Influence of Naomai II capsule on dynamic expression of protease-activated receptors-1 after acute intracerebral hemorrhage / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 1265-1268, 2006.
Article
Dans Chinois
| WPRIM
| ID: wpr-356728
ABSTRACT
<p><b>OBJECTIVE</b>To study the dynamic expression of protease-activated receptor-1(PAR-1) after acute intracerebral hemorrhage (ICH) and the influence of Naomai capsule (NMC II) on the expression in rats.</p><p><b>METHOD</b>72 rats were randomly divided into 9 groups (n = 8 in each group). They were normal group, ICH model groups at 6, 24 h, 3, 7 d and NMC II groups at 6, 24 h, 3, 7 d. ICH models were induced by collagenase type VII-S. Immunohistochemical method was used to detect PAR-1 protein and RT-PCR technique was used to detect PAR-1mRNA in brain tissue around the haematoma at different groups.</p><p><b>RESULT</b>PAR-1 protein and mRNA were mild positive in normal group. In model groups, intensity of PAR-1 expression started to enhance at 6 h, and enhanced more at 24 h. PAR-1 expression reached the peak at 3 d and began to descend. At 7 d the decent was obvious. At 6, 24 h, 3, 7 d time point. The PAR-1 protein positive cell number and PAR-1 mRNA absorbance ratio in ICH model and NMC II groups were significantly higher than those in normal group (P < 0.05 or P < 0.01). The PAR-1 protein positive cell number and PAR-1mRNA absorbance ratio in NMC II group were significantly lower than those in ICH model group (P < 0.05 or P < 0.01).</p><p><b>CONCLUSION</b>After ICH, PAR-1 is continuously activated because of the simulation of thrombin. Function of thrombin after ICH maybe mediated by PAR-1; NMC II may inhibit the expression of PAR-1. This may be one of the main therapeutics mechanisms of NMC II.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pharmacologie
/
Plantes médicinales
/
ARN messager
/
Capsules
/
Médicaments issus de plantes chinoises
/
Matière médicale
/
Répartition aléatoire
/
Hémorragie cérébrale
/
Chimie
/
Maladie aigüe
Limites du sujet:
Animaux
langue:
Chinois
Texte intégral:
China Journal of Chinese Materia Medica
Année:
2006
Type:
Article
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