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Updated: Jun 20, 2026
06:31
Identification and Dissection of Diverse Mouse Adipose Depots
Published on: July 11, 2019
Adipose tissue as an endocrine organ
Sandra Galic1, Jon S Oakhill, Gregory R Steinberg
1St. Vincent's Institute of Medical Research and Department of Medicine, University of Melbourne, Melbourne, Victoria, Australia.
Molecular and Cellular Endocrinology
|September 3, 2009
Summary
Adipose tissue secretes adipokines like leptin and adiponectin, crucial for regulating metabolism and insulin sensitivity. Obesity disrupts these signals, contributing to insulin resistance and inflammation.
Area of Science:
- Endocrinology
- Metabolic Syndrome
- Adipose Tissue Biology
Background:
- Obesity is linked to insulin resistance in skeletal muscle and liver.
- Adipose tissue functions as an endocrine organ, secreting signaling molecules.
- Key adipokines include leptin, adiponectin, resistin, and retinol-binding protein-4.
Purpose of the Study:
- To explore the role of adipokines in regulating whole-body metabolism.
- To understand the contribution of adipose tissue and resident macrophages to metabolic dysfunction.
- To investigate the link between adipokines, inflammation, and insulin resistance.
Main Methods:
- Review of existing literature on adipokines and obesity.
- Analysis of the functions of leptin, adiponectin, resistin, and retinol-binding protein-4.
- Examination of the role of macrophage-derived cytokines in obesity-induced inflammation.
Main Results:
- Leptin regulates energy expenditure and appetite but often shows resistance in obesity.
- Adiponectin levels decrease in obesity, impairing insulin sensitivity and energy expenditure.
- Obesity is associated with increased resistin and retinol-binding protein-4, linked to insulin resistance.
- Macrophage-derived inflammatory cytokines (TNF-alpha, IL-6) contribute to a chronic inflammatory state and insulin resistance.
Conclusions:
- Adipokines are central to energy metabolism control, signaling nutrient status.
- Dysregulation of adipokines in obesity contributes significantly to insulin resistance and diabetes.
- Adipose tissue and its resident macrophages play a critical role in metabolic health and disease.
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