Cloning and characterization of proliferating cell nuclear antigen gene of Alexandrium catenella (Dinoflagellate) with respect to cell growth

Harmful algal blooms （HABs） have been affecting negatively the shellfish and aquaculture industries around the world. Though a lot of efforts have been made to disclose the changes of environmental factors involved and their effects on the HABs events, the molecular mechanism of this process remains unclear. To address this problem, proliferating cell nuclear antigen gene （pcna） was isolated and characterized from Alexandrium catenella. It showed high homology to those of other dinoflagellates （89% and 91% homology to Pfiesteria piscicid and Pyrocystis lunula, respectively）, and also 42%–43% homology to those of plant and animals. The expression level of pcna revealed by quantitative real time PCR was the lowest at the late lagging cell growth phase, increased to the highest at the late exponential phase, and then decreased at the stationary phase. Though the cell growth rate was also changing, no positive correlation between pcna expression level and cell growth rate was displayed throughout the whole cell growth stages （r 2 =0.024 6）. However, the pcna expression level had the similar trend with the change of cell growth rate throughout the whole growing process, e.g., from increasing at the earlier cell growth stage to decreasing at the following stages, though slightly lagging to the latter.

EXPRESSION OF P53 PROTEIN AND PROLIFERATING CELL NUCLEAR ANTIGEN IN HUMAN GESTATION TROPHOBLASTIC DISEASE

To study the relationship between p53 protein, proliferating cell nuclear antigen (PCNA) expression and benign or malignant gestational trophoblastic disease (MGTD). Methods: The histotomic sections of 48 patients with gestational trophoblastic disease and 24 patients of normal chorionic villi were stained using immunohistochemistry. The monoclonal antibodies were used to determine p53 protein and PCNA. Results: The frequency of p53 and PCNA positive expression were significantly different among the chorionic villi of normal pregnancy, hydratidiform mole (HM) and MGTD. But neither p53 nor PCNA has any relation with the clinical staging or metastasis of MGTD. Conclusion: Both P53 and PCNA are valuable in diagnosis of human gestational trophoblastic disease.

Abnormal expressions of proliferating cell nuclear antigen and P27 protein in brain glioma

Both proliferating cell nuclear antigen and P27 protein are important factors to regulate cell cycle. While, the combination of them can provide exactly objective markers to evaluate prognosis of patients with brain glioma needs to be further studied based on pathological level. OBJECTIVE： To observe the expressions of proliferating cell nuclear antigen and P27 protein in both injured and normal brain glioma tissues and analyze the effect of them on onset and development of brain glioma. DESIGN： Case contrast observation. SETTING： Department of Neurosurgery, the Second Affiliated Hospital of Xi＇an Jiaotong University. PARTICIPANTS： A total of 63 patients with brain glioma were selected from Department of Neurosurgery, the Second Affiliated Hospital of Xi＇an Jiaotong University from July 1996 to June 2000. There were 38 males and 25 females and their ages ranged from 23 to 71 years. Based on pathological classification and grading standards of brain glioma, patients were divided into grade I - II （n=30） and grade III- IV （n = 33）. All cases received one operation but no radiotherapy and chemiotherapy before operation. Sample tissues were collected from tumor parenchyma. Non-neoplastic brain tissues were collected from another 12 non-tumor subjects who received craniocerebral trauma infra-decompression and regarded as the control group. There were l0 males and 2 females and their ages ranged from 16 to 54 years. The experiment had got confirmed consent from local ethic committee and the collection was provided confirmed consent from patients and their relatives. All samples were restained with HE staining so as to diagnose as the brain glioma. While, all patients with brain glioma received radiotherapy after operation and their survival periods were followed up. METHODS： Primary lesion wax of brain glioma was cut into serial sections and stained with S-P immunohistochemical staining. Brown substance which was observed in tumor nucleus was regarded as the positive expressions of both proliferating cell nuclear antigen and P27 protein. Automatic imaging analytic system was used to quantitatively analyze staining results of tumor. MAIN OUTCOME MEASURES： To compare the expressions of proliferating cell nuclear antigen and P27 protein in brain glioma tissues and non-tumor brain tissues and investigate the effect of various sexes, ages, survival periods and severities on the expressions of them in brain tissues. RESULTS： There was no significant difference of sexes and ages in the expressions of proliferating cell nuclear antigen and P27 protein （P 〉 0.05）; however, the expressions of proliferating cell nuclear antigen and P27 protein were milder in non-tumor brain tissues than those in the brain glioma tissues （P 〈 0.05）. Expression of proliferating cell nuclear antigen in brain tissue of grade III- IV severity was stronger than that of grade I - II severity, and the expression in ≥ 5-year survival periods were also stronger than that in 〈 5-year survival periods （P 〈 0.05）. In addition, expression of P27 protein in brain tissue of grade III- IV severity was stronger than that of grade I - II severity, and the expression in ≥ 5-year survival periods were also stronger than that in 〈 5-year survival periods （P 〈 0.05）. CONCLUSION： Abnormal expressions of proliferating cell nuclear antigen and P27 protein in human brain glioma are closely related to onset, development and prognosis of tumor.

