R. Henkel et al., DETERMINATION OF THE ACROSOME REACTION IN HUMAN SPERMATOZOA IS PREDICTIVE OF FERTILIZATION IN-VITRO, Human reproduction, 8(12), 1993, pp. 2128-2132
The acrosome reaction was determined in aliquots from ejaculates of 74
patients undergoing in-vitro fertilization at the University of Giess
en, Germany, by means of the triple-stain technique. The percentage of
acrosome-reacted spermatozoa after low-temperature induction of the a
crosome reaction was not significantly related with the fertilization
rate (H test, P = 0.693, SJ test, P = 0.366). However, all patients sh
owing < 13.0% acrosome-reacted spermatozoa had poor fertilization rate
s. Highly significant differences between patients could be detected b
y correlating the inducibility of the acrosome reaction with the ferti
lization rate (H test, P = 0.018; SJ test, P = 0.004); patients with h
igh fertilization rates showed a corresponding high inducibility of ac
rosome reactions. From our results, it is evident that percentages of
acrosome-reacted spermatozoa < 13.0% or an inducibility of the acrosom
e reaction of < 7.5% are indicative of subfertility.