肺癌患者与健康人血清Cu、Zn、Mn、Ni、Cr、Cd 含量及 Cu/Zn、Mn/Ni比值的对比分析

本研究用原子吸收分光光度计测定了肺癌患者与健康人血清 Cu、Zn、Mn、Ni、Cr、Cd 的含量。测定结果表明,肺癌患者人群的血清 Zn、Mn 值非常显著低于健康人(P<0.001),而血清 Cu、Ni、Cr 值则非常显著高于健康人(P<0.001).血清 Cd 值显著高于健康人(P<0.05)。提示上述六种微量元素都有可能与肺癌的发生或发展有一定关系。     

食管癌组织中铜、锌、锰、镉的测定

我们测定了36例食管癌组织中微量元素 Cu、Zn、Mn、Cd。这些元素都是与 SOD 相关的微量元素。结果:癌组织中 Zn、Mn 含量减少,癌组织中 Zn 含量明显低于非癌组织(P<0.001)。而癌组织中 Cu 含量增高,Cu/Zn 比值增大,其 Cu/Zn 比值明显大于非癌组织(P<0.05)。     

乳腺肿瘤患者血清中九种微量元素的石墨炉原子吸收测定及相关分析

目的　探讨乳腺良恶性肿瘤及健康妇女血清中微量元素含量及其相关关系。方法　用石墨炉原子吸收光谱法测定 2 13名健康妇女、36例乳腺良性瘤和 38例乳腺恶性瘤手术前后血清中 Zn、Fe、Cu、Mn、Pb、Cd、Cr、Ni和 Mo九种微量元素的含量。结果　三组血清中有五种元素有显著差异 ,其中血清 Zn、Cu、Ni和 Fe的含量乳癌患者明显高于对照组 ,血清 Mo则乳癌患者低于对照组 ,而且血清 Zn、Cu、Ni随病情发展而升高 ,血清 Mo则相反。乳癌患者血清 Cu/ Zn值 (1.4g)高于健康妇女 (1.30 )。结论无论元素的含量还是元素与元素间的相关性 ,乳腺癌、乳腺良性肿瘤和健康妇女三组之间都有明显的差异     

宣威女性肺癌患者肺组织中PAHS-DNA加合物的表达

背景与目的宣威地区燃煤污染被认为是当地女性肺癌高发的主要原因。本研究旨在通过检测PAH-DNA加合物在宣威女性肺癌患者肺组织中的表达,探讨宣威地区燃煤污染产生的大量多环芳烃类物质与当地女性肺癌的关系。方法收集2007年7月-2008年11月云南省肿瘤医院经手术切除的宣威地区女性肺癌患者20例、宣威地区男性肺癌患者20例、非宣威地区女性肺癌患者20例、宣威地区女性肺良性病变患者10例、非宣威地区女性肺良性病变患者10例,肺癌患者取癌组织、癌旁组织、正常肺组织,肺良性病变患者取正常肺组织,总计患者80例,组织200份。采用免疫荧光法检测组织中PAH-DNA加合物的表达,IPP6.0软件进行图像分析及半定量测定,SPSS13.0统计软件进行统计学处理。结果PAH-DNA加合物在宣威女性肺癌患者癌组织、癌旁组织和正常肺组织中的表达阳性率(90%、80%、65%)高于宣威男性肺癌患者(35%、30%、30%)及非宣威女性肺癌患者(20%、15%、10%)(P0.01);在宣威女性肺良性病变患者(阳性率70%)肺组织中的表达也高于非宣威女性肺良性病变患者(阳性率10%);在癌组织、癌旁组织、正常肺组织中的表达有逐渐降低的趋势,但差别无统计学意义(P0.05)。结论PAH-DNA加合物在宣威女性肺组织中的表达较高,而在宣威男性、非宣威女性中表达较低。     

