Articles tagged with Embryology
A new Cochrane review analyzed 11 studies involving 2,524 women undergoing embryo transfer, finding no reliable evidence that preparatory techniques improve IVF success rates. The techniques examined included straightening the utero-cervical angle and removing cervical mucus before transfer.
Researchers analyzed 18,396 women undergoing first IVF cycle between 2012-2021 across seven Australian fertility clinics. The study found a 68.2% cumulative live birth rate using single embryo transfer in 95.3% of cases and a multiple birth rate of just 2.9%.
A new Europe-wide survey found broad public support for fertility treatment and reproductive research in the UK, Netherlands, Spain, and Italy. The study suggests that public understanding and opinion on these topics continue to develop, with areas where public views are not yet settled identified.
Research finds that advanced maternal age reduces autophagy in embryos from aged female mice, leading to impaired embryonic development. Supplementation with Rapamycin improves early embryonic development by regulating metabolic pathways.
An international team published a white paper on embryonic models based on stem cells, proposing guidelines for research and regulation. These models can mimic early human development stages, potentially aiding in understanding infertility conditions.
Researchers at ISTA uncovered why keratin plays an essential part in embryonic cell movement and organization. Without keratin, the process slows dramatically, leading to tissue collapse and loss of cellular alignment. Keratin helps maintain the structural integrity and cohesion of cells during early development.
A study by Adelaide University found that even low levels of per- and polyfluoroalkyl substances (PFAS) in tap water can disrupt female fertility, leading to cellular damage, DNA damage, and impairing embryo viability. The study also showed that exposure to PFAS chemicals can be passed on to future generations.
This study reveals that lymphoma cells exhibit organotropism based on their germ-layer origin, with different mutations affecting migration patterns and survival. The research provides insights into the molecular basis of tumor invasion and metastasis, offering a new perspective for personalized cancer treatment.
Eating ultra-processed foods is associated with slower embryo growth, smaller yolk sacs, and increased subfertility risk. Reducing UPF consumption around conception and pregnancy may improve fertility outcomes for both parents and embryos.
Researchers discovered that cytoplasmic compartmentalization was inherently unstable in large vertebrate embryos, but found strategies to overcome this instability. The timing of cell divisions was precisely matched with the timescale of instability, allowing for robust embryonic organization.
Researchers at ISTA have found that the zebrafish embryo's geometry is essential for its development, guiding cell division and gene activation. The study's findings could improve IVF embryo assessments by understanding how the embryo interprets its geometry.
A new study found that embryo arrest in IVF is more common with advancing maternal age but not directly related to chromosomal abnormalities. The research suggests two independent factors contribute to the number of euploid embryos available for transfer and overall ART success.
Researchers at Terasaki Institute and Caltech will use stem cell-based models to identify factors influencing early human development. The goal is to gain insights into infertility, pregnancy loss, and developmental disorders.
A new imaging technique reveals that chromosomal abnormalities can arise late in human embryo development, potentially affecting placental cells rather than the fetus. This finding challenges current practices of pre-implantation genetic testing for aneuploidy.
Using advanced microscopy and molecular biology, researchers visualized axis reconstruction in sea urchin embryos, tracking cellular movements and gene activation to understand self-organizing ability. This discovery sheds light on the long-standing question of monozygotic twinning emergence from one fertilized egg.
Researchers at Cornell University have discovered genetic triggers that cause male and female bovine embryos to develop differently. Male embryos prioritize genes associated with energy metabolism, leading to faster growth, while female embryos emphasize genes related to sex differentiation and inflammatory pathways.
A recent study found that women with polycystic ovary syndrome (PCOS) have embryos carrying a unique 'epigenetic memory' that could explain why the condition often runs in families. Treating affected embryos with certain inhibitors showed promise in restoring normal gene activity, suggesting a potential therapeutic avenue.
Researchers developed an automated sorting system to isolate individual gastruloids, enabling studies of embryonic development and genetic diseases. The system uses a claw-like mechanism to sort microrafts with cells, facilitating large-scale screening and analysis.
