Articles tagged with Placenta
Researchers at Texas A&M University found that it takes over a month for negative alcohol effects to wear off, and fathers' sperm are still negatively impacted by drinking even during the withdrawal process. The study suggests that men should abstain from alcohol at least three months prior to conceiving.
A new study finds that a hormone produced by the fetus and a mother's sensitivity to it are the causes behind nausea and vomiting during pregnancy. Lowering GDF15 levels or pre-exposing women to the hormone may mitigate symptoms, providing potential ways to prevent extreme forms of pregnancy sickness.
A multicenter observational cohort study found that cannabis exposure was associated with a higher risk of small-for-gestational-age birth, medically indicated preterm birth, stillbirth, and hypertensive disorders of pregnancy. The risk was particularly pronounced among those who continued to use cannabis beyond the first trimester.
Researchers discovered how biological information travels between mothers and babies during pregnancy. Microscopic extracellular vesicles, produced by placental cells, act as a protective mechanism transporting important biological information to emerging neurons.
A study published in Science Advances found that abnormal cell stress in the placenta's syncytiotrophoblast layer may lead to preeclampsia. Researchers also developed a mouse model to demonstrate the effects of this stress, showing similar signs of high blood pressure and kidney damage.
A new study discovered microplastics in the placentas of Hawaiʻi mothers between 2006 and 2021, with increasing presence found each year. The researchers believe microplastics may be ingested through food or inhaling dust particles, raising concerns about their impact on fetal health.
A research team at Iowa State University is developing a 'placenta-on-a-chip' model to study substance transport across the placental barrier. The project aims to integrate sensing platforms and imaging technology to advance personalized medicine and commercialization.
Researchers at Yale University found a protein, CXCR4, plays a crucial role in modulating the immune system during pregnancy. The study suggests that this protein may be targeted for new treatments of reproductive conditions such as recurrent pregnancy loss and preeclampsia.
Research suggests that the gut microbiome plays a crucial role in forming a healthy placenta during pregnancy. Mice with depleted gut microbiomes had smaller placentas and less-developed blood vessels, which can deprive fetuses of nutrients. However, supplementing these mice with short-chain fatty acids restored placental growth.
Research reveals that faster placental growth increases the risk of preeclampsia and shorter pregnancy duration. Genetic variations affecting placental size also influence baby weight and mother's health.
A new study has identified 40 genetic variations linked to placental growth, which can contribute to the risk of preeclampsia and earlier delivery. Faster-growing placentas were also found to be associated with shorter pregnancies.
Researchers at Baylor College of Medicine have discovered a potential treatment for Zika-associated fetal abnormalities using microRNA. They found that the antibiotic enoxacin can abolish placental Zika virus persistence and rescue associated microcephaly in mouse models.
Researchers at Yale University have developed an expanded classification system for pregnancy losses based on pathologic examination of loss placentas. This system accurately determined the pathologic diagnoses for over 90% of previously unexplained pregnancies, including miscarriages and stillbirths.
Researchers at Rutgers University analyzed urine samples from pregnant women to understand how the placenta regulates cadmium exposure. They found that as cadmium levels increased, free testosterone levels decreased, suggesting a link between cadmium and fetal brain development.
The placenta forms an unusual organ that requires unique cooperation between genetically mismatched maternal and fetal cells. Researchers have mapped the intricate dance between trophoblasts and the mother's immune system, shedding light on how to develop new treatments for pregnancy complications like preeclampsia and miscarriages.
A joint study reveals significant alterations in gene regulation within the placenta due to COVID-19 infection, potentially leading to abnormal blood vessel formation and fetal growth restriction. The research also identifies dysregulation of angiogenesis genes and downregulation of pregnancy-specific glycoprotein genes.
Fetuses use a copy of a gene inherited from their dad to force their mum to release as much nutrients possible during pregnancy. This 'remote-control' system is operated by genes that can be switched on or off depending on whether they are a 'dad's' or 'mum's' gene.
Researchers created a high-resolution map of the human placenta to understand how viruses interact with it during pregnancy. The study found that the placenta has immune microenvironments that can control viral growth, and in rare cases, the virus can cause significant tissue damage.
Researchers at CU Anschutz Medical Campus have found that vaping nicotine during pregnancy can be detrimental to the baby, disrupting bone and lung development. The study suggests that nicotine in e-cigarettes is just as harmful as that in traditional cigarettes.
Researchers have identified a gene in the placenta that produces a defense mechanism against viral infections, protecting fetuses during pregnancy. This discovery could lead to the development of new anti-viral treatments.
