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Topic: Ghrelin

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Satiety

Hormone

Leptin

Appetite

Enteric nervous system

Autonomic nervous system

Vagus nerve

	Ghrelin
		Ghrelin receptors are present on the cells in the pituitary that secrete growth hormone, and also have been identified in the hypothalamus, heart and adipose tissue.
		The ghrelin signal is integrated with that of growth hormone releasing hormone and somatostatin to control the timing and magnitude of growth hormone secretion.
		Overall, ghrelin seems to be one of several hormonal signals that communicates the state of energy balance in the body to the brain.
	www.vivo.colostate.edu /hbooks/pathphys/endocrine/gi/ghrelin.html (576 words)

	Ghrelin hormone information : by Ray Sahelian, M.D.
		Ghrelin hormone information : by Ray Sahelian, M.D. Ghrelin by Ray Sahelian, M.D. Ghrelin hormone is a brain-gut peptide with two main physiological actions: growth hormone secretagogue activity and food intake inducer.
		Ghrelin has other activities including stimulation of pituitary hormones secretion, modulation of food intake and control of energy metabolism, regulation of gastric and pancreatic activity, and cardiovascular and hemodynamic activities.
		Blood samples and subjective measures of satiety were assessed frequently for 3 h after the consumption of 2 isocaloric breakfasts that differed in their protein and carbohydrate content (58% of energy from protein and 14% of energy from carbohydrate compared with19.3% of energy from protein and 47% of energy from carbohydrate).
	www.raysahelian.com /ghrelin.html (561 words)

	Ghrelin
		Ghrelin receptors are present on the cells in the pituitary that secrete growth hormone, and also have been identified in the hypothalamus, heart and adipose tissue.
		The ghrelin signal is integrated with that of growth hormone releasing hormone and somatostatin to control the timing and magnitude of growth hormone secretion.
		Overall, ghrelin seems to be one of several hormonal signals that communicates the state of energy balance in the body to the brain.
	arbl.cvmbs.colostate.edu /hbooks/pathphys/endocrine/gi/ghrelin.html (576 words)

	Ghrelin - Wikipedia, the free encyclopedia
		Receptors for ghrelin are expressed by neurons in the arcuate nucleus and the ventromedial hypothalamus.
		The ghrelin receptor is a G-protein coupled membrane receptor, formerly known as the GHS receptor (growth hormone secretagogue receptor).
		Ghrelin plays a significant role in neurotrophy, particularly in the hippocampus, and is essential for cognitive adaptation to changing environments and the process of learning.
	en.wikipedia.org /wiki/Ghrelin (731 words)

	GHRELIN A NEW HORMONE IMPLICATED IN THE REGULATION OF GROWTH HORMONE SECRETION AND BODY ENERGY HOMEOSTASIS
		Ghrelin is the result of the so called "reverse pharmacology", which started with the development of artificial compounds named growth hormone secretagogues (GHS), followed by the cloning of their receptor and finally the identification of the natural hormone.
		Ghrelin was found to be a potent releaser of GH and in addition, actively participate in controlling energy balance and the regulation of food intake.
		Ghrelin positive cells are positioned close to the capillaries and have no contact with the lumen of the oxyntic gland, indicating that secretion occurs into the plasma and not into the intestinal tract.
	www.gghjournal.com /volume20/1/featureArticle_pf.cfm (3268 words)

	Ghrelin, diet, and pulmonary function CHEST - Find Articles (Site not responding. Last check: 2007-09-10)
		In 1999, ghrelin (a 28 amino acid acyl-peptide) was first described by Kojima et al (1) as the endogenous ligand to the receptor for growth hormone secretagogues, a group of molecules endowed with growth hormone-releasing activity.
		Ghrelin is synthesized primarily in enterochromaffin cells located mainly in the fundus of the stomach.
		Ghrelin secretion is increased by an empty stomach and signals the brain to increase food intake and release growth hormone.
	www.findarticles.com /p/articles/mi_m0984/is_3_128/ai_n15674867 (787 words)

