Journal article
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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Authors
- Journal:
- Diabetes More from this journal
- Volume:
- 58
- Issue:
- 1
- Pages:
- 46-53
- Publication date:
- 2009-01-01
- DOI:
- EISSN:
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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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- Copyright date:
- 2009
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