血清miR-34b-5p、miR-155表达与早产儿急性呼吸窘迫综合征炎症因子和预后的关系分析

摘要 目的：探讨血清微小核糖核酸（miR）-34b-5p、miR-155表达与早产儿急性呼吸窘迫综合征（ARDS）炎症因子和预后的关系。方法：选择2019年2月至2021年3月我院收治的92例ARDS早产儿,根据ARDS病情严重程度将其分为轻度组（31例）、中度组（43例）和重度组（18例）,追踪患儿临床结局,根据院内死亡情况将其分为存活组（51例）和死亡组（41例）。检测所有患儿的血清miR-34b-5p、miR-155表达水平以及白细胞介素-1β（IL-1β）、肿瘤坏死因子-α（TNF-α）、白细胞介素-6（IL-6）水平,比较各组间上述指标差异,分析ARDS早产儿血清miR-34b-5p、miR-155表达与炎症因子的相关性以及miR-34b-5p、miR-155预测ARDS早产儿预后的价值。结果：重度组miR-155表达水平及IL-1β、TNF-α、IL-6水平均高于中度组和轻度组,且中度组高于轻度组（P＜0.05）,重度组miR-34b-5p表达水平低于中度组和轻度组,且中度组低于轻度组（P＜0.05）。死亡组miR-155表达水平及IL-1β、TNF-α、IL-6水平高于存活组（P＜0.05）,死亡组miR-34b-5p表达水平低于存活组（P＜0.05）。ARDS早产儿miR-155表达水平与IL-1β、TNF-α、IL-6水平均呈正相关,而miR-34b-5p表达水平与IL-1β、TNF-α、IL-6水平均呈负相关（P＜0.05）。联合miR-34b-5p、miR-155预测ARDS早产儿死亡的曲线下面积（AUC）为0.853,高于两指标单独预测的0.688、0.649。结论：ARDS早产儿血清miR-34b-5p、miR-155表达水平与患儿血清炎症因子水平以及预后有关,可作为ARDS早产儿病情评估以及预后预测的潜在指标。     

慢性牙周炎患者血清miR-205-5p、miR-28-5p的表达与诊断价值研究

摘要 目的：探讨慢性牙周炎（CP）患者血清微小核糖核酸（miRNA）-205-5p、miR-28-5p表达与牙周指标、炎症反应的关系及诊断价值。方法：选取2021年1月～2022年12月我院口腔科收治的102例CP患者为CP组,根据病情严重程度分为轻度组31例、中度组37例、重度组34例,另选取同期我院65名体检健康者为对照组。采用实时荧光定量聚合酶链式反应（PCR）检测血清miR-205-5p、miR-28-5p表达,酶联免疫吸附法检测白细胞介素（IL）-1β、IL-6、肿瘤坏死因子-α（TNF-α）水平,检查各组牙周指标[菌斑指数（PLI）、牙龈出血指数（BI）、附着丧失（AL）、探诊深度（PD）]。CP患者血清miR-205-5p、miR-28-5p表达与牙周指标和炎症指标的相关性采用Pearson相关性分析。受试者工作特征（ROC）曲线分析血清miR-205-5p、miR-28-5p表达诊断CP的价值。结果：与对照组比较,CP组血清miR-205-5p、miR-28-5p表达降低,PLI、BI、AL、PD和IL-1β、IL-6、TNF-α水平升高（P＜0.05）。轻度组、中度组、重度组血清miR-205-5p、miR-28-5p表达依次降低,PLI、BI、AL、PD和IL-1β、IL-6、TNF-α水平依次升高（P＜0.05）。Pearson相关性分析显示,CP患者血清miR-205-5p、miR-28-5p表达与PLI、BI、AL、PD、IL-1β、IL-6、TNF-α呈负相关（P＜0.05）。ROC曲线分析显示,血清miR-205-5p联合miR-28-5p诊断CP的曲线下面积分别为0.885大于miR-205-5p、miR-28-5p单独检测的0.792、0.790。结论：CP患者血清miR-205-5p、miR-28-5p低表达,与牙周指标、炎症反应密切相关,血清miR-205-5p、miR-28-5p的表达情况可能成为CP辅助诊断指标,且miR-205-5p联合miR-28-5p诊断CP的价值较高。     

