News tagged with sperm morphology
High levels of cycling training damage triathletes' sperm
The high-intensity training undertaken by triathletes has a significant impact on the quality of their sperm, the 25th annual conference of the European Society of Human Reproduction and Embryology heard today (Monday 29 ...
Jun 29, 2009 |
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Study of diving beetles suggest sperm evolution may be driven by changes in female reproductive organs
Studying female reproductive tracts and sperm in diving beetles (Dytiscidae), researchers from the University of Arizona and Syracuse University have obtained a glimpse into a bizarre and amazing world of spe ...
Feb 06, 2012 |
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Scientists replicate key evolutionary step in life on earth
(PhysOrg.com) -- More than 500 million years ago, single-celled organisms on Earth's surface began forming multi-cellular clusters that ultimately became plants and animals.
Jan 16, 2012 |
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The long and short of sperm tails
A team of biologists in Japan has uncovered an unexpected role for mitochondria1, the power houses of cells, in the development of sperm in the fruit fly Drosophila melanogaster.
Aug 05, 2011 |
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Researchers uncover new role for mitochondria during RNA processing
Michael Frohman, M.D., Ph.D., Chair of the Department of Pharmacological Sciences at Stony Brook University School of Medicine, and colleagues, have discovered a new role for mitochondria during ribonucleic acid (RNA) processing. ...
Mar 16, 2011 |
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Sperm quality and counts worsening in Finland
A new study published in the International Journal of Andrology reveals that semen quality has significantly deteriorated during the last ten years in Finland, a country that previously was a region with high sperm counts ...
Mar 03, 2011 |
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Exposure to BPA associated with reduced semen quality
Increasing urine BPA (Bisphenol-A) level was significantly associated with decreased sperm concentration, decreased total sperm count, decreased sperm vitality and decreased sperm motility, according to a Kaiser Permanente ...
Oct 28, 2010 |
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Hope for men with nonobstructive infertility
It has been thought that men with non-obstructive azoospermia (NOA), a lack of sperm in the semen not caused by an obstruction within the reproductive system, are poor candidates for IVF. Now, researchers writing in the open ...
Medicine & Health / Medical research
Dec 03, 2009 |
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Classifying molar pregnancy
Researchers from The Johns Hopkins Medical Institutions have used short tandem repeat (STR) genotyping and p57 immunohistochemistry to distinguish hydatidiform moles. The related report by Murphy et al "Molecular Genotyping ...
Medicine & Health / Medical research
Oct 21, 2009 |
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Molecular Decay of Enamel-Specific Gene in Toothless Mammals Supports Theory of Evolution
(PhysOrg.com) -- Biologists at the University of California, Riverside report new evidence for evolutionary change recorded in both the fossil record and the genomes (or genetic blueprints) of living organisms, ...
Sep 04, 2009 |
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Semen quality depends upon antioxidants
A possible relationship between men's diets and the quality of their semen has long been a discussion point. Spanish researchers have now confirmed that antioxidants, molecules which are found mainly in fruit and vegetables ...
Jun 02, 2009 |
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List of search results for sperm morphology
