Cited by 27Adipokines, Inflammation, and Metabolic DiseasesRegulation of Appetite and ObesityDiabetes Treatment and Management

Blockade of gastric inhibitory polypeptide (GIP) action as a novel means of countering insulin resistance in the treatment of obesity-diabetes

Open access
Irwin, Nigel, Gault, Victor A., O’Harte, Finbarr P.M., Flatt, Peter R.·2020·Peptides

Abstract

Gastric inhibitory polypeptide (GIP) is a 42 amino acid hormone secreted from intestinal K-cells in response to nutrient ingestion. Despite a recognised physiological role for GIP as an insulin secretagogue to control postprandial blood glucose levels, growing evidence reveals important actions of GIP on adipocytes and promotion of fat deposition in tissues. As such, blockade of GIP receptor (GIPR) action has been proposed as a means to counter insulin resistance, and improve metabolic status in obesity and related diabetes. In agreement with this, numerous independent observations in animal models support important therapeutic applications of GIPR antagonists in obesity-diabetes. Sustained administration of peptide-based GIPR inhibitors, low molecular weight GIPR antagonists, GIPR neutralising antibodies as well as genetic knockout of GIPR's or vaccination against GIP all demonstrate amelioration of insulin resistance and reduced body weight gain in response to high fat feeding. These observations were consistently associated with decreased accumulation of lipids in peripheral tissues, thereby alleviating insulin resistance. Although the impact of prolonged GIPR inhibition on bone turnover still needs to be determined, evidence to date indicates that GIPR antagonists represent an exciting novel treatment option for obesity-diabetes.

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Crossref · 10.1016/j.peptides.2019.170203

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Authors
Irwin, N., Gault, V. A., O’Harte, F. P. M., & Flatt, P. R.
Affiliations
University of Ulster (GB)
Corresponding author
Irwin, Nigel
Venue
Peptides
Publisher
Elsevier BV
Published
2020-03
Volume
125
Pages
170203
ISSN
0196-9781 (ISSN-L)
OpenAlex
W2989467600
Cited by
27
References
119
Citations by year
2026: 1 · 2025: 4 · 2024: 6 · 2023: 3 · 2022: 3 · 2021: 7 · 2019: 2
FWCI
0.44
Type
journal article
Language
en
Open access
Locations
  • Peptides (publishedVersion)
  • PubMed (publishedVersion)
  • Ulster University Research Portal (Ulster University) (submittedVersion, other-oa)
Funders
  • Diabetes UK
  • European Foundation for the Study of Diabetes
  • Invest Northern Ireland
  • Irish Endocrine Society
  • SAAD Trading and Contracting Company
  • Department for the Economy (DfE) Northern Ireland
  • Diabetes Research & Wellness Foundation
  • University of Ulster strategic research funding
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
glucose-dependent insulinotropic polypeptide, GIP receptor antagonist, insulin resistance, obesity, type 2 diabetes, adipocytes, fat deposition, insulin secretion, high-fat feeding, bone turnover
MeSH terms
Animals, Blood Glucose, Diabetes Mellitus, Type 2, Gastric Inhibitory Polypeptide, Humans, Insulin, Insulin Resistance, Obesity, Receptors, Gastrointestinal Hormone, Weight Loss

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