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Scientists Discover Sperm's Motility Secret

Feb 08, 2010
Scientists uncovered the secrets of the fertilization process, discovering the mechanism that makes sperm swim to the egg. This finding can lead to the development of the innovative male birth control methods and new infertility treatments.

It has been long known that sperm is motile only for a short period of time. In the male reproductive tract sperm is in a passive state or they will easily be worn out and won't be able to fertilize the egg. In order to make sperm move on, there should be the right environment. When sperm gets into female reproductive tract, the alkaline pH inside vagina makes sperm release protons, which stimulates sperm to swim to the egg.

Yuriy Kirichok, the leading researcher at the University of California, San Francisco, explains that the concentration of protons inside the sperm cell is 1,000 times higher than outside. If you open a pore, the protons will flow out and the sperm will swim. In fact, sperm flagellum, a long and thin structure, has numerous Hv1 proton channels. External factors, such as alkaline environment of the vagina or removal of zinc outside the cell make the pores open, which prompts sperm to swim.

Scientists say that the discovery of the Hv1 proton channels may help them develop novel male birth control methods. This can be done by learning how to block the molecule that activates sperm. Otherwise, scientists can find a way to stimulate sperm to move on to fertilize the egg, if the couple deals with infertility issues.

The study was published in the journal Cell, a Cell Press publication.

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Oct 29, 2015 12:40 PM » posted by: Zaffar
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Oct 27, 2015 09:59 PM » posted by: Masaki
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Oct 27, 2015 09:59 PM » posted by: Masaki
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Oct 27, 2015 09:58 PM » posted by: Masaki
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Oct 27, 2015 03:59 PM » posted by: Yasmanialejandro
Can't give you a time line or even a guarantee that it will come back. Each <a href="http://pvsvbxtfe.com">perosn</a> is different as is the recovery outcome. I wish you luck if you want kids. There are methods of concentrating whats left if the sperm is healthy.Overdose of testosterone (more than your body naturally needs) often leads to the testes atrophying. The testes make the testosterone in the male body and when they are no longer called on to work or there is negative feedback (docs argue about why) they stop working.Usually this does not happen to men who have low testosterone and are only supplementing to get the level up to a normal.It was always a mean joke among steroid abusing body builder and others that used to much that there b*lls were like bbs.

Oct 27, 2015 03:59 PM » posted by: Yasmanialejandro
Can't give you a time line or even a guarantee that it will come back. Each <a href="http://pvsvbxtfe.com">perosn</a> is different as is the recovery outcome. I wish you luck if you want kids. There are methods of concentrating whats left if the sperm is healthy.Overdose of testosterone (more than your body naturally needs) often leads to the testes atrophying. The testes make the testosterone in the male body and when they are no longer called on to work or there is negative feedback (docs argue about why) they stop working.Usually this does not happen to men who have low testosterone and are only supplementing to get the level up to a normal.It was always a mean joke among steroid abusing body builder and others that used to much that there b*lls were like bbs.

Oct 27, 2015 03:58 PM » posted by: Yasmanialejandro
Can't give you a time line or even a guarantee that it will come back. Each <a href="http://pvsvbxtfe.com">perosn</a> is different as is the recovery outcome. I wish you luck if you want kids. There are methods of concentrating whats left if the sperm is healthy.Overdose of testosterone (more than your body naturally needs) often leads to the testes atrophying. The testes make the testosterone in the male body and when they are no longer called on to work or there is negative feedback (docs argue about why) they stop working.Usually this does not happen to men who have low testosterone and are only supplementing to get the level up to a normal.It was always a mean joke among steroid abusing body builder and others that used to much that there b*lls were like bbs.

Oct 26, 2015 12:33 PM » posted by: Mike
to avoid soy which may lead to poor sperm quality and aocohll which can lower testosterone.Caffeine can go either way three or more drinks a day may hamper fertility but other studes show that caffeine "may" help with a low sperm count.Hope this helps!

Oct 26, 2015 12:33 PM » posted by: Mike
to avoid soy which may lead to poor sperm quality and aocohll which can lower testosterone.Caffeine can go either way three or more drinks a day may hamper fertility but other studes show that caffeine "may" help with a low sperm count.Hope this helps!


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