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영남의대학술지 Vol.24_No.2 Suppl. P.S365-372, Dec. 2007

Original Article

Interleukin-1으로 유도된 흰쥐 급성폐손상에서 Aerosolized Vitamin-E의 전처치 효과

Effect of on Aerosolized Vitamin E Pretreatment on Interleukin-1 Induced Acute Lung Injury in Rats

정진홍, 신경철
영남대학교 의과대학 내과학교실
책임저자:정진홍, 대구광역시 남구 대명동 317-1, 영남대학교 의과대학 내과학교실
Tel: (053) 620-3830, Fax: (053) 654-8386
E-mail: jhchn@med.yu.ac.kr

December 30, 2007

Abstract

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.

Key Words: Acute lung injury, Interleukin-1, Aerosolized vitamin E

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