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Carbon monoxide inhalation decreased lung injury via anti-inflammatory and anti-apoptotic effects in brain death rats.

Authors: Zhou, H  Liu, J  Pan, P  Jin, D  Ding, W  Li, W 
Citation: Zhou H, etal., Exp Biol Med (Maywood). 2010 Oct 1;235(10):1236-43. Epub 2010 Sep 1.
Pubmed: (View Article at PubMed) PMID:20810760
DOI: Full-text: DOI:10.1258/ebm.2010.010147

Brain death (BD) induces acute lung injury and makes donor lungs unfit for transplantation. Carbon monoxide (CO) inhalation at 50-500 ppm exerts anti-inflammatory and anti-apoptosis effects in several lung injury models. We examined whether CO inhalation would show favorable effects on lung injury in BD rats. BD rats inhaled 250 ppm CO for two hours. Inhalation decreased the severity of lung injury, as checked by histological examination. CO treatment reversed aggravation in PaO(2)/FiO(2), base excess and pH of BD rats. CO inhalation downregulated the pro-inflammatory cytokines (tumor necrosis factor-alpha, interleukin-6), and inhibited activity of myeloperoxidase in lung tissue. Inhalation significantly decreased cell apoptosis of lungs, and inhibited mRNA expression of intercellular adhesion molecule-1 and caspase-3 in the lungs. Further, the inhalation activated phosphorylation of p38 expression and inhibited phosphorylation of extracellular signal-regulated kinase expression in the lungs. In conclusion, CO exerts potent protective effects on lungs from BD rats, exhibiting anti-inflammatory and anti-apoptosis functions by modulating the mitogen-activated protein kinase signal transduction.


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CRRD Object Information
CRRD ID: 4145365
Created: 2010-11-02
Species: All species
Last Modified: 2010-11-02
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.