NMDA blockade attenuates caspase-3 activation and DNA fragmentation after neonatal hypoxia-ischemia.

Abstract:

:The aim was to study the effects of an NMDA receptor antagonist on caspase-3 activation and DNA fragmentation after hypoxia-ischemia (HI) in 7-day-old rats. Animals were treated with vehicle or MK-801 (0.5 mg/kg) directly after HI and sacrificed 8, 24 or 72h later. MK-801 reduced injury (by 53%), cells positive for active caspase-3 (by 39%) and DNA fragmentation (by 79%) in the cerebral cortex. Furthermore, MK-801 significantly decreased caspase-3 activity, and Western blots revealed a tendency towards decreased proteolytic cleavage of the caspase-3 proform. The data imply that NMDA receptors are involved in the activation of apoptotic processes in the immature brain after HI.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Puka-Sundvall M,Hallin U,Zhu C,Wang X,Karlsson JO,Blomgren K,Hagberg H

doi

10.1097/00001756-200009110-00002

subject

Has Abstract

pub_date

2000-09-11 00:00:00

pages

2833-6

issue

13

eissn

0959-4965

issn

1473-558X

journal_volume

11

pub_type

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