影响尿核基质蛋白诊断膀胱癌的干扰因素

目的：探讨尿核基质蛋白(NMP22)在膀胱癌诊断中的特异性和阳性预测值价值。方法：对196例临床怀疑膀胱癌的患者，在膀胱镜检查前留取新鲜自排尿．每个尿标本均行尿细胞学、尿常规、尿培养和NMP22检测。所有患者均行膀胱镜检查。结果：196例中，病理检查证实膀胱癌41例，其他疾病155例。41例膀胱癌患者中，检测出NMP22 33例(80．5%)，而尿细胞学检测阳性仅为11例(26．8％)。在67例NMP22异常者中，除33例诊断为膀胱癌外，假阳性为34例，故特异性和阳性预测值分别为78．1％和49．3％。假阳性结果主要出现在泌尿系感染或炎症、泌尿系结石、泌尿系异物、肠道代膀胱、其他泌尿生殖系肿瘤和器械操作6种情况．排除这6种干扰因素后，NMP22检测的特异性和阳性预测值分别升高至96．2％和91．7％。结论：排除干扰因素能明显改善NMP22诊断膀胱癌的特异性和阳性预测值，提高其临床应用价值。     

尿核基质蛋白检测在膀胱癌诊断中的应用价值评定

目的:研究尿核基质蛋白(NMP22)在膀胱癌临床诊断和预后判定中的应用价值。方法:采用双单抗夹心酶联免疫法(ELISA)检测84例膀胱肿瘤怀疑患者和20例正常健康志愿者尿液中NMP22的含量,同时行尿脱落细胞学检测。结果: 84例中,病理检查证实膀胱肿瘤56例, 良性泌尿系疾病28例。膀胱癌患者尿中NMP22水平(53. 0×103U/L)明显高于良性泌尿系疾病(8. 8×103U/L)和正常人群(7. 7×103U/L), NMP22水平与膀胱癌浸润深度和分化程度呈正相关;以104U/L为阳性临界值,NMP22诊断膀胱肿瘤的敏感性要明显高于尿脱落细胞学检查。结论:NMP22是膀胱癌患者尿中的良好瘤标,与膀胱癌侵袭能力和恶性程度密切相关,可以作为膀胱癌诊断和预后评估的指标。     

尿细胞学、NMP22和B超联合检查在膀胱癌患者随访中的应用

目的：了解联合应用尿细胞学、尿核基质蛋白22(NMP22)、经腹B超检查在膀胱癌术后患者随访中的价值。方法：对36例膀胱癌术后随访患者先行尿细胞学、尿NMP22、经腹B超检查，再行膀胱镜检查，以膀胱镜检查及活检为金标推，分析各种检查结果，。结果：36例经膀胱镜检查及活检证实肿瘤复发17例。尿细胞学、尿NMP22、经腹B超检查的灵敏度分别为47．1％、82．4％和70．6％。三种检查联合应用的灵敏度为94．1％，与膀胱镜检查比较差别无显著性意义。结论：尿细胞学、尿NMP22、经腹B超联合检查用于膀胱癌患者的术后随访灵敏性较高。     

尿核基质蛋白22在膀胱癌术后复发监测中的应用

目的:探讨尿核基质蛋白22(NMP22)检测在膀胱癌术后复发监测中的应用价值.方法:采用ELISA法检测93例膀胱癌术后患者尿NMP22值,并分为复发组和未复发组进行比较.结果:复发组患者尿NMP22值高于未复发组(P＜ 0.01),以6 IU/L为最适临界值,敏感性 95.1%,特异性 69.2%,阳性预测值 70.9%,阴性预测值 94.7%.结论:尿NMP22检测可作为膀胱癌术后复发的常规监测方法,以6 IU/L为临界值是较适宜的.     

膀胱癌患者尿NMP22测定的临床意义

目的：评价尿核基质蛋白22（NMP22）在膀胱癌诊断和预后判定中的应用价值。方法：采用ELISA法测定18例膀胱癌和20例泌尿系良性疾病患者尿液中NMP22值,及10例膀胱移行细胞癌患者术后尿NMP22值。结果：18例膀胱癌患者尿NMP22的中位值为44．3IU／L,20例泌尿系良性疾病患者尿NMP22的中位值为5．8IU／L,二者相比判别有显著性意义（P＜0．02）。以10IU／L为临界值,诊断膀胱癌的敏感性为83％,特异性为70％,阴性预测值为82％。10例膀胱移行细胞癌患者术后尿NMP22中位值为7．8IU／L,与术前相比明显下降（P＜0．01）。尿NMP22在肿瘤分级间的差别无显著性意义。结论：尿NMP22作为一种灵敏、简便的早期诊断膀胱癌的瘤标,对于预后判断可能具有应用价值。     

