PMID- 22796097 OWN - NLM STAT- MEDLINE DCOM- 20130124 LR - 20220311 IS - 1879-3177 (Electronic) IS - 0887-2333 (Linking) VI - 26 IP - 7 DP - 2012 Oct TI - Prediction of skin sensitization potency of chemicals by human Cell Line Activation Test (h-CLAT) and an attempt at classifying skin sensitization potency. PG - 1150-60 LID - 10.1016/j.tiv.2012.07.001 [doi] AB - The human Cell Line Activation Test (h-CLAT), an in vitro skin sensitization test, is based on the augmentation of CD86 and CD54 expression in THP-1 cells following exposure to chemicals. The h-CLAT was found to be capable of determining the hazard of skin sensitization. In contrast, the local lymph node assay (LLNA), widely used as a stand-alone method in Europe and US, identifies the same hazard, but also classifies the potency by using the estimated concentration of SI=3 (EC3). In this study, several values calculated from the h-CLAT data were evaluated for its correlation to the LLNA EC3 determination. A statistically significant correlation was observed between h-CLAT concentration providing a cell viability of 75% (CV75), h-CLAT estimated concentration of RFI=150 for CD86 (EC150), and for CD54 (EC200) with LLNA's EC3. From EC150 and EC200, a minimum induction threshold (MIT) was determined as the smaller of either EC150 or EC200. MIT showed a correlation with EC3 (R=0.638). Also, MIT had an approximate 80% accuracy for sub-categories of the globally harmonized system (GHS) when a tentative threshold of 13 mug/mL was used. From these data, the h-CLAT values may be one of the useful tools to predict the allergic potency of chemicals. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Nukada, Yuko AU - Nukada Y AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi 321-3497, Japan. nukada.yuko@kao.co.jp FAU - Ashikaga, Takao AU - Ashikaga T FAU - Miyazawa, Masaaki AU - Miyazawa M FAU - Hirota, Morihiko AU - Hirota M FAU - Sakaguchi, Hitoshi AU - Sakaguchi H FAU - Sasa, Hitoshi AU - Sasa H FAU - Nishiyama, Naohiro AU - Nishiyama N LA - eng PT - Comparative Study PT - Journal Article DEP - 20120710 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 RN - 0 (Allergens) SB - IM MH - Allergens/classification/*toxicity MH - Animal Testing Alternatives/*methods MH - Cell Line, Tumor MH - Cell Survival/drug effects MH - Dermatitis, Contact/*etiology/immunology/pathology MH - Humans MH - Hypersensitivity/*etiology/immunology/pathology MH - Local Lymph Node Assay MH - Monocytes/*drug effects/immunology/pathology MH - Predictive Value of Tests MH - Reproducibility of Results MH - Risk Assessment MH - *Skin Irritancy Tests EDAT- 2012/07/17 06:00 MHDA- 2013/01/25 06:00 CRDT- 2012/07/17 06:00 PHST- 2012/02/28 00:00 [received] PHST- 2012/06/08 00:00 [revised] PHST- 2012/07/03 00:00 [accepted] PHST- 2012/07/17 06:00 [entrez] PHST- 2012/07/17 06:00 [pubmed] PHST- 2013/01/25 06:00 [medline] AID - S0887-2333(12)00192-0 [pii] AID - 10.1016/j.tiv.2012.07.001 [doi] PST - ppublish SO - Toxicol In Vitro. 2012 Oct;26(7):1150-60. doi: 10.1016/j.tiv.2012.07.001. Epub 2012 Jul 10.