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Lipolysis: contribution from regional fat

M D Jensen1

  • 1Endocrine Research Unit, Mayo Clinic, Rochester, Minnesota 55905, USA. jensen.michael@mayo.edu

Annual Review of Nutrition
|January 1, 1997
PubMed
Summary
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Human adipose tissue lipolysis varies significantly by body region and gender. These differences in free fatty acid (FFA) release may influence body fat distribution and health outcomes.

Area of Science:

  • Metabolism and Endocrinology
  • Human Physiology

Background:

  • Adipose tissue exhibits regional heterogeneity in its metabolic functions.
  • Understanding lipolysis variations is crucial for metabolic health and body composition research.

Purpose of the Study:

  • To investigate regional and gender-specific differences in human adipose tissue lipolysis.
  • To explore the influence of obesity and physiological stimuli on lipolysis.

Main Methods:

  • In vitro studies of adipocytes from different body fat depots.
  • In situ measurements of glycerol release from adipose tissue.
  • In vivo assessment of regional free fatty acid (FFA) release.

Main Results:

  • Significant differences in lipolysis were observed between intra-abdominal, abdominal subcutaneous, and lower-body subcutaneous fat depots.

Related Experiment Videos

  • Lower-body adipose tissue demonstrated less FFA release compared to upper-body fat in both obese and non-obese individuals.
  • Meal ingestion suppressed FFA release across all regions, while adrenergic stimulation showed gender-specific effects.

    • Conclusions:

    • Regional and gender disparities in adipose tissue lipolysis are evident in humans.
    • These variations may contribute to differential health effects associated with adipose tissue depots.
    • Lipolytic differences could play a role in the regulation of body fat distribution.