Three Israeli scientists will each receive US$100,000 for their innovative work in Life Sciences, Chemical Sciences, and Physical Sciences & Engineering. The Blavatnik Awards recognize outstanding young scientists at the early stages of their careers.
Researchers at CRCHUM used single-cell RNA sequencing to study guinea pig pre-implantation development, finding striking similarities with early human embryogenesis. The discovery opens new possibilities for understanding women's infertility and developing therapeutics for healthy pregnancy.
Researchers at UC Santa Cruz engineered cellular models of embryos using CRISPR technology, allowing them to study early developmental stages without experimenting with actual embryos. The team found that 80% of stem cells organized into embryo-like structures, showcasing a remarkable collective behavior and molecular composition.
Researchers have discovered that the earliest days of embryo development impact a person's future health and aging. Cellular processes within the egg at fertilization determine telomere length in offspring, increasing lifetime risk of chronic diseases.
A new study by the University of Plymouth investigated the effect of changing global climate conditions on Christmas Island's red crab embryos. The researchers found that lower salinity levels did not delay embryonic development, but emphasized the need for further research to understand the species' response to environmental stressors.
Researchers at the University of Montreal Hospital Research Centre discovered that sister cells in mouse embryos can communicate through a stable cytoplasmic bridge, leading to coordinated cell death. This mechanism may help eliminate defective or unneeded cells, improving fertility and developmental processes.
Riley Galton, a postdoctoral researcher at the Stowers Institute, has been awarded the HHMI Hanna H. Gray Fellowship to study embryonic diapause in vertebrates. Her research focuses on understanding how genetic adaptations enable organisms to 'pause' their development in response to environmental changes.
Scientists develop innovative method to break the shell barrier, enabling real-time observation of embryonic development. By utilizing a rotary shaker, they prevent yolk membrane drying, improving survival rates and successful hatching.
A research team has successfully recreated wrinkle structures in biological tissue in vitro, revealing the mechanisms behind their formation. The study found that compressive forces and dehydration play a crucial role in wrinkle formation, mirroring aging skin effects.
Researchers at RIKEN Center for Biosystems Dynamics found multiple specialized types of DNA replication in early-stage embryos, including a period of instability prone to chromosomal copying errors. This discovery could lead to improved methods of in vitro fertilization (IVF) and better strategies for minimizing chromosomal abnormalities.
A new study has found that women with a family history of endocrine diseases, including type 2 diabetes and polycystic ovary syndrome, are at a higher risk of experiencing pregnancy loss. The study, which examined over 366,000 women in Denmark, found a significant association between endocrine disease and pregnancy loss.
Scientists used new techniques to analyze gene activities during mouse prenatal development, revealing hundreds of cell types and their formation. The study showed that massive transcriptional changes occur at birth, potentially necessary for survival outside the womb.
Researchers analyze fertilized ascidian oocytes to understand the mechanism driving cytoplasmic reorganization and cell shape changes. Friction forces between cellular components, such as actomyosin cortex and myoplasm, are found to be pivotal in determining organismal shape.
A Mediterranean diet has been found to be a straightforward and effective approach for improving IVF success rates, with high intakes of fruits, vegetables, whole grains, and omega-3 fatty acids. The diet's benefits were seen in both embryo development and pregnancy outcomes, even after just six weeks of implementation.
Researchers have identified specific progenitor cells in mouse embryos that differentiate into left ventricle cardiomyocytes, highlighting the complexity of early heart formation. The discovery provides insights into congenital heart disease mechanisms and may lead to improved treatments for left ventricle-related issues.
Researchers from the Wellcome Sanger Institute mapped the multiple organ functions of the human yolk sac, revealing its role in producing key hormones and blood cells. The study provides novel insights into the earliest stages of immune cell development and has implications for understanding childhood diseases.
A new AI tool can identify sperm in severely infertile men in seconds, compared to the hours it takes scientists. The algorithm improves antiquated approaches and increases the chance of a couple conceiving their own biological children while reducing stress on sperm and increasing efficiency.
Researchers have discovered that gene editing technologies may introduce unintended mutations and damage to DNA in early human embryos. The study found that most cells repair breaks in the DNA using non-homologous end joining, which can lead to additional genetic abnormalities.
