title: Modelling of the biological activity for a set of ceramic fibre materials: a QSAR study.
abstract: The objective was to develop quantitative structure-activity relationships (QSARs) for a set of nine ceramic raw materials. The samples were characterized by a chemical analysis (both X-ray fluorescence and neutron activation analysis) and the morphology was determined by electron microscopy in combination with automated image analysis. Further, the fibre samples were subjected to two biological activity assays, measuring cytotoxicity and hydroxyl radical production. To investigate the produced data structures, principal component analysis (PCA) and partial least squares (PLS) were applied together with rigorous validation techniques. Significant QSARs were found for both biological activity assays. The morphology of the fibres plays an important role for the cytotoxicity and their trace element background is related to the hydroxyl radical production.
authors.affiliation: Commission of the European Communities, European Chemical Bureau T.P. 280, JRC Ispra Establishment, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Lindgren
authors.forename: M
authors.initials: M
authors.lastname: Sjöström
authors.forename: R
authors.initials: R
authors.lastname: Berglind
authors.forename: B
authors.initials: B
authors.lastname: Nyberg
mesh_terms: D000818:Animals; D002516:Ceramics / Q000032:analysis / Q000737:chemistry* / Q000633:toxicity*; D006224:Cricetinae; D003412:Cricetulus; D005347:Fibroblasts / Q000187:drug effects; D017665:Hydroxyl Radical / Q000378:metabolism; D008854:Microscopy, Electron; D008954:Models, Biological; D015999:Multivariate Analysis; D009501:Neutron Activation Analysis; D013052:Spectrometry, X-Ray Emission; D013329:Structure-Activity Relationship
chemical_list: D017665:Hydroxyl Radical