胰腺癌内镜超声引导下细针穿刺活检物中肿瘤标志物检测价值研究

目的 探讨检测内镜超声引导下细针穿刺(EUS-FNA)活检物中CEA、CA19-9常用肿瘤标志物对胰腺癌诊断的价值.方法 2004年6月至2006年1月间的65例胰腺癌患者和25例慢性胰腺炎患者行EUS-FNA,采用电化学发光法对EUS-FNA活检物的离心上清进行CEA、CA19-9检测,并与该患者外周静脉血清中的CEA、CA19-9进行对比和分析.随后对临床可疑胰腺癌而EUS-FNA病理学检测阴性的12例的病例进行随访,观察该方法诊断胰腺癌的敏感性.结果 (1)胰腺癌患者中EUS-FNA标本中CEA和CA19-9均高于血清(P＜0.01).慢性胰腺炎患者EUS-FNA标本与血清中的CEA(P=0.122)和CA19-9(P=0.035)都没有明显差别.(2)对于EUS-FNA标本,胰腺癌中的CEA、CA19-9高于慢性胰腺炎(P＜0.01).对于血清标本,慢性胰腺炎与胰腺癌中的CEA没有明显差别(P=0.079),胰腺癌中的CA19-9高于慢性胰腺炎患者(P＜0.01).(3)12例可疑胰腺癌随访后确诊10例为胰腺癌,2例为慢性胰腺炎.对于胰腺癌的诊断,血清CEA的敏感性为30%,血清CA19-9为70%;EUS-FNA活检物中CEA和CA19-9的预测敏感性均为90%.结论 胰腺癌EUS-FNA活检物中的CEA、CA19-9对提高胰腺癌诊断的敏感性具有较高的临床实用价值,为提高胰腺癌的诊断率提供了一种新的方法.     

CEA、CA19-9、CA50水平与胰腺癌分期和肿瘤大小的关系

目的 探讨血清肿瘤标志物CEA、CA19-9、CA50水平与胰腺癌分期和肿瘤大小的关系.方法 分别测定35例胰腺癌和36例慢性胰腺炎患者血清CEA、CA19-9与CA50水平.外科手术和(或)病理学判定TNM分期和肿瘤大小,分析两者之间的关系.结果 血清CEA、CA19-9、CA50对胰腺癌诊断的敏感性分别为42%、82%、74%.特异性分别为75%、83%、77%.Ⅲ + Ⅳ期的CA19-9和CA50水平明显高于Ⅰ + Ⅱ期患者(P ＜ 0.05),CEA超过正常值者仅见于Ⅲ期以上胰腺癌患者.TS3 + TS4组的CEA、CA19-9、CA50水平比TS1 + TS2组明显增高(P ＜ 0.05).结论 胰腺癌血清CEA、CA19-9、CA50水平与胰腺癌分期和肿瘤大小有一定相关性,对手术前判断胰腺癌的可切除性有一定的参考价值.     

43例胰腺癌患者血清CA19-9、CA125、CEA水平检测及分析

目的 探讨血清肿瘤标志物CA19-9、CA125及癌胚抗原（CEA）联合检测对胰腺癌诊断及疗效监测的价值.方法 采用全自动电化学发光分析仪测定43例胰腺癌患者（胰腺癌组）及40例健康查体者（对照组）血清CA19-9、CA125及CEA水平,其中胰腺癌组手术前及术后1个月各测定1次;根据试剂厂家提供的参考值计算三种标志物诊断胰腺癌的敏感性、特异性及准确性.结果 胰腺癌组手术前后血清CA19-9、CA125及CEA水平均显著高于对照组（P＜0.01）,尤以术前为著（P＜0.05）;三种肿瘤标志物术后阳性率均显著低于术前（P＜0.05）,联合检测上述三种肿瘤标志物诊断胰腺癌的敏感性、特异性及准确性均显著高于单一标志物检测（P＜0.05）. 结论联合检测血清CA19-9、CA125、CEA水平对胰腺癌的辅助诊断、疗效判定、病情监测等均有重要价值.     

