Bioinformatics Analyses of Potential miRNA-mRNA Regulatory Axis in HBV-related Hepatocellular Carcinoma

Aims: We aimed to explore the crucial miRNA-mRNA axis through bioinformatics analysis and provide evidences for the development of pathophysiological mechanisms and new therapies for HBV-related HCC.Methods: MiRNA ({"type":"entrez-geo","attrs":{"text":"GSE76903","term_id":"76903"}}GSE76903) and mRNA ({"type":"entrez-geo","attrs":{"text":"GSE77509","term_id":"77509"}}GSE77509) dataset were used to screen differentially expressed miRNAs (DE-miRNAs) and differentially expressed mRNAs (DE-mRNAs) using R software. Overlapping genes between DE-mRNAs and target genes of DE-miRNAs were identified as candidate genes. Hub genes were obtained via cytohubba analysis. The expression at protein and mRNA levels and prognostic value of hub genes were evaluated based on The Cancer Genome Atlas (TCGA) data. Key miRNA-mRNA axes were constructed according to predicted miRNA-mRNA pairs. MiRNA expression and prognostic role were respectively identified using starBase v3.0 and Kaplan-Meier plotter database. Real-time PCR was performed to verify the expression of crucial miRNAs and mRNAs. Coexpression of crucial miRNA and mRNA were analyzed using starBase v3.0.Results: CDK1, CCNB1, CKS2 and CCNE1 were screened as hub genes, which were significantly upregulated at protein and mRNA levels. These up-regulated hub genes were also significantly associated with poor prognosis. Hsa-mir-195-5p/CDK1, hsa-mir-5589-3p/CCNB1 and hsa-let-7c-3p/CKS2 were screened as critical miRNA-mRNA axes. Critical miRNAs were decreased in HCC, which indicates unfavourable prognosis. QPCR results showed that crucial miRNAs were decreased, whereas critical mRNAs were increased in HBV-related HCC. A reverse relationship between miRNA and mRNA in crucial axis was further verified.Conclusion: This study identified several miRNA-mRNA axes in HBV-related HCC. Hsa-mir-195-5p/CDK1, hsa-mir-5589-3p/CCNB1 and hsa-let-7c-3p/CKS2 might serve as potential prognostic biomarkers and therapeutic targets for HBV-related HCC.     

调脂治疗是收益还是风险？

诸多的研究结果证明了他汀类药物调脂治疗对降低心血管事件具有一定的有效性和安全性。然而,也有研究结果显示了强化调脂治疗的风险性。为尽可能发挥调脂治疗的功效又避免或减少用药的风险,可遵循生活方式干预、常规剂量给药、全面调脂治疗、个体化治疗和综合治疗等原则。     

NAc Shell Arc/Arg3.1 Protein Mediates Reconsolidation of Morphine CPP by Increased GluR1 Cell Surface Expression: Activation of ERK-Coupled CREB is Required

Background:

Relapse into drug abuse evoked by reexposure to the drug-associated context has been a primary problem in the treatment of drug addiction. Disrupting the reconsolidation of drug-related context memory would therefore limit the relapse susceptibility.

Methods:

Morphine conditioned place preference (CPP) was used to assess activity-regulated cytoskeleton-associated protein (Arc/Arg3.1) and correlative molecule expression in the Nucleus accumbens (NAc) shell during the reconsolidation of morphine CPP. U0126 and Arc/Arg3.1 antisense oligodeoxynucleotide were adapted to evaluate the role and the underlying mechanism of Arc/Arg3.1 during the reconsolidation.