雌激素对去势大鼠骨骼中微量元素的影响

目的：通过去卵巢的大鼠形成的骨质疏松症模型来探讨微量元素Cu、Mn、V、F、Mo、Co、Fe、Zn、Cr、Ba、B、Sr、Pb、Cd和Mg、Ca、P等元素在骨骼中的含量变化。方法：先用11个月龄雌性SD大鼠39只，随机抽样分成3组。A组为正常对照组，假手术处理；其余大鼠均予除双侧卵巢。3个月后，将除卵巢术后生存的大鼠标记后，随机分为2组，B组为模型组，C组为尼尔雌醇治疗组。3个月后处死大鼠，用DEXA检测双侧胫骨干骺端骨密度后，将右胫骨进行微量元素检测。结果：(1)各组大鼠在左、右侧胫骨干骺端处的骨密度和骨矿含量均差异有显意义，其中模型组最低。(2)模型组(B组)大鼠与假手术组(A组)比较，大鼠骨骼中Fe、Zn、Cu、Mn、V、Sr(P＜0．01)和Mo、B、Co、Cr、F、Cd、Mg、Ca、P(P＜0．05)等的含量下降；而Ni、Ba、B、Pb等的含量变化差异无显意义。(3)雌激素治疗组(C组)中，与假手术组(A组)比较，雌激素治疗组大鼠骨骼中Ca的含量较低(P＜0．05)，而F的含量上升(P＜0．05)；而与模型组(B组)比较，Cu、Mn、V、Fe、Cd、Sr、Zn、Co(P＜0．01)和B、Cr、Mo、F、Mg、Ca、P(P＜0．05)等元素在雌激素治疗组的大鼠胫骨中的含量上升；而Pb、Ba、Ni等的含量变化差异无显意义。(4)在各个组别中，Ni、Pb、Ba的含量在骨骼中的变化差异无显意义。结论：骨骼中大部分微量元素的含量变化与体内雌激素水平密切相关，雌激素可能通过影响骨骼细胞的新陈代谢而促进了这些微量元素在骨骼中的储存，从而也影响了骨密度的变化。     

肺癌组织中KDR基因的表达及其临床意义探讨

目的：研究KDR(kinase domaimcontaining receptor)在肺癌中的表达及临床意义。方法：采用免疫组化方法(LSAB法)，检测114例肺癌组织、癌旁组织．30例肺良性病变组织中的KDR表达水平。结果：肺癌组织(86．37±10．90)中KDR表达水平显著高于肺癌旁组织(45．15±21．97)和肺良性病变组织(20．02±11．60)，P<0．01．肺癌旁组织显著高于肺良性组织，P<0．05；KDR表达水平与肺癌原发肿瘤大小、淋巴结转移状态，PTNM分期和细胞分化程度均有密切关系，P<0．01，KDR高表达组患者5年生存率(21．19％)显著低于低表达组(52．74％)，P<0．05。结论：KDR参与肺癌的发生、发展、转移．可作为评估肺癌生物学行为和预测肺癌患者预后的一项指标。     

表皮生长因子受体在肺癌组织中的表达

目的　探讨肺癌组织中表皮生长因子受体 (EGFR)的表达水平及其临床意义。方法　采用免疫组化ABC法检测 3 9例肺良性疾病、95例原发性肺癌及癌旁肺组织中EGFR的表达水平。结果　非小细胞肺癌 (NSCLC)组织EGFR表达阳性率为 87.9% ( 80 / 91) ,肺良性病变肺组织为 10 .3 % ( 4/3 9) ,4例小细胞肺癌 (SCLC)无EGFR表达。在NSCLC中 ,距癌组织 3cm以内癌旁肺组织EGFR阳性率为6 3 .7% ( 5 8/ 91) ,6cm以远正常肺组织为 12 .1% ( 11/ 91)。结论　肺癌组织EGFR表达水平显著高于良性疾病肺组织 ,检测EGFR表达有助于肺部良恶性疾患的鉴别诊断。     

