Change of carbon monoxide in plasma and tissue during acute hypoxia.
- Author:
Xueqin DING
1
;
Guiming LIU
;
Junke WANG
;
Zhuoren SHENG
Author Information
- Publication Type:Journal Article
- MeSH: Acute Disease; Animals; Blood Gas Analysis; Carbon Monoxide; blood; metabolism; Cyclic GMP; blood; Heme Oxygenase (Decyclizing); antagonists & inhibitors; Hemodynamics; Hypoxia; metabolism; physiopathology; Kidney; metabolism; Liver; metabolism; Lung; metabolism; Rats; Rats, Wistar
- From: Chinese Medical Sciences Journal 2003;18(1):50-53
- CountryChina
- Language:English
-
Abstract:
OBJECTIVETo investigate the role of endogenous carbon monoxide (CO) in hypoxia.
METHODSAfter rats were inhaled with hypoxic gases and the heme oxygenase inhibitor ZnPPIX was administered, we measured the CO levels in plasma, liver, lung and kidney. Meanwhile plasma cGMP levels were observed. Furthermore, we recorded the change of hemodynamic and blood gases.
RESULTSAcute mild hypoxia (10% O2) significantly increaed CO levels in plasma as well as liver, kidney and lung, while acute severe hypoxia (5% O2) significantly decreased CO levels in plasma as well as liver, kidney and lung. In addition, the former significantly elevated cGMP levels in plasma while the latter markedly reduced cGMP levels in plasma. The hemodynamic change occurred in accordance with the changes carbon monoxide.
CONCLUSIONOur results indicate, for the first time, that the endogenous carbon monoxide plays an important role in regulating the vessel tone during hypoxia.
