تأثير هرمون الميلاتونين المفرز ذاتيا تحت تأثير الإضاءة المتناوبة و المكثفة على أنسجة الخصية لدى ذكور الهامستر

Abstract EN

This research study was undertaken to determine the relationship between exposure to the intense light of the environment near an organism and melatonin secretion of the pineal gland, as well as its effect on the reproductive efficiency of male hamsters.

It was conducted through a histological and quantitative study of the sexual age (pre-puberty) of the hamsters during two periods of alternating long and intense lighting.

The study showed that exposure to prolonged intense lighting periods had an effect on body weight, the male reproductive system, its tissue structure, the amplitude of the seminal bulb, large in Sertoli cells, and that it changed the form of the interstitial cells to spindle shape, increased the cavity of the channel conveying the sperm, and thickness of the muscle layer.

On the other hand, exposure to short lighting periods had an inhibitory effect on body weight and size of the male reproductive system, atrophy in the testes, lack of dimensions, weight loss, and an inhibitory effect on the structure of the tissue.

It was clear that treated hamsters had an effect on the structure of the tissue, narrowing of the tubes and the epidermis, and the channel of the sperm.

This caused the disappearance of sperm haploid cells, smaller sized Sertoli and interstitial cells, as well as an increase in the thickness of the muscle layer.