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Published on: March 17, 2023
Direct effects of adipokines on the heart: focus on adiponectin
1Department of Biology, York University, Toronto, ON, M3J 1P3, Canada.
Abstract:
Cardiovascular disease, including heart failure, is a principal cause of death in individuals with obesity and diabetes. However, the mechanisms of obesity- and diabetes-induced heart disease are multifaceted and remain to be clearly defined. Of relevance to this review, there is currently great research and clinical interest in the endocrine effects of adipokines on the myocardium and their role in heart failure. We will discuss the potential significance of adipokines in the pathogenesis of heart failure via their ability to regulate remodeling events including metabolism, hypertrophy, fibrosis, and cell death. As an excellent example, we will first focus on adiponectin which is best known to confer numerous cardioprotective effects. However, we comprehensively discuss the existing literature that highlights it would be naive to assume that this was always the case. We also focus on lipocalin-2 which mediates pro-inflammatory and pro-apoptotic effects. It is important when studying actions of adipokines to integrate cellular and mechanistic analyses and translate these to physiologically relevant in vivo models and clinical studies. However, assimilating studies on numerous cardiac remodeling events which ultimately dictate cardiac dysfunction into a unifying conclusion is challenging. Nevertheless, there is undoubted potential for the use of adipokines as robust biomarkers and appropriate therapeutic targets in heart failure.
Insights
Adipokines, signaling molecules from fat tissue, play a complex role in obesity- and diabetes-related heart failure by influencing cardiac remodeling. Understanding these adipokines offers potential for new heart failure biomarkers and therapies.
Area of Science:
- Endocrinology
- Cardiology
- Metabolic disease
Background:
- Obesity and diabetes are leading causes of death, often involving cardiovascular disease, particularly heart failure.
- The precise mechanisms linking obesity and diabetes to heart disease are complex and require further elucidation.
- Adipokines, hormones secreted by adipose tissue, are increasingly recognized for their endocrine effects on the heart.
Purpose of the Study:
- To review the role of adipokines in the pathogenesis of heart failure.
- To explore how adipokines regulate cardiac remodeling processes such as metabolism, hypertrophy, fibrosis, and cell death.
- To examine the therapeutic potential and biomarker utility of adipokines in heart failure.
Main Methods:
- Comprehensive review of existing scientific literature on adipokines and heart failure.
- Analysis of cellular and mechanistic studies on adipokine actions in the myocardium.
- Integration of findings from in vivo models and clinical studies.
Main Results:
- Adiponectin, while often cardioprotective, can have complex effects in heart failure.
- Lipocalin-2 exhibits pro-inflammatory and pro-apoptotic properties relevant to cardiac dysfunction.
- Adipokines significantly influence key cardiac remodeling events contributing to heart failure.
Conclusions:
- Adipokines are critical mediators in the development of heart failure associated with obesity and diabetes.
- Further research integrating mechanistic and clinical data is needed to fully understand adipokine roles.
- Adipokines hold promise as both diagnostic biomarkers and therapeutic targets for heart failure management.
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