Objective To evaluate the prognostic significance of carbonic anhydrase IX ( CA IX) expression in patients with clear cell renal cell carcinoma ( ccRCC) . Methods CA IX excression in a cohort of 120 patients with ccRC...Objective To evaluate the prognostic significance of carbonic anhydrase IX ( CA IX) expression in patients with clear cell renal cell carcinoma ( ccRCC) . Methods CA IX excression in a cohort of 120 patients with ccRCC was evaluated by P-V immunohistochemistry展开更多
背景与目的碳酸酐酶IX(carbonic anhydrase IX,CAIX)在肺癌等多种恶性肿瘤组织中广泛表达,前期研究证明,肺癌患者血清可溶性CAIX(soluble form of carbonic anhydrase IX,s-CAIX)含量明显高于健康者。本研究检测肺癌恶性胸腔积液中s-CAI...背景与目的碳酸酐酶IX(carbonic anhydrase IX,CAIX)在肺癌等多种恶性肿瘤组织中广泛表达,前期研究证明,肺癌患者血清可溶性CAIX(soluble form of carbonic anhydrase IX,s-CAIX)含量明显高于健康者。本研究检测肺癌恶性胸腔积液中s-CAIX含量和沉淀物中CAIX表达情况,探讨其对肺癌的诊断价值。方法运用EILSA检测29例肺癌恶性胸腔积液和27例结核性胸腔积液中s-CAIX含量。运用免疫组化法检测21例肺癌恶性胸腔积液沉淀物和6例良性胸腔积液沉淀物中CAIX表达。绘制胸腔积液s-CAIX诊断肺癌恶性胸腔积液的ROC曲线。结果肺癌恶性胸腔积液较结核性胸腔积液中s-CAIX含量明显增高(P<0.05)。胸腔积液s-CAIX诊断肺癌恶性胸腔积液的受试者工作特征(receiver operating characteristic,ROC)曲线下面积为0.761,当胸腔积液中s-CAIX阈值为109.135 pg/m L时,敏感度和特异度分别为92.3%和58.3%。良性胸腔积液沉淀物组中CAIX表达均阴性,肺癌恶性胸腔积液沉淀物中CAIX表达阳性率66.67%。结论胸腔积液及其沉淀物CAIX检测有助于肺癌恶性胸腔积液诊断,且具有较高的敏感性和特异性。展开更多
Background： Blood oxygenation level-dependent magnetic resonance imaging （BOLD-MRI） is a functional MRI technique which involves using the paramagnetic properties of deoxyhemoglobin to image the local tissue oxygen...Background： Blood oxygenation level-dependent magnetic resonance imaging （BOLD-MRI） is a functional MRI technique which involves using the paramagnetic properties of deoxyhemoglobin to image the local tissue oxygen concentration. The purpose of this study was to investigate whether BOLD-MRI could evaluate hypoxia and angiogenesis of breast invasive ductal carcinoma （IDC）. Methods： Ninety-eight female patients with IDC were retrospectively included in this research. All patients underwent breast BOLD-MRI at 3.0 T before surgery. R2＊ values of BOLD-MR1 were measured. The expression of carbonic anhydrase IX （CA IX） and vascular endothelial growth factor （VEGF） was analyzed by immunohistochemistry. Spearman＇s correlation analysis was used to correlate R2＊ value with CA IX and VEGF levels. Results： Heterogeneous intensity on BOLD-MRI images was the main finding of IDCs. The mean R2＊ value was 52.8 ± 18.6 Hz. The R2＊ values in patients with axillary lymph node metastasis were significantly higher than the R2＊ values in patients without axillary lymph node metastasis （t = 2.882, P = 0.005）. R2＊ values increased with CA IX level and positively correlated with the level of CA 1X （r = 0.616, P 〈 0.001）; however, R2＊ value had no significantly correlation with the level of VEGF （r = 0.110, P = 0.281）. Conclusion： B OLD-MRI could noninvasively evaluate chronic hypoxia of IDC, but not angiogenesis.展开更多
