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Mechanisms Underlying Gut Hormone Secretion Using the Isolated Perfused Rat Small Intestine
Published on: February 26, 2019
The pathophysiologic role of incretins
1Division of Endocrinology and Metabolism at the Philadelphia College of Osteopathic Medicine, 4190 City Ave, Suite 324, Philadelphia, PA 19131-1626, USA. jeffreyfreemando@aol.com
Insights
Many type 2 diabetes patients struggle with glycemic control. New incretin mimetics and dipeptidyl peptidase IV inhibitors improve blood sugar and HbA1c levels, offering a promising treatment option.
Area of Science:
- Endocrinology
- Pharmacology
- Metabolic Diseases
Background:
- Type 2 diabetes mellitus (T2DM) affects millions, with many failing to reach glycemic targets.
- The American Diabetes Association recommends a hemoglobin A1c (HbA1c) below 7% for optimal T2DM management.
- Incretins, like GLP-1 and GIP, are crucial for insulin secretion but are rapidly degraded.
Purpose of the Study:
- To evaluate the role of incretin mimetics and dipeptidyl peptidase IV (DPP-IV) inhibitors in T2DM treatment.
- To assess the impact of these agents on glycemic control and HbA1c levels.
Main Methods:
- Review of incretin mimetic and DPP-IV inhibitor mechanisms of action.
- Analysis of clinical data on glycemic profiles and HbA1c changes post-administration.
Main Results:
- Incretin mimetics and DPP-IV inhibitors enhance incretin activity by preventing degradation.
- Administration of these drugs leads to improved postprandial glucose levels.
- Significant improvements in overall HbA1c were observed in patients treated with these agents.
Conclusions:
- Incretin mimetics and DPP-IV inhibitors represent a valuable therapeutic class for T2DM.
- These medications offer a clinically significant approach to achieving better glycemic control in T2DM patients.
Abstract:
Many patients with type 2 diabetes mellitus (T2DM) are unable to achieve adequate glycemic control. Of the approximately 19 million individuals with T2DM in the United States, only about a third achieve the hemoglobin A(1c) (HbA(1c)0 goal set forth by the American Diabetes Association (HbA(1c) <7% [6% if it can be achieved safely]). The incretin mimetics are a new class of medications available for treating patients with T2DM. They mimic the action of incretins, which are peptide hormones that originate in the gastrointestinal tract. The two major incretins in humans are glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP). These hormones are released during nutrient absorption, augmenting insulin secretion. However, incretins are susceptible to degradation by dipeptidyl peptidase IV (DPP-IV). Dipeptidyl peptidase IV inhibitors suppress the degradation of incretins, thus extending the activity of GLP-1 and GIP. The glycemic profiles of patients after administration of incretin mimetics and DPP-IV inhibitors show improvement in postprandial glucose levels and ultimately in HbA(1c). Therefore, incretin mimetics and DPP-IV inhibitors may play a clinically significant role in the treatment of patients with T2DM.
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