Mendelson and Gorzalka recently described a bilevel chamber for the evaluation of rodent sexual behavior. In initial studies it was observed that during 5 min adaptation periods prior to the introduction of a sexually receptive female rat, male rats with prior sexual experience in these chambers would move from level to level in apparent search for the female rat. In Experiment 1, we examined t...

Background: Ribes biebersteinii (Rb) is one of pharmaceutical plants which was used in traditional medicine for decreasing blood sugar. Objective: In this study, effect of aqueous fruit extract of Rb on blood sugar of rats was investigated. Methods: In this research 60 male Wistar rats were categorized randomly in 10 equal groups with two timeframes (7 & 14 days). Extraction of Rb was perfor...

Introduction: Gingiva is one of the oral mucosa that most susceptible to injury, factors surgical procedures such as curettage which will be followed by a natural wound healing process. When occurs, cells act building blocks ground substance and formation collagen fibers in closing are fibroblast cells. Many people think earthworms (Lumbricus rubellus) only animal feed or fish feed, but have ma...

Objectives: This study evaluates the effects of 8 weeks of resistance exercises on the expression of neurotrophins and Trk receptors in Alzheimer model male Wistar rats. Methods: For this purpose, 32 mature male Wistar rats with a mean weight of 230-280 g were chosen and divided into Alzheimer and Sham groups. The rats in the sham group received normal saline, while the ones in the Alzheimer g...

Our laboratory has shown that the Y chromosome has a significant effect on blood pressure in the spontaneously hypertensive rat (SHR) model of hypertension and that the testes and androgen receptor contribute to the blood pressure rise. As an extension of our research, we have developed two new rat strains, SHR/a and SHR/y (F11) to study the Y chromosome. The objectives of the following researc...

The first two weeks of life are a critical period for hippocampal development. At this time gonadal steroid exposure organizes sex differences in hippocampal sensitivity to activational effects of steroids, hippocampal cell morphology and hippocampus dependent behaviors. Our laboratory has characterized a robust sex difference in neonatal neurogenesis in the hippocampus that is mediated by estr...

Objective: To study the teratogenic effects of Bisphenol A exposure during maternal pregnancy and lactation on testicular histology developing rat pups.
 Design Study: Laboratory-based experimental study.
 Place Duration Department Anatomy, Islamic International Medical College Rawalpindi in collaboration with National Institute Health (NIH) Islamabad Pakistan from Sep 2018 to 2019.&#...