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    Assessment of plasma microRNA potentials as a non-invasive biomarker in patients with axial spondyloarthropathy
    (Verduci Publisher, 2021) Yildirim, T.; Yesilada, E.; Eren, F.; Apaydin, H.; Gulbay, G.
    OBJECTIVE: It is assumed that abnormally expressed MicroRNAs (miRNAs) may be present in the plasma of patients with radiographic axial spondyloarthropathy (rad-AxSpA). Thus, the present study was conducted with the aim of investigating the expression profile of miRNAs in patients with rad-AxSpA. PATIENTS AND METHODS: A total of 15 patients diagnosed with rad-AxSpA according to the Assessment of the SpondyloArthritis International Society (ASAS) classification criteria and nine healthy controls matched for age and gender were included in the study. Demographic data was collected, and disease activity was evaluated using the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). Peripheral blood samples were collected, and miRNAs were extracted. The expression of microRNAs was analyzed using quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) by the miScript miRNA PCR Array Human Inflammatory Response and Autoimmunity. RESULTS: A total of 84 miRNA profiles were evaluated, and expressions in the study and control groups were compared. When compared to the control group, 6 miRNAs (miR-125b-5p, miR-144-3p, miR-19a-3p, miR-20a-5p, miR-29c-3p, miR-30b-5p) were detected to be upregulated, and 42 miRNAs were detected to be downregulated in the rad-AxSpA group. A p-value < 0.05 was accepted as statistically significant. A significant association was found between miR-145-5p and BASDAI (p = 0.04941). MiR-144-3p, miR-302b-3p, miR-381-3p, miR-497-5p, miR-511-5p, and miR-9-5p were found to be significantly upregulated in the HLA-B27+ patients (p = 0.03063). CONCLUSIONS: Abnormal miRNA expressions were detected in the plasma of the patients with rad-AxSpA. It was concluded that comprehensive studies should be continued to define these miRNAs as diagnostic biomarkers for rad-AxSpA in order to detect its association with Ankylosing Spondylitis disease activity.