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Good news and bad for dad this Father's Day
It was long believed that conception does not involve a meeting of equals. The egg is a relatively large, impressive biological factory compared with the tiny sperm, which delivers to the egg one copy of the father's genes. view more (2009-06-15)
Jumping genes discovery 'challenges current assumptions'
Jumping genes do most of their jumping, not during the development of sperm and egg cells, but during the development of the embryo itself. view more (2009-06-12)
US researchers sound warning note over postponing fatherhood - new findings confirm male fertility declines with age
Further evidence that men's fertility declines with age is reported today (Thursday 6 February) in Human Reproduction[1] - Europe's leading reproductive medicine journal. A study of 97 healthy non-smoking men aged from 22 to 80 has demonstrated that, as they age, men's semen quality declines. There was a continuous reduction in sperm motility... view more... (2003-02-02)
Unique study shows oil, gas seismic work not affecting Gulf sperm whales
Noise can be irritating and possibly harmful for everything from mice to humans - and maybe even 60-foot whales in the Gulf of Mexico. view more (2008-08-22)
Levels of folate in men's diets is linked to chromosomal abnormalities in their sperm
Researchers have found an association between a vitamin found in leafy green vegetables, fruit and pulses and levels of chromosomal abnormalities in men's sperm. Men who consumed high levels of folate (a water-soluble B vitamin that occurs naturally in food) and folic acid (the synthetic form of the vitamin) tended to have lower levels of abnormal... view more... (2008-03-20)
Air dried sperm could allow home storage
Madrid, Spain: A novel method of preserving sperm through air drying is showing initial promise and has the potential to revolutionize sperm storage, allowing men awaiting in vitro fertilization (IVF) to take care of their sperm at home. Dr Daniel Imoedemhe, a consultant in reproductive medicine and endocrinology, working in Saudi Arabia, told the... view more... (2003-06-28)
Minimally invasive treatment improves male fertility
A minimally invasive treatment for a common cause of male infertility can significantly improve a couple's chances for pregnancy, according to a new study published in the August issue of Radiology. view more (2008-07-22)
Sex is thirst-quenching for female beetles
Female beetles mate to quench their thirst according to new research by a University of Exeter biologist. The males of some insect species, including certain types of beetles, moths and crickets, produce unusually large ejaculates, which in some cases can account for around 10% of their body weight. view more (2007-08-29)
Leaves of the khat plant harbour a key to improving men's fertility
A chemical that occurs naturally in the leaves of an African plant could boost men's fertility, researchers told the 20th annual conference of the European Society of Human Reproduction and Embryology on Monday 28 June. Khat (Catha edulis) is a plant that has been cultivated for centuries in East Africa and the Arabian peninsula. Chewing the... view more... (2004-06-28)
Testes to incubate stem cells
Men may cringe at the idea, but sperm-producing stem cells found in testicles could be extracted, grown in the lab, and frozen for future use. view more (2006-04-25)
How sperm crack the whip
Researchers have identified a key component of the mechanism spermatozoa use to abruptly convert their tail motion from a steady swimming undulation to the whip-cracking snap that thrusts them into an egg. view more (2006-02-09)
Sperm stem cells closer to being like embryonic stem cells
New experiments that prevented rat sperm stem cells from changing permanently into sperm have brought researchers one step closer to coaxing such cells to behave like embryonic stem cells, capable of growing into many other types of cells in the body. view more (2005-11-16)
Researchers learn more about genetic mutation linked to autism
University of Iowa researchers have learned more about a genetic mutation that contributes to autism. The mutation occurred in sperm cells of a father, who does not have autism, but passed the condition on to two of his children. view more (2007-05-04)
Fish Blood Preserves Sperm
In the Arctic and Antarctic seas the water gets cold to minus 1.9 C in winter, but somehow some fish live there. These cold-blooded creatures survive in the icy water because the blood in their veins contains antifreeze proteins and glycoproteins. High levels of the antifreeze proteins are found in the blood serum, they are present in cell... view more... (2002-06-04)
EU research suggests that PCBs damage sperm - but finds no dramatic effect on male fertility
Research by an EU-supported international team of scientists has shown that polychlorinated biphenyls (PCBs)[1]-synthetic organic chemicals found widely in the environment and absorbed in the diet - may damage sperm. view more (2005-10-13)
Soy foods are associated with lower sperm concentrations
Men who eat an average of half a serving of soy food a day have lower concentrations of sperm than men who do not eat soy foods, according to research published online in Europe's leading reproductive medicine journal, Human Reproduction, today (Thursday 24 July). The association was particularly marked in men who were overweight or obese, the... view more... (2008-07-24)
Hormone Linked To Obesity Plays Positive Role In Fertility & Possibly Also Male Arousal
Researchers in the University of Warwick's Department of Biological Sciences have found that a hormone associated with obesity is actually also very active in the male genitals where it plays a key role in male fertility and may even influence the erection response in male sexual arousal. The research, published today (Tuesday 6th April 2004) in... view more... (2004-04-06)
Human embryonic stem cells have the potential to develop into eggs and sperm in the laboratory
Scientists in the UK have proved that human embryonic stem cells can develop in the laboratory into the early forms of cells that eventually become eggs or sperm. view more (2005-06-20)
Study Identifies Genetic Fingerprint Of Healthy Sperm
The genetic fingerprinting of sperm cells-detailed in this week's issue of THE LANCET-could be a major step forward in our understanding of male infertility. Around one in six couples experience difficulty in conceiving a child, and male fertility problems account for half of assisted reproductive techniques. However, the underlying cause of... view more... (2002-09-04)
Just Look At Spermatozoid Critically
In vitro fertilisation is one of the methods for overcoming infertility. This procedure is rather complicated and expensive. That is why the patients want to be sure about the successful result in advance. The investigations carried out at the Ott Research Institute of Obstetrics and Gynaecology, Russian Academy of Medical Sciences, and St.... view more... (2001-09-21)
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