A new study from the Stowers Institute for Medical Research reveals the placenta's polyploid cells play a vital role in supporting healthy embryonic development. The modified cell cycle controlling polyploidy is governed by the regulatory gene Myc, which supports DNA replication and prevents premature cellular aging.
A study of 1,050 pregnant women found frequent detection of HPV, with infrequent perinatal transmission. The authors note challenges in distinguishing contamination from true infection, particularly in placentas.
The study reveals that mammals diversified before the K-Pg extinction, driven by continental drifting and stability following the mass extinction. This led to the rich diversity of mammal lineages, including carnivores, primates, and hoofed animals.
Researchers found that maternal overweight compromises the placenta's antiviral response, weakening its ability to protect the fetus. The study suggests that adequate antenatal care is crucial in preventing complications from Zika infection.
Scientists have mapped the complete trajectory of placental development, shedding light on why pregnancy disorders occur. The study reveals new information on cell communication and trophoblast development, providing a better understanding of the process.
Research found maternal obesity reduces placental formation, blood vessel density, and nutrient exchange capacity. Both obesity and gestational diabetes impact placental hormone production and inflammation markers.
Targeted RNA therapy aims to treat pre-eclampsia by delivering mRNA to placental cells, reducing maternal blood pressure and restoring fetal circulation. The treatment has shown promising results in mice, paving the way for potential treatments for human patients.
Research suggests that using cannabis in the first six to 14 weeks of pregnancy is associated with poor fetal growth and an increased risk of developing high blood pressure during pregnancy. The study analyzed urine samples from over 9,200 participants and found a significant link between cannabis use and adverse placental function.
A study published in International Journal of Environmental Research and Public Health found that breastfeeding can reduce arsenic exposure in infants compared to formula feeding. Researchers measured arsenic levels in mothers, babies, and breast milk, revealing a clear association between maternal and neonatal arsenic exposure.
A new WVU study found nearly one in eight West Virginia infants had in utero exposure to opioids, stimulants, and/or cannabis between 2020 and 2022. The study showed a 40% increased risk of preterm birth among infants exposed to stimulants alone and a 70% increase with concurrent stimulant and cannabis exposures.
Pregnant women infected with Covid-19 may experience varying degrees of damage to their placentas, potentially harming fetal development and health. The study found that pre-Omicron variants caused more severe lesions than Omicron subvariants.
Researchers developed a blood test using circulating microparticle proteins to predict placenta accreta spectrum (PAS) cases as early as the second trimester. The study found five unique proteins that can distinguish PAS patients from control patients, enabling safe predication before delivery.
Researchers found that early prenatal alcohol exposure changes gene function and epigenome in placenta and human embryonic stem cells. These changes are associated with altered DNA methylation patterns, particularly in genes linked to nervous system development, such as DPPA4 and FOXP2.
Researchers found that excess fat triggers immune cells to overeat serotonin in the brain of developing male mice, leading to depression-like behavior. Female mice are not affected in the same way, with higher levels of oxytocin linked to social withdrawal.
Researchers found that ancient viral DNA in the human genome can act as antivirals, protecting human cells against certain viruses. The study, published in Science, provides proof of principle for this effect and reveals a potential genome defense system.
A new study found that gestational exposure to the flame retardant FM 550 resulted in altered brain development in newborn rats, with effects more pronounced in male offspring. The study also showed evidence of mitochondrial disruption and dysregulated choline and triglyceride levels in brain tissue.
A recent literature review found that vaccination against SARS-CoV-2 can effectively prevent adverse conditions such as stillbirth and infant death. Pregnant women with COVID-19 have an increased risk for stillbirth compared to uninfected women, and those who vaccinate can more effectively prevent these events.
Research reveals that pregnant smokers decrease their daily cigarette count by an average of one cigarette per day before realizing they are pregnant. This trend continues in the month following pregnancy recognition, with a decline from nine to five cigarettes per day on average.
Researchers developed a novel 3D microfluidic device to study complicated processes within the placenta, including placental malaria. The model demonstrates that CSA-binding infected erythrocytes add resistance to the simulated placental barrier for glucose perfusion and decrease glucose transfer across this barrier.
Scientists propose a new therapy for preeclampsia by correcting placental defects with BH4 treatment. The treatment restores placental and fetal weight, lowers blood pressure, and resolves symptoms of excess protein in urine and cardiovascular abnormalities.