A large randomized clinical trial found that culturing embryos for three days versus five days in the lab has no significant impact on live birth rates. Women's age affects outcomes, with younger women aged under 36 experiencing better results from cleavage-stage transfers.
Scientists have defined a basic toolkit for forming tubular organs in animals, which is thought to be the foundation of organ development in vertebrates. The study uses the sea star as a model organism and reveals that cells can proliferate and migrate simultaneously during tube formation.
Researchers at UNSW Sydney have successfully induced a gastrulation-like event in human pluripotent stem cells, mimicking the early stages of embryonic development. This breakthrough could lead to new approaches for studying human development and creating personalized body tissue or organs using hydrogel materials.
Researchers at the University of Cambridge have successfully grown a model embryo with a brain, beating heart, and all other organs using mouse stem cells. This breakthrough could help understand why some pregnancies fail and develop a new approach for repairing synthetic human organs.
Researchers at Columbia University Irving Medical Center discovered that most IVF embryo failures are due to spontaneous errors in DNA replication during cell division. These errors can cause chromosomal abnormalities, leading to the failure of embryos to develop, a common obstacle in fertility treatments.
Researchers at CRCHUM discover that cell division in mouse embryos occurs asymmetrically, with cytokinesis primarily pinched from one side. This finding challenges traditional textbook views of cell division and may have implications for embryo viability and human fertility.
Researchers at University College London discovered that embryonic cells can navigate towards harder regions using chemical and mechanical signals, guiding the formation of facial features. This breakthrough could help prevent birth defects and infant mortality by improving understanding of cell migration mechanisms.
A study published in Developmental Cell reveals that lagging chromosomes contribute to an uneven chromosomal distribution, leading to aneuploidy and infertility. Researchers propose artificially slowing down cell division to limit aneuploidy, offering a potential solution for improving egg quality in older patients.
A new ultrasonic method improves fetal weight prediction accuracy by analyzing three-dimensional limb volumes and abdominal circumferences. The algorithm outperforms traditional formulas in predicting macrosomia and birth weights.
Marnie Halpern has made significant contributions to understanding the patterning of the nervous system using novel genetic approaches. Her research focuses on regional specializations within the neural tube, with a particular emphasis on brain asymmetry.
Christoph Lepper, a Carnegie staff associate, received the NIH Director's Early Independence Award for his groundbreaking research on skeletal muscle biology. The award aims to launch talented young scientists into independent positions directly out of graduate school.
Women with severe obesity may receive assisted reproduction treatment if they can achieve significant weight loss. Smoking is also a concern, as it reduces fertility and increases the risk of miscarriage. The ESHRE Task Force on Ethics and Law suggests balancing patient autonomy with societal responsibilities and future child safety.
Christopher B. Field, director of Carnegie's Department of Global Ecology, and Douglas E. Koshland, staff scientist at the Department of Embryology, have been elected as AAAS Fellows. They received this honor for advancing science or its applications through their work on global ecology and cell biology.
Allan Spradling receives the 2008 Gruber Genetics Prize for groundbreaking discoveries about stem cell development in Drosophila melanogaster. His work has significantly contributed to understanding human genetics, development, and disease.
The European Society of Human Reproduction and Embryology (ESHRE) has reaffirmed its ban on human reproductive cloning due to significant practical and ethical risks. The organization believes that the generation of clones could infringe upon human dignity, increase genetic determinism, and restrict autonomy.
A recent study published by the European Society of Human Reproduction and Embryology found that women who smoke more than 10 cigarettes a day have a significantly lower chance of IVF success. The implantation rate for non-smokers was 22.7%, compared to 15.1% for women smoking over 10 cigarettes a day.
Couples undergoing infertility treatment experience intense emotional highs and lows, with physical discomfort being a secondary issue. The promise of technology to control reproduction only exacerbates the problem, leading to increased distress for those who fail to conceive.
The European Society of Human Reproduction & Embryology conference in Bologna, Italy, presented groundbreaking research on preimplantation diagnosis, cancer risk factors, and assisted reproductive techniques. The event also explored new technologies, such as keyhole surgery and laser-assisted IVF.