布鲁菌感染患者T细胞亚群水平及外周血miRNA-21和miRNA-146a表达临床意义

目的 探讨布鲁菌感染患者T细胞亚群水平及外周血微小RNA(miRNA)-21和miRNA-146a表达临床意义。方法 选择本院于2020年5月至2022年5月布鲁菌感染患者35例作为研究对象,其中急性组21例,慢性组14例;另选择本院于2020年5月至2022年5月健康体检者30例作为对照组。采用流式细胞术测定T细胞亚群水平;采用实时荧光定量PCR法(qRT-PCR法)测定外周血miRNA-21和miRNA-146a表达。比较各组感染性指标变化,T细胞亚群,miRNA-21和miRNA-146a水平变化。结果 急性组和慢性组PCT和CRP水平高于对照组(P<0.05);且急性组PCT和CRP水平高于慢性组(P<0.05)。急性组和慢性组CD₃₊、CD₄₊和CD₄₊/CD₈₊低于对照组(P<0.05);且急性组CD₃₊、CD₄₊和CD₄₊/CD₈₊低于慢性组(P<0.05)。急性组和慢性组m...     

老年原发性干燥综合征患者血清miR-146a和miR-155表达及临床意义

目的探究miR-146a和miR-155在老年原发性干燥综合征(PSS)患者血清中的表达及临床意义。方法老年PSS患者80例(疾病组)和同期健康体检者80例(对照组)为研究对象,采用实时荧光定量PCR法检测血清miR-146a、miR-155表达水平,采用阻抗法检测血清白细胞(WBC)含量,采用免疫比浊法测定血清免疫球蛋白(Ig)G抗体水平,采用间接免疫荧光法检测血清抗核抗体(ANA),采用免疫组化法检测血清抗SSA、抗SSB抗体,采用Pearson法分析miR-146a、miR-155及二者分别与WBC、IgG的相关性;采用受试者工作特征(ROC)曲线分析检测miR-146a、miR-155表达水平对PSS诊断价值。结果与对照组比较,疾病组血清中miR-146a表达水平明显升高(P<0.001),miR-155表达水平明显降低(P<0.001),血清中WBC数量显著减少(P<0.001),IgG水平显著增加(P<0.001);与抗ANA阴性组、抗SSA阴性组、抗SSB阴性组比较,抗ANA阳性、抗SSA阳性组、抗SSB阳性组miR-146a表达水平显著升高,miR-155表达水平显著降低(P<0.001);PSS患者血清中miR-146a与miR-155表达呈显著负相关(r=-0.718,P<0.05),与WBC呈显著负相关(r=-0.694,P<0.05),与IgG呈显著正相关(r=0.690,P<0.05);PSS患者血清中miR-155与WBC呈显著正相关(r=0.566,P<0.05),与IgG呈显著负相关(r=-0.693,P<0.05);血清miR-146a、miR-155表达水平诊断PSS疾病的曲线下面积(AUC)为0.831、0.834,截断值为0.625、0.651,特异度为0.825、0.838,灵敏度为0.800、0.813;二者联合诊断PSS疾病的AUC为0.884,特异度为0.925,灵敏度为0.763。结论 miR-146a在PSS患者血清中高表达,miR-155低表达,二者呈负相关,可能参与PSS发生发展过程,对PSS早期诊断有一定参考价值。     

miR-18a在老年胃癌患者血清中的表达及意义

目的探讨胃癌患者血清microRNA-18a表达变化及其临床诊断意义。方法采用实时荧光定量PCR检测52例老年胃癌患者和33例健康体检者血清mi R-18a表达水平。通过分析受试者工作特征曲线(ROC)判断mi R-18a表达水平在胃癌诊断中的灵敏度和特异度。酶联免疫吸附实验(ELISA)检测患者血清肿瘤标记物水平。结果胃癌患者血清mi R-18a较健康对照组高(P0.05)。血清mi R-18a水平与患者年龄、性别无关(P0.05),与分化程度、临床分期、浸润深度和淋巴结转移明显相关(P0.05或P0.01)。ROC分析结果显示最佳的mi R-18a相对表达量的临界值为2.77,诊断灵敏度77.2%,特异度82.8%,ROC曲线下面积为0.791。血清mi R-18a水平与胃癌相关抗原MG7-Ag明显正相关,与糖抗原(CA)-72-4、CA-50和甲胎蛋白(AFP)正相关,与癌胚抗原(CEA)无明显相关性。结论 mi R-18a在胃癌患者血清中水平升高,作为新的血清学指标在胃癌筛查诊断中有重要参考价值。     

