Role of endothelin and nitric oxide in the pathogenesis of asthma / 中国病理生理杂志
Chinese Journal of Pathophysiology
; (12): 435-437, 2001.
Article
de Zh
| WPRIM
| ID: wpr-410414
Bibliothèque responsable:
WPRO
ABSTRACT
AIM:To explore whether the balance between endothelin(ET) and nitric oxide(NO) plays an important role in airway hyperresponsiveness of asthmatic rats. METHODS:The tension of isolated perfused rat tracheal rings was measured after ET-1 stimulation and incubation of JKC 302 and L-NAME. RESULTS:ET-1 constricted isolated rat tracheal ring, produced slowly developing and long-lasting contraction. The ET-1-induced contraction response of asthmatic rat tracheal ring was higher than that of normal control group (P<0.01). JKC 302, a selective ETA receptor antagonist, partly blocked ET-1-induced contraction in asthmatic rat trachea ring. L-NAME significantly augmented the constriction caused by ET-1. CONCLUSION:The effects of ET on bronchomotor tone may be modified by NO as this is a bronchomotor, and the imbalance between ET and NO may play an important role in asthma pathogenesis.
Texte intégral:
1
Indice:
WPRIM
Type d'étude:
Etiology_studies
langue:
Zh
Texte intégral:
Chinese Journal of Pathophysiology
Année:
2001
Type:
Article