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- W2014990636 abstract "The effect of human follicular fluid (FF) on the incidence of spontaneous acrosome reactions (AR) in human spermatozoa was examined over a 24-25 h period using electron microscopy. Suspensions of motile spermatozoa were prepared by a swim-up method in Earle's medium, known to support in-vitro fertilization. After adjusting the concentration to 10 x 10(6) cells/ml, suspensions were diluted 1:1 with medium (control) or FF, the latter giving a final concentration of 50% FF. In addition, at 5 h and 24 h an aliquant of the control suspension was removed, diluted 1:1 with FF and incubated for 1 h; the three suspensions were examined at 6 h and 25 h. Continuous exposure to 50% FF stimulated the AR, the effect being significant (P less than 0.001) at 25 h. However, the 1-h short exposure of spermatozoa to FF did not produce an increase in AR, even after 24 h preincubation. In a separate series of experiments, the effect of continuous incubation for 24 h in increasing concentrations of FF was investigated. A significant linear dose-dependent effect on the AR was observed with all concentrations assessed (P less than 0.01 for 12.5% FF and P less than 0.001 for 25, 50, 75 and 100% FF, compared with FF-free control). Therefore, human FF can stimulate the AR, but only after a continuous exposure to FF. A short exposure to FF, even after 24 h preincubation, does not trigger an increased AR response." @default.
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- W2014990636 date "1989-05-01" @default.
- W2014990636 modified "2023-09-29" @default.
- W2014990636 title "Extended exposure to follicular fluid is required for significant stimulation of the acrosome reaction in human spermatozoa" @default.
- W2014990636 doi "https://doi.org/10.1530/jrf.0.0860401" @default.
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