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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Okada, Annabelle A. Sato, Yasuhiko Keino, Hiroshi Watanabe, Takayo |
| Description | Country affiliation: Japan Author Affiliation: Keino H ( Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan. keino@eye-center.org) |
| Abstract | PURPOSE: To determine whether synthetic retinoic acid receptor (RAR)- /ß-specific agonist Am80 reduces inflammation in experimental autoimmune uveoretinitis (EAU). METHODS: Naive CD4(+) T cells were activated with anti-CD3, anti-CD28, and transforming growth factor (TGF)-ß, in the presence or absence of Am80. Intracellular expression of forkhead box p3 (Foxp3) and interleukin (IL)-17 in the activated CD4(+) T cells was assessed by flow cytometry. For induction of EAU, C57BL/6 mice were immunized with human interphotoreceptor retinoid binding protein (IRBP) peptide 1 to 20 (IRBP(1-20)). Am80 was administered orally every other day (3 mg/kg/time point) from day 0 to day 21. In vivo primed draining lymph node cells from vehicle-treated or Am80-treated mice were stimulated with IRBP(1-20), and culture supernatant was harvested for assay of interferon (IFN)-γ, IL-6, IL-10, and IL-17. The expression of Foxp3 and IL-6 receptor in CD4(+) T cells of draining lymph node cells was assessed by a flow cytometer. RESULTS: Am80 synergized with TGF-ß to induce Foxp3(+) T regulatory cells (Treg) and reciprocally inhibited development of IL-17-producing T helper cells (Th17) induced by TGF-ß and IL-6. Am80 treatment reduced the severity of EAU clinically, and IFN-γ and IL-17 production was significantly reduced in Am80-treated mice. In addition, the expression of IL-6 receptor on CD4(+) T cells was downregulated in Am80-treated mice. CONCLUSIONS: These findings demonstrate that Am80 treatment ameliorates severity of EAU and reduces the Th1/Th17 responses. The synthetic retinoid Am80 appears to be a promising agent for preventing autoimmune uveoretinal inflammation. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 3 |
| Volume Number | 52 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2011-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Autoimmune Diseases Drug Therapy Benzoates Administration & Dosage Disease Models, Animal Receptors, Retinoic Acid Agonists Retinitis Tetrahydronaphthalenes Uveitis Administration, Oral Animals Genetics Immunology Cd4-positive T-lymphocytes Eye Proteins Flow Cytometry Forkhead Transcription Factors Metabolism Gene Expression Interleukin-17 Ligands Lymph Nodes Lymphocyte Activation Mice Mice, Inbred C57bl Nucleic Acid Hybridization Oligonucleotide Array Sequence Analysis Receptors, Interleukin-6 Retinol-binding Proteins Research Support, Non-u.s. Gov't Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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