| 单词 | placental |
| 例句 | There had been bleeding; if she could have afforded an examination, a doctor would have found signs of placental abruption. Just Mercy 2014-10-21T00:00:00Z The countless capillaries that join mother and child in the womb, enabling new life to grow, seem to him like “a million tiny hands”, their fingers “locked across the placental divide”. Life in the round 2015-06-11T04:00:00Z In Tuesday’s post, Teigen wrote that her doctors diagnosed her with a partial placental abruption. Chrissy Teigen delivers heartfelt essay on miscarriage 2020-10-27T04:00:00Z Plastic surgery and dermatology clinics in South Korea are looking to cash in on President Park Geun-hye's enthusiasm for "aesthetic injection" treatments, including one with human placental extract, despite her deep unpopularity. South Korea clinics bank on unlikely celebrity: President Park 2016-12-14T05:00:00Z She had suffered a severe placental abruption, a rare complication in which the placenta detaches from the uterus. ‘All my friends had some nightmare experience trying to get pregnant. My story took the cake’ 2017-03-11T05:00:00Z I read about studies showing the presence of the virus in amniotic fluid, in placental tissue, in the brains of newborns. Notes on being pregnant in a pandemic 2020-09-21T04:00:00Z This does not address toddlers and children or the developing fetus and placental transfer. Listen up, doctors: Here’s how to talk to your patients 2012-05-23T11:45:00Z Retained placenta; umbilical cord prolapse; foetal arrhythmia; toxoplasmosis; preeclampsia; placental abruption; gestational diabetes; cytomegalovirus: I read about all of them, and learned the warning signs. ‘Reality shrivels. This is your life now’: 88 days trapped in bed to save a pregnancy 2017-10-24T04:00:00Z Species with longer jaws have room for more teeth -- and, like humans, their total tooth complement is closer to what the ancestor of placental mammals had. Fruit, nectar, bugs and blood: How bat teeth and jaws evolved for a diverse dinnertime 2023-10-26T04:00:00Z On that occasion, the family had received good, prompt care after Phoebe had suffered a placental abruption - a serious condition in which the placenta starts to come away from the inside of the womb wall. Jasper Brooks inquest: Baby died due to 'neglect' at hospital 2023-10-23T04:00:00Z She and her team will measure placental blood flow at regular check-ins. How much heat is dangerous during pregnancy? 2023-09-27T04:00:00Z Yale researchers have shown that placental examination resulted in the accurate pathologic determination of more than 90% of previously unexplained pregnancy losses, a discovery that they say may inform pregnancy care going forward. Placenta holds answers to many unexplained pregnancy losses 2023-09-19T04:00:00Z This led to the identification of tissue-specific gene expression signatures that resemble those from living extant marsupial and placental mammals. RNA for the first time recovered from an extinct species 2023-09-19T04:00:00Z BBC News understands that one common theme that the CQC is investigating is whether staff could have spotted that the three mothers all had placental abruptions and delivered the babies sooner. Hospital inspectors probe Nottingham NHS trust over three baby deaths 2023-09-10T04:00:00Z It also reduced expression of placental genes involved in immune function, which the endocannabinoid system helps regulate. As cannabis laws relax, neuroscientist warns of its dangers for developing brain 2023-08-31T04:00:00Z “We know that women who receive infertility treatment have certain vascular complications, typically an increased risk of pre-eclampsia and placental abruption,” he said. Women May Face Higher Risk of Stroke Following Infertility Treatment 2023-08-30T04:00:00Z Hairdresser Mrs Walden had had placental complications and severe blood loss after childbirth. Ipswich Hospital: 'Our daughter's childbirth death was preventable' 2023-08-22T04:00:00Z In contrast, placental mammals, which give birth to live offspring, have young that start out relatively large. How Sauropod Dinosaurs Became the Biggest Land Animals Again and Again 2023-08-15T04:00:00Z She also found that a placental abruption was likely to have occurred hours earlier but that CTG scans had been "misinterpreted" by staff, which led to "reassurance" about the baby. Hospital inspectors probe Nottingham NHS trust over three baby deaths 2023-09-10T04:00:00Z The couple wanted placental pathology but “no fetal autopsy unless there are visual abnormalities,” a doctor’s note states. Judge allows suit alleging that hospital ignored parents and performed fetal autopsy without consent 2023-07-28T04:00:00Z Led by Addenbrooke's Hospital in Cambridge, it aims to explain why some women develop pre-eclampsia and other placental complications. Thousands of first time mums in pre-eclampsia study 2023-07-19T04:00:00Z At the heart of the dispute are the primitive early forerunners to modern placental and marsupial mammals. Fossils Where They Don’t Belong? Maybe We Just Didn’t Look Hard Enough. 2023-07-16T04:00:00Z Hormones such as estrogen, cortisol and human placental lactogen often trigger it as they increase blood sugar to more than double the normal level to cope with the increased energy demands of an unborn fetus. CDC: Gestational diabetes rate surges 27% among pregnant women 2023-05-31T04:00:00Z Marsupials differ from eutherians in that there is a less complex placental connection: The young are born at an extremely early age and latch onto the nipple within the pouch. Fundamentals of Biology 2015-01-01T00:00:00Z Eutherian mammals are sometimes called placental mammals, because all species have a complex placenta that connects a fetus to the mother, allowing for gas, fluid, waste, and nutrient exchange. Concepts of Biology 2013-04-25T00:00:00Z Those who experience placental complications are twice as likely to develop heart disease and diabetes later in life. Thousands of first time mums in pre-eclampsia study 2023-07-19T04:00:00Z Dr. Flannery compared them to the Ford Model T “of modern or placental mammals.” Fossils Where They Don’t Belong? Maybe We Just Didn’t Look Hard Enough. 2023-07-16T04:00:00Z The complication, known as placental abruption, can lead to stillbirth. Commentary: In 'Yellowjackets,' as in America, the dangers of childbirth are all too real 2023-05-05T04:00:00Z There are 18 to 20 orders of placental mammals. Fundamentals of Biology 2015-01-01T00:00:00Z Like reptiles, monotremes have one posterior opening for urinary, fecal, and reproductive products, rather than three separate openings like placental mammals do. Concepts of Biology 2013-04-25T00:00:00Z Dr Bernadette Jenner, who is leading the study, said there was a "significant lack of understanding" about placental conditions, despite how common they are and the fact they can be life-threatening. Thousands of first time mums in pre-eclampsia study 2023-07-19T04:00:00Z The pangrams from yesterday’s Spelling Bee were pentacle, placenta and placental. The Hard Question of Affirmative Action and Slavery 2023-05-01T04:00:00Z The findings, detailed in 11 studies published in the journal Science, involved placentals, by far the world's most common mammalian assemblage, known for giving birth to well-developed babies, and not egg-laying monotremes or pouched marsupials. Ambitious genome project shows how humans fit with other mammals 2023-04-27T04:00:00Z Eutherian mammals are sometimes called placental mammals because all species possess a complex placenta that connects a fetus to the mother, allowing for gas, fluid, and nutrient exchange. Fundamentals of Biology 2015-01-01T00:00:00Z Before birth, marsupials have a less complex placental connection, and the young are born much less developed than in placental mammals. Concepts of Biology 2013-04-25T00:00:00Z A search of the apartment turned up what appeared to be a piece of umbilical cord or placental remains in a dresser drawer. Police say Iowa couple drowned newborn in apartment bathtub 2022-12-08T05:00:00Z It takes on the role of lungs, liver and kidneys for the fetus, but Covid can ravage it, said Dr. Anne V. Herdman Royal, a pathologist at Tulsa Medical Laboratory who studies placental tissue. A Plea From Experts to Pregnant Women: Get Vaccinated Against Covid 2022-12-08T05:00:00Z The research showed that placentals, dating to about 100 million years ago, began diversifying before the asteroid strike 66 million years ago that doomed the dinosaurs and enabled mammals to go from subordinate to dominant. Ambitious genome project shows how humans fit with other mammals 2023-04-27T04:00:00Z Eutherian mammals are sometimes called placental mammals, because all species possess a complex placenta that connects a fetus to the mother, allowing for gas, fluid, and nutrient exchange. Fundamentals of Biology 2015-01-01T00:00:00Z Diagnosed with partial placental abruption - where the placenta comes away from the inner wall of the womb - she was continually losing blood despite "bags and bags of transfusions". John Legend interview: The pain of losing a child will never go away 2022-09-23T04:00:00Z Several weeks after losing her baby, Teigen wrote a moving blog explaining that she had been induced to deliver Jack at 20 weeks after being diagnosed with partial placental abruption. Chrissy Teigen says she has come to realise she had an abortion, not a miscarriage 2022-09-16T04:00:00Z In the same year, Teigen wrote in an essay explaining that doctors diagnosed her with a partial placental abruption. Chrissy Teigen reveals baby bump after 2-year pregnancy loss 2022-08-03T04:00:00Z By the beginning of the Cenozoic, three major mammal groups had evolved—monotremes, marsupials, and placentals. Miller & Levine Biology 2018-01-01T00:00:00Z RhoGAM antibodies destroy any fetal Rh+ erythrocytes that may cross the placental barrier. Anatomy and Physiology 2013-06-19T00:00:00Z She writes, “The blue whale, the bumblebee bat, and you and I are placental mammals,” all teetering on the age of annihilation. Sun Yung Shin’s poems explore the world of transnational adoption in ‘The Wet Hex’ 2022-06-23T04:00:00Z Now researchers have identified genes that help to regulate placental embedding and may prove instructive in developing anticancer drugs, according to a new study in the Proceedings of the National Academy of Sciences USA. Insights from Pregnancy Could Help Fight Cancer 2022-06-09T04:00:00Z Scientists have debated these questions since the 1870s, when the first fossils of Paleocene placental mammals emerged in New Mexico. