母婴同室产妇健康教育效果分析

为适应现代医学模式与产妇产褥期自我护理及新生儿护理的需求,采取小组教育、书面材料以及一对一相结合的健康教育形式对母婴同室产妇进行了较为全面的、有针对性、并有评价的健康教育。通过对１１７例产妇健康教育前后产褥期及新生儿护理知识与技能两方面的比较,教育前后存在显著性差异（Ｐ值均＜０．００１）,证明住院期间的健康教育明显提高了产妇产褥期卫生保健及新生儿护理知识水平及护理技能,同时该研究也阐明了母婴同室开展健康教育的重要性和必要性。     

miR-31调控PAX9对肺癌细胞增殖和侵袭能力的影响

目的 研究miR-31调控配对盒基因9(PAX9)对肺癌细胞侵袭和增殖能力的影响.方法 运用免疫组织化学检测肺癌组织和癌旁正常组织PAX9蛋白的表达;运用荧光定量PCR检测肺癌组织、癌旁正常组织和肺癌细胞株M14中miR-31的表达.通过转染miR-31-inhibitor下调M14细胞中miR-31的表达,双荧光素酶活性检测miR-31对PAX9转录活性的影响;Transwell侵袭实验检测miR-31对M14细胞的侵袭能力的影响;平板克隆实验检测miR-31对M14细胞的增殖能力的影响.结果 与癌旁正常组织比较,PAX9蛋白在肺癌组织中表达降低,miR-31在肺癌组织中表达明显升高(P<0.05);双荧光素酶活性检测结果显示,miR-31可以直接调控PAX9的转录活性;抑制miR-31的表达后,肺癌细胞株M14的PAX9蛋白表达水平上调,侵袭和转移能力明显降低(P<0.05).结论 miR-31靶向PAX9的表达,从而调控肺癌细胞的侵袭和增殖能力.     

骨肉瘤患者血浆中microRNA-181b水平的检测

目的检测骨肉瘤患者血浆中microRNA-181b (miR-181b)的水平变化,初步探讨其临床意义.方法选择25例骨肉瘤患者和30例健康对照,采用茎-环定量逆转录聚合酶链反应(RT-PCR)方法检测血浆中miR-181b的水平,并分析miR-181b与骨肉瘤临床病理指标之间的关系.结果骨肉瘤患者血浆中miR-181b水平(0.62±0.25)与正常对照组(0.41±0.18)相比明显升高,差异具有统计学意义(P＜0.01);骨肉瘤患者血浆中miR-181b的水平与患者性别、年龄、肿瘤大小、肿瘤部位、病理类型及Enneking分期均无明显相关性(P＞0.05).结论骨肉瘤患者血浆中miR-181b水平增高,miR-181b可能参与了骨肉瘤的发病过程.     

MicroRNA-21与胃癌关系的研究进展

胃癌的发生和发展是一个复杂、多步骤的过程,涉及原癌基因和抑癌基因的遗传失调,最近研究较多的微RNA(miRNA)起着重要作用。miRNA是一种长为21²3个核苷酸的非编码RNA分子,参与细胞增殖、凋亡和分化以及恶性肿瘤的发生,是重要的调节器。近些年来,人们针对miR-21在恶性肿瘤中的表达研究最为广泛深入,该文就miR-21与胃癌的关系进展予以综述。     

人类微小RNA-208a的靶基因预测及生物学过程和信号通路的生物信息学分析

目的 采用生物信息学技术预测人类微小RNA-208a(hsa-miRNA-208a)靶基因及分析其可能参与的生物学过程及信号通路.方法 应用miRbase数据库和UCSC Genome Browser分析工具获取hsa-miRNA-208a的染色体定位、碱基序列和物种保守性等基本信息,利用miRanda、miRDB、TargetScan和miRwalk进行靶基因预测,采用miRwalk网站对靶基因取交集,合并有文献支持和经实验证实的靶基因作为基因集,对基因集进行功能富集分析(GO分析)和信号通路分析.结果 hsa-miRNA-208a序列在各物种间高度保守.对TargetScan、miRDB、miRanda和miRwalk预测的靶基因进行交集后共得到16个靶基因(CPEB2、CSNK2A2、DLD、MTF2、FBXO28、LEP、SMAD4、NLK、GPR88、VPS13D、ZNF215、CHD9、SLC7A5、C19orf44、SLC45A3、MAP4K4),miRwalk、DIANA Lab TarBase检索到已验证的靶基因分别为12个(CASP3、MRGPRX3、FPRL1、MED13、IL10、GATA4、HSH2D、MYH6、MYH7、TNNI3、CDKN1A、PAK3)和3个(SOX6、MTM1、TAB3).GO分析结果显示靶基因富集于心室肌组织发育、心室形态发育、心腔发育、心肌发育、心脏发育以及细胞发育等生物学过程(P＜0.05);信号通路分析结果显示靶基因富集于黏附连接、紧密连接、心肌收缩、Wnt信号通路以及病毒性心肌炎、肥厚型心肌病和扩张型心肌病的相关信号通路中(P＜0.05).结论 hsa-miRNA-208a参与心脏生长发育的生物学过程,与心肌疾病的发生密切相关.     

微小RNA-454、微小RNA-132、液泡膜-ATP酶表达与结肠癌临床病理特征关联性分析

目的 探讨组织微小RNA(miR)-454、miR-132、液泡膜-ATP酶（V-ATPase）表达与结肠癌病人临床病理特征关联性。方法 选取2011年9月至2014年11月新乡医学院第一附属医院行手术切除的96例结肠癌组织标本、96例癌旁正常结肠组织标本、82例良性结肠病变标本为研究对象。以实时荧光定量逆转录聚合酶链反应（qRT-PCR）测定标本中miR-454、miR-132、V-ATPase mRNA表达,分析miR-454、miR-132、V-ATPase mRNA表达与结肠癌病人一般资料、临床病理参数的关系,随访5年,统计miR-454、miR-132、V-ATPase高表达、低表达病人3年、5年生存率。结果 结肠癌组织标本中miR-454表达69.86±7.29与V-ATPase mRNA表达5.42±0.41高于良性结肠病变组织10.74±2.03、2.79±0.38、癌旁正常结肠组织标本1.28±0.74、1.96±0.32,miR-132水平表达1.46±0.25低于良性结肠病变组织3.68±0.73、癌旁正常结肠组织标本4.59±1.24(P<0.05);中低...     

Hsa_circ_0007142 contributes to cisplatin resistance in esophageal squamous cell carcinoma via miR‐494‐3p/LASP1 axis

BackgroundChemoresistance is one of the major obstacles for tumor treatment. Circular RNAs (circRNAs) have been confirmed to play vital roles in chemoresistance of cancer, including esophageal squamous cell carcinoma (ESCC). We investigated the roles and mechanisms of circ_0007142 in cisplatin (DDP) resistance of ESCC.MethodsQuantitative real‐time polymerase chain reaction (qRT‐PCR) was conducted to determine the levels of circ_0007142, DOCK1 mRNA, microRNA‐494‐3p (miR‐494‐3p) and LIM And SH3 Protein 1 (LASP1) mRNA. RNase R assay was conducted to analyze the characteristic of circ_0007142. Cell Counting Kit‐8 (CCK‐8) assay was performed to evaluate IC50 of DDP. Flow cytometry analysis, 5‐ethynyl‐2’‐deoxyuridine (EdU) assay and transwell assay were carried out to examine cell apoptosis, proliferation and invasion, respectively. Dual‐luciferase reporter assay was employed to verify the association between miR‐494‐3p and circ_0007142 or LASP1. Murine xenograft assay was conducted to investigate the role of circ_0007142 in DDP resistant in vivo. The protein level of LASP1 in tumors was measured by Immunohistochemistry (IHC) analysis.ResultsCirc_0007142 was upregulated in DDP‐resistant ESCC tissues and cells. Circ_0007142 knockdown improved DDP sensitivity, induced cell apoptosis and hampered cell proliferation and invasion in DDP‐resistant ESCC cells. Circ_0007142 functioned as the sponge for miR‐494‐3p and miR‐494‐3p inhibition reversed the impacts of circ_0007142 knockdown on DDP resistance, cell apoptosis, proliferation, and invasion. LASP1 was a target of miR‐494‐3p, and the effects on DDP resistance, cell apoptosis, growth, and invasion mediated by LASP1 downregulation were rescued by miR‐494‐3p inhibition. Moreover, circ_0007142 knockdown enhanced DDP sensitivity in vivo.ConclusionCirc_0007142 improved DDP resistance of ESCC by upregulating LASP1 via sponging miR‐494‐3p.     