Researchers developed a novel method to monitor oxygen levels in the placenta using optical measurements and ultrasound, providing insights into its function and structure. The device showed promise in detecting placental dysfunction and differentiating between healthy and diseased placentas.
A study published in Lancet Regional Health – Americas found that malaria in pregnancy is still a major public health problem in the North of Brazil, with younger women being most at risk. The researchers believe that expansion of healthcare services and inclusion of artemisinin in therapeutic schemes contributed to the decline in cases.
A new study found evidence that multituberculates, an extinct group of mammals, likely reproduced in a placental-like manner. This discovery questions the long-held idea that marsupials were less advanced than placentals in terms of reproductive strategy.
Researchers at OHSU developed an efficient and accurate assessment of placental health using standard MRI, detecting complications early in pregnancy. The method identifies T2* values that provide key information about oxygen availability and placental blood flow.
Studies in rats have found that T-cells produce reactive oxygen species (ROS) that contribute to preeclampsia complications. Researchers are exploring ways to dampen this response to reduce the risk of premature birth or worse outcomes for mother and child.
Children born to mothers with polycystic ovary syndrome (PCOS) are at a higher risk of developing infections, allergies, and other childhood illnesses by age 13. The study found that children of mothers with PCOS were 32% more likely to be admitted to hospital for various health problems.
Researchers using 'blastoids' - in vitro models of the blastocyst - discovered that early embryonic signals induce placental development and prepare the uterus. The findings may contribute to a better understanding of human fertility and potentially improve IVF procedures, fertility drugs, and contraceptives.
A water birth significantly reduces the use of epidurals, injected opioids, episiotomy, pain, and heavy bleeding after birth, while increasing mothers' satisfaction levels and the odds of an intact perineum. A water immersion also increases the likelihood of an intact perineum and reduces episodes of umbilical cord breakage.
A new study uses gene expression patterns to reconstruct the evolution of the placenta and predict its characteristics in early mammals. The research suggests that the placenta was invasive in the last common ancestor of eutherian mammals, with non-invasive placentas evolving multiple times among mammals.
A recent study published in Cellular and Molecular Life Sciences found that a specific type of gut bacteria, Bifidobacterium breve, plays a crucial role in regulating fetal growth and metabolism during pregnancy. The researchers discovered that the maternal microbiome promotes development of the placenta and healthy growth of the baby ...
Researchers discovered that midgestation leptin surge in preeclampsia leads to endothelial dysfunction, blood vessel constriction, and restricted fetal growth. This finding highlights the crucial role of leptin in pregnancy and its potential consequences on maternal and infant cardiovascular health.
A new UCLA study reveals how air pollutants affect placental cells, leading to pregnancy complications and infant health issues. Chronic exposure to traffic-related pollutants triggers immune activation, attacking vital placental cells and disrupting nutrient supply.
Researchers at Brigham and Women's Hospital studied mRNA vaccine safety in pregnant women, finding no Spike protein expression in placentas. The study provides further evidence of mRNA vaccine safety, supporting expanded vaccination efforts for vulnerable populations.
Researchers have identified the Xist gene as a critical regulator of fetal development in mice, leading to miscarriage and abnormal placentas when epigenetic instructions are missing. The study's findings suggest that failed Xist imprinting can be 'cured' by targeting specific genes involved in histone modifications.
A new Cambridge study has discovered that the sex of a fetus can affect placenta function, diet-induced maternal obesity, and stress. Designing sex-specific therapies and personalized lifestyle interventions could have lifelong health benefits for children.
Rutgers scientists found that inhaled nanoparticles can migrate from the lungs to the placenta and possibly fetal tissues after maternal exposure throughout pregnancy. This discovery raises concerns about the potential health effects of nanoparticle exposure on human fetuses.
A new video tool aims to help mothers understand that stillbirth is not their fault by explaining the aging process of the placenta. The research identifies that unexplained stillbirth is often due to 'aging of the placenta,' which is complex and not affected by the mother's behavior.
A blood test may identify risk of stillbirth and placentitis in pregnant individuals who have had COVID-19. The finding could improve care for high-risk pregnancies and lead to the development of a new screening tool.
The placenta plays an active role in transferring vitamin D to the fetus during pregnancy, according to a new study. The research found that the placenta takes up vitamin D through endocytosis, which enables it to deliver this essential nutrient to the developing fetus.
Researchers from Tokyo Tech elucidated the molecular evolution of NRK, revealing a novel mechanism regulating placental development by modulating the CK2-PTEN-AKT pathway. The study showed that NRK underwent rapid molecular evolution to acquire its function in eutherian ancestors.