Tag Archives: sperm

Researchers reveal why heat stress damages sperm

University of Oregon biologists have used the model organism Caenorhabditis elegans to identify molecular mechanisms that produce DNA damage in sperm and contribute to male infertility following exposure to heat. In humans, the optimal temperature for sperm production is just … Continue reading

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Delivering proteins to testes could treat male infertility

Problems with sperm development are often to blame for male infertility. Recently, researchers reported in ACS Nano a way to deliver a protein important for sperm cell production directly to mouse testicles, where it restored normal sperm development and allowed previously infertile … Continue reading

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Research identifies sperm biomarker associated with couples’ pregnancy probability

Researchers at the University of Massachusetts Amherst have identified a single-measure biomarker in sperm mitochondrial DNA that may predict male reproductive health and pregnancy success. The discovery applies not just to couples seeking care for infertility but also for the … Continue reading

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Sperm quality lowered by light from devices at night

Men might want to think twice before reaching for their smartphone at night. A new study found correlations between electronic media use at night and poor sperm quality. Preliminary results show that greater self-reported exposure to light-emitting media devices in … Continue reading

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Lab-grown sperm could let infertile men have children

Infertility affects one in seven men of reproductive age worldwide. One idea for treating male sterility is spermatogonial stem cell (SSC) therapy. In this approach, sperm stem cells in the testis are transferred to a test tube, cultured and nudged … Continue reading

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How sperm really swim: New research challenges centuries-old assumption

A breakthrough in fertility science by researchers from England and Mexico has shattered the universally accepted view of how sperm “swim.” More than three hundred years after Antonie van Leeuwenhoek used one of the earliest microscopes to describe human sperm … Continue reading

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New test offers clarity for couples struggling to conceive

Infertility affects 10% to 15% of couples globally, and while often viewed as a women’s health problem, men contribute to around half of the cases. Now, a male fertility test based on Cornell University research could help predict which men … Continue reading

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New sperm selection technology may increase IVF success rates

Motile sperm are difficult to collect with a conventional cell sorter because they are vulnerable to physical damage. A research collaboration between Kumamoto and Kyoto Universities in Japan has developed a technique that uses a cell sorter with microfluidic chip … Continue reading

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Study finds protein that is essential for male fertility

Newly produced spermatozoa within the testis are not fully functional until they mature in the epididymis, a duct that helps to transport and store sperm. Male infertility may arise from lack of communication between the testis and the epididymis and … 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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