微 RNA-21和微 RNA-146a 在结直肠肿瘤中的表达及临床意义

目的探讨结直肠肿瘤患者组织和血清中 miRNA-21和 miRNA-146a 的表达情况,并分析其临床意义。方法收集100例结直肠癌、80例结直肠腺瘤患者和65名健康对照者的内镜活检组织,同时收集其血清标本,应用实时荧光定量 PCR 检测 miRNA-21和 miRNA-146a 的表达水平,分析其表达与临床病理特征间的关系,并评估血清差异表达的 miRNA 在结直肠肿瘤诊断中的价值。组间比较采用 Mann-WhitneyU 检验和 Kruskal-Wallis 检验;Spearman 相关性检验用于分析组织和血清中 miRNA 表达的关联性。结果在结直肠癌和结直肠腺瘤患者病变组织中 miRNA-21的表达分别为8．573±0．898和7．746±1．183,显著高于健康对照者的6．160±0．835（U ＝120．129、33．230,P 均＜0．01）;在结直肠癌和结直肠腺瘤患者血清中的表达分别为1．829±0．303和1．624±0．226,也高于健康对照者的1．391±0．221（U ＝40．353、15．512,P 均＜0．01）;miRNA-21在结直肠癌患者组织中和血清中的表达均高于结直肠腺瘤患者（U＝11．384、10．189,P 均＜0．01）。miRNA-21在结直肠癌患者中的高表达与肿瘤临床分期、淋巴结转移有关;miRNA-21在结直肠腺瘤中的表达水平与病理类型有关。Spearman 分析结果示,miRNA-21在结直肠癌患者组织和血清中的表达呈正相关（r ＝0．459,P ＜0．01）。miRNA-146a 在结直肠癌患者组织中为2．556±0．351,血清中为0．249±0．038,低于健康对照者的3．428±0．328和0．279±0．053（U ＝102．134、30．111,P 均＜0．01）;其在结直肠腺瘤患者组织中为3．255±0．332,血清中为0．290±0．036,与健康对照者比较差异无统计学意义（U＝3．936、3．180,P 均＞0．05）。miRNA-146a 在结直肠癌患者组织中和血清中的表达均低于结直肠腺瘤患者（U＝73．809、21．123,P 均＜0．01）。结直肠癌患者miRNA-146a 的下降程度与肿瘤临床分期、肿瘤分化程度有关,而在结直肠腺瘤中的表达与临床特征间无明显关系。根据 ROC 曲线分析,鉴别结直肠癌与健康者,血清 miRNA-21、miRNA-146a 及二者联合检测 ROC 的 AUC 分别为0．889、0．791和0．863;鉴别结直肠腺瘤与健康者,其 AUC 分别为0．784、0．692和0．761;鉴别结直肠癌与结直肠腺瘤患者,其 AUC 分别为0．705、0．820和0．713。结论血清 miRNA-21和 miRNA-146a 的差异表达在结直肠癌的早期诊断中具有潜在的价值。     

