unilateral orchidectomy (uo) is required when further breeding potential is important. it is sometimes necessary to remove a single testis in a matured stallion for therapeutic reasons. in this study, twelve donkeys were used to evaluate three techniques of unilateral castration, histological and morphological changes on the remaining testis. results of the study showed that each of the surgica...

background: the present study describes the susceptibility of prepubertal testis of mice to prooxidant induced oxidative impairments both under in vitro and in vivo exposure conditions. materials and methods: following in vitro exposure to iron (5,10 and 25 m), oxidative response measured in terms of lipid peroxidation and hydroperoxide levels in testis of pre pubertal mice (4 wk) was more robu...

background: in most mammals, the testis is always maintained at a lower temperature than that in the abdomen, and exposure of the testis to body temperature causes degeneration of germ cells. objective: in this research, the long effect of heat exposure on sperm parameters and microstructure of mouse testis were investigated. cryptorchid mouse were induced by exposure to abdominal heat. materia...

Hydrocele testis is an accumulation of clear fluid between the tunica vaginalis (Pic. 1) and testis (Pic. 2). Adult-onset primary non-communicating hydrocele testis causes progressive swelling and local discomfort on the affected side of the scrotum, and this has been attributed to the enhanced secretion and defective absorption of fluid in the space between the tunica vaginalis and testis. The...

Hydrocele testis is an accumulation of clear fluid between the tunica vaginalis (Pic. 1) and testis (Pic. 2). Adult-onset primary non-communicating hydrocele testis causes progressive swelling and local discomfort on the affected side of the scrotum, and this has been attributed to the enhanced secretion and defective absorption of fluid in the space between the tunica vaginalis and testis. The...

Embryonic testis development requires the morphogenesis of cords and growth of all cell populations to allow organ formation. It is anticipated that coordination of the growth and differentiation of various cell types involves locally produced growth factors. The current study was an investigation of the hypothesis that transforming growth factor-alpha (TGF-alpha) is involved in regulating embr...

During Drosophila metamorphosis, nascent testis myotubes migrate from the prospective seminal vesicle of the genital disc onto pupal testes and then further to cover the testes with multinucleated smooth-like muscles. Here we show that DWnt2 is likely required for determination of testis-relevant myoblasts on the genital disc. Knock down of fibroblast growth factor receptor (FGFR) heartless by ...

The objective of the current study was to determine the role of transforming growth factor beta (TGFb) during seminiferous cord formation and embryonic testis development. The expression pattern of mRNA for TGFb isoforms was evaluated during testis development through a quantitative reverse transcriptionpolymerase chain reaction (QRT-PCR) procedure. Expression of mRNA for TGFb1 was highest at p...

background: malathion (mal) is a choice insecticide in the stored grain in different countries. the aim of the present study is to evaluate toxicological effects of 30-day intake of mal on the male reproductive system of wistar rats. methods: this research was ethically approved by the local authority at faculty of medicine, monastir, tunisia. three mal treated groups received 1 ml corn oil con...