不同浓度顺铂对肺癌A549细胞凋亡相关蛋白Bcl-2与Bax表达的影响

通过观察不同浓度顺铂作用下肺腺癌A549细胞凋亡相关蛋白Bcl-2和Bax表达及表达比例的变化,探讨Bcl-2和Bax与铂类药物敏感性的关系。研究采用CCK8检测顺铂作用下A549细胞的半数抑制浓度IC50值,确定顺铂用药范围。实时定量PCR、Western blotting法检测不同浓度顺铂作用下肺腺癌A549细胞中抗凋亡因子Bcl-2、促凋亡因子Bax的mRNA及蛋白表达情况,以及两者表达比例的变化。结果随着顺铂浓度的不断升高,Bcl-2及Bax的表达均增加,而抗凋亡因子Bcl-2升高的趋势更为明显,Bcl-2/Bax表达比例增加。提示随着顺铂浓度的提高,抗凋亡蛋白Bcl-2表达比例逐渐增加,可能会部分降低铂类促肿瘤细胞凋亡的作用,从而参与了铂类的耐药过程。     

Hp感染的胃癌组织中Eph A2和Ephrin A1的表达与远处转移的关系

采用蛋白印迹法和逆转录-聚合酶链反应法检测胃癌及正常胃黏膜组织中Eph A2、Ephrin A1和E-cadherin的蛋白及mRNA水平,分析其与临床资料的关系,初步探讨幽门螺杆菌(Hp)促进胃癌发展的机制。结果胃癌组Eph A2和Ephrin A1蛋白及mRNA水平显著高于正常胃黏膜组(P0.05),且伴Hp感染组显著高于未伴Hp感染组(P0.05);胃癌组Eph A2和Ephrin A1蛋白及mRNA水平与存在淋巴结转移呈正相关;Eph A2和Ephrin A1分别与E-cadherin蛋白表达量呈负相关。说明Hp可能通过诱导胃癌细胞合成更多的Eph A2和Ephrin A1,从而抑制E-cadherin蛋白的表达,使胃癌细胞通过淋巴系统发生转移。     

NF-κB圈套寡脱氧核苷酸联合紫杉醇对肺癌细胞增殖凋亡的影响

探讨NF-κB圈套寡脱氧核苷酸(NF-κB decoy ODN)联合紫杉醇对肺癌细胞增殖凋亡的影响。培养人肺癌细胞A549:(1)脂质体瞬时转染细胞;(2)MTT试验观察细胞生长曲线;(3)流式细胞术检测细胞凋亡率。NF-κB decoyODN使细胞生长受到抑制,NF-κBdecoy ODN联合紫杉醇使细胞凋亡增加。NF-κB decoy ODN联合紫杉醇可增强对肺癌细胞增殖的抑制及凋亡的诱导。     

NF-κB圈套寡脱氧核苷酸联合紫杉醇对肺癌细胞增殖凋亡的影响

探讨NF-κB圈套寡脱氧核苷酸(NF-κB decoy ODN)联合紫杉醇对肺癌细胞增殖凋亡的影响.培养人肺癌细胞A549:(1)脂质体瞬时转染细胞;(2)MTT试验观察细胞生长曲线;(3)流式细胞术检测细胞凋亡率.NF-κB decoy ODN使细胞生长受到抑制,NF-κB decoy ODN联合紫杉醇使细胞凋亡增加.NF-κB decoy ODN联合紫杉醇可增强对肺癌细胞增殖的抑制及凋亡的诱导.     

金属蛋白酶-9(MMP-9)及其组织抑制物-1(TIMP-1)在胰腺癌中的表达

探讨MMP-9和TIMP-1在胰腺癌癌细胞及间质的表达与胰腺癌分化程度、分期之间的关系.采用免疫组织化学方法,检测MMP-9和TIMP-1在胰腺癌细胞及间质细胞的表达.MMP-9在胰腺癌细胞和间质组织中均有表达.TlMP-1主要表达在胰腺癌细胞中.MMP-9在胰腺癌间质细胞中的表达高于胰腺癌癌旁组织间质细胞,与胰腺癌的病理分级、分期呈正相关.结论认为MMP-9在胰腺癌间质细胞的表达可能参与胰腺癌的浸润和转移,对预后判断、诊断及治疗具有一定的意义.     

