Background: Up until now, the effect of thyroid hormones on the male reproductive organ, after puberty, is not well understood. OBJECTIVES: In the present study, the morpho-histometrical effects of thyroid hormone deficiency on the adult-male rat reproductive organs were investigated. MATHODS: Thirty adult male rats were randomly divided into three groups (n=10): control, hypothyroid, and hypot...

background: cytotoxic therapy can lead to prolonged azoospermia or even sterility. in the present study, we investigated the morphological changes of mouse testes after gamma-radiation. methods: after anaesthetizing of nmri mice, testes and their surrounding tissues were irradiated using a cobalt therapy machine. four experimental groups were irradiated with fractionated doses of: 1.5+8, 1.5+12...

ABSTRACT: The purpose of this research was to study the histology and describe microscopy findings epididymis epithelium greater Rhea americana at three time periods: November 2005 (n=14), December 2006 (n= 20), May 2007 observe compare differences that occurred. We studied from 54 rheas, bred in Santa Maria, Rio Grande do Sul, Brazil. were collected during commercial slaughter fixed bouin. Opt...

The mitotic rate and goblet cell content of conjunctival epithelium following total or central corneal epithelial removal using n-heptanol was measured to determine how the conjunctival epithelium responds to injury and whether conjuctiva responds to central corneal epithelial loss. One day following a wound that removed corneal, limbal, and 1-2 mm of bulbar conjunctival epithelium, the mitotic...

exogenous enzymes such as xylanase can cause recovery of efficiency in poultry. in this study we investigated the effects of xylanase supplementation on small intestine histomorphometry in broilers chicken. two levels of xylanase supplementation (with or without 0.07% xylanase) was used in 4 treatment groups (two repetitions for each group and 15 chicks per group). after 42 days, 10 chicks from...

Introduction: Date palm gemmule has been used in traditional medicine to improve the semen quality and treat infertility. Their components remedies those are rich of antioxidant and vitamins can influence spermatogenesis. The aim of this project was to evaluate the effects of date palm gommule water/alcoholic extract on reproductive tissues, sex hormone and sperm quality of rat. Methods: Sev...

Background & Aims: Para-Nonylphenol (p-NP) can cause oxidative stress through reducing the activity of scavenging enzymes. The aim of the present study was to investigate the effect of green tea extract, as an antioxidant, on testisin rats exposed to p-NP. Methods: In the present study, 24 Wistar rats with mean body weight of 215 ± 10 g were divided into 4 groups (n = 6)...