Sperm maturation in the domestic cat

Theriogenology
Eva Axnér

Abstract

The epididymis is essential for sperm development and maturation, and, subsequently, the ability of spermatozoa to penetrate and fertilize the female gamete. Functional differences in segments of the long tubule are reflected by histological differences among epididymal regions. The feline epididymis can be divided into six different regions according to their histological differences. A marked increase in sperm concentration occurs between regions 2 and 3, indicating resorption of fluid in region 2, a concept supported by the histological characteristics of the epithelium. At the transition between regions 4 and 5, located between the caput and corpus epididymides, histological characteristics change from being that of a maturation function to being typical of a storage function. Migration of the cytoplasmic droplet and induction of motility occur in this same region. Proteins are secreted from epithelial cells in the feline epididymis by merocrine and apocrine secretion, although the functions of different feline epididymal proteins have not been determined. Hypotaurine, taurine and, probably, alkaline phosphatase are produced by the feline epididymis. During epididymal transit the percentage of immature, unviable and morphol...Continue Reading

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Citations

Jul 14, 2012·ISRN Nursing·Paul Ratanasiripong
Jul 8, 2014·Theriogenology·Valentina VernocchiGaia Cecilia Luvoni
Dec 30, 2010·The Journal of Biological Chemistry·Aicha Jrad-LamineJoël R Drevet
Feb 28, 2013·Acta Veterinaria Scandinavica·Sara VaresiGaia Cecilia Luvoni
Nov 7, 2015·Theriogenology·Panisara KunkittiEva Axnér
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