Tag

Embryos

All articles tagged with #embryos

science6 days ago•4 min saved

Oldest Amniote Embryos Hint Early Reptiles Gave Birth Alive

Brazilian and Uruguayan fossils from the Early Permian reveal 280-million-year-old mesosaur embryos preserved inside adults and an isolated egg, suggesting mesosaurs may have retained embryos in the uterus or laid eggs at late development; this finding pushes the oldest known amniote embryos and earliest viviparity back by about 60 million years, offering rare insights into reproduction and potential parental care in Paleozoic reptiles.

via The Daily Galaxy|

#amniotes #embryos #mesosaurs

health1 month ago•17 min saved

Utah Biotech Claims Lab-Grown Sperm Can Create Embryos, Fueling Fertility Breakthrough Debate

A Utah startup, aided by Mayo Clinic, says it has grown mature sperm from spermatogonial stem cells in the lab and used them to generate preliminary human embryos for safety testing, signaling a potential fertility breakthrough, but the findings haven’t been peer‑reviewed yet and costs could be a barrier.

via Gizmodo|

#embryos #fertility #health

biotech1 month ago•9 min saved

Biotech Start-Up Claims Lab-Grown Sperm Could Help Infertile Men (Awaiting Validation)

Utah-based Paterna Biosciences says it has found a way to coax sperm-forming stem cells from testicular tissue to become mature, functional sperm in a lab and used this sperm to create embryos; the work has not yet been peer-reviewed or independently verified, and the company plans larger studies to compare lab-made and natural sperm in men with infertility before attempting pregnancies; if validated, the approach could offer a biological option for some infertile men, but questions of cost and safety remain.

via WIRED|

#biotech #biotech-startup #embryos

space-exploration1 month ago•75 min saved

Space reproduction hurdles: microgravity slows sperm and embryo development

A University of Adelaide study used a 3D clinostat to simulate microgravity and found that sperm from humans, mice, and pigs had about 30% fewer chances to reach eggs in microgravity, while embryos formed under these conditions initially appeared stronger but degraded with longer exposure. The results suggest mammalian reproduction in space could be highly challenging for long-term space settlements, though future work could explore partial gravity (Moon/Mars) and potential IVF advances on Earth.

via Space|

#embryos #ivf #microgravity

science2 months ago•5 min saved

China's 200+ Pterosaur Eggs Hint at Early Flight Development

In northwestern China, researchers uncovered more than 200 fossilized eggs from the flying reptile Hamipterus tianshanensis in a single sandstone block, including at least 16 embryos preserved in three dimensions. Dated to about 120 million years ago in the early Cretaceous, the find provides one of the largest pterosaur egg collections and suggests rapid burial by floodwaters aided preservation. CT scans indicate that some embryos lacked fully developed wing structures while the femur was well developed, implying hatchlings might have been flightless; however, researchers caution against over-interpretation. The discovery greatly expands sample size for studying egg and embryo variation and the origins of flight in pterosaurs.

via The Daily Galaxy|

#cretaceous #embryos #fossil-eggs

science3 months ago•4 min saved

Oldest Mesosaur Embryos Hint at Early Live Birth in Reptiles

Researchers report 280-million-year-old mesosaur embryos from Brazil and Uruguay, providing the oldest direct evidence that these ancient aquatic reptiles could give birth to live young, pushing the origin of viviparity back about 60 million years; findings also indicate potential parental care, with some fossils suggesting a mixed strategy where at least one egg was found at an advanced stage of development.

via The Daily Galaxy|

#embryos #mesosaurs #paleontology

science7 months ago•5 min saved

Scientists Create Human Eggs from Skin Cells in Landmark Fertility Breakthrough

Scientists have successfully produced functional human eggs from skin cells in the lab, which can be fertilized to form early-stage embryos, potentially offering new fertility treatments, though significant technical and ethical challenges remain.

via WIRED|

#chromosomal-abnormalities #embryos #fertility-treatment

science1 year ago•2 min saved

Scientists Uncover How Fish Embryos Choose Their Hatch Date

Researchers from Hebrew University of Jerusalem have discovered that fish embryos, such as those of zebrafish and medaka, can control their hatching time by releasing thyrotropin-releasing hormone (Trh), which triggers enzymes to dissolve the egg wall. This process allows embryos to hatch under optimal environmental conditions, enhancing survival. The study highlights the evolutionary significance of this mechanism, which is shared by distantly related species, and suggests further research into how climate change might affect these hatching strategies.

via ScienceAlert|

#embryos #evolution #fish

opinion2 years ago•2 min saved

"The Shifting Landscape of Abortion Politics in America"

