Articles tagged with Embryos
Researchers at Cincinnati Children's Hospital Medical Center found that the size and patterning accuracy of an embryo depend on the amount of reproductive resources invested in by mothers before eggs leave the ovary. The study used fruit flies to develop a mathematical model, TEMS, which links core pieces of the developmental picture. ...
Researchers have discovered that a specific set of molecules, known as transcription factors, trigger DNA errors and slow down cell division in embryos. This finding provides new insight into the mechanism behind the 'midblastula transition', where the embryo takes control of its genetic expression.
French scientists have discovered that vertebrate formation is guided by a pattern present from early development stages, with folds along boundaries of elastic contrast forming the final shape. This finding explains how complex structures like vertebrates emerged during evolution.
A recent study revealed that surrogate mothers in Indian fertility clinics lack knowledge about embryo transfer risks, while doctors make unilateral decisions. The existing laws need stricter regulation to ensure rights of all parties are protected.
Researchers used a new whole-genome sequencing method to detect potential disease-causing mutations in human IVF embryos, detecting 82% of single base de novo mutations. The technique, which uses DNA barcodes and advanced sequencing technology, can help identify the cause of congenital disorders such as intellectual disability and autism.
Researchers at the University of Manchester have identified a possible cause of IVF failure in some women, which may be treated with therapies targeting microRNA-145 and its effects on IGF1R. The study's findings suggest that manipulating this biological process could lead to improved rates of embryo attachment during implantation.
A recent study by MSU-led researchers found that oxygen-depleted dead zones between dams in the upper Missouri River are directly linked to the failure of endangered pallid sturgeon hatched embryos to survive to adulthood. This is a major breakthrough in understanding the decline of this species, which can live up to 100 years.
The study reveals that dam-induced changes in riverine sediment transport lead to reduced oxygen levels, causing hatched pallid sturgeon embryos to die. The research provides vital information for pallid sturgeon conservation and is a significant breakthrough in understanding the species' decline.
Children born after IVF have fewer preterm births, low birth weight issues, and stillbirths. The study found that transferring only one embryo per cycle improves single baby health.
Researchers at the University of Kent have identified karyomapping as a viable and cost-effective method for detecting genetic diseases in IVF embryos. This technique simultaneously detects chromosomal disorders with monogenic disorders, potentially reducing the need for individualized tests.
New research reveals distinct differences in early human embryo development among overweight and obese women compared to those of a healthy weight. These differences may have long-term health implications for their children.
Researchers at San Francisco State University found that embryonic cells receive distinct epigenetic marks from parents, influencing development and behavior. The study identifies unique histone marks in sperm and embryos, potentially aiding proper cell division and human function.
A study by the Stowers Institute for Medical Research reveals that the sea lamprey, a jawless vertebrate, exhibits a pattern of gene expression reminiscent of its jawed cousins, indicating that the genetic program used by jawed vertebrates was up and running ages before they possessed recognizable faces. This finding suggests that regu...
A new study suggests that using computer-automated, time-lapse embryo photography during in-vitro fertilization can improve embryo selection, leading to a higher chance of pregnancy. The technology allowed researchers to assess embryo development and predict which embryos were more likely to become viable blastocysts.
Research reveals that lipid droplets play a crucial role in regulating histone proteins in fruit fly embryos, helping to maintain the 'perfect' balance required for development. The findings suggest that manipulating this process could potentially treat diseases linked to chromosome malfunction.
A new study using next-generation DNA sequencing shows that it can accurately screen embryos for genetic disease prior to implantation, improving outcomes in IVF treatments. The technique has been shown to be effective, reliable and cost-efficient, resulting in more ongoing pregnancies.
Research finds that fertility treatments increase the risk of multiple births and prematurity, leading to health complications and significant healthcare costs. Experts propose six policy changes to mitigate these risks, including expanding insurance coverage for IVF and improving doctor-patient communication.
Researchers at the University of Missouri have found fossilized embryos from the Cambrian Period, which provide clues to the origins and developmental biology of early animals. The discovery includes over 140 spherically shaped fossils, some featuring features reminiscent of division stage embryos.
A new fossil specimen of the ancient Mesozoic marine reptile Chaohusaurus has revealed evidence of a live birth, suggesting that live births in land reptiles may have appeared much earlier than previously thought. The discovery provides the oldest vertebrate fossil to capture the moment of live-birth.
A novel simplified IVF procedure has been shown to achieve similar fertilization and implantation rates as conventional methods, enabling more affordable access to IVF for a larger global population. The study results in 16 successful live births using the new method, with potential to reduce laboratory costs.
