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Updated: Jul 19, 2026
06:31
Identification and Dissection of Diverse Mouse Adipose Depots
Published on: July 11, 2019
Adipose tissue as an endocrine organ.
1University of Pennsylvania School of Medicine, Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Philadelphia, PA 19104, USA. ahima@mail.med.upenn.edu
Obesity (Silver Spring, Md.)
|October 6, 2006
Summary
Adipose tissue hormones like leptin and adiponectin regulate energy balance and metabolism. Dysregulation contributes to obesity and metabolic disorders, highlighting their therapeutic potential.
Area of Science:
- Endocrinology
- Metabolism
- Neuroendocrinology
Background:
- Adipose tissue is crucial for energy homeostasis, secreting adipokines that influence feeding, thermogenesis, and neuroendocrine functions.
- Leptin signals satiety and regulates appetite, energy expenditure, and hormone secretion, while adiponectin impacts glucose, lipid, and cardiovascular health.
- Obesity is linked to leptin resistance and reduced adiponectin levels, contributing to metabolic dysfunction.
Purpose of the Study:
- To elucidate the roles of leptin and adiponectin in energy homeostasis and metabolic regulation.
- To understand the signaling pathways and central/peripheral actions of these key adipokines.
- To explore the therapeutic potential of targeting these adipokines for metabolic disorders.
Main Methods:
- Review of signaling pathways, including JAK2/STAT3 for leptin and AMPK activation for adiponectin.
- Analysis of central and peripheral actions of leptin and adiponectin on appetite, metabolism, and hormone axes.
- Investigation of the role of the melanocortin pathway in mediating adipokine effects.
Main Results:
- Leptin resistance in obesity involves suppressor of cytokine signaling-3, impairing satiety signals.
- Leptin and adiponectin activate AMP-activated protein kinase (AMPK), influencing glucose and lipid metabolism.
- Adiponectin administration improves metabolic parameters, partly via central melanocortin pathways and AMPK activation.
Conclusions:
- Leptin and adiponectin are critical regulators of energy balance and metabolism with distinct and overlapping mechanisms.
- Dysregulation of these adipokines contributes to obesity and associated metabolic diseases.
- Targeting leptin and adiponectin pathways, particularly involving AMPK, holds promise for treating metabolic disorders.
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