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Opposite Effect of Protein Synthesis Inhibitors on Potassium Deficiency‐Induced Apoptotic Cell Death in Immature and Mature Neuronal Cultures
Journal article   Peer reviewed

Opposite Effect of Protein Synthesis Inhibitors on Potassium Deficiency‐Induced Apoptotic Cell Death in Immature and Mature Neuronal Cultures

Elena Kharlamov, Cinzia M. Cagnoli, Cagla Atabay, Snežana Ikonomović, Dennis R. Grayson and Hari Manev
Journal of neurochemistry, v 65(3), pp 1395-1398
Sep 1995
PMID: 7643118

Abstract

Anisomycin Apoptosis Cerebellar granule cells Cycloheximide Depolarization Programmed cell death
: Typically, primary cultures of rat cerebellar granule neurons are grown in the presence of 25 mM KCl and are considered to mature by ∼7 days in vitro. Potassium deficiency was created by growing the neurons from days 1 to 4 in the presence of 12.5 mM KCl (immature cultures) or by switching the mature neurons grown with 25 mM KCl to 12.5 mM KCl. In both conditions we observed neuronal death that bears the signs of apoptosis, i.e., DNA fragmentation determined qualitatively by agarose gel electrophoresis of DNA and quantitatively by in situ terminal deoxynucleotidyl transferase assay. The protein synthesis inhibitors cycloheximide and anisomycin provided neuroprotection in the mature cultures but potentiated the toxic effect of KCl deprivation in the immature neurons. The results suggest that a prudent use of protein synthesis inhibitors is critical in experiments with primary neuronal cultures.

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Web of Science research areas
Biochemistry & Molecular Biology
Neurosciences
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