Characterisation of pleural inflammation occurring after primary spontaneous pneumothorax

The European Respiratory Journal
A De SmedtM Noppen

Abstract

The aim of this study was to examine the inflammatory reaction occurring in the pleural space of patients suffering from primary spontaneous pneumothorax (PSP) using pleural lavage, which was performed in patients with PSP and in healthy control subjects (essential hyperhidrosis patients undergoing thoracoscopy for sympathicolysis treatment). Cellular and solute composition of lavage fluid, peripheral blood and parietal pleural biopsies were analysed. PSP lavage fluid showed an increase in all differentiated leucocytes, but most strikingly eosinophils and neutrophils. In the blood of patients with PSP, the total number of leucocytes and the absolute number of eosinophils, neutrophils and monocytes were also significantly increased. The time in which air was present in the pleural space was positively correlated with the increase of eosinophils in lavage fluid, parietal pleura and blood. Eosinophilic cationic protein was elevated after PSP and strongly correlated with the absolute number of lavage eosinophils. Chemo and cytokine analysis in lavage fluid showed differences in concentrations of interleukin (IL)-5, IL-6, IL-8, IL-12p40, tumour necrosis factor-alpha and RANTES, but not of eotaxin. Surprisingly, high levels of lipopo...Continue Reading

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