A FIRST PROSPECTIVE-STUDY OF THE INDIVIDUAL STRAIGHT-LINE VELOCITY OFTHE SPERMATOZOON AND ITS INFLUENCES ON THE FERTILIZATION RATE AFTER INTRACYTOPLASMIC SPERM INJECTION
M. Vandenbergh et al., A FIRST PROSPECTIVE-STUDY OF THE INDIVIDUAL STRAIGHT-LINE VELOCITY OFTHE SPERMATOZOON AND ITS INFLUENCES ON THE FERTILIZATION RATE AFTER INTRACYTOPLASMIC SPERM INJECTION, Human reproduction (Oxford. Print), 13(11), 1998, pp. 3103-3107
The straight line velocity of 500 individual spermatozoa was measured
immediately before their direct injection into the cytoplasm of 500 me
taphase II oocytes, The straight line velocity (VSL) did not have a no
rmal distribution (P < 0.01) and ranged between 0 and 35 mu m/s. The f
ertilization rate (84%) was significantly (P < 0.008) higher in the qu
artile of the sperm population with the highest VSL compared to the fe
rtilization rate (68 %) in the quartile with the lowest VSL, Embryo cl
eavage and embryo quality were not different in the quartiles of the s
perm population used for injection.