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95% 산소에 노출된 마우스의 폐세척액내의 IL-6 및 세포 수의 변화와 이에 대한 부데소나이드 투여 효과

Other Titles
 Increase in IL-6 and Number of Inflammatory Cells in the Lung Lavage Fluid of Adult Mice Exposed to 95% Oxygen : Protective Effect of Budesonide 
Authors
 박민수  ;  이철  ;  장욱  ;  김정년  ;  노혜옥  ;  남궁란  ;  박국인  ;  한동관 
Citation
 Journal of the Korean Society of Neonatology (대한신생아학회지), Vol.5(2) : 135-142, 1998 
Journal Title
 Journal of the Korean Society of Neonatology (대한신생아학회지) 
ISSN
 1226-1513 
Issue Date
1998
Keywords
Pulmonary oxygen toxicity ; Inflammatory cell ; Interleukin-6 ; Lung lowage fluid ; Budesonide
Abstract
PURPOSE Pulmonary oxygen toxicity is mainly an inflammatory process, triggered by reactive oxygen species via a number of biochemical pathways. Recent evidence implies that ROS may stimulate NF-Kb to promote the synthesis of genes for inflammatory cytokines. At the same time, corticosteroids have been implicated in the prevention of activating this step. However, adverse reactions of systernic corticosteroids cause physicians to hesitate their use, not to mention their doubtful effectiveness. Budesonide is a locally acting corticosteroid with little systemic effect. Inhaled either through nebulizers or metered dose inhalers, it has proved the antiinflammatory, and thus antiasthmatic, effects in patients with asthma. If oxygen-induced injury is mediated by factors involved in a similar pathway as described above, budesonide will have protective effects against inflammatory responses of pulmonary oxygen toxicity. METHODS We used 10 adult mice in each of the three groups, AC is the room air control group, OC is the oxygen control group in which mice were exposed to 95% oxygen for 48 h; and TX is the treatment group in which mice were exposed to 95% oxygen for 48 h, and during that period they were given budesonide via a nebulizer 500 p g/dose every 12 h for 4 times. The mice were sacrificed with iection of a lethal dose of ketamine. Tracheotomy was done and an 18G ET tube was inserted. The lungs were lavaged with 80 ml/kg(or 80 microliter/g) isotonic saline slowly injected through the ET tube. The lung lavage fluid was centrifuged at 8000 rpm for 2 rninutes. Supernatant was used for analysis of IL-6, while the precipitate was resuspended in 200 microliter of isotonic saline for cell count. RESULTS The simple mean IL-6 values did not show a significant difference between groups (AC 199.4+/-192.7; OC 274.5+/-31.3; and TX 269.8+/-127.G pg/Ml). But considering their skewed distribution in AC and TX groups, the median values showed a conspicuous difference among 3 groups, that is, the median IL-6 value of AC was 124.8 pg/Ml, OC 269.8 pg/Ml, and TX 217.4 pglmL. For the cell counts, AC was 189+/-56/mm, OC 424+/-111/mm, and TX 266+/-22/mm(P<0.05). CONCLUSION In conclusion, budesonide nebulization appears to have protective effects against inflammatory responses of pulmonary oxygen toxicity in adult mice.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Park, Min Soo(박민수) ORCID logo https://orcid.org/0000-0002-4395-9938
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176848
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