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Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
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GPCRs Regulate Adenylyl Cylase Activity01:09

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Related Experiment Video

Updated: May 11, 2026

A RAPID Method for Blood Processing to Increase the Yield of Plasma Peptide Levels in Human Blood
11:36

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Published on: April 28, 2016

Ghrelin as a GH-releasing factor.

M C Carreira1, A B Crujeiras, S Andrade

  • 1CIBER de Fisiopatologia Obesidad y Nutricion CB06/03, Instituto Salud Carlos III, Complejo Hospitalario Universitario de Santiago CHUS, Santiago de Compostela, Spain.

Endocrine Development
|May 9, 2013
PubMed
Summary
This summary is machine-generated.

Ghrelin, a gastric peptide, plays a role in regulating pulsatile growth hormone (GH) secretion. This review explores ghrelin

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Area of Science:

  • Endocrinology
  • Neuroendocrinology
  • Molecular Biology

Background:

  • Growth hormone (GH) secretion by the pituitary gland is pulsatile and primarily hypothalamus-controlled.
  • Hypothalamic regulation involves GHRH and somatostatin, but peripheral factors also modulate GH release.
  • Ghrelin, a gastric peptide, acts as the natural ligand for the GH secretagogue receptor type 1a (GHS-R1a).

Purpose of the Study:

  • To review current data on ghrelin's role in regulating GH secretion.
  • To explore the potential therapeutic applications of ghrelin.

Main Methods:

  • Literature review of studies investigating ghrelin and GH regulation.
  • Analysis of physiological and molecular mechanisms involved.

Main Results:

  • Ghrelin significantly influences GH secretion, adding a new dimension to its regulation.
  • Ghrelin's interaction with GHS-R1a clarifies previously unexplained aspects of GH pulsatility.

Conclusions:

  • Ghrelin is a key regulator of GH secretion.
  • Ghrelin holds promise as a potential therapeutic agent for conditions related to GH deficiency or excess.