Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/S0166-445X(96)00842-9
Title (Primary) Multivariate mode-of-action analysis of acute toxicity of phenols
Author Schüürmann, G.; Segner, H.; Jung, K.
Journal Aquatic Toxicology
Year 1997
Department OEC; COE
Volume 38
Issue 4
Page From 277
Page To 296
Language englisch
Keywords Phenols; Polar narcosis; Oxidative uncoupling; Test battery; Multivariate classification
Acute toxicity of eight phenols towards ten biological test systems is characterized with principal component analysis and partial least-squares regression in terms of underlying modes of action and associated compound properties. The test battery consists of nine different species: three fish, one waterflea, one ciliate, one marine bacterium in two different assays, two fish cell lines and one plant pollen. The compound set contains phenol, five chlorophenols and two nitrophenols, representing polar narcotics and uncouplers of oxidative phosphorylation. Lipophilicity (log Kow) and acidity (pKa) as well as respective bilinear decompositions in quantum chemical parameters are used as molecular descriptors. The results reveal substantial differences in specific sensitivity of the test systems for uncoupling activity. Furthermore, pentachlorophenol (as a classical uncoupler) exerts no significant excess toxicity over polar narcosis with any of the ten endpoints, and 4-nitrophenol apparently acts as uncoupler with most of the non-fish test species including procaryotic cells. The discussion includes alternative hypotheses about the underlying mechanism of uncoupling activity.
Persistent UFZ Identifier
Schüürmann, G., Segner, H., Jung, K. (1997):
Multivariate mode-of-action analysis of acute toxicity of phenols
Aquat. Toxicol. 38 (4), 277 - 296