RDW联合血清CRP、PCT、sTLT-1与急性脑梗死患者脑梗死体积、神经功能受损程度和预后的关系研究

摘要 目的：观察红细胞分布宽度（RDW）联合血清C反应蛋白（CRP）、降钙素原（PCT）、可溶性骨髓细胞样转录因子-1（sTLT-1）与急性脑梗死（ACI）患者脑梗死体积、神经功能受损程度和预后的关系。方法：选择我院2019年4月至2021年10月期间收治的100例ACI患者作为研究对象,将100例患者根据入院时美国国立卫生研究院卒中量表（NIHSS）评分分为轻中度损伤组（61例,NIHSS≤15分）和重度损伤组（39例,NIHSS>15分）;根据不同脑梗死体积分为小灶梗死组（41例,梗死体积<5 cm³）、中灶梗死组（35例,5 cm³≤梗死体积≤15 cm³）、大灶梗死组（24例,梗死体积>15 cm³）;根据出院时改良Rankin量表（mRS）分为预后不良组（31例,mRS>3分）和预后良好组（69例,mRS≤3分）。对比不同脑梗死体积、不同NIHSS评分、不同预后ACI患者的RDW和血清CRP、PCT、sTLT-1水平,ACI患者预后不良的影响因素采用单因素及多因素Logistic回归分析。结果：小灶梗死组、中灶梗死组、大灶梗死组患者的RDW和血清CRP、PCT、sTLT-1依次升高,组间对比差异均有统计学意义（P<0.05）。重度损伤组的RDW和血清CRP、PCT、sTLT-1水平高于轻中度损伤组（P<0.05）。预后不良组的RDW和血清CRP、PCT、sTLT-1水平高于预后良好组（P<0.05）。预后良好组、预后不良组在脑梗死分型、吸烟史、性别、入院时NIHSS评分、年龄、梗死体积、饮酒史方面对比差异有统计学意义（P<0.05）。多因素Logistic回归分析结果显示：入院时NIHSS评分偏高、梗死体积偏大、脑梗死分型为完全前循环脑梗死、RDW偏高、CRP偏高、PCT偏高、sTLT-1偏高是ACI患者预后不良的危险因素（P<0.05）。结论：RDW和血清CRP、PCT、sTLT-1水平可有效反映ACI患者脑梗死体积、神经功能受损程度,且ACI患者的预后受到入院时NIHSS评分、梗死体积、脑梗死分型、RDW、CRP、PCT、sTLT-1等多种因素的影响。     

慢性牙周炎合并2型糖尿病患者龈沟液miR-21、miR-34a表达水平与牙周指标和Th1/Th2/Th17失衡的关系研究

摘要 目的：探讨慢性牙周炎（CP）合并2型糖尿病（T2DM）患者龈沟液微小核糖核酸（miR）-21、miR-34a表达水平与牙周指标和辅助性T细胞（Th）1/Th2/Th17失衡的关系。方法：选取2020年3月～2022年3月首都医科大学附属北京世纪坛医院口腔科收治的114例CP患者，根据是否合并T2DM分为CP合并T2DM组36例和单纯CP组78例，另选取60名健康体检者为对照组。对比三组牙周指标、龈沟液miR-21、miR-34a表达和外周血Th1、Th2、Th17、Th1/Th2/Th17、血清Th1、Th2、Th17相关细胞因子水平，采用Spearman相关性分析CP合并T2DM患者龈沟液miR-21、miR-34a表达与牙周指标和外周血Th1、Th2、Th17、Th1/Th2/Th17及其相关细胞因子水平的相关性。采用Pearson/Spearman相关性分析CP合并T2DM患者牙周指标与外周血Th1、Th2、Th17、Th1/Th2/Th17及其相关细胞因子水平的相关性。结果：对照组、单纯CP组、CP合并T2DM组菌斑指数（PLI）、牙龈出血指数（BI）、附着丧失（AL）、探诊深度（PD）依次增加，龈沟液miR-21和外周血Th2及血清白细胞介素（IL）-2、干扰素-γ（INF-γ）依次降低，龈沟液miR-34a和外周血Th1、Th17、Th1/Th2/Th17及血清IL-4、IL-10、IL-17、肿瘤坏死因子-α（TNF-α）依次升高（P＜0.05）。Spearman相关性分析显示，CP合并T2DM患者龈沟液miR-21表达与PLI、BI、AL、PD和外周血Th1、Th17、Th1/Th2/Th17及血清IL-4、IL-10、IL-17、TNF-α呈负相关，与外周血Th2和血清IL-2、INF-γ呈正相关（P＜0.05）；而miR-34a则与之相反。Pearson/Spearman相关性分析显示，CP合并T2DM患者PLI、BI、AL、PD与外周血Th1、Th17、Th1/Th2/Th17和血清IL-4、IL-10、IL-17、TNF-α呈正相关，与外周血Th2和血清IL-2、INF-γ呈负相关（P＜0.05）。结论：CP合并T2DM患者龈沟液miR-21低表达和miR-34a高表达，与牙周状况差有关，可能通过调节Th1/Th2/Th17失衡参与CP合并T2DM进展。     

