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Neuroprotection by vitamin C against ethanol -induced neuroinflammation associated neurodegeneration in developing rat brain

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Ethanol induces oxidative stress and its exposure during early developmental age causes neuronal cell death which leads to several neurological disorders. We previously reported that vitamin C can protect against ethanol-induced apoptotic cell death in the developing rat brain. Here, we extended our study to understand the therapeutic efficacy of vitamin C against ethanol-induced oxidative stress, neuroinflammation mediated neurodegeneration in postnatal day 7 (PND7) rat. A single episode of ethanol (5g/kg) subcutaneous administration to postnatal day 7 rat significantly induced the production of reactive oxygen species (ROS), and activated both microglia and astrocytes followed by the induction of different apoptotic markers. On the other hand, due to its free radical scavenging properties, vitamin C treatment significantly reduced the production of reactive oxygen species, suppressed both activated microglia and astrocytes and reversed other changes including elevated level of Bax/Bcl-2 ratio, cytochrome c and different caspases such as caspase-9 and caspase-3 induced by ethanol in developing rat brain. Moreover, vitamin C treatment also reduced ethanol-induced activation of Poly [ADP-Ribose] Polymerase 1(PARP-1) and neurodegeneration as evident from Flouro-Jade-B and Nissl stainined neuronal cell death in PND7 rat brain. These findings suggest that vitamin C mitigated ethanol-induced oxidative stress, neuroinflammation and apoptotic neuronal loss and may be beneficial against ethanol damaging effects in brain development.
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Keywords: Ethanol; inflammation; neurodegeneration; neuroprotection; reactive oxygen species; vitamin C

Document Type: Research Article

Publication date: April 1, 2016

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  • CNS & Neurological Disorders - Drug Targets aims to cover all the latest and outstanding developments on the medicinal chemistry, pharmacology, molecular biology, genomics and biochemistry of contemporary molecular targets involved in neurological and central nervous system (CNS) disorders e.g. disease specific proteins, receptors, enzymes, genes. Each issue of the journal will contain a series of timely in-depth reviews written by leaders in the field covering a range of current topics on drug targets involved in neurological and CNS disorders. As the discovery, identification, characterization and validation of novel human drug targets for neurological and CNS drug discovery continues to grow; this journal will be essential reading for all pharmaceutical scientists involved in drug discovery and development.
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