Nerve cell death induced in vivo by kainic acid and quinolinic acid does not involve apoptosis.

Abstract:

:We investigated whether in vivo excitotoxicity was mediated by a mechanism of programmed cell death called apoptosis. Neurotoxic doses of kainic acid (1.2 nmol) and quinolinic acid (120 nmol) were unilaterally injected in the dorsal hippocampus of anesthetized rats. Eight or 16 h later the animals were killed and DNA was extracted from the injected hippocampi. DNA from mouse thymocytes exposed to methylprednisolone (10(-5) M for 6 h at 37 degrees C) was used as a positive control of apoptotic cells. No typical 'ladder' of DNA fragments (multimers of approximately 200 Kb) which characterizes apoptosis was seen in hippocampal cells after toxic doses of kainic or quinolinic acid, as assessed by agarose gel electrophoresis. This suggests that hippocampal nerve cell death induced in vivo by the excitotoxins is not mediated by apoptosis.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Ignatowicz E,Vezzani AM,Rizzi M,D'Incalci M

doi

10.1097/00001756-199111000-00004

subject

Has Abstract

pub_date

1991-11-01 00:00:00

pages

651-4

issue

11

eissn

0959-4965

issn

1473-558X

journal_volume

2

pub_type

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