Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases
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Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi · Aug 2018
[The effects of methylprednisolone on NLRP3 inflammasome in rats with acute lung injury Induced by Phosgene].
Objective: To investigate the effects of methylprednisolone on NOD-like receptor hot protein domain-associated protein 3 (NLRP3) inflammasome in phosgene-induced acute lung injury. Methods: Rats were randomly divided into four groups, 10 rats in Air group (inhalation of air of the same volume as the phosgene group) , 10 rats in Phosgene group (inhalation of 8.33 mg/L with 100% purity phosgene for 5 min) , 10 rats in Saline control group (inhalation of the same dose of phosgene and 2 mg/kg saline via tail vein injection one hour later) , 10 rats in MP group (inhalation of the same dose of phosgene and 2 mg/kg MP via tail vein injection one hour later). The specimens of serum, bronchoalveolar lavage fluid (BALF) and lung tissue were collected after 6h. ⋯ Compared with Air group, The levels IL-1β、IL-18 and IL-33 mRNA protein expression in the serum and BALF were significantly increased (P<0.05) in Phosgene group. Compared with Phosgene group, The levels IL-1β、IL-18 and IL-33 mRNA protein expression in the serum and BALF were significantly decreased (P<0.05) in MP group. Conclusion: Methylprednisolone can effectively protect the rats from phosgene-induced acute lung injury by inhibiting the expression of the NLRP3 inflammasome and reducing the release of inflammatory factors such as interleukin-1β (IL-1β) mediated by it.