Source Pravda.Ru

Male contraception just a shot away

Monkey's immune system aids scientists to design a new type of &to=http://english.pravda.ru/fun/2002/05/15/28737.html' target=_blank>male contraceptive.

They report that they injected nine male macaque monkeys with Eppin, a protein from the testes. Seven became infertile, and of these five became fertile again when the treatment stopped.

Researchers have been experimenting for years to find reliable male hormonal contraceptives. Some are in clinical trials. But so far the only reliable male choice has been &to=http://english.pravda.ru/main/18/90/363/11967_condom.html' target=_blank>the condom, or vasectomy, reports Guardian.

According to The State, male monkeys that developed a strong immune response to the eppin were still able to copulate but could not impregnate females, the researchers said.

"We don’t understand the exact mechanism yet, but we think the immunocontraception works by preventing the sperm from freeing itself from the seminal fluid to make its way to the uterus and oviducts to fertilize the egg," O’Rand said.

In the experiments, carried out in India, seven of the nine males developed high antibody levels. Five of the seven recovered fertility once the immunization ended.

Dr. Patricia Anastasia DeLeon of the University of Delaware said the results were significant and that scientists were lucky to get a protein that would produce antibodies. Normally the body does not produce antibodies against its own proteins, she said.

But, DeLeon said, the testis and epididymis are protected by a barrier so the protein never gets into the bloodstream. So, when eppin was injected into the bloodstream the immune system did not recognize it and produced antibodies.

Ukrainian bloggers draw a parallel between the events in East Timor and the Crimea. Any comparison has a right to exist, but a detailed analysis of the situation does not give a promising forecast to Ukraine

Ukraine dreams of what it can do to Crimea after winning war with Russia
Comments
The end of the theory of a Nobel Prize in chemistry?
Aretha Franklin: A colossus, a woman, a lady, a light and a soul
Russia to respond with military-strategic blow to new USA's sanctions
Putin in Austria: Europe doesn't like Russia very much, but it is fed up with USA too
Putin in Austria: Europe doesn't like Russia very much, but it is fed up with USA too
Peculiarities of Russian sex
Russia must build strong Orthodox coalition in Europe to defeat the West
Ukraine dreams of what it can do to Crimea after winning war with Russia
Putin in Austria: Europe doesn't like Russia very much, but it is fed up with USA too
Putin in Austria: Europe doesn't like Russia very much, but it is fed up with USA too
Aretha Franklin: A colossus, a woman, a lady, a light and a soul
The Sham called Democracy
The Sham called Democracy
Ukraine dreams of what it can do to Crimea after winning war with Russia
Aretha Franklin: A colossus, a woman, a lady, a light and a soul
Ukraine dreams of what it can do to Crimea after winning war with Russia
The Sham called Democracy
Ukraine dreams of what it can do to Crimea after winning war with Russia
Ukraine dreams of what it can do to Crimea after winning war with Russia
Ukraine dreams of what it can do to Crimea after winning war with Russia
Default more likely to hit American, rather than Russian economy