Glucagon Modulation of Ghrelin Secretion

Summary

As a counterregulatory hormone for insulin, glucagon plays a critical role in maintaining glucose homeostasis in vivo. It is well known that intramuscular glucagon administration stimulates growth hormone (GH), adrenocorticotropic hormone (ACTH) and cortisol release in humans. Recently, it has been shown that glucagon induces a remarkable decrease in ghrelin levels. The mechanisms underlying this effect are unclear and the role of changes in glucose, insulin, glucagon-like peptide-1 (GLP-1) and catecholamines are widely discussed. The aim of the present study is to further evaluate the effect of glucagon on ghrelin secretion and the possible role of the above mentioned factors in mediating this effect.

Timeline

Start

2006-06

Primary completion

2008-01

Completion

2009-12

Publications

• Background Arafat AM, Perschel FH, Otto B, Weickert MO, Rochlitz H, Schofl C, Spranger J, Mohlig M, Pfeiffer AF. Glucagon suppression of ghrelin secretion is exerted at hypothalamus-pituitary level. J Clin Endocrinol Metab. 2006 Sep;91(9):3528-33. doi: 10.1210/jc.2006-0225. Epub 2006 Jun 20.
• Arafat AM, Weickert MO, Adamidou A, Otto B, Perschel FH, Spranger J, Mohlig M, Pfeiffer AF. The impact of insulin-independent, glucagon-induced suppression of total ghrelin on satiety in obesity and type 1 diabetes mellitus. J Clin Endocrinol Metab. 2013 Oct;98(10):4133-42. doi: 10.1210/jc.2013-1635. Epub 2013 Aug 21.

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Indications