PMID- 28343035 OWN - NLM STAT- MEDLINE DCOM- 20170829 LR - 20191008 IS - 1873-6351 (Electronic) IS - 0278-6915 (Print) IS - 0278-6915 (Linking) VI - 105 DP - 2017 Jul TI - Evaluation of 4-methylcyclohexanemethanol (MCHM) in a combined irritancy and Local Lymph Node Assay (LLNA) in mice. PG - 99-105 LID - S0278-6915(17)30129-1 [pii] LID - 10.1016/j.fct.2017.03.034 [doi] AB - 4-Methylcyclohexanemethanol (MCHM) is a flotation reagent used in fine coal beneficiation. On January 9, 2014, crude MCHM, a mixture containing predominantly MCHM, was inadvertently released into the Elk River, a municipal water source that serves about 300,000 people in the Charleston, WV area, resulting in temporary contamination of 15 percent of the state's tap water and causing significant dermal exposure. The current studies were undertaken to determine whether crude MCHM or MCHM has the potential to produce dermal irritancy and/or sensitization. BALB/c female mice were treated daily for 3 consecutive days by direct epicutaneous application of 25 muL of various concentrations of crude MCHM or MCHM to the dorsum of each ear. A mouse ear-swelling test was used to determine irritancy potential and was undertaken in combination with the standardized Local Lymph Node Assay (LLNA) to determine skin sensitizing potential. MCHM was found to produce skin irritation at concentrations above 20% and did not produce sensitization. Crude MCHM also produced irritation, although weaker, and in addition was found to be a weak to moderate skin sensitizer. The results are discussed in terms of potential human health hazard. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Johnson, Victor J AU - Johnson VJ AD - Burleson Research Technologies, Inc., Morrisville, NC, USA. Electronic address: vjohnson@brt-labs.com. FAU - Auerbach, Scott S AU - Auerbach SS AD - National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA. FAU - Luster, Michael I AU - Luster MI AD - Burleson Research Technologies, Inc., Morrisville, NC, USA. FAU - Waidyanatha, Suramya AU - Waidyanatha S AD - National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA. FAU - Masten, Scott A AU - Masten SA AD - National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA. FAU - Wolfe, Mary S AU - Wolfe MS AD - National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA. FAU - Burleson, Florence G AU - Burleson FG AD - Burleson Research Technologies, Inc., Morrisville, NC, USA. FAU - Burleson, Gary R AU - Burleson GR AD - Burleson Research Technologies, Inc., Morrisville, NC, USA. FAU - Germolec, Dori R AU - Germolec DR AD - National Toxicology Program, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA. LA - eng GR - HHSN273201400017C/ES/NIEHS NIH HHS/United States GR - Z99 ES999999/Intramural NIH HHS/United States PT - Journal Article DEP - 20170322 PL - England TA - Food Chem Toxicol JT - Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association JID - 8207483 RN - 0 (Cyclohexanes) RN - 0 (Irritants) RN - 0 (Water Pollutants, Chemical) RN - 1558K6RHM3 (4-methylcyclohexanemethanol) SB - IM MH - Animals MH - Cyclohexanes/analysis/*toxicity MH - Dermatitis, Allergic Contact/*etiology MH - Female MH - Humans MH - Irritants/analysis/*toxicity MH - Local Lymph Node Assay MH - Mice MH - Mice, Inbred BALB C MH - Skin Irritancy Tests MH - Water Pollutants, Chemical/analysis/toxicity PMC - PMC5594409 MID - NIHMS866580 OTO - NOTNLM OT - 4-Methylcyclohexanemethanol OT - Allergic contact OT - Dermal hypersensitivity OT - Dermal irritancy OT - Dermatitis (ACD) OT - Elk River spill OT - Local Lymph Node Assay (LLNA) COIS- The authors do not have any conflicts of interest to disclose. EDAT- 2017/03/28 06:00 MHDA- 2017/08/30 06:00 PMCR- 2018/07/01 CRDT- 2017/03/27 06:00 PHST- 2016/12/07 00:00 [received] PHST- 2017/03/02 00:00 [revised] PHST- 2017/03/21 00:00 [accepted] PHST- 2017/03/28 06:00 [pubmed] PHST- 2017/08/30 06:00 [medline] PHST- 2017/03/27 06:00 [entrez] PHST- 2018/07/01 00:00 [pmc-release] AID - S0278-6915(17)30129-1 [pii] AID - 10.1016/j.fct.2017.03.034 [doi] PST - ppublish SO - Food Chem Toxicol. 2017 Jul;105:99-105. doi: 10.1016/j.fct.2017.03.034. Epub 2017 Mar 22.