组织多肽特异性抗原和CA19-9在胰腺癌诊断中的意义

选择胰腺癌患者52例作为治疗组,正常献血者22例作为对照组,采用酶联免疫方法检测血清TPS与CA19-9水平.发现TPS诊断胰腺癌的敏感性和特异性分别为100%(52/52)、91%(20/22),CA19-9分别为69%(36/52)、86%(19/22).胰腺癌患者血清TPS及CA19-9高于对照组(P＜0.05).认为TPS对于胰腺癌的早期诊断优于CA19-9,TPS敏感性高于CA19-9.二者合用对临床分期、判断手术能否切除有一定的帮助.     

胰腺癌患者血清中巨噬细胞因子-1、糖链抗原19-9、糖链抗原242及癌胚抗原的检测分析

目的 探讨血清巨噬细胞因子-1（MIC-1）、糖链抗原（CA）19-9 、CA242及癌胚抗原（CEA）在胰腺癌中的应用价值.方法 分析129例胰腺癌患者和120例健康体检者4项肿瘤标志物的检测结果,计算各肿瘤标志物组合方式对提高胰腺癌诊断的作用.结果 胰腺癌患者血清中各项肿瘤标志物的水平与对照组比较差异有统计学意义（P〈0.05）.MIC-1＋CA19-9组合的敏感性与单项检测敏感性最高的MIC-1比较,差异有统计学意义（P〈0.05）;MIC-1＋CA19-9组合的特异性与单项检测特异性最高的CA19-9比较,差异无统计学意义（P〉0.05）.Ⅲ~Ⅳ期胰腺癌患者血清CA19-9、CA242水平与Ⅰ~Ⅱ期比较,差异有统计学意义（P〈0.05）.结论 4项肿瘤标志物的检测对胰腺癌的诊断均有一定的价值,MIC-1＋CA19-9联合检测可提高诊断的敏感性,同时未降低其特异性.CA19-9、CA242对判断胰腺癌的预后有一定价值.     

胰腺癌肿瘤基因标记物的研究现况

手术切除是胰腺癌惟一治愈手段,然而,85%的胰腺癌患者在就诊时已属晚期或发生远处转移,手术切除率较低,故胰腺癌的早期诊断具有非常重要的意义。胰腺癌患者血清中含有较多的肿瘤标记物,临床应用较多的是CA19-9、CA242及癌胚抗原(CEA)等。然而,现阶段血清学肿瘤标记物由于灵敏度及特异性尚未尽如人意,故临床急需有效的联合检测以提高其早期诊断率,改善整体治疗效果。     

CEA、CA19—9、CA50水平与胰腺癌分期和肿瘤大小的关系

目的探讨血清肿瘤标志物CEA、CA19-9、CA50水平与胰腺癌分期和肿瘤大小的关系。方法分别测定35例胰腺癌和36例慢性胰腺炎患者血清CEA、CA19—9与CA50水平。外科手术和（或）病理学判定TNM分期和肿瘤大小．分析两者之间的关系。结果血清CEA、CA19—9、CA50对胰腺癌诊断的敏感性分别为12％、82％、74%。特异性分别为75%、83％、77％。Ⅲ-Ⅳ期的CA19—9和CA50水平明显高于Ⅰ-Ⅱ期患者（P〈0.05）．CEA超过正常值者仅见于Ⅲ期以上胰腺癌患者。TS3-TS1组的CEA、CA19-9、CA50水平比TS1-TS2组明显增高（P〈0．05）。结论胰腺癌血清CEA、CA19—9、CA50水平与胰腺癌分期和肿瘤大小有一定相关性．对手术前判断胰腺癌的可切除性有一定的参考价值。     

内镜超声联合CA19-9对胰腺癌早期诊断及术前分期的应用价值

胰腺癌是一种病情进展快、恶性程度高、预后极差的消化系统肿瘤,其发病率在世界范围内均呈上升趋势.由于其早期症状隐匿,临床误诊、漏诊率较高,多数患者在确诊时已错失最佳治疗时机.癌抗原19-9（CA19-9）是目前胰腺癌诊断最常用的肿瘤标志物,对胰腺癌可切除性、术前分期、预后等判断具有一定的作用,但其敏感性、特异性均不高.近年来,随着影像学技术的飞速发展,内镜超声（EUS）检查术已成为诊断胰腺疾病,尤其是“小胰腺癌”诊断的首选方法,其敏感性和准确性高于CT.本研究联合应用EUS检查和CA19-9检测,探讨两者对胰腺癌早期诊断及术前分期的价值.     

