PMID- 23149289 OWN - NLM STAT- MEDLINE DCOM- 20130614 LR - 20201209 IS - 1872-7573 (Electronic) IS - 0378-8741 (Linking) VI - 145 IP - 1 DP - 2013 Jan 9 TI - Indirubin, a purple 3,2- bisindole, inhibited allergic contact dermatitis via regulating T helper (Th)-mediated immune system in DNCB-induced model. PG - 214-9 LID - S0378-8741(12)00752-0 [pii] LID - 10.1016/j.jep.2012.10.055 [doi] AB - ETHNOPHARMACOLOGICAL RELEVANCE: Indirubin, isolated from Indigo naturalis (Apiaceae) is a purple 3,2- bisindole and a stable isomer of indigo. Although it is known to have anti-inflammatory activities, its mechanism of action has not been elucidated. MATERIALS AND METHODS: Seven-week-old female BALB/c mice were sensitized with 1-chloro-2,4-dinitrobenzene (DNCB) to induce skin inflammation. Hematoxylin and eosin staining was performed to assess epidermal and dermal hyperplasia, which were determined by measuring the thicknesses of the epidermis and dermis, respectively. We also evaluated serum immunoglobulin E (IgE) levels and cytokines production, such as tumor necrosis factor (TNF)-alpha, interleukin (IL)-4, 6 and Interferon (IFN)-gamma. In addition, we investigated nuclear factor (NF)-kappaB, IkappaB-alpha and mitogen-activated protein (MAP) kinase activities for verifying the molecular mechanism of inflammation. RESULTS: Indirubin treatment suppressed skin inflammation in DNCB-exposed mice. The skin lesions were significantly thinner in the Indirubin-treated group than in untreated controls, and the hyperkeratosis disappeared. Indirubin reduced the total serum IgE level and cytokines production. In addition, it normalized NF-kappaB, IkappaB-alpha and MAP kinase expression. CONCLUSIONS: Indirubin might be a useful treatment for allergic contact dermatitis via regulating the co-expression of T helper (Th) 1 and 2 cell-mediated immune responses. CI - Copyright (c) 2012 Elsevier Ireland Ltd. All rights reserved. FAU - Kim, Mi Hye AU - Kim MH AD - Department of Prescriptionology, College of Oriental Medicine, Institute of Oriental Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea. FAU - Choi, You Yeon AU - Choi YY FAU - Yang, Gabsik AU - Yang G FAU - Cho, Ik-Hyun AU - Cho IH FAU - Nam, Dongwoo AU - Nam D FAU - Yang, Woong Mo AU - Yang WM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121110 PL - Ireland TA - J Ethnopharmacol JT - Journal of ethnopharmacology JID - 7903310 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Cytokines) RN - 0 (Dinitrochlorobenzene) RN - 0 (I-kappa B Proteins) RN - 0 (Indoles) RN - 0 (NF-kappa B) RN - 37341-29-0 (Immunoglobulin E) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - V86L8P74GI (indirubin) SB - IM MH - Animals MH - Anti-Inflammatory Agents/pharmacology/*therapeutic use MH - Cytokines/metabolism MH - Dermatitis, Allergic Contact/blood/*drug therapy/pathology MH - Dinitrochlorobenzene MH - Disease Models, Animal MH - Female MH - Hyperplasia/chemically induced/pathology MH - I-kappa B Proteins/metabolism MH - Immune System/*drug effects/metabolism MH - Immunoglobulin E/metabolism MH - Indoles/pharmacology/therapeutic use MH - Inflammation/*drug therapy/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Mitogen-Activated Protein Kinases/metabolism MH - NF-kappa B/metabolism MH - T-Lymphocytes, Helper-Inducer/*drug effects/metabolism EDAT- 2012/11/15 06:00 MHDA- 2013/06/15 06:00 CRDT- 2012/11/15 06:00 PHST- 2012/09/14 00:00 [received] PHST- 2012/10/29 00:00 [revised] PHST- 2012/10/29 00:00 [accepted] PHST- 2012/11/15 06:00 [entrez] PHST- 2012/11/15 06:00 [pubmed] PHST- 2013/06/15 06:00 [medline] AID - S0378-8741(12)00752-0 [pii] AID - 10.1016/j.jep.2012.10.055 [doi] PST - ppublish SO - J Ethnopharmacol. 2013 Jan 9;145(1):214-9. doi: 10.1016/j.jep.2012.10.055. Epub 2012 Nov 10.