目的合成能够与碳酸酐酶9(carbonic anhydraseⅨ,CAⅨ)蛋白多糖区特异性结合的多肽分子(proteoglycan-like region peptide,PGLR-P1),并初步探讨其在体外的寻靶能力。方法通过化学固相合成法合成多肽分子,对其纯度和相对分子质量进行分...目的合成能够与碳酸酐酶9(carbonic anhydraseⅨ,CAⅨ)蛋白多糖区特异性结合的多肽分子(proteoglycan-like region peptide,PGLR-P1),并初步探讨其在体外的寻靶能力。方法通过化学固相合成法合成多肽分子,对其纯度和相对分子质量进行分析,并初步探讨其与CAⅨ蛋白、表达CAⅨ的肿瘤细胞和相应移植瘤组织的结合能力以及携载多肽的靶向纳米泡的体外寻靶能力。结果合成的多肽分子纯度高于98%,相对分子质量(1 722.2±0.4),其能与CAⅨ蛋白、表达CAⅨ的肿瘤细胞及相应移植瘤组织发生特异性靶向结合,且携载多肽的靶向纳米泡特异性靶向结合CAⅨ表达阳性的肿瘤细胞。结论化学合成的多肽分子PGLR-P1在分子、细胞和组织水平均能与CAⅨ蛋白发生特异性结合。展开更多
文摘Objective To evaluate the prognostic significance of carbonic anhydrase IX ( CA IX) expression in patients with clear cell renal cell carcinoma ( ccRCC) . Methods CA IX excression in a cohort of 120 patients with ccRCC was evaluated by P-V immunohistochemistry
文摘Background： Blood oxygenation level-dependent magnetic resonance imaging （BOLD-MRI） is a functional MRI technique which involves using the paramagnetic properties of deoxyhemoglobin to image the local tissue oxygen concentration. The purpose of this study was to investigate whether BOLD-MRI could evaluate hypoxia and angiogenesis of breast invasive ductal carcinoma （IDC）. Methods： Ninety-eight female patients with IDC were retrospectively included in this research. All patients underwent breast BOLD-MRI at 3.0 T before surgery. R2＊ values of BOLD-MR1 were measured. The expression of carbonic anhydrase IX （CA IX） and vascular endothelial growth factor （VEGF） was analyzed by immunohistochemistry. Spearman＇s correlation analysis was used to correlate R2＊ value with CA IX and VEGF levels. Results： Heterogeneous intensity on BOLD-MRI images was the main finding of IDCs. The mean R2＊ value was 52.8 ± 18.6 Hz. The R2＊ values in patients with axillary lymph node metastasis were significantly higher than the R2＊ values in patients without axillary lymph node metastasis （t = 2.882, P = 0.005）. R2＊ values increased with CA IX level and positively correlated with the level of CA 1X （r = 0.616, P 〈 0.001）; however, R2＊ value had no significantly correlation with the level of VEGF （r = 0.110, P = 0.281）. Conclusion： B OLD-MRI could noninvasively evaluate chronic hypoxia of IDC, but not angiogenesis.
文摘目的合成能够与碳酸酐酶9(carbonic anhydraseⅨ,CAⅨ)蛋白多糖区特异性结合的多肽分子(proteoglycan-like region peptide,PGLR-P1),并初步探讨其在体外的寻靶能力。方法通过化学固相合成法合成多肽分子,对其纯度和相对分子质量进行分析,并初步探讨其与CAⅨ蛋白、表达CAⅨ的肿瘤细胞和相应移植瘤组织的结合能力以及携载多肽的靶向纳米泡的体外寻靶能力。结果合成的多肽分子纯度高于98%,相对分子质量(1 722.2±0.4),其能与CAⅨ蛋白、表达CAⅨ的肿瘤细胞及相应移植瘤组织发生特异性靶向结合,且携载多肽的靶向纳米泡特异性靶向结合CAⅨ表达阳性的肿瘤细胞。结论化学合成的多肽分子PGLR-P1在分子、细胞和组织水平均能与CAⅨ蛋白发生特异性结合。
