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The endocrine function of adipose tissue: an update.
Tiziana Ronti1, Graziana Lupattelli, Elmo Mannarino
1Internal Medicine, Angiology and Atherosclerosis, Department of Clinical and Experimental Medicine, University of Perugia, Italy.
Clinical Endocrinology
|April 6, 2006
Summary
Adipokines, bioactive peptides from fat tissue, influence many bodily functions. In obesity, altered adipokine levels contribute to insulin resistance and cardiovascular disease, but understanding them may lead to new therapies.
Area of Science:
- Endocrinology
- Metabolic Syndrome
- Cardiovascular Disease Pathophysiology
Background:
- Adipose tissue produces adipokines, bioactive peptides with local and systemic effects.
- Obesity alters adipokine production, impacting appetite, immunity, insulin sensitivity, and cardiovascular health.
- Key adipokines like TNF-alpha, IL-6, angiotensinogen, and PAI-1 are linked to obesity-related complications.
Purpose of the Study:
- To review the role of adipokines in obesity and related metabolic and cardiovascular diseases.
- To highlight the impact of altered adipokine levels on insulin resistance, hypertension, and lipid metabolism.
- To discuss potential therapeutic strategies targeting adipokines for atherosclerosis prevention in obese individuals.
Main Methods:
- Literature review of studies on adipokines, obesity, and cardiovascular disease.
- Analysis of the molecular actions and physiological effects of various adipokines.
- Examination of interventions, such as weight loss and pharmacotherapy, on adipokine profiles.
Main Results:
- Increased levels of TNF-alpha and IL-6 correlate with obesity-related insulin resistance.
- Angiotensinogen and PAI-1 are implicated in hypertension and impaired fibrinolysis, respectively.
- Adiponectin and leptin, at physiological levels, promote insulin sensitivity; resistin's role in humans is unclear.
- Weight loss and exercise can modulate adipokine levels, while thiazolidinediones enhance adiponectin.
Conclusions:
- Adipokines play a critical role in the pathophysiology of obesity and its associated metabolic and cardiovascular complications.
- Targeting adipokine pathways offers potential therapeutic avenues for managing obesity-related diseases.
- Further research into adipokine function is crucial for developing effective treatments against atherosclerosis in obese patients.