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Rozamn, K.* ; Roth, W.L.* ; Greim, H.A. ; Stahl, B.U.* ; Doullkl, J.*

Relative potency of chlorinated dibenzo-p-dioxins (CDDs) in acute, subchronic and chronic (carcinogenicity) toxicity studies: implications for risk assessment of chemical mixtures.

Toxicology 77, 39-50 (1993)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
This paper shows that the relative toxic potency of four chlorinated dibenzo-p-dioxins (CDDs) is similar in two species with different sensitives (guinea pig, Sprague-Dawley rat). More importantly, it also demonstrates that the toxic potencies of these homologues are very similar for acute, subchronic and chronic dosing in the same species (rat). Furthermore, examination of different endpoints of toxicity (mortality, porphyria, carcinogenicity) suggests that the dose-responses for these diverse endpoints after acute, subchronic, and chronic administration are very similar if not identical for tetra-CCD. Based on toxicokinetic and toxicodynamic considerations, a new, possibly generalizable rule (average tissue concentration x time = toxicity) is derived for CDDs. Implicit in the relative potency arguments of CDDs is the requirement of a practical threshold dose for all endpoints of toxicity including cancer.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Carcinogenicity ; Chlorinated Dibenzo-p-dioxins ; Mixtures ; Porphyria ; Relative Potency ; Risk Assessment ; Threshold
ISSN (print) / ISBN 0300-483X
e-ISSN 0300-483X
Zeitschrift Toxicology
Quellenangaben Band: 77, Heft: 1-2, Seiten: 39-50 Artikelnummer: , Supplement: ,
Verlag Elsevier
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Molecular Toxicology and Pharmacology (TOXI)