background: endometrial remodeling occurs during each menstrual cycle in women. reports have shown that, in a variety of cell types, processes such as proliferation, signaling complex formation and extra cellular matrix remodeling require a cytoplasmic tyrosine kinase, focal adhesion kinase (fak). the present study has focused on the expression pattern of fak in human endometrium during the men...

objective: there are several factors, like environmental agents, neurotrophic factors, serotonin and some hormones such as estrogen, affecting neurogenesis and neural differentiation. regarding to importance of proliferation and regeneration in central nervous system, and a progressive increase in neurodegenerative diseases, cell therapy is an attractive approach in neuroscience. the aim of the...

background and aim: it is well - known that sex hormones regulate bone metabolism. sex steroids increase osteoblasts activities and affect growth, remodeling and bone homeostasis. the aim of this study was to examine the effects of sex hormones deficiency on craniofacial growth in rats. methods & materials: fifty, thirty–day–old wistar rats comprised the sample in this experimental study. 25 ma...

conclusions exposure to formaldehyde vapor can destroy testicular structure and decrease percentages of sperm count and progressive motility. the present study indicated that a reduction in the percentage of progressive motile sperm may be potentiated by noise (700-5700 hz) in the simultaneous exposure to formaldehyde and noise group. thus, it can be anticipated that simultaneous exposure to fo...

The discovery of a plasma membrane ABC protein that exports steroids in yeast highlights the possibility that similar membrane sorting systems in mammalian cells may modulate the access of steroids to their receptors.

background: one of the new methods for elimination or destruction of estrogen hormones is ultrasound irradiation. the aim of this study was to determine the main mechanism of steroid hormones removal by ultrasound. methods: in this study, estrogen (e1) and 17 beta-estradiol (e2) were irradiated with ultrasound at different frequencies, powers, and exposure times in two cases: with and without b...

to study the effect of dietary animal and plant lipids on gonadal differents and sex steroid hormones levels of blood in rainbow trout (oncorhynchus mykiss), the four diets was formulated based on 15% fat. the control uses 100% oil, fish oil was treated in the first, second and third respectively 25% and 75% fish oil, soybean oil, canola and cotton were used. after six weeks of feeding fish wit...