| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Although pathological diagnosis of aspiration pneumonia depends on the presence of foreign body reactions to food in lungs, the pathogenic significances of these foreign body reactions have not been evaluated. We produced a novel mouse model of aspiration pneumonia by instilling intratracheally 0.1mg/g BW or 0.01mg/g BW cellulose. The bronchoalveolar lavage fluids revealed the accumulation of polymorphonuclear leukocytes in 24 hours, but its inflammation almost disappeared in 7 days. Histologically, macrophages were the dominant cell population in infiltrates around the foreign bodies in 7 days. The expressions of MIP1alpha and IL-6 increased remarkably in the acute phase of this foreign body reaction model. Staphylococcus aureus pneumonia worsened significantly by the complication with massive foreign body reactions.
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