血清miR-26a、miR-130a与老年急性脑梗死患者PI3K/Akt信号通路和预后的关系研究

摘要 目的：研究血清miR-26a、miR-130a与老年急性脑梗死（ACI）患者磷酸酰肌醇3-激酶/蛋白激酶B（PI3K/Akt）信号通路和预后的关系。方法：选取2020年3月-2022年10月我院收治的98例老年ACI患者作为研究组,同期选取60例于本院体检健康的老年人作为对照组。采用实时荧光定量聚合酶链式反应（qRT-PCR）检测血清miR-26a、miR-130a表达水平,蛋白免疫印迹法检测外周血单个核细胞中PI3K、Akt蛋白表达;采用Pearson相关性分析miR-26a、miR-130a表达水平与PI3K、Akt蛋白表达的相关性。患者治疗后行1个月随访,根据改良Rankin量表（mRS）评分分为预后良好组（n=55例,mRS评分≤2分）和预后不良组（n=43例,评分＞2分）。收集患者的一般资料,采用Logistic回归模型分析老年ACI患者预后的影响因素。结果：研究组血清miR-26a表达水平高于对照组,miR-130a表达水平低于对照组（P＜0.05）。研究组PI3K蛋白表达量低于对照组,Akt蛋白表达量高于对照组（P＜0.05）。Pearson相关性分析显示,miR-26a表达水平与PI3K蛋白表达量呈负相关、与Akt蛋白表达量呈正相关,miR-130a表达水平与PI3K蛋白表达量呈正相关、与Akt蛋白表达量呈负相关（P＜0.05）。预后良好组与预后不良组在年龄、房颤占比、入院时美国国立卫生研究院卒中量表（NIHSS）评分、血糖及血清miR-26a、miR-130a表达水平方面比较具有统计学意义（P＜0.05）。Logistic回归分析显示,年龄偏大、入院时NIHSS评分偏高、血糖偏高及血清miR-26a表达水平升高为老年ACI患者预后不良的危险因素,miR-130a表达水平升高为其保护因素（P＜0.05）。结论：老年ACI患者血清miR-26a表达水平升高、miR-130a表达水平下降,与PI3K/Akt信号通路密切相关,是老年ACI患者预后的影响因素。     

慢性牙周炎患者血清和龈沟液LncRNA MALAT1和miR-769-5p水平表达及其临床意义

摘要 目的：探讨慢性牙周炎患者血清和龈沟液长链非编码核糖核酸肺腺癌转移相关转录子1（LncRNA MALAT1）和微小RNA-769-5p（miR-769-5p）水平表达及其临床意义。方法：选择2020年6月~2023年7月我院收治的慢性牙周炎患者117例纳入观察组,根据慢性牙周炎患者的病情严重程度分为轻度组39例、中度组42例和重度组36例,另选取117例健康志愿者纳入对照组。对比对照组、观察组血清和龈沟液LncRNA MALAT1和miR-769-5p表达水平。对比不同病情严重程度血清和龈沟液LncRNA MALAT1和miR-769-5p表达水平、血清和龈沟液炎症指标[肿瘤坏死因子-α（TNF-α）、白介素-6（IL-6）、干扰素-γ（IFN-γ）]水平、牙周指标[牙周袋深度（PD）、附着丧失（AL）、龈沟出血指数（SBI）、菌斑指数（PLI）]。采用Pearson相关性分析法分析慢性牙周炎患者炎症指标、牙周指标和血清和龈沟液miR-769-5p、LncRNA MALAT1表达水平的相关性。采用受试者工作特征（ROC）曲线分析血清和龈沟液LncRNA MALAT1、miR-769-5p对慢性牙周炎的诊断价值。结果：观察组血清和龈沟液LncRNA MALAT1表达水平高于对照组（P＜0.05）,血清和龈沟液miR-769-5p表达水平低于对照组（P＜0.05）。轻度组的血清和龈沟液LncRNA MALAT1表达水平及IL-6、TNF-α、IFN-γ、PD、AL、SBI、PLI低于中度组（P＜0.05）,中度组低于重度组（P＜0.05）;血清和龈沟液miR-769-5p表达水平轻度组高于中度组（P＜0.05）,中度组高于重度组（P＜0.05）。慢性牙周炎患者血清和龈沟液LncRNA MALAT1表达水平与IL-6、TNF-α、IFN-γ、PD、AL、SBI、PLI呈正相关（P＜0.05）,血清和龈沟液miR-769-5p表达水平与IL-6、TNF-α、IFN-γ、PD、AL、SBI、PLI呈负相关（P＜0.05）,血清和龈沟液LncRNA MALAT1表达水平与miR-769-5p表达水平呈负相关（P＜0.05）。血清LncRNA MALAT1、miR-769-5p及联合检测诊断慢性牙周炎的曲线下面积（AUC）分别为0.800、0.743和0.877;龈沟液LncRNA MALAT1、miR-769-5p及联合检测诊断慢性牙周炎的AUC分别为0.786、0.849和0.891。结论：慢性牙周炎患者血清和龈沟液LncRNA MALAT1表达水平升高,miR-769-5p表达水平降低,可加重炎症反应和牙周炎症状,血清和龈沟液LncRNA MALAT1、miR-769-5p联合检测对慢性牙周炎具有较高的诊断价值。     

