Spay, neuter, or shot? How an injection could be the future of animal control
A single shot into the muscle is enough to stop egg and sperm production in mice, report California Institute of Technology scientists on October 5 in Current Biology. The injection delivers packaged...
View ArticleProteins better known as visual sensors play a role in the heat-seeking...
In their arduous journey to the egg, sperm 'feel' the heat of the fallopian tube and 'taste' the chemical signals of the ova. But a new Weizmann Institute study published in Scientific Reports shows...
View ArticleShared genetics in humans and roundworms shed light on infertility, study finds
A discovery by Rutgers scientists links a protein in sperm to the same molecule needed for reproduction in tiny roundworms and provides clues to human infertility.
View ArticleUnless they crane their necks all sperm would only turn left
Spermatozoa need to crane their necks to turn right to counteract a left-turning drive caused by the rotation of their tails, new research has found.
View ArticleStem cell technique makes sperm in a dish
Scientists in China have finally succeeded in creating functioning sperm from mice in the laboratory. To accomplish this feat, the researchers coaxed mouse embryonic stem cells to turn into functional...
View ArticleScientists record how starfish egg cells eliminate crucial structures to...
EMBL scientists have observed how an egg cell gets rid of its centrioles - structures that play a crucial role in cell division - to ensure the proper development of the embryo. The study, published...
View ArticleBiosensor measures signaling molecules within cilia
Scientists of the Research Center caesar in Bonn, an Institute of the Max Planck Society, developed a new biosensor, which allows to measure nanomolar levels of the second messenger cAMP. The sensor...
View ArticleScientists discover new way of testing reproductive compatibility
Scientists from The University of Western Australia have discovered a new way of measuring the effectiveness of different sperm competing to fertilise eggs in blue mussels.
View ArticleEnsuring the integrity of our genetic material during reproduction
The genetic information we receive from our parents in the form of chromosomes are mosaics assembled from the two copies of chromosomes each parent has. How such cuts—or breaks—in our genetic material...
View ArticleCell fusion discovery could improve agricultural production
An international research team has observed cell fusion in flowering plants for the first time in more than a century. The discovery demystifies how plants prevent the attraction of excessive pollen...
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.
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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 ArticleProspective 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 Article