Construction of the Antisense Eukaryotic Vector for Proliferating Cell Nuclear Antigen Gene and Its Expression in Bladder Cancer EJ Cell Line

To explore a novel strategy for antisense gene therapy of cancer,the coding sequence of hum an proliferating cell nuclear antigen(PCNA) c DNA was reversely inserted into the eukaryotic vector p L XSN by molecular cloning techniques and transferred into bladder cancer EJcells with li- posome. The PCNA expression in transferred cells was dynamically detected by immunofluo- rescence and RT- PCR techniques. Changes of proliferation activities of cancer cells were assayed by MTT colorim etric and cloning formation m ethods.In the experiment,the antisense eukaryotic vector was successfully constructed and nam ed as p L APSN.After transfection with it for1- 7 days,PCNA protein and m RNA levels in cancer cells were blocked by16 .74 % - 84 .2 1% (P< 0 .0 5 ) and2 3.2 7% - 86 .15 % (P<0 .0 5 ) respectively.The proliferation activities of transferred cells were inhibited by 2 7.91% - 6 2 .0 7% (P<0 .0 1) ,with cloning formation abilities being de- creased by 5 0 .81% (P<0 .0 1) . Itwas concluded that the in vitro proliferation activities of cancer cells could be effectively inhibited by blocking PCNA expression with antisense technique,which could serve as an ideal strategy for gene therapy of bladder cancer.

Neuron specific enolase,p53蛋白和proliferating-cell nuclear antigen在肺癌组织中的表达及意义

目的：研究神经元特异性烯醇化酶（neuronspecificenolase，NSE）的表达，与p53蛋白和增殖细胞核抗原（prolif－erating－cellnuclearantigen，PCNA）表达的关系及意义．方法：用特异性鼠抗人单克隆抗体，按LSAB免疫组织化学方法检测石蜡包埋的肺癌标本中NSE，p53蛋白和PCNA的表达．结果：在小细胞性肺癌（SmallCellLungCancer，SCLC）中，NSE阳性表达者，PCNA标记指数（LabellingIndex，LI）高于NSE阴性者，而p53蛋白的表达与NSE的表达无关．在非小细胞性肺癌（non－smallcelllungcancr，non－SCLC）中，p53蛋白的表达和PCNALI均与NSE的表达无关．结论：在SCLC的发生及发展过程中，神经内分泌功能可能起了部分作用．而p53抑癌基因在SCLC的发生中并不起着重要的作用．

EXPRESSIONS OF P_(53), PROLIFERATING CELL NUCLEAR ANITIGEN,BCL-2 PROTEIN AND THEIR SIGNIFICANCE IN SALIVARY ADENOID CYSTIC CARCINOMA

Objective To study the effects of P53, PCNA, Bc1-2 protein and their relationship in salivary adenoid cystic carclnoma(SACC). Methods These protelns were examlned by lmmunohistochemistry. Results overexpressions of Ps, and PCNA were revealed in ACC samples, they were higher than those in (polymorphous adenomas) PA, but expression of Bc1-2 protein was not different between ACC and PA. In 3 subtypes of ACC, expressions of 3 proteins were different. Conciusion Mutations of P53, Bc1-2 may be involed in the occurrence of SACC, expression of PCNA and mutation of P53 may coexist in the development of the SACC.

