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Biochemical brain markers and purinergic parameters in rat CSF after seizure induced by pentylenetetrazol.

Abstract：

:Cellular and molecular mechanisms involved in the generation of seizures and the magnitude of neural cells injury are not fully understood. We evaluated astrocyte and/or neuronal injury in rats in the pentylenetetrazol model of acute seizures by measuring S100B and NSE levels in cerebrospinal fluid. Additionally, we determined ADP and GDP hydrolysis by soluble nucleoside triphosphate diphosphohydrolase in the cerebrospinal fluid, and the concentration of nucleosides adenosine, inosine and guanosine as putative markers of brain injury. After pentylenetetrazol-induced seizures: (i) S100B values increased from 10 to 30 min, returning to control levels at 24 h; NSE levels presented a biphasic increase: an increase at 10 to 30 min returning to control levels, and again at 240 min followed by a decline at 24 h; (ii) nucleotidase activities increased from 10 min, returning to control levels at 240 min; (iii) guanosine and inosine levels increased exclusively after 30 min. In summary, this study showed biochemical changes in the cerebrospinal fluid occurring after seizures induced by pentylenetetrazol. Such events may have a modulating effect upon seizure expression, particularly nucleoside triphosphate diphosphohydrolase activities and nucleoside concentrations, but are nevertheless followed by neural death as evidenced by the increase in NSE and S100B levels.

journal_name

Brain Res Bull

journal_title

Brain research bulletin

authors

Oses JP,Leke R,Portela LV,Lara DR,Schmidt AP,Casali EA,Wofchuk S,Souza DO,Sarkis JJ

doi

10.1016/j.brainresbull.2004.07.006

keywords:

subject

Has Abstract

pub_date

2004-09-30 00:00:00

pages

237-42

issue

3

eissn

0361-9230

issn

1873-2747

pii

S0361-9230(04)00190-X

journal_volume

64

pub_type

杂志文章

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