Cited by 123Lipid metabolism and biosynthesisAdipose Tissue and MetabolismAdipokines, Inflammation, and Metabolic Diseases

Effects of Physiological Hypercortisolemia on the Regulation of Lipolysis in Subcutaneous Adipose Tissue1

Samra, Jaswinder S., Clark, Mo L., Humphreys, Sandy M., MacDonald, Ian A., Bannister, Peter A., Frayn, Keith N.·1998·The Journal of Clinical Endocrinology & Metabolism

Abstract

Cortisol is known to increase whole body lipolysis, yet chronic hypercortisolemia results in increased fat mass. The main aim of the study was to explain these two apparently opposed observations by examining the acute effects of hypercortisolemia on lipolysis in subcutaneous adipose tissue and in the whole body. Six healthy subjects were studied on two occasions. On one occasion hydrocortisone sodium succinate was infused iv to induce hypercortisolemia (mean plasma cortisol concentrations, 1500 ± 100 vs. 335± 25 nmol/L; P < 0.001); on the other occasion (control study) no intervention was made. Lipolysis in the sc adipose tissue of the anterior abdominal wall was studied by measurement of arterio-venous differences, and lipolysis in the whole body was studied by constant infusion of[ 1,2,3-2H5]glycerol for measurement of the systemic glycerol appearance rate. Hypercortisolemia led to significantly increased arterialized plasma nonesterified fatty acid (NEFA; P < 0.01) and blood glycerol concentrations (P < 0.05), with an increase in systemic glycerol appearance (P < 0.05). However, in sc abdominal adipose tissue, hypercortisolemia decreased veno-arterialized differences for NEFA (P < 0.05) and reduced NEFA efflux (P < 0.05). This reduction was attributable to decreased intracellular lipolysis (P < 0.05), reflecting decreased hormone-sensitive lipase action in this adipose depot. Hypercortisolemia caused a reduction in arterialized plasma TAG concentrations (P < 0.05), but without a significant change in the local extraction of TAG (presumed to reflect the action of adipose tissue lipoprotein lipase). There was no significant difference in plasma insulin concentrations between the control and hypercortisolemia study. Site-specific regulation of the enzymes of intracellular lipolysis (hormone-sensitive lipase) and intravascular lipolysis (lipoprotein lipase) may explain the ability of acute cortisol treatment to increase systemic glycerol and NEFA appearance rates while chronically promoting net central fat deposition.

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Crossref · 10.1210/jcem.83.2.4547

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Authors
Samra, J. S., Clark, M. L., Humphreys, S. M., MacDonald, I. A., Bannister, P. A., & Frayn, K. N.
Affiliations
University of Oxford (GB)
Corresponding author
Frayn, Keith N.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
1998-02-01
Volume
83
Issue
2
Pages
626-631
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2073269669
Cited by
123
References
41
Citations by year
2025: 3 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 4 · 2019: 4 · 2018: 1 · 2017: 4 · 2016: 5 · 2015: 5 · 2014: 6 · 2013: 12 · 2012: 6
FWCI
1.49
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
hypercortisolism, cortisol, lipolysis, subcutaneous adipose tissue, free fatty acids, hormone-sensitive lipase, lipoprotein lipase, fat deposition, insulin
MeSH terms
Abdomen, Adipose Tissue, Adult, Blood Glucose, Sterol Esterase, Esterification, Fatty Acids, Nonesterified, Female, Glycerol, Humans, Hydrocortisone, Hydroxybutyrates, Insulin, Lipolysis, Lipoprotein Lipase, Male, Middle Aged, Triglycerides, Lactic Acid, 3-Hydroxybutyric Acid

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