Aiolos基因mRNA表达与支气管哮喘发病的相关性研究

目的探讨淋巴细胞转录因子Aiolos基因mRNA的表达水平与支气管哮喘(简称哮喘)发病的关系,为哮喘发病和治疗研究寻找新的突破点。方法选取33例哮喘患者及38位健康对照者,采用SYBR Green荧光实时定量PCR方法,以磷酸甘油醛脱氢酶(GAPDH)基因作为内参,检测两组Aiolos基因mRNA的表达水平的差异。结果利用比较平均循环数值(Ct)法测定mRNA的相对表达程度,哮喘患者组Aiolos基因与内参基因GAPDH的△Ct值为5.29±2.29,健康对照组△Ct值3.45±4.99,Aiolos基因在哮喘患者外周血中的表达水平显著低于正常人(P=0.046)。结论Aiolos基因的低水平表达可能是导致哮喘发病的原因之一。     

肾透明细胞癌miRNA-34a、Notch1和Hes1的表达及意义

目的观察miRNA-34a、Notch1和Hes1在肾透明细胞癌组织的表达，探讨其与肾癌发生发展的关系及可能的临床意义。方法运用实时荧光定量PCR方法检测miRNA-34a、Notch1和Hes1在肾透明细胞癌组织及其相应的癌旁正常组织的表达，并分析其与临床病理特征的关系。结果与正常组织相比，miRNA．34a在肾癌组织中高表达（P〈0．05），Notch1、Hes1在肾癌组织中低表达（P〈0．05）；miRNA-34a随着肾癌病理分级的增高而增高，Notch1的表达则随着肾癌病理分级的增高而降低（P均〈0．05）。结论高表达的miRNA-34a通过下调其靶基因Notch1参与肾透明细胞癌的发生发展，此有望成为肾癌诊断的分子标志物及潜在的治疗靶点。     

miR-146a在肝脏疾病中的作用

微RNA(miRNA)最早于1993年在秀丽线虫杆菌中被发现,是一类大小为18~25 nt的单链非编码RNA,广泛存在于真核生物及单核生物的细胞核内。随着研究的不断深入,发现miRNA对多种生物学过程有重要的调控作用,如细胞的有丝分裂、分化、增殖、凋亡,个体的生长发育等,其控制着体内约1/3蛋白基因的表达。miR-146a是miRNA家族的一员,近年来细胞及分子生物学研究发现其与肝脏疾病的发生发展有关。该文就miR-146a在肝脏疾病发生发展中的作用作一综述,以期提供潜在的诊断和治疗靶点,并为肝脏疾病研究提供思路。     

Notch1蛋白在人肺腺癌组织中的表达及意义

目的 研究Notch1蛋白在人肺腺癌组织中的表达及意义,探讨Notch1受体在人肺腺癌发生中的作用.方法 前期研究初步筛选出Notch1蛋白在肺腺癌组织中有强表达,本研究收集我院及新华医院2009年1月至2010年5月胸外科肺癌手术并经术后病理切片明确为肺腺癌的标本以及正常肺组织标本,以实时荧光定量PCR及Wester...     

慢性胃炎及胃癌组织中膜联蛋白A1 mRNA 的表达变化及意义

目的：观察慢性胃炎及胃癌组织中膜联蛋白A1（ ANXA1） mRNA 的表达变化，并探讨其临床意义。方法采用q-PCR方法检测40例胃癌组织、20例慢性胃炎组织中的ANXA1 mRNA，并分析其与胃癌临床病理参数的关系。结果在胃癌组织中90％（36／40）高表达ANXA1 mRNA，慢性胃炎组织中75％（15／20）高表达，P＞0．05。 ANXA1 mRNA表达与胃癌临床病理特征之间无显著相关性（P均＞0．05）。结论 ANXA1 mRNA在胃癌组织及慢性胃炎组织中均高表达，慢性胃炎与胃癌的发生发展可能有潜在相关性。     

应用实时荧光定量PCR检测结直肠癌与癌旁组织中miRNA-221的差异表达状况

目的分析结直肠癌与毗邻癌旁组织中miRNA-221差异表达状况。方法常规抽提30例结直肠癌及对照癌旁组织中总RNA,应用实时荧光定量PCR方法检测标本中miRNA-221的表达状况。结果与癌旁组织相比,结直肠癌组织中miRNA-221表达明显上调（P〈0．01）。结论实时荧光定量PCR是一种较精确的miRNA定量检测方法;miRNA-221可能通过转录后基因沉默机制促进结直肠癌的发生发展。     