miR-429 expression in bladder cancer and its correlation with tumor behavior and clinical outcome

We previously showed that microRNA-429 (miR-429) played an important role in epithelial–mesenchymal transition (EMT) of urothelial cell carcinoma of the bladder. We herein evaluated the expression of miR-429 in bladder cancer and its potential relevance to clinicopathological characteristics and patient survival. Relative expression levels of miR-429 in surgical bladder cancer tissue specimens obtained from 76 patients with bladder cancer were measured by chromogenic in situ hybridization. miR-429 expression was significantly higher in specimens from alive patients than expired patients in both of 5-year overall survival (OS) (0.59 ± 0.09 vs. 0.27 ± 0.12; p < 0.05) and 5-year recurrence-free survival (RFS) (0.63 ± 0.10 vs. 0.33 ± 0.10; p < 0.05). The univariate Cox proportional hazards analysis revealed that tumor grade, stage, and miR-429 expression were significantly associated with patient survival. In multivariate analysis, tumor stage and miR-429 expression were significantly associated with 5-year OS (hazard ratio [HR] 4.70, p < 0.001) and 5-year-RFS (HR 2.20, p < 0.05). The Kaplan–Meier analysis showed that patients with miR-429 expression had significantly better 5-year OS and 5-year RFS rates than those without miR-429 expression (84.4% vs. 61.4%, p < 0.05 and 71.9% vs. 45.5%, p < 0.05, respectively). miR-429 may be considered as an adjunctive prognostic marker in addition to tumor grade and stage in bladder cancer.     

MicroRNA-323 regulates ischemia/reperfusion injury-induced neuronal cell death by targeting BRI3

Purpose: MicroRNA-323 (miR-323) has been reported to be upregulated in Ischemia/Reperfusion (I/R) injury-treated neuronal cell. However, the effect and underlying mechanism of miR-323 in I/R-induced neuronal cell death remains poorly understood. The current study was aim to investigate the role and molecular basis of miR-323 in I/R-induced neuronal cell. Methods: An oxygen-glucose deprivation (OGD) model of hippocampal neuron I/R was produced in vitro. Cell apoptosis, cell survival, and the expression of miR-323 were determined after 6 h, 12 h and 24 h after OGD treatment. The up- or down-regulation of miR-323 was performed by miR-323 mimics or anti-miR-323, respectively. Results: OGD induced apoptosis and suppressed survival in rat hippocampal neurons. And the expression levels of miR-323 were increased after OGD treatment. Furthermore, the up-regulation of miR-323 promoted apoptosis and suppressed survival, whereas the inhibition of miR-323 suppressed apoptosis and enhanced survival in OGD-treated neurons. Moreover, miR-323 could directly bind to BRI3 3’-UTR. Notably, the knockdown of BRI3 by BRI3 siRNA apparently abrogated cell survival and induced cell apoptosis in rat neurons. Conclusion: This study indicated that miR-323 might regulate ischemia/reperfusion-induced rat neuronal cell death via targeting BRI3.     

MicroRNA4293基因多态性与女性肝癌易感性相关

目的研究microRNA-4293的SNP(rs12220909)与原发性肝癌易感性的关系。方法收集人体血液样本1788份,样本取自健康对照者884名,原发性肝癌患者904例。抽提血液样本中基因组DNA,应用MassARRAY法对microRNA-4293的SNP(rs12220909)位点进行基因分型;应用二元逻辑回归法分析microRNA-4293的SNP(rs12220909)位点与肝癌易感性之间的关系。结果女性肝癌患者microRNA-4293的SNP(rs12220909)中CC基因型较健康对照组显著增加(P=0.04),在HBV相关肝癌中显著性进一步增加(P=0.02),提示CC基因可能增加女性肝癌尤其是HBV相关肝癌的易感性。而在男性患者中,microRNA-4293的SNP(rs12220909)与肝癌易感性并不相关(P=0.33)。结论microRNA-4293的SNP(rs12220909)与女性肝癌易感性相关。