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z The study focused on placentals, by far the most common mammals. After killer asteroid, mammals got bigger before they got smarter 2022-03-31T04:00:00Z However, estrogen, progesterone, and other placental hormones inhibit prolactin- mediated milk synthesis during pregnancy. Anatomy and Physiology 2013-06-19T00:00:00Z New computer models simulate blood flow, placental biology, and fetal circulation to trace the virtual passage of chemical compounds during pregnancy. Which medicines can you take when pregnant? New efforts aim to crack a scientific black box 2022-03-16T04:00:00Z Researchers in 12 countries, including the United States, analyzed placental and autopsy tissue from 64 stillbirths and four newborns who died shortly after birth. Coronavirus can destroy the placenta and lead to stillbirths 2022-02-10T05:00:00Z Finally, over the past two decades, new discoveries and research techniques have unmasked these placental pioneers. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z The most common type is arterial ischemic stroke, where an artery in the brain becomes blocked, usually by a placental blood clot. A newborn lost large parts of his brain. Today, he’s an athletic college grad. 2022-01-21T05:00:00Z Thyrotropin, in conjunction with placental hormones, increases the production of thyroid hormone, which raises the maternal metabolic rate. Anatomy and Physiology 2013-06-19T00:00:00Z They found a signature based on seven genes—some known to be involved in placental development—that predicted preeclampsia in 75% of women who later developed it. Simple test could predict dangerous blood pressure in pregnant women 2022-01-05T05:00:00Z Patients who receive a positive result are supposed to pursue follow-up testing, which often requires a drawing of amniotic fluid or a sample of placental tissue. When They Warn of Rare Disorders, These Prenatal Tests Are Usually Wrong 2022-01-01T05:00:00Z The molecular clock—a technique that uses DNA differences among modern species and back calculates to estimate when they diverged—predicts that some placental lineages, including primates, lived alongside the dinosaurs. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z According to Monk's study, it was the first to link pregnant individuals' stress with changes in the expression of placental genes. Stress in utero: COVID chaos and babies’ future health 2021-12-05T05:00:00Z Describe the role of placental secretion of relaxin in preparation for childbirth. Anatomy and Physiology 2013-06-19T00:00:00Z As part of the study, the researchers collected placentas from some of the mothers after they gave birth and analyzed the activity of their placental genes. Cannabis use in pregnancy may lead to a more anxious, aggressive child 2021-11-29T05:00:00Z And its analysis of placental tissue points to changes in the activity of immunity-related genes. Cannabis Use in Pregnancy Is Linked to Child Anxiety, Hyperactivity 2021-11-15T05:00:00Z Although paleontologists are desperate to recover fossils of such early placentals, they have yet to be found. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z For those who are calcium-deficient while pregnant, it can leach from the bones and cross the placental barrier, exposing the fetus to lead. "Drinking through a lead straw" — $15B approved to fix dangerous water pipes 2021-11-10T05:00:00Z When NHS England rolled out wider placental growth factor testing in 2019, it said evidence suggested it sped up diagnosis, which could save lives. Pregnancy: Some women in Wales to get pre-eclampsia test 2021-10-15T04:00:00Z Other researchers had found that DNA from placental tissue would glom onto those decoys and allow the probes to home in on their intended chromosome locations. This genetic sleuth has uncovered a new category of disease marked by sporadic fevers and inflammation 2021-09-22T04:00:00Z In the placental tissues, gene activity was altered with cannabis exposure during pregnancy: genes related to the inflammatory response showed decreased function. Cannabis Use in Pregnancy Is Linked to Child Anxiety, Hyperactivity 2021-11-15T05:00:00Z As ecosystems recovered in the earliest Paleocene, many of the mammals that started to multiply were eutherians, the placental antecedents that were once bit players in the Cretaceous. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z It is also associated with risks like placental dysfunction. Women Surgeons at Greater Risk of Pregnancy Loss, Study Finds 2021-07-28T04:00:00Z "It's dangerous because you can end up in emergency situations where you can have a risk of eclampsia or placental eruption." Pregnancy: Some women in Wales to get pre-eclampsia test 2021-10-15T04:00:00Z Women with support from their own kin have lower rates of postpartum depression, possibly mediated by a more gradual late-pregnancy increase in a chemical called placental corticotropin-releasing hormone, a U.C.L.A. team found. Opinion | Whale Mothers Need Their Moms. So Do I. 2021-05-01T04:00:00Z Anxiety and hyperactivity levels were higher in children from cannabis-exposed pregnancies and were associated with the placental gene patterns. Cannabis Use in Pregnancy Is Linked to Child Anxiety, Hyperactivity 2021-11-15T05:00:00Z These plucky survivors forged a new world—an Age of Mammals, in which placentals, more than all the others, became ascendant. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z According to the research conducted in February, antibodies were detected in all 20 women administered both doses of the Pfizer/BioNTech vaccine during their third trimester of pregnancy and in their newborns, through placental transfer. COVID-19 vaccination of pregnant women could protect babies, Israeli researchers say 2021-03-16T04:00:00Z DNA from the envelope she mailed back was matched to DNA from the placental blood clot, say the charges. Seattle woman accused of abandoning newborn in Lake City trash can charged with second-degree murder 2021-03-15T04:00:00Z She and other genealogists were able to develop the mother’s DNA profile with a placental blood clot found at the scene. Seattle woman arrested 23 years after infant found dead 2021-03-12T05:00:00Z But unlike the other creatures, they are Old World placental mammals, an evolutionary group not previously represented. Meet the Newest Member of the Fluorescent Mammal Club 2021-02-18T05:00:00Z Some of the best fossils of the first true placentals to form diverse Paleocene communities come from New Mexico, particularly Kimbeto. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z “This pollution cause placental inflammation and affects the baby,” said Pacheco. The life-altering effects heat is having on American children 2021-02-16T05:00:00Z By analyzing these cases, the team identified two unusual placental abnormalities that seemed to occur in all the patients. Why COVID Vaccines Are Likely Safe for Pregnant People 2021-02-02T05:00:00Z The researchers looked at levels of the coronavirus in respiratory, blood and placental tissue samples and the formation of maternal antibodies and how well those antibodies traveled through the placenta to the fetus. Pregnant women with COVID-19 in the 3rd trimester unlikely to pass the infection to newborns: Study 2020-12-23T05:00:00Z Stella Kirkpatrick was born about a month early due to placental abruption, a condition where the placenta detaches from the womb before delivery. Robotics team put their brains to use to make a girl’s day 2020-10-04T04:00:00Z It was one of dozens of new placentals in its environment, already turning dinosaurs into ancient history. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z The method promises a window on how defects in placental development may lead to infertility, miscarriage, and preeclampsia, a dangerous complication of pregnancy. Stem cells offer new glimpse at how the placenta emerges—and how the fetus-sustaining organ can fail 2020-09-30T04:00:00Z The painting is a pool of burnt umber, swirling around the placental red of the robes worn by the Virgin and one of the shepherds. In Dark Times, I Sought Out the Turmoil of Caravaggio’s Paintings 2020-09-23T04:00:00Z Another study published this month in eLife suggests the virus is unlikely to easily invade placental cells. Why pregnant women face special risks from COVID-19 2020-08-04T04:00:00Z The same process may govern placental development in humans—and disrupt embryonic growth and development when it goes awry—says Indira Mysorekar, a reproductive biologist at Washington University School of Medicine in St. Louis. Controversial DNA modification could play key role in placenta development 2020-07-23T04:00:00Z We have known about these Paleocene placentals for nearly 150 years. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z Dr. Yoel Sadovsky, executive director of Magee-Womens Research Institute at the University of Pittsburgh, who was not involved in the study, said he thought the claim of placental transmission was “fairly convincing.” Baby was infected with coronavirus in womb, study reports 2020-07-14T04:00:00Z The consequences are sometimes irreversible when there are problems with hypertension, placental abruptions, preeclampsia and umbilical cord entanglement. Rural health crisis: Moffat County loses obstetrics care 2020-03-12T04:00:00Z By contrast, they found that receptors for Zika and CMV are abundant on placental cells. Why pregnant women face special risks from COVID-19 2020-08-04T04:00:00Z Things got worse about 4000 years ago when people introduced the dingo, a placental mammal from Asia that was a more efficient hunter than the Tasmanian tiger or devil and quickly outcompeted them. Giant reptiles once ruled Australia. Their loss sparked an ecological disaster 2019-10-11T04:00:00Z These Paleocene oddballs garnered a troublesome reputation, and scholars began to dismiss them as “archaic” placentals. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z With other viruses, including Zika and rubella, placental infection and transmission is much more common, he said. Baby was infected with coronavirus in womb, study reports 2020-07-14T04:00:00Z The detection of the particles on the foetal side of the placental barrier means it was very likely the foetuses were exposed, Nawrot said. Air pollution particles found on foetal side of placentas – study 2019-09-17T04:00:00Z One hypothesis, she says, is that placental microbes prevent the colonization of the fetus by dangerous bacteria. Bacteria-free placentas suggest babies pick up microbiome at birth 2019-07-31T04:00:00Z They also used positive controls, produced by spiking placental samples with a known amount of the bacterium Salmonella bongori, to calibrate the abundance of other microbes that might be in the sample. No bacteria found in healthy placentas 2019-07-30T04:00:00Z Untangling the genealogical relationships of these archaic placentals is challenging. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z De Luca, who is also the president-elect of the European Society for Pediatric and Neonatal Intensive Care, said his team was analyzing other suspected cases of placental transmission of the coronavirus. Baby was infected with coronavirus in womb, study reports 2020-07-14T04:00:00Z Suthar recently submitted a new grant application to study first- and second-trimester placental tissue, and is worried about its fate under the still uncertain ethics provision. Scientists feel chill of crackdown on fetal tissue research 2019-06-08T04:00:00Z But when the researchers looked at therian mammals alone – that is, the group that contains placental and marsupial mammals – they found that this subgroup quickly responded to the ecological shakeup by evolving more jaw functions. Fossil Jaws a Sign of When Mammals Bounced Back 2019-05-25T04:00:00Z “But there’s nothing inherently magical about placental tissue or the amniotic sac.” ‘Miraculous’ stem cell therapy has sickened people in five states 2019-02-26T05:00:00Z Some of the archaic species, such as taeniodonts, might have stemmed from Cretaceous eutherian ancestors and thus would be among the most primitive placentals on the trunk of the family tree. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z This results in partial genome replication and the accumulation of DNA damage, which lead to genome instability in placental and embryonic cells in mice. Unstable genomes promote inflammation 2019-02-19T05:00:00Z This mechanism for maintaining symmetry in development would, however, work only with placental mammals. Readers Respond to the October 2018 Issue 2019-02-01T05:00:00Z “And placental health is critical to the health of a pregnancy.” The Placenta, an Afterthought No Longer 2018-12-03T05:00:00Z The team gradually developed ways to isolate and characterize placental cells, and eventually found the right combination of harvested cells and an organoid culture system to enable the generation of mini placenta models. Scientists create "mini placenta" organoids in a lab dish 2018-11-28T05:00:00Z The archaic placentals, therefore, seem to be a diverse menagerie, some of which formed their own idiosyncratic subgroups and others the ancestral stock from which today’s placentals arose. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z Anti-inflammatory treatment did not reduce DNA damage in placental cells. Unstable genomes promote inflammation 2019-02-19T05:00:00Z They studied 70,000 white blood cells and cells from the placental and decidual tissues of women who terminated their pregnancies between 6 weeks and 14 weeks of gestation. Immune system ‘negotiations’ stop mom’s body from attacking her fetus 2018-11-14T05:00:00Z Dr. Abuhamad’s team is using these advances in ultrasound to chart placental health in about 500 pregnant women, including 300 at high risk of complications. The Placenta, an Afterthought No Longer 2018-12-03T05:00:00Z The authors found that VCT cells express receptors that promote differentiation and are stimulated by growth factors produced by various placental cells. Cell atlas reveals the landscape of early pregnancy 2018-11-13T05:00:00Z Fossils collected by our team and studied using new technologies reveal how these placentals developed novel features and behaviors, helping them adapt to the early Paleocene mayhem and take advantage of open niches. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z The interface between cancer cells and the tumour microenvironment recapitulates some aspects of the placental–embryo interface, including high levels of cell proliferation and invasion and suppression of the immune response. Unstable genomes promote inflammation 2019-02-19T05:00:00Z It is where blood vessels travelling from your baby to your placenta, unprotected by placental tissue or the umbilical cord, pass near to the cervix. Placenta complications 'need earlier diagnosis' 2018-09-27T04:00:00Z Instead, when placental screening identified a problem, women might be encouraged to see their doctors frequently through the first trimester. The Placenta, an Afterthought No Longer 2018-12-03T05:00:00Z The company, which makes skin grafts and injectable products from human placental tissues, is in the process of restating its financial results back to 2012. Former MiMedx Executives to Lose Compensation 2018-09-21T04:00:00Z Many placental trademarks evolved during this time—assets that helped to mold generalist extinction survivors into new and diverse specialists. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z A fifth region, the lumbar, appeared after early, egg-laying mammals arose and is found today in placental and marsupial mammals. The evolution of the spine fueled the rise of mammals—and human back problems 2018-09-20T04:00:00Z Along with the baby, a pregnant woman’s body is developing cord blood containing stem cells, placental tissue, and amniotic membranes. Should US mothers be paid for life-saving cord blood or placentas? 2018-08-16T04:00:00Z Some scientists are betting on magnetic resonance imaging scans, or M.R.I.s, as the most sensitive detectors of placental problems. The Placenta, an Afterthought No Longer 2018-12-03T05:00:00Z So far, no one has created a placental mammal entirely outside a uterus. Why I testified in the Argentina abortion debate 2018-07-16T04:00:00Z These traits underpinned the success of placentals over the next 66 million years and are part of the foundation of our own human biology. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z In the latest experiments, after the embryo attached to the dish, an outer cell layer began differentiating into early placental and other cell types that support embryonic growth. The labs growing human embryos for longer than ever before 2018-07-03T04:00:00Z This abuse was part of a larger prejudice against marsupials that is sometimes called placental chauvinism. The Obsessive Search for the Tasmanian Tiger 2018-06-25T04:00:00Z Stem cell treatments using placental or umbilical cord blood are the “only stem cell therapies approved so far by the FDA,” Laurie and William report. Analysis | The Health 202: Leading Obamacare insurer says things are 'materially worse' under Trump administration 2018-05-01T04:00:00Z We are placental mammals: embryos can only develop to maturity within a woman’s womb. Why I testified in the Argentina abortion debate 2018-07-16T04:00:00Z Chief among these hallmarks of placental mammals is the capacity to birth well-developed young, which gestate for a prolonged period inside the mother before being born in an advanced state. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z When she was seven months pregnant, Coogle fell while running to stop a fight between inmates and later “lost her baby due to a placental rupture.” Lawsuit alleges discrimination by pregnant prison officer 2018-04-17T04:00:00Z And despite the similarities, the Tasmanian tiger last shared a common ancestor with the placental pack some 160 million years ago during the Jurassic period. A 3-D Look Inside the Tasmanian Tiger’s Pouch, Long After Extinction 2018-02-23T05:00:00Z The company says its products, made from donated placental tissue, aren’t among those that require a disclosure of doctor payments. MiMedx, Fast-Growing Developer of Tissue Graft Products, Didn’t Report Payments to Doctors 2018-02-22T05:00:00Z Furthermore, a developing embryo depends on placental exchange. Why I testified in the Argentina abortion debate 2018-07-16T04:00:00Z Prolonged gestation allows some placentals to get a head start in life: babies can often start moving, socializing and even procuring their own food shortly after birth. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z Her project aims to identify more placental RDGs and determine whether they are also activated in cancer cells, and if so, whether they promote cancer cell invasion. Can Pregnancy Help Scientists Better Understand Cancer? 2018-02-05T05:00:00Z The researchers also found nearly triple the probability for placenta accreta, in which the placenta grows too deeply into the uterine wall, and an increased chance of other placental problems. Cesarean Delivery Can Pose Long-Term Risks to Mother and Child 2018-01-26T05:00:00Z One paediatrician likens the controversy over the placental microbiome to a scientific “knife fight”. Could baby’s first bacteria take root before birth? 2018-01-16T05:00:00Z But after about 2 days, the mother’s immune system “rejects” the embryos, causing the birth of a litter still at a very immature developmental stage compared to placental mammals. The key to a successful pregnancy: a tamed immune reaction 2018-01-10T05:00:00Z This observation confirms the evidence from pelvic anatomy that these Paleocene species really were placentals. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z Now, a study of gene expression in early pregnancy, when the embryo implants in the uterus, suggests that placental mammals evolved the ability to turn an inflammatory attack on the embryo into an advantage. Armadillo, Hedgehog and Rabbit Genes Reveal How Pregnancy Evolved 2018-01-10T05:00:00Z There is still much to be learned about Zika, which seems to be the only virus of its type to cross the placental barrier and stunt the brain development of the fetus. Zika cases retreat widely, but experts remain worried 2018-01-08T05:00:00Z So he planned a study to examine differences between the placental microbiomes of preterm infants and those of babies born at term. Could baby’s first bacteria take root before birth? 2018-01-16T05:00:00Z But later in evolution, placental mammals dialed back that inflammation to allow extended gestation. The key to a successful pregnancy: a tamed immune reaction 2018-01-10T05:00:00Z As the Paleocene placentals grew larger, they diversified in other ways. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z But in placental mammals, the embryo does not simply cling to the uterus. Armadillo, Hedgehog and Rabbit Genes Reveal How Pregnancy Evolved 2018-01-10T05:00:00Z The population at highest risk for preterm birth because of hypertensive disorders or placental insufficiency? Perspective | There is medication to stop preterm births, but many women don’t get treatment 2017-10-27T04:00:00Z Some people are stuck on the idea that the placental microbiome is “fake news”, she says. Could baby’s first bacteria take root before birth? 2018-01-16T05:00:00Z But in many other placental mammals, they disappear right after implantation. The key to a successful pregnancy: a tamed immune reaction 2018-01-10T05:00:00Z What she found was unexpected: the archaic placental skeletons were highly diverse, and their ankles were capable of many types of locomotion. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z His preliminary studies found that cells lining the uterus of placental mammals suppress the production of interleukin-17. Armadillo, Hedgehog and Rabbit Genes Reveal How Pregnancy Evolved 2018-01-10T05:00:00Z For an article in this month’s issue on the placenta, for example, we were attempting to show newly emerging details on placental development for which very little visual reference material already existed. The Evolution of a Scientific American Graphic: Pregnancy in Progress 2017-10-13T04:00:00Z Placentas make viral proteins, and scientists have found that some types, known as syncytins, fuse together placental cells, a crucial step in fetal development. Ancient Viruses Are Buried in Your DNA 2017-10-04T04:00:00Z Mostly isolated for much of the Cenozoic, South America was home to a remarkable, endemic assemblage of big, herbivorous placental mammals, marsupial-like predators and omnivores, predatory flightless birds, diverse crocodyliforms and more. Darin Croft's Horned Armadillos and Rafting Monkeys 2017-10-01T04:00:00Z For all their specializations, however, the Paleocene archaic placentals were not especially intelligent. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z Mouse embryos lacking the protein form mostly placental cells; the cells destined to form the fetus don’t appear. Scientists use gene-editing technology to knock out genes in human embryos for first time 2017-09-20T04:00:00Z And, as yet, no placental carnivores have been found in the same spot. Keep Sharp, Metatherians 2017-09-16T04:00:00Z These placental structures, just two cell layers thick, provide oxygen, nutrients and molecular signals that drive development to the fetus while protecting it from the mother’s immune system. Wallaby milk acts as a placenta for babies 2017-09-11T04:00:00Z Tsidiiyazhi lived at a time when the planet was undergoing great change, with placental mammals and flowering plants also diversifying rapidly. Fossil sheds light on bird evolution after asteroid strike - BBC News 2017-07-10T04:00:00Z She scanned several skulls of archaic placentals from New Mexico, along with stunning new fossils recently discovered near Denver by Tyler Lyson and Ian Miller and their team. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z But in the human embryo knockouts, placental cells and yolk sac cells also failed to form. Scientists use gene-editing technology to knock out genes in human embryos for first time 2017-09-20T04:00:00Z Anatoliadelphys might have evolved in isolation, then, able to carve out a living free from the oppressive competition of placental predators. Keep Sharp, Metatherians 2017-09-16T04:00:00Z Taxonomists usually separate marsupials — including kangaroos, wallabies and wombats — from placental mammals, also known as eutherians, such as mice and people. Wallaby milk acts as a placenta for babies 2017-09-11T04:00:00Z Heather Wilson suffered a placental abruption at 36 weeks pregnant that suffocated Kennedy in the womb. After stillborn baby, couple starts burial gowns nonprofit 2017-07-09T04:00:00Z The relative brain sizes of the archaic placentals were laughably small compared with not only those of today’s mammals but even those of the Cretaceous species living with the dinosaurs. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z There are three kinds of mammals: egg-laying monotremes such as the platypus, marsupials like kangaroos and opossums, and the majority—placental, or eutherian, mammals—including humans and about 4400 other mammal species. Digital reconstruction of ancient chromosomes reveals surprises about mammalian evolution 2017-06-19T04:00:00Z It also tipped the natural odds in favor of our placental ancestors. Keep Sharp, Metatherians 2017-09-16T04:00:00Z One case, at the University of California, Davis Medical Center, involved a pregnant woman at high risk of bleeding to death from a placental abnormality. Inspired by War Zones, Balloon Device May Save Civilians From Fatal Blood Loss 2017-06-19T04:00:00Z In many cases, no fetus develops, only placental tissue. Opinion | Five myths about pregnancy 2017-05-12T04:00:00Z The first placentals, it seems, got so big so fast that their brains couldn’t initially keep pace. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z It highlights differences in mouse placental development that can result from manipulation of the mother's immune system. Colourful, creative and close up: Wellcome Images 2017 - BBC News 2017-03-15T04:00:00Z It was an agile little carnivore that was able to make a living for itself when there were plenty of placental mammals doing the same. Keep Sharp, Metatherians 2017-09-16T04:00:00Z Before labor, placental problems were the most common cause of stillbirth, accounting for roughly one-quarter of cases. After a stillbirth, tests may help pinpoint the cause and offer emotional healing 2017-03-09T05:00:00Z Before labor, placental problems were the most common cause of stillbirth, accounting for roughly a quarter of cases. After a Stillbirth, Tests Can Help Pinpoint the Cause 2017-03-09T05:00:00Z It also, perhaps, defies expectations: Shouldn’t the mammals that founded the placental dynasty have used their wits to navigate the obstacle course of postasteroid survival? How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z Researchers are therefore focusing on studies of placental tissue for now. Secrets of life in a spoonful of blood 2017-02-06T05:00:00Z Their brains, like those of all marsupials, are very different from the brains of placental mammals. Tasmanian Tigers’ Brains Yield Clues Long After Extinction 2017-01-20T05:00:00Z Cut access to lingering placental blood in the cord too soon, and the baby misses extra oxygen to supplement those early breaths. Don’t cut the cord too fast; a pause benefits most newborns 2016-12-21T05:00:00Z The pregnancy progressed well until Keiko became poorly with absent placental flow and stopped growing. Premature quadruplets home for Christmas in Birmingham - BBC News 2016-12-20T05:00:00Z Eventually, as ecosystems stabilized and competition among the many new placentals increased, their brains expanded. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z One surprise from studies of placental tissue is just how dynamic placental methylation is, says Wendy Robinson, a developmental biologist at the University of British Columbia in Vancouver, Canada. Secrets of life in a spoonful of blood 2017-02-06T05:00:00Z Scientific evidence of the benefits of placental extract is thin. Placenta shots and fake names: South Korean president's treatments raise eyebrows 2016-12-16T05:00:00Z Their mothers are also more likely to develop pregnancy-related complications like miscarriage, high blood pressure, gestational diabetes, pre-eclampsia, premature labor, placental abnormalities, cesarean delivery and prolonged hospitalization. Experts Advise Minimizing Multiple Births Through I.V.F. 2016-10-10T04:00:00Z Dr. Coyne is co-author of a recent study showing that the main placental barrier cells, resist Zika by releasing an antiviral molecule. Confronting a Lingering Question About Zika: How It Enters the Womb 2016-07-18T04:00:00Z But the future mostly belonged to the placentals. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z There is a placental route, established in the first trimester of pregnancy, or a route across the amniotic sac that only becomes available in the second trimester, the research team reported. New Clues to Zika's Threat to Fetus, and How to Stop It 2016-07-19T04:00:00Z As for the baby, exercise helps with placental growth and function, and stress tolerance. Working out has huge benefits for pregnant women and their babies 2016-07-11T04:00:00Z But unlike more densely colonized body sites such as the gut and mouth, placental samples are overwhelmingly negative in culture-based assays39. A microbial perspective of human developmental biology : Nature : Nature Publishing Group 2016-07-05T04:00:00Z However, some companies do advertise placental and amniotic stem cells. A dish called hope 2016-07-07T04:00:00Z From here today’s rich tapestry of placentals—including us—can trace our heritage. How Mammals Conquered the World after the Asteroid Apocalypse 2022-05-17T04:00:00Z But about one-fifth of the businesses claimed to use stem cells from umbilical cord blood or amniotic or placental tissue. Hundreds of U.S. Clinics Sell Unapproved Stem Cell 'Therapies' 2016-06-30T04:00:00Z As for the baby, the physical activity helps with placental growth and function, and stress tolerance. Working out has huge benefits for pregnant women and their babies 2016-07-11T04:00:00Z Similar evidence was also found in placental tissue from two fetuses whose mothers suffered a miscarriage at 11 and 13 weeks of pregnancy. Zika Brain Damage May Occur in Babies With Normal-Sized Heads 2016-06-29T04:00:00Z The challenge is that Zika is unique among its related viruses because the others don’t invade the nervous system or developing fetuses because of blood-brain and placental barriers. Scientists announce important Zika milestone: First vaccine ready for human trials 2016-06-20T04:00:00Z As for a link to fetal malformations, she said the virus has been detected in amniotic fluid, and evidence shows it can cross the placental barrier and infect the fetus. WHO warns pregnant women to avoid going to Zika-affected areas 2016-03-08T05:00:00Z Earlier attempts testing placental cells in lab dishes haven’t mimicked that boundary well enough to be of much use, Coyne explained. Model aims to tell researchers how infection passes placenta 2016-03-04T05:00:00Z They included calcification of the brain, placental insufficiency with low to no amniotic fluid, fetal growth restriction and central nervous system damage, including potential blindness. Evidence mounts linking Zika virus to birth defects 2016-03-04T05:00:00Z Earlier attempts testing placental cells in lab dishes haven't mimicked that boundary well enough to be of much use, Coyne explained. Researchers have created a cellular model of the human placenta to help uncover how infections, from toxoplasmosis to the Zika virus, may pass from a mother to her unborn child 2016-03-04T05:00:00Z "A planned cesarean section increases the baby's risk of needing emergency care and the mother's risk of developing blood clot, bleeding as well as uterine rupture and placental adhesion disorders in subsequent pregnancies," Tahtinen explained. Urinary Incontinence Risk Rises Slightly After Vaginal Birth, Study Finds 2016-02-26T05:00:00Z “To better understand the pathogenesis of Zika virus infection and associated congenital anomalies and fetal death, it is necessary to evaluate autopsy and placental tissues from additional cases.” Research claims 'proof' of link between Zika virus and microcephaly in babies 2016-02-11T05:00:00Z Similarly, fetal and placental blood circulation levels, as well as in-utero blood velocity, did not appear to be affected by shifting flavanol levels. Daily Bit of Chocolate in Pregnancy May Help Mom, Baby 2016-02-04T05:00:00Z It also raises a woman's risk of seizures and coma, and placental abruption -- where the placenta separates from the uterus, sometimes causing life-threatening bleeding. Blood Test May Help Rule Out Pregnancy Complication: Study 2016-01-06T05:00:00Z It also raises a woman's risk of seizures, coma and placental abruption -- where the placenta separates from the uterus, sometimes causing life-threatening bleeding. High Blood Pressure During Pregnancy Tied to Newborn Heart Defects 2015-10-20T04:00:00Z One study is researching how to prevent ectopic pregnancy and the other is researching health risks related to poor placental blood flow. Planned Parenthood responds to Oregon Republicans 2015-10-08T04:00:00Z Methylmercury can cross the placental barrier, so seal pups born to contaminated mothers become contaminated in the womb. Molting seals in California are shedding toxic fur 2015-09-12T04:00:00Z In the ensuing Paleogene, it was the placental mammals that took advantage of the metatherian demise and blossomed into the many familiar groups we know today, including our primate forebears. Readers Respond to Rise of the Tyrannosaurs 2015-08-28T04:00:00Z The leading reasons for that higher risk appear to be high blood pressure and placental disorders, the researchers suggested. Obesity May Be Linked to Greater Risk of Stillbirth 2015-08-28T04:00:00Z Of the placental mammals, Moore said, the panda has the tiniest babies in comparison to the size of the mother. Why giant panda cubs are so incredibly tiny 2015-08-25T04:00:00Z It is a screening test that analyzes the mother's blood, which contains fragments of both placental and maternal DNA. Prenatal Gene Tests Can Sometimes Spot Cancer in Mom-to-Be 2015-07-13T04:00:00Z By better understanding how the placenta manages all this traffic, researchers hope to help provide insight into better placental health and improve pregnancies. Researchers Create Placenta-On-A-Chip To Study Biology Of Human Placenta 2015-06-26T04:00:00Z The researchers said they did not expect to find hand preference in kangaroos or other marsupials - the pouched mammals - because of brain differences from the more common placental mammals, including primates, the researchers said. That's right, kangaroos are left-handed 2015-06-18T04:00:00Z These complications included high blood pressure, placental diseases or disorders, fetal abnormalities, and umbilical cord abnormalities, the study said. Obesity May Be Linked to Greater Risk of Stillbirth 2015-08-28T04:00:00Z Moreover, the kind of fatty acids that the cub needs can't be passed from the mother to the cub through the placental barrier, Moore said. Why giant panda cubs are so incredibly tiny 2015-08-25T04:00:00Z The studies include fetal and newborn development, placental biology and reproductive diseases, including preterm birth and preeclampsia. Women & Infants awarded nearly $5M for perinatal research 2015-06-08T04:00:00Z Also, greater placental transfer of arsenic from mother to fetus was observed at high placental arsenic concentrations, the researchers said. Placenta Test Measures Babies' Exposure to Arsenic 2015-04-07T04:00:00Z I was well into my third trimester when a blood-clotting disorder caused placental abruption, and I knew he would not be born alive before I went into labor. A Photo of a Stillborn Baby, Proof of Life, and Grief and Memory 2014-12-11T05:00:00Z “Barbara Comstock supports adult stem cell research, and the Virginia state budget does fund adult and placental stem cell research,” said Comstock campaign manager Susan Falconer. Outside groups launch attacks in Va. congressional race The findings support previous research indicating that PCE exposure may affect placental function and fetal growth. Drinking Water Contaminant Linked to Pregnancy Complications in Study 2014-10-03T04:00:00Z Taken by a pregnant woman, the drugs cross the placental barrier, affecting the fetus. Possible Risks of S.S.R.I. Antidepressants to Newborns 2014-09-01T04:00:00Z The findings "support placenta as a potentially useful biomarker of arsenic exposure, particularly in studies of placental function. They suggest greater maternal-fetal transfer when placental arsenic is high," Punshon said in a university news release. Placenta Test Measures Babies' Exposure to Arsenic 2015-04-07T04:00:00Z In most other mammals, the placental attachment is much more superficial. The Push to Understand the Placenta 2014-07-14T04:00:00Z THC crosses the placental barrier, just as alcohol does. Everything you want to know about legal pot in Washington 2014-06-30T04:00:00Z In my practice, primarily patients with Type 2 diabetes, we treat foot ulcers with an allograft called EpiFix, which is made from dehydrated placental tissue. Reactions 2014-05-26T04:00:00Z And the placental microbiome’s apparent similarities to the smorgasbord of oral microorganisms also reignites the debate about links between the role of mother’s gum disease and preterm births. How Bacteria in Placenta Could Help Shape Human Health 2014-05-21T04:00:00Z "Our findings show placental arsenic concentrations reflect both maternal and fetal biomarker concentrations," said the study's lead author, Tracy Punshon, a research assistant professor of biological sciences at Dartmouth College in Hanover, N.H. Placenta Test Measures Babies' Exposure to Arsenic 2015-04-07T04:00:00Z The researchers examined placental tissue collected in Houston from a diverse group of 320 women. Microbes inhabit