NMP 22在膀胱癌早期诊断中的临床研究

目的评价尿液NMP 22含量测定在膀胱癌早期诊断中的应用价值,寻找早期诊断膀胱癌的理想方法.方法采用化学发光法测定30例健康人尿中NMP 22水平,以结果的95%可信区间作为正常对照值(1.9～14.7)U/ml,NMP 22＞10 U/ml为阳性界值.对镜下血尿者51例,有膀胱癌手术史者9例,肉眼血尿者8例的尿液NMP 22值进行测定.男52例,(60±10)岁,女16例,(41±12)岁.68例NMP 22检测后均进行尿细胞学检查和膀胱镜检查,可疑处取材活检18例.统计学比较尿NMP 22和尿细胞学检测结果.结果68例患者中NMP 22阳性22例,其中经活检证实为膀胱癌11例(含术后复发者1例).NMP 22检测灵敏度为100%(11/11),特异度为81%(46/57).尿细胞学检查灵敏度为35%(4/11),特异度为93%(54/57).NMP 22诊断灵敏度高于尿细胞学检查(P＜0.01).11例NMP 22假阳性结果患者随访12个月,确诊为膀胱癌1例(随访至11个月).结论尿NMP 22检测为早期诊断膀胱癌提供了新的方法.     

NMP22联合尿脱落细胞学检测在膀胱癌术后复发监测中的价值

目的：探讨尿核基质蛋白22（NMP22）联合尿脱落细胞学榆测对膀胱移行细胞癌诊断及术后复发监测中的应用价值。方法：采用酶联免疫法（EI。ISA）检测60例膀胱癌者、20例非膀胱癌者、20例健康志愿者尿中NMP22水平,并同时行尿脱落细胞学检查,并对结果进行比较。结果：膀胱癌者NMP22平均为35．6×10^3U／L,高于非膀胱癌者（7．8×10^3U／L）和健康志愿者（7．2×10^3U／L,P〈0．05）;膀胱癌复发患者（31．5×10^3U／L）高于未复发患者（8．O×10^3U／L,P〈0．05）;膀胱癌者NMP22的敏感性高于尿脱落细胞学,而其特异性低于尿脱落细胞学。结论：尿NMP22对膀胱移行细胞癌具有高灵敏度和无创伤性,是检测膀胱移行细胞癌的有效标志物;联合尿细胞学检查可进一步提高膀胱癌术后复发的诊断率。     

NMP22联合FISH技术在血尿患者膀胱癌筛查中的应用

膀胱癌是泌尿系最常见的恶性肿瘤,目前膀胱癌的诊断主要以膀胱镜和尿脱落细胞学检查为主。本研究主要探讨核基质蛋白22(nuclear matrix protein 22,NMP22)联合荧光原位杂交(fluorescence in situ hybridization,FISH)技术检测在血尿患者膀胱癌筛查中的应用价值。对象与方法一、病例资料收集2008年1~10月间在我科住院有不同程度血尿的     

核有丝分裂器蛋白在膀胱癌诊断中应用的研究

目的 :探讨核有丝分裂器蛋白 (NMP 2 2 )在诊断膀胱癌中的临床应用价值。方法 :选择可疑膀胱癌患者 70例 ,应用美国MatritechNMP 2 2试剂盒检测尿中NMP 2 2的含量 ,同时行尿脱落细胞学检查并进行对比。结果 :膀胱癌组与非膀胱癌组患者尿中NMP 2 2值分别为 (5 5 .84± 4 7.89)× 10 3U L、(15 .5 8± 17.73)× 10 3U L ,差异有极显著性意义 (P <0 .0 1) ,且膀胱癌组NMP 2 2水平与肿瘤分期分级有关。当以 14× 10 3U L作为诊断参考值时 ,NMP 2 2诊断膀胱癌的敏感度为 90 .6 3% ,特异度为 76 .32 %。结论 :NMP 2 2诊断膀胱癌具有简单、无创伤、敏感度高、可定量分析等优点 ,可作为膀胱癌筛选和术后监测的一个指标     

尿生存素检测在膀胱癌诊断中的价值探讨

目的:探讨尿生存素(survivin)检测在膀胱肿瘤诊断中的价值。方法:收集膀胱癌患者47例,泌尿系统非尿路上皮肿瘤22例,泌尿系非肿瘤患者9例,健康志愿者8例的尿液。ELISA法检测尿中survivin浓度,并用半定量RT-PCR和Western-blot方法验证其检测结果的准确性。结果:以1ng/ml为限,膀胱癌组尿survivin测定结果和其他各组相比阳性率明显增高,χ2检验结果显示差异有统计学意义(P<0.05)。半定量RT-PCR和Western-blot结果证明检测结果的准确性较高。结论:尿survivin浓度的ELISA方法检测可能是一种敏感性高、特异性强、无创、简便的膀胱癌群体筛查和术后随访的检查方法。     

