ISSN:
0148-7280
Keywords:
epididymal proteins
;
capacitation
;
gamete interaction
;
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
The localization of rat epididymal protein DE on cauda epididymis spermatozoa was studied with a specific antibody and the peroxidase antiperoxidase (PAP) immunocyto-chemical reaction. At the light microscopic level, all spermatozoa appeared to be labeled over the dorsal portion of the head, whereas tails were negative. This observation was confirmed using scanning electron microscopy. A large number of particles were seen on the external surface of the plasma membrane covering the acrosomal region and a smaller number on the postacrosomal portion. Flagella appeared free of particles. Sperm suspensions were incubated in conditions that induce capacitation and the acrosome reaction, and, in this instance, the permanence of protein DE on the vesicles and the postacrosomal region of the membrane were observed. The localization of this epididymal protein on the sperm surface is compatible with a role in the gamete interaction process.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrd.1120150306
Permalink