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Journal of Diabetes Research
Volume 2016 (2016), Article ID 4593052, 7 pages
http://dx.doi.org/10.1155/2016/4593052
Research Article

Acute Hypoglycemia Induces Painful Neuropathy and the Treatment of Coenzyme Q10

1Department of Anesthesiology, Perioperative Medicine and Pain Management, University of Miami Miller School of Medicine, Miami, FL 33136, USA
2Department of Obstetrics and Gynecology, Guangzhou Women and Children’s Medical Center, Guangzhou 510120, China
3Department of Anesthesiology, The Affiliated Cancer Hospital of Xiangya School Of Medicine, Central South University, Changsha, Hunan 410013, China

Received 11 August 2015; Revised 6 November 2015; Accepted 8 November 2015

Academic Editor: Carlos Martinez Salgado

Copyright © 2016 Yan Ping Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Diabetic neuropathic pain is reduced with tight glycemic control. However, strict control increases the risk of hypoglycemic episodes, which are themselves linked to painful neuropathy. This study explored the effects of hypoglycemia-related painful neuropathy. Pretreatment with coenzyme Q10 (CoQ10) was performed to explore the preventive effect of CoQ10 on hypoglycemia-related acute neuropathic pain. Two strains of mice were used and 1 unit/kg of insulin was given to induce hypoglycemia. Mechanical sensitivity of hindpaw withdrawal thresholds was measured using von Frey filaments. Blood glucose levels were clamped at normal levels by joint insulin and glucose injection to test whether insulin itself induced hypersensitivity. Results suggest that the increased mechanical sensitivity after insulin injection is related to decreased blood glucose levels. When blood glucose levels remained at a normal level by the linked administration of insulin and glucose, mice demonstrated no significant change in mechanical sensitivity. Pretreatment with CoQ10 prevented neuropathic pain and the expression of the stress factor c-Fos. These results support the concept that pain in the diabetic scenario can be the result of hypoglycemia and not insulin itself. Additionally, pretreatment with CoQ10 may be a potent preventive method for the development of neuropathic pain.