Appearance of an inhibitory cell nuclear antigen in rat and human serum during variable degrees of hepatic regenerative activity

AIM To determine whether proliferating cell nuclear antigen (PCNA) is present in the peripheral circulation and whether PCNA levels correlate with enhanced regenerative activity.METHODS In animal studies, adult male Sprague-Dawley rats (n=3-4/ group) were sacrificed at 0, 12, 24, 36, 48, 72 and 96 hours following 70% partial hepatectomy. At each interval, sera were analyzed by Western blot for PCNA by two monoclonal antibodies (PC-10 and 19F-4). In human studies, sera from 4 patients with liver cirrhosis and 4 healthy controls were tested in a similar manner.RESULTS The PC-10 monoclonal antibody identified a protein with a molecular mass of 120 KD which remained stable in rat sera for 24 hours following partial hepatectomy, then increased 1.5-fold at 48 hours prior to returning to baseline at 96 hours after partial hepatectomy. However, it was not detected in the sera of patients with or without liver disease. In the 19F-4 monoclonal antibody, a protein with a molecular mass of approximately 46 KD was found. which was present in rat sera prior to partial hepatectomy and for 12 hours after surgery. Thereafter, levels fell by approximately 50% at 24 hours, 65% at 36 hours and 75% at 48 hours where they remained until 96 hours after partial hepatectomy. The decrease in levels correlated with the extent of partial hepatectomy. In human sera, the appearance of this inhibitory cell nuclear antigen (ICNA) was higher in the sera of patients with cirrhosis than in healthy controls.CONCLUSION The PC-10 monoclonal antibody can detect a protein in the circulation when active hepatic regenerative activity is taking place. The 19F-4 monoclonal antibody, however, identifies a protein in both rat and human sera that inversely correlates with hepatic regenerative activity. This protein which is tentatively referred to as inhibitory cell nuclear antigen (ICNA) may be used in documenting the extent of suppression of hepatic regeneration.

Growth inhibiting effects of antisense eukaryotic expression vector of proliferating cell nuclear antigen gene on human bladder cancer cells

Objective To explore the growth inhibiting effects on human bladder cancer by antisense RNA targeting the proliferating cell nuclear antigen (PCNA) gene. Methods The eukaryotic expression vector for antisense PCNA cDNA was constructed and transferred into a bladder cancer EJ cell line. The PCNA expression in the cancer cells was detected by RT-PCR and Western blotting assays. The in vitro proliferation activities of the transferred cells were observed by growth curve,tetrazolium bromide (MTT) colorimetry,tritiated thymidine ( 3H-TdR)incorporation, flow cytometry and clone formation testing,while its in vivo anti-tumor effects were detected on nude mice allograft models.Results After the antisense vector,pLAPSN,was transferred,cellular PCNA expression was inhibited at both protein and mRNA levels. The growth rates of EJ cells were reduced from 27.91% to 62.07% ( P <0.01),with an inhibition of DNA synthesis rate by 52.31% ( P <0.01). Transferred cells were blocked at G 0/G 1 phases in cell-cycle assay,with the clone formation ability decreased by 50.81% ( P <0.01). The in vivo carcinogenic abilities of the transferred cancer cells were decreased by 54.23% ( P <0.05). Conclusions Antisense PCNA gene transfer could inhibit the growth of bladder cancer cells in vitro and in vivo,which provided an ideal strategy for gene therapy of human cancers.

