PMID- 36807334 OWN - NLM STAT- MEDLINE DCOM- 20230405 LR - 20230405 IS - 1600-0536 (Electronic) IS - 0105-1873 (Linking) VI - 88 IP - 5 DP - 2023 May TI - Retrospective quantitative risk assessment of skin sensitization caused by an antimicrobial agent used in a consumer product: 2,3,5,6-Tetrachloro-4-(methylsulfonyl) pyridine. PG - 395-401 LID - 10.1111/cod.14294 [doi] AB - BACKGROUND: Serious cases of allergic contact dermatitis (ACD) caused by exposure to 3,5,6-tetrachloro-4-(methylsulfonyl)pyridine (TCMSP; CAS no. 13108-52-6) used as an antimicrobial agent for desk mats have been reported in Japan. OBJECTIVE: A quantitative risk assessment (QRA) of TCMSP contained in desk mats was performed retrospectively. MATERIALS AND METHODS: A local lymph node assay (LLNA): BrdU-ELISA was conducted to determine a reliable EC1.6 value for TCMSP. The acceptable exposure level (AEL) for TCMSP was derived from the EC1.6 value by applying sensitization assessment factors (SAFs). The exposure level was estimated based on the assumption referring to the use conditions of thiabendazole in the same purpose. Then, the estimated exposure level was compared with the AEL to evaluate the skin sensitization risk. RESULTS: The AEL was calculated as 0.00458 mug/cm(2) based on the EC1.6 value (0.011%, 2.75 mug/cm(2) ) by applying a composite SAF of 600. The estimated TCMSP exposure level from the desk mat was 500 times greater than the AEL, indicating a serious skin sensitization risk. CONCLUSIONS: Assessments of skin sensitization potencies of chemicals to be used in consumer products are strongly recommended, and QRAs should be performed at the pre-marketing stage to avoid the skin sensitization risk in consumers. CI - (c) 2023 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Fukushima, Asako AU - Fukushima A AUID- ORCID: 0000-0001-8913-3173 AD - Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan, Tokyo, Japan. FAU - Morioka, Hisako AU - Morioka H AD - CERI Hita, Chemicals Evaluation and Research Institute, Japan, Hita-shi, Oita, Japan. FAU - Kobayashi, Toshio AU - Kobayashi T AD - CERI Hita, Chemicals Evaluation and Research Institute, Japan, Hita-shi, Oita, Japan. FAU - Katagiri, Ritsuko AU - Katagiri R AD - Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan, Tokyo, Japan. FAU - Tanabe, Aiko AU - Tanabe A AD - Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan, Tokyo, Japan. FAU - Sakunaga, Mayumi AU - Sakunaga M AD - Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan, Tokyo, Japan. FAU - Takeyoshi, Masahiro AU - Takeyoshi M AD - Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20230228 PL - England TA - Contact Dermatitis JT - Contact dermatitis JID - 7604950 RN - 0 (Anti-Infective Agents) RN - 0 (Pyridines) RN - 0 (Allergens) SB - IM MH - Humans MH - *Dermatitis, Allergic Contact/etiology MH - Retrospective Studies MH - Skin MH - Local Lymph Node Assay MH - *Anti-Infective Agents/adverse effects MH - Risk Assessment MH - Pyridines/adverse effects MH - Allergens/adverse effects OTO - NOTNLM OT - LLNA: BrdU-ELISA OT - TCMSP OT - acceptable exposure limits OT - allergic contact dermatitis OT - quantitative risk assessment OT - skin sensitization EDAT- 2023/02/23 06:00 MHDA- 2023/04/05 06:42 CRDT- 2023/02/22 11:34 PHST- 2023/02/09 00:00 [revised] PHST- 2022/11/16 00:00 [received] PHST- 2023/02/14 00:00 [accepted] PHST- 2023/04/05 06:42 [medline] PHST- 2023/02/23 06:00 [pubmed] PHST- 2023/02/22 11:34 [entrez] AID - 10.1111/cod.14294 [doi] PST - ppublish SO - Contact Dermatitis. 2023 May;88(5):395-401. doi: 10.1111/cod.14294. Epub 2023 Feb 28.