Beneficial effects of teucrium polium and metformin on diabetes-induced memory impairments and brain tissue oxidative damage in rats

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Abstract

Objective. The effects of hydroalcoholic extract of Teucrium polium and metformin on diabetes-induced memory impairment and brain tissues oxidative damage were investigated. Methods. The rats were divided into: (1) Control, (2) Diabetic, (3) Diabetic-Extract 100 (Dia-Ext 100), (4) Diabetic-Extract 200 (Dia-Ext 200), (5) Diabetic-Extract 400 (Dia-Ext 400), and (6) Diabetic-Metformin (Dia-Met). Groups 3-6 were treated by 100, 200, and 400 mg/kg of the extract or metformin, respectively, for 6 weeks (orally). Results. In passive avoidance test, the latency to enter the dark compartment in Diabetic group was lower than that of Control group (P < 0.01). In Dia-Ext 100, Dia-Ext 200, and Dia-Ext 400 and Metformin groups, the latencies were higher than those of Diabetic group (P < 0.01). Lipid peroxides levels (reported as malondialdehyde, MDA, concentration) in the brain of Diabetic group were higher than Control (P < 0.001). Treatment by all doses of the extract and metformin decreased the MDA concentration (P < 0.01). Conclusions. The results of present study showed that metformin and the hydroalcoholic extract of Teucrium polium prevent diabetes-induced memory deficits in rats. Protection against brain tissues oxidative damage might have a role in the beneficial effects of the extract and metformin.

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Mousavi, S. M., Niazmand, S., Hosseini, M., Hassanzadeh, Z., Sadeghnia, H. R., Vafaee, F., & Keshavarzi, Z. (2015). Beneficial effects of teucrium polium and metformin on diabetes-induced memory impairments and brain tissue oxidative damage in rats. International Journal of Alzheimer’s Disease, 2015. https://doi.org/10.1155/2015/493729

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