The pro-life movement faces criticism and accusations of hypocrisy following the Alabama Supreme Court's ruling that I.V.F. embryos are subject to the state's wrongful death statute, prompting pro-life Republicans to backtrack on their stance. This has led to concerns that the movement is acquiescing to a more pro-choice position, with Donald Trump's recent pledge not to sign a national abortion ban adding to the shift. The traditional pro-life argument asserts the incalculable worth of every human life from the moment of conception, but pro-choice advocates argue that the movement is about power and control, seeking to limit women's choices and maintain male dominance.

via The New York Times|

#abortion #alabama-supreme-court #donald-trump

healthtech2 years ago•2 min saved

"Startup Defends Embryo Selection as Ethical, Not Eugenics"

Noor Siddiqui, founder of reproductive startup Orchid, defends her company's practice of allowing parents to select embryos based on genetic traits, insisting it's not eugenics despite the literal meaning of the term. In a contentious interview with Wired, she faced scrutiny over the implications of genetic selection, particularly in relation to her own family history. Orchid offers whole-genome sequencing of embryos for a steep price, sparking ethical debates about the implications of such technology as a consumer service.

via Futurism|

#biotech #embryos #eugenics

us2 years ago•2 min saved

"Alabama's IVF Journey: From Halt to Protection"

After the Alabama Supreme Court ruled that frozen embryos should be considered "extrauterine children" under state law, several fertility clinics in the state suspended I.V.F. treatments, causing setbacks for couples like Leelee and Austin Ray, who had been trying to have a baby for six years. The ruling disrupted expensive, physically and emotionally taxing fertility treatments, and may soon be repeated in other states as anti-abortion forces push to redefine the beginning of life.

via The New York Times|

#alabama #embryos #fertility-treatments

health2 years ago•2 min saved

"Challenges and Controversies Surrounding IVF Legislation in Alabama"

The Alabama legislature is expected to pass a bill allowing fertility clinics to reopen without the threat of lawsuits, following a recent Alabama Supreme Court ruling that embryos are considered children. The bill creates legal immunity for providers of fertility services, preventing them from being sued or prosecuted if embryos are damaged or destroyed. However, this legislation has sparked debate as it limits patients' ability to sue in cases of mishaps with embryos, potentially making it vulnerable to court challenges.

via The New York Times|

#alabama #embryos #fertility-clinics

health2 years ago•4 min saved

"Alabama's IVF Legislation: Navigating the Intersection of Law and Reproductive Rights"

Alabama lawmakers are advancing legislation to protect in vitro fertilization (IVF) providers from lawsuits and criminal prosecution following a court ruling equating frozen embryos to children, which led to the pause of IVF services in the state. The proposed bills aim to shield providers from liability for the damage or death of embryos during IVF services. Patients and providers have faced uncertainty and emotional distress, prompting lawmakers to fast-track the immunity legislation. The court ruling, based on anti-abortion language added to the Alabama Constitution in 2018, has sparked a debate over reproductive rights and the legal status of embryos, with Republicans grappling with the unintended consequences of the amendment.

via The Associated Press|

#alabama #embryos #health

legal-healthcare2 years ago•3 min saved

"Alabama IVF Clinic Faces Fourth Lawsuit Amid Fetal Personhood Legislation Turmoil"

A Florida couple has become the fourth to sue an Alabama IVF clinic over destroyed frozen embryos, following a state Supreme Court ruling that deemed frozen embryos as children for wrongful-death claims. The ruling has caused widespread concern among doctors and IVF patients, leading to a pause in procedures at nearly half of Alabama's IVF clinics. The controversial ruling has sparked political and religious debates, with lawmakers in Florida drafting a bill in response. Alabama legislators are now rushing to pass legislation to protect IVF providers and patients from criminal or civil liability.

via The Washington Post|

#alabama #embryos #ivf

healthcarelaw2 years ago•2 min saved

"Alabama Lawmakers Consider Immunity Laws for IVF Providers Amid Controversy"

Alabama lawmakers are advancing legislation to protect in vitro fertilization (IVF) providers from lawsuits and criminal prosecution following a court ruling equating frozen embryos to children, which led to the pause of IVF services in the state. The proposed bills aim to shield providers from civil liabilities for the "damage or death of an embryo" during IVF services, with final approval pending and Governor Kay Ivey expected to sign the legislation into law. The court ruling's impact has sparked concerns and backlash, affecting patients' paths to parenthood, while Republicans and Democrats propose differing solutions to address the legal status of embryos created in IVF labs.

via The Associated Press|

#alabama #embryos #healthcarelaw