Effects of tetrahydrobiopterin on cerebral infarction after transient focal ischemia in rats.

Abstract:

OBJECTIVES:The present study investigated the effects of tetrahydrobiopterin (BH4) on cerebral infarction after transient focal ischemia in rats. METHODS:Focal ischemia (1·5 hours) was created in male Sprague-Dawley rats (250-280 g) by middle cerebral artery occlusion. Some rats were treated with 20 mg/kg tetrahydrobiopterin by intraperitoneal injection 30 minutes before reperfusion. At 2, 6, and 12 hours of reperfusion, the brains were harvested for the nitric oxide synthase (NOS) activity and nitric oxide (NO) level assays. At 12 hours of reperfusion, the brains were harvested for infarct size measurement. RESULTS:NOS activity and NO level were all augmented after reperfusion. BH4 treatment significantly further increased NOS activity and NO level. Cerebral infarct size was significantly bigger in BH4 treatment group compared to that in no treatment group. CONCLUSIONS:The data indicate that BH4 enhances cerebral infarction after transient focal ischemia in rats, through NOS and NO pathway.

journal_name

Neurol Res

journal_title

Neurological research

authors

Tang LL,Zheng JS

doi

10.1179/016164110X12700393823651

subject

Has Abstract

pub_date

2011-12-01 00:00:00

pages

1064-7

issue

10

eissn

0161-6412

issn

1743-1328

pii

ner2215

journal_volume

33

pub_type

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