The normal physiology of the female reproductive system involves a hypothalamus that secretes gonadotropin-releasing hormone (GnRH)in a pulsatile manner, a pituitary gland that can be stimulated by the hypothalamus to regularly secrete both luteinizing hormone (LH) and follicle-stimulating hormone (FSH), an ovary that has both methodical enzymatic system and steroidogenesis for producing the se...

during the islamic lunar month of ramadan millions of muslims abstain from drinking and eating from dawn to sunset. the objective of this study was to investigate the effect of intermittent islamic fasting on reproductive function, hypothalamic-pituitary-thyroid axis and the peripheral metabolism of thyroid hormones in men. we measured serum levels of fsh. lh, testosterone, prolactin, fsh, t4 a...

BACKGROUND There is increasing evidence that reproductive abnormalities are increasing in frequency in both human population and among wild fauna. This increase is probably related to exposure to toxic contaminants in the environment. The use of sentinel species to raise alarms relating to human reproductive health has been strongly recommended. However, no simultaneous studies at the same site...

Vascular endothelial growth factor (VEGF) is a key regulator of angiogenesis. In adults, angiogenesis is an infrequent event in the normal tissue except in the female reproductive tract where angiogenesis occurs frequently during the cyclical repair and regeneration of the endometrium as well as in the ovary. Little is known about angiogenesis in the male reproductive tract. The role of VEGF in...

HIGHLIGHTS The proprioceptive system provides a sense of body awareness and detects controls force pressure. Menstruation is the regular, orderly shedding uterine wall, in response to interactions hormones produced by hypothalamus, pituitary, ovaries. Estrogen steroid hormone involved female reproductive organs, as well numerous other biological systems including neuroendocrine, vascular, skele...

BACKGROUND Energy-containing beverages are widely consumed among premenopausal women, but their association with reproductive hormones is not well understood. OBJECTIVE The objective was to assess the association of energy-containing beverages, added sugars, and total fructose intake with reproductive hormones among ovulatory cycles and sporadic anovulation in healthy premenopausal women. D...

BACKGROUND Few human studies have examined bisphenol A (BPA) exposure in relation to semen quality and reproductive hormones in men, and results are divergent. OBJECTIVES We examined associations between urinary BPA concentration and reproductive hormones, as well as semen quality, in young men from the general population. METHODS Our study population consisted of 308 young men from the gen...

Objective: Exposure to heavy metals such as lead (Pb) results in oxidative stress induction in the male reproductive system. Herbal medicine can be utilized as antioxidant agents against oxidative stress. Quercus brantii (QB) has shown antioxidant activity in previous studies. The aim of the present study was to evaluate effects of QB hydro-alcoholic extract against Pb-induced oxidative stress ...