Expression of ANCR in nasopharyngeal carcinoma patients and its clinical significance

Anti-differentiation non-coding RNA (ANCR), a long non-coding RNA, is involved in the development, progression and metastasis of various human cancers. However, its clinical significance in nasopharyngeal carcinoma (NPC) still remains unknown. This study aimed to investigate ANCR expression and its clinical significance in NPC.Totally, 96 NPC tissues and 24 non-cancerous nasopharyngeal mucosa tissues were used. The levels of ANCR were determined by qRT-PCR. Relationship of ANCR with patient clinical characteristics, disease-free survival and overall survival (OS) was evaluated.ANCR expression was increased in NPC tissues compared to non-cancerous nasopharyngeal mucosae. ANCR expression was significantly related to lymph node metastasis, clinical stage, and tumor differentiation (P < .05). Kaplan-Meier survival analysis revealed that high level of ANCR expression was significantly associated with poor disease-free survival but not with OS in NPC patients. Univariate analysis showed a significant association between increased ANCR expression and adverse OS (P < .05), but multivariate analysis suggested that ANCR could not be used as an independent prognostic factor for NPC patients.ANCR is involved in the development and progression of NPC, but whether it can be used as an effective therapeutic target for NPC needs further study.     

miRNA-146a and miRNA-126 as Potential Biomarkers in Patients with Coronary Artery Disease and Generalized Periodontitis

The present study aims to compare the levels of micro-RNA-146a and micro-RNA-126 in oral subgingival plaque and coronary plaque from artery walls in patients with coronary artery disease who suffer from generalized periodontitis. A total of 75 participants were selected and grouped into three categories of 25 patients each: GP+CAD, GP, and HP groups. GP+CAD consisted of patients diagnosed with generalized periodontitis (GP) and coronary artery disease (CAD). The GP+CAD group was further divided into two groups—GP+CADa: where subgingival plaque samples were collected; GP+CADb group: where coronary plaque samples were collected while the patient underwent a coronary artery bypass grafting surgery. The GP group consisted of 25 patients diagnosed with only generalized periodontitis. The HP group consisted of 25 systemically and periodontally healthy controls. miRNA-146a and miRNA126 levels were assessed in subgingival plaque (SP) samples from all groups. Results revealed that miRNA-146a was expressed at higher levels and miRNA-126 was downregulated in the GP+CAD group. microRNAs in subgingival plaque samples showed a significant correlation with the coronary plaque samples in the GP+CAD group. miRNA-146a and miRNA-126 were present in coronary artery disease patients with periodontitis. These micro-RNAs may serve as risk biomarkers for coronary artery disease and generalized periodontitis.     

肝癌患者血清miRNA-4516的表达及其临床意义和靶基因的预测

目的:探讨血清miRNA-4516在肝癌中的表达情况及其临床意义并预测其可能的靶基因.方法:收集100例肝癌患者和同期体检的100例健康人血清样本,采用RT-PCR测定血清miRNA-4516表达水平,分析其与肝癌临床病理的相关性,最后通过生物信息学预测miRNA-4516可能的靶基因.结果:经分析血清miRNA-45...     

miRNA-146a in rheumatoid arthritis: a new therapeutic strategy

Evaluation of: Nakasa T, Shibuya H, Nagata Y, Niimoto T, Ochi M: The inhibitory effect of microRNA-146a expression on bone destruction in collagen-induced arthritis. Arthritis Rheum. 63(6), 1582-1590 (2011). miRNA-146a (miR-146a) has been shown to play an important role in the negative regulation of inflammatory innate immune responses, and is differentially expressed in a number of human diseases including rheumatoid arthritis. However, evidence for the potential therapeutic use of miR-146a in human disease has been lacking. The current paper demonstrates the potential therapeutic application of miR-146a for rheumatoid arthritis by demonstrating the inhibitory effect of miR-146a on osteoclastogenesis in vitro. Moreover, using a collagen-induced arthritis mouse model, they were able to demonstrate that intravenous administration of double-stranded miR-146a resulted in the suppression of cartilage and bone destruction, despite relatively unaffected immune cell infiltration of the synovium and inflammatory cytokine expression.     

