| Effect of Tacrolimus on Chemokine Production by Corneal Myofibroblasts via Toll-Like Receptors, Compared With Cyclosporine and Dexamethasone. | |
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MedLine Citation:
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PMID: 21282993 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE:: To investigate the effect of tacrolimus on chemokine production by corneal myofibroblasts compared with that of cyclosporine or dexamethasone. METHODS:: We investigated the expression of FK506-binding protein 12, calcineurin, and nuclear factor of activated T cells in corneal myofibroblasts by immunocytochemistry and flow cytometry. Next, we investigated whether toll-like receptor 9 ligand, CpG-DNA, or toll-like receptor 3 ligand, poly (I:C), induced the production of chemokines such as interleukin (IL) 8, Gro-α, and IL-6 by corneal myofibroblasts using enzyme-linked immunosorbent assay. Finally, we assessed the effect of tacrolimus on the production of these chemokines compared with that of cyclosporine or dexamethasone. RESULTS:: FK506-binding protein 12, calcineurin, and nuclear factor of activated T cells were constantly expressed by cultured corneal myofibroblasts. CpG DNA and poly (I:C) enhanced the production of IL-8, Gro-α, and IL-6 by corneal myofibroblasts. At a concentration 10 nM/L or higher, dexamethasone strongly inhibited the production of these chemokines. In contrast, cyclosporine concentrations of 10 ng/mL or more enhanced the production of these chemokines by cells stimulated with poly (I:C). On the other hand, tacrolimus (at 10 ng/mL or more) inhibited the production of these chemokines by corneal myofibroblasts stimulated with poly (I:C) but not with CpG-DNA. CONCLUSIONS:: These results suggest that tacrolimus and dexamethasone, but not cyclosporine, have a direct immunosuppressive effect on corneal myofibroblasts. Therefore, when inflammatory diseases of the ocular surface are treated by tacrolimus, especially in combination with steroids, caution with regard to the risk of corneal infection may be needed. |
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Authors:
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Nobuyuki Ebihara; Kaori Ohtomo; Tomoko Tokura; Hiroko Ushio; Akira Murakami |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-1-27 |
Journal Detail:
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Title: Cornea Volume: - ISSN: 1536-4798 ISO Abbreviation: - Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-2-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8216186 Medline TA: Cornea Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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From the *Department of Ophthalmology and †Allergy Research Center, Juntendo University School of Medicine, Tokyo, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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