Histologic and histomorphometric study of epididymis after immobilization stress in mice

Subject Areas : Veterinary Clinical Pathology

esmaiel  safavi ¹ (دانشگاه آزاد اسلامی، واحد تبریز، دانشکده دامپزشکی، استادیار گروه علوم پایه، تبریز، ایران.)
hadi  khayyatnouri ² (دانشگاه آزاد اسلامی، واحد تبریز، دانشکده دامپزشکی، استادیار گروه علوم پایه، تبریز، ایران.)

Received: 2013-10-08 Accepted : 2014-03-03 Published : 2013-11-22

Keywords: Immobilization stress, Epididymis, Histology, Histomorphometry,

Abstract :

Immobilization stress as a physical and psychological stress, has adverse effects on various body tissues. Numerous studies have been conducted on the effects of stress on reproductive system and fertility. The Main aim of this study is evaluation of effect of immobilization stress on epididymal tissue in mice. In this study 140 adult male mice were randomly divided in to 7 groups as test and 7 groups as control animals. In test groups,the animals were subjected to immobilizationstress for 1, 3, 7, 15, 30 and 60 days respectively. In control groups,the animals were only handled. After the experimental periods, blood samples were collected for measurements of serum cortisol and testosterone and epididymal tissue samples were obtained for histologic and histomorphometric study. The results of this study showed that level of testostrone in all test groups significantly decreased in comparison tothe control groups(p<0/05). Cortisol level in test group at 1, 3, 7, and15 days significantly increased (p<0/05) and in other groups no significant difference was observed. Histological study showed that in groups which were stressed for 30,45 and 60 days ,in head ,body and tail of epididym ,diameter of tubules were decreased  and interstitial tissue significantly increased (p<0/05). thickness of epithelium in head and body of epididym and in the tail region significantly decreased (p<0/05) in groups which were under stress for 15, 30, 45 and 60 days and 30, 45and 60 days respectively (p<0/05). Result of this study confirmed adverse effect of immobilization stress on epididymal tissue with increasein time of stress, side effects also increases.

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