مطالعہ سے پتہ چلتا ہے کہ مادہ منویہ یا منی بیضہ دانی سے انڈے کے اخراج کو متحرک کر سکتی ہے!
A recently discovered protein in semen can cause female mammals to ovulate, new research finds.
The protein has been found in multiple mammal species, including humans, though researchers aren't yet sure what effect it might have onhuman fertility. In cows, they have found, the substance may contribute to the process that keeps pregnancies viable. The same might be true for humans.
"The whole idea of having a chemical substance in the seminal plasma in the male affecting the female's brain and causing her to ovulate is really new for us," said study researcher Gregg Adams, a professor at the Western College of Veterinary Medicine at the University of Saskatchewan.
Adams and his colleagues report their findings today in the journal Proceedings of the National Academy of Sciences.
Mammals can be divided into two groups, Adams said: Induced ovulators and spontaneous ovulators. Spontaneous ovulators are those with a regular menstrual cycle, such as humans. These mammals release egg cells on a regular schedule, whether they've copulated recently or not. [Macho Men: 10 Wild Facts About His Body]
Spontaneous ovulators include animals such as camels and llamas that only release eggs in response to sex.
Researchers long assumed that it was the sex itself that induced this ovulation, Adams said. The stimulation of the vagina or some mix of pheromones was assumed to be the culprit. But in 2005, Adams and his colleagues discovered a protein called ovulation-inducing factor in the seminal fluid of llamas and camels. This protein did exactly what its name would suggest, inducing ovulation in females exposed to it.
In the new study, Adams worked with researchers from the Universidad Austral de Chile in Valdivia, Chile as well as former University of Saskatchewan graduate student Marcelo Ratto to uncover the identity of this mysterious protein. They isolated it from the semen of llamas, a species of induced ovulators, and from cattle, a species of spontaneous ovulators. The same protein has also been found in every mammal the group has studied, from rabbits and pigs to mice and humans.
Source and Read Full Article:
Click.
