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还原性谷胱甘肽对急性坏死性胰腺炎肺损伤的影响
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【关键词】 胰腺炎,急性坏死性；肺损伤；细胞因子；谷胱甘肽；治疗
Effect of reduced glutathione on lung injury in rats with acute necrotizing pancreatitis
【Abstract】 AIM: To investigate the changes of transcription factor nuclear factorκB (NFκB), TNFα, IL1β, IL18, myeloperoxidase (MPO) in the lung of rats with acute necrotizing pancreatitis (ANP) and explore the effects of reduced glutathione (GSH) on lung injury. METHODS: Wistar rats (n=72) were divided into 3 groups at random, ANP group, GSH treated group, and sham operation (SO) group. Animals in the 3 groups were killed 6, 12 and 18 h after operations and lung tissue, pancreas tissue were harvested. The expressions of IL18, IL1β, TNFα in lung tissue were measured by immunohistochemistry. MPO was determined by chromatometry. Intrapulmonary expression of NFkBp65 mRNA was detected by RTPCR. The histopathology of lung and pancreas was observed under the light microscope. RESULTS: The expressions of NFκB mRNA, IL18, IL1β, TNFα and the activity of MPO in lung tissue were much higher at 6, 12, 18 h in ANP group, with statistical significance compared with the SO group (P<0.05) and the levels of NFκB mRNA, IL1β and TNFα reached the peak at 12 h. After treatment with GSH, the levels of IL18, IL1β, TNFα became lower at 6, 12, 18 h and NFκB mRNA, MPO were decreased at 12 h (P<0.05 vs ANP group). CONCLUSION: All of NFκB， TNFα, IL1β, IL18 and MPO have something to do with acute lung injury in experimental acute necrosis pancreatitis. GSH may inhibit the activity of NFκB and neutrophil in lung tissue, decrease the concentrations of inflammatory cytokines (TNFα, IL1β, IL18), thus exerting the preventive effect against lung injury.
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