Increase of prothrombin-mRNA after global cerebral ischemia in rats, with constant expression of protease nexin-1 and protease-activated receptors.
Neurosci Lett
; 329(2): 181-4, 2002 Aug 30.
Article
en En
| MEDLINE
| ID: mdl-12165407
ABSTRACT
Prothrombin, protease-activated receptors (PARs) and the specific thrombin inhibitor protease nexin-1 (PN-1) are expressed in the brain. Recent studies have shown that the serine protease thrombin, depending on its concentration, plays an important role in neuronal degeneration or protection after cerebral ischemia. However, it is still uncertain whether a change in prothrombin or alterations in the expression of specific PAR-subtypes or PN-1 are associated with postischemic thrombin effects. Using semi-quantitative reverse transcription-polymerase chain reaction analysis, we show that prothrombin was up-regulated in the hippocampal formation 24 h after transient global ischemia in rats (two-vessel occlusion with hypotension), whereas the expression of PN-1 and the expression of PAR-subtypes 1-3 did not change significantly. Thus, control of the balance between the expression of prothrombin and PN-1 may reflect an important mechanism that underlies postischemic thrombin effects.
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Bases de datos:
MEDLINE
Asunto principal:
Protrombina
/
ARN Mensajero
/
Proteínas Portadoras
/
Regulación hacia Arriba
/
Isquemia Encefálica
/
Receptores de Trombina
Límite:
Animals
Idioma:
En
Revista:
Neurosci Lett
Año:
2002
Tipo del documento:
Article
País de afiliación:
Alemania