ASCO 2014:18F-FETNIM PET/CT可无创性评估脑胶质瘤的缺氧程度

2014-05-31 悄悄 译 医学论坛网

摘要号:11100 第一作者:胡曼,山东省肿瘤医院放疗科 标题:18F-氟赤式硝基咪唑 (18F-FETNIM) PET/CT测定的缺氧程度与脑胶质瘤恶性进展的相关性研究 背景:缺氧是人脑胶质瘤的重要生物学特征。PET提供了一种无创性的方法来区分个体肿瘤生物学,并相应的修改治疗方案。PET示踪剂的发展为评估人类肿瘤的缺氧提供了更好的工具。本研究的目的是通过使用

摘要号:11100

第一作者:胡曼,山东省肿瘤医院放疗科

标题:18F-氟赤式硝基咪唑 (18F-FETNIM) PET/CT测定的缺氧程度与脑胶质瘤恶性进展的相关性研究

背景:缺氧是人脑胶质瘤的重要生物学特征。PET提供了一种无创性的方法来区分个体肿瘤生物学,并相应的修改治疗方案。PET示踪剂的发展为评估人类肿瘤的缺氧提供了更好的工具。本研究的目的是通过使用氟-18 fluoroerythronitroimidazole(18F-FETNIM)PET / CT测量是否缺氧,以及探究缺氧与胶质瘤的恶性进展的关系。

方法:15例疑似原发性脑胶质瘤并且接受外科手术的患者前瞻性纳入此项研究。所有患者术前都进行了18F-FETNIM PET/ CT检查。18F-FETNIM注射后120分钟进行PET / CT成像。对于半定量分析,最大标准摄取值(SUVmax)是通过对肿瘤组织在PET图像中绘制感兴趣区域(ROI)获得的。采用免疫组化在组织标本中评估缺氧、血管生成、侵润和细胞增殖相关的标志物缺氧诱导因子-1α(HIF-1α)、血管内皮生长因子(VEGF)、基质金属蛋白酶-9(MMP-9)和Ki-67的表达。

结果:在高度恶性胶质瘤中SUVmax、HIF-1α、VEGF、MMP-9和Ki-67的表达显著高于低度恶性胶质瘤(2.03 ± 0.49 vs.1.04±0.37, 40.63% ± 11.16% vs. 20.71% ± 12.05%, 71.88% ± 15.57% vs. 37.86% ± 13.5%, 68.13% ± 17.92% vs. 35% ± 10.8%, and 28.13% ± 18.11% vs. 3.7% ± 1.25%, respectively. p = 0.001, 0.006, 0.001, 0.001, 0.007, respectively)。此外,根据SUVmax的平均值作为划分依据,18F-FETNIM的摄取数据被划分的2组。在高18F-FETNIM摄取组和低18F-FETNIM摄取组之间,MMP-9、VEGF和Ki-67的表达具有显著差异(P=0.004,0.004,0.001,0.046)。

结论:18F-FETNIM PET / CT为脑胶质瘤缺氧提供了的无创性评估方法。这为了解缺氧影响胶质瘤的恶性进展的机制是很有用的。在临床试验中,18F-FETNIM PET / CT也许可以作为靶向肿瘤缺氧的新型治疗剂。

研究链接:Correlation of hypoxia measured by fluorine-18 fluoroerythronitroimidazole (18F-FETNIM) PET/CT and the malignant progression of gliomas.


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    2015-03-16 quxin068
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    2014-12-17 feather89
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