Effects of polidatin on phospholipase A_2,nitric oxide and endothelin1 levels in serum and lung of hypoxic pulmonary hypertension rats
- VernacularTitle:白藜芦醇苷对慢性常压低氧性肺动脉高压模型中磷脂酶A_2、一氧化氮和内皮素水平的影响
- Author:
Liyan CHEN
;
Qi MAI
;
Bo PENG
;
Lanping GUO
;
Biao LIANG
- Publication Type:Journal Article
- Keywords:
Palidatin;
Pulmonary hypertension;
Phospholipase A;
Nitric oxide;
Endothelin-1
- From:
Chinese Journal of Pathophysiology
1989;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To investigate the effects of polidatin on phospholipase A_2(PLA_2),nitric oxide(NO),and endothelin-1(ET-1) levels in serum and lung homogenate of hypoxic pulmonary hypertension rats.METHODS: 29 healthy Spraugue-Dawley rats were randomly divided into normal control group,chronic hypoxic group and hypoxic plus polidatin group.The model of chronic hypoxic pulmonary hypertension was made by method of intermittent isobaric hypoxia for 21 days.The mean pulmonary arterial pressure(mPAP) was measured by inserting a microcatheter into the pulmonary artery.The ratio of right ventricular wall and that of left ventricular wall and ventricular septum weight(R/L+S) was measured as well.RESULTS: After exposed to hypoxia for 21 days,the mPAP,R/L+S,PLA_2 and ET-1 activities in blood and lung homogenate increased significantly. The NO concentration decreased significantly.Pretreatment with PD attenuated these changes mentioned above.CONCLUSION: Pretreatment with PD effectively prevents the formation of chronic hypoxic pulmonary hypertension.Its mechanism may be related to the inhibition of PLA_2 and ET-1 and promotion of NO production.