Comprehensive Diagnostic Value of P53, p21WAF1 and Proliferating Cell Nuclear Antigen for Lung Cancer

The expression of P53, p21WAF1 and proliferating cell nuclear antigen （PCNA） was detected in 114 samples of lung cancer patients （with 89 cases benign lung tissue as control） and the diagnostic value of these markers was evaluated. The results show the following： （1） The positive expression rates of P53, p21WAF1 and PCNA in samples of lung cancer were 47.37%, 75.44% and 80.70%, respectively, which were significantly higher than that in the samples of benign lung diseases （ p 〈 0. 001 ）. The odds ratios were 39.15, 5.75, and 6.76, respectively. This indicates that the expression of P53, p21WAF1 and PCNA was helpful for the diagnosis of lung cancer. （2） For the diagnosis of lung cancer, the positive likelihood ratio of P53 was 21.08, which were significantly higher than that of p21WAF 1 （2.16）, PCNA （2.11） and of all the combined tests. This shows that P53 expression was the most valuable for diagnosis of lung cancer. （3） For the diagnosis of lung cancer, the negative likelihood ratio of P53/p21WAF 1/PCNA parallel test was 0.057 1, which was lower than that of other single and combined tests. This indicates that P53/p21WAF 1/PCNA parallel test has high diagnostic value for exclusion of lung cancer.

胃癌组织中p16、p53、Rb和增殖细胞核抗原的表达与临床病理特征的关系

目的：研究胃癌中 p16、 p53、 Rb蛋白及 PCNA表达与临床病理的关系。方法：应用免疫组化 SP法对 63例胃癌组织中 p16、 p53、 Rb和 PCNA进行检测。结果： 63例胃癌组织中 p16、 p53、 Rb蛋白和 PCNA表达阳性率分别为 63.5％、 60.3％、 65.6％和 71.4％。 p16蛋白阳性表达随着肿瘤分化程度降低、恶性程度增加和浸润深度的加深， 其表达的阳性率逐渐降低，而 p53、 Rb蛋白及 PCNA的表达则相反。 p16与 p53、 Rb蛋白表达有明显负相关。结论： p16和 p53、 Rb基因蛋白和 PCNA的检测可作为判断胃癌恶性程度、预测肿瘤转移和预后的参考指标。

p53、c-erbB-2、PCNA和EGFR在膀胱癌中过表达及其意义

目的：研究癌基因和抑癌基因蛋白产物在膀胱移行细胞癌中异常表达与病理分级、临床分期、复发和预后的关系。方法：应用免疫组化Ｓ－Ｐ法检查１１７例膀胱移行细胞癌组织中ｐ５３、ｃ－ｅｒｂＢ－２、ＰＣＮＡ和ＥＧＦＲ的表达水平。结果：１１７例膀胱移行细胞癌中ｐ５３、ｃ－ｅｒｂＢ－２、ＰＣＮＡ和ＥＧＦＲ阳性表达率分别为４７．０％、２９．９％、５３．８％和４８．７％。ｐ５３和ＰＣＮＡ阳性表达产物定位于肿瘤细胞核内，ｃ－ｅｒｂＢ－２阳性表达产物定位于细胞膜上，ＥＧＦＲ阳性表达产物定位于细胞膜或细胞浆内。结果表明ｐ５３、ｃ－ｅｒｂＢ－２、ＰＣＮＡ和ＥＧＦＲ异常表达与膀胱癌的分级、分期、复发及术后生存率等之间有统计学意义。结论：ｐ５３、ｃ－ｅｒｂＢ－２、ＰＣＮＡ和ＥＧＦＲ异常表达有助于评估膀胱癌预后，多基因异常表达作为预后评价指标更有意义。

PCNA和C-erbB-2在大肠癌组织中的表达及其意义

目的 :探讨PCNA和C -erbB - 2在大肠癌发病中的作用及其与病理分级 ,临床分期及预后的关系。方法 :应用免疫组化SP法对 5 2例大肠癌组织及癌旁粘膜进行检测。结果 :PCNA和C -erbB - 2在大肠癌组织均呈高表达 (P <0 0 5 ) ;与病理分级、临床分期及预后密切相关。结论 :PCNA和C -erbB - 2在大肠癌的发生和发展过程中起重要作用 ,提示PCNA和C -erbB - 2可作为判断大肠癌预后的标记物。