微波消解-ICP-MS法测定肺癌患者体液和头发中的14种元素的含量

背景与目的 体液和组织中的微量元素的含量是多种疾病的重要监测指标,对肺癌病人体液和头发 中的微量元素进行分析,有助于肺癌的早期诊断及治疗效果评价.本研究旨在发展一种能够测定肺癌患者体液和毛 发中Cr、Fe、Mn、Al、Cd、Cu、Zn、Ni、Se、Pb、Ca、Mg、Sr、P等14种微量元素的含量的方法.方法 采用微波 消解法对取自16例肺癌患者的48份样品进行消解,利用ICP-MS方法进行元素含量测定.结果 利用GBW09101人发成 分分析标准物质对所建方法的准确性进行了考察,结果表明,测得值与标准值之间不存在统计学差异.利用所建的 方法分析了来自16例肺癌患者的48份样品,从中发现了若干规律.结论 本方法适用于肺癌患者体液和毛发中微量 元素的测定,对于肺癌的诊断和治疗具有一定的临床意义.     

肺癌组织中KDR基因的表达及其临床意义探讨

目的 :研究KDR (kinasedomain containingreceptor)在肺癌中的表达及临床意义。方法 :采用免疫组化方法 (LSAB法 ) ,检测 114例肺癌组织、癌旁组织 ,3 0例肺良性病变组织中的KDR表达水平。结果 :肺癌组织 ( 86 3 7± 10 90 )中KDR表达水平显著高于肺癌旁组织 ( 4 5 15±2 1 97)和肺良性病变组织 ( 2 0 0 2±11 60 ) ,P <0 0 1,肺癌旁组织显著高于肺良性组织 ,P <0 0 5 ;KDR表达水平与肺癌原发肿瘤大小、淋巴结转移状态 ,P TNM分期和细胞分化程度均有密切关系 ,P <0 0 1,KDR高表达组患者 5年生存率( 2 1 19% )显著低于低表达组 ( 5 2 74% ) ,P <0 0 5。结论 :KDR参与肺癌的发生、发展、转移 ,可作为评估肺癌生物学行为和预测肺癌患者预后的一项指标     

血管内皮生长因子在肺癌组织中的表达及其临床意义研究

目的 :研究血管内皮生长因子 (vas cularendotheliagrowthfactor ,VEGF)基因在肺癌中的表达及与肺癌临床病理生理特征和预后的关系。方法 :采用免疫组化方法(LSAB法 ) ,检测 114例肺癌组织、癌旁组织和 3 0例肺良性病变组织中的VEGF表达水平。结果 :1)肺癌组织中VEGF表达水平(78 70± 17 11)显著高于癌旁组织 (4 6 76±2 1 97)和肺良性病变组织 (17 70± 15 5 3 ) ,P <0 0 1;癌旁组织显著高于肺良性病变组织 ,P <0 0 5。 2 )VEGF表达水平与肺癌原发肿瘤大小、淋巴结转移状态、pTNM分期、细胞分化程度均有密切关系 ,P <0 0 1。 3 )多元回归分析发现VEGF在腺癌中表达最高 ,鳞癌次之 ,腺鳞癌最低 ,P <0 0 1。 4)肺癌组织中VEGF高表达组患者 5年生存率 (18 18% )明显低于低表达组 5年生存率 (61 19% ) ,P <0 0 1;VEGF表达水平与肺癌患者术后生存期呈显著负相关 ,P <0 0 1。结论 :肺癌组织中VEGF的表达异常参与了肺癌的发生、发展、转移 ,因此可作为评估肺癌生物学行为和预测肺癌患者预后的一项指标     

Steroid hormone receptors in lung cancer tissue

Receptors to estrogens (ER), progesterone (PR), glucocorticoids (GR) and androgens (AR) were assayed in 44 lung cancer patients to evaluate hormonal sensitivity of tumor. In 30 cases, active forms of GR were additionally measured by DNA-cellulose adsorption method. GR appeared to be most frequent (65%). Tumors contained PR and ER in 22% and 16% respectively, but failed to reveal AR. A correlation was established between stage and GR positivity, with 83 +/- 8% of GR-positive tumors observed at stage T1-3N0M0 as compared to 50 +/- 12% at stage T1-3N 1-2M0 (P less than or equal to 0.05). As few as 55% (11 out of 20) of GR-positive tumors revealed receptors capable of activation and interaction with DNA-cellulose. These tumors alone, one third of tumors studied, are likely to respond to glucocorticoid treatment.     

