细胞因子联合DVH参数预测放射性肺炎的临床研究

被引:23
作者
姬巍
王绿化
赵路军
蒋恒
王小震
张莉
欧广飞
杨伟志
冯勤富
周宗玫
机构
[1] 中国医学科学院中国协和医科大学肿瘤医院肿瘤研究所放疗科
关键词
肺肿瘤/放疗; 放射性肺炎; 细胞因子; 剂量体积直方图; 预测价值;
D O I
暂无
中图分类号
R818 [放射病、放射损伤]; R734.2 [肺肿瘤];
学科分类号
100106 [放射医学]; 100117 [系统生物医学];
摘要
目的评价肺癌胸部放疗前及照射40~50 Gy时血浆中TGF-β、IL-6及ACE含量变化、肺受照射剂量体积因素与放射性肺炎发生的关系。方法67例肺癌患者按治疗常规给予放疗或(和)化疗;男60例,女7例,中位年龄58岁(26~81岁)。放疗前、照射40~50 Gy时采血冻存,采用酶联免疫吸附法检测血液中TGF-β、IL-6及ACE含量。放射性肺炎根据CTC AE3.0标准评价,评价终点为≥2级放射性肺炎。结果存活患者中位随访时间22.6个月。2级以上的放射性肺炎发生率25.4%。自放疗开始至发生放射性肺炎的中位时间73天。放疗前、放疗40~50 Gy时血浆中TGF-β、IL-6含量以及其在放疗期间的变化与放射性肺炎无明显相关性。发生放射性肺炎组患者的疗前、疗中血浆ACE含量明显低于未发生肺炎者(P=0.033、0.004)。发生放射性肺炎组的全肺接受10 Gy照射体积(V10)为44%,高于未发生肺炎组的39%(P=0.029)。健肺MLD、V10、V15、V20分别高于未发生肺炎组(1931 cGy:990 cGy、52%:35%、48%:23%、37%:10%,P<0.05)。将生物因素ACE含量和DVH参数联合分析发现疗中血浆ACE含量和全肺V10组合是放射性肺炎最强的预测因素。疗中ACE含量ACE>506 ng/ml且全肺V10≤40%时,放射性肺炎的发生风险最低,13例中无一发生;但如果ACