PMID- 26291892 OWN - NLM STAT- MEDLINE DCOM- 20160113 LR - 20181113 IS - 1528-7394 (Print) IS - 0098-4108 (Linking) VI - 78 IP - 17 DP - 2015 TI - Investigations into the Immunotoxicity and Allergic Potential Induced by Topical Application of N-Butylbenzenesulfonamide (NBBS) in a Murine Model. PG - 1122-32 LID - 10.1080/15287394.2015.1056898 [doi] AB - N-Butylbenzene sulfonamide (NBBS) is a commonly used plasticizer found in numerous products. Due to its extensive use, lack of adequate toxicological data, and suspicion of toxicity based on the presence of structural alerts, it was nominated to the National Toxicology Program for comprehensive toxicological testing. The purpose of this study was to evaluate the potential for hypersensitivity and immune suppression following dermal exposure to NBBS using a murine model. NBBS tested negative in a combined irritancy/local lymph node assay (LLNA), classifying it as nonirritating and nonsensitizing. To estimate the immunosuppressive potential of NBBS, assays that assessed immunotoxicity were performed, including the immumnoglobulin (Ig) M response to T-cell-dependent antigen sheep red blood cells (SRBC), using the plaque-forming cell (PFC) assay and immune cell phenotyping. After a 28-d treatment with NBBS, mice exposed to the lowest concentration (25% NBBS) showed a significant increase in IgM-producing B cells in the spleen. No marked changes were identified in immune cell markers in the lymph node. In contrast to body weight, a significant elevation in kidney and liver weight was observed following dermal exposure to all concentrations of NBBS. These results demonstrate that dermal exposure to NBBS, other than liver and kidney toxicity, did not apparently induce immunotoxicity in a murine model. FAU - Marrocco, Antonella AU - Marrocco A AD - a National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA. FAU - Meade, B Jean AU - Meade BJ AD - a National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA. FAU - Long, Carrie M AU - Long CM AD - a National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA. FAU - Lukomska, Ewa AU - Lukomska E AD - a National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA. FAU - Marshall, Nikki B AU - Marshall NB AD - a National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA. FAU - Anderson, Stacey E AU - Anderson SE AD - a National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA. LA - eng GR - CC999999/Intramural CDC HHS/United States PT - Journal Article DEP - 20150820 PL - England TA - J Toxicol Environ Health A JT - Journal of toxicology and environmental health. Part A JID - 100960995 RN - 0 (Immunoglobulin G) RN - 0 (Immunosuppressive Agents) RN - 0 (Plasticizers) RN - 0 (Sulfonamides) RN - YO7UAW6717 (N-butylbenzenesulfonamide) SB - IM MH - Administration, Cutaneous MH - Animals MH - Female MH - Immunoglobulin G/immunology MH - Immunosuppressive Agents/pharmacology MH - Lymph Nodes/immunology MH - Mice MH - Mice, Inbred BALB C MH - Plasticizers/*toxicity MH - Sheep MH - Spleen/drug effects/immunology MH - Sulfonamides/*toxicity MH - T-Lymphocytes/drug effects/immunology MH - Toxicity Tests PMC - PMC4605868 MID - NIHMS718276 OID - NLM: HHSPA718276 COIS- The authors declare no conflicts of interest. EDAT- 2015/08/21 06:00 MHDA- 2016/01/14 06:00 PMCR- 2015/10/14 CRDT- 2015/08/21 06:00 PHST- 2015/08/21 06:00 [entrez] PHST- 2015/08/21 06:00 [pubmed] PHST- 2016/01/14 06:00 [medline] PHST- 2015/10/14 00:00 [pmc-release] AID - 10.1080/15287394.2015.1056898 [doi] PST - ppublish SO - J Toxicol Environ Health A. 2015;78(17):1122-32. doi: 10.1080/15287394.2015.1056898. Epub 2015 Aug 20.