摘要
目的 :探讨一氧化氮体系在慢性低O2 高CO2 肺动脉高压形成中的作用。方法 :雄性Sprague -Daw ley大鼠分为正常对照组和 4周低O2 高CO2 肺动脉高压组。测定血浆NO含量 ,免疫组化法检测肺细小动脉cNOS和iNOS活性 ,原位杂交法检测其cNOSmRNA和iNOSmRNA的表达。结果 :肺动脉高压组血浆NO含量、肺细小动脉cNOS活性和cNOSmRNA表达显著低于对照组 (均P <0 .0 1) ,而iNOS活性和iNOSmRNA表达明显高于对照组 (均P <0 .0 1)。结论 :低O2 高CO2 时肺动脉NOS活性和NOSmRNA表达的改变引起的NO变化参与了肺动脉高压的形成。
AIM: To clarify the role of nitric oxide (NO) system in development of chronic hypoxic hypercapnic pulmonary hepertension. METHODS: Male Sprague-Dawley rats were randomly divided into control group and hypoxic hypercapnic group. NO content of plasma was determined, constitutive nitric oxide synthase (cNOS) and inducible nitric oxide synthase (iNOS) were examined using the technique of immunohistochemistry, expression of cNOS mRNA and iNOS mRNA of arteriole were detected by in situ hybridization. RESULTS: Plasma NO concentration, cNOS activity and cNOS mRNA expression in arteriole of chronic hypoxic hypecapnic group were significantly lower than that of control group ( P <0.01); activity of iNOS and expression of iNOS mRNA in arteriole showed significantly higher compared with control. CONCLUSION: The disturbance of NO production and NOS expression in arteriole are involved in hypoxic hypercapnic pulmonary hepertension.
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
2001年第12期1212-1214,I004,共4页
Chinese Journal of Pathophysiology
基金
浙江省自然科学基金资助 (No.3 96479
No.3 985 3 0)
