Expression and clinical significance of long noncoding RNA AJ227913 in patients with gouty arthritis

Objective To investigate the role of long noncoding RNA-AK001903 in the pathogenesis of primary gout arthritis(GA). Methods The subjects were divided into four groups: 30 acute gout patients(AGA), 24 non-acute gout patients(NAGA), 24 healthy controls and 24 hyperuricemia(HUA). Real-time quantitative polymerase chain reaction (RT-qPCR) was employed to examine the expression of AK001903 in peripheral blood mononuclear cells (PBMCs) from four groups. 100 μg/ml monosodium (MSU) was used to stimulate the peripheral blood of NAGA and healthy control patients. Then the expression of AK001903 was detected by RT-qPCR. Kruskal-Wallis test, Mann-Whitney test, Spearman correlations were used for statistical analysis. Results The expression level of AK001903 in the AGA group (0.079±0.022) and the NAGA group (0.071±0.021) were higher than the healthy control group (0.014±0.004). There was no significant difference between the NAGA group and the NAGA group (Z=-0.655, P>0.05). Those of the GA group (0.078±0.018) and the HUA group(0.047±0.016) was higher than the healthy control group (0.014±0.004) (Z=-2.887, Z=-4.157; P<0.05). Compared with the control group, the expression of AK001903 in NAGA and the healthy control group which were stimulated by MSU was significantly increased. The Spearman correlation analysis found that the AK001903 expression levels in the GA groups were correlated with TG (r=0.938, P<0.05), VLDL (r=0.873, P<0.05), GLU9 (r=0.671, P<0.05) and were negatively correlated with apoA1 (r=-0.661, P<0.05). Conclusion Altered expression of AK001903 may be involved in the process of imbalance between lipid metabolism and hyperuricemia, and takes part in the pathogenesis of GA. Key words: Arthritis, gouty; Peripheral blood mononuclear cells; Long noncoding RNA; Monoso-dium urate