PMID- 21782719 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20121002 LR - 20110725 IS - 1382-6689 (Print) IS - 1382-6689 (Linking) VI - 17 IP - 2 DP - 2004 Jun TI - Evaluation of lymphocyte subpopulations in draining lymph node cells following allergen and irritant. PG - 95-102 LID - 10.1016/j.etap.2004.03.006 [doi] AB - The murine local lymph node assay (LLNA) has been developed as an alternative to guinea pig models for the assessment of the contact sensitization potential. However, there is a need to develop a non-radioisotopic endpoint for the LLNA, because of the radioisotopic method's requiring the use of special facilities. In this study, we investigated to evaluate the lymphocyte subpopulations in the lymph node cells following allergen and irritant treatment. Female Balb/c mice were treated by the topical application on the dorsum of both ears with sensitizers, 2,4-dinitrochlorobenzene (DNCB), toluene diisocyanate (TDI), and alpha-hexylcinnamaldehyde (HCA), and an irritant, sodium lauryl sulfate (SLS), once daily for three consecutive days. The lymph node (LN) cells were harvested 72h after the final treatment. Phenotypic analysis of lymphocytes subsets was performed with a flow cytometry. The allergens DNCB, TDI, and HCA and an irritant, SLS increased cell number compared to the vehicle. Mice were treated with DNCB, HCA, and TDI showed a preferential increase in the percentage of B220+CD40+ cells compared with vehicle and irritant-treated mice. There was an increase in B220+CD86+ cells of mice treated with DNCB, TDI, and HCA, but no significant increases were observed in mice treated with SLS. Mice were treated with DNCB and TDI showed an increase in the percentage of B220+CD23+ cells compared with vehicle and irritant-treated mice. These results suggest that analysis of B cell activation marker, CD40 on B cells may be useful in differentiating allergen and irritant responses in the draining lymph nodes of chemically treated mice. FAU - Lee, Jong Kwon AU - Lee JK AD - Division of Immunotoxicology, National Institute of Toxicology Research, Korea Food and Drug Administration, 122-704 Seoul, South Korea. FAU - Hee Park, Seung AU - Hee Park S FAU - Byun, Jung A AU - Byun JA FAU - Kim, Hyung Soo AU - Kim HS FAU - Oh, Hye Young AU - Oh HY LA - eng PT - Journal Article PL - Netherlands TA - Environ Toxicol Pharmacol JT - Environmental toxicology and pharmacology JID - 9612020 EDAT- 2004/06/01 00:00 MHDA- 2004/06/01 00:01 CRDT- 2011/07/26 06:00 PHST- 2004/01/12 00:00 [received] PHST- 2004/03/24 00:00 [accepted] PHST- 2004/01/12 00:00 [received] PHST- 2004/03/24 00:00 [accepted] PHST- 2011/07/26 06:00 [entrez] PHST- 2004/06/01 00:00 [pubmed] PHST- 2004/06/01 00:01 [medline] AID - S1382-6689(04)00064-X [pii] AID - 10.1016/j.etap.2004.03.006 [doi] PST - ppublish SO - Environ Toxicol Pharmacol. 2004 Jun;17(2):95-102. doi: 10.1016/j.etap.2004.03.006.