女人身体可以选择精子

女人身体可以选择精子 女性身体能够抵制不匹配的男性同伴的精子。如果一个女人与一个男人的精液接触少于3个月，那么这个 男人的精子将很可能不能导致女性怀孕。这项研究可以改善不孕不育症和流产的治疗方法。 一位澳大利亚的研究者在周三说，女性身体可以无意识地选择精子，允许某些男人的精子能 更进一步而导致怀孕，而不给不匹配的精子任何机会。 阿德莱德大学的教授萨拉.罗伯森（Sarah Robertson）说她的研究明精子中含有信号分子，这些分子能够使得女性体内的免疫力变化，从而使得这个这个女性的身体能够接受这个精 子。 但是一些显然很健康的精子却不能触发女性体内的上述变化，因此，可以看出，女性身体系 统对她的生物学意义上的伴侣有选择性，罗伯森这么说。 “这非常像是双人舞，”罗伯森说。 “男性提供能够增加怀孕或促进怀孕机会的信息，而女性体内拥有一个质量控制系统，需要 男性说明他的精子跟她是匹配的，”她补充道。“这就想配合不默契的舞伴中出错--如果男性 给的信号不足够强烈，或者女性的身体系统太„挑剔?。” 罗伯森说，如果女性没有预先接触某个男性精液至少三个月的时间，那么这个男性的精子很 可能不能导致怀孕。 “我们过去常常认为，如果一对伴侣不能怀孕，而男性的精液测试又是正常，那么问题肯定 在女性身上。但现在看来，这种结论不一定准确。”罗伯森说。 研究者们更深入地进行研究，他们希望能够找到能够改善不孕不育症和流产治疗的方 法。 Women's Bodies Selective With Sperm : Discovery News THE GIST , A woman's body could reject the sperm of less suitable male partners. , Sperm is more likely to fail if the woman had not been exposed to that man's semen for at least three months. , The research could lead to improved treatments for infertility and miscarriages A woman's body may be unconsciously selective about sperm, allowing some men's to progress to pregnancy but killing off the chances of less suitable matches, an Australian researcher said Wednesday. University of Adelaide professor Sarah Robertson said her research suggested that sperm contains "signaling molecules" that activate immunity changes in a woman so her body accepts it. But some apparently healthy sperm failed to activate these changes, leading to the suggestion that the female system can be "choosy" about its biological mate, she said. "It's rather like a two-way dance," Robertson said. "The male provides information that increases the chances of conception and progression to pregnancy, but the female body has a quality control system which needs convincing that his sperm is compatible," she added. "That's where the dance can go wrong with some couples -- if the male signals are not strong enough, or if the female system is too 'choosy'." Robertson said sperm was more likely to fail if the woman had not previously been exposed to that man's semen for at least three months. "We used to think that if a couple couldn't get pregnant, and the man's semen test was normal, the problem lay with the woman. But it appears this is not always the case," Robertson said. The researchers plan to continue their work, which they hope will lead to improved treatments for infertility and miscarriages.