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NSAID-Induced Enteropathy Affects Regulation of Hepatic Glucose Production by Decreasing GLP-1 Secretion
Hussein Herz1, Yang Song1, Yuanchao Ye1
1Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA.
Background/Aim:
Given their widespread use and their notorious effects on the lining of gut cells, including the enteroendocrine cells, we explored if chronic exposure to non-steroidal anti-inflammatory drugs (NSAIDs) affects metabolic balance in a mouse model of NSAID-induced enteropathy.
Method:
We administered variable NSAIDs to C57Blk/6J mice through intragastric gavage and measured their energy balance, glucose hemostasis, and GLP-1 levels. We treated them with Exendin-9 and Exendin-4 and ran a euglycemic-hyperinsulinemic clamp.
Results:
Chronic administration of multiple NSAIDs to C57Blk/6J mice induces ileal ulcerations and weight loss in animals consuming a high-fat diet. Despite losing weight, NSAID-treated mice exhibit no improvement in their glucose tolerance. Furthermore, glucose-stimulated (glucagon-like peptide -1) GLP-1 is significantly attenuated in the NSAID-treated groups. In addition, Exendin-9-a GLP-1 receptor antagonist-worsens glucose tolerance in the control group but not in the NSAID-treated group. Finally, the hyper-insulinemic euglycemic clamp study shows that endogenous glucose production, total glucose disposal, and their associated insulin levels were similar among an ibuprofen-treated group and its control. Exendin-4, a GLP-1 receptor agonist, reduces insulin levels in the ibuprofen group compared to their controls for the same glucose exchange rates.
Conclusions:
Chronic NSAID use can induce small intestinal ulcerations, which can affect intestinal GLP-1 production, hepatic insulin sensitivity, and consequently, hepatic glucose production.
Insights
Chronic non-steroidal anti-inflammatory drug (NSAID) use causes gut damage and weight loss in mice. This impairs glucose regulation and reduces glucagon-like peptide-1 (GLP-1) levels, impacting metabolic health.
Area of Science:
- Gastroenterology
- Endocrinology
- Metabolic Research
Background:
- Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used but can damage gut cells, including enteroendocrine cells.
- NSAID-induced enteropathy is a known condition affecting the gastrointestinal tract.
Purpose of the Study:
- To investigate the effects of chronic NSAID exposure on metabolic balance in a mouse model.
- To determine if NSAIDs impact energy balance, glucose homeostasis, and GLP-1 levels.
Main Methods:
- C57Blk/6J mice were administered NSAIDs via intragastric gavage.
- Measurements included energy balance, glucose tolerance, and glucagon-like peptide-1 (GLP-1) levels.
- Pharmacological interventions with a GLP-1 receptor antagonist (Exendin-9) and agonist (Exendin-4) were employed, alongside euglycemic-hyperinsulinemic clamps.
Main Results:
- Chronic NSAID administration led to ileal ulcerations and weight loss in mice on a high-fat diet.
- NSAID-treated mice showed impaired glucose tolerance and significantly attenuated glucose-stimulated GLP-1 levels.
- GLP-1 receptor antagonism worsened glucose tolerance in controls but not NSAID-treated mice; Exendin-4 modulated insulin levels in ibuprofen-treated mice.
Conclusions:
- Chronic NSAID use can cause small intestinal ulcerations, affecting GLP-1 production.
- These changes impact hepatic insulin sensitivity and glucose production.
- NSAID-induced enteropathy may contribute to metabolic dysregulation.
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