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The Cerebellum

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01.03.2012

Mechanisms of Ethanol-Induced Death of Cerebellar Granule Cells

verfasst von: Jia Luo

Erschienen in: The Cerebellum | Ausgabe 1/2012

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Abstract

Maternal ethanol exposure during pregnancy may cause fetal alcohol spectrum disorders (FASD). FASD is the leading cause of mental retardation. The most deleterious effect of fetal alcohol exposure is inducing neuroapoptosis in the developing brain. Ethanol-induced loss of neurons in the central nervous system underlies many of the behavioral deficits observed in FASD. The cerebellum is one of the brain areas that are most susceptible to ethanol during development. Ethanol exposure causes a loss of both cerebellar Purkinje cells and granule cells. This review focuses on the toxic effect of ethanol on cerebellar granule cells (CGC) and the underlying mechanisms. Both in vitro and in vivo studies indicate that ethanol induces apoptotic death of CGC. The vulnerability of CGC to ethanol-induced death diminishes over time as neurons mature. Several mechanisms for ethanol-induced apoptosis of CGC have been suggested. These include inhibition of N-methyl-d-aspartate receptors, interference with signaling by neurotrophic factors, induction of oxidative stress, modulation of retinoid acid signaling, disturbance of potassium channel currents, thiamine deficiency, and disruption of translational regulation. Cultures of CGC provide an excellent system to investigate cellular/molecular mechanisms of ethanol-induced neurodegeneration and to evaluate interventional strategies. This review will also discuss the approaches leading to neuroprotection against ethanol-induced neuroapoptosis.

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Titel: Mechanisms of Ethanol-Induced Death of Cerebellar Granule Cells
verfasst von: Jia Luo
Publikationsdatum: 01.03.2012
Verlag: Springer-Verlag
Erschienen in: The Cerebellum / Ausgabe 1/2012
Print ISSN: 1473-4222
Elektronische ISSN: 1473-4230
DOI: https://doi.org/10.1007/s12311-010-0219-0

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