Exogenous carbon monoxide protects against the lung injury induced by ischemia-reperfusion of hind limbs in rats / 中国病理生理杂志
Chinese Journal of Pathophysiology
;
(12)1986.
Artigo
em Chinês
| WPRIM
| ID: wpr-526874
ABSTRACT
AIM:
To study the mechanism of protective effect of exogenous carbon monoxide (CO) in the lung injury induced by ischemia-reperfusion (IR) of hind limbs in rats.METHODS:
Thirty-two SD rats were randomly divided into 4 groups control, control+CO, IR and IR+CO. A rat model of ischemia in hind limbs and the reperfusion lung injury was made. The rats in IR+CO and control+CO groups were exposed to air containing 2.5?10~ -8 CO for 1 h before reperfusion or the corresponding control time point, while the other two groups were exposed to the routine air. The lung tissue structure, polymorphonuclear leukocyte (PMN) count, wet-to-dry weight ratio (W/D), malondialdehyde (MDA) content and the animal survival rate were observed. The carboxyhemoglobin (COHb) levels in artery blood were detected with CO-oximeter and the expression of intercellular adhesion molecule-1 (ICAM-1) in the lung was detected by Western blotting.RESULTS:
Compared to control, the animal mortality, lung PMNs number, W/D , MDA content and ICAM-1 expression were all significantly increased in IR group. Compared with the IR group, the blood COHb level was significantly increased and the animal mortality, lung PMNs number, W/D, MDA content and ICAM-1 expression were all significantly decreased in IR+CO group.CONCLUSION:
These data suggest that exogenous CO attenuate limb IR- induced lung injury by down-regulatiny ICAM-1 expression and suppressing PMN sequestration in the lung following limb IR in rats.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Chinese Journal of Pathophysiology
Ano de publicação:
1986
Tipo de documento:
Artigo
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