PLATELET-ACTIVATING-FACTOR IS A MESSENGER IN THE ELECTROCONVULSIVE SHOCK-INDUCED TRANSCRIPTIONAL ACTIVATION OF C-FOS AND ZIF-268 IN HIPPOCAMPUS

被引:65
作者
MARCHESELLI, VL
BAZAN, NG
机构
[1] LOUISIANA STATE UNIV, MED CTR, CTR EYE, NEW ORLEANS, LA 70112 USA
[2] LOUISIANA STATE UNIV, MED CTR, CTR NEUROSCI, NEW ORLEANS, LA 70112 USA
关键词
INTRACELLULAR PATHWAYS; GENE EXPRESSION; SYNAPTIC PLASTICITY; ZINC FINGER; TRANSCRIPTIONAL FACTOR;
D O I
10.1002/jnr.490370108
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Platelet-activating factor (PAF, 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine) , undetectable in resting neural tissue, accumulates in brain during seizures. A hetrazepine, BN-50730, is shown here to displace [H-3]PAF-specific binding from microsomal, but not from synaptosomal membranes, indicating selectivity for a high affinity intracellular binding site. Rats pretreated with BN-50730 by intraperitoneal or intracerebroventricular injection exhibited an inhibition of the electroconvulsive shock (ECS)-induced expression of c-fos and zif-268 in hippocampus. A much more pronounced, dose-dependent inhibition of ECS-induced zif-268 mRNA in hippocampus by intracerebroventricular injection of BN-50730 was observed. It is concluded that, in the hippocampus, PAF is a mediator of the expression of zif-268 and, to a lesser extent, c-fos through an intracellular specific binding site. Thus, PAF may be a messenger in signal regulated zinc-finger transcription factors, and in other immediate-early genes involved in long-term synaptic plasticity changes. (C) 1994 Wiley-Liss, Inc.
引用
收藏
页码:54 / 61
页数:8
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