应用组织芯片技术研究肺癌组织中VEGF表达及其意义

目的：检测VEGF在人肺癌组织中的表达并与肺癌生物学特点及预后的关系进行研究。方法：采用回顾性队列研究，选取肺癌病例126例，运用组织芯片技术制成肺癌组织芯片，免疫组化法对标本中VEGF表达进行检测，同时对所选病例进行回访及随访。结果：126例肺癌在研究结束时仍存活40例，死亡76例，失访10例，中位生存时间34．2月。VEGF在各种组织类型中均有表达，阳性98例（77．8％）；其表达与年龄、性别、肿瘤病理分类、肿瘤M分期的P〉0．05；与肿瘤T分期及临床分期间具有相关性（P〈0．05）；COX比例风险回归模型分析示：T2、N1、N2、M1的P〈0．05。VEGF阳性表达与N分期间关系无统计学意义（P〉0．05）。结论：VEGF在人肺癌组织中有高表达，且能作为患者生存时间预测的单因素影响因子，是手术切除后肺癌病例预后较差的标志。     

Polycyclic aromatic hydrocarbon-DNA adducts in lung tissue from lung cancer patients

In an attempt to probe for polycyclic aromatic hydrocarbon (PAH)-DNA adducts in human subjects resulting from smoking (or other chronic environmental exposure), lung tissue and lung tumours were obtained from patients hospitalized for lung cancer. DNA was isolated from the tissue samples and examined both in an ELISA using a polyclonal antibody against (+/-)trans-7,8-dihydroxy-anti-9,10-epoxy-7,8,9,10- tetrahydrobenzo[a]pyrene (BPDE)-DNA as well as by the nuclease P1-mediated modification of the 32P-post-labelling technique. The ELISA results showed BPDE-DNA antigenicity in lung DNA from 6 out of 21 patients, and adduct levels ranged from 2 to 134 adducts per 10(8) nucleotides. For all 21 patients, the autoradiographs of chromatograms of 32P-postlabelled digests of DNA from non-tumorous lung tissue showed a strong diagonal radioactive zone (DRZ). This DRZ was generally absent in tumorous tissue. DNA samples that were positive in the ELISA contained a dominant spot within the DRZ that co-chromatographed with the major BPDE-DNA adduct (BPDE-dG). The quantities of the BPDE-dG spots ranged from 2.1 to 42 adducts in 10(9) nucleotides. These values were lower than the levels found in the ELISA but correlated well with the ELISA results (Kendall W = 0.97; P = 0.00). The levels of the DRZ adducts ranged from 1.9 to 34 adducts in 10(8) nucleotides. Correlations between smoking and DNA adduct levels were poor because of the small number of current smokers (n = 13). However, smokers of filter cigarettes had significantly lower DNA adduct levels compared with smokers of cigarettes without a filter (P = 0.02 by Fischer's exact test).     

Expression of BCRP gene in the normal lung tissue and lung cancer

The development of multidrug resistance during chemotherapy was found to be correlated with over-expression of two transmembrane xenobiotic transporter protein, P-glycoprotein (Pgp) and the multidrug resistance protein (MRP).[1(6] Because the discordance between drug efflux and P-glycoprotein expression in human leukemic cells and unclear drug resistance exhibited during chemotherapy in advanced breast cancer patients, a alternative multidrug resistance transporter might be existed and has b…     

