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Adiponectin and atherosclerotic disease
Kazunori Shimada1, Tetsuro Miyazaki, Hiroyuki Daida
1Department of Cardiology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-k, Tokyo 113-8421, Japan. shimakaz@med.juntendo.ac.jp
Summary
Adiponectin, a fat-derived hormone, protects against atherosclerosis by reducing inflammation. Lower adiponectin levels are linked to obesity, type 2 diabetes, and coronary artery disease, suggesting its therapeutic potential.
Area of Science:
- Endocrinology
- Cardiovascular Science
- Metabolic Research
Background:
- Adiponectin is an adipocytokine secreted by adipose tissue into circulation.
- It exhibits anti-inflammatory and anti-atherogenic properties, crucial for cardiovascular health.
- Reduced adiponectin levels are observed in obesity, type 2 diabetes, and coronary artery disease (CAD).
Purpose of the Study:
- To explore the role of adiponectin in atherosclerosis.
- To understand the relationship between adiponectin, obesity, type 2 diabetes, and insulin resistance.
- To investigate adiponectin's therapeutic potential in cardiovascular disease.
Main Methods:
- Review of existing literature on adiponectin's biological functions and clinical associations.
- Analysis of the correlation between adiponectin and C-reactive protein (CRP) in CAD patients.
- Examination of molecular mechanisms involving adiponectin, tumor necrosis factor-alpha, and insulin resistance.
Main Results:
- Adiponectin demonstrates protective effects against atherosclerosis initiation and progression.
- Adiponectin levels negatively correlate with CRP levels in CAD patients.
- Adiponectin and tumor necrosis factor-alpha reciprocally regulate each other's expression in adipocytes.
- Insulin-sensitizing drugs (thiazolidinediones) enhance adiponectin production by increasing gene expression.
Conclusions:
- Adiponectin plays a vital role in the interplay between obesity, type 2 diabetes, and insulin resistance.
- The globular domain of adiponectin is key to its anti-atherosclerotic effects.
- Adiponectin receptors (AdipoR1 and AdipoR2) are widely distributed, with specific enrichment in skeletal muscle and liver.
- Adiponectin represents a promising therapeutic target for reducing cardiovascular morbidity and mortality.