研究报告: 急性缺血性卒中患者血清脑红蛋白的动态变化及临床意义

目的 脑红蛋白（neuroglobin,Ngb）又称神经球蛋白,是一种携氧球蛋白。有研究证明Ngb在脑缺血缺氧疾病中具有神经保护作用,对氧具有高亲和力,有助于预防缺氧缺血性脑损伤,并影响急性缺血性卒中（acute ischemic stroke,AIS）的预后。本研究观察了AIS后血清Ngb水平的变化,并评估了Ngb与卒中严重程度及预后的关系。方法 前瞻性地募集AIS患者和健康对照者进行研究。在AIS患者起病后不同时间点（脑梗死发病后72 h内和第14天）及对照组中分别检测血清Ngb水平,并比较AIS患者与对照组之间的血清Ngb水平。对合并与不合并糖尿病的AIS患者的血清Ngb水平进行比较。分析患者血清Ngb水平与梗死体积及国家卫生研究院卒中量表（NIHSS）评分之间的相关性。应用受试者操作特征（ROC）曲线评估Ngb对AIS预后的预测价值。结果 AIS患者的血清Ngb水平在脑梗死后72 h内和第14天时分别为105.7（88.3,123.1）μg/L和72.8（58.7,86.9）μg/L。对照组血清Ngb水平为58.2（35.0,81.6）μg/L。AIS发病后72 h内血清Ngb水平较对照组显著升高（P<0.05）。合并与不合并糖尿病的AIS患者血清Ngb水平在发病后72 h内及第14天均无显著差异（P>0.05）。AIS发病72 h内的血清Ngb水平与NIHSS评分显著相关（Spearman相关系数=0.232,P=0.038）。在各时间点,大体积脑梗死组患者血清Ngb水平与中小体积脑梗死组相比无显著性差异（P>0.05）。ROC曲线分析表明,血清Ngb水平对AIS患者的预后具有良好的预测能力。结论 AIS发病后72 h内血清Ngb水平升高。合并与不合并糖尿病的AIS患者血清Ngb水平无显著差异。发病后72 h内的血清Ngb水平与NIHSS评分显著相关。Ngb可能作为卒中严重程度和预后的预测因子。     

下调miR-223表达对脓毒症心肌病小鼠心肌的保护作用及机制研究

摘要 目的：探讨下调miR-223表达对脓毒症心肌病（SCM）小鼠心肌的保护作用及其机制。方法：按随机数字表法将27只8-10 周龄SPF级雄性C57BL/6小鼠分配至SCM模型（0 h,6 h,12 h,18 h,24 h）时相组、Normal组、SCM组、miR-223 antagomir NC组、miR-223 antagomir组,每组3只。腹腔注射脂多糖（lipopolysaccharide, LPS）15 mg/kg构建SCM小鼠模型。miR-223 antagomir NC组与miR-223 antagomir组分别于建模前连续3天鼠尾静脉注射miR-223 antagomir NC、miR-223 antagomir预处理。采用反转录-聚合酶链反应（RT-PCR）研究SCM模型各个时相组小鼠心肌组织miR-223的表达情况。采用苏木素伊红（HE）染色法观察Normal组、SCM组、miR-223 antagomir NC组和miR-223 antagomir组小鼠心肌病理形态变化。采用酶联免疫吸附实验（ELISA）测定Normal组、SCM组、miR-223 antagomir NC组和miR-223 antagomir组小鼠血清cTnI、BNP、CK-MB、IL-6、IL-1β、TNF-α的含量并进行相关性分析。结果：SCM模型时相组小鼠随刺激时间延长,心肌组织miR-223表达水平逐渐升高。与Normal组比较,SCM组、miR-223 antagomir NC组、miR-223 antagomir组小鼠心肌组织出现不同程度损伤;血清心肌损伤标记物cTnI、BNP、CK-MB及炎性因子IL-6、IL-1β、TNF-α的表达水平均上升,差异具有统计学意义（P<0.05）;与SCM组比较,miR-223 antagomir NC组各项指标相差不大,差异均无统计学意义（P>0.05）;miR-223 antagomir组小鼠心肌组织病理损伤程度有所减轻,心肌损伤标记物cTnI、BNP、CK-MB及炎性因子IL-6、IL-1β、TNF-α水平下降,差异具有统计学意义（P<0.05）。相关性分析结果显示小鼠miR-223表达与心肌损伤标记物cTnI、BNP、CK-MB及炎性因子IL-6、IL-1β、TNF-α的表达呈正相关。结论：下调miR-223表达可通过减轻炎症反应对SCM小鼠心肌产生保护作用。     