TSG101在肺癌组织和细胞系中的表达及意义

背景和目的在小鼠NIH3T3成纤维细胞中通过随机纯合子敲除法证实,破坏肿瘤易感基因TSG101(Tumor Susceptibility Gene101)导致裸鼠的自发性肺转移性肿瘤,从而TSG101作为侯选的肿瘤抑制基因被认识。随后,越来越多的研究证实TSG101并非是严格意义上的肿瘤抑制基因,在原发乳腺癌并没有检测到基因内部的序列的丢失或异常,相反发现存在异常的TSG101选择性剪接体。本研究目的旨在研究肺癌细胞系和组织中TSG101的表达情况,分析TSG101及异常的TSG101选择性剪接体在肺癌的发生发展过程中可能所起的作用。方法采用免疫组织化学方法(SP法)检测79例肺鳞癌和肺腺癌组织及相应癌旁正常肺组织中TSG101的表达情况。采用RT-PCR实验分析,检测出在7种肺癌细胞系中野生型和异常剪接转录产物表达情况。采用WesternBlot方法检测肺癌细胞系中蛋白质表达情况。结果TSG101在肺鳞癌和肺腺癌中的蛋白水平显著低于其在相应正常肺组织中的表达。七种细胞系中普遍存在由于异常的选择性剪接而缩短的TSG101转录产物,和野生性转录产物同时表达。通过统计学分析发现在小细胞肺癌细胞系中存在更多的异常的转录产物。通过WesternBlot分析同样发现小细胞肺癌细胞系同样与其他非小细胞肺癌细胞系在蛋白水平上存在差异。结论尽管在非小细胞肺癌中作为侯选的肿瘤抑制因子,但是普遍存在的TSG101异常转录产物也许和肺癌的类型相关,可作为肺癌恶性进展的生物学标志。     

Distribution pattern of fibronectin in human lung cancer tissue

The distribution pattern of fibronectin in human lung cancer tissues has been studied using the indirect immunoperoxidase technique. In adenocarcinoma fibronectin is observed in the basal side of cancer cells and tumor stroma. In squamous cell carcinoma, it is seen in the basal side of cancer cells, surface of cancer cells and tumor stroma. The difference between adenocarcinoma and squamous cell carcinoma in invasion and metastasis was investigated to have some relation to the distribution pattern of fibronectin.     

Fatty acid composition of lipids in lung tissue of patients with lung cancer

The fatty acid (FA) spectrum of lung tissue fragments was studied versus distance of malignant cells from lesion focus in lung cancer patients. Decreased polyunsaturated FA levels in all samples were attributed, chiefly, to linoleic, (linoleic-new) and eicosatrienoic acid deficiency. Both in tumor tissue and areas of intensive cell proliferation, accumulation of monounsaturated C18:1 and C15:1 fatty acids, low C20:4(6 and C 20:5(3 and an FA with 19 carbon atoms were detected. The total concentration of (-6 and (-3 series fatty acids was relatively low, too, the deficit of the latter being remarkably low. Those changes are likely to be related to certain peculiarities of the structure and functions of tumor cells.     

人肺癌组织中锰超氧化物歧化酶活力的研究

Manganese-containing superoxide dismutase (Mn-SOD) activity in lung cancer tissue from 5 lung cancer patients was measured by nitrite formation method, and lipid peroxide (LPO) was measured spectrophotometrically by thiobarbituric acid reaction. The results showed that Mn-SOD activity was highest in lung cancer tissue, peripheral tissues surrounding the lung cancer stood next and it was lowest in the peripheral normal lung tissue (P less than 0.01). However, LPO value was found to be lower in lung cancer tissues than that in the peripheral normal lung tissues.     

Serum and tissue trace metal levels in lung cancer

Copper, zinc, magnesium, calcium and iron were measured in serum and lung tissue - tumor mass and histologically nonneoplastic tissue - from lung cancer patients and compared with serum concentrations in healthy subjects and control lung tissue obtained from patients with nonmalignant lung disease. Lung cancer patients showed a significant increase in serum Cu and Cu/Zn ratio levels and decrease in serum Zn and Fe concentrations. These findings were correlated with TNM stage of the disease, but not with histologic type of tumor. Malignant lung tissue showed a higher level of Cu, Ca, Mg, and Cu/Zn ratio and lower Zn level than that found in control samples, as well as an increase in Cu, Mg and Cu/Zn ratio concentrations with regard to histologically nonneoplastic tissue samples from the same patient. Tissue concentration of trace metals was not significantly influenced either by histologic type of tumor or clinical TNM stage. Significant correlation coefficients between serum and tissue trace metal levels were not found.