抑郁症患者外周血中miR-15b、miR-503表达水平及其与认知功能的关系

Expression of miR-15b and miR-503 in peripheral blood and their relationship with cognitive function in patients with depression

目的探讨抑郁症患者外周血中微小RNA(microRNA,miR)-15b、miR-503表达水平及其与认知功能的关系。方法选取2023年1月至2024年6月绍兴市第七人民医院收治并确诊的103例抑郁症患者作为研究组,另选取同期94名健康体检者作为对照组。采用蒙特利尔认知评估量表(Montreal cognitive assessment,Mo CA)评估抑郁症患者的认知功能,并分为认知功能正常组(n=68)和认知功能障碍组(n=35)。采用Pearson法分析miR-15b、miR-503表达水平与认知功能的相关性;受试者操作特征曲线(receiver operating characteristic curve,ROC曲线)分析miR-15b、miR-503水平对抑郁症患者认知功能障碍的诊断价值。结果研究组患者外周血中miR-15b、miR-503水平均低于对照组(P<0.05);认知功能障碍组患者外周血中miR-15b、miR-503水平均低于认知功能正常组(P<0.05);认知功能正常组患者的MoCA、简易精神状态检查量表评分高于认知功能障碍组(P<0.05);Pearson分析结果显示,抑郁症患者外周血中miR-15b、miR-503水平与Mo CA评分呈显著正相关(r=0.635、0.668,P<0.05);miR-15b单独诊断抑郁症患者认知功能障碍的曲线下面积(area under the curve,AUC)为0.836(95%CI:0.750~0.902),敏感度、特异性分别为77.14%、89.71%;miR-503单独诊断抑郁症患者认知功能障碍的AUC为0.892(95%CI:0.816~0.945),敏感度、特异性分别为80.00%、88.24%;miR-15b和miR-503联合诊断的AUC显著大于miR-15b、miR-503单独诊断。结论miR-15b、miR-503在抑郁症患者中表达降低,二者对抑郁症患者认知功能障碍的诊断价值较高。

Objective To investigate the expression of microRNA(miR)-15b and miR-503 in peripheral blood in patients with depression and their relationship with cognitive function.Methods A total of 103 patients with depression admitted and diagnosed in Shaoxing Seventh People’s Hospital from January 2023 to June 2024 were set as study group,and 94 healthy participants were selected as control group.The cognitive function of patients with depression was evaluated by Montreal cognitive assessment(MoCA),and the patients in study group were divided into normal cognitive function group(n=68)and cognitive dysfunction group(n=35).Pearson method was used to analyze the correlation between the expression level of miR-15b,miR-503 and cognitive function;The diagnostic value of miR-15b and miR-503 for cognitive dysfunction in patients with depression was analyzed by using receiver operating characteristic(ROC)curve.Results miR-15b and miR-503 in the peripheral blood of study group were lower than those of control group(P<0.05),miR-15b and miR-503 in the peripheral blood of cognitive dysfunction group were lower than those of normal cognitive function group(P<0.05),the scores of MoCA and mini-mental state examination in normal cognitive function group were higher than those in cognitive dysfunction group(P<0.05);The results of Pearson analysis showed that the levels of miR-15b and miR-503 in peripheral blood of patients with depression were significantly positively correlated with MoCA scores(r=0.635,0.668,P<0.05);The area under the curve(AUC)of miR-15b level alone in diagnosing cognitive dysfunction in patients with depression was 0.836(95%CI:0.750-0.902),the sensitivity and specificity were 77.14%and 89.71%respectively;The AUC of miR-503 level alone in diagnosing cognitive dysfunction in patients with depression was 0.892(95%CI:0.816-0.945),the sensitivity and specificity were 80.00%and 88.24%respectively;The AUC for the combined diagnosis of miR-15b and miR-503 was significantly greater than the AUC for miR-15b and miR-503 alone.Conclusion The expression of miR-15b and miR-503 is decreased in patients with depression,and they are of high diagnostic value for cognitive dysfunction in patients with depression.