共查询到17条相似文献,搜索用时 171 毫秒
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目的探讨局部晚期鼻咽癌患者血清外泌体miR-205表达以及与诱导化疗敏感性的关系。方法收集110例局部晚期(Ⅲ~Ⅳa期)鼻咽癌患者,并选择40例健康志愿者作为对照。采集血液样本,分离并鉴定血清外泌体,检测外泌体miR-205表达。分析miR-205表达与鼻咽癌患者临床病理特征的关系。患者均完成2个周期的诱导化疗,根据RECIST 1.1版疗效评价标准分为化疗敏感组和化疗耐药组。采用受试者特征工作曲线(ROC)分析外泌体miR-205表达对诱导化疗疗效的预测价值。结果与健康对照组比较,鼻咽癌患者血清外泌体miR-205表达显著升高[2.35(1.47,3.59)vs.1.04(0.73,1.82),P<0.05],且与临床分期、颈动脉鞘区受侵和咽旁间隙受侵有关(P<0.05)。68例患者获CR+PR,42例患者获SD+PD。化疗敏感组血清外泌体miR-205表达低于化疗耐药组[1.68(1.26,2.77)vs.3.71(2.17~5.06),P<0.05]。经ROC曲线分析,外泌体miR-205表达量预测局部晚期鼻咽癌患者诱导化疗敏感性的曲线下面积为0.880(95%CI:0.817~0.943,P<0.05),敏感度和特异度分别为92.9%和64.7%。结论局部晚期鼻咽癌患者血清外泌体miR-205表达量升高,可作为预测诱导化疗敏感性的有效分子指标。 相似文献
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目的 探讨胃癌患者血清外泌体粒径的变化及其在胃癌患者预后评估方面的临床意义。方法 收集2021年5月至2022年2月皖南医学院收治的胃癌病例,同时收集同期健康体检者作为对照组。采用PEG沉淀法提取32例胃癌患者及26例健康志愿者的血清外泌体,运用纳米颗粒跟踪技术(NTA)检测胃癌血清外泌体的粒径和浓度;分析血清外泌体粒径大小与胃癌临床病理特征的关系;采用受试者工作特征曲线(ROC)分析血清外泌体粒径和浓度检测对胃癌分期的预测价值。结果 胃癌患者血清外泌体的浓度为(9.53±6.24)×107particals/ml,高于健康对照组的(6.14±3.43)×107particals/ml,差异有统计学意义(P<0.05);且胃癌患者血清外泌体粒径为(108.35±16.63)nm,显著小于健康对照组的(128.23±20.24)nm,差异有统计学意义(P<0.001)。血清外泌体粒径与胃癌患者的分期相关,即随着胃癌分期的增加,血清外泌体的粒径显著下降(P<0.05);ROC曲线结果显示,血清外泌体粒径诊断胃癌的灵敏度、特异度分... 相似文献
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目的探讨miRNA-135a-5p在乳腺癌患者血清中的表达情况及其临床诊断效能。方法选取82例乳腺癌患者(乳腺癌组)、43例乳腺增生患者(乳腺增生组)和40例体检健康者(健康对照组)。分别采集3组受试者的血清样本,通过实时荧光定量聚合酶链反应(PCR)检测血清miRNA-135a-5p的相对表达量,比较不同基线特征的乳腺癌患者血清miRNA-135a-5p相对表达量,并采用受试者工作特征(ROC)曲线评价血清miRNA-135a-5p在乳腺癌中的诊断效能。结果乳腺癌组患者、乳腺增生组患者、健康对照组受试者的血清miRNA-135a-5p相对表达量分别为2.396(1.042,4.363)、0.934(0.399,1.916)、0.919(0.188,1.402);乳腺癌组患者的血清miRNA-135a-5p相对表达量高于乳腺增生组和健康对照组(P﹤0.05)。不同年龄、绝经状况、病理类型、肿瘤直径的乳腺癌患者的血清miRNA-135a-5p相对表达量比较,差异均无统计学意义(P﹥0.05);TNM分期为Ⅲ期、分化程度为低分化的乳腺癌患者的血清miRNA-135a-5p相对表达量均高于TNM分期为Ⅰ~Ⅱ期、分化程度为中高分化的患者(P﹤0.05)。采用ROC曲线评价血清miRNA-135a-5p在乳腺癌中的诊断效能,其曲线下面积为0.846(95%CI:0.608~0.972),诊断的灵敏度为81.52%,特异度为70.35%。结论与乳腺增生患者、健康体检者比较,miRNA-135a-5p在乳腺癌患者血清中的相对表达量较高,同时血清miRNA-135a-5p对乳腺癌诊断的灵敏度和特异度均较高,其可能成为乳腺癌临床诊断的生物学标志物之一。 相似文献
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摘 要:[目的] 探讨miRNAs在多发性骨髓瘤(multiple myeloma,MM)的临床价值。[方法] 选择2014年1月至2016年1月于宝鸡市中医医院收治的多发性骨髓瘤患者50例,分别取其化疗前后的血清作为病例组,另选择同期体检的50名健康志愿者血清作为对照组。分别检测受试者血清以及病例组患者化疗前后血清中miRNAs的表达含量。[结果] 病例组患者的miRNA-21和miRNA-29的表达水平显著性高于对照组(P<0.05),miRNA-15a以及miRNA-16等含量显著性低于对照组(P<0.05)。MM患者经化疗后,血清miRNA-21以及miRNA-29显著性降低(P<0.05),miRNA-15a和miRNA16的含量显著性升高(P<0.05),且化疗疗效有效的患者血清中相应miRNA指标变化水平较化疗疗效无效患者明显(P<0.05)。[结论] miRNAs可能参与多发性骨髓瘤的发生发展,其异常表达情况可能为该疾病的预测和预后评价提供临床价值。 相似文献
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目的 探索胃癌发生过程的风险miRNAs,为上消化道机会性筛查中早期胃癌识别提供依据。方法 纳入2021年6月至2023年8月在广西医科大学附属肿瘤医院、右江民族医学院附属医院、桂林市人民医院3个中心进行上消化道癌机会性筛查的人群。选取健康体检者107例、早期胃癌患者71例、进展期胃癌患者97例。首先采用转录组测序筛选差异表达miRNAs,然后在3组前瞻性人群的血浆样本中通过RT-qPCR验证差异表达的miRNAs,最后采用受试者工作特征(receiver operating characteristic,ROC)曲线评估miRNAs的诊断效能。结果 转录组测序的差异基因分析共筛选出胃癌发生过程中的6个差异表达miRNAs,包括miR-3176、miR-885-5p、miR-203a-3p、miR-452-5p、miR-223-3p、miR-219a-2-3p。RT-qPCR结果显示,miR-452-5p在早期胃癌及进展期胃癌患者中表达上调(均P<0.001)。ROC曲线显示,miR-452-5p诊断早期胃癌和进展期胃癌的曲线下面积(area under the curve,AU... 相似文献