	Ghrelin
		A hormone called ghrelin that's a relative newcomer to the appetite research scene appears to play an important role in keeping calories out of the mouth to begin with.
		Indeed, ghrelin is the first hormone identified that promotes -- as opposed to quashes -- appetite.
		Ghrelin is secreted in the gut, where it acts as a sort of chemical room-service call to the brain for more energy.
	www.sybervision.com /npwc/ghrelin.htm (398 words)

	Linco Research, Inc. - Desacyl-Ghrelin ELISA Kit (Site not responding. Last check: 2007-09-10)
		Ghrelin, a novel growth hormone releasing peptide is an acylated peptide that stimulates the release of growth hormone from pituitary.
		Ghrelin is the endogenous ligand for the growth hormone secretagogue (GHS) receptor and has potent growth hormone-releasing activity.
		It is conceivable that Ghrelin may also have other functions in some tissues in addition to pituitary, because the GHS receptor is expressed in heart, lung, pancreas, intestine, and adipose tissue.
	www.lincoresearch.com /products/ezgdac-87k.html (203 words)

	TSRI - News & Views
		The new vaccine, which is directed against the hormone ghrelin (pronounced "grell-in"), a naturally occurring hormone that helps regulate energy balance in the body, has shown the potential, in animal models at least, to put an end to that risky and often futile struggle.
		Ghrelin, a gastric endocrine hormone produced primarily in the stomach, plays a physiological role in energy homeostasis, although the full extent of that role remains unknown.
		There is broad speculation that ghrelin evolved as a response to the feast or famine conditions of early humans.
	www.scripps.edu /newsandviews/e_20060814/ghrelin.html (1708 words)

	Ghrelin, appetite, and gastric motility: the emerging role of the stomach as an endocrine organ -- INUI et al. 18 (3): ...
		Ghrelin, appetite, and gastric motility: the emerging role of the stomach as an endocrine organ -- INUI et al.
		ghrelin as an endogenous ligand for the "orphan" GHS receptor
		ghrelin neurons abut NPY axons presynaptically in the ARC and
	www.fasebj.org /cgi/content/full/18/3/439 (6265 words)

	Clinical Trial: Ghrelin, GH and Cortisol Interaction in GHD Patients
		Ghrelin is a recently described peptide hormone produced by the enteroendocrine cells of the mucosal epithelial layer in the ventricle.
		Ghrelin is the endogenous ligand for the growth hormone (GH) secretagogue receptor (GHS-R), and, remarkably, the receptor was identified before ghrelin.
		As ghrelin stimulates release of both GH and corticotropin, it is plausible that the substitution-treatment interferes with ghrelin levels.
	www.clinicaltrials.gov /ct/gui/show/NCT00139945?order=3 (470 words)

	Stomach Hormone Linked to Weight (washingtonpost.com)
		Ghrelin is the first hormone from outside the brain that activates it.
		Twenty-four-hour ghrelin production in a group of five gastric-bypass recipients was 72 percent lower than in five obese people whose weights matched those of the bypass recipients, and 77 percent lower than in a group of 10 people of normal weight.
		Ghrelin levels in the bypass recipients were "only slightly above the limit of detection," according to the report by Cummings and colleagues.
	www.washingtonpost.com /ac2/wp-dyn?pagename=article&node=&contentId=A60110-2002May22 (842 words)

	NEL, Effect of ghrelin on glucagon secretion
		The purpose of the study was to examine the effect of ghrelin on glucagon secretion from pancreatic tissue fragments of normal and diabetic rats.
		Ghrelin is a newly discovered endogenous ligand for the growth hormone receptor.
		Ghrelin is present in the arcuate nucleus of the human hypothalamus and pituitary gland [7].
	www.nel.edu /23_56/NEL235602A07_Adeghate.htm (482 words)