COX-2、c-erbB-2、nm23-H1、PCNA表达与宫颈鳞癌预后的关系

目的 探讨环氧合酶 2 (cyclooxygenase 2 ,COX 2 )、c erbB 2、nm2 3 H 1、增殖细胞核抗原 (prolifer atingcellnuclearantigen ,PCNA)的表达与宫颈鳞癌预后的关系。 方法 应用免疫组化S P方法检测了3 0例正常宫颈和 52例宫颈鳞癌组织中COX 2、c erbB 2、nm 2 3 H1、PCNA的表达。结果 (1)COX 2、c erbB 2表达与淋巴结转移无关 (P >0 .0 5) ,而PCNA表达与淋巴结转移呈正相关 (P <0 .0 5) ,nm 2 3 H1表达与淋巴结转移呈负相关 (P <0 .0 5) ;(2 )复发患者COX 2与PCNA表达阳性率明显高于未复发的患者 (P <0 .0 5) ,而nm2 3 H 1及c erbB 2表达与复发无关 (P >0 .0 5) ;(3 )COX 2、PCNA表达与预后呈负相关 ,而nm2 3 H1表达则与预后呈正相关 ,c erbB 2表达与生存无关。多因素分析表明淋巴结转移、COX 2、nm 2 3 H1是影响宫颈鳞癌预后的独立因素。结论 COX 2、nm2 3 H 1、PCNA是影响宫颈鳞癌预后的独立因素 ;COX 2 (+ ) /nm2 3 H 1(-)高度提示预后不良 ;c erbB

胃粘膜肠化中幽门螺杆菌感染与PCNA,c-erbB-2的表达

目的研究肠化胃粘膜幽门螺杆菌（Ｈｐ）阳性率与ＰＣＮＡ，ｃｅｒｂＢ２表达率之间关系，以探讨Ｈｐ感染在胃肠化发生、发展中作用．方法经病理检查证实的慢性胃炎伴肠化１１６例，对照组非溃疡性消化不良．应用改良ＷａｒｔｈｉｎＳｔａｒｙ法检测Ｈｐ，免疫酶组化ＳＰ法检测ＰＣＮＡ，ｃｅｒｂＢ２的表达，比较Ｈｐ阳性组和阴性组间ＰＣＮＡ，ｃｅｒｂＢ２的阳性表达率．结果胃粘膜肠化者Ｈｐ感染率增高（５８６％ｖｓ１８８％，χ２＝１０７９，Ｐ＜００１），肠化胃上皮内少见Ｈｐ粘附，Ｈｐ阳性组ＰＣＮＡ，ｃｅｒｂＢ２表达高于阴性组（４８／６８ｖｓ１２／４８，χ２＝９０５，Ｐ＜００５；３６／７４ｖｓ２／４２，χ２＝１３２８，Ｐ＜００１）．结论Ｈｐ感染促进胃粘膜肠化，并使肠化胃粘膜细胞增殖迅速而启动恶性变，故Ｈｐ感染可能促进胃癌的形成．

