Myocardial Calcium Handling in Type 2 Diabetes: A Novel Therapeutic Target
Abhishek Dattani1, Anvesha Singh1, Gerry P McCann1
1Department of Cardiovascular Sciences, University of Leicester and NIHR Leicester Biomedical Research Centre, Leicester LE3 9QP, UK.
Abstract:
Type 2 diabetes (T2D) is a multisystem disease with rapidly increasing global prevalence. Heart failure has emerged as a major complication of T2D. Dysregulated myocardial calcium handling is evident in the failing heart and this may be a key driver of cardiomyopathy in T2D, but until recently this has only been demonstrated in animal models. In this review, we describe the physiological concepts behind calcium handling within the cardiomyocyte and the application of novel imaging techniques for the quantification of myocardial calcium uptake. We take an in-depth look at the evidence for the impairment of calcium handling in T2D using pre-clinical models as well as in vivo studies, following which we discuss potential novel therapeutic approaches targeting dysregulated myocardial calcium handling in T2D.
Insights
Type 2 diabetes (T2D) leads to heart failure through impaired myocardial calcium handling. This review explores T2D cardiomyopathy mechanisms and novel therapeutic targets for calcium dysregulation.
Area of Science:
- Cardiology
- Endocrinology
- Molecular Biology
Background:
- Type 2 diabetes (T2D) is a global health crisis with rising prevalence.
- Heart failure is a significant complication of T2D, impacting patient outcomes.
- Myocardial calcium handling is implicated in T2D-associated cardiomyopathy.
Purpose of the Study:
- To review the physiological basis of cardiomyocyte calcium handling.
- To examine novel imaging techniques for quantifying myocardial calcium uptake.
- To synthesize evidence on impaired calcium handling in T2D and discuss therapeutic strategies.
Main Methods:
- Literature review of physiological concepts in cardiomyocyte calcium handling.
- Analysis of pre-clinical models and in vivo studies on T2D.
- Discussion of emerging therapeutic approaches targeting myocardial calcium.
Main Results:
- Cardiomyopathy in T2D is linked to dysregulated myocardial calcium handling.
- Evidence for impaired calcium handling in T2D is supported by pre-clinical and in vivo data.
- Novel imaging techniques aid in quantifying myocardial calcium uptake.
Conclusions:
- Dysregulated myocardial calcium handling is a key mechanism in T2D cardiomyopathy.
- Targeting calcium handling pathways presents a promising therapeutic avenue for T2D complications.
- Further research is needed to translate these findings into clinical practice.
Related Concept Videos
Diabetes: Management and Pharmacotherapy
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
Antihypertensive Drugs: Action of Calcium Channel Blockers
Antianginal Drugs: Calcium Channel Blockers and Ranolazine
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
Diabetes Mellitus: Type 2 and Gestational
Carbohydrate Metabolism
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
Diabetes Mellitus: Overview and Type I Subtype
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...


