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[Adipose tissue: an innervated endocrine gland]
E Fliers1, J A Romijn, H P Sauerwein
1Academisch Medisch Centrum/Universiteit van Amsterdam, afd. Endocrinologie en Metabolisme, Meibergdreef 9, 1105 AZ Amsterdam. e.fliers@amc.uva.nl
Nederlands Tijdschrift Voor Geneeskunde
|November 8, 2002
Summary
Adipose tissue is an active endocrine organ, producing hormones like leptin and responding to nerve signals. This research reveals its complex role in regulating body fat distribution and metabolism.
Area of Science:
- Endocrinology
- Neuroscience
- Metabolic Research
Background:
- Historically viewed as passive fat storage, adipose tissue is now recognized for active endocrine functions.
- Recent discoveries include hormone production (e.g., leptin) and autonomic nervous system innervation.
- Understanding adipose tissue's dynamic roles is crucial for metabolic health.
Purpose of the Study:
- To review the evolving understanding of adipose tissue's function beyond simple energy storage.
- To explore the neuroendocrine regulation of adipose tissue, including sympathetic and parasympathetic innervation.
- To investigate the implications for body fat distribution and metabolic disease pathogenesis.
Main Methods:
- Review of recent scientific literature on adipose tissue biology and neuroendocrinology.
- Analysis of studies on hormone production by adipocytes (e.g., leptin).
- Examination of research on autonomic nervous system (sympathetic and parasympathetic) innervation of adipose tissue.
Main Results:
- Adipose tissue actively secretes hormones, such as leptin, which regulates adaptation to starvation.
- Sympathetic innervation facilitates lipolysis, releasing free fatty acids and glycerol.
- Parasympathetic innervation demonstrates anabolic effects, and distinct neuronal pathways may control regional fat distribution.
Conclusions:
- Adipose tissue is a dynamic endocrine and neuro-responsive organ.
- Autonomic innervation of specific fat compartments (abdominal vs. subcutaneous) may explain differential fat distribution.
- Further research into these mechanisms can illuminate the pathogenesis of metabolic disorders like hypertriglyceridemia and type-2 diabetes.