PMID: 8452938Mar 1, 1993Paper

Functional and morphological features of spermatozoa microaspirated from the epididymal regions of cynomolgus monkeys (Macaca fascicularis)

Biology of Reproduction
M C MahonyG D Hodgen

Abstract

In most species examined to date, spermatozoa mature during transit through the epididymis to become functionally competent to swim progressively, fertilize oocytes, and produce viable offspring. In the studies presented here, the status of spermatozoa obtained from the regions of the epididymis of the cynomolgus monkey (Macaca fascicularis) was examined. Epididymal fluid was collected by microaspiration from the caput, corpus, and cauda regions. The spermatozoa obtained were evaluated for morphology, motion parameters, and tight zona pellucida binding and were compared to spermatozoa collected by electroejaculation. Epididymal and ejaculated sperm differed morphologically only in the location of the cytoplasmic droplet. Motile sperm recovered by swim-up procedure exhibited a significantly higher proportion of sperm with more distal cytoplasmic droplets than the original aspirated samples (p < 0.02). Poor duration of movement was most noticeable for corpus spermatozoa, and to a lesser degree for cauda spermatozoa, when the motion parameters of velocity, linearity, and amplitude of the lateral head were examined. Zona pellucida binding was decreased only for sperm microaspirated from the caput region; sperm obtained from the cor...Continue Reading

Citations

May 29, 2000·Contraception·M C MahonyG Doncel
Nov 13, 2001·Contraception·E GoldbergG F Doncel
Jun 15, 1999·International Journal of Andrology·G van Der HorstS Hendricks
Mar 1, 1994·American Journal of Reproductive Immunology : AJRI·M C MahonyG D Hodgen
Jun 26, 2007·Asian Journal of Andrology·Russell C JonesHeath W Ecroyd
Aug 15, 2014·International Journal of Toxicology·Klaus WeberJerry F Hardisty
Sep 15, 2020·Molecular and Cellular Endocrinology·Guillaume Martinez, Cécile Garcia

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