Tag

Placenta

All articles tagged with #placenta

science24 days ago•5 min saved

Placenta-Derived Vesicle Nasal Spray Improves Cognition in Alzheimer’s Mouse Model

A Translational Neurodegeneration study in mice shows that a nasal spray containing extracellular vesicles derived from human placenta (hAMSC-EVs) reached the hippocampus and improved cognitive performance in Alzheimer's-model mice after six months of twice-weekly dosing. The treatment reduced amyloid-beta deposits and neuroinflammation, and increased neuroplasticity markers (ARC, GluA1, BDNF), though it did not affect tau phosphorylation. Separate experiments with patient-derived neurons suggested neuroprotective effects. Researchers emphasize this is preclinical and human efficacy is unproven, but placenta-derived EVs could represent a promising direction pending further study.

via ScienceAlert|

#alzheimers-disease #extracellular-vesicles #hippocampus

science1 month ago•12 min saved

Eight Percent DNA: How Ancient Viruses Built the Placenta

About 8% of the human genome comes from ancient retroviruses. A viral gene called syncytin was repurposed to form the placental barrier, and different mammal lineages independently co-opted viral genes to solve the same reproductive problem, showing how ancient infections helped shape our biology.

via Space Daily|

#dna #endogenous-retroviruses #evolution

health3 months ago•11 min saved

Placenta Rights: Why Birth Plans Should Include Disposal Choices

The Conversation argues placenta disposal should be discussed during pregnancy rather than treated as a postbirth disposal issue. Cultural meanings of the placenta vary globally, and discussing options—such as taking the placenta home, burial, or safe disposal—with midwives can respect cultural beliefs, reduce distress, and improve safety. UK NHS guidelines vary, but proactive discussions within birth planning can ensure women’s choices are informed and supported.

via The Conversation|

#birth-plans #cultural-practices #health

science4 months ago•11 min saved

Ancient viral DNA helped shape the human placenta

About 8% of the human genome is derived from ancient retroviruses; some of these viral sequences, notably the syncytin genes, have been repurposed to drive placental formation, with decisive knockout data in mice and strong but inferential evidence in humans; across mammals, multiple independent viral captures suggest placental evolution repeatedly borrowed viral tools rather than a single origin.

via Space Daily|

#endogenous-retroviruses #genome-evolution #placenta

health6 months ago•69 min saved

Pregnancy-specific cell type found at maternal-fetal interface may regulate placental invasion

Live Science reports a Nature study that created a single-cell atlas of placental and uterine tissues from weeks 5–39 of pregnancy, analyzing about 1.2 million cells and identifying a previously undescribed pregnancy-only cell type, decidual stromal cell 4 (DSC4), at the maternal–fetal interface. DSC4 appears to help regulate fetal invasion into the uterus and arteries and carries cannabinoid receptors, a finding that could help explain cannabis-associated risks in pregnancy. By linking cell activity to genes tied to preeclampsia, preterm birth, and pregnancy loss, the atlas highlights which cells may drive complications and offers new targets for future research and therapies.

via Live Science|

#health #placenta #preeclampsia

science7 months ago•100 min saved

Preeclampsia reimagined as a possible killer of Neanderthals, experts call it a thought experiment

A new study argues that preeclampsia, a pregnancy complication, could have reduced Neanderthal fertility and contributed to their extinction, but leading paleoanthropologists say the claim is speculative and labels it a thought experiment rather than a proven cause.

via Live Science|

#extinction #neanderthals #paleoanthropology

science1 year ago•8 min saved

Mini Organs Unveil Key Insights into Women's Health

Scientists are developing mini organoids of the placenta, ovaries, and uterine lining to better understand women's reproductive health, addressing limitations of animal models and exploring conditions like pre-eclampsia and endometriosis, with potential to revolutionize diagnosis and treatment.

