Einfluss der Immobilisation auf die Spermiogenese

Abstract

The author investigated the influence of immobilization stress on spermiogenesis in rats. After 96 h immobilization, histological changes began to manifest in the form of a practically complete disappearance of the cell population of the wall of seminiferous tubule as well as a markedly increased number of cells with pathologic mitoses. Enzymological investigations have shown in particular groups (24, 48 and 96 h immobilization) various changes of activity (of acid and alkaline phosphatase, nonspecific esterase and glucose-6-phosphatase) which, after temporary negativity, became positive again in the last group.

Chronic immobilization-induced stress increases plasma testosterone and delays testicular maturation in pubertal rats

“…Prolonged immobilization of subhuman primates caused degenerative changes of the germinal epithelium and spermatogenesis arrest (Cockett et aL, , 1971Zemjanis et al, 1970) and a shorttime immobilization of male rats caused complete disappearance of the germ cell population (Meitner, 1976). Prolonged immobilization of subhuman primates caused degenerative changes of the germinal epithelium and spermatogenesis arrest (Cockett et aL, , 1971Zemjanis et al, 1970) and a shorttime immobilization of male rats caused complete disappearance of the germ cell population (Meitner, 1976).…”

Decreased spermatogenic and androgenic testicular functions in adult rats submitted to immobilization-induced stress from prepuberty

“…Although short-or long-term immobilization is stressful to laboratory animals, the magnitude of the response depends on the intensity and duration of the stimulus (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11). Experiments are in progress in our laboratory using a model of aversive stimulation -6 h of daily immobilization -to investigate the effects of stress on the onset of puberty in male rats.…”