Intra- and interlaboratory reliability of a cryopreserved trout hepatocyte assay for the prediction of chemical bioaccumulation potential

Fay, Kellie A; Mingoia, Robert T; Goeritz, Ina; Nabb, Diane L; Hoffman, Alex D; Ferrell, Barbra D; Peterson, Heather M; Nichols, John W; Segner, Helmut; Han, Xing (2014). Intra- and interlaboratory reliability of a cryopreserved trout hepatocyte assay for the prediction of chemical bioaccumulation potential. Environmental science & technology, 48(14), pp. 8170-8178. ACS Publications 10.1021/es500952a

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Measured rates of intrinsic clearance determined using cryopreserved trout hepatocytes can be extrapolated to the whole animal as a means of improving modeled bioaccumulation predictions for fish. To date, however, the intra- and interlaboratory reliability of this procedure has not been determined. In the present study, three laboratories determined in vitro intrinsic clearance of six reference compounds (benzo[a]pyrene, 4-nonylphenol, di-tert-butyl phenol, fenthion, methoxychlor and o-terphenyl) by conducting substrate depletion experiments with cryopreserved trout hepatocytes from a single source. O-terphenyl was excluded from the final analysis due to nonfirst-order depletion kinetics and significant loss from denatured controls. For the other five compounds, intralaboratory variability (% CV) in measured in vitro intrinsic clearance values ranged from 4.1 to 30%, while interlaboratory variability ranged from 27 to 61%. Predicted bioconcentration factors based on in vitro clearance values exhibited a reduced level of interlaboratory variability (5.3-38% CV). The results of this study demonstrate that cryopreserved trout hepatocytes can be used to reliably obtain in vitro intrinsic clearance of xenobiotics, which provides support for the application of this in vitro method in a weight-of-evidence approach to chemical bioaccumulation assessment.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Center for Fish and Wildlife Health (FIWI)

UniBE Contributor:

Segner, Helmut

Subjects:

600 Technology > 630 Agriculture

ISSN:

0013-936X

Publisher:

ACS Publications

Language:

English

Submitter:

Lucia Gugger-Raaflaub

Date Deposited:

30 Mar 2015 14:58

Last Modified:

12 Oct 2015 15:29

Publisher DOI:

10.1021/es500952a

PubMed ID:

24941452

BORIS DOI:

10.7892/boris.65498

URI:

https://boris.unibe.ch/id/eprint/65498

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