血清CA125,CA199,CA50含量对消化系肿瘤的诊断价值

目的评价血清ＣＡ１２５，ＣＡ１９９，ＣＡ５０含量对消化系肿瘤的诊断价值．方法消化系肿瘤患者１５８例，其中肝癌３８例，食管癌２１例，胃癌５６例，结直肠癌３６例，胰腺癌７例；消化系良性疾病患者１０６例，其中肝硬变５７例，消化性溃疡４９例；正常对照者４０例．全部受测对象均空腹抽静脉血，分离血清，－２０℃贮存备测．采用ＲＩＡ法测定血清ＣＡ１２５，ＣＡ１９９，ＣＡ５０含量，使用国产ＳＮ６９５型γ计数仪．数据均用ｘ±ｓ表示，以正常ｘ±２ｓ作为上限计算阳性率．结果肝癌、胃癌、胰腺癌、结直肠癌和食管癌血清（ＣＡ含量均以ｋＵ／Ｌ表达）ＣＡ１２５（分别为２２２±１１６，７９±１７，１３５±７９，６９±２３和７２±２６），ＣＡ１９９（２３７±１０８，２８１±１３２，８３８±２２４，２５２±１３６和２７３±１４６）和ＣＡ５０含量（２５±９，２０±７，１８±９，１８±８和１７±７）显著高于正常对照组及消化道良性病变组（Ｐ＜００１）．消化道肿瘤有腹腔及远处转移者，其血清ＣＡ１２５，ＣＡ１９９，ＣＡ５０含量升高更为明显．结论血清ＣＡ１２５，ＣＡ１９９，ＣＡ５０均为较好的肿瘤标记物，有助于诊断消化系统肿瘤     

血清CA72-4在消化系癌症中的临床应用

目的:探讨血清肿瘤标志物糖类抗原72-4(carbohydrate antigen 72-4,CA72-4)在消化系癌症中的应用意义和临床价值.方法:采用电化学发光法分别测定310例消化系癌症患者(肝癌52例,食管癌36例,胰腺癌50例,胆道癌35例,胃癌74例,肠癌63例)及50例对照组消化系良性病变患者的血清CA72-4水平.结果:CA72-4在肝癌组阳性率为21.15%,食管癌组27.78%,胰腺癌组36.00%,胆道癌组37.14%,胃癌组51.35%,肠癌组61.90%.各消化系癌症组血清CA72-4水平均显著高于对照组,差异有统计学意义.结论:血清CA72-4在消化系癌症中有较高的阳性率,尤其是胃癌和肠癌,同时对鉴别消化系良恶性肿瘤有重要的价值,应加大临床的推广应用.     

联合检测CA 19-9、CA50、MG—AG在诊断消化系统肿瘤中的价值

目的 探讨肿瘤标记物CAl9-9、CA50、MG-AG在消化道肿瘤诊断上的价值及联合检测的优越性。方法 采用放免法(RIA)和免疫放射分析法(IRMA)分别测定69例消化道肿瘤患者血清中CAl9-9、CA50、MG-AG的含量，并与其各自的良恶性疾病进行对照，分析各种肿瘤标记物联合检测与单项检测的相关性结果。结果 单项检测中，除MG-AG在胰腺良恶性疾病中无明显差异外。其他肿瘤标记物在消化道良恶性疾病中均有显著性差异。MG-AG在胃癌中表现最佳。其敏感性、特异性、准确性分别为54．1％、91．3％和77．8％，而胰腺癌以CA19-9和CA50(均为77．7％)效果最佳。若三项联合检测可明显提高临床检测效果。使敏感性、准确性上升，其中胃癌分别上升至75．7％和83．3％，胰腺癌均上升至100％。结论 肿瘤标记物CA19-9、CA50、MG-AG对消化系恶性肿瘤的临床诊断有一定价值，而联合检测可提高其敏感性和准确性，效果优于单项检测。     

血清胃癌相关抗原MG_7-Ag对胃癌诊断价值探讨

目的为探讨血清MG7-Ag检测对胃癌诊断价值．方法采用酶免疫法检测了107例消化道各恶性肿瘤患者，32例胃良性疾病患者及34例正常对照者血清MG7－Ag和CEA水平．结果41例胃癌、24例结直肠癌、9例胰腺癌和19例原发性肝癌患者血清MG7－Ag的阳性率分别为46．3％，45．8％，44．4％和42．1％，均显著高于对照组和胃良性疾病组（P＜0．05），其中胃癌稍高，但相互比较，无显著性差别．14例食管癌患者血清MG7-Ag阳性率为28．6％，与胃良性疾病组和对照组比较均无显著性差别；消生道恶性肿瘤患者血清CEA含量与MG7-Ag含量呈大致的平行关系．结论血清MG7－Ag对胃癌的诊断没有很好的特异性，但对消化道恶性肿瘤中的胃癌、结直肠癌、胰腺癌和原发性肝癌的诊断还是一种较灵敏的，相对特异的肿瘤标志物．     

CEA、CA19-9、CA50水平与胰腺癌分期和肿瘤大小的关系

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.     

血清肿瘤标志物在五种消化系统肿瘤诊断中的价值

目的评价12种血清肿瘤标志物在不同消化系统肿瘤中的临床诊断价值。方法研究对象包括直肠癌、结肠癌、胃癌、肝癌以及胰腺癌五种消化系统肿瘤患者共149例,健康人群299例。流式荧光发光法检测12种肿瘤标志物(AFP、CA125、CYFRA21、CA242、CEA、f-βHCG、NSE、t-PSA、f-PSA、CA19-9、SCCA、CA15-3)在这5种消化系统肿瘤中的水平。结果 CYFRA21与CA19-9在所有肿瘤患者中检出率相对较高;CA19-9以及CA242在胰腺癌中的灵敏度极高;CYFRA21+CA242+CEA+NSE+CA19-9联合检测可有效提高直肠癌的检出率,CA125+CYFRA21+CA242+CEA+NSE+CA19-9联合检测可提高胰腺癌的检出率,CA125+CYFRA21+CA19-9联合检测可提高胃癌的检出率,CA242+CEA+NSE+CA19-9+CYFRA21联和检测可提高结肠癌的检出率,AFP+CA125+CYFRA21+CA242+CEA+NSE+CA19-9联合检测可提高肝癌的检出率。结论多种标志物适当组合之后联合检测可有效提高特定肿瘤的检出率,具有一定的临床参考价值。     

血清CA-50含量对消化系肿瘤的诊断价值

目的评价血清ＣＡ＿５０对消化系肿瘤的诊断价值．方法消化系肿瘤患者１７２例，其中肝癌５４例，胃癌４３例，大肠癌５７例，胰腺癌１８例；消化系良性疾病患者８８例，其中肝硬变３６例，胃良性病变（胃炎、胃溃疡）５２例；正常对照者６０例．全部受测对象均抽空腹静脉血，分离血清，－２０℃贮存备测．采用ＲＩＡ法测定血清ＣＡ５０含量．放免药盒由中国医学科学院肿瘤研究所提供，使用国产ＦＪ６３０型γ计数仪．数据均用ｘ±ｓ表示，以正常ｘ＋２ｓ作为上限计算阳性率．结果肝癌、胃癌、胰腺癌和大肠癌血清ＣＡ５０含量分别为２４０ｋＵ／Ｌ±２１８ｋＵ／Ｌ，１２１ｋＵ／Ｌ±１０６ｋＵ／Ｌ，１８２ｋＵ／Ｌ±１０７ｋＵ／Ｌ和１６１ｋＵ／Ｌ±１１３ｋＵ／Ｌ．显著高于正常对照组及消化道良性病变组（分别为５６ｋＵ／Ｌ±４４ｋＵ／Ｌ和５６ｋＵ／Ｌ±２１ｋＵ／Ｌ，Ｐ＜００１）．消化道肿瘤有腹腔及远处转移者，其血清ＣＡ５０含量升高更为明显．结论ＣＡ５０是较好的肿瘤标记物，有助于诊断消化道肿瘤．     

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.     

胃癌诊断中肿瘤标志物CEA、CA19-9、CA125的水平变化及临床意义

目的探讨检测肿瘤标志物CEA、CA19-9、CA125在胃癌诊断中的意义。方法选取2011年2月至2013年2月于该院诊治的胃癌患者100例,所有患者均经胃镜检查以及病理切片检查证实,同时选取80例胃部良性病变患者以及80例正常健康人作为对照组。应用RIA、ELISA以及免疫组化方法检测血清以及组织中CEA、CA19-9、CA125的含量,分析三个指标单独检测以及联合检测对胃癌的诊断价值以及与临床参数之间的关系。结果胃癌患者血清及组织中的CEA、CA19-9、CA125含量显著高于对照组;三者联合检测,敏感度可提高至83%。血清中CEA、CA19-9以及CA125的浓度与胃癌的浸润深度、淋巴结转移相关;CEA浓度对胃癌的淋巴结转移的预测准确率较CA19-9、CA125更高(P<0.05)。结论胃癌患者血清以及组织中CEA、CA19-9、CA125的表达对诊断胃癌有着重要的意义;联合检测三项指标可以有效提高诊断的敏感性和特异性;血清中CEA、CA19-9、CA125的浓度与胃癌的多项临床参数有相关性。     

