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An In Vitro Study of the Toxic Effects of Stachybotrys chartarum Metabolites on Lung Cells

Zuzana Kovácviková, Erzsébet Tátrai, Elena Piecková Jana Tulinská, Zuzana Pivovarová, Mirjana Mataušic-Pišl, Miroslava Kuricová and Ladislava Wsolová

During a study of indoor fungal colonisation, several isolates of Stachybotrys chartarum were recovered, and the effects of metabolites from four isolates on lung epithelial Type II cells and alveolar macrophages were studied in vitro. All the isolates showed toxic effects on both cell types, and they differed only in the extent of the changes induced. In Type II cells, the number of alkaline phosphatase positive cells was reduced, the pattern of Maclu ra pomifera agglutinin (MPA) binding was changed, and acid phosphatase activity in alveolar macrophages was diminished. In both cell types, the production of monocyte chemotactic protein-1 (MCP-1) and tumour necrosis factor-alpha (TNF-alpha) was changed, and parameters related to antioxidant status (superoxide dismutase, glutathione peroxidase, glutathione) were decreased.