Angiotensin IV reverses the acute cerebral blood flow reduction after experimental subarachnoid hemorrhage in the rat.
J Cereb Blood Flow Metab
; 14(6): 1096-9, 1994 Nov.
Article
em En
| MEDLINE
| ID: mdl-7523429
ABSTRACT
The effect of angiotensin (ANG) IV on CBF after experimental subarachnoid hemorrhage (SAH) was studied in rats using laser-Doppler flowmetry. ANG IV (1 microgram/kg/min i.v.) or saline treatments were started 20 min after SAH. ANG IV increased CBF (from 45 to 84% of baseline) by 60 min. In the saline group, CBF remained low (51%). Pretreatment with the specific ANG II antagonist Sar1, Ile8-ANG II did not antagonize ANG IV. Determination of nitric oxide synthase (NOS) activity in vitro or inhibition of NOS in vivo did not support a role for NO in the action of ANG IV.
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Base de dados:
MEDLINE
Assunto principal:
Hemorragia Subaracnóidea
/
Angiotensina II
/
Circulação Cerebrovascular
Limite:
Animals
Idioma:
En
Revista:
J Cereb Blood Flow Metab
Ano de publicação:
1994
Tipo de documento:
Article