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Abstract
In this study, we aimed to investigate the long-term histopathologic changes in the lungs of rats exposed to a high concentration of chlorine gas. Twenty-four Sprague-Dawley rats were divided into three groups: the control group (group I) (n = 8), early-examined group (group II) (n = 8), and late-examined group (group III) (n = 8). In group II the lungs of rats were taken out just after the exposure, whereas in group III the lungs were taken out 45 days after the exposure. Eosinophilic liquid accumulation in alveoli and bronchi, diffuse intraalveolar edema, vascular congestion, severe perivascular edema, and free bleeding in intraalveolar and interstitial area were observed in the lungs of rats in group II. Interstitial fibrosis and thickening of the alveolar septa were observed in group III. These findings suggest that the people using these cleaning agents are at risk of harming themselves, and the victims of chlorine gas injury should be reexamined at a later period since they may have pulmonary damage even after 45 days of exposure.
The authors are grateful to Mustafa Fidan for technical assistance.
