5-Methoxyindole-2-Carboxylic Acid (MICA) Fails to Retard Development and Progression of Type II Diabetes in ZSF1 Diabetic Rats

Date

2021

Authors

Yan, Liang-Jun

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0000-0002-5815-5430 (Yan, Liang-Jun)

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Abstract

Purpose: 5-Methoxyindole-2-carboxylic acid (MICA) is a well-established reversible inhibitor of mitochondrial dihydrolipoamide dehydrogenase (DLDH). This chemical, as an indole derivative, has been shown to be neuroprotective against ischemic stroke injury when administered either before or after ischemic stroke in animal models. MICA has also been studied as a potential antidiabetic agent by numerous investigators, though the underlying mechanisms remain sketchy. To attempt to elucidate the mechanisms of its antidiabetic action, we tested the effect of MICA on ZSF1 rat, a widely used rodent model of type 2 diabetes. Methods: ZSF1 rats as well as its healthy controls were fed with control diet or MICA-containing diet (200 mg/kg/day) for 9 weeks, and then comparison of body weight changes and blood glucose levels at the end of the 9-week's feeding period were made. Conclusion: Our data indicate, unexpectedly, that MICA failed to show any anti-diabetic effect in the ZSF1 diabetic rats. The reasons for this failure were briefly discussed.

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