Researchers achieved precise gene modification in monkeys using CRISPR/Cas9 system, enabling simultaneous disruption of two target genes without off-target mutations. This breakthrough generates invaluable human disease models, advancing therapeutic strategies in biomedical research.
A comprehensive study of over 300,000 births in South Australia found that babies conceived through assisted reproductive therapies had a higher risk of stillbirth, preterm birth, low birth weight, and neonatal death compared to naturally conceived babies. The risks varied depending on the type of assisted conception used.
A University of Iowa researcher found a 'Goldilocks' effect in snail populations, where certain boundaries restrict growth and reproduction. This discovery may one day aid in controlling the spread of invasive species.
Belgium's policy of limiting embryo transfers with six ART cycles reimbursement shows no negative impact on pregnancy and delivery rates, while reducing multiple births. This 'Belgian model' can be considered by governments worldwide to achieve a 50% reduction in MPR and public health costs.
Researchers found a new mechanism regulating the earliest stages of embryo development, where arm-like structures called filopodia control cell shape and compaction. The discovery could help improve IVF treatment outcomes by identifying suitable embryos for implantation.
A CNIO team has discovered that senescence, which makes cells stop dividing, also takes place during embryo development to eliminate unnecessary cells. This process, known as programmed senescence, helps shape the body's tissues and organs.
Researchers discovered that the Lin28a protein enhances tissue repair in adult mice, promoting hair regrowth and repairing damaged ears and digits. This finding opens up potential treatments for adults using drugs to boost wound healing and cellular metabolism.
Researchers at IRB Barcelona have identified a crucial protein called dBigH1 that regulates zygotic genome activation in the fly Drosophila. This discovery has significant implications for understanding embryonic development and potential connections to infertility, gestational disorders, or early miscarriage.
Researchers at Helmholtz Centre for Environmental Research discovered a protein called Abcb4 in zebrafish embryos that transports and expels toxic chemicals, protecting the embryo. However, certain environmental chemicals render this protective mechanism ineffective, making fish embryos more sensitive to toxic substances.
Scientists at EMBL discovered that endocytosis drives changes in cell shape by remodelling the cell membrane. Cells adapt their feeding strategy to suck in long tubes of membrane, processing them into smaller vesicles.
Researchers discover cell competition in early embryo, where cells with higher Myc protein levels eliminate those with lower levels. This mechanism optimizes the development of long-lived organisms like humans by selecting suitable cells.
In early mammalian development, embryonic cells undergo a battle for survival between days 3 and 7. Cells with higher levels of Myc protein eliminate those with lower levels through an optimization mechanism. This study reveals that this process does not waste cellular resources but instead benefits the embryo.
A study in Belgium demonstrates that simplified IVF methodology can be successful and cost-effective, with estimated costs as low as €200 per cycle. The research aims to make infertility care universally accessible to couples in developing countries.
A new genome sequencing technique has been used to select embryos for IVF, resulting in the first birth following embryo screening. The 'next generation sequencing' method reveals information on genetic disorders and chromosomal abnormalities, increasing the chances of successful pregnancies.
A recent study published in Reproductive BioMedicine Online examines the outcomes of assisted reproduction treatment for same-sex male couples and single men. The research found that high success rates can be achieved, particularly among persistent individuals, with most men successful in realizing their dream of fatherhood.
Researchers used X-ray diffraction to image soft tissues in living frog embryos, resolving individual cells and analyzing single-cell migration. The technique provides new insights into embryonic development and its underlying molecular biology.
Scientists used a new X-ray method to study African clawed frog embryos, providing detailed insights into embryonic development and cell movement. The results revealed new morphological structures and clarified the process of fluid redistribution in the embryo.
Scientists observed orderly movements of protein-carrying packets along axons to specific synapse sites, revealing a complex process. The discovery sheds light on the formation of glutamate-driven synapses and their role in conditions like autism and schizophrenia.
Researchers from the University of Bonn have found the oldest known dinosaur embryos in China, shedding light on the rapid growth and high reproductive rate of these ancient animals. The discoveries provide valuable insights into the biology of dinosaurs, including their development and behavior.
Researchers visualize retinoic acid distribution for the first time in a live zebrafish embryo, observing two opposing concentration gradients along the head-to-tail axis. This discovery confirms retinoic acid as a morphogen, essential for understanding tissue development and regenerative medicine.
