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Oxidative Stress in a Model of Toxic Demyelination in Rat Brain: The Effect of Piracetam and Vinpocetine

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Abstract

We studied the role of oxidative stress and the effect of vinpocetine (1.5, 3 or 6 mg/kg) and piracetam (150 or 300 mg/kg) in acute demyelination of the rat brain following intracerebral injection of ethidium bromide (10 μl of 0.1%). Results: ethidium bromide caused (1) increased malondialdehyde (MDA) in cortex, hippocampus and striatum; (2) decreased total antioxidant capacity (TAC) in cortex, hippocampus and striatum; (3) decreased reduced glutathione (GSH) in cortex and hippocampus (4); increased serum nitric oxide and (5) increased striatal (but not cortical or hippocampal) acetylcholinesterase (AChE) activity. MDA decreased in striatum and cortex by the lower doses of vinpocetine or piracetam but increased in cortex and hippocampus and in cortex, hypothalamus and striatum by the higher dose of vinpocetine or piracetam, respectively along with decreased TAC. GSH increased by the higher dose of piracetam and by vinpocetine which also decreased serum nitric oxide. Vinpocetine and piracetam displayed variable effects on regional AChE activity.

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Authors and Affiliations

  1. Department of Toxicology and Narcotics, National Research Centre, Tahrir St., Dokki, Cairo, Egypt

    Omar M. E. Abdel-Salam & Neveen A. Salem

  2. Department of Pharmacology, National Research Centre, Cairo, Egypt

    Omar M. E. Abdel-Salam & Amany A. Sleem

  3. Department of Physiology, National Research Centre, Cairo, Egypt

    Yasser A. Khadrawy

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  1. Omar M. E. Abdel-Salam
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  2. Yasser A. Khadrawy
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  3. Neveen A. Salem
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Correspondence to Omar M. E. Abdel-Salam.

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Abdel-Salam, O.M.E., Khadrawy, Y.A., Salem, N.A. et al. Oxidative Stress in a Model of Toxic Demyelination in Rat Brain: The Effect of Piracetam and Vinpocetine. Neurochem Res 36, 1062–1072 (2011). https://doi.org/10.1007/s11064-011-0450-1

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