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    • 3. 发明授权
    • Coelomic fluid extract from Pheretima posthuma for providing sperm immotility
    • 来自Pheretima posthuma的脑膜液提取物用于提供精子不育
    • US06569464B1
    • 2003-05-27
    • US09822756
    • 2001-03-30
    • Mohua MukherjeeShampa BiswasMalabika DattaSamir BhattacharyaRanjan BhadraAlok Pal
    • Mohua MukherjeeShampa BiswasMalabika DattaSamir BhattacharyaRanjan BhadraAlok Pal
    • A01N6300
    • A61K35/62
    • A sperm immotility and anti-fertility agent is provided. The agent comprises coelomic fluid extract which is obtained from an Indian earthworm, Pheretima posthuma, belonging to the phylum, Annelida. The agent may further comprise pharmaceutically acceptable additives and can be in the form of a solution, gel, powder, capsules, tablets or cream. The agent is a non-steroid and also can be used externally. Upon further purification a protein can be isolated having a molecular weight of 20 kilodaltons. This protein is anionic and non-toxic and also is without hemolytic activity. Also the protein as well as the extract can provide 100% sperm immotility within 2 minutes. In addition, methods of isolation of an active factor of the coelomic fluid, determination of toxicity and hemolytic activity of the agent as well as preparing a sperm suspension from male rats and mice useful for bio-assay are disclosed.
    • 提供精子不育和抗生育剂。 该药剂包括得自印度蚯蚓Pheretima posthuma,属于门,Annelida的肠液提取物。 该试剂可以进一步包含药学上可接受的添加剂,并且可以是溶液,凝胶,粉末,胶囊,片剂或霜剂的形式。 该药剂是非类固醇,也可以在外用。 进一步纯化后,可以分离出分子量为20千道尔顿的蛋白质。 该蛋白质是阴离子和无毒的,也没有溶血活性。 蛋白质和提取物也可以在2分钟内提供100%的精子不育。 此外,公开了分离体液的活性因子的方法,药物的毒性测定和溶血活性以及从用于生物测定的雄性大鼠和小鼠制备精子悬浮液的方法。