	Ghrelin response to carbohydrate-enriched breakfast Nutrition Research Newsletter - Find Articles
		Ghrelin is suggested to be involved not only in meal initiation but also in body weight control, because body mass index (BMI; in kg/[m.sup.2]) is negatively correlated with fasting plasma ghrelin concentrations.
		Ghrelin stimulates the expression of neuropeptide Y and agouti-related protein in the hypothalamus, and this expression stimulates food intake.
		Therefore, the relations among ghrelin, glucose, insulin, and leptin concentrations, and subjective measures of appetite were studied by analyzing the postprandial responses to water and to three liquid breakfasts that differed in the amount and type of carbohydrate.
	findarticles.com /p/articles/mi_m0887/is_3_24/ai_n13648418 (826 words)

	Medscape Search: ghrelin
		Ghrelin is a novel octanoylated peptide, principally secreted from oxyntic cells in the stomach.
		Ghrelin is involved in the regulation of GH release and recently has been found to have other actions, including effects on appetite.
		Ghrelin is involved in the control of glucose homeostasis, but not in obesity, according to a report in the May issue of Cell Metabolism.
	search.medscape.com /uslclient/searchMedscape.do?queryText=ghrelin (851 words)

	Ghrelin and Ghrelin Receptor (GHS-R) Antibodies
		Ghrelin has an unusual modification at Ser3 residue that is n-octanoylated and it is essential for biological activity.
		Ghrelin is the first known example of a bioactive peptide modified by an acyl acid.
		Rat ghrelin is expressed in the stomach, small and large intestines, and brain regions (hypothalamic arcuate nucleus) that are involved the regulation of food intake.
	www.4adi.com /flr/ghsrflr.html (711 words)

	Ghrelin
		Ghrelin participates in energy balance in rodents by decreasing fat utilization without significantly changing energy expenditure or locomotor activity.
		Rat serum Ghrelin concentrations were increased by fasting and were reduced by re-feeding or oral glucose administration, but not by water ingestion.
		Ghrelin as a brain-gut peptide, in addition to its role in regulating GH secretion, enable to involve in regulation of food intake and body weight.
	cmbi.bjmu.edu.cn /peptide-cn3d/Ghrelin.files/Ghrelin.htm (262 words)

	ghrelin
		Experiments on rats and mice found ghrelin to be a powerful appetite stimulant; rodents given the hormone immediately began feeding.
		The researchers found that ghrelin rose sharply before meals and fell shortly after meals, confirming earlier studies showing that it triggers the desire to eat.
		In fact, their lowest ghrelin levels after the diet-induced weight loss were nearly as high as the pre-meal peaks at the start of the study.
	www.cbass.com /Ghrelin.htm (1166 words)

	What is Ghrelin?
		Ghrelin is also found in smaller amounts in the pituitary gland, hypothalamus, kidney, and placenta.
		Ghrelin is known to encourage the secretion of growth hormones from the anterior pituitary gland.
		Ghrelin is also responsible for stimulating the appetite and has been found to increase the appetite before eating and to decrease it afterward.
	www.wisegeek.com /what-is-ghrelin.htm (345 words)

	ghrelin
		Ghrelin has been found to be "3-fold higher in seven adult individuals with PWS than in healthy controls".(High Circulating Ghrelin: A Potential Cause for Hyperphagia and Obesity in Prader-Willi Syndrome.
		Because ghrelin affects appetite as well as GH secretion, and both are abnormal in PWS, it has been hypothesized that this condition might involve ghrelin dysregulation.
		Tests have done have shown that after overnight fasting, ghrelin levels were 4.5-fold higher in PWS subjects than in other equally obese subjects, and 2.5-fold higher than in lean controls.
	www.pwsa-nz.co.nz /ghrelin.html (392 words)

