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  • Title: Reactive pleural inflammation caused by intratracheal instillation of killed microbes.
    Author: Li XY, Brown GM, Lamb D, Donaldson K.
    Journal: Eur Respir J; 1993 Jan; 6(1):27-34. PubMed ID: 8425591.
    Abstract:
    To investigate the pleural leucocyte response to severe alveolar inflammation, heat-killed Corynebacterium parvum were instilled intratracheally into the lungs of PVG rats and pleural lavage was performed. Polymorphonuclear neutrophils are not normally resident in the pleural space but were found transiently after intratracheal instillation of C. parvum. Macrophages increased gradually in the pleural space following instillation, reaching a peak at day 5. The activity of plasminogen activator inhibitor in the pleural leucocyte supernatants was increased at day 1, but returned to control levels by day 5. The activities of interleukin-1 and tumour necrosis factor secreted by pleural leucocytes were decreased compared with control pleural leucocytes at day 1 and were further reduced at day 5. The analysis of particle translocation showed that intratracheally instilled C. parvum and fluorescent beads with or without C. parvum did not reach the pleural space. We hypothesize that pleural inflammation resulting from C. parvum-induced inflammation in the lung is the result of transfer of a diffusible factor from the adjacent parenchyma.
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