Early vs. late intervention of high fat/low dose streptozotocin treated C57Bl/6J mice with enalapril, α-lipoic acid, menhaden oil or their combination: Effect on diabetic neuropathy related endpoints

NEUROPHARMACOLOGY

卷:116

Article

Yorek, Matthew S.^1,4  Obrosov, Alexander²  Shevalye, Hanna²  Coppey, Lawrence J.²  Kardon, Randy H.^1,3,4  Yorek, Mark A.^1,2,4,5 

[1] Dept Vet Affairs Iowa City Hlth Care Syst, Room 204,Bldg 40, Iowa City, IA 52246 USA

[2] Univ Iowa, Dept Internal Med, Iowa City, IA 52242 USA

[3] Univ Iowa, Dept Ophthalmol & Visual Sci, Iowa City, IA 52242 USA

[4] Vet Affairs Ctr Prevent & Treatment Visual Loss, Iowa City, IA 52246 USA

[5] Univ Iowa, Fraternal Order Eagles Diabet Res Ctr, Iowa City, IA 52242 USA

关键词: Diabetic peripheral neuropathy;    Type 2 diabetes;    Enalapril;    alpha-Lipoic acid;    Menhaden oil;    Corneal nerves;   

DOI  :  10.1016/j.neuropharm.2016.12.022

来源: Elsevier

【 摘 要 】

We have previously demonstrated that enalapril, alpha-lipoic acid and menhaden (fish) oil has potential as a treatment for diabetic peripheral neuropathy. In this study we sought to determine the efficacy of these treatments individually or in combination on multiple neuropathic endpoints in a high fat fed low dose streptozotocin treated mouse, a model of type 2 diabetes, following early or late intervention. Four or twelve weeks after the onset of hyperglycemia, diabetic mice were treated with enalapril, alpha-lipoic acid, menhaden oil or their combination for 12 weeks. Afterwards, endpoints including glucose tolerance, motor and sensory nerve conduction velocity, thermal nociception, and intraepidermal and cornea nerve fiber density was determined. Glucose clearance was impaired in diabetic mice and significantly improved only with combination treatment and early intervention. Diabetes caused steatosis, slowing of motor and sensory nerve conduction velocity, thermal hypoalgesia and reduction in intraepidermal and cornea nerve fiber density. Treating diabetic mice with enalapril, alpha-lipoic acid or menhaden oil partially protected diabetic mice from these deficits, whereas the combination of these three treatments was more efficacious following early or late intervention. These studies suggest that a combination therapy may be more effective for treating neural complications of type 2 diabetes. Published by Elsevier Ltd.

【 授权许可】

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