PMID- 23499868 OWN - NLM STAT- MEDLINE DCOM- 20130610 LR - 20201209 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 269 IP - 1 DP - 2013 May 15 TI - Oleanolic acid acetate inhibits atopic dermatitis and allergic contact dermatitis in a murine model. PG - 72-80 LID - S0041-008X(13)00091-4 [pii] LID - 10.1016/j.taap.2013.03.001 [doi] AB - Atopic dermatitis (AD) and allergic contact dermatitis (ACD) are common allergic and inflammatory skin diseases caused by a combination of eczema, scratching, pruritus, and cutaneous sensitization with allergens. This paper examines whether oleanolic acid acetate (OAA) modulates AD and ACD symptoms by using an existing AD model based on the repeated local exposure of mite extract (Dermatophagoides farinae extract, DFE) and 2,4-dinitrochlorobenzene to the ears of BALB/c mice. In addition, the paper uses a 2,4-dinitrofluorobenzene-sensitized local lymph node assay (LLNA) for the ACD model. The oral administration of OAA over a four-week period attenuated AD symptoms in terms of decreased skin lesions, epidermal thickness, the infiltration of immune cells (CD4(+) cells, eosinophils, and mast cells), and serum IgE, IgG2a, and histamine levels. The gene expression of Th1, Th2, Th17, and Th22 cytokines was reduced by OAA in the lymph node and ear tissue, and the LLNA verified that OAA suppressed ACD. The oral administration of OAA over a three-day period attenuated ACD symptoms in terms of ear thickness, lymphocyte proliferation, and serum IgG2a levels. The gene expression of Th1, Th2, and Th17 cytokines was reduced by OAA in the thymus and ear tissue. Finally, to define the underlying mechanism, this paper uses a TNF-alpha/IFN-gamma-activated human keratinocyte (HaCaT) model. OAA inhibited the expression of cytokines and chemokines through the downregulation of NF-kappaB and MAPKs in HaCaT cells. Taken together, the results indicate that OAA inhibited AD and ACD symptoms, suggesting that OAA may be effective in treating allergic skin disorders. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Choi, Jin Kyeong AU - Choi JK AD - CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea. FAU - Oh, Hyun-Mee AU - Oh HM FAU - Lee, Soyoung AU - Lee S FAU - Park, Jin-Woo AU - Park JW FAU - Khang, Dongwoo AU - Khang D FAU - Lee, Seung Woong AU - Lee SW FAU - Lee, Woo Song AU - Lee WS FAU - Rho, Mun-Chual AU - Rho MC FAU - Kim, Sang-Hyun AU - Kim SH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130313 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Anti-Allergic Agents) RN - 0 (Antigens, Dermatophagoides) RN - 0 (Cytokines) RN - 0 (Dinitrochlorobenzene) RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 6SMK8R7TGJ (Oleanolic Acid) SB - IM MH - Administration, Oral MH - Animals MH - Anti-Allergic Agents/administration & dosage/*pharmacology MH - Antigens, Dermatophagoides MH - Cell Line MH - Cytokines/metabolism MH - Dermatitis, Allergic Contact/genetics/immunology/pathology/*prevention & control MH - Dermatitis, Atopic/genetics/immunology/pathology/*prevention & control MH - Dinitrochlorobenzene MH - Disease Models, Animal MH - Eosinophils/drug effects/immunology MH - Female MH - Gene Expression Regulation/drug effects MH - Humans MH - Inflammation Mediators/metabolism MH - Keratinocytes/drug effects/immunology MH - Local Lymph Node Assay MH - MAP Kinase Signaling System/drug effects MH - Mast Cells/drug effects/immunology MH - Mice MH - Mice, Inbred BALB C MH - NF-kappa B/metabolism MH - Oleanolic Acid/administration & dosage/*pharmacology MH - Skin/*drug effects/immunology/pathology MH - T-Lymphocytes/drug effects/immunology MH - Time Factors EDAT- 2013/03/19 06:00 MHDA- 2013/06/12 06:00 CRDT- 2013/03/19 06:00 PHST- 2012/11/23 00:00 [received] PHST- 2013/02/26 00:00 [revised] PHST- 2013/03/01 00:00 [accepted] PHST- 2013/03/19 06:00 [entrez] PHST- 2013/03/19 06:00 [pubmed] PHST- 2013/06/12 06:00 [medline] AID - S0041-008X(13)00091-4 [pii] AID - 10.1016/j.taap.2013.03.001 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2013 May 15;269(1):72-80. doi: 10.1016/j.taap.2013.03.001. Epub 2013 Mar 13.