当前位置： SCI文献检索 > RESUSCITATION期刊下所有文献 > The effect of intracerebroventricular application of the caspase-3 inhibitor zDEVD-FMK on neurological outcome and neuronal cell death after global cerebral ischaemia due to cardiac arrest in rats.

The effect of intracerebroventricular application of the caspase-3 inhibitor zDEVD-FMK on neurological outcome and neuronal cell death after global cerebral ischaemia due to cardiac arrest in rats.

Abstract：

BACKGROUND:Global cerebral ischaemia after cardiac arrest (CA) leads to programmed cell death (PCD) with characteristic signs of apoptosis in selectively vulnerable areas of the brain. The activation of caspase-3, an executioner caspase, plays a key role in the apoptotic cascade. We, therefore, studied the effects of the application of the specific caspase-3 inhibitor zDEVD-FMK on neurological outcome and neuronal cell death after experimental CA in rats. METHODS:A 6-min CA was induced in anaesthetised and mechanically ventilated male Wistar rats. After cardiopulmonary resuscitation (CPR) and restoration of spontaneous circulation (ROSC) the animals were randomised to two groups to receive a continuous intracerebroventricular (i.c.v.) infusion for 7 days of zDEVD-FMK or placebo (artificial cerebrospinal fluid, CSF). At 24h, 3 and 7 days after ROSC, animals were tested according to a neurological deficit score (NDS). Seven days after ROSC, coronal sections of the brain were taken at the dorsal hippocampal level and analysed with cresyl-violet staining, the TUNEL technique and a caspase activity assay. Viable and TUNEL-positive neurons were counted in the hippocampal CA-1 sector. RESULTS:The NDS demonstrated severe deficits 1 and 3 days after ROSC, which resolved by 7 days with no difference between the two groups. At 7 days after ROSC neuronal death could be detected using cresyl-violet and TUNEL staining with no difference between the groups. CONCLUSION:We conclude that zDEVD-FMK administration has no effect on neurological outcome and PCD after global cerebral ischaemia following CA in rats. Other mechanisms or pathways must be identified in the pathophysiology of PCD after CA.

journal_name

Resuscitation

journal_title

Resuscitation

authors

Teschendorf P,Vogel P,Wippel A,Krumnikl JJ,Spöhr F,Böttiger BW,Popp E

doi

10.1016/j.resuscitation.2008.02.010

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

85-91

issue

1

eissn

0300-9572

issn

1873-1570

pii

S0300-9572(08)00115-9

journal_volume

78

pub_type

杂志文章

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