quantitative histology of the descended testis of unilateral cryptorchid bucks was compared with testis of normal bucks to evaluate the reproductive potentials of the scrotal testis in unilateral cryptorchids, using light microscopy techniques. the contralateral scrotal testes of the unilateral cryptorchids and the testes of the normal bucks contained profiles of seminiferous epithelium and eac...

objective(s):this study was designed to investigate the effect of phaleria macrocarpa aqueous extract (pm) on spermatogenesis by observing the histological changes of testes in adult male rats. materials and methods: pm was prepared by boiling the dried slices of p. macrocarpa fruits followed by filtering, centrifugation and freeze-drying to obtain the powder form. eighteen sprague dawley adult...

introduction: wistar rats are an outbred strain of albino rats belonging to the species rattus norvegicus. histopathological studies on the testis was carried out to determine the effects of heat and lead on male fertility by evaluating some andrological parameters of the wistar rat such as morphology of spermatozoa, sperm count and motility. the main objective of this research was to compare t...

the aim of the present study was stereological evaluation of testes of azoospermic animal model using busulfan in rat. three groups of male adult rats were used in this study. the first group was injected by single dose of busulfan (10 mg kg-1) and their testes were removed on day 35 post injection. the second group received double doses of busulfan with 21 days interval and their testes were r...

Effect of oral administration of aqueous leaf extract of Kalmegh (Andrographis paniculata) (250 mg/kg body weight/day) on the male reproductive organs of the wild Indian house rat (Rattus rattus) was investigated and its activity was noticed at 30th and 45th days of post treated animals. The treatment had no severe effect on body weight and the reproductive organs weight of rats. In treated rat...

objective(s) urtica dioica l. has been known as a medicinal plant in the world. this study was conducted to determine the effects of the hydroalcoholic extract of urtica dioica leaves on seminiferous tubules of diabetic rats. materials and methods animals were allocated to control, diabetic and protective groups. treated animals received extract of u. dioica (100 mg/ kg/ day) ip for the first 5...

The final step in the biosynthesis of testosterone is the reduction of androstenedione, which is catalyzed by the microsomal enzyme 17-ketosteroid reductase. Evidence is presented which suggests that there are two distinct 17ketosteroid reductases in rat testes, one in interstitial tissue and one in seminiferous tubules. The two enzymes have different pH optima, 5.6 for the one from interstitia...

To study self-renewal and differentiation of spermatogonial stem cells, we have transplanted undifferentiated testicular germ cells of the GFP transgenic mice into seminiferous tubules of mutant mice with male sterility, such as those dysfunctioned at Steel (Sl) locus encoding the c-kit ligand or Dominant white spotting (W) locus encoding the receptor c-kit. In the seminiferous tubules of Sl/Sl...

Experimental investigations showed that bisphenol A (BPA) affects the male reproductive tract. The male hormones level, androgen`s receptors, male reproductive organs, the testes, the epididymis, the seminal vesicles, the prostate and sperm production are affected by this substance. The objective of this study is to present the effects of bisphenol administration upon spermatogenesis at mice. D...