Each cell contains a set of instructions in its DNA that determines which genes are expressed and which are silenced. The correct programming of these so-called epigenetic programs, including DNA methylation, is essential ...
Jun 11, 2024
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The widely held view that sperm counts in men are dropping around the world may be wrong, according to a new study by University of Manchester, Queen's University in Kingston, Canada and Cryos International, Denmark.
Jun 5, 2024
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Researchers at the University of São Paulo (USP) in Brazil have shown for the first time that SARS-CoV-2, the virus that causes COVID-19, can remain in the sperm of patients for up to 90 days after hospital discharge and ...
Jun 4, 2024
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A novel male contraceptive gel combining two hormones, segesterone acetate (named Nestorone) and testosterone, suppresses sperm production faster than similar experimental hormone-based methods for male birth control, according ...
Jun 2, 2024
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University of New Mexico researchers have detected significant concentrations of microplastics in the testicular tissue of both humans and dogs, adding to growing concern about their possible effect on human reproductive ...
May 15, 2024
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Matthew Treviño and Emily Fletcher are self-described DINKWADs—double income, no kids, with a dog. The Sacramento couple, who met and work at UC Davis, are as committed to each other as they are to not having children, ...
Mar 9, 2024
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New research from Oregon Health & Science University describes the science behind a promising technique to treat infertility by turning a skin cell into an egg that is capable of producing viable embryos.
Mar 8, 2024
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A novel screening system developed at Kyoto University enables researchers to investigate sperm cell development and health at the molecular level.
Mar 5, 2024
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Early in the development of sperm, a strange event happens: the X and Y chromosomes condense into tight packages and are sequestered away from the other 44 human chromosomes. If any part of this process goes awry, the cells ...
Feb 22, 2024
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Physician-researcher Joyce Asseler and gynecologist Norah van Mello examined the ovarian tissue of transgender people who had their ovaries removed as part of their gender-affirming treatment. They had all used testosterone ...
Feb 22, 2024
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