the human placenta, but it's not a bad thing 2014-05-21T04:00:00Z They found that the placental microbiome was most similar to that of the mouth. Bacteria found in healthy placentas 2014-05-20T04:00:00Z However, Romero and others caution that it’s too soon to say exactly how the placental microbiome got there and what it’s doing. Placenta Harbors Bacteria, May Impact Fetal Health 2014-05-21T04:00:00Z She added, “We are just starting to catch a glimmer of this amazing organ that defines placental mammalian biology.” Study Sees Bigger Role for Placenta in Newborns’ Health 2014-05-21T04:00:00Z But babies held that way didn’t seem to get any more placental blood than babies held in their mother’s arms instead, the new study found. Mothers can hold newborns before umbilical cord is clamped: study 2014-05-05T20:07:51Z More than 300 types of bacteria were detected in this placental tissue, with the well-known E. coli the most abundant, Versalovic said. Microbes inhabit the human placenta, but it's not a bad thing 2014-05-21T04:00:00Z In the new study, the researchers took samples of placental tissue from 320 women just after delivery, extracted DNA from the tissue and sequenced it. Bacteria found in healthy placentas 2014-05-20T04:00:00Z Despite these unknowns, says microbiologist Seth Bordenstein of Vanderbilt University in Nashville, the discovery of a placental microbiome “continues to build the snowball that no tissue in the human body is sterile.” Placenta Harbors Bacteria, May Impact Fetal Health 2014-05-21T04:00:00Z The scientists searched the placental tissue for bacterial DNA, using a technique called shotgun metagenomic sequencing. Study Sees Bigger Role for Placenta in Newborns’ Health 2014-05-21T04:00:00Z These include genetic factors and maternal health problems like hypothyroidism, placental abnormalities, major bleeding during pregnancy, infection of the fetal membranes and a stroke in the baby around the time of birth. Well: Hurt Before the Birth 2014-05-05T04:01:06Z “And that doesn’t change the amount of placental transfusion, and facilitates the procedure for the obstetrician.” Well: An Easier Way to Delay Cutting the Cord 2014-04-16T22:30:25Z "I am trying to piece together the conditions under which the ancestral placental mammals evolved so incredibly rapidly once the asteroid impact killed off the non-avian dinosaurs 65 million years ago." Secrets of the speedy elephant shrew 2014-01-16T02:56:51Z It carried the ancestors of plants, a certain type of placental mammals and insects from Gondwana to the Northern Hemisphere. Scientists trace origins of India’s tigers, elephants and other large mammals 2013-09-02T22:19:00Z Lucas was delivered by emergency Caesarean section after his 31-year-old mother, from West Derby, developed placental abruption. 'Miracle' of baby born at 23 weeks 2013-08-13T08:30:11Z Even constraining clade ages to their model, the explosive model best explains placental evolution. [Technical Response] Response to Comment on “The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals” 2013-08-08T17:55:23.633Z Fossils and nonplacentals were pruned to highlight relationships among living placentals. [Technical Comment] Technical Comment on “The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals” 2013-08-08T17:55:19.813Z "It also allows time for the transfusion of placental blood to the newborn, especially in cases of premature birth." Cutting cord early 'risk to babies' 2013-04-26T10:39:48Z In other words, it is extremely likely that a child with four placental TIs is at high-risk for autism, Kliman said. Autism Linked to Placenta Abnormalities 2013-04-26T10:15:00.213Z Scientists recently proposed that the first mammalian Eve, the mother to all placental mammals, lived about 65 million years ago, when dinosaurs went extinct. Tiny Primitive Mammal Unearthed in Japan 2013-03-27T18:45:00.550Z Typically, we think only of the sub-group of mammals like us, the so-called placental mammals. Found: Our Most Distant Ancestor -- Humanity's Great-Grand-Rat 2013-02-08T16:35:27Z This conclusion relies on phylogenetic analyses that fail to discriminate between homology and homoplasy and further implies virus-like rates of nucleotide substitution in early Paleocene placentals. [Technical Comment] Technical Comment on “The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals” 2013-08-08T17:55:19.813Z From humans to whales to bats, the placental mammals—so named for the placenta that nourishes the fetus during development—are mind-bogglingly diverse. Meet the Last Common Ancestor of Bats, Whales, Sloths and Humans 2013-02-07T22:15:04.750Z They also compared 27 different genes common to all placental mammals. Ancestor of All Placental Mammals Revealed 2013-02-07T19:20:00Z "This little critter, Sasayamamylos, is the oldest Eutherian mammal to demonstrate what paleontologists consider the modern dental formula in placental mammals," Davis told LiveScience. Tiny Primitive Mammal Unearthed in Japan 2013-03-27T18:45:00.550Z Mammals have been around for hundreds of millions of years, but placentals for only tens of millions. Found: Our Most Distant Ancestor -- Humanity's Great-Grand-Rat 2013-02-08T16:35:27Z She contrasted it with a patient with a placental abruption, whom she recently treated in her own hospital. Clergy are not doctors — and the U.S. has its own Savita Halappanavars 2013-02-07T12:45:00Z But this testing still required a sample of placental tissue. Could a Blood Test Replace Amniocentesis? 2013-01-10T23:05:22Z To help settle the debate, O'Leary and her colleagues reconstructed the family tree of placental mammals using evidence from a large number of living and extinct species. Ancestor of All Placental Mammals Revealed 2013-02-07T19:20:00Z Drawing upside down to make it easier for me to see, he maps out the standard phylogenetic tale for placental mammals. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z It is already possible to determine the DNA sequence of a fetus by acquiring fetal cells through amniocentesis or chorionic villus sampling, which involves testing the placental tissue. Tests of Parents Are Used to Map Genes of a Fetus 2012-06-07T01:55:45Z Between these marsupials and the highest or placental mammals, there occurs “the greatest leap anywhere made by Nature in her brain work.” Pioneers of Evolution from Thales to Huxley With an Intermediate Chapter on the Causes of Arrest of the Movement 2012-04-26T02:00:14.960Z A female, taken on July 7 with two young at a place 33 miles south of Washington Beach, weighed 133 grams and had six placental scars. The Recent Mammals of Tamaulipas, Mexico 2012-04-06T02:00:23.953Z "These new findings call for a reevaluation of the evolutionary story of placental mammals," says Anne Yoder, an evolutionary biologist at Duke University in Durham, North Carolina, who wasn't involved in the work. Ancestor of All Placental Mammals Revealed 2013-02-07T19:20:00Z First, Peterson scratches a line leading to elephants, which branched away from the rest of the placentals around 90 million years ago. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z It is not a little remarkable that the bacillus germ has not yet been found in the placental liquids nor foetal blood of sheep, goats, or rabbits, though swarming in that of the mother. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z These four kinds of omphalosites are either dead when born, or they die as soon as the placental circulation is cut off. Essays In Pastoral Medicine 2012-03-05T03:00:09.993Z Each of two females, captured on January 13, carried five placental scars; one of the females was lactating. The Recent Mammals of Tamaulipas, Mexico 2012-04-06T02:00:23.953Z He and his colleagues took samples of placental tissue from S. stenophylla fruits. Wild flower blooms again after 30,000 years on ice 2012-02-22T18:20:37.307Z When Peterson started his work on the placental phylogeny, he had originally intended to validate the traditional mammal tree, not chop it down. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z Sometimes the thrombus may be traced back to the placental site. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z If there is any probability of life, the physician should give them baptism before the placental circulation is stopped. Essays In Pastoral Medicine 2012-03-05T03:00:09.993Z He and his colleagues took samples of placental tissue from S. stenophylla fruits. Wild Flower Blooms Again After 30,000 Years on Ice 2012-02-21T20:15:17.847Z "But it is a surprise to me that they're finding viable material from this placental tissue rather than mature seeds." Frozen plants spring back to life 2012-02-20T20:35:15Z They have been able to date the origin and diversification of placental mammals, but they are still working to resolve which lineages branched off first — a key test for the phylogenies. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z A virulent form of fever is not unfrequently occasioned by retained coagula or placental d�bris which have undergone decomposition. