Gonadotropin-releasing hormone

Introduction In vertebrates, reproduction is primarily controlled by the hypothalamus-pituitary-gonad axis. The gonadotropin-releasing hormone (GnRH) neurons in the hypothalamus are key regulators of the hypothalamic neuroendocrine system mainly though the synthesis of GnRH (Moenter et al., 2003). The decapeptide GnRH is released from the hypothalamus in a pulsatile manner, and the amplitude and frequency of these pulses change throughout the estrous cycle (McCartney et al., 2002; Moenter et al., 2003). High amplitude and low frequency pulses of GnRH secretion occur during the luteal phase of the estrous cycle with pulse frequency increasing and amplitude decreasing during the follicular phase (Savio et al., 1988; Clarke and Pompolo, 2005).…

synthetic decapeptide hormone which falls under the gonadotropin-releasing hormone agonist (GnRH agonist) utilized as the pamoates or acetate salts. GnRH is Triptorelin (GnRH) initiates persistent stimulation of the pituitary glands and therefore leads to a decline in the levels of follicle stimulating hormone (FSH) and gonatropins luteinizing hormone (LH) secreted by the pituitary gland. It achieves this function by over stimulating the body’s production of these hormones hence leading to a…

Puberty is considered to be a period of transition consisting of both physiological and morphological changes when an individual becomes a fecund adult from a juvenile. All mammals undergo puberty (1) although the precise timing of this event is different for each species. Pubertal onset, in mammals, is governed by the pulsatile release of gonadotropin-releasing hormone (GnRH) from the hypothalamus. GnRH promotes secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from…

maintains blood glucose levels and other nutrients, oversees the functions of the reproductive system, controls contractions of the uterus during childbirth and stimulates breast milk, and aids in the effective of the immune system. The releasing and inhibiting hormones that are produced and released from hypothalamic neurons are the growth hormone-releasing hormone (GHRH), growth hormone-inhibiting hormone (GHIH), Thyrotropin-releasing hormone (TRH), Corticotropin-releasing hormone (CRH),…

Helen E. FisherPh.D. , states that “the three emotional systems lust, attraction, and attachment are somewhat disconnected in human beings...” (Fisher, 2000). I am strongly going to agree with that theory. The emotional systems of men are timed with biological reproduction abilities and driven by hormones or the lack of them hormones such as Testosterone, Vasopressin and Estrogen. Gender behavior patterns that are instilled in men such as not showing emotion such as through crying and through…

such as, estrogen levels in women, body mass index in different races of men, one study sought to figure out who is more likely to develop colon cancer. Other studies aim to understand what specific effects one’s diet has concerning colon cancer. One research group evaluated the correlation between high intakes of plant foods and fiber and people who developed colon cancer. Another study focused on antioxidant and DNA methylation-related nutrients and risk of distal colorectal cancer. While…

Epoprostenol • Definition of epoprostenol (Flolan). - Epoprostenol belongs to some hormones which present in the body naturally called prostaglandins. - It is derived from arachidonic acid . This medication is taken by a continuous injection in the vein by the use of an infusion pump . - Generic Name: Epoprostenol sodium - Brand Name : Flolan Fig. 1 Chemical structure of epoprostenol • During comparison between two GPs of patients with PPH.one of them are treated with…

making the same individuals lose hope and just stop looking. But, with a bit of right information and a correct approach, anyone can get the same supplement in a simple and easy manner, so they too can begin the process of weight loss. Here are the essential facts about how to find the best HCG drops around. What do HCG Drops Represent? Before finding the best option for buying these drops, any potential customer should have a basic knowledge about what HCG drops are and what are they made…

McDonald's for every meal is really bad for you, but more and more research has been leaning toward quantity have a larger effect on weight loss than the quality of a person's diet. This doesn’t negate the saying “we are what we eat” by the French physician Anthelme Brillat-Savarin in 1826. What we eat is more important that how much time we spend lifting weights. Eating a big fiber filled breakfast fuels the body during the day and eating a smaller dinner allows it to focus on repairing the…

Oxytocin is the love hormone that is released by both men and women. Even though oxytocin levels are higher in women, oxytocin effects both genders the same. One problem with oxytocin is that anyone can access this hormone without a prescription. The Food and Drug Administration has not regulated oxytocin so the side and long term effects are not known (Pappas, 2015). Oxytocin helps women with nursing and the birth process. “The hormone causes uterine contractions during labor and helps shrink…