血清miR-203、miR-217表达与急性髓系白血病患者预后的关系

摘要 目的：探究血清miR-203、miR-217表达与急性髓系白血病(AML)患者预后的关系。方法：选择2010年4月至2014年4月我院诊治的101例AML患者作为AML组,AML组根据治疗效果进一步分为完全缓解组和复发组,选择同期在我院体检的101例健康者作为健康组。采用荧光定量PCR检测各组的血清miR-203、miR-217表达水平,分析血清miR-203、miR-217表达水平与患者临床病理特征的关系,采用Kaplan-Meier法分析不同血清miR-203、miR-217表达水平AML患者的预后。结果：与健康组相比,AML组的血清miR-203、miR-217表达水平明显更低（P<0.05）。与完全缓解组相比,复发组的血清miR-203、miR-217表达水平明显更低（P<0.05）。血清miR-203表达水平与AML患者白细胞计数相关（P<0.05）,而血清miR-217表达水平与AML患者血小板计数相关（P<0.05）。血清miR-203相对高表达和miR-217相对高表达的AML患者5年生存率分别高于血清miR-203相对低表达和miR-217相对低表达患者（Log Rank ^miR-203 =17.870,Log Rank ^miR-217 =28.926,均P=0.000）。结论：血清miR-203、miR-217的表达水平与AML密切相关,检测血清miR-203、miR-217表达水平可能有助于评估AML患者的预后。     

慢性心力衰竭患者外周血miR-148a表达水平与炎症因子、心功能和心室重构的关系

摘要 目的：探讨慢性心力衰竭（CHF）患者血清miR-148a表达水平与炎症因子、心功能和心室重构的关系。方法：选择2017年1月~2019年1月在我院就诊的CHF患者136例,按照美国纽约心脏病学会（NYHA）心功能分级将患者分为Ⅱ级57例、Ⅲ级43例和Ⅳ级36例。实时荧光定量PCR检测血清miR-148a的表达,血清中白细胞介素-1（IL-1）、白细胞介素6（IL-6）和肿瘤坏死因子-α（TNF-α）的含量用酶联免疫吸附试验检测,使用超声心动图检测心功能和心室重构指标,主要包括左室舒张末期内径（LVEDD）、舒张末室间隔厚度（IVSD）、舒张末左室后壁厚度（PWD）、左室质量指数（LVMI）、左室射血分数（LVEF）和左室重构指数（LVRI）,采用Pearson积矩相关系数分析血清miR-148a表达水平与血清炎症因子、超声心动图指标之间的相关性。结果：CHF患者血清miR-148a表达量随心功能分级升高而降低（P均<0.05）。炎症因子（IL-1、IL-6和TNF-α）水平和LVEDD、PWD、IVSD、LVMI随心功能分级升高而升高, LVRI和LVEF随心功能分级升高而降低（P<0.05）。血清miR-148a表达量与炎症因子、IVSD、PWD和LVMI呈负相关（P<0.05）;与LVEF和LVRI呈正相关（P<0.05）。结论：血清miR-148a表达量与CHF患者血清炎症因子水平、心功能及心室重构关系密切,提示检测血清miR-148a有助于反映CHF患者病情的严重程度。     

The clinical significance of circulating miR-21, miR-142, miR-143, and miR-146a in patients with prostate cancer