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The researchers point out that the brains of marsupials are different from placentals in several important ways, which make them an important comparison group for the study of laterality and brain asymmetry. Are Wallabies Left or Right Handed? Both! (Sometimes) 2012-01-27T19:15:00.350Z The researchers considered a number of possible causes, including placental abnormalities, infection in the mother or baby, and maternal medical conditions. Stillbirth Causes Are Tallied, but Risks Remain a Challenge 2012-01-09T17:36:55Z Five hundred parents consented to complete postmortem exams, which included maternal interviews, reviews of prenatal medical records, autopsies, placental evaluations, karyotyping to check for chromosomal abnormalities and other tests. Tests on fetus can help explain stillbirth, study says 2011-12-28T17:26:03Z And one of the best way to develop a better understanding of the causes of stillbirths is to keep collecting data—which means evaluating new cases via placental analysis, autopsy and, when possible, genetic analysis. U.S. Stillbirths Still Prevalent, Often Unexplained 2011-12-13T23:15:05.407Z Cytori is developing a heart disease product derived from fat cells, for example, while Celgene is using placental cells for Crohn's disease and rheumatoid arthritis therapies. Insight: Stem cell therapy poised to come in from the cold 2011-12-04T16:08:57Z For one thing, sensory and motor cortices overlap in marsupials; in placentals, those parts of the brain operate more independently. Are Wallabies Left or Right Handed? Both! (Sometimes) 2012-01-27T19:15:00.350Z It appears to be the oldest known ancestor of placental mammals, according to a research group led by Zhe-Xi Luo, a paleontologist at the Carnegie Museum of Natural History. Meet Your Newest Ancestor 2011-10-29T12:15:02.487Z As with all placental mammals, humans do not use egg yolk as a source of nutrition for their embryos. The Fossils in Our Genes 2011-10-21T18:50:24Z Now he and his colleagues believe that PP13 acts as a decoy, distracting the mother’s immune cells away from the placental attack on the arteries by creating a diversion elsewhere — the mother’s veins. Study Finds Clues to Sneaky Protein Linked to Pre-eclampsia 2011-10-17T21:12:16Z Modern molecular studies, which use DNA to estimate dates of evolution, also put the emergence of placentals at about 160 million years ago. Observatory: Ancestors of Humans and Kangaroos Split Even Earlier, Fossil Indicates 2011-08-24T19:20:53Z Despite significant differences in brain organization, marsupials are just as likely to show some sort of behavioral asymmetry as their placental cousins. Are Wallabies Left or Right Handed? Both! (Sometimes) 2012-01-27T19:15:00.350Z Until now, scientists believed that placental mammals first appeared some 125 million years ago. Meet Your Newest Ancestor 2011-10-29T12:15:02.487Z Living mammals are split into three subgroups: the egg-laying monotremes; the pouched marsupials; and, the most diverse of all, placental mammals, which includes everything from humans to bats to whales. 'Jurassic Mother' Found in China 2011-08-24T18:02:00Z Low-dose aspirin can reduce the risk associated with some placental problems. Personal Health: In Decline, Stillbirths Continue to Devastate 2011-08-15T18:08:35Z Until now, the oldest known ancestor to placentals was a small mammal that dates back about 125 million years, to the Cretaceous period. Observatory: Ancestors of Humans and Kangaroos Split Even Earlier, Fossil Indicates 2011-08-24T19:20:53Z It is the first time this sense has been reported in a marine mammal—or in any placental mammal. Guiana Dolphins Can Use Electric Signals to Locate Prey 2011-07-27T00:03:00Z Lesions corresponding to those on the nipple occur in placental tissues and can be demonstrated without much difficulty. Psychotherapy 2011-06-19T02:00:20.053Z Each group diverged at different times, and determining when marsupials and placentals split from each other has been problematic. 'Jurassic Mother' Found in China 2011-08-24T18:02:00Z There are many factors which are linked to still-birth including obesity, increasing maternal age, ethnicity, congenital anomalies and placental conditions. Sleep position 'still-birth link' 2011-06-14T23:09:08Z About 90 percent of modern mammals are placentals. Observatory: Ancestors of Humans and Kangaroos Split Even Earlier, Fossil Indicates 2011-08-24T19:20:53Z Dr. Horovitz suggested that because embryonic marsupials need well-developed forelimbs to crawl their way to a lactational lifeline, they lose the potential for the diversity of limb and body shape seen in placentals. Basics: A Fast Life and Success That Starts in the Pouch 2011-06-13T23:34:26Z The females were considered to be fecund if they were gravid, or if there were placental scars in the horns of the uteri. Natural History of the Prairie Vole (Mammalian Genus Microtus) [KU. Vol. 1 No. 7] 2011-06-01T02:00:28.617Z Together, these traits indicate that the forerunners of marsupial mammals—called metatherians—and placental mammals diverged even earlier still and have been separated by over 160 million years of evolutionary change. 'Jurassic Mother' Found in China 2011-08-24T18:02:00Z We should thus have both placental and Marsupial mammals in the Mesozoic. The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants 2011-06-01T02:00:24.880Z Based on the teeth, the researchers determined that the mammal was more closely related to modern placentals than to modern marsupials. Observatory: Ancestors of Humans and Kangaroos Split Even Earlier, Fossil Indicates 2011-08-24T19:20:53Z The issue is contentious because the fossil record suggests that placental mammals did not expand, in terms of the number of different species, until after 65 million years ago. As Dinosaurs Waned and Mammals Rose, the Lowly Louse Kept Pace 2011-04-06T20:07:46Z Human milk is dilute compared to the milk of other placental mammals, but it does contain some surprising ingredients. Development: Mother's milk: A rich opportunity 2011-01-04T22:22:32.713Z "This puts down a new evolutionary milestone for the origin of placental mammals, which are important because they make up more than 90% of all of the living mammals," Luo says. 'Jurassic Mother' Found in China 2011-08-24T18:02:00Z Coryphodon is thus, as might be expected in a primal placental mammal, a creature of somewhat generalised type. The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants 2011-06-01T02:00:24.880Z It also appeared in samples of placental tissue. Protein Implicated in Many Cancers 2010-10-21T15:43:00Z But the fossil record of placental mammals is reliable and does not record a speciation until later. As Dinosaurs Waned and Mammals Rose, the Lowly Louse Kept Pace 2011-04-06T20:07:46Z Among the most common causes are birth defects, poor fetal growth and problems with the placenta -- such as placental abruption, where the placenta peels away from the wall of the uterus, leading to heavy bleeding. Stillbirth in first pregnancy may up risk of second 2010-07-16T15:02:00Z Each additional cesarean increases the risk of placental complications that threaten the lives of mother and baby. Rising maternal mortality rate causes alarm and calls for action 2010-06-18T23:14:00Z The Carnivora, however, were subordinate in the Eocene, and, as already remarked, some of them appear to be intermediate between marsupial and placental forms—a fact which evolutionists have noticed with much satisfaction. The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants 2011-06-01T02:00:24.880Z "The body is more tolerant to the cells in the placental blood, even though they are not a perfect match." Cord blood transplants a viable option in leukemia 2010-06-15T22:40:00Z “The fossil record continues to show that the origin of modern placental mammals postdates or is at the Cretaceous-Paleogene boundary,” he said. As Dinosaurs Waned and Mammals Rose, the Lowly Louse Kept Pace 2011-04-06T20:07:46Z But it happened that Pasteur Merieux, a company in Lyon, France, was using placental blood to produce immunoglobulins and albumin, a substance used to expand blood supplies for use in wars or accidents. Special Report: Inside the battle for Genzyme's future 2010-05-05T21:02:00Z But the syncytin genes we use today may have actually replaced an ancestral one that a virus bequeathed to the very first placental mammals. 2010-01-12T05:27:00Z Additionally, we took lactating females on July 6, July 7, and August 7, and two individuals with recent placental scars on August 5. Mammals of Northwestern South Dakota Dogs were also in the possession of the natives of New Zealand and other islands of the Pacific, where no placental mammals exist naturally, on their discovery by Europeans in the 18th century. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" On January 13, 1950, a female taken was lactating and had five recent placental scars; another taken the same day also had five placental scars. Mammals from Tamaulipas, Mexico For example, a female of category 2, taken on August 12, and probably in postjuvenal pelage, had placental scars. Mammals of Mesa Verde National Park, Colorado Sloths and their relatives branched off from all other placental mammals about 100 million years ago. 2010-01-12T05:27:00Z As we ascend the series of 'placental' mammals, we find the lateral coalescence becoming gradually more and more complete.... Essays: Scientific, Political, & Speculative, Vol. I The molar teeth being in excess of almost all other placental mammals with a differentiated series of teeth. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" The great Tertiary volume corresponds to those volumes of Cuvier which treat of the placental animals that suckle their young. The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed No female was recorded to have contained embryos, but two had enlarged uteri or placental scars. Mammals of Mesa Verde National Park, Colorado They were already infecting the common ancestor of all placental mammals back when dinosaurs ruled the Earth. 2010-01-12T05:27:00Z Among the new subjects introduced are the surgical treatment of puerperal sepsis, infant mortality, placental transmission of diseases, serum-therapy of puerperal sepsis, etc. Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine The foal may, however, die from the cessation of the placental circulation unless it is speedily delivered. Special Report on Diseases of the Horse And last of all the true placental mammals appear. The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed Of the females trapped in August, 11 of 32 that were more than 144 mm. in total length contained embryos; an additional 14 females were lactating or possessed placental scars or enlarged uteri. Mammals of Mesa Verde National Park, Colorado In the class of animals the steps are not difficult to conceive which led from the ancient Monotremata to the ancient Marsupials; and from these to the early progenitors of the placental mammals. Evolution in Modern Thought New Holland has merely marsupial and some monotrematous, but no placental, mammalia; even its tertiary strata give no placental mammalia, but marsupialia, in analogy with all living genera, herbivorous, and carnivorous. The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality Thus the fravashi has the same remarkable associations with nourishment and placental functions as the ka. The Evolution of the Dragon The placental mammals make their appearance, as I have said, in the earliest ages of the great Tertiary division, and exhibit in the group an aspect very unlike that which they at present bear. The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed Remarkable similarities between certain placental and implacental mammals, between the bird's-head processes of Polyzoa and the pedicellari� of Echinoderms, between Ichthyosauria and Cetacea, with very many other similar coincidences, have also been pointed out. On the Genesis of Species Looks like a lizard, and it's only four inches long, but it's a real warm-blooded, gamogenetic, placental, viviparous mammal. Omnilingual Primates are eutheria, or true mammalia possessing a placental attachment of the young within the parent. The Doctrine of Evolution Its Basis and Its Scope By this circumstance, I imagine, the terminations of the placental vessels are detached from their adhesions, or insertions, into the membrane of the uterus; and the death of the child succeeds, and consequent miscarriage. Zoonomia, Vol. I Or, the Laws of Organic Life The lower forms attained the placental mode of embryonic development; the higher attained upright gait, hands and feet, and a great increase of brain. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 Amongst other points Professor Huxley called attention to the resemblance between the anterior molars of the placental dog with those of the marsupial thylacine. On the Genesis of Species The next highest form among the mammals are known as the placentals, or those which bring forth mature young. A Series of Lessons in Gnani Yoga Arsenic is a powerful abortive agent in the guinea-pig, probably on account of placental hemorrhages. Anomalies and Curiosities of Medicine While the terminations of the placental arteries and veins are spread in fine reticulation on the sides of these cells. Zoonomia, Vol. I Or, the Laws of Organic Life In higher, true, placental mammals the period of pregnancy is much longer, and the young are born in a far higher stage of development, or rather, growth. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 Perameles, wonderfully correspond, as to the form of certain of the grinding teeth, with certain insectivorous placentals, e.g. On the Genesis of Species The sleep induced toward the close of the previous stage lasts for a few minutes, so that most patients are unconscious through the greater part of the brief placental stage. The Prospective Mother, a Handbook for Women During Pregnancy Stute reports an observation of total absence of the umbilical cord, with placental insertion near the cervix of the uterus. Anomalies and Curiosities of Medicine The placental secretion plays a most important rôle as brake upon the post-pituitary, the most active of the feminizing uterus-disturbing endocrines. The Glands Regulating Personality And yet the persecution, the impossibility of contending by brute strength, may have forced the mammal into the line of brain-building and placental development. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 Even the important Cenozoic or Tertiary period, in which the first placentals or higher mammals appear, probably amounts to little over two per cent of the whole organic age. The Evolution of Man — Volume 2 There is no doubt whatever that the mother's blood surrounds the placental villi but never enters the child. The Prospective Mother, a Handbook for Women During Pregnancy The authors who regard this embryonic form as the primary gastrula of the placental conceive the outer layer as the ectoderm and the inner as the entoderm. The Evolution of Man — Volume 1 Yet the placental secretion must not be looked upon as something wholly evil in its potentialities. The Glands Regulating Personality But increase in size and activity, and the expense of producing each new individual, led to the adoption of placental development. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 The larger the embryo is in the placentals, and the longer it remains in the womb, the more necessary it is to have special structures to meet its great consumption of food. The Evolution of Man — Volume 2 Among the former, the amphibian follows the fish, the reptile follows the amphibian, the mammal follows the reptile, and non-placental mammals are followed by the placental. Time and Change Gastrulation is still more modified and curtailed cenogenetically in the placentals than in the marsupials. The Evolution of Man — Volume 1 Monkeys can co-exist with sloths and opossums, orders at the bottom of the scale; and the opossums might well be beaten by placental insectivores, coming from a country where there were no monkeys, etc. More Letters of Charles Darwin — Volume 1 Not single specimen of any higher, or placental, mammal has yet been found in the whole Mesozoic Era. The Story of Evolution The highest section of this class, the placentals, now made their appearance; to this group the human race belongs. The Evolution of Man — Volume 2 However, opinions still differ considerably as to the real nature of this "provisional gastrula" of the placental and its relation to the blastula into which it is converted. The Evolution of Man — Volume 1 But the corresponding embryonic processes in the viviparous mammals, the marsupials and placentals, are very elaborate and distinctive. The Evolution of Man — Volume 1 Thus the gastrulation of the placentals, which diverges most from that of the amphioxus, the primitive form, is reduced to the original type, the invagination of a modified blastula. The Evolution of Man — Volume 1 The placental structure would be so great an advantage in a cold and unfavourable environment that some writers look to the northern land, connecting Europe and America, for their development. The Story of Evolution We start from the undisputed fact that man is in any case—whether we accept or reject his special blood-relationship to the apes—a true mammal; in fact, a placental mammal. The Evolution of Man — Volume 2 One section of the marsupials still show points of agreement with the monotremes, while another section of them, according to the splendid investigations of Selenka, form a connecting-link between these and the placentals. The Evolution of Man — Volume 1 As the gastrulation proceeds a large spherical blastula is formed from this peculiar solid amphigastrula of the placental, as we saw in the case of the marsupial. The Evolution of Man — Volume 1 We find a decidua of this kind in most of the higher placentals; but it is only in man and the anthropoid apes that it divides into three parts—the outer, inner, and placental decidua. The Evolution of Man — Volume 1 Such evidence as there is seems rather to suggest that South Africa was the cradle of the placental mammals. The Story of Evolution Even if we entirely ignore it, all that we have learned from the zoological facts of comparative anatomy and ontogeny as to the placental character of man remains untouched. The Evolution of Man — Volume 2 The opponents of the unwelcome "ape-theory" laid great stress on this, and thought they had at last discovered an important indication that separated man from all the other placentals. The Evolution of Man — Volume 1 The cenogenetic gastrulation of the placental has been greatly modified by secondary adaptation in the various groups of this most advanced and youngest sub-class of the mammals. The Evolution of Man — Volume 1 The placental decidua serotina is that part of the preceding which is completely transformed by the ingrowth of the chorion-villi, and is used for constructing the placenta. The Evolution of Man — Volume 1 We may provisionally conceive the placental mammals as a group of the South African early mammals which developed a fortunate variation in womb-structure during the severe conditions of the early Mesozoic. The Story of Evolution The Insectivores also developed some of the present types at an early date, and have since proved so unprogressive that some regard them as the stock from which all the placental mammals have arisen. The Story of Evolution We have reserved for a closer inquiry that order of the placental mammals to which we ourselves belong, and on which zoologists have bestowed the very proper and distinguishing name of the Primates. The Story of Evolution But as man also belongs to this sub-class, and as his as yet unstudied gastrulation cannot be materially different from that of the other placentals, it merits the closest attention. The Evolution of Man — Volume 1 It was an age when the primitive placental mammals were just beginning to diverge from each other, and had still many features in common. The Story of Evolution |
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