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目的 检测脑胶质瘤患者的血清微小RNA(miRNA)-199a-5p、α-1-B-糖蛋白反义RNA1(A1BG-AS1)水平,并分析其与患者术后复发的关系。方法 选取94例接受手术治疗的脑胶质瘤患者和84例健康体检者,分别作为研究组和对照组。术后所有脑胶质瘤患者均随访2年,依据是否复发分为复发组(n=71)和非复发组(n=23)。采用聚合酶链反应(PCR)检测血清miRNA-199a-5p、A1BG-AS1水平,比较研究组和对照组、复发组和非复发组的血清miRNA-199a-5p、A1BG-AS1水平。采用Spearman相关分析法分析血清miRNA-199a-5p、A1BG-AS1水平与脑胶质瘤患者术后复发的相关性。绘制受试者工作特征(ROC)曲线,计算曲线下面积(AUC),分析血清miRNA-199a-5p、A1BG-AS1单独及联合检测对脑胶质瘤患者术后复发的评估价值。结果 研究组患者血清miRNA-199a-5p水平明显低于对照组,血清A1BG-AS1水平明显高于对照组,差异均有统计学意义(P﹤0.01)。复发组患者血清miRNA-199a-5p水平低于非复发组,血清A1BG-... 相似文献
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目的:寻找合适的外泌体mi RNA作为肿瘤生物标志物,辅助临床进行胃癌筛查。方法:将mi R-148a及mi R-106a作为潜在标志物,研究两种mi RNA在癌组织及癌旁组织表达的差异性。选取2017年9月至2018年9月在福建省立医院诊治的初诊胃癌术后标本共37对(胃癌组织及癌旁组织)进行组织学mi RNA检测。选取初诊胃癌患者83例为胃癌组,良性病变的患者78例为对照组,全部进行血清外泌体mi RNA检测。结果:与癌旁组织相比,癌组织中mi R-148a表达水平降低,mi R-106a表达水平升高,联合检测2-△△CP[△CP=CP((mi R-148a))-CP((mi R-106a))]值降低。与对照组相比,胃癌患者中血清外泌体mi R-106a表达水平降低,联合检测2-△△CP值升高。血清外泌体联合检测2-△△CP值对胃癌组和对照组鉴别的曲线下面积[AUC为0.844(95%CI:0.782~0.905,P<0.001)],大于mi R-148a及mi R-106a单独检测,其cu... 相似文献
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Alisa A. Petkevich Aleksandr A. Abramov Vadim I. Pospelov Natalya A. Malinina Elena I. Kuhareva Natalya V. Mazurchik Olga I. Tarasova 《Oncotarget》2021,12(17):1697
Patients with HCV-related cirrhosis are at risk for liver cancer development. For these patients miRNAs may serve as preclinical markers, which expression levels are deregulated in cancer and which are stable to the damaging factors partly through complex formation with proteins or packaging into exosomes. In this research we have tried to identify what miRNA fraction in plasma – exosomal or not packed into exosomes (non-exosomal) – is stronger associated with primary liver cancer. The second question was whether saliva miRNA expression levels – both exosomal and non-exosomal – are associated with primary liver cancer. We evaluated exosomal and non-exosomal miRNAs – let-7a-5p, -16-5p, -18a-5p, -21-5p, -22-3p, -34a-5p, -103a-3p, -122-5p, -221-3p, -222-3p – in plasma and saliva of patients with HCV-related liver cirrhosis (n = 24), primary liver cancer (n = 24) and healthy volunteers (n = 21). Relative expression level was calculated with normalization of exosomal miRNA to exosomal miRNA-16-5p, non-exosomal miRNA to non-exosomal miRNA-16-5p and as a ratio of exosomal miRNA to non-exosomal miRNA. In this study, non-exosomal miRNAs (let-7a, miRNA-21-5p, -22-3p, -103a, -122-5p, -221-3p