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Open Access The study on knee osteoarthritis in diabetic patients based on nanometric magnetic bead method

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To study the levels of inflammatory cytokines in synovia fluid from osteoarthritis (OA) patients with/without type 2 diabetes mellitus (T2D). Out of 74 volunteers aged 20–88 years, 64 with knee OA (Kellgren-Lawrence grades over I) were recruited and divided into groups with (n = 20) and without (n = 44) diabetes. The nucleic acid of the patient tissue was extracted by nanometer magnetic bead method. The remaining participants were the control group (n = 10). Synovia fluid, sera, and peripheral blood mononuclear cell (PBMC) samples were collected from all participants and analyzed using ELISA Kits. T2D-OA patients and OA patients had higher basal production of interleukin-1, (IL-1), interleukin-6 (IL-6), and lower-level interleukin-10 (IL-10). However, there were no differences between T2D-OA and OA patients. IL-1, IL-10, and IL-6 in peripheral blood mononuclear cells (PBMCs) after stimulation with LPS were obviously up-regulated in both patients and controls. The production of IL-1 and IL-6 in synovia from T2D-OA and OA patients increased as in the case of variations in sera and PBMCs. Both T2D-OA and OA patients had high-levels of IL-1 and IL-6 compared with controls, especially IL-6. The presence of IL-10 could not be detected in synovia from both patients and controls. Our results suggested that OA patient also had some pro-inflammatory factors in vivo, especially in local lesion; this manifest was particularly evident in T2D-OA patients. The high-level concentration of pro-inflammatory cytokines and low-level anti-inflammatory factors could be one of the reasons why T2D-OA patients are prone to developing synovitis.
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Keywords: INFLAMMATORY CYTOKINE; INTERLEUKIN-6; OSTEOARTHRITIS; TYPE 2 DIABETES

Document Type: Research Article

Publication date: August 1, 2020

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