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Razzoli M, McCallum J, Gurney A, et al. Chronic stress aggravates glucose intolerance in leptin receptor-deficient (db/db) mice. Genes Nutr. 2015;10(3):458doi: 10.1007/s12263-015-0458-2.
Razzoli, M., McCallum, J., Gurney, A., Engeland, W. C., & Bartolomucci, A. (2015). Chronic stress aggravates glucose intolerance in leptin receptor-deficient (db/db) mice. Genes & nutrition, 10(3), 458. https://doi.org/10.1007/s12263-015-0458-2
Razzoli, Maria, et al. "Chronic stress aggravates glucose intolerance in leptin receptor-deficient (db/db) mice." Genes & nutrition vol. 10,3 (2015): 458. doi: https://doi.org/10.1007/s12263-015-0458-2
Razzoli M, McCallum J, Gurney A, Engeland WC, Bartolomucci A. Chronic stress aggravates glucose intolerance in leptin receptor-deficient (db/db) mice. Genes Nutr. 2015 May;10(3):458. doi: 10.1007/s12263-015-0458-2. Epub 2015 Mar 20. PMID: 25791744; PMCID: PMC4366428.
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Genes Nutr. 2015 May;10(3):458. doi: 10.1007/s12263-015-0458-2. Epub 2015 Mar 20.

Chronic stress aggravates glucose intolerance in leptin receptor-deficient (db/db) mice.

Genes & nutrition

Maria Razzoli, Jacob McCallum, Allison Gurney, William C Engeland, Alessandro Bartolomucci

Affiliations

  1. Department of Integrative Biology and Physiology, University of Minnesota, Cancer and Cardiovascular Research Building, 2231 6th St SE, Minneapolis, MN, 55455, USA, [email protected].

PMID: 25791744 PMCID: PMC4366428 DOI: 10.1007/s12263-015-0458-2

Abstract

Genetic predisposition and environmental challenges interact to determine individual vulnerability to obesity and type 2 diabetes. We previously established a mouse model of chronic subordination stress-induced hyperphagia, obesity, metabolic like-syndrome and insulin resistance in the presence of a high-fat diet. However, it remains to be established if social stress could also aggravate glucose intolerance in subjects genetically predisposed to develop obesity and type 2 diabetes. To answer this question, we subjected genetically obese mice due to deficiency of the leptin receptor (db/db strain) to chronic subordination stress. Over five weeks, subordination stress in db/db mice led to persistent hyperphagia, hyperglycemia and exacerbated glucose intolerance altogether suggestive of an aggravated disorder when compared to controls. On the contrary, body weight and fat mass were similarly affected in stressed and control mice likely due to the hyperactivity shown by subordinate mice. Stressed db/db mice also showed increased plasma inflammatory markers. Altogether our results suggest that chronic stress can aggravate glucose intolerance but not obesity in genetically predisposed subjects on the basis of a disrupted leptin circuitry.

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