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Published on: June 11, 2012
Potential approaches to prevent hypoglycemia-associated autonomic failure
Eric Lontchi-Yimagou1, Jee Young You1, Michelle Carey1,2
1Diabetes Research and Training Center, Albert Einstein College of Medicine, Bronx, New York, USA.
Abstract:
Clear health benefits are associated with intensive glucose control in type 1 diabetes mellitus (T1DM). However, maintaining near-normal glycemia remains an elusive goal for many patients, in large part owing to the risk of severe hypoglycemia. In fact, recurrent episodes of hypoglycemia lead to 'hypoglycemia-associated autonomic failure' (HAAF), characterized by defective counter-regulatory responses to hypoglycemia. Extensive studies to understand the mechanisms underlying HAAF have revealed multiple potential etiologies, suggesting various approaches to prevent the development of HAAF. In this review, we present an overview of the literature focused on pharmacological approaches that may prevent the development of HAAF. The purported underlying mechanisms of HAAF include: 1) central mechanisms (opioid receptors, ATP-sensitive K+(KATP) channels, adrenergic receptors, serotonin selective receptor inhibitors, γ-aminobuyric acid receptors, N-methyl D-aspartate receptors); 2) hormones (cortisol, estrogen, dehydroepiandrosterone (DHEA) or DHEA sulfate, glucagon-like peptide-1) and 3) nutrients (fructose, free fatty acids, ketones), all of which have been studied vis-à-vis their ability to impact the development of HAAF. A careful review of the current literature reveals many promising therapeutic approaches to treat or reduce this important limitation to optimal glycemic control.
Insights
Intensive glucose control in type 1 diabetes mellitus (T1DM) is beneficial but risks severe hypoglycemia. Pharmacological strategies targeting mechanisms of hypoglycemia-associated autonomic failure (HAAF) show promise for preventing this complication.
Area of Science:
- Endocrinology
- Metabolic Disorders
- Neuroscience
Background:
- Intensive glycemic control in type 1 diabetes mellitus (T1DM) offers significant health benefits.
- Severe hypoglycemia is a major barrier to achieving optimal glycemic control in T1DM.
- Recurrent hypoglycemia can lead to hypoglycemia-associated autonomic failure (HAAF), impairing the body's response to low blood sugar.
Purpose of the Study:
- To review pharmacological approaches for preventing hypoglycemia-associated autonomic failure (HAAF) in type 1 diabetes mellitus (T1DM).
- To explore the underlying mechanisms of HAAF, including central, hormonal, and nutrient-related pathways.
Main Methods:
- Literature review of studies investigating mechanisms of HAAF.
- Analysis of pharmacological interventions targeting identified HAAF pathways.
- Examination of the impact of various receptors, hormones, and nutrients on HAAF development.
Main Results:
- HAAF involves complex central mechanisms (e.g., opioid, KATP, adrenergic receptors) and hormonal factors (e.g., cortisol, estrogen, GLP-1).
- Nutrient-related factors like fructose, free fatty acids, and ketones also play a role in HAAF.
- Multiple therapeutic targets and strategies have been identified in the literature.
Conclusions:
- Pharmacological interventions targeting the diverse mechanisms of HAAF present promising avenues for preventing impaired counter-regulation in T1DM.
- Addressing HAAF is crucial for enabling safer and more effective intensive glucose control in T1DM patients.
- Further research into these pharmacological approaches may reduce a significant limitation to optimal glycemic management.
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