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UrduDiscovering that hepatitis E virus is associated with sperm in pigs suggests the virus may be both sexually transmitted and linked to male infertility, according to a new study.
Tag: Sperm
NIH awards $3.4M to Wayne State University to investigate biomarkers for better reproductive success
A new $3.4 million award to the Wayne State University School of Medicine from the National Institutes of Health aims to overcome the limitations of conventional semen analyses by examining mitochondrial DNA levels in sperm as a novel biomarker of sperm fitness.
Male fertility gene discovery reveals path to success for sperm
The discovery of a pair of genes that work in perfect harmony to protect male fertility, could provide new insights into some unexplained cases of the most severe form of infertility, research suggests.
Possible cause of male infertility
Mature spermatozoa are characterized by an head, midpiece and a long tail for locomotion. Now, researchers from the University Hospital Bonn (UKB) and the Transdisciplinary Research Unit “Life & Health” at the University of Bonn have found that a loss of the structural protein ACTL7B blocks spermatogenesis in male mice.
Sperm swimming is caused by the same patterns that are believed to dictate zebra stripes
Patterns of chemical interactions are thought to create patterns in nature such as stripes and spots. This new study shows that the mathematical basis of these patterns also governs how sperm tail moves.
Teams of sperm swim more smoothly against the current
Scientists find three biological benefits to group swimming of sperm when navigating the female reproductive tract that may also inform studies on infertility.
New measure of sperm age may be predictor of pregnancy success
A novel technique to measure the age of male sperm has the potential to predict the success and time it takes to become pregnant, according to a newly published study by researchers at the Wayne State University School of Medicine.
Sperm switch swimming patterns to locate egg
A new study reveals how sperm change their swimming patterns to navigate to the egg, shifting from a symmetrical motion that moves the sperm in a straight path to an asymmetrical one that promotes more circular swimming.
NIH-funded research to address rising male infertility
Male infertility is on the rise, with significant declines in sperm quantity and quality occurring across the human population worldwide in the past two decades. The reason for this is poorly understood, but scientists suspect spermatogenesis – the process by which sperm develops – is a crucial piece in this puzzle.
Human Sperm Mutations that can Cause Disease in Children Identified
UC San Diego researchers have described a new method for observing and counting mutations in sperm, and how to use this data to predict the likely impact of these mutations on future children.
Health Disparities and COVID-19, Toxicity of E-cigarette Generated Aerosols, and More Featured in February 2021 Toxicological Sciences
Toxicological Sciences continues to feature leading toxicology research in the areas of developmental and reproductive toxicology; endocrine toxicology; neurotoxicology; molecular, biochemical, and systems toxicology; and more.
How to Find Mutated Sperm? Just Go FISH
A test developed by Berkeley Lab scientists can quickly and easily detect whether sperm cells are carrying chromosomal defects, an advance that will help men who have undergone cancer treatment father healthy children.
High-fat Diet in Childhood May Affect Sperm Later in Life
New research in mice suggests that a high-fat diet early in life may impair male fertility in adulthood. The first-of-its-kind study is published ahead of print in the American Journal of Physiology-Endocrinology and Metabolism.
How human sperm really swim: New research challenges centuries-old assumption
A breakthrough in fertility science by researchers from Bristol and Mexico has shattered the universally accepted view of how sperm ‘swim’.
Why Do So Many Pregnancies and In Vitro Fertilization Attempts Fail?
Scientists have created a mathematical model that can help explain why so many pregnancies and in vitro fertilization attempts fail. The Rutgers-led study, which may help to improve fertility, is published in the journal Proceedings of the National Academy of Sciences.
Fertilization discovery reveals new role for the egg, could lead to new male contraceptive
An unexpected discovery about fertilization reveals new insights on how sperm and egg fuse and could have major implications for couples battling infertility – and may lead to a future male contraceptive.