Journal of Yeungnam Medical Science

Original Articles

Effect of on Aerosolized Vitamin E Pretreatment on Interleukin-1 Induced Acute Lung Injury in Rats: Jin Hong Chung, Kyeong-Cheol Shin; Yeungnam Univ J Med. 2007;24(2 Suppl):S365-372. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S365

Abstract PDF: Background
：Interleukin-1 (IL-1) and neutrophil appear to contribute to the pathogenesis of acute respiratory distress syndrome (ARDS). Reactive oxygen species, as well as elastase released from activated neutrophil, are thought to play pivotal roles in the experimental models of acute lung leak. This study investigated whether aerosolized vitamin E can attenuate acute lung injury induced by IL-1 in rats. Materials and Methods：We intratracheally instilled either saline or IL-1 with and without pretreatment with aerosolized vitamin E in rats. After 5 hours of intratracheal instillation, lung lavage neutrophils, lung lavage protein concentration, lung myeloperoxidase(MPO) activity and lung wet weight to dry weight ratio(WW/DW) were measured in rat.
Results
：In rats given IL-1 intratracheally, lung lavage neutrophils, lung lavage protein concentration, lung MPO activity and WW/DW were higher. Pretreatment with aerosolized vitamin E decreased lung lavage neutrophils, lung MPO activity and WW/DW in rats given IL-1 intratracheally.
Conclusion
：These results suggest that direct pulmonary supplement of vitamin E decreases lung inflammation and leak in rats given IL-1 intratracheally.

Effect of Neutrophil Elastase inhibitor, ICI 200,355, on Interleukin-1 Induced acute lung injury in rats.: Jin Hong Chung, Yeung Chul Mun, Hye Jung Park, Kyeong Cheol Shin, Kwan Ho Lee; Yeungnam Univ J Med. 2002;19(1):55-62. Published online June 30, 2002; DOI: https://doi.org/10.12701/yujm.2002.19.1.55

Abstract PDF: BACKGROUND
Interleukin-1 (IL-1) and neutrophil appear to contribute to the pathogenesis of acute respiratory distress syndrome (ARDS). Elastase, as well as reactive oxygen species released from activated neutrophil, are thought to play pivotal roles in the experimental models of acute lung leak. This study investigated whether ICI 200,355, a synthetic elastase inhibitor, can attenuate acute lung injury induced by IL-1 in rats. MATERIALS AND METHODS: We intratracheally instilled either saline or IL-1 with and without treatment of ICI 200,355 in rats. Lung lavage neutrophils, lung lavage cytokine-induced neutrophil chemoattractant(CINC) concentration, lung lavage protein concentration, lung myeloperoxidase(MPO) activity and lung leak index were measured at 5 hours of intratracheal treatment. RESULTS: In rats given IL-1 intratracheally, lung lavage neutrophils, lung lavage CINC concentration, lung lavage protein concentration, lung MPO activity and lung leak index were higher. Intratracheal ICI 200,355 administration decreased lung lavage neutrophils, lung MPO activity and lung leak index, respectively, but did not decreased lung lavage CINC concentration. CONCLUSION: These results suggest that ICI 200,355 decreases lung inflammation and leak without decreasing lung lavage CINC concentration in rats given IL-1 intratracheally.

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