ER、PR和p53在老年子宫内膜癌患者中的表达及意义

目的探讨雌激素受体(ER)、孕激素受体(PR)和p53在老年子宫内膜癌患者中的表达及意义。方法采用免疫组织化学Envision法检测21例老年子宫内膜癌(老年组)与40例非老年子宫内膜癌(非老年组)患者中ER、PR和p53蛋白的表达。结果 ER、PR、p53阳性率在老年组和非老年组中分别为71.4%、76.2%、81%和77.5%、90%、57.5%,PR表达在两组间有显著性差异(P=0.036)。p53阳性表达与年龄呈正相关(r=0.279,P=0.029)。结论 PR和p53在不同年龄子宫内膜癌中的表达差异与肿瘤生物学行为及预后有一定关系。老年患者的PR表达较非老年患者显著降低,而这会影响两组人群孕激素的治疗效果。     

Cerebral radionecrosis in patients with nasopharyngeal carcinoma

This study involved seven patients with cerebral radionecrosis following radiation therapy for nasopharyngeal carcinoma (NPC). Their charts were reviewed and the relationship of extracranial malignancies to cerebral radionecrosis was investigated. The radiation dose ranged from 70 to 135 Gy, and the latency was from 6 to 39 months. Two of seven patients died of NPC-related complications during follow-up. The crude incidence of cerebral radionecrosis in patients with NPC was 0.93% in our series. Improvement of symptoms could be achieved by corticosteroid therapy, with or without surgery. In a review of the literature, there were 306 cases of cerebral radionecrosis in extracranial malignancies. The nasopharynx is the most common primary site in cerebral radionecrosis of extracranial malignancies, followed by the scalp and sinonasal tract. The 3-year overall survival rate in our series was 68.57%, as provided by the Kaplan-Meier product limited method. Cerebral radionecrosis in NPC patients should be differentiated from tumor recurrence, in order to apply the appropriate treatment.     

X射线照射对鼻咽癌细胞mdrl基因表达的影响及意义

目的探讨X射线照射后鼻咽癌CNE-1细胞产生多药耐药的机制.方法采用MTr法检测X射线照射后CNE-1细胞对顺铂（cD-DP）的耐药性;采用逆转录-PCR（RT-PCR）和蛋白免疫印迹（Western blot）方法,检测照射后CNE-1细胞mdrl基因的表达.结果随照射后时间的延长,cDDP对细胞的半数抑制浓度（IC50）值逐渐增大,第2～4周IC50值显著高于照射前（P＜0.01）.照射后细胞mdrl mRNA和P-gp的表达较照射前均显著增强（P＜0.01）.结论X射线照射可诱导CNE-1细胞mdd基因的表达,这可能是照射后肿瘤细胞产生多药耐药的重要机制之一.     

胃癌中VEGF及突变型p53基因表达及临床意义研究

目的探讨血管内皮生长因子(VEGF)及突变型p53(mtp53)基因表达水平与胃癌病理生理学特征之间的关系。方法采用免疫组化方法(二步法),检测86例胃癌组织及30例癌旁组织及切缘"正常"组织中的VEGF、mtp53表达水平。结果胃癌组织中VEGF、mtp53基因的表达水平显著高于癌旁组织和切缘"正常"组织(P0.01)。VEGF、mtp53基因表达水平与胃癌患者性别、年龄、组织学类型、细胞分化程度均无明显关系(P0.05),与浸润程度、淋巴结转移、远处转移状态、P-TNM分期均有密切关系(P0.01)。mtp53基因表达水平与VEGF表达水平呈正相关(P0.01)。结论VEGF、mtp53基因可能参与了胃癌的发生、进展进程,可以作为胃癌生物学行为恶化的一项指标。