Researchers used a fly model to study wound healing, discovering eight new genes involved in the process. The study reveals that wound healing is fine-tuned and requires a balance of gene activation and inhibition to prevent complications such as ulcers or thickened cuticles.
A study found that perinatal outcomes of frozen/thawed embryo replacement (FER) were better than those of fresh in vitro fertilization (IVF), but poorer than the general population. FER resulted in higher rates of low birth weight, preterm birth, and macrosomia compared to spontaneous conceptions.
A new CU-Boulder-led study reveals that plants can exhibit altruistic behavior, prioritizing the growth and well-being of their closely related offspring. The research found that endosperm in seeds sharing the same mother and father grew more heavily than those with genetically different parents.
Researchers discovered that embryo growth is controlled by oscillating gene expression in neighboring cells, resulting in well-proportioned animals. The speed of this wave determines the size of future vertebrae, with faster waves indicating larger vertebrae.
A study by Jana Beckelmann found that female horse embryos produce more insulin-like growth factor-1 (IGF1) than male embryos, which may help explain the uneven sex ratio of equine births. This discovery sheds light on a previously unknown mechanism driving sexual dimorphism in horses.
A recent study found that exercise in horses reduced embryo recovery rates and quality, potentially impacting early embryonic development. The research also suggests a possible link between intense exercise and detrimental effects on female reproductive blood flow, highlighting the need for further studies.
Researchers can now navigate biological tissues from whole embryo to subcellular structures thanks to virtual nanoscopy and enhanced JCB DataViewer. The technique allows for exceptional opportunities for future discoveries by integrating information across cells and tissues.
A meta-analysis suggests that freezing all embryos for later transfer in a non-stimulated cycle may improve implantation and pregnancy rates, reducing the risk of ovarian hyperstimulation syndrome (OHSS) associated with fresh embryo transfers. The study found a relative risk of 1.31 for clinical pregnancies, with higher ongoing pregnan...
A policy of single embryo transfer (SET) has been associated with a reduction in overall perinatal mortality for IVF and ICSI babies. SET has also been linked to lower risks of preterm birth and low birth weight, as well as sequelae such as prematurity and neonatal complications.
A study by Harvard School of Public Health found that women with higher intakes of dietary saturated fats have fewer mature oocytes available for collection in IVF, leading to lower live birth rates. On the other hand, polyunsaturated fat consumption is inversely related to embryo quality.
A new study presents the largest number of preimplantation genetic diagnosis (PGD) treatments for BRCA1/2 in Europe, with a significant proportion of successful pregnancies. The results suggest that PGD offers an established option for couples seeking to avoid inherited BRCA mutations.
Advanced time-lapse imaging techniques show promise for increasing IVF success rates by selecting high-quality single embryos for transfer. Reliable assessment of embryonic quality could reduce emotional costs and improve procedure efficiency.
The new Multi-View SPIM microscope allows scientists to image rapid biological processes in thick samples at high resolution. It can record the movements of every nucleus in the embryo throughout its life, providing valuable insights into embryonic development.
Researchers discovered that embryo brains exhibit waking-like activity up to 20% into the final stage of embryonic life, followed by emergence of sleep patterns. This finding may have significant implications for understanding complex fetal learning and developmental consequences in premature infants.
Researchers discovered that low adrenomedullin levels may contribute to slower muscle contractions and ciliary beating, favoring embryo retention in the oviduct. Administering adrenomedullin reversed this effect, suggesting it could be a useful predictor for tubal ectopic pregnancy.
Researchers shed light on how physical traits are arranged in body plans by studying fruit fly Drosophila. They found that a single gradient of proteins is not sufficient to form the same body plan in each member of a species, but multiple gradients working against each other create a robust system for normal development.
Research found that zebrafish exposed to BPA as embryos had significant behavioral changes, including learning and memory problems. The study suggests that even low levels of BPA can have long-lasting effects on cognitive function.
Researchers found that cell-to-cell communication across the gut endoderm epithelium is crucial for propagating left-right patterning information. Mouse embryos lacking a specific gene exhibit defects in gut formation and fail to establish left-right asymmetry.
Scientists study the impact of asymmetrical light input on cerebral hemispheric specialization and interhemispheric cooperation in bird embryos. The results show that information exchange is impaired without light-stimulation, which may help understand developmental disorders like ADHD or autism.
Scientists have discovered that coral offspring can break up into smaller, genetically identical individuals, called 'clones', which then settle and develop into adult corals. This unique reproductive strategy allows corals to maximize their chances of finding suitable habitats.