BackgroundProstate cancer (PCa) is the most common type of solid tissue cancer among men in western countries. In this study, we determined the levels of circulating miR-21, miR-142, miR-143, miR-146a, and RNU 44 levels as controls for early diagnosis of PCa.MethodsThe circulating miRNA levels in peripheral blood samples from 43 localized PCa patients, 12 metastatic PCa (MET) patients, and a control group of, 42 benign prostate hyperplasia (BPH) patients with a total of 97 volunteers were determined the by PCR method.ResultsNo differences in the DCT values were found among the groups. In PCa and PCaMet groups the expression of miR21 and miR142 were higher compared to the BHP group. No other differences were observed among the other groups. miR21 expression in the PCa group was 6.29 folds upregulated whereas in the PCaMet group 10.84 folds up-regulated. When the total expression of miR142 is evaluated, it showed a positive correlation with mir21 and mir 146 (both p<0.001). Also, the expression of miR146 shows a positive correlation with both miR21 and miR143 (both p<0.001). Expression of miRNAs was found to be an independent diagnostic factor in patients with Gleason score, PSA, and free PSA levels.ConclusionsOur study showed that co-expression of miR21, miR-142, miR-143, and miR-146a and the upregulation of miR-21 resulted in increased prostate carcinoma cell growth. In the PCaMet group, miR21 is the most upregulated of all miRNAs. These markers may provide a novel diagnostic tool to help diagnose PCa with aggressive behavior.     

MARVELD1调控内含子miR-186、miR-335表达的研究

目的:前期研究发现,MARVELD1(具有囊泡运输和膜连接功能的MAL及相关蛋白1)在多种肿瘤细胞中表达下调,许多micro RNAs也随其发生变化。本研究探讨了MARVELD1调控mi R-186和mi R-335的表达方式。方法:本研究选取了多种肺癌细胞系,运用q RT-PCR的方法检测了MARVELD1以及mi R-186和mi R-335的表达情况,通过MARVELD1过表达体系和si RNA干扰MARVELD1表达的体系分析mi R-186和mi R-335表达变化情况,运用生物信息学网站对mi R-186和mi R-335进行分析,确认其是否为内含子mi RNA,并进一步应用MARVELD1过表达和RNAi体系检测MARVELD1对mi R-186和mi R-335的宿主基因的影响。结果:在肺癌细胞中,MARVELD1与mi R-186、mi R-335的表达呈现明显的正相关。在过表达MARVELD1之后,mi R-186、mi R-335出现高表达;当下调MARVELD1表达时,mi R-186、mi R-335则表现低表达。生物信息学分析发现mi R-186和mi R-335均为内含子mi RNA。进一步分析MARVELD1与mi R-186和mi R-335宿主基因的表达关系显示,MARVELD1可以上调它们的宿主基因的表达。结论:上述结果表明,MARVELD1可通过影响内含子mi R-186和mi R-335的宿主基因进而调控二者的表达,为进一步研究MARVELD1影响肿瘤细胞的发生机制奠定了基础。     

Circulating miR-3613-5p but not miR-125b-5p,miR-199a-3p,and miR-451a are biomarkers of endometriosis

ObjectiveThis study aimed to assess the utility of circulating miR-125b-5p, miR-199a-3p, miR-451a, and miR-3613-5p as biomarkers of endometriosis.Study designPatients with stage III or IV of endometriosis according to the revised American Society of Reproductive Medicine (rASRM) staging classification, as well as control women, were recruited. We created a prospective study conducted on a group of 48 patients (n = 25 controls, n = 24 endometriosis) who had laparoscopic surgery. Blood samples were taken and plasma miRNA levels were measured by quantitative real-time polymerase chain reaction (RT-qPCR) and assessed with AUC and ROC curves.ResultsMiR-451a and miR-3613-5p were significantly decreased in the plasma of endometriosis patients. miR-451a had a receiver-operating characteristic (ROC) area under the curve 0.8283 and miR-3613-5p had a ROC area under the curve 0.7617. The concentration of circulating miR-125b-5p and miR-199-3p did not differ between endometriosis patients and controls. Plasma miRNA levels did not change with BMI, smoking status, fertility problems, or menstrual pain according to the VAS scale (p > 0.05).ConclusionCirculating miR-451a and miR-3613-5p levels significantly differed between endometriosis and controls. However, the levels of miR-451a were discordant with previous studies. Therefore, miR-3613-5p may have better potential as the endometriosis biomarker. Circulating miR-125b-5p and miR-199a-3p cannot be used as reliable markers of endometriosis.     

