Apr 7, 2023
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Researchers have found that a protein in the cell membranes of sperm plays a key role in how they find their way to eggs. The PMCA protein may also help explain how egg cells only interact with sperm from the same species. PMCA may even be a target of drug discovery.
Researchers have found that a protein in the cell membranes of sperm plays a key role in how they find their way to eggs. The PMCA protein may also help explain how egg cells only interact with sperm from the same species. PMCA may even be a target of drug discovery.
Sperm are excellent navigators. If they weren't we wouldn't even be here. Professor Manabu Yoshida from the Misaki Marine Biological Station at the University of Tokyo and colleagues investigate why sperm behave the way they do.
Sperm cells, bacteria and other microscopic organisms use varying concentrations of chemicals in their environment—concentration gradients—to approach or avoid something in a process called chemotaxis. Egg cells release an attractant chemical, which lures the sperm. The researchers studied this action in Ascidia—sea squirts, brainless tubular creatures, which are only mobile as larvae.
"We identified that a calcium transport protein—plasma membrane Ca2+ ATPase (PMCA) - has a key role in sperm chemotaxis," says Yoshida. "PMCA is abundant in the tails or flagella membranes of the ascidian sperm. It binds to the species-specific attractant and alters how the flagella waves, thus directing movement of the sperm cell."
Sperm Cells Don't Cry
Cover of: Big Girls Don't Cry by The Four Seasons
Sperm cells don't cry
Sperm cells don't cry
Sperm cells don't cry-yi-yi (they don't cry)
Sperm cells don't cry (who said they don't cry?)
My sperm cell said goodbye-yi-yi (my oh my)
My sperm cell didn't cry (I wonder why)
(Silly cell) told my sperm cell we had to break up
(Silly cell) hoped that she would call my bluff
(Silly cell) then she said to my surprise
"Sperm cells don't cry"
Sperm cells don't cry-yi-yi (they don't cry)
Sperm cells don't cry (who said they don't cry?)
(Maybe) I was cru-you-uel (I was cruel)
Baby I'm a fool (I'm such a fool)
(Silly cell) "Shame on you" your mama said
(Silly cell) "Shame on you, you're cryin' in bed"
(Silly cell) "Shame on you, you told me lies"
Sperm cells do cry
Sperm cells don't cr-yi-yi (they don't cry)
Sperm cells don't cry (that's just an alibi)
Sperm cells don't cry
Sperm cells don't cry
Sperm cells don't cry
Sperm cells don't cry
Sperm cells don't cry
कंसीव करने और गर्भवती होने में समस्या आ रही है तो डाइट में Zinc को करें शामिल
कंसीव करने और गर्भवती होने में समस्या आ रही है तो डाइट में Zinc को करें शामिल
नई दिल्ली: कोरोना वायरस महामारी (Coronavirus) ने न सिर्फ हमारे जीवन जीने के तरीके में बदलाव कर दिया है बल्कि कई रिसर्च में यह बात भी सामने आयी है कि जिन लोगों को कोरोना वायरस संक्रमण (Infection) होता है उन्हें प्रजनन संबंधी दिक्कतों (Fertility Problem) का सामना भी करना पड़ता है. लेकिन एक ऐसा खनिज पदार्थ है जो गर्भधारण (Conceive) करने से जुड़ी दिक्कतों को दूर करने में आपकी मदद कर सकता है और वह है-…
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Does Covid-19 Impact Male Fertility? Experts Urge Caution About New Evidence
Does Covid-19 Impact Male Fertility? Experts Urge Caution About New Evidence
Severe cases of Covid-19 might impact the quality of a man’s sperm, thus possibly impacting his fertility, according to a new study published Thursday in the journal Reproduction. “This report provides the first direct evidence to date that COVID-19 infection impairs semen quality and male reproductive potential,” the study said. However, experts not involved in the study were immediately…
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Two patterns in nature, pen
Spine and Iris- the way you see life all depends are where you stand
Nervous system and sperm cells- well, I think you see where I’m going with that one ;)
7 Spunky Facts About Sperm That Won’t Let You Sleep
7 Spunky Facts About Sperm That Won’t Let You Sleep
I think it’s safe to say that we’re all well aware that sperm is necessary for the creation of another human being. However, sometimes, besides that brief Vicky Donor stint, of course, these strange tadpole-looking cells just don’t receive enough credit for the role they play in the conception of life.
It may have to do with the fact that women steal all the limelight, what with having to carry…
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Male Fertility Is Threatened By Sunscreens? For all those surfing the Internet for sperm boosters there is a bad news. Sperms have a new villain which everyone previously thought as “just a skin product.” Sunscreens pose a new threat to sperms which can lead to infertility. According to CNN, chemicals used in everyday products ... http://www.healthaim.com/male-fertility-threatened-sunscreens/51890
Male Fertility Is Threatened By Sunscreens? - http://www.healthaim.com/male-fertility-threatened-sunscreens/51890
For all those surfing the Internet for sperm boosters there is a bad news. Sperms have a new villain which everyone previously thought as “just a skin product.” Sunscreens pose a new threat to sperms which can lead to infertility. According to CNN, chemicals used in everyday products ...