Developments in ghrelin biology and potential clinical relevance

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Abstract

The spiropiperidine, MK0677, has been exploited to characterize and expression clone the growth hormone secretagogue receptor (GHS-R). Cloning of this receptor led to identification of its natural ligands, ghrelin and adenosine. Targeted disruption of the Ghsr gene demonstrated unambiguously that the GH-releasing and orexigenic properties of ghrelin are dependent on Ghsr expression and that the orexigenic signal is mediated through neuropeptide Y and agouti-related peptide neurons. This review summarizes new developments in our understanding of the physiological roles of ghrelin and its receptor (GHS-R). Recent discoveries of the effects of ghrelin on the thymus and proinflammatory and chemotactic cytokine pathways stimulate renewed interest in potential clinical applications, which include age-associated disorders, such as metabolic disease, sarcopenia, congestive heart failure, atherosclerosis and anorexia.

Original languageEnglish
Pages (from-to)436-442
Number of pages7
JournalTrends in Endocrinology and Metabolism
Volume16
Issue number9
DOIs
StatePublished - Nov 2005
Externally publishedYes

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