脑胶质瘤组织miR-211、miR-374、miR-510表达水平与临床病理特征及预后的关系研究

摘要 目的：探讨脑胶质瘤组织微小RNA（miR）-211、miR-374、miR-510表达水平与临床病理特征及预后的关系。方法：选择2013年8月至2015年8月我院诊治的83例脑胶质瘤患者作为研究对象,选择同期由于脑外伤在我院行内减压术切除的正常脑组织样本31份作为对照样本。采用荧光定量PCR检测miR-211、miR-374、miR-510表达水平,生存分析采用Kaplan-Meier法,应用Cox比例风险回归模型分析预后的影响因素。结果：与正常脑组织相比,脑胶质瘤组织中miR-211、miR-374表达水平明显下降,miR-510表达水平明显升高（P<0.05）。脑胶质瘤组织miR-211、miR-374、miR-510表达均与WHO分级和卡氏功能状态量表(KPS)评分有关（P<0.05）。miR-211、miR-374低表达患者的5年总生存率明显低于高表达患者,miR-510低表达患者的5年总生存率明显高于高表达患者（P<0.05）。WHO分级、KPS评分、miR-211、miR-374和miR-510表达是脑胶质瘤患者预后的影响因素（P<0.05）。结论：脑胶质瘤组织中miR-211和miR-374表达下调,而miR-510表达上调,miR-211、miR-374和miR-510表达均与WHO分级、KPS评分和预后相关,检测miR-211、miR-374和miR-51在脑胶质瘤患者的诊断和治疗中具有一定临床意义。     

Dysregulation of exosomal miR-192 and miR-194 expression in lung adenocarcinoma patients

Non-small cell lung cancer (NSCLC) is the main reason of cancer linked mortality and around 80% of cases diagnosed in advanced stage. Therefore current study designed to evaluate the deregulation of miRNA-194 and miRNA-192 in different body fluid of Non small cell lung cancer participants. Present study recruited newly diagnosed histopathologically confirmed. It was observed that the 40% NSCLC participants showed elevated miR-194 expression and 60% NSCLC participants showed reduced miR-194 expression in serum sample while in Bronchial wash, only 20% NSCLC participants showed elevated miR-194 expression while 80% showed reduced miR-194 expression (p = 0.003). It was found that the 54% NSCLC participants showed elevated miR-192 expression and 55% NSCLC participants showed reduced miR-192 expression in serum sample while In Bronchial wash sample, only 25% NSCLC participants showed high miR-192 expression while 75% showed low miR-192 expression (P = 0.0004). Expression of miR-194 was significantly associated with TNM stages (p < 0.0001, p < 0.0001), distant organ metastases (p < 0.0001, p < 0.0001), pathological grade (p = 0.0009, p = 0.0005) among serum sample and bronchial wash sample. Same observation was found with expression of miR-192 and it was significantly associated with TNM stages (p < 0.0001, p < 0.0001), distant organ metastases (p < 0.0001, p < 0.0001), pathological grade (p = 0.006, p = 0.001) among serum sample and bronchial wash sample. It was observed that the NSCLC participants who had high serum based miR-194 expression showed 22 months of overall median survival while low expression of serum based miR-194 expression showed 18 months of overall median survival. Present study suggests that decreased expression of miR-194 and miR-192 was significantly associated with different clinical features of NSCLC cases. However, significantly higher number of NSCLC cases showed low expression of miR-194 and miR-192 in bronchial lavage sample. Decreased poor overall survival was found to be associated with bronchial wash sample with respect to low miR-194 and miR-192 expression while NSCLC participants showed better overall survival with high miR-194 and miR-192 expression. This suggested decreased expression of miR-192 and miR-194 expression could be the potential prognostic marker among NSCLC participants.     

miR-30a和miR-30b靶向GW182的生物学功能研究

目的：通过证明miR-30a、miR-30b靶向GW182,探索HeLa细胞中miR-30a、miR-30b及GW182的生物学功能。方法：生物信息学预测分析表明GW182的3＇UTR区存在4个保守的miR-30a、miR-30b靶位点,将含有靶位点的序列片段构建到萤光素酶报告载体中,检测miR-30a、miR-30b与靶位点的结合情况;用阳离子脂质体转染GW182 siRNA和miR-30a、miR-30b mimics,检测GW182下游功能的变化。结果：miR-30a、miR-30b能够靶向GW182;qPCR及Western印迹证明miR-30a、miR-30b可以在mRNA与蛋白水平上降低GW182的表达,同时影响GW182所参与的miRNA/siRNA对靶基因的抑制作用。结论：GW182是miR-30a、miR-30b的靶基因,揭示了miR-30a、miR-30b通过靶向GW182影响miRNA/siRNA作用途径的新功能。     

LINC00467 promotes cell proliferation and stemness in lung adenocarcinoma by sponging miR-4779 and miR-7978

