Cited by 40Lipid metabolism and biosynthesisLipid metabolism and disordersAdipose Tissue and Metabolism

Effects of morning rise in cortisol concentration on regulation of lipolysis in subcutaneous adipose tissue

Samra, J. S., Clark, M. L., Humphreys, S. M., Macdonald, I. A., Matthews, D. R., Frayn, K. N.·1996·American Journal of Physiology-Endocrinology and Metabolism

Abstract

Cortisol has a well-defined circadian rhythm. The aim of the study was to examine the effect of the morning rise in cortisol concentration on lipolysis in adipose tissue. Ten healthy subjects were studied on two occasions, and six of these were studied on three occasions. During the first two occasions, either a control or cortisol suppression study was performed by using metyrapone, and on the third occasion exogenous cortisol replacement was given in addition to metyrapone. Lipolysis in the subcutaneous adipose tissue of the anterior abdominal wall was studied by measurement of arteriovenous differences. Reduction in the early morning rise in cortisol led to significantly decreased venoarterialized differences for nonesterified fatty acids (P < 0.05) and glycerol (P < 0.01), attributable in part to decreased hormone-sensitive lipase (EC 3.1.1.3) action (P < 0.05) in adipose tissue. At the same time the arterialized plasma triacylglycerol concentration increased (P < 0.005) with a significant reduction in the adipose lipoprotein lipase (EC 3.1.1.34) rate of action (P < 0.05). In the replacement study, values were identical to those of the control study, showing that metyrapone had no nonspecific effects on lipolysis. We conclude that the morning rise in plasma cortisol concentration plays an important role in the regulation of lipolysis in adipose tissue in normal healthy adults.

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Crossref · 10.1152/ajpendo.1996.271.6.e996

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Authors
Samra, J. S., Clark, M. L., Humphreys, S. M., Macdonald, I. A., Matthews, D. R., & Frayn, K. N.
Affiliations
John Radcliffe Hospital (GB)
Venue
American Journal of Physiology-Endocrinology and Metabolism
Published
1996-12-01
Volume
271
Issue
6
Pages
E996-E1002
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
OpenAlex
W1849400229
Cited by
40
References
16
Citations by year
2026: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 1 · 2017: 4 · 2015: 1 · 2013: 1 · 2012: 1
FWCI
1.05
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
cortisol, circadian rhythm, lipolysis, subcutaneous adipose tissue, metyrapone, hormone-sensitive lipase, lipoprotein lipase, free fatty acids, glycerol, triglycerides, arteriovenous differences, cortisol replacement
MeSH terms
Adipose Tissue, Adult, Circadian Rhythm, Female, Humans, Hydrocortisone, Lipolysis, Male, Middle Aged

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