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Experimental inhalation of chlorine gas produced with a different method; effects of N-acetyl cysteine on acute pulmonary damage.
Toxicology Mechanisms and Methods 2008 January
ABSTRACT The two most common gas inhalation injuries encountered in emergency departments are carbon monoxide and chlorine inhalations. In this study, chlorine was produced through a method different to the previous experimental models. Rats were subjected to inhale chlorine, after which the effects of N-acetylcysteine on pulmonary damage were evaluated. A total of 50 rats were equally divided into five groups. Group 1 received nothing. Groups 2 and 3 were taken as 6 h, groups 4 and 5 as 24 h control and N-acetylcysteine groups, respectively. Firstly, 200 ppm chlorine gas was given for 20 min. Then, 40 mg/kg N-acetylcysteine was given intraperitoneally. The same procedure with the same dose was repeated 3 h later. The same procedures were applied to the control group but this time saline was used. Tissue samples of lungs were taken. Glutathione levels of the rats in the N-acetylcysteine group sacrificed at 24 h were significantly higher than those of the control group. Histopathological evaluation of the pulmonary tissues of the rats sacrificed at 6 and 24 h revealed mild-to-moderate degrees of tissue damage. The degree of tissue damage at 6 h and 24 h N-acetylcysteine group rats was lower than that in the control group. As a result, tissue damage resulting from experimental chlorine inhalation can be alleviated by N-acetylcysteine. This is mainly the result of the antioxidant effects of the N-acetylcysteine.
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