Evaluation of the antioxidant peptide SS31 for treatment of burn-induced insulin resistance

  • Authors:
    • Edward A. Carter
    • Ali A. Bonab
    • Jeremy Goverman
    • Kasie Paul
    • John Yerxa
    • Ronald G. Tompkins
    • Alan J. Fischman
  • View Affiliations

  • Published online on: July 19, 2011     https://doi.org/10.3892/ijmm.2011.752
  • Pages: 589-594
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

After severe burn injury and other major traumas, glucose tolerance tests demonstrate delayed glucose disposal. This ‘diabetes of injury’ could be explained by insulin deficiency, and several studies have shown that soon after trauma (ebb phase) insulin concentrations are reduced in the face of hyperglycemia. After resuscitation of trauma patients (flow phase), β-cell responsiveness normalizes and plasma insulin levels are appropriate or even higher than expected, however, glucose intolerance and hyperglycemia persist. In the acute care setting, several approaches have been used for treating insulin resistance, including insulin infusion, propranolol and glucagon-like-peptide-1 (GLP-1). Recently, it was demonstrated that a tetrapeptide with antioxidant properties D-Arg-Dmt-Lys-Phe-NH2 (SS31), but not its inactive analogue Phe-D-Arg-Phe-Lys-NH2 (SS20) attenuates insulin resistance in mice maintained on a high fat diet. In this report the effects of SS31 and SS20 on burn-induced insulin resistance was studied in mice. Oral glucose tolerance tests (OGTT) were performed in 4 groups of 6 mice with thermal injury with or without pre-treatment with SS31 or SS20 and sham controls. In addition, biodistribution of 18FDG was measured in burned mice with and without SS31 treatment and shams (subsets of these animals were also studied by µPET). For comparison purposes, groups of 6 cold-stressed mice with and without SS31 treatment were also studied. The results of these studies demonstrate that SS31 but not SS20 ameliorated burn-induced insulin resistance. In addition, SS31 treatment resulted in marked reduction in the increased 18FDG uptake by brown adipose tissue (BAT) in burned but not cold-stressed animals; suggesting that the stressors act by different mechanisms. Overall, these studies confirmed that SS31 can be used to reverse burn-induced insulin resistance and provide a firm pre-clinical basis for future clinical trials of SS31 for the treatment of insulin resistance in patients with burn injury.

Related Articles

Journal Cover

October 2011
Volume 28 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Carter EA, Bonab AA, Goverman J, Paul K, Yerxa J, Tompkins RG and Fischman A : Evaluation of the antioxidant peptide SS31 for treatment of burn-induced insulin resistance. Int J Mol Med 28: 589-594, 2011.
APA
Carter, E.A., Bonab, A.A., Goverman, J., Paul, K., Yerxa, J., Tompkins, R.G., & Fischman, A. . (2011). Evaluation of the antioxidant peptide SS31 for treatment of burn-induced insulin resistance. International Journal of Molecular Medicine, 28, 589-594. https://doi.org/10.3892/ijmm.2011.752
MLA
Carter, E. A., Bonab, A. A., Goverman, J., Paul, K., Yerxa, J., Tompkins, R. G., Fischman, A. ."Evaluation of the antioxidant peptide SS31 for treatment of burn-induced insulin resistance". International Journal of Molecular Medicine 28.4 (2011): 589-594.
Chicago
Carter, E. A., Bonab, A. A., Goverman, J., Paul, K., Yerxa, J., Tompkins, R. G., Fischman, A. ."Evaluation of the antioxidant peptide SS31 for treatment of burn-induced insulin resistance". International Journal of Molecular Medicine 28, no. 4 (2011): 589-594. https://doi.org/10.3892/ijmm.2011.752