胰液K-ras基因突变和血清CA19-9联合检测判断胰腺癌复发

目的研究胰液中K-ras12密码子点突变和血清CA19-9联合检测结果与胰腺癌病程的关系.方法测定32例临床及手术证实的胰腺癌患者血清CA19-9水平,同时采用内镜ERCP从胰管收集胰液标本,应用聚合酶链反应限制性片断长度多态性分析(PCR-RFLP)检测胰液K-ras基因12密码子点突变,分析K-ras12密码子点突变及血清CA19-9水平联合检测结果与胰腺癌临床特征和术后复发的关系.结果 (1)胰液中K-ras12密码子点突变率为56.3%,与肿瘤大小密切相关(P ＜ 0.05).K-ras12密码子点突变阳性、阴性表达病例3年复发率分别为66.7%和33.3%.(2)高血清CA19-9水平且K-ras12密码子点突变阳性组3年复发率为69.2%,而低血清CA19-9水平且K-ras12密码子点突变阴性组3年复发率为20.0%,两组差异显著(P ＜ 0.05).结论联合胰液中K-ras12密码子点突变和血清CA19-9检测可作为判断胰腺癌术后复发的有效指标,多因素分析对胰腺癌术后复发的判断更有价值.     

胰腺癌患者血清 Dickkopf-1水平检测及其临床意义

目的：探讨Dickkopf-1（ DKK-1）在胰腺癌辅助诊断中的价值。方法采用ELISA法检测50例胰腺癌患者（胰腺癌组）和50例健康查体者（对照组）血清DKK-1水平,采用电化学发光法检查检测CA19-9水平;比较两组DKK-1表达情况及DKK-1、CA19-9诊断胰腺癌的敏感度、特异度和准确性。结果胰腺癌组血清DKK-1水平及阳性率均明显高于对照组（P均＜0．05）;DKK-1与CA19-9诊断胰腺癌的敏感度分别为52％、78％,P＜0．05;特异度分别为92％、84％,P＞0．05;准确性分别为72％、81％,P＞0．05;若两者联合检测则敏感度和准确性分别提高至90％和84％。结论胰腺癌患者血清DKK-1水平明显增高,可作为临床中胰腺癌的辅助诊断指标;血清DKK-1与CA 19-9联合检测有助于提高胰腺癌的诊断水平。     

Estimation of Carbohydrate Antigen (CA) 19-9 Levels in Pure Pancreatic Juice of Patients with Pancreatic Cancer

Carbohydrate antigen (CA) 19-9 levels in pure pancreatic juice from patients with pancreatic cancer, chronic pancreatitis, and other diseases were determined, and their clinical value was assessed. CA 19-9 levels in pancreatic juice were generally very high, compared with those in serum. In addition, the pancreatic juice CA 19-9 levels in patients with pancreatic cancer were significantly higher than those in patients with chronic pancreatitis and other various diseases used as controls. The assay of pancreatic juice CA 19-9 seemed to be valuable in the diagnosis of pancreatic cancer, showing a diagnostic value approximately similar to that of the serum CA 19-9 assay and clearly superior to that of the serum or pancreatic juice carcinoembryonic antigen assay.     

Low efficacy of serum levels of CA 19-9 in prediction of malignant diseases in asymptomatic population in Taiwan

BACKGROUND/AIMS: Serum levels of carbohydrate antigen (CA) 19-9 have long been employed as a biomarker in diagnosing pancreatic cancer in symptomatic patients. We assessed the clinical usefulness of serum CA 19-9 in screening pancreatic cancer and other malignancies in individuals without symptoms. METHODOLOGY: The study enrolled 5,343 consecutive asymptomatic individuals who completed a health check-up comprising serum CA 19-9, chest film, abdominal ultrasonography, esophagogastroduodenoscopy, and colonoscopy or sigmoidoscopy. The sensitivity, specificity and positive predictive rate of CA 19-9 in detecting cancers were analyzed. RESULTS: There were 385 patients (7.2%) with CA 19-9 higher than 37 U/mL. Two patients diagnosed with pancreatic cancer had CA 19-9 levels of 46,885 U/mL and 88.4 U/mL, respectively. Thirteen among 58 patients with other cancers had CA 19-9 levels higher than 37 U/mL. If the cut-off value of CA 19-9 was set at 37 U/mL, the sensitivity and specificity for pancreatic cancer and other cancers were 100% and 92.8%, as well as 22.4% and 92.9%, respectively. However, the positive predictive rates for pancreatic cancer and other cancers were as low as 0.5% and 3.4%, respectively. CONCLUSIONS: Efficacy of CA 19-9 in predicting either pancreatic cancer or other cancers in the asymptomatic population is low.     

