Journal
INTERNATIONAL JOURNAL OF MEDICAL SCIENCES
Volume 14, Issue 7, Pages 622-628Publisher
IVYSPRING INT PUBL
DOI: 10.7150/ijms.18972
Keywords
miRNA; centenarians; autoimmune diseases; glucocorticoids
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Funding
- Regione Autonoma della Sardegna [L.R. 7/2007]
- MIUR Progetti di Ricerca di Rilevante Interesse Nazionale - PRIN [20157ATSLF_002]
- Fondazione Banco di Sardegna [998/2007.0729, 906/2012-1046]
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Micro-RNA (miRNA) are a family of small non-coding ribonucleic acids that inhibits post-transcriptionally the expression of their target messenger RNA (mRNA). We are interested in studying the involvement of miRNA in longevity and autoimmune diseases. In this study we compared the different expression of seven microRNAs between human plasma healthy controls, plasma samples of centenarians and samples from patients with rheumatoid arthritis. We used the Life Technologies' protocol to quantify seven miRNAs from 62 plasma samples: 20 healthy human controls, 14 centenarians, 28 patients with rheumatoid arthritis. TaqMan MicroRNA assays were used to analyze the expression profiles of miR-125b-5p, miR-425-5p, miR-200b5p, miR-200c-3p, miR-579-3p, miR-212-3p, miR-21-5p and miR-126-3p. The relative expression of mature miRNAs was analyzed using software REST. Our results show that miR-425-5p, miR-21 and miR-212 significantly decreased in centenarians and in patients with rheumatoid arthritis compared with controls. Furthermore in this work we highlight a connection between corticosteroid treatment and miRNAs expression.
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