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- W2300907178 abstract "The objective of these studies was to evaluate the modulatory effect(s) of progesterone on sperm functions crucial to fertilization in infertile men with abnormal sperm parameters. A prospective, controlled study applying a sequential diagnostic analysis capable of identifying specific dysfunctions of the male gamete was performed. Patients (n = 14) were allocated to the study group if they had a history of infertility of >1 year duration and after semen evaluation showed teratozoospermia (< 14% normal sperm forms as diagnosed by strict criteria) or terato-asthenozoospermia (< 50% progressive motility). After swim-up separation of the motile sperm fraction, the following functions were assessed with and without previous exposure to progesterone (1.0 μg/ml): acrosome reaction (using Pisum sativum agglutinin), hyperactivated motility (using a computerized semen analyser), sperm-zona pellucida binding (in the hemizona assay), sperm-zona pellucida penetration (in a sperm-zona penetration assay), and sperm-oocyte penetration (using the hamster zona-free oocyte/sperm penetration assay). Progesterone did not affect the percentage of acrosome-reacted spermatozoa after 1 or 3 h of incubation. Hyperactivated motility was significantly enhanced by progesterone after 1 h (12 ± 4 versus 6 ± 2% in controls; P < 0.02). Although progesterone did not affect sperm-zona binding, it significantly enhanced both sperm-zona pellucida penetration (27 versus 12% in controls; P = 0.03) and sperm-oocyte penetration (15 versus 8% in controls; P < 0.05). Because those sperm functions enhanced by progesterone are crucial to fertilization, the steroid may have value in the treatment of some male-factor patients undergoing assisted reproductive therapy." @default.
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- W2300907178 date "1994-07-01" @default.
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- W2300907178 title "Fertilization and early embrology: A sequential analysis of the effect of progesterone on specific sperm functions crucial to fertilization in vitro in infertile patients*" @default.
- W2300907178 doi "https://doi.org/10.1093/oxfordjournals.humrep.a138702" @default.
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