Activation and involvement of p38 mitogen-activated protein kinase in glutamate-induced apoptosis in rat cerebellar granule cells - PubMed (original) (raw)
. 1997 Jul 25;272(30):18518-21.
doi: 10.1074/jbc.272.30.18518.
Affiliations
- PMID: 9228012
- DOI: 10.1074/jbc.272.30.18518
Free article
Activation and involvement of p38 mitogen-activated protein kinase in glutamate-induced apoptosis in rat cerebellar granule cells
H Kawasaki et al. J Biol Chem. 1997.
Free article
Abstract
In the mammalian central nervous system glutamate is the major excitatory neurotransmitter and plays a crucial role in plasticity and toxicity of certain neural cells. We found that glutamate stimulated activation of p38 and stress-activated protein kinase (SAPK, also known as c-Jun N-terminal kinase (JNK)), two subgroup members of the mitogen-activated protein kinase superfamily in matured cerebellar granule cells. The p38 activation was largely mediated by N-methyl-D-aspartate receptors. Furthermore, we have revealed a novel signaling pathway, that is, Ca2+-mediated activation of p38 in glutamate-treated granule cells. The glutamate concentration effective for inducing apoptosis correlated with that for inducing p38 activation. SB203580, a specific inhibitor for p38, inhibited glutamate-induced apoptosis. Thus p38 might be involved in glutamate-induced apoptosis in cerebellar granule cells.
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