金属蛋白酶-9（MMP-9）及其组织抑制物-1（TIMP-1）在胰腺癌中的表达

探讨MMP-9和TIMP—1在胰腺癌癌细胞及间质的表达与胰腺癌分化程度、分期之间的关系。采用免疫组织化学方法,检测MMP-9和TIMP—1在胰腺癌细胞及间质细胞的表达。MMP-9在胰腺癌细胞和间质组织中均有表达。TIMP—1主要表达在胰腺癌细胞中。MMP-9在胰腺癌间质细胞中的表达高于胰腺癌癌旁组织间质细胞,与胰腺癌的病理分级、分期呈正相关。结论认为MMP-9在胰腺癌间质细胞的表达可能参与胰腺癌的浸润和转移,对预后判断、诊断及治疗具有一定的意义。     

早期胃癌直径、淋巴结微转移与组织E1AF、MMP-7mRNA表达临床研究

早期胃癌内镜下切除的安全性取决于严格的术前分期、肿瘤直径及有无淋巴结转移。研究证实早期胃癌组织分型、肿瘤直径、淋巴结微转移与E1AF、MMP-7mRNA表达具有相关性,并使其具有侵袭转移的生物行为。根据临床病理特征及相关组织内E1AFmRNA、MMP-7mRNA表达选择治疗方式,以获取更好疗效。     

早期胃癌直径、淋巴结微转移与组织E1AF、MMP-7mRNA表达临床研究

早期胃癌内镜下切除的安全性取决于严格的术前分期、肿瘤直径及有无淋巴结转移.研究证实早期胃癌组织分型、肿瘤直径、淋巴结微转移与E1AF、MMP-7mRNA表达具有相关性,并使其具有侵袭转移的生物行为.根据临床病理特征及相关组织内E1AFmRNA、MMp-7mRNA表达选择治疗方式,以获取更好疗效.     

Thy-1肿瘤标记物在肝癌的表达及意义研究

探讨Thy-1（又称CD90）表达与肝癌进展的关系。采用免疫组化法检测组织中Thy-1表达,流式细胞术检测外周血CD45^-CD90^＋细胞百分数。结果Thy-1在肝癌有不同程度表达,随病理级别和临床分期增高,表达也增多。故得出结论,Thy-1与肿瘤进展关系密切,检测Thy-1表达对肝癌的预后评估有实用价值。     

Thy-1肿瘤标记物在肝癌的表达及意义研究

探讨Thy-1（又称CD90）表达与肝癌进展的关系。采用免疫组化法检测组织中Thy-1表达,流式细胞术检测外周血CD45^-CD90^＋细胞百分数。结果Thy-1在肝癌有不同程度表达,随病理级别和临床分期增高,表达也增多。故得出结论,Thy-1与肿瘤进展关系密切,检测Thy-1表达对肝癌的预后评估有实用价值。     

联合常规细胞遗传学技术、多重巢式聚合酶链反应技术检测120例急性白血病患者遗传学异常

探讨如何提高急性白血病患者染色体／特异融合基因异常的检出率与准确率。联合常规细胞遗传学技术、多重巢式聚合酶链反应技术对120例急性白血病患者进行检测。结果表明：应用常规细胞遗传学检测出82例核型异常,占68．3％,而应用多重巢式聚合酶链反应技术检测出54例融合基因异常,占45％。联合这两种技术,120例急性白血病患者的遗传学异常检出率为：75％（90／120）,其中有65例明确了具体染色体改变或特异性融合基因异常。30例患者经常规细胞遗传学检测出具有t（8;21）（q22;q22）或t（15;17）（q22;q12）,多重巢式聚合酶链反应技术检测出39例患者具有AML1／ETO、PML／RARA或CBFB／MYH11融合基因异常。当存在染色体数目异常,或者不存在19种融合基因之一时多重巢式聚合酶链反应结果为阴性。提示常规细胞遗传学技术联合多重巢式聚合酶链反应技术可以有效地提高急性白血病患者染色体异常／特异性融合基因的检出率。     

5-氨基酮戊酸光动力疗法对人卵巢癌细胞的杀伤作用及对HSP70和HIF～1α表达的影响

探讨5-氨基酮戊酸（5-aminolevulinicacid,5～ALA）光动力疗法（photodynamictherapy,PDT）对SKOV3细胞的杀伤作用及对HSP70和HIF-1α表达的影响。CCK-8法检测5～ALA—PDT对SKOV3细胞增殖的影响;荧光Real～timePCR法检测HSP70和HIF—1α...     

子宫内膜癌p72、AIB1、erbB-2的表达及其对雌激素受体活性的协同作用

为探讨p72、AIBl、erbB-2与雌激素受体（ERq）活性关系及意义,采用定量RT-PCR技术,检测不同分化程度的子宫内膜癌组织中ERa及其协同因子p72、AIBl、erbB-2的mRNA表达水平,并进行荧光素酶检测分析ERq活性与p72、AIBl、erbB-2表达的关系。结果显示,p72、AIBl和erbB-2的共同表达,促使雌激素受体的活性呈叠加增长。推测p72、AIBl与erbB-2对雌激素受体激活有相互促进作用。     

成年人某些个性特征的年龄差异研究

采用ＮＥＯ—ＦＦＩ简式对５９３名２０至９４岁成年人进行了个性特征的年龄差异研究。被试分为青年（２０～３９岁）、中年（４０～５９岁）、老年（６０～７４岁）和老老年（７５岁及以上）４组,文化程度均初中以上。结果表明：问卷表再测信度合格,自评与亲友评定间有显著相关;除开放性特征（Ｏ）随增龄下降,即青年组较年长三组更加开放外,神经质（Ｎ）、内外向（Ｅ）、和谐性（Ａ）和认真负责（Ｃ）量表分均无明显年龄差异;两性个性特点比较,女性Ｎ分及Ａ分均明显高于男性;除年龄和性别因素外,健康善对Ｎ、Ｅ、Ｃ分,文化程度对Ｎ和Ｏ分,职业对Ｅ分均有影响。     