核基质蛋白22在膀胱移行上皮癌诊断中的价值(附48例报告)

目的:评价患者尿中核基质蛋白22(NMP 22)在泌尿系上皮肿瘤诊断中的意义。方法:采用ELISA法测定48例膀胱移行上皮肿瘤患者尿中NMP 22的值,并与尿脱落细胞学检查进行比较。结果:48例膀胱移行上皮肿瘤患者尿NMP 22的中位值为19.53 IU/L。以10 IU/L为临界值,NMP 22诊断膀胱移行上皮肿瘤的敏感性为86.96％,特异性为50％;尿脱落细胞学检查的敏感性为17.39％,特异性为100％。尿NMP 22在肿瘤的分期、分级间的差别无显著性意义(P>0.05)。结论:尿NMP 22检测比尿脱落细胞学检查更敏感,可以作为血尿患者和既往膀胱肿瘤患者的首选筛选方法。     

Evaluation of the clinical value of urinary NMP22 as a marker in the screening and surveillance of transitional cell carcinoma of the urinary bladder.

PURPOSE: To prospectively evaluate the clinical role of urinary NMP22 as a marker for transitional cell carcinoma of the urinary bladder in screening and surveillance settings. PATIENTS AND METHODS: Single voided specimens were obtained from 211 consecutive patients who presented for flexible cystoscopy. Of these, 96 patients presented with haematuria or irritative symptoms (screening), the remaining 115 were patients with known transitional cell carcinoma on follow-up (surveillance). The urine sample was used for urine microscopy, cytology and for measuring NMP22 levels. RESULTS: Bladder tumours were found in 16 of 96 (16.6%) patients in the screening group and 17 of 115 (15.6%) patients on surveillance. The NMP22 levels were significantly lower in patients with lower stage (Ta vs. T1-3), low grade (G1, G2 vs. G3, CIS) and papillary morphology. The optimum threshold for NMP22 obtained from the ROC curve was 4.75 U/ml, providing a sensitivity, specificity, positive predictive value and negative predictive value of 42.4, 85, 38.5 and 88.6%, respectively. Sensitivity and specificity were better in patients being screened than in those on surveillance. In both groups, urinary NMP22 had similar diagnostic characteristics as urinary cytology. CONCLUSIONS: Urinary NMP22 levels are significantly higher in patients with bladder tumour than in those negative for tumours, and test predictability improves with increasing stage and grade. The overall sensitivity for urinary NMP22 is similar to, but not superior to urine cytology. Our study suggests that the clinical role of urinary NMP22 as a diagnostic marker can be at best supportive only.     

核基质蛋白22在上尿路移行细胞癌诊断中的作用

目的　探讨核基质蛋白 2 2 (NMP 2 2 )在上尿路移行细胞癌诊断中的作用。　方法　对2 4例肾盂癌及输尿管癌患者和 2 0例良性泌尿系疾病患者尿中NMP 2 2浓度及尿细胞学进行检测 ,计算诊断敏感性和特异性。　结果　 2 4例TCC患者尿液标本尿细胞学阳性 14例 ,NMP 2 2阳性 2 1例 ;2 0例良性泌尿系疾病患者尿液标本细胞学阳性 1例 ,NMP 2 2阳性 4例 ,NMP 2 2的诊断敏感性和特异性分别为 87.5 %和 80 .0 % ,尿细胞学为 5 8.3%和 95 .0 % ,比较二者敏感性差别有显著性意义。　结论　NMP 2 2可能成为检测上尿路移行细胞癌的良好辅助手段     

Comparison of the nuclear matrix protein 22 with voided urine cytology and BTA stat test in the diagnosis of transitional cell carcinoma of the bladder.

OBJECTIVE: To assess sensitivity, specificity, accuracy, positive predictive value and negative predictive value of nuclear matrix protein 22 (NMP22) test, BTA stat test and cytology in the urine of patients with a spectrum of urologic conditions, including bladder cancer. METHODS: A total of 140 patients (40 with bladder cancer) provided a urine sample which was divided into appropriate aliquots for each of the tests cited above. The endoscopist, pathologist, cytologist and the person performing BTA stat test and NMP22 test were blinded as to the results of the other tests. RESULTS: Receiver-operating characteristics curve interpretation determined that 12.0 U/ml was an optimal reference value for NMP22 to detect transitional cell carcinoma of the bladder in this patient group. Comparative results demonstrate a clear superiority of NMP22 and BTA stat tests in sensitivity in bladder cancer detection (p < 0.01), while cytology and NMP22 were better than BTA stat test in specificity (p < 0.05). CONCLUSIONS: NMP22 and BTA stat test results represented significant improvement over urinary cytology for detection of transitional cell carcinoma. The sensitivities of NMP22 and BTA stat tests for detection of transitional cell carcinoma in this group of patients were as much as twice that of cytology. When the cutoff value of urinary NMP22 was set at 12.0 U/ml, NMP22 was more accurate than the other tests (p < 0.05).     

