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Cortisol release from adipose tissue by 11beta-hydroxysteroid dehydrogenase type 1 in humans.

Abstract:
OBJECTIVE: 11beta-Hydroxysteroid dehydrogenase type 1 (11beta-HSD1) regenerates cortisol from cortisone. 11beta-HSD1 mRNA and activity are increased in vitro in subcutaneous adipose tissue from obese patients. Inhibition of 11beta-HSD1 is a promising therapeutic approach in type 2 diabetes. However, release of cortisol by 11beta-HSD1 from adipose tissue and its effect on portal vein cortisol concentrations have not been quantified in vivo. RESEARCH DESIGN AND METHODS: Six healthy men underwent 9,11,12,12-[(2)H](4)-cortisol infusions with simultaneous sampling of arterialized and superficial epigastric vein blood sampling. Four men with stable chronic liver disease and a transjugular intrahepatic porto-systemic shunt in situ underwent tracer infusion with simultaneous sampling from the portal vein, hepatic vein, and an arterialized peripheral vein. RESULTS: Significant cortisol and 9,12,12-[(2)H](3)-cortisol release were observed from subcutaneous adipose tissue (15.0 [95% CI 0.4-29.5] and 8.7 [0.2-17.2] pmol . min(-1) . 100 g(-1) adipose tissue, respectively). Splanchnic release of cortisol and 9,12,12-[(2)H](3)-cortisol (13.5 [3.6-23.5] and 8.0 [2.6-13.5] nmol/min, respectively) was accounted for entirely by the liver; release of cortisol from visceral tissues into portal vein was not detected. CONCLUSIONS: Cortisol is released from subcutaneous adipose tissue by 11beta-HSD1 in humans, and increased enzyme expression in obesity is likely to increase local glucocorticoid signaling and contribute to whole-body cortisol regeneration. However, visceral adipose 11beta-HSD1 activity is insufficient to increase portal vein cortisol concentrations and hence to influence intrahepatic glucocorticoid signaling.
Publication status:
Published

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Publisher copy:
10.2337/db08-0969

Authors


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Institution:
University of Oxford
Division:
MSD
Department:
RDM
Sub department:
OCDEM
Role:
Author


Journal:
Diabetes More from this journal
Volume:
58
Issue:
1
Pages:
46-53
Publication date:
2009-01-01
DOI:
EISSN:
1939-327X
ISSN:
0012-1797


Language:
English
Keywords:
Pubs id:
pubs:15926
UUID:
uuid:ede87c2d-c251-489f-a3b5-914ebbe62c9f
Local pid:
pubs:15926
Source identifiers:
15926
Deposit date:
2012-12-19

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