Effects of heme oxygenase-endogenous carbon monoxide on mortality during septic shock in rats
10.3760/cma.j.issn.1671-0282.2009.02.008
- VernacularTitle:血红素氧合酶-内源性一氧化碳对感染性休克大鼠死亡率的影响
- Author:
Jianbo YU
;
Shanglong YAO
- Publication Type:Journal Article
- Keywords:
Septic shock;
Heme oxygenase;
Carbon monoxide;
Mortality
- From:
Chinese Journal of Emergency Medicine
2009;18(2):144-148
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of hemo oxygenase-endogenous carbon monoxide (HO-CO) on mortality of septic shock in rats. Method Eighty healthy Sprague-Dawley rats were randomly divided into four groups (n=20) :group-C,group-Z, group-SS and group-LZ. MAP was monitored continuously,and deaths within 7 days were recorded. Evans blue in lung, ALT, AST, Cr and BUN in plasma, SOD and MDA in kidney, lung and liver,and HO-1 mRNA,HO-2 mRNA,HO-1 protein and HO-2 protein in kidney, lung, femoral artery and liver were measured.Data were analyzed usiny ANOVA. Results ① Mortality in group-SS was lower than that in group-LZ (P<0.05). ②MAP in group-LZ was greater than that in group-SS (P<0.05). ③ Plasma ALT, AST, Cr and BUN,and MDA contents of liver, kidney and lung, and Evans blue content of lung in group-SS were lower than those in group-LZ (P<0.05). Contrarily,the plasma levels of COHb and SOD activity in liver, kid-ney and lung in group-SS were greater than those in group-LZ (P<0.05). ④ HO-1 mRNA and HO-1 protein levels in liver, kidney, femoral artery and lung tissues in group-LZ were lower than those in group- SS (P<0.05). There were no significant difference in HO-2 rnRNA and HO-2 protein found between one another of four groups (P>0.05). Conclusions The up-regulation of HO-1 protein followed by increase CO can reduce the mortality during septic shock, while the hypotension, which is partly attributed to HO-1 protein and CO,matters little to mortality.