New observations on the utility of CA19-9 as a biomarker in Lewis negative patients with pancreatic cancer

Background

Carbohydrate antigen 19-9 (CA19-9) is the best-validated biomarker for pancreatic cancer. The National Comprehensive Cancer Network (NCCN) guideline asserts that “CA19-9 will be undetectable in Lewis antigen-negative individuals”. However, reports of CA19-9 secretion and its significance in Lewis (-) patients with pancreatic cancer have been inconsistent. This study was to examine serum CA19-9 levels in patients with pancreatic cancer according to Lewis status.

肿瘤标志物CA242与CA19-9对胰腺癌的诊断价值

目的:比较血清肿瘤标志物CA242与CA19-9对胰腺癌的诊断价值。方法:1996年4月至1997年6月,北京医院对门诊及住院197例患者进行了血清CA19-9的检测,148例进行了CA242的检测,其中25例为临床明确诊断为胰腺癌,12例为急性胰腺炎,18例为良性阻塞性黄疸。结果显示:胰腺癌患者血清CA19-9和CA242较对照明显增高,其中25例胰腺癌患者有21例CA19-9阳性,检测的灵敏度为84％,特异性为74.4％,有17例CA242阳性,检测的灵敏度为68％,特异性为87.8％。CA242与CA19-9比较,灵敏度无显著差异(0.10相似文献   

Significance of serum receptor-binding cancer antigen (RCAS1) in pancreatic cancer and benign pancreatobiliary diseases.

BACKGROUND/AIMS: RCAS1 is a novel tumor marker, and there are no sufficient data about the utility of this antigen as a serum tumor marker and about its tumor specificity. We aimed at measuring the serum levels of RCAS1 in patients with pancreatic cancer and at determining its diagnostic efficacy. METHODS: Sera collected from patients with pancreas adenocarcinomas (39 cases) and benign biliary and pancreatic diseases (19 cases) and from healthy volunteers (13 cases) were analyzed for RCAS1 and the results compared with CA19-9. The relation between serum RCAS1 and tumor stage was also evaluated. RESULTS: The serum RCAS1 levels exceeded the normal limit in 92.3, 26.3, and 23.0% of the patients with pancreatic cancer and benign biliary and pancreatic diseases and healthy volunteers, respectively. RCAS1 had a specificity similar to that of CA19-9 in pancreatic cancer, whereas RCAS1 had a higher sensitivity (p < 0.05). Both tumor markers had similar predictive values of positive and negative tests for pancreatic cancer. The RCAS1 level was less influenced than the CA19-9 level by biliary stenoses. The median serum levels of RCAS1 increased, as the tumor stage increased. CONCLUSIONS: RCAS1 is a valuable serum marker for the diagnosis of pancreatic cancer. The RCAS1 and CA19-9 levels increase the diagnostic efficiency of each other in pancreatic cancer.     

Serum level of TSGF, CA242 and CA19-9 in pancreatic cancer

AIM: To establish a method to detect the expression of the tumor specific growth factor TSGF, CA242 and CA19-9 in serum and evaluate their value in diagnosis of pancreatic cancer. METHODS: ELISA and Biochemical colorimetric assay were used to detect the serum content of TSGF, CA242 and CA19-9 in 200 normal cases, 52 pancreatitis patients and 96 pancreatic cancer patients. RESULTS: The positive likelihood ratios of TSGF, CA242 and CA19-9 were 5.4, 12.6 and 6.3, respectively, and their negative likelihood ratios were 0.10, 0.19 and 0.17, respectively. With single tumor marker diagnosed pancreatic cancer, the highest sensitivity and specificity of TSGF were 91.6% and 93.5%. In combined test with 3 markers, when all of them were positive, the sensitivity changed to 77.0% and the specificity and the positive predictive value were 100%. The levels of TSGF and CA242 were significantly higher in the patients with pancreatic cancer of head than those in the patients with pancreatic cancer of body, tail and whole pancreas, but the expression of CA19-9 had no correlation with the positions of the pancreatic cancer. The sensitivity of TSGF, CA242 and CA19-9 was increased with the progress in stages of pancreatic cancer. In stage I, the sensitivity of TSGF was markedly higher than CA242 and CA19-9. CONCLUSION: The combined use of TSGF, CA242 and CA19-9 expressions can elevate the specificity for pancreatic cancer diagnosis. And it shows that it plays an important role to differentiate positions and tissue typing. It is a forepart diagnosis for the pancreatic cancer by combination checking. There is very important correlation between the three markers and the pancreatic cancer.     

