PMID- 21810022 OWN - NLM STAT- MEDLINE DCOM- 20120315 LR - 20160511 IS - 1945-0257 (Electronic) IS - 1945-0257 (Linking) VI - 15 IP - 11 DP - 2011 Nov TI - MicroRNA 146a expression in rheumatoid arthritis: association with tumor necrosis factor-alpha and disease activity. PG - 807-12 LID - 10.1089/gtmb.2011.0026 [doi] AB - AIM: MicroRNAs (miRNAs) regulate the expression of many genes and may be involved in regulating the immune response. Expression of microRNA 146a (miRNA 146a) in peripheral blood mononuclear cells was studied by real-time polymerase chain reaction in 70 patients with rheumatoid arthritis (RA), 45 patients with knee osteoarthritis (OA), and 60 healthy controls. Disease activity of RA was assessed using disease activity score (DAS) 28 and physical disability using the Improved Health Assessment Questionnaire. RESULTS: miRNA 146a expression was significantly higher in patients with RA than in those with OA and in controls (p<0.0001) but did not differ between the latter two groups (p=0.06). Tumor necrosis factor-alpha (TNF-alpha) was significantly higher in RA than in OA and controls (p<0.0001) and in OA than controls (p=0.001). In patients with RA, miRNA 146a positively correlated with TNF-alpha (p=0.0003), erythrocyte sedimentation rate (ESR) (p=0.022), and DAS 28 (p=0.009). miRNA 146a expression did not differ between patients with RA receiving anti TNF-alpha and those receiving conventional therapy (p>0.05). CONCLUSION: miRNA 146a expression is upregulated in patients with RA and may be a potentially useful marker of disease activity in these patients. Lack of overexpression of miRNA 146a in the presence of increased TNF-alpha in OA requires further investigation. FAU - Abou-Zeid, Abla AU - Abou-Zeid A AD - Department of Clinical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. aabouzeid4@yahoo.co.uk FAU - Saad, Mowaffak AU - Saad M FAU - Soliman, Eiman AU - Soliman E LA - eng PT - Clinical Trial PT - Journal Article DEP - 20110802 PL - United States TA - Genet Test Mol Biomarkers JT - Genetic testing and molecular biomarkers JID - 101494210 RN - 0 (Biomarkers) RN - 0 (MIRN146 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM CIN - Genet Test Mol Biomarkers. 2013 Feb;17(2):91-2. PMID: 23193967 MH - Adolescent MH - Adult MH - Arthritis, Rheumatoid/*metabolism/pathology MH - Biomarkers/metabolism MH - Female MH - *Gene Expression Regulation MH - Humans MH - Male MH - MicroRNAs/*biosynthesis MH - Middle Aged MH - Osteoarthritis, Knee/metabolism/pathology MH - Tumor Necrosis Factor-alpha/*biosynthesis EDAT- 2011/08/04 06:00 MHDA- 2012/03/16 06:00 CRDT- 2011/08/04 06:00 PHST- 2011/08/04 06:00 [entrez] PHST- 2011/08/04 06:00 [pubmed] PHST- 2012/03/16 06:00 [medline] AID - 10.1089/gtmb.2011.0026 [doi] PST - ppublish SO - Genet Test Mol Biomarkers. 2011 Nov;15(11):807-12. doi: 10.1089/gtmb.2011.0026. Epub 2011 Aug 2.