Effect of water-immersion restraint stress on nitric oxide production pathway in rat platelets
- VernacularTitle:束缚性应激对大鼠血小板NO合成通路的影响
- Author:
Haolou FENG
;
Yuying CUI
;
Fang WEI
;
Baoshui WANG
;
Chaoshu TANG
- Publication Type:Journal Article
- Keywords:
stress;
platelet;
nitric oxide;
nitric oxide synthase;
L-arginine transport
- From:
Basic & Clinical Medicine
2006;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of water-immersion restraint stress(WRS) on nitric oxide(NO) production and its mechanism in rat platelets.Methods Male SD rats underwent WIR stress for 2,4 and 8 hours.Ulcer index(UI) of stomach was chedsed by Guth method,nitrite production was measured by Greiss assay,nitric oxide synthase(NOS) activities and L-arginine transport rate were determined by isotope tracer method.ResultsAfter 2 h WRS,the NO production,the NOS activity and L-arginine transport rate in rat platelets obviously increased and then gradually decreased.After 8 h of WRS,these parameters were decreased as compared with the control group.The gastric ulcer appeared and got more serious after 4 h WIR stress.Conclusion Short-term WRS up-regulates L-arginine /NO pathway and increases nitric oxide production in the platelets but long-term WIR stress has the reversed effect.