A Method for Universal Screening of Elementary School Students: Development of the Social Challenges Screening Questionnaire

Schools regularly screen students for hearing and vision impairments because they present impediments to academic progress. For the same reason, schools should consider adding a universal screening for social challenges, which may also impede the learning process. This study reports on the development of the Social Challenges Screening Questionnaire (SCSQ), an efficient teacher-report screening questionnaire that identifies students with challenges who may benefit from a psychological evaluation. Further, the questionnaire may help identify students with Autism Spectrum Disorder who were previously undiagnosed. The SCSQ was administered to 549 general education students in the third and fourth grades. Internal consistency was.85. A smaller sample of students (n = 50) was selected for additional follow up assessment using the Social Responsiveness Questionnaire, Second Edition. Scores on the two instruments were strongly correlated (r =.87, p <.01), and sensitivity (.94) and specificity (.88) indicate the SCSQ can efficiently detect students with social challenges in need of a formal evaluation.     

Comparative validity of the Shedler and Westen Assessment Procedure-200

A predominant dimensional model of general personality structure is the five-factor model (FFM). Quite a number of alternative instruments have been developed to assess the domains of the FFM. The current study compares the validity of 2 alternative versions of the Shedler and Westen Assessment Procedure (SWAP-200) FFM scales, 1 that was developed on the basis of items identified by J. Shedler and D. Westen (2004) and 1 that used items identified by R. R. McCrae, C. E. Lokenhoff, and P. T. Costa (2005). The comparative validity of both measures was examined in a sample of persons who evidenced personality-related problems in living (N = 94). The McCrae et al. Neuroticism, Agreeableness, and Openness scales were superior to their respective Shedler and Westen scales. Both research teams developed comparably valid Extraversion and Conscientiousness scales. Implications of the results for future SWAP-200 research are discussed.     

PRL-3在宫颈鳞癌组织中的表达及临床意义

通过RT-PCR和Western blotting来检测45例宫颈鳞癌组织和20例正常宫颈组织中PRL-3的表达情况。RT-PCR和Western blotting结果均显示宫颈鳞癌组织中PRL-3的表达明显高于正常宫颈组织(P0.01),PRL-3的表达与宫颈鳞癌组织的分化程度及淋巴转移密切相关(P0.05),而与患者年龄、肿瘤直径无关(P0.05)。因此PRL-3可能参与了人类宫颈鳞癌的发生、发展,并与宫颈鳞癌的部分临床病理特征有关,将可能作为宫颈鳞癌靶向治疗的一个新的分子靶点。     

乙酰肝素酶剪接变体T5mRNA在肾癌中的表达

探讨乙酰肝素酶（Hpa）剪接变体T5mRNA在肾癌（RCC）组织中的表达,分析其与RCC发生发展及预后的关系。采用逆转录-聚合酶链反应（半定量RT—PCR）方法检测RCC组织标本及癌旁正常组织标本中T5mRNA的表达。结果RCC组织中T5mRNA阳性率高于癌旁正常组织（P〈0．05）;T5mRNA阳性表达率与RCC病理...     

Six-member stimulus classes generated by conditional-discrimination procedures

In conditional-discrimination procedures with three sets of stimuli, A, B, and C, three stimuli per set (A1A2A3, B1B2B3, and C1C2C3), subjects (children and adults) learned to select Set-B and Set-C comparisons conditionally upon Set-A samples (A1B1, A1C1, A2B2, A2C2, A3B3, A3C3). If the conditional-discrimination procedures also generated equivalence relations, three 3-member stimulus classes would be demonstrable, A1B1C1, A2B2C2, and A3B3C3. In addition to these three sets, the present experiments used three other sets of stimuli--D, E, and F. The subjects learned to select Set-E and Set-F comparisons conditionally upon Set-D samples (D1E1, D1F1, D2E2, D2F2, D3E3, D3F3). This established a second group of three 3-member stimulus classes, D1E1F1, D2E2F2, and D3E3F3. In all, two groups of three 3-member classes were established by teaching subjects 12 conditional discriminations. The two groups of 3-member classes were then combined (successfully for 5 of 8 subjects) into a single group of three 6-member classes by teaching the subjects three more conditional relations (E1C1, E2C2, and E3C3). With three other children, enlarging the classes one member at a time also produced 6-member classes. As a consequence of class formation, 60 untrained conditional relations emerged from 15 that had been explicitly taught. Six of the subjects also proved capable of naming the stimuli consistently in accord with their class membership, but two subjects demonstrated class formation even in the absence of consistent naming.