Results:

The retrieval of morphine CPP in rats specifically increased the Arc/Arg3.1 protein level in the NAc shell, accompanied simultaneously by increases in the phosphorylation of extracellular signal-regulated kinase1/2 (pERK1/2), the phosphorylation of Cyclic Adenosine monophosphate (cAMP) response element-binding (pCREB), and the up-regulation of the membrane α-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptors GluR1 subunit level. Intra-NAc shell infusion U0126, an inhibitor of the Mitogen-activated protein kinase kinase (MEK), prevented the retrieval-induced up-regulation of pERK1/2, pCREB, Arc/Arg3.1, and membrane GluR1 immediately after retrieval of morphine CPP. The effect of disrupting the reconsolidation of morphine CPP by U0126 could last for at least 14 days, and could not be evoked by a priming injection of morphine. Furthermore, the specific knockdown of Arc/Arg3.1 in the NAc shell decreased the membrane GluR1 level, and impaired both the reconsolidation and the reinstatement of morphine CPP.

Conclusions:

Arc/Arg3.1 in the NAc shell mediates the reconsolidation of morphine-associated context memory via up-regulating the level of membrane of GluR1, for which the local activation of the ERK-CREB signal pathway, as an upstream mechanism of Arc/Arg3.1, is required.     

Correction to: Effect of JAK inhibitors on high- and low-density lipoprotein in patients with rheumatoid arthritis: a systematic review and network meta-analysis

Clinical Rheumatology -     

L-精氨酸对糖尿病大鼠肾脏、大脑、睾丸氧自由基和抗氧化水平的影响

目的探讨L-精氨酸对糖尿病(DM)大鼠肾脏、大脑、睾丸氧自由基和抗氧化水平的影响.方法给大鼠腹腔注射四氧嘧啶制备DM模型,随机分为DM组、L-精氨酸治疗组及正常对照组;用药4 w末处死大鼠,测定肾脏、大脑及睾丸组织一氧化氮合酶(NOS)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性及一氧化氮(NO)、丙二醛(MDA)含量.结果 DM大鼠睾丸NOS活性(P＜0.01)及大脑、睾丸NO含量(P＜0.05,P＜0.001)、肾脏SOD(P＜0.001)、肾脏、大脑、睾丸GSH-Px活性(P＜0.01,P＜0.001,P＜0.05)均较正常对照组显著降低,而肾脏、大脑、睾丸MDA含量均较正常对照组明显升高(均P＜0.001);L-Arg可显著增加DM大鼠肾脏、大脑、睾丸NOS活性和NO含量(均P＜0.001)及大脑SOD(P＜0.01)、大脑、睾丸GSH-Px活性(P＜0.05,P＜0.001),并使肾脏、大脑、睾丸MDA含量显著降低(分别P＜0.01,P＜0.001,P＜0.001).结论 DM大鼠肾脏、大脑、睾丸组织存在脂质过氧化损伤;L-Arg通过提高NO含量,保护抗氧化酶活性,对DM大鼠肾脏、大脑、睾丸组织的氧化应激有一定的减轻作用.     

雌激素受体α基因多态性与冠心病病变程度的关系

目的探讨中国南方汉族人群中雌激素受体α基因PvuⅡ酶切多态性与冠心病病变程度的关系。方法应用聚合酶链反应限制片长多态性检测236例冠心病患者和117例对照者雌激素受体α基因型,并比较其与冠心病及其冠状动脉病变支数和冠状动脉积分的关系。结果雌激素受体αPvuⅡ多态性中的PP、Pp、pp三种基因型在冠心病组和对照组中的频率分别为19.9%、44.5%和35.6%及9.4%、48.7%和41.9%,冠心病组PP基因型频率显著高于对照组(P<0.05);冠心病患者冠状动脉单支、双支、多支病变组之间雌激素受体αPvuⅡ基因型与等位基因频率差异无统计学意义;冠心病患者PP基因型冠状动脉病变程度积分显著高于Pp和pp基因型(P<0.05)。结论雌激素受体αPvuⅡ多态性与中国南方汉族人群冠心病的发生及冠状动脉病变程度存在相关性。     

