The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.
Expression of microRNA‐146 in rheumatoid arthritis synovial tissue
Open accessAbstract
Objective: Several microRNA, which are ∼22‐nucleotide noncoding RNAs, exhibit tissue‐specific or developmental stage–specific expression patterns and are associated with human diseases. The objective of this study was to identify the expression pattern of microRNA‐146 (miR‐146) in synovial tissue from patients with rheumatoid arthritis (RA). Methods: The expression of miR‐146 in synovial tissue from 5 patients with RA, 5 patients with osteoarthritis (OA), and 1 normal subject was analyzed by quantitative reverse transcription–polymerase chain reaction (RT‐PCR) and by in situ hybridization and immunohistochemistry of tissue sections. Induction of miR‐146 following stimulation with tumor necrosis factor α (TNFα) and interleukin‐1β (IL‐1β) of cultures of human rheumatoid arthritis synovial fibroblasts (RASFs) was examined by quantitative PCR and RT‐PCR. Results: Mature miR‐146a and primary miR‐146a/b were highly expressed in RA synovial tissue, which also expressed TNFα, but the 2 microRNA were less highly expressed in OA and normal synovial tissue. In situ hybridization showed primary miR‐146a expression in cells of the superficial and sublining layers in synovial tissue from RA patients. Cells positive for miR‐146a were primarily CD68+ macrophages, but included several CD3+ T cell subsets and CD79a+ B cells. Expression of miR‐146a/b was markedly up‐regulated in RASFs after stimulation with TNFα and IL‐1β. Conclusion: This study shows that miR‐146 is expressed in RA synovial tissue and that its expression is induced by stimulation with TNFα and IL‐1β. Further studies are required to elucidate the function of miR‐146 in these tissues.
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Metadata
- Authors
- Nakasa, T., Miyaki, S., Okubo, A., Hashimoto, M., Nishida, K., Ochi, M., & Asahara, H.
- Venue
- Arthritis & Rheumatism
- Publisher
- Wiley
- Published
- 2008-04-25
- Volume
- 58
- Issue
- 5
- Pages
- 1284-1292
- ISSN
- 0004-3591 (ISSN-L)
- 1529-0131
- OpenAlex
- W1974976948
- Cited by
- 678
- References
- 37
- FWCI
- 33.29
- Type
- journal article
- Language
- en
- Open access
- green
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