Effects of ethanol on neuroblastoma cells in culture: role of gangliosides in neuritogenesis and substrate adhesion

Journal of Neuroscience Research
K C LeskawaK A Webster

Abstract

Murine Neuro-2A neuroblastoma cells were exposed to ethanol in culture under two experimental paradigms: (1) short-term (24 hr or less) and low concentrations (0.05 to 0.5%; 8.5 to 86 mM) and (2) long-term (48 hr at 0.5%; 86 mM). Long-term ethanol exposure did not affect Neuro-2A viability, determined by DNA synthesis or the ability to exclude Trypan Blue. Similarly, long-term ethanol treatment did not inhibit differentiation, exhibited by the extension of neurites, promoted by either dibutyryl-cyclic-AMP or by incubation with exogenous ganglioside GM1. The incorporation of exogenous ganglioside GM1 into plasma membranes was not influenced by varying concentrations of ethanol (up to 1.2%; 204 mM). In contrast, ethanol did influence Neuro-2A cell attachment to collagen in a dualistic manner. During short-term ethanol exposure, cell attachment was enhanced. However, when cells were initially exposed to ethanol for 48 hr a marked inhibition of subsequent attachment was observed. Long-term ethanol exposure also inhibited attachment to other substrata, including laminin, fibronectin and vitronectin. Incubation of Neuro-2A cells with either exogenous ganglioside GM1 or a mixture of brain gangliosides partially reversed the inhibition...Continue Reading

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Citations

Sep 3, 2004·Brain Research·Blanca C SalazarEsperanza Recio-Pinto
Dec 3, 2014·Fertility and Sterility·Franck PellestorGeneviève Lefort
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Jul 31, 2014·Human Pathology·De-Bing XiangYun Wu
Mar 30, 2016·Current Opinion in Cell Biology·Zuzana Storchová, Wigard P Kloosterman

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