食管癌患者围术期监测血清CEA、CA125、CA19-9和βHCG的临床意义

目的 探讨监测血清癌胚抗原(CEA)、糖类抗原125(CA125)、糖类抗原19-9(CA19-9)、β-人绒毛膜促性腺激素(βHCG)手术前后水平动态变化在食管癌患者治疗中的应用价值.方法 用化学发光免疫法测定50例食管癌患者血清CEA、CA125、CA19-9、βHCG术前、术后1 w、1、3个月水平,并设10例健康体检者为对照组.结果 食管癌患者CEA、CA125、CA19-9术前血清水平显著高于健康对照组(均P＜0.01),βHCG术前血清水平和正常组无显著性差异(P＞0.05);食管癌患者CEA、CA125、CA19-9术后1 w、术后1、3个月血清水平显著低于术前(均P＜0.05),βHCG术后1 w、术后1、3个月血清水平和术前血清的水平无显著性差异(P＞0.05);食管癌患者CEA、CA125、CA19-9术后1个月、术后3个月水平和正常组无显著性差异(P＞0.05);食管癌患者CEA、CA125、CA19-9术前血清水平和肿瘤临床分期呈正相关(P＜0.05);食管癌患者CEA、CA125、CA19-9术前血清阳性率水平和肿瘤分化程度无统计学意义(P＞0.05).结论 食管癌患者术前术后CEA、CA125、CA19-9血清动态水平变化监测可作为手术疗效监测指标用于临床.CEA、CA125、CA19-9术前血清水平和临床分期正相关;CEA、CA125、CA19-9术前血清阳性率水平与分化程度无相关.     

5-羟色胺在大鼠海马CA1、CA2、CA3脑区的分布与表达

目的通过观察5-羟色胺(5-HT)在海马神经环路的分布和表达,为研究5-HT参与学习记忆的作用机制提供形态学依据。方法采用免疫组织化学技术观测抗5-HT的抗体阳性神经元在海马CA1、CA2和CA3区的分布特征。结果①抗5-HT的抗体在海马CA1、CA2和CA3的细胞中广泛分布。②海马中分子层阳性细胞数较少,排列不规则。锥体层细胞从内到外排列整齐,密集成带,染色强烈。多形层细胞染色细胞散在分布。③空白对照切片未见抗5-HT抗体的阳性神经元胞体。结论 5-HT在大鼠海马分布广泛,可能参与了海马学习记忆有关的过程。     

Diagnostic value of serum CA242, CA 19-9, CA 15-3 and CA 125 in patients with carcinoma of the gallbladder.

BACKGROUND: Tumor markers have an increasing significance in the diagnosis and evaluation of tumor, but their role in gallbladder cancer has not been established. The present study was undertaken to determine the utility of serological markers in carcinoma of the gallbladder (CaGB). METHODS: This study was carried out in 55 cases and 8 healthy controls presenting to a single surgical unit of the University Hospital, Varanasi, India. CA242, CA19-9, CA15-3 and CA125 were assayed preoperatively in serum of patients with carcinoma of the gallbladder (39), cholelithiasis (16) and healthy controls (8) using ELISA technique. RESULTS: Mean concentration of all tumor markers was significantly raised in carcinoma of the gallbladder when compared with cholelithiasis. CA 242 was 12.10 vs 42.19 u/ ml, CA19-9 was 211.27 vs 86.06 uml, CA 15-3 was 71.42 vs 1.93u/ml and CA125 was 253.61 vs 65.5 u/ml <0.05). Sensitivity and specificity were calculated at various cut off points. Significant changes in CAl9-9 and CA242 occurred with advanced stage (p <0.05) and grade of tumor (p<0.00 1). When two tumor markers were combined, like CA242 and CA125, sensitivity and specificity improved to 87.5% and 85.7% respectively. Diagnostic accuracy is highest with a combination of CA 19-9 and CA 125 (80.65%). However, combination of tumor markers did not improve any further sensitivity or specificity of markers. CONCLUSION: Assay of CA242, CA15-3, CA19-9 and CA 125 are fairly good markers for discriminating patients of carcinoma of the gallbladder from cholelithiasis. CA242 and CA125 when used together achieved best sensitivity and specificity. Serum markers seem to be less sensitive when used individually in carcinoma of the gallbladder but may prove useful in combination.     

