On reference dose (RfD) and its underlying toxicity data base

Dourson, ML; Knauf, LA; Swartout, JC

HERO ID

4400

Reference Type

Journal Article

Year

1992

Language

English

PMID

1502696

HERO ID 4400
In Press No
Year 1992
Title On reference dose (RfD) and its underlying toxicity data base
Authors Dourson, ML; Knauf, LA; Swartout, JC
Journal Toxicology and Industrial Health
Volume 8
Issue 3
Page Numbers 171-189
Abstract The toxicity data of pesticides were summarized and compared amongst different animal species and types of bioassays. These comparisons showed the expected inter-species and inter-bioassay variability. After quantitative and statistical analysis of these data, it was concluded that, on the average, a 2-year dog bioassay detected toxic responses at similar doses as a 2-year rat study, and that both of these bioassays detected toxic responses at lower doses than either a rat 2-generation bioassay, a rat developmental toxicity study, or a 2-year mouse bioassay. Although these chronic dog and rat bioassays were found to detect toxic responses at lower doses than the other studies listed, this analysis does not reflect the seriousness of the effects that were compared. Within the confines of this analysis, then, it appears that a 2-year dog and rat study, reproductive and developmental bioassays are a sufficient data base on which to estimate high confidence Reference Doses (RfDs), and furthermore, that an additional uncertainty factor is needed to estimate RfDs to account for this inter-species and inter-bioassay variability when fewer than this number of bioassays are available.
Doi 10.1177/074823379200800304
Pmid 1502696
Wosid WOS:A1992JF74800004
Is Certified Translation No
Dupe Override No
Is Public Yes
Language Text English