Ghrelin, appetite and gastric electrical stimulation

Area of Science:

• Endocrinology
• Gastroenterology
• Neuroscience

Background:

• Ghrelin, a peptide hormone primarily from the stomach, stimulates appetite and has broad physiological roles.
• Stimulating the ghrelin system is a therapeutic strategy for conditions with low appetite or deficient ghrelin signaling.
• Current strategies include pharmacological agents and enhancing endogenous ghrelin production.

Purpose of the Study:

• To review the relationship between gastric electrical stimulation (GES) and ghrelin.
• To explore the potential of GES as a non-pharmacological approach to improve ghrelin secretion.
• To discuss GES applications in conditions like anorexia nervosa and anorexia-cachexia syndrome.

Main Methods:

• Review of existing experimental and clinical data on GES.
• Analysis of studies investigating GES effects on ghrelin production and signaling.
• Examination of the role of ghrelin-reactive immunoglobulins in GES-modulated ghrelin signaling.

Main Results:

• Gastric electrical stimulation (GES) with specific parameters has been shown to increase ghrelin production in animal models.
• Emerging evidence suggests GES may influence ghrelin-reactive immunoglobulins, potentially modulating ghrelin signaling.
• GES is utilized in clinical settings for gastroparesis, functional dyspepsia, and obesity.

Conclusions:

• GES shows promise as a non-pharmacological method to enhance ghrelin secretion.
• Further research is warranted to establish GES efficacy for improving appetite in conditions like anorexia nervosa and anorexia-cachexia syndrome.
• The interplay between GES, ghrelin, and the immune system requires additional investigation.