	The Hunger Hormone, Controlling Ghrelin May Be Key To Curing Obesity - CBS News
		”Ghrelin is the first and only yet-described appetite-stimulating hormone,”; says Cummings, explaining that ghrelin is mainly created in the stomach, where it circulates in the blood, eventually sending a message to the brain to stimulate appetite.
		The evidence on ghrelin and PYY has so convinced Bloom that he’s practically given up on the common prescription of “eat less, exercise more.” He now says obesity has to be treated like any other illness, with medication.
		The fact that ghrelin is manufactured in the stomach, not in a riskier area like the brain, makes researchers hopeful that they can come up with a blocker.
	www.cbsnews.com /stories/2003/03/11/60II/main543614.shtml (1983 words)

	Disparities in ghrelin levels may explain racial differences in obesity rates
		Ghrelin is a hormone released primarily in the stomach, which is thought to trigger hunger.
		Ghrelin levels increase dramatically before a meal and then are suppressed for about three hours after eating a meal.
		The study showed that ghrelin levels after the meal were significantly higher among fl women versus white women, even after they controlled for the women's body mass index (BMI, a measure of weight in relation to height used to indicate obesity).
	www.onhealth.com /script/main/art.asp?articlekey=55774 (582 words)

	Ghrelin (Site not responding. Last check: 2007-09-10)
		Ghrelin is a hormone that binds to a similar receptor as growth hormone.
		Ghrelin concentrations are higher during starvation and increase with weight loss.
		While the study was small, involving only 13 PWS subjects, it found that fasting ghrelin levels were three- to four-fold higher in children with PWS, compared to both normal weight children and children with various reasons for obesity.
	www.pwsausa.org /research/ghrelin.htm (290 words)

	Still Hungry?: Science News Online, April 2, 2005
		Ghrelin response to carbohydrate-enriched breakfast is related to insulin.
		Effects of ghrelin on the insulin and glycemic responses to glucose, arginine, or free fatty acids load in humans.
		Ghrelin, peptide YY, glucose-dependent insulinotropic polypeptide, and hunger responses to a mixed meal in anorexic, obese and control female adolescents.
	www.sciencenews.org /articles/20050402/bob9.asp (2946 words)

	eBooks.com - Ghrelin eBook
		Ghrelin is a 28-amino acid acylated peptide predominantly produced by the stomach.
		Ghrelin also acts on other central and peripheral receptors and enables other actions including: stimulation of lactotroph and corticotroph secretion; food-intake; gastro-entero-pancreatic functions; metabolic; cardiovascular activity; and anti-proliferative effects.
		This volume aims to highlight the impact and function of the hormone ghrelin and provide insight to neuroendocrinologies and researchers interested in its molecular and clinical relevance.
	www.ebooks.com /cj.asp?IID=225992 (286 words)

	News: Elixir Pharmaceuticals Presents New Data Highlighting Ghrelin Inhibition as a Potential Method for Regulating ...
		Ghrelin is a key metabolic regulator that is known to stimulate appetite and food consumption and is believed to play a key role in metabolism and energy storage.
		Ghrelin is a naturally occurring hormone secreted by the stomach, which acts primarily at the level of the hypothalamus in the brain.
		These data suggest the inhibition of ghrelin receptor signaling blocks the development of insulin resistance in mice fed with a high-fat diet and could represent a therapeutic strategy to improve glucose homeostasis in Type 2 diabetics.
	www.genengnews.com /news/bnitem.aspx?name=11462454 (847 words)

	Helicobacter pylori infection modifies gastric and plasma ghrelin dynamics in Mongolian gerbils -- Suzuki et al. 53 ...
		Ghrelin is a growth-hormone-releasing acylated peptide from stomach.
		Ghrelin, a novel growth hormone-releasing acylated peptide, is synthesized in a distinct endocrine cell type in the gastrointestinal tracts of rats and humans.
		Structure-function studies on the new growth hormone-releasing peptide, ghrelin: minimal sequence of ghrelin necessary for activation of growth hormone secretagogue receptor 1a.
	gut.bmjjournals.com /cgi/content/full/53/2/187 (4418 words)

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