PMID- 35345861 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220330 IS - 2214-7500 (Electronic) IS - 2214-7500 (Linking) VI - 9 DP - 2022 TI - Local lymph node assay: 5-bromo-d-deoxyuridine-ELISA method for comparative study in assessing chemical potencies and skin sensitization in BALB/c and CBA/J strains. PG - 499-504 LID - 10.1016/j.toxrep.2022.03.017 [doi] AB - Local lymph node assay (LLNA) is a predictive in vivo method to provide estimates of relative potency and to contribute to risk assessment/risk management regarding skin sensitizing potency of chemicals and formulations as a stand-alone alternative test. In addition, LLNA is relatively rapid and cost-effective compared to the Buehler method (Guinea pig test), and confers important animal welfare benefits. CBA/J and BALB/c strains are widely commercially available and have been evaluated by formal LLNA validation studies. However, the LLNA method using BrdU with ELISA, unlike other LLNA methods (OECD TG 429, 442 A, 442B), has not been previously validated. Therefore, in this study a validation method was performed to evaluate if the LLNA:BrdU-ELISA method could also be used to identify sensitizers among chemicals listed in OECD TG 429 using CBA/J and BALB/c strains. Here, we newly found that the LLNA:BrdU-ELISA validation method correctly identified 12 of 13 sensitizers in the BALB/c, 11 of 13 sensitizers in the CBA/J, and 3 of 5 non-sensitizers were identified in the two strains. Collectively, we found that the results of LLNA:BrdU-ELISA method provide a similar level of performance for accuracy and sensitivity in two mouse strains BALB/c and CBA/J. CI - (c) 2022 The Authors. FAU - Oh, Jeong-Ja AU - Oh JJ AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Park, Eun-Sung AU - Park ES AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Kim, Seong-Sook AU - Kim SS AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Lee, Min-Seung AU - Lee MS AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Lee, Woo-Joo AU - Lee WJ AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Pak, Bum-Su AU - Pak BS AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Kim, Min-Sub AU - Kim MS AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Lee, Hyun-Kul AU - Lee HK AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Song, Si-Whan AU - Song SW AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. FAU - Kim, Sun-Don AU - Kim SD AD - Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea. LA - eng PT - Journal Article DEP - 20220321 PL - Ireland TA - Toxicol Rep JT - Toxicology reports JID - 101630272 PMC - PMC8956910 OTO - NOTNLM OT - BALB/c OT - CBA/J OT - LLNA:BrdU-ELISA method OT - Local lymph node assay OT - Skin sensitization COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/03/30 06:00 MHDA- 2022/03/30 06:01 PMCR- 2022/03/21 CRDT- 2022/03/29 05:15 PHST- 2021/09/10 00:00 [received] PHST- 2022/03/10 00:00 [revised] PHST- 2022/03/17 00:00 [accepted] PHST- 2022/03/29 05:15 [entrez] PHST- 2022/03/30 06:00 [pubmed] PHST- 2022/03/30 06:01 [medline] PHST- 2022/03/21 00:00 [pmc-release] AID - S2214-7500(22)00046-4 [pii] AID - 10.1016/j.toxrep.2022.03.017 [doi] PST - epublish SO - Toxicol Rep. 2022 Mar 21;9:499-504. doi: 10.1016/j.toxrep.2022.03.017. eCollection 2022.