胃癌患者血清CA199、CA724、CA242联合检测及其临床意义

目的 探讨血清肿瘤相关抗原CA199、CA724和CA242水平与胃癌的关系.方法 采用放射免疫法分别对63例胃癌患者血清CA199、CA724和CA242水平进行检测,并与30例慢性萎缩性胃炎伴重度不典型增生(CAGD)、30例正常对照组比较,分析其与胃癌恶性程度、转移和临床分期的关系.结果 胃癌患者血清CA199、CA724和CA242水平均明显高于CAGD与正常对照组(P均<0.01),血清CA199、CA724和CA242的阳性率与胃癌恶性程度、转移和临床分期有关(P<0.05),三项指标联合检测可明显提高胃癌诊断的敏感度及准确性.结论 胃癌患者血清CA199、CA724和CA242水平是胃癌发生、发展的重要因素,三者联合检测对胃癌患者诊断、治疗和预后判断等具有重要意义.     

Topographic specificity of functional connections from hippocampal CA3 to CA1

The hippocampus is a cortical region thought to play an important role in learning and memory. Most of our knowledge about the detailed organization of hippocampal circuitry responsible for these functions is derived from anatomical studies. These studies present an incomplete picture, however, because the functional character and importance of connections are often not revealed by anatomy. Here, we used a physiological method (photostimulation with caged glutamate) to probe the fine pattern of functional connectivity between the CA3 and CA1 subfields in the mouse hippocampal slice preparation. We recorded intracellularly from CA1 and CA3 pyramidal neurons while scanning with photostimulation across the entire CA3 subfield with high spatial resolution. Our results show that, at a given septotemporal level, nearby CA1 neurons receive synaptic inputs from neighboring CA3 neurons. Thus, the CA3 to CA1 mapping preserves neighbor relations.     

Intralobar pulmonary sequestration presenting increased serum CA19-9 and CA125

A 39-year-old man was admitted to our hospital for further evaluation of a consolidated shadow and clarification of the cause of serum tumor marker elevation (CA19-9 496.2 U/ml, CA125 160.6 U/ml). Chest computed tomography revealed a well-defined homogeneous nodule in the left S(10). Angiography showed one aberrant artery, branching from the ascending aorta. Intralobar pulmonary sequestration was diagnosed and the sequestrated lung was resected. Microscopic findings of the sequestrated lung showed a mucus-containing cystically dilated bronchus, which was covered with ciliated cylindrical epithelium. Immunohistochemical staining showed positive staining for CA19-9 and CA125 in both the ciliated cylindrical epithelium and mucus. Serum values of tumor markers returned to their normal range after surgery.     

Tumour markers CA 19-9 and CA 50 in digestive tract malignancies.

CA 19-9 and CA 50 are tumour marker tests measuring the same carbohydrate structure, sialosyl-fucosyl-lactotetraose--that is, the sialylated Lewis blood group antigen. In addition, the C50 antibody reacts with sialosyl-lactotetraose, which may be expressed in small amounts in some carcinomas. In this study we compared these tests in sera from patients with benign and malignant digestive tract diseases. The sensitivity of the markers for different cancers was also compared at several specificity levels with patients with benign diseases as reference groups. Both markers showed a high sensitivity for pancreatic cancer (77% for CA 19-9; 69% for CA 50) and biliary cancer (88%). The figures in colorectal cancer were almost as high as those reported for CEA; 16-21% elevated values in Dukes A and B tumours and 44-47% in Dukes C and D tumours. The sensitivity for gastric cancer was 48% for both markers. CA 50 had a higher sensitivity for liver cancer (55%) than CA 19-9 (9%), but the proportion of elevated values in benign liver diseases was also higher (33% versus 15%, respectively). Overall, there was good correlation between the CA 19-9 and CA 50 levels, and the difference in sensitivity and specificity was marginal. In clinical practice the greatest value of CA 19-9 and CA 50 is in the diagnosis of pancreatic cancer.     

Gamma oscillations dynamically couple hippocampal CA3 and CA1 regions during memory task performance

The hippocampal formation is believed to be critical for the encoding, consolidation, and retrieval of episodic memories. Yet, how these processes are supported by the anatomically diverse hippocampal networks is still unknown. To examine this issue, we tested rats in a hippocampus-dependent delayed spatial alternation task on a modified T maze while simultaneously recording local field potentials from dendritic and somatic layers of the dentate gyrus, CA3, and CA1 regions by using high-density, 96-site silicon probes. Both the power and coherence of gamma oscillations exhibited layer-specific changes during task performance. Peak increases in the gamma power and coherence were found in the CA3-CA1 interface on the maze segment approaching the T junction, independent of motor aspects of task performance. These results show that hippocampal networks can be dynamically coupled by gamma oscillations according to specific behavioral demands. Based on these findings, we propose that gamma oscillations may serve as a physiological mechanism by which CA3 output can coordinate CA1 activity to support retrieval of hippocampus-dependent memories.     

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.