CA-125, but not galectin-3, complements CA 19-9 for discriminating ductal adenocarcinoma versus non-malignant pancreatic diseases

Background/objectivesCA 19-9 is the gold standard biomarker of pancreatic adenocarcinoma despite several weaknesses in particular a high rate of false positives or negatives. CA-125 corresponding to MUC16 and galectin-3, a lectin able to interact with mucin-associated carbohydrates, are tumor-associated proteins. We investigated whether combined measurement of CA 19-9, galectin-3 and CA-125 may help to better discriminate pancreatic adenocarcinoma versus non-malignant pancreatic diseases.MethodsWe evaluated by immunohistochemistry the expression of MUC4, MUC16 (CA-125) and galectin-3 in 31 pancreatic adenocarcinomas. We measured CA 19-9, CA-125 and Gal-3 in the serum from patients with pancreatic benign diseases (n = 58) or adenocarcinoma (n = 44). Clinical performance of the 3 biomarkers for cancer diagnosis and prognosis was analyzed.ResultsBy immunohistochemistry, MUC16 and Gal-3 were expressed in 74% and 84% of adenocarcinomas versus 0% and 3.2% in peri-tumoral regions, respectively. At the serum level, CA 19-9 and CA125 were significantly higher in patients with pancreatic adenocarcinoma whereas Gal-3 levels did not differ. The performance of CA 19-9 for cancer detection was higher than those of CA-125 or Gal-3 by ROC analysis. However, CA-125 offers the highest specificity for malignancy (81%) because of an absence of false positives among type 2 diabetic patients. Cancer deaths assessed 6 or 12 months after diagnosis varied according to the initial CA-125 level (p < 0.006).ConclusionGal-3 is not an interesting biomarker for pancreatic adenocarcinoma detection. CA 19-9 alone exhibits the best performance but measuring CA-125 provides complementary information in terms of diagnosis and prognosis.     

Clinical usefulness of carbohydrate antigen 19-9 as a screening test for pancreatic cancer in an asymptomatic population

BACKGROUND AND AIM: Although the prognosis for pancreatic cancer is generally poor, it is well known that the survival rate for resected pancreatic cancer is much higher than that for more conservative treatment. The importance of early detection is emphasized for resection of pancreatic cancer. Measurement of serum carbohydrate antigen (CA) 19-9 has shown satisfactory sensitivity and predictive value in symptomatic patients, but no available data has been found on healthy asymptomatic subjects. Thus, the authors aimed to determine the clinical usefulness of CA 19-9 as a screening tool for pancreatic cancer in asymptomatic subjects. METHODS: From December 1994 to November 2000, 70 940 asymptomatic persons visiting the Health Promotion Center at the Samsung Medical Center, Seoul, Korea, participated. All subjects underwent abdominal ultrasonography and serum CA 19-9 measurement. The authors analyzed the sensitivity, specificity, and predictive values of CA 19-9 for detecting pancreatic cancer. Also, those subjects who had a serum CA 19-9 level above the cut-off value were followed up using a serial check of CA 19-9, computed tomography, or endoscopic retrograde cholangiopancreatography. RESULTS: The number of subjects with a level of CA 19-9 above the cutoff of 37 U/mL was 1063 (1.5%), including four cases diagnosed with pancreatic cancer. The prevalence of pancreatic cancer over the age of 30 years is 13.66 per 100 000 population in Korea. Therefore, the sensitivity is 100% and the specificity 98.5%. However, the positive predictive value of CA 19-9 for detecting pancreatic cancer is only 0.9% in the asymptomatic population. CONCLUSION: Mass screening for pancreatic cancer using CA 19-9 levels in asymptomatic subjects is ineffective because of a very low positive predictive value, despite its high sensitivity and specificity.