Biol Reprod Keystone Symposia Conference on Frontiers in Reproductive Biology & Regulation of Fertility.
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Biology of Reproduction, Vol 41, 790-797, Copyright © 1989 by Society for the Study of Reproduction

ARTICLES

The physiology of sperm recovered from the human cervix: acrosomal status and response to inducers of the acrosome reaction

M Zinaman, EZ Drobnis, P Morales, C Brazil, M Kiel, NL Cross, FW Hanson and JW Overstreet
Department of Obstetrics and Gynecology, Georgetown University School of Medicine, Washington, District of Columbia 20007.

Cervical mucus was collected from 35 women after artificial insemination. Mucus collections were performed at 1 h, 1 day, 2 days, or 3 days following insemination. Sperm viability was greater than 80% at all recovery times as assessed by exclusion of the supravital dye Hoechst 33258. Virtually 100% of the viable sperm were acrosome-intact at all times as assessed with a fluorescein isothiocyanate-conjugated pea lectin. Sperm were recovered from the mucus after migration into the Biggers, Whittin, and Whittingham medium in vitro. Sperm did not undergo the acrosome reaction in response to human follicular fluid immediately after migration from the mucus but did respond to this agonist after 6 h of incubation in vitro. Sperm recovered at all times after insemination had the same pattern of response to follicular fluid. Sperm that penetrated a column of cervical mucus in vitro also responded to follicular fluid with an increase in acrosome reactions after migration from the mucus and incubation for 6 h in vitro. Unlike the sperm that migrated from cervical mucus, sperm that were separated from semen by Percoll density centrifugation did not undergo the acrosome reaction when challenged with follicular fluid after 6 h but did respond after 24 h incubation. Sperm that migrated from cervical mucus had a similar increase in acrosome reactions after 6 h incubation, regardless of whether the acrosome reaction agonist was follicular fluid or disaggregated human zona pellucida.(ABSTRACT TRUNCATED AT 250 WORDS)


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Copyright © 1989 by the Society for the Study of Reproduction.