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[Adiponectin: from adipocyte to skeletal muscle]
1INSERM U465, Centre de Recherches Biomédicales des Cordeliers, F-75270 Paris Cedex 06. pferre@bhdc.jussieu.fr
Annales D'Endocrinologie
|May 28, 2004
Summary
Insulin resistance impairs glucose uptake and production. Adiponectin, secreted by adipose tissue, enhances insulin sensitivity by stimulating fatty acid oxidation, crucial for managing type 2 diabetes.
Area of Science:
- Endocrinology
- Metabolic Syndrome
- Molecular Biology
Context:
- Insulin resistance is a core feature of metabolic disorders like type 2 diabetes.
- Skeletal muscle insulin resistance is critical and linked to elevated fatty acids.
- Adipose tissue functions as an endocrine organ regulating fatty acid release and adiponectin secretion.
Purpose:
- To review the role of adipose tissue and adiponectin in insulin resistance.
- To explore the mechanisms by which adiponectin improves insulin sensitivity.
- To discuss the influence of thiazolidinediones on adiponectin and PPARgamma.
Summary:
- Insulin resistance involves impaired glucose uptake and hepatic glucose production.
- Adipose tissue releases adiponectin, which enhances insulin sensitivity in muscle and liver by promoting fatty acid oxidation.
- AMP-activated protein kinase (AMPK) is a key target of adiponectin's metabolic actions.
Impact:
- Adiponectin is a key regulator of glucose and lipid metabolism.
- Understanding adiponectin's role is vital for managing obesity, glucose intolerance, and type 2 diabetes.
- This review highlights the interplay between insulin resistance, adipose tissue, adiponectin, and PPARgamma.