P53、P16及Ki-67与早期食管癌患者ESD术后复发的关系分析

目的 分析研究抑制蛋白基因P53(P53)、抑制蛋白基因P16(P16)及细胞增殖核抗原Ki-67(Ki-67)与早期食管癌患者内镜黏膜下剥离术(ESD)术后复发的关系。方法 选取2019年1月至2023年1月三门峡市中心医院收治80例的早期食管癌患者作为研究对象,均进行ESD治疗。比较所有患者癌组织与癌旁组织(距肿瘤边缘>3 cm,镜下未见肿瘤组织或不典型增生组织)P53、P16、Ki-67蛋白表达。ESD术后对患者随访1年,根据有无术后复发食管癌,将患者分为复发组(n=20)与无复发组(n=60)。比较两组癌组织P53、P16、Ki-67蛋白表达。采用多因素Logistic回归分析早期食管癌患者ESD术后复发的影响因素,并绘制ROC曲线分析P53、P16、Ki-67蛋白表达与早期食管癌患者ESD术后复发。结果 与癌旁组织相比,癌组织P53、Ki-67蛋白表达升高,P16蛋白表达降低(t=9.276、13.987、10.595,均P<0.05);复发组的癌组织P53、Ki-67蛋白表达均高于无复发组,P16蛋白表达低于无复发组(t=5.086、4.648、5.139,均P<0.05);多因素Logistic回归分析显示,肿瘤低分化(OR=1.870)、肿瘤浸润侵犯黏膜下层(OR=1.808)、有淋巴结转移(OR=2.089)、P53蛋白高表达(OR=2.046)、P16蛋白低表达(OR=1.988)及Ki-67蛋白高表达(OR=1.761)均是早期食管癌患者ESD术后复发的独立危险因素(P<0.05);ROC曲线分析显示,P53、P16、Ki-67蛋白表达及联合检测的曲线下面积(AUC)分别为0.803、0.828、0.834、0.942,联合检测优于单一检测(P<0.05)。结论 P53、P16及Ki-67蛋白与早期食管癌患者ESD术后复发情况相关,可以作为辅助预测的相关诊断指标。

鼻腔鼻窦鳞状细胞癌中PCNA和C-erbB-2的表达及临床意义研究

目的探讨鼻腔鼻窦鳞状细胞癌中增殖细胞核抗原(proliferating cell nuclear antigen,PCNA)和原癌基因蛋白质(oncogene protein,C-erb B-2)的表达情况及临床意义。方法利用免疫组织化学方法检测45例鼻腔鼻窦鳞癌的PCNA和C-erb B-2的表达情况,并选择15例正常鼻腔黏膜作为正常对照。结果各级鼻腔鼻窦鳞癌之中,PCNA和C-erb B-2均有表达,与正常对照鼻腔黏膜相比,差异均有统计学意义(P<0.05),且有随鳞癌分级升高表达不断增强的趋势。但在鳞癌中的表达,PCNA和C-erb B-2不存在显著的相关性。结论 PCNA和C-erb B-2的表达均能够反映出鼻腔鼻窦鳞状细胞癌的增殖活性,且其表达强度可以反映出鳞癌细胞的增殖活性高低。

Rb基因和PCNA在前列腺癌中表达的意义及相关性分析

目的 探讨视网膜母细胞瘤易感基因 (Rb)和增殖细胞核抗原 (PCNA)在前列腺癌中表达的意义及其相互关系 .方法 采用免疫组织化学 SABC法对 36例前列腺癌标本 Rb基因和 PCNA进行检测 ,并应用图像分析仪及统计学方法对两者在不同病理分级及临床分期中的表达进行对比及相关分析 .结果 36例前列腺癌标本中 Rb表达阳性 17例 ,阳性率47.2 % ,其表达在前列腺癌的不同病理分级及临床分期之间有显著差异 (P <0 .0 5 ) ;PCNA在标本中的表达强度在不同病理分级及临床分期之间有显著差异 (P<0 .0 5 ) ;同时还发现 Rb表达与 PCNA表达存在负相关 ,即 Rb阳性标本中 PC-NA表达弱而 Rb阴性标本中 PCNA表达强 ,两者比较有显著性差异 (P<0 .0 5 ) .结论 Rb基因参与了前列腺癌的发生、发展过程 ,在发病机制中可能涉及到 Rb和 PCNA调节通路的异常 ,检测 Rb基因和 PCNA有助于前列腺癌恶性程度的判定及预后 .