高血压病患者血浆凝血噁烷B_2、6-酮-PGF_(1α)的变化

本文观察了60例不同临床分期的高血压病患者血浆凝血(口恶)B_2(TXB_2,血栓素B_2)、6-酮-PGF (1α)的变化,结果表明,高血压病各期TXB_2均明显升高,Ⅰ期高血压组6-酮-PGF_(1α)亦明显升高,TXB_2/6-酮-PGF_(1α)比值仅轻度增加;Ⅱ、Ⅲ期高血压组6-酮-PGF_(1α)则明显降低,TXB_2/6-酮-PGF_(1α)比值显著增加。组间比较:Ⅱ、Ⅲ期高血压组较Ⅰ期高血压组6-酮-PGF_(1α)显著降低,TXB_2/6-酮-PGF_(1α)比值明显增加。说明从高血压病初期到Ⅲ期,均有TXA_2、PGI_2的异常改变,这些变化可能与高血压的持续发展有关。     

低碳环保理念下的绿色化学实验教学

化学类实验是药学专业学生知识体系中的重要组成部分。总结低碳环保理念下所进行的一系列绿色化学实验改革,以重用、拒用、回收、再生、减量的5R原则为指导,设计了跨学科的链式实验,更新实验内容,改进试剂和仪器,对废弃物进行充分的回收再利用,实现节能减排、低碳环保,强化学生的环保思想,提升学生的科研思维水平和操作能力。     

上海市郊区初中女生青春期保健知识现状调查

目的 了解社区青春期少女的生理心理状况,为建立规范、有效、人性化、科学化的社区青春期保健服务模式提供依据.方法 对上海市青浦区华新镇两所中学的444名女学生进行问卷调查,以获取其对青春期保健知识的认知程度以及对青春期保健的服务需求.结果 女生现有青春期保健知识的获取途径排在前3位的是母亲、课堂教科书、同学朋友.女生青春期保健知识的知晓率在60分以上者占2.70%,60分以下者占97.30%.外来务工家庭学生与本地学生在认知程度上比较无显著性差异(χ2=0.101,P=0.751);认知程度与父母文化程度之间比较无显著性差异(χ2=1.712,P=0.425).有关青春期女生生理保健知识:4道选择题的认知程度与年级高低之间比较存在显著性差异(χ2=24.583,P=0.000;χ2=29.612,P=0.000;χ2=22.603,P=0.000;χ2=12.419,P=0.002);6道选择题的认知程度与年级高低之间比较无显著性差异(均P>0.05).有88.26%的女生认为自己的心理健康受父母关系好坏的影响;在出现心理问题时,愿意找心理医生咨询者占2.22%.结论 家庭及学校在青春期保健方面的教育及指导存在不足;社区卫生服务中心应结合学校的教育平台,积极开展青春期生理心理健康教育,提出科学有效的社区干预方法并积极予以实施.     

男女大学生卡特尔16种人格因素量表测查结果比较的meta分析

目的:了解男女大学生的16种人格因素是否存在差异及其相关因素。方法:采用meta分析对2000-2009年间的21篇研究(使用工具均为卡特尔16种人格因素量表),共计22组数据进行统计分析。结果:女生在乐群性、聪慧性、兴奋性、敏感性、幻想性、世故性、忧虑性上的得分均高于男生,平均效果量在-0.41～-0.08之间(均P<0.01);男生在稳定性、有恒性上的得分高于女生,平均效果量分别为0.19和0.08(均P<0.001)。在多水平模型中,乐群性、独立性、紧张性不同年龄段大学生得分不同的影响(β1=0.05,-0.04,0.04;均P<0.05);稳定性、敢为性出版年代的影响(β1=0.04,0.05;均P<0.01);兴奋性不同量表版本的影响(β1=0.07,P<0.05);实验性不同样本量的影响(β1=0.001,P<0.05);实验性、紧张性受出版质量的影响(β1=0.13,-0.11;均P<0.05);独立性不同来源地区的影响(β1=-0.15,P<0.001)。结论:男女大学生在9种人格因素上存在差异,并与样本年龄段、量表出版年代、量表版本、样本量、量表出版质量、样本来源地区因素相关。