Articles tagged with Ova
Research in mice reveals that TAFII105 is a cell-type specific component of the transcription machinery, controlling egg formation and potentially linked to female infertility. The study provides new avenues for understanding the complex transcriptional mechanisms underlying cell-specific gene expression.
Chemist Nicole S. Sampson has made significant breakthroughs in understanding the process of fertilization, discovering that protein fertilin-beta binds to egg protein alpha-6 beta-1 integrin. Her research could lead to new applications for sperm mimics and insights into tissue formation.
Researchers discovered that male fruit flies displace and incapacitate a previous male's sperm to fertilize eggs. The study found that the last fruit fly to mate with the female sires most offspring, and that seminal fluid alone cannot cause displacement of stored sperm.
Researchers found that pig eggs with multiple sperm can develop into healthy embryos with a normal number of chromosomes. The extra set of chromosomes is segregated into a separate cell, which shrivels and dies.
Researchers identify receptor on egg surface that binds to sperm surface protein, offering new avenue for contraception. The target, alpha-6/beta-1 integrin, could be used to deceive an egg into changing its outer coat to keep sperm out.
Biologists have successfully developed a new method for preserving human eggs using a choline-based solution, which allows for higher survival rates compared to traditional methods. The breakthrough could pave the way for easier egg banking at fertility clinics and improve chances of motherhood for women with damaged ovaries.
Human sperm contain receptors for cannabinoids, which can inhibit the acrosome reaction, regulate swimming patterns, and prevent sperm binding to the egg. The study found that marijuana-like compounds can significantly alter these processes, with implications for diagnosis of infertility and understanding human biology.
In a study by Cornell University, male fire-colored beetles (Neopyrochroa flabellata) entice females with a chemical offering containing cantharidin. The female ingests the chemical, which is then transferred to her eggs, protecting them from predators. This unique strategy highlights the resourcefulness of male insects in seeking mates.