p16、p53和c-erbB-2蛋白在胃癌的表达及临床意义

目的 研究抑癌基因 p16、p5 3和癌基因 c- erb B- 2在胃癌和癌前病变中的表达及其与胃癌临床病理学特征的关系 ,进一步探讨胃癌发生发展的机制。 方法 运用免疫组织化学方法检测 p16、p5 3和 c- erb B- 2蛋白在胃癌和癌前病变中的表达。 结果 p16蛋白在正常胃粘膜、肠上皮化生、异型增生和胃癌中表达呈下降趋势 ,异型增生和胃癌中 p16蛋白表达显著低于正常胃粘膜 (P<0 .0 5 ) ,p16蛋白表达降低与胃癌分化程度、浸润深度及有无淋巴结转移均无明显相关性 ;p5 3蛋白在胃癌中表达显著高于异型增生 (P<0 .0 5 ) ,并且与胃癌分化程度和淋巴结转移关系密切 (P<0 .0 5 ) ;c- erb B- 2蛋白阳性表达与胃癌浸润深度以及淋巴结转移关系密切 (P<0 .0 5 )。 结论 p16、p5 3和 c- erb B- 2在胃癌的发生发展过程中起着协同促进的作用。检测 p5 3和 c- erb B-

血清sMICA、PCNA、GASP-1、TIMP-1在非小细胞肺癌患者中的表达及相关性分析

目的探讨血清可溶性MHC-I类链相关蛋白A(sMICA)、增殖细胞核抗原(PCNA)、G蛋白偶联受体相关分选蛋白1(GASP-1)、组织金属蛋白酶抑制剂1(TIMP-1)在非小细胞肺癌(NSCLC)患者中的表达及与病理分型的相关性。方法2020年7月至2022年8月诊治的86例NSCLC患者作为研究对象,并设立为观察组,同期选取43例健康体检者设立为对照组;并根据不同病理分型将观察组分为腺癌组(n=33)和鳞癌组(n=53),对比血清sMICA、PCNA、GASP-1、TIMP-1;并采用Logistic回归模型分析sMICA、PCNA、GASP-1、TIMP-1对非小细胞肺癌的影响;采用ROC曲线模型分析sMICA、PCNA、GASP-1、TIMP-1诊断非小细胞肺癌的AUC、敏感度及特异度。结果观察组的sMICA、PCNA、GASP-1、TIMP-1均高于对照组(P<0.05)。腺癌组的sMICA、PCNA、GASP-1、TIMP-1均高于鳞癌组(P<0.05)。二元Logistic回归模型分析显示,sMICA、PCNA、GASP-1、TIMP-1高表达会对非小细胞肺癌的发生产生影响(P<0.05)。ROC曲线分析显示,sMICA、PCNA、GASP-1、TIMP-1及四项联合诊断NSCLC的AUC值分别为(0.750、0.654、0.819、0.788、0.843,P均<0.05),敏感度分别为57.00%、46.50%、67.40%、90.70%、79.10%;特异度分别为93.00%、93.00%、88.40%、58.10%、86.00%。结论sMICA、PCNA、GASP-1、TIMP-1在NSCLC患者中呈高表达趋势,其表达水平会随病理分型而升高。

胃癌组织中p53、PCNA及c-erbB-2表达与淋巴结转移的关系

目的 探讨p5 3、PCNA及c erbB 2在胃癌组织中的表达及其与淋巴结转移的关系。方法 应用免疫组织化学方法(S -P法 )检测 2 99例胃癌组织中 p5 3、增殖细胞核抗原 (PCNA )及c erbB 2的表达。 结果 p5 3、PCNA及c erbB 2在有淋巴结转移的胃癌组织中的表达率分别为 44 .8%、71.7%、71.7% ;在无淋巴结转移的胃癌组织中的表达率分别为 47.1% ,78.2 %和 47.1%。结论 p5 3、PCNA的表达与淋巴结转移无相关性 (P >0 .0 5 ) ,c erbB 2的表达与淋巴结转移密切相关 (P <0 .0 1)。c erbB 2可作为判断胃癌患者预后的 1个重要指标。