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Latest Semen Stories

2012-05-25 05:33:08

(Ivanhoe Newswire) - A new type of male contraceptive could be created thanks to the discovery of a key gene essential for sperm development. This could lead to alternatives to the conventional male contraceptives which rely on the production of hormones, such as testerone. Research led by the University of Edinburgh, shows how the gene Katnal1 is critical to enable sperm maturity in the testes. If scientists can regulate Katnal1 in the testes, they could prevent sperm completely maturing,...

2012-05-23 18:47:58

IDIBELL and Puigvert Foundation researchers detect predictive biomarkers of the fertilizing capacity of sperm donors The study represents a breakthrough in understanding the causes of unexplained infertility The discovery is protected by a patent application which will develop a new diagnostic test independent of seminogram The diagnosis of male fertility is usually performed through the observation of the sperm in the microscope. However, a normal quality semen does not guarantee...

Sperm Crawl And Collide On Way To Egg
2012-05-07 14:12:38

Scientists at the Universities of Birmingham and Warwick have shed new light on how sperm navigate the female reproductive tract, 'crawling' along the channel walls and swimming around corners; with frequent collisions. Research results published today (Tuesday May 8, 2012) in the Proceedings of the National Academy of Sciences of the United States (PNAS) provide fresh insight into how sperm might find their way to the egg that will help to inform future innovation in the struggle to treat...

2012-05-01 09:44:46

Experts from Durham University have identified a new gene that could help the development of fertility treatments in humans in the future. Scientists from Durham University, UK, and Osaka University, Japan, looking at fertility in mice, have discovered for the first time that the gene, which makes a protein called PDILT, enables sperm to bind to an egg, a process essential to fertilization. The team found that when the gene was 'switched off' in male mice, less than three per cent of...

2012-03-29 00:19:09

Treatments for childhood cancers are increasingly successful with cure rates approaching 80%, but success often comes with a downside for the surviving men: the cancer treatments they received as boys can leave them sterile as adults. Now, a research team led by Ralph Brinster of the University of Pennsylvania School of Veterinary Medicine has completed a 14-year experiment that gives hope for a technique that could restore their fertility.  Brinster is the Richard King Mellon...

2012-03-13 22:51:18

Men's diets, in particular the amount and type of different fats they eat, could be associated with their semen quality according to the results of a study published online in Europe's leading reproductive medicine journal Human Reproduction today (Wednesday). The study of 99 men in the USA found an association between a high total fat intake and lower total sperm count and concentration. It also found that men who ate more omega-3 polyunsaturated fats (the type of fat often found in fish...

2012-03-08 00:54:06

The speed at which the calcium concentration in the cell changes controls the swimming behavior of sperm. They can calculate the calcium dynamics and react accordingly. Sperm have only one aim: to find the egg. The egg supports sperm in their quest by emitting attractants that induce changes in the calcium level inside sperm. Calcium ions determine the beating pattern of the sperm tail which enables sperm to steer. Together with colleagues from the Max Planck Institute for the Physics of...

2012-02-29 14:09:28

It had long been assumed that the human sperm cell´s mission in life ended once it had transferred its freight of parental DNA to the egg. More recently however, other components of sperm have been implicated in fertilization, and perhaps even in subsequent embryonic development. In a new study appearing in the Proceedings of the Royal Society, Timothy Karr, a researcher at Arizona State University´s Biodesign Institute, along with colleagues from the Universities of Cambridge...

2012-02-29 00:30:32

Sperm cannot detect smells. According to a 2003 study by German and American scientists, a component of the Lily of the Valley scent known as Bourgeonal alters the calcium balance of human sperm and attracts the sperm. The “Lily of the Valley phenomenon” — also the title of a book about smelling — was born as a result of this discovery that sperm act as swimming olfactory cells which follow a “scent trail” laid by the egg. However, a detailed explanation...


Latest Semen Reference Libraries

Prostate
2013-03-04 15:21:55

The male prostate gland acts as an exocrine gland in the male reproductive system. It is a firm, partly muscular, chestnut sized gland near the neck of the urethra in males. Formation and Orientation The prostate is usually formed within the ninth week of the embryonic stage in reproductive development. The prostate can be separated into either “lobes” or “zones”. When looking at a prostate divided into zones, there are four distinct regions. The first zone is the Peripheral...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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