Tag Archives: egg

Study: Sperm switch swimming patterns to locate egg

A new study from Cornell University 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. … Continue reading

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Sperm help ‘persuade’ female to accept pregnancy

Sperm are generally viewed as having just one action in reproduction – to fertilize the female’s egg – but studies at the University of Adelaide in Australia are overturning that view. Published in Communications Biology, new research shows that sperm … Continue reading

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Women’s egg quality dependent on metabolic factors

Increasing the levels of a chemical found in all human cells could boost a woman’s fertility and help select the best eggs for IVF, according to University of Queensland, Australia, research. In an in-depth study of the final steps of … Continue reading

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Studies look into how DNA crossovers can drive healthy or abnormal sperm, egg cell division

In the famous words of movie character Forrest Gump, “Life is like a box of chocolates; you never know what you’re gonna get.” The same principle applies to human genetics. When the body forms sperm or egg cells in a … Continue reading

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New discovery shows how men may contribute to infertility

A new study at the University of Toledo shows that a father donates not one, but two centrioles through the sperm during fertilization, and the newly discovered sperm structure may contribute to infertility, miscarriages and birth defects. The centriole is … Continue reading

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New research extends egg health

Women have been told for years that if they don’t have children before their mid-30s, they may not be able to. But a new study from Princeton University has identified a drug that extends egg viability in worms, even when … Continue reading

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Why does fertility decline with age?

Yale School of Medicine researchers have identified the molecular pathways involved in the aging of human eggs. This research not only explains why egg quality —and thereby fertility—sharply declines with age, but could eventually lead to treatments to correct age-related … Continue reading

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Conception question answered

How exactly do sperm and egg come together to make a baby? It’s a question that has been plaguing scientists for years, and researchers at Britain’s Wellcome Trust Sanger Institute say they have the answer. Their research on mice has … Continue reading

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