BACKGROUNDS In vitro fertilization involves high dosage gonadotropin stimulation, which apparently has some negative impact on follicular endocrine function. As chorionic gonadotropin stimulation has been shown to increase the blood-follicular permeability in animal models, this raises the question if such an effect also applies to gonadotropins in humans, possibly affecting the endocrine folli...

In this study, a mathematical model is developed for the production of the ovarian hormones (estradiol, progesterone, and inhibin) with input functions which represent blood levels of the gonadotropin hormones (luteinizing hormone and follicle stimulating hormone). A 9-dimensional system of linear, nonautonomous, ordinary differential equations tracks the capacities of 9 stages of the ovary to ...

Background: There have been reports of transient psychosis in women medicated for gynecologic conditions.Objective: The aim of this paper was to explore this literature.Method: The PubMed and Google Scholar databases were searched for relevant case reports Results: The following reports were found: psychosis induced by gonadotropinreleasing hormone in the treatment of endometriosis, by clomiphe...

Introduction. Kallmann syndrome is a genetic disorder marked by hypogonadotropic hypogonadism and anosmia. Patients with have low circulating testosterone levels gonadotropin levels, whereas other pituitary hormones are normal. The treatment based on sex steroid replacement the aim to restore normal pubertal development includes attempts fertility using gonadotropin-releasing hormones. Ultrasou...

Chub mackerel, Scomber japonicus, is heavily farmed and harvested due to its demand as a high-quality protein source rich in fatty acids. However, the effects of environmental cues on sexual maturation fish remain understudied. We aim elucidate effect light manipulation hormones related reproduction stress response species. Mackerel were exposed different photoperiods (12 h light:12 dark or 14 ...

In many vertebrates, the production and reception of species-typical courtship signals occurs when gonadotropin and gonadal hormone levels are elevated. These hormones may modify sensory processing in the signal receiver in a way that enhances behavioral responses to the signal. We examined this possibility in female túngara frogs (Physalaemus pustulosus) by treating them with either gonadotrop...

objective: opioid consumption has been widely increasing across the globe; however, it can cause adverse effects on the body. morphine, an opioid, can reduce sex hormones and fertility. withania somnifera (ws) is a traditional herb used to improve sexual activities. this study strives to investigate the effect of ws on sex hormones and gonadotropins in addicted male rats. materials and methods:...

The hypothalamus regulates the secretion of anterior pituitary hormones via release of releasing hormones into the hypophysial portal vasculature. Additional neuromessengers act at the pituitary to modulate responses to the hypothalamic hormones. For example, neuropeptide Y enhances the effect of gonadotropin-releasing hormone and the response to the prolactin-inhibiting hormone dopamine.

Metformin has been found to reduce elevated gonadotropin levels. Hashimoto’s thyroiditis is the most common thyroid disorder in iodine-sufficient areas, and it often develops postmenopausal women. The aim of this study was investigate whether autoimmune determines impact metformin on gonadotrope secretory function. Two matched groups women were studied: 35 with euthyroid (group A) without disor...

Objective Opioid consumption has been widely increasing across the globe; however, it can cause adverse effects on the body. Morphine, an opioid, can reduce sex hormones and fertility. Withania somnifera (WS) is a traditional herb used to improve sexual activities. This study strives to investigate the effect of WS on sex hormones and gonadotropins in addicted male rats. MaterialsAndMethods In ...