Combination Effect of Titrated Extract of Centella asiatica and Astaxanthin in a Mouse Model of Phthalic Anhydride-Induced Atopic Dermatitis
| Autor: | Ki Cheon Kim, Jun Sung Jang, In Jun Yeo, Ju Ho Park, Hee Pom Lee, Sang-Bae Han, Mi Hee Park, Jin Tae Hong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Pulmonary and Respiratory Medicine
Immunology Inflammation Pharmacology Immunoglobulin E digestive system NF-κB titrated extract of Centella asiatica Lesion 03 medical and health sciences 0302 clinical medicine medicine Immunology and Allergy 030223 otorhinolaryngology Centella biology atopic dermatitis business.industry Astaxanthin Interleukin Atopic dermatitis biology.organism_classification medicine.disease digestive system diseases Nitric oxide synthase 030228 respiratory system inflammation biology.protein Tumor necrosis factor alpha Original Article medicine.symptom business |
| Zdroj: | Allergy, Asthma & Immunology Research |
| ISSN: | 2092-7363 2092-7355 |
| Popis: | PURPOSE: In our previous study, we demonstrated that both titrated extract of Centella asiatica (TECA) and astaxanthin (AST) have anti-inflammatory effects in a 5% phthalic anhydride (PA) mouse model of atopic dermatitis (AD). The increasing prevalence of AD demands new therapeutic approaches for treating the disease. We investigated the therapeutic efficacy of the ointment form of TECA, AST and a TECA + AST combination in a mouse model of AD to see whether a combination of the reduced doses of 2 compounds could have a synergistic effect. METHODS: An AD-like lesion was induced by the topical application of 5% PA to the dorsal ear and back skin of an Hos:HR-1 mouse. After AD induction, TECA (0.5%), AST (0.5%) and the TECA (0.25%) + AST (0.25%) combination ointment (20 μg/cm(2)) were spread on the dorsum of the ear or back skin 3 times a week for 4 weeks. We evaluated dermatitis severity, histopathological changes and changes in protein expression by Western blotting for inducible nitric oxide synthase (iNOS), cyclocxygenase (COX)-2, and nuclear factor (NF)-κB activity. We also measured the concentrations of tumor necrosis factor (TNF)-α, interleukin (IL)-6 and immunoglobulin E (IgE) in the blood of AD mice by enzyme-linked immunosorbent assay (ELISA). RESULTS: PA-induced skin morphological changes and ear thickness were significantly reduced by TECA, AST and TECA + AST treatments, but these inhibiting effects were more pronounced in the TECA + AST treatment. TECA, AST and the TECA+AST reatments inhibited the expression of iNOS and COX-2; NF-κB activity; and the release of TNF-α, IL-6 and IgE. However, the TECA+AST treatment showed additive or synergistic effects on AD. CONCLUSIONS: Our results demonstrate that the combination of TECA and AST could be a promising therapeutic agent for AD by inhibiting NF-κB signaling. |
| Databáze: | OpenAIRE |
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