Comparison of human cervical mucus and artificial sperm penetration media
نویسندگان
چکیده
منابع مشابه
Macaque sperm coating protein DEFB126 facilitates sperm penetration of cervical mucus.
BACKGROUND Sperm coating protein beta-defensin 126 (DEFB126) is adsorbed onto the entire surface of macaque sperm in the caudal epididymis and is retained on viable sperm collected from the cervix and the uterine lumen of mated female macaques. We investigated the role of sperm coating protein DEFB126 in cervical mucus penetration (CMP). METHODS Cervical mucus (CM) was collected from peri-ovu...
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In 1980 Katz et al. derived a formula for the percentage of successful collisions (PSC) as a quantitative measure of sperm-cervical mucus penetration efficiency. The use of PSC waned after its validity was questioned by reports of values >100% and the observation that PSC varied with the cross-sectional area of the mucus column. The aim of the present study was to develop a more accurate measur...
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Penetration of cervical mucus by spermatozoa was observed in cycling and infertile women, in women on sequential or combination oral contraceptive medication, and in women with an IUD in situ. _Sperm penetration of cervical mucus varied from women not using contraceptives and from infertile women, to patients taking sequential conception control pills. In cycling women penetration was low in th...
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Improvements in the acceptability and effectiveness of the IUD involve developments in design of its shape such as the Dalkon Shield (Davis, 1971), or the addition ofa copper-releasing wire to the inert plastic material of the device, which was first reported by Zipper, Medel & Prager (1968). The copper could act at any stage in the reproductive process. It could interfere with sperm transport,...
متن کاملSperm counts in enzymatically liquefied cervical mucus: quantitative validation using donor cervical mucus.
The post-coital test evaluates the penetration of spermatozoa into cervical mucus; it relies on subjective measurements and therefore lacks precision. Enzymatic liquefaction of cervical mucus allows sperm concentration to be measured in post-coital test samples, but the reliability of such measurements is not known. Donor cervical mucus was used as a model to test the accuracy and sensitivity o...
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 1999
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/14.11.2812