NMP22与BTA stat检测在膀胱肿瘤诊断中的应用

目的评价NMP22和BTAstat诊断膀胱肿瘤的价值.方法对82例临床怀疑膀胱肿瘤的患者,在膀胱镜检查前将尿样分为3份,分别进行NMP22、BTAstat和脱落细胞学检测,分析比较3种方法的敏感性、特异性和阳性预测价值.结果82例中病理证实膀胱肿瘤32例,其他疾病50例.NMP22诊断膀胱肿瘤敏感性为87.5%,与BTAstat(65.6%)、细胞学(21.9%)比较,差别有显著性意义(P<0.05).3种方法诊断特异性分别为84.0%、64.0%和100.0%.阳性预测值分别为77.8%、53.9%和100.0%.结论NMP22是一种简单、敏感、非侵袭性的早期诊断膀胱肿瘤的肿瘤标记物.     

Urinary nuclear matrix protein 22 for diagnosis of renal cell carcinoma

OBJECTIVE: To determine the incidence of positive urinary nuclear matrix protein 22 (NMP22) values, which are currently used to detect transitional cell carcinoma of the bladder, in renal cell carcinoma (RCC). MATERIAL AND METHODS: Urinary NMP22 values were determined preoperatively in 41 patients in whom a solid renal mass had been detected using CT and who were scheduled for radical nephrectomy; 38 of these patients were diagnosed with RCC. Two patients had xanthogranulomatous pyelonephritis and one had metastasis of a small cell adenocarcinoma to the kidney; these patients were excluded from the study. A total of 30 patients with kidney stones and simple renal cysts were used as controls. RESULTS: The urinary NMP22 values of the RCC patients were significantly higher than those of the controls. Of the 38 patients with RCC, 23 (60.5%) had positive urinary NMP22 values > or =10 U/ml. There were four measurements above this cut-off level in the control group. Urinary NMP22 values increased with an increase in pathologic tumor stage, but the correlation was not statistically significant. There was no correlation between grade and urinary NMP22 or between tumor burden and urinary NMP22. CONCLUSIONS: The urinary NMP22 test may help to diagnose RCC and may also result in an increase in the incidental discovery of RCC. As elevated urinary NMP22 levels have also been found to occur in RCC, patients with suspected bladder cancer and positive urinary NMP22 levels should be more broadly evaluated. Specific NMP assays for renal tumor cells may increase the utility of the test for RCC.     

NMP22 is a sensitive, cost-effective test in patients at risk for bladder cancer

PURPOSE: The early diagnosis of bladder cancer is central to its effective treatment. This study was designed to determine the clinical use of NMP22 as a urinary marker for the early detection of transitional cell carcinoma of the bladder in patients with hematuria or other indications at risk for malignancy. The sensitivity and specificity of the NMP22 test were compared with urinary cytology, and the results of both tests were then compared to cystoscopic findings. We also determined if NMP22 provided a cost advantage over our current modalities in our patient population. MATERIALS AND METHODS: Each patient submitted a single voided urine which was divided in 2 parts, of which 1 was stabilized with the NMP22 urine collection kit and 1 was preserved in the appropriate cytology medium for cytopathological testing. All patients provided the urine samples before cystoscopic examination. Of the 330 patients 114 (34.5%) presented with microscopic hematuria and 66 (20.4%) with gross hematuria. Other indications for cystoscopy included atypical cytology or unexplained voiding symptoms refractory to medical therapy. RESULTS: There were 18 patients with biopsy confirmed bladder cancer and 312 with benign conditions of the bladder. Median NMP22 value for the malignant bladder tumors was 31.6 units per ml. (95% confidence interval 13.4 to 90.9) and 4.3 units per ml. (3.8 to 4.8) for benign conditions of the bladder. The urinary NMP22 values in the bladder cancer group were significantly higher than those in the benign condition group (p <0.001). The sensitivity of NMP22 was 100% with a specificity of 85% at a reference value of 10.0 units per ml., while cytology had a sensitivity of only 33% and specificity of 100%. Given a negative predictive value of 100% for NMP22, a cost savings of $28,302 to $111,072 (depending on the type of insurance carrier) would have been achieved if it was used alone as the indication for cystoscopy. CONCLUSIONS: This study indicates that urinary NMP22 is a simple, noninvasive, cost-effective marker for the detection of bladder cancer.