Prospective birth control pill for men has its origin in an arrow poison
Women have many options for oral contraceptives that are safe, effective and reversible, but despite decades of research, men have none. Now, scientists report a rat study in ACS' Journal of Medicinal...
View ArticleA possible explanation for how germlines are rejuvenated
(Phys.org)—A pair of researchers affiliated with the University of California and Calico Life Sciences, has discovered a possible explanation regarding how human germlines are rejuvenated. In their...
View ArticleResearcher finds that when sperm compete, eggs have a choice
The delicately mannered dance between discerning eggs and vying sperm is more complicated than scientists once believed, and it may hold secrets about the evolution of new species.
View ArticleAdvance achieved in dry preservation of mammalian sperm cells
In a paper forthcoming in the November issue of the journal Theriogenology, a team of researchers from the University of North Carolina at Charlotte and the Smithsonian Conservation Biology Institute,...
View ArticleNew research on sperm stem cells has implications for male infertility and...
New research from scientists at Huntsman Cancer Institute (HCI) at the University of Utah and collaborators at University of Utah Health (U of U Health) sheds light on the complex process that occurs...
View ArticleNew device reveals spinning head of sperm and gives scientists clearest view...
Scientists have been observing sperm cells since the invention of the optical microscope. But surprisingly little has been known about sperm swimming patterns in 3-D – information that could help and...
View ArticleMale mice found able to bias gender ratios of offspring
An international team of researchers has discovered that contrary to conventional views, a male mammal was found able to exert inadvertent gender bias ratios in his offspring. In their paper published...
View ArticleReceptors for neuron communication in humans vital for reproduction in mosses
Glutamate receptors play a central role in the human nervous system. Scientists estimate 90 percent of the human brain's synapses, or connections between neurons, send signals using glutamate. The role...
View ArticleSingle protein controls genetic network essential for sperm development
Scientists have found a single protein—Ptbp2—controls a network of over 200 genes central to how developing sperm move and communicate. The protein works by regulating how RNA is processed during each...
View ArticleSimilarities in human and pig embryos provide clues to early stages of...
Scientists have shown how the precursors of egg and sperm cells – the cells that are key to the preservation of a species – arise in the early embryo by studying pig embryos alongside human stem cells.
View ArticleDiscovery of parental factors that lead to asymmetric division of the zygote
An international group of plant biologists discovered for the first time on how factors arising from the mother and father in flowering plants cooperate to develop the shape of their child. Until now,...
View ArticleSperm tested as possible candidate for delivering cancer medications in...
(Phys.org)—A team of researchers with the Institute for Integrative Nanosciences in Germany has tested the possibility of using sperm cells to deliver drugs to cancerous tumors in female patients. In...
View ArticleTransport of molecular motors into cilia
Molecular motors produce the force that powers the beat of sperm cell tails to generate movement toward the egg cell for fertilization. New research now shows how the molecular motors that power the...
View ArticleMystery of how sperm swim revealed in mathematical formula
Researchers have developed a mathematical formula based on the rhythmic movement of a sperm's head and tail, which significantly reduces the complexities of understanding and predicting how sperm make...
View ArticleDifferent recombination rates keep highly selfish genes in check
The hamlet fish can be both the father and mother of its offspring – a characteristic that is helping researchers to understand why genes often undergo recombination more readily in one sex.
View ArticlePig gene advance could boost sperm stocks from prized animals
Gene-editing techniques could help to improve stocks of farmed pigs by boosting supplies of sperm from prized sires.
View ArticleBay Area startups developing the high-tech way to make a baby
As Silicon Valley technophiles use devices to collect data on everything from how many calories they burn to their fluctuating stress levels and their posture, a group of entrepreneurs is bringing that...
View ArticleOptimal sperm cell traceable through temperature and caffeine
Scientists from the University of Twente have devised a technique to find the optimal sperm cell. The researchers have demonstrated that a single sperm starts moving its tail faster as the temperature...
View ArticleHow females store sperm: Fertility study in chickens examines fatty acids
The science of breeding chickens has revealed part of the mystery of how certain female animals are able to store sperm long-term. Droplets of fat transferred from female cells to sperm cells may...
View ArticleScientists use skin cells to create human sperm
Scientists in Spain on Wednesday they had created human sperm from skin cells, a medical feat which could eventually lead to a treatment for infertility.
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