background: different investigation showed that 5-methoxypsoralen and 8- methoxypsoralen reduce birth rates in the rats. objective: in this study we worked out the effect of methoxsalen together with ultraviolent a (uva) radiation on mature balb/c mice spermatogenesis. materials and methods: the ld50 standard was determined 160 mg/kg and the uva dose which causes erythema was calculated 0.046 j...

background physical activity and alteration of temperature as a source of stress may have adverse effects on male reproduction. objectives the aim of this study was to investigate the effect of chronic swimming and standing in cold, warm and lukewarm water on mouse spermatogenesis. materials and methods forty-nine male mice (n = 49) were randomly divided into seven groups: c, control; swc, swim...

The Sertoli cell, which is the supporting cell of spermatogenesis, has an important role in the endocrine and paracrine control of spermatogenesis. Functionally, it provides the cells of the seminiferous epithelium with nutrition, conveys mature spermatids to the lumen of seminiferous tubules, secretes androgen‑binding protein and interacts with endocrine Leydig cells. In addition, the levels o...

In this study we investigate the expression pattern of mucin genes in the human testis and evaluate the relationship between the expression of mucin genes and impaired spermatogenesis in the human testis. Thirty human testis tissues were collected from patients undergoing diagnostic testicular biopsy to investigate the cause of infertility. One part of the tissue underwent histological observat...

4 Androgens.hormonal regulation of spermatogenesis, with an emphasis on the role of testosterone within the. Hormonal messengers are critical not only for regulation of.Spermatogenesis. Cell types involved in sperm production. How they interact to support spermatogenesis. Hormonal regulation of spermatogenesis.ISBN 951-29-2337-8 Print, ł Īī-Ī PDF. The expression and hormonal regulation of beta-...

Many experimental animal models are available for analyzing the process of spermatogenesis, including transgenic animals and strains that inherently lack spermatogenesis [2,3]. In contrast, several experimental systems for inducing spermatogenesis in vitro or in vivo have only been developed in recent decades [4-10] for use as tools for studying the fundamental aspects of spermatogenesis and as...

Spermatogenesis is regulated by the 2 pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH). This process is considered impossible without the absolute requirement of LH-stimulated testicular testosterone (T) production. The role of FSH remains unclear because men and mice with inactivating FSH receptor (FSHR) mutations are fertile. We revisited the role of FS...

Effect of ginger (Zingiber officinale R.) on metiram-inhibited spermatogenesis and induced apoptosis in albino miceSaber A. Sakr, Gamal M. Badawy

dear editor, the problem of congenital hemoglobin disorder is common in tropical asia. in tropical southeast asian countries, very high prevalence of thalassemia disorder especially for beta thalassemia is observed. this tropical hematological problem affects millions of population and cause several health disorders. of interest, the issue of reproductive health impairment of the population wit...