Brown Adipose Tissue Improves Whole-Body Glucose Homeostasis and Insulin Sensitivity in Humans

Author:

Chondronikola Maria1234,Volpi Elena3567,Børsheim Elisabet18,Porter Craig18,Annamalai Palam9,Enerbäck Sven10,Lidell Martin E.10,Saraf Manish K.18,Labbe Sebastien M.11,Hurren Nicholas M.18,Yfanti Christina16,Chao Tony123,Andersen Clark R.18,Cesani Fernando12,Hawkins Hal1314,Sidossis Labros S.13456

Affiliation:

1. Metabolism Unit, Shriners Hospital for Children, Galveston, TX

2. Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, TX

3. Department of Nutrition and Metabolism, Division of Rehabilitation Sciences, University of Texas Medical Branch, Galveston, TX

4. Department of Nutrition and Dietetics, Harokopio University of Athens, Athens, Greece

5. Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX

6. Sealy Center on Aging, University of Texas Medical Branch, Galveston, TX

7. Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX

8. Department of Surgery, University of Texas Medical Branch, Galveston, TX

9. Department of Interventional Radiology, University of Texas Medical Branch, Galveston, TX

10. Department of Medical and Clinical Genetics, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

11. Quebec Heart and Lung Research Institute Centre, Quebec City, Quebec, Canada

12. Department of Nuclear Medicine, University of Texas Medical Branch, Galveston, TX

13. Department of Pathology, University of Texas Medical Branch, Galveston, TX

14. Department of Pathology, Shriners Hospital for Children, Galveston, TX

Abstract

Brown adipose tissue (BAT) has attracted scientific interest as an antidiabetic tissue owing to its ability to dissipate energy as heat. Despite a plethora of data concerning the role of BAT in glucose metabolism in rodents, the role of BAT (if any) in glucose metabolism in humans remains unclear. To investigate whether BAT activation alters whole-body glucose homeostasis and insulin sensitivity in humans, we studied seven BAT-positive (BAT+) men and five BAT-negative (BAT−) men under thermoneutral conditions and after prolonged (5–8 h) cold exposure (CE). The two groups were similar in age, BMI, and adiposity. CE significantly increased resting energy expenditure, whole-body glucose disposal, plasma glucose oxidation, and insulin sensitivity in the BAT+ group only. These results demonstrate a physiologically significant role of BAT in whole-body energy expenditure, glucose homeostasis, and insulin sensitivity in humans, and support the notion that BAT may function as an antidiabetic tissue in humans.

Publisher

American Diabetes Association

Subject

Endocrinology, Diabetes and Metabolism,Internal Medicine

Reference38 articles.

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