via Nature|

#endometrium #organoids #placenta

health1 year ago•6 min saved

Short Air Pollution Exposure Triggers Placental Inflammation

Research indicates that even brief exposure to air pollution can cause structural and inflammatory changes in the placenta, potentially increasing the risk of pregnancy complications like preeclampsia, highlighting the importance of reducing air pollution exposure during pregnancy.

via Live Science|

#air-pollution #health #inflammation

health1 year ago•5 min saved

The Growing Trend of Expensive Placenta Smoothies

The article discusses the rising trend of consuming placenta in various forms such as capsules, smoothies, and artwork, fueled by celebrity endorsements and social media, despite lacking scientific evidence of health benefits and posing potential health risks like infection and metal contamination.

via The Times|

#health #health-risks #placenta

entertainment1 year ago•2 min saved

Calvin Harris and Vick Hope Welcome Their First Child, Micah

DJ Calvin Harris announced the birth of his son Micah on 20 July, sharing photos of the post-birth moments and a graphic image of the placenta, which sparked mixed reactions online. The post included praise for normalizing childbirth and the organ's significance, though some found the images graphic or unnecessary.

via BBC|

#birth #calvin-harris #entertainment

entertainment1 year ago•1 min saved

Calvin Harris Celebrates Birth of Son Micah with Wife Vick Hope

Calvin Harris announced the birth of his son Micah and shared photos including images of his wife's placenta, which they appear to be dehydrating for health benefits, along with pictures of the water birth and family moments.

via TMZ|

#calvin-harris #entertainment #newborn

science1 year ago•4 min saved

Placental hormones may have fueled human brain evolution

A new study suggests that hormones produced by the placenta, such as estrogen and testosterone, may have played a crucial role in the evolution of the human brain and social traits by influencing brain size, connectivity, and social behavior, highlighting pregnancy as a key factor in human development.

via Earth.com|

#brain-development #hormones #human-evolution

health1 year ago•6 min saved

CDC Updates COVID Vaccine Guidelines Amidst R.F.K. Jr. Controversy

The article discusses the importance and safety of COVID vaccination during pregnancy, highlighting that pregnant women are at higher risk of severe illness and complications from COVID, including effects on the placenta and increased risk of blood clots. Despite some recent policy changes removing the vaccine from recommended schedules for pregnant women, scientific evidence supports vaccination to protect both mothers and infants, with ongoing research emphasizing its benefits. The article also notes concerns about reduced surveillance and access issues due to policy shifts.

via NPR|

#covid-vaccine #health #maternal-health

astronomy-and-biology2 years ago•3 min saved

"Uninfluential Black Hole and Adorable Bug: Saturday's Galactic Discoveries"

Researchers study an anemic blue compact dwarf galaxy, I Zwicky 18, using the James Webb Telescope, finding extreme populations of massive stars and large supershells of dust and ionized gas. A new genus of fluffy longhorn beetle, Excastra albopilosa, is discovered in Australia, possibly evolving its fuzzy coat as a predator deterrent. Astronomers report that quasar H1821+643, located 3.4 billion light-years from Earth, has little influence on its surroundings compared to other black holes. Duke University researchers develop a technique to capture high-definition images of mouse placental development, tracking blood vessel size and density, and oxygen levels from early to late pregnancy stages.

via Phys.org|

#astronomy-and-biology #beetle #black-hole

health-and-environment2 years ago•2 min saved

"Alarming Discovery: Microplastics and Toxic Chemicals Found in Human Placentas"

Scientists have discovered microplastics in all 62 human placentas they examined, with polyethylene being the most frequently detected type. This finding raises concerns about the potential impact on human health, as microplastics have been linked to DNA damage, immune and metabolic system issues, and other health problems. The discovery is particularly worrying as the placenta develops over a short period during pregnancy. Efforts to limit exposure to microplastics and reduce plastic waste are underway, with solutions including specialty water filters and plastic-eating bacteria, but rethinking our relationship with plastic and switching to reusable alternatives is crucial to address this concerning issue.

via The Cool Down|

#environmental-health #health-and-environment #health-impacts