Lung adenocarcinoma (LAD), as one of the most common types of lung tumors, is lethal and malignant. Long noncoding RNAs (lncRNAs) play important roles in various cancers according to many previous studies. LINC00467 was proposed to be a tumor promoter. Despite the validated promotive effect of LINC00467 on neuroblastoma progression, its regulatory mechanism in LAD remains unclear. In this study, LINC00467 expressed higher in LAD tissues and cell lines, and increased LINC00467 indicated a poor prognosis. Knockdown of LINC00467 inhibited cell proliferation, the expressions of tumor stem cell-related genes, and cell spheroid formation ability, while it promoted cell apoptosis. miR-4779 and miR-7978 were reported to play antitumor roles in several cancers before. LINC00467 could combine with miR-4779 and miR-7978, and negatively regulated miR-4779 and miR-7978. miR-4779 and miR-7978 inhibitor could partly rescue the LINC00467 knockdown-induced influence on cell proliferation, apoptosis, and stemness. In a word, this study innovatively investigated the mechanism of LINC00467 in LAD and verified LINC00467 exerted its carcinogenesis function by sponging miR-4779 and miR-7978, which may become a catalyst for generating new therapeutic targets for LAD treatment.     

骨髓基质干细胞诱导分化为神经元过程中miR-124和miR-128的表达

目的探讨骨髓基质干细胞诱导分化为神经元过程中miR-124和miR-128的表达变化及作用。方法采用全骨髓培养法体外分离培养获得骨髓基质干细胞,取传代培养至第3代的骨髓基质干细胞,在神经干细胞培养液及细胞因子等条件下诱导其分化为神经元,倒置显微镜下观察其形态变化,应用ABI公司的TaqManMicroRNAAssaysreal-timePCR技术,检测miR-124和miR-128在诱导分化过程中的表达。结果 miR-124分化后神经元的表达是未分化BMSCs的0.051倍(P0.05);miR-128分化后神经元的表达是未分化BMSCs的0.070倍(P0.05)。结论 miR-124和miR-128在骨髓基质干细胞诱导分化为神经元过程中可能起重要作用。     

Identification of serum miR-378 and miR-575 as diagnostic indicators and predicting surgical prognosis in human epilepsy

BackgroundEpilepsy (EP) is a common neurological disorder which is characterized by excessive abnormal synchronization of neuronal discharges in the brain due to chronic recurrent seizures of multiple etiologies. Variety of microRNAs have been associated with the occurrence and development of EP. This study aimed to determine the aberrant expression of miR-378 and miR-575 in EP patients to validate their potential to distinguish EP from healthy patients.MethodsRT-qPCR was used to determine the expressions of miR-378 and miR-575 from serum specimens of 106 EP and 103 control individuals. Clinical indicators between EP patients and controls were assessed. Based on surgical outcome, EP patients were further divided into Engel I-IV EP. The potentials of miR-378 and miR-575 in discriminating EP from healthy participants and predicting surgical prognosis were calculated by receiver operating characteristic (ROC) analysis.ResultsWe found the miR-378 and miR-575 were significantly declined (P<0.001) in Engel I-II and III-IV EP patients with no difference in clinical parameters compared. Moreover, miR-378 and miR-575 displayed high sensitivity, specificity, and accuracy in distinguishing EP patients and predicting surgical outcomes. Moreover, after surgical treatment, miR-378 and miR-575 levels were increased compared with those at admission, suggesting their potentials in treatment response.ConclusionsmiR-378 and miR-575 could be utilized as novel and non-invasive serum biomarkers in discriminating EP from healthy controls and predicting surgical outcome, shedding new insights on epileptogenesis and EP treatment.     

miR-15a 和miR-16-1 模拟物对人骨肉瘤细胞系SOSP-9607 凋亡 和增殖的影响

目的:探讨miR-15a和miR-16-1模拟物对于人骨肉瘤细胞系SOSP-9607凋亡和增殖的影响。方法:将SOSP-9607细胞分为实验组和对照组。实验组分为miR-15a组、miR-16-1组、miR-15a+miR-16-1组。以miR-15a组为例,采用miR-15a模拟物(hsa-miR-15a mimics)上调SOSP-9607细胞内的miR-15a表达量。对照组分为阴性对照组和空白对照组。采用流式细胞仪测定细胞凋亡率,四甲基偶氮唑蓝(MTT)法测定细胞增殖,并计算细胞增殖效率。结果:通过统计学分析,实验组凋亡率与阴性对照组凋亡率相比明显增高(P<0.05);实验组的细胞增殖率明显低于对照组(P<0.05)。结论:上调SOSP-9607细胞内miR-15a和miR-16-1的表达量可促进SOSP-9607细胞的凋亡并抑制其增殖。