and 222-3p) normalized to non-exosomal miRNA-16-5p showed strong association with liver cancer in plasma. Three miRNAs, those with the mostly pronounced change of expression levels in plasma, – miRNA-21-5p, 122-5p, 221-3p – were detected in saliva. In contrast, exosomal miRNAs show stronger association with primary liver over non-exosomal miRNAs when working with saliva. Thus, depending on the examined biological material both miRNA fractions may serve as a valuable source for diagnostic and prognostic data. 相似文献
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Exosomal microRNAs (miRs/miRNAs) have been reported to be associated with cervical cancer. The aim of the present study was to investigate circulating exosomal miRNA as a biomarker for cervical cancer diagnosis. In the present study, samples from 6 patients with cervical cancer and 6 healthy control subjects were retrieved for exosomal RNA-sequencing. The results revealed that a total of 39 miRNAs were differentially expressed between patients with cervical cancer and healthy controls (P<0.001; fold-change >2.0). Exosomal miR-125a-5p was further quantified in plasma from 60 subjects, which included 22 healthy individuals and 38 patients with cervical cancer. miR-16a-5p served as the reference miRNA for quantitative PCR analysis of exosomal miR-125a-5p in patients with cervical cancer and healthy individuals. The results revealed that exosomal miR-125a-5p expression levels in the patients with cervical cancer were significantly lower than those in the healthy controls (P<0.001). Receiver operating characteristic (ROC) curve analyses were performed and the results revealed that the level of plasma exosomal miR-125a-5p was a potential marker for differentiating between non-cervical cancer and cervical cancer, with an ROC area under the curve of 0.7129. At the cut-off value of 2.537 for miR-125a-5p, cervical cancer diagnostic sensitivities and specificities were 59.1 and 84.2%, respectively. The present study provides confirmation that exosomal miR-125a-5p could potentially serve as a biomarker for cervical cancer diagnosis. The present study involved only a small number of clinical samples; more samples are required to support the conclusions of the present study. 相似文献
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目的:回顾性分析中国西北地区非高发区N23期鼻咽癌根治性放化疗后序贯卡培他滨维持化疗的疗效,以明确卡培他滨维持化疗在局部晚期鼻咽癌治疗中的价值。方法:选取2014年1月至2016年12月空军军医大学第一附属医院初诊初治、经病理确诊为鼻咽癌N23期的患者,给予诱导化疗23个周期后联合同期放化疗,研究组(维持化疗组)在根治性放化疗后继续予以卡培他滨维持化疗4个周期,对照组(未维持化疗组)观察随访。比较两组患者的生存差异,评价两种方案的不良反应及顺应性。结果:共179例患者纳入本研究,研究组84例,对照组95例。两组病例一般临床资料均衡。全组中位随访时间44.4(5.9770.26)个月,研究组与对照组3年无远处转移生存率(distant metastasis-free survival,DMFS)分别为79.3%、68.1%(χ2=3.898,P=0.048),3年无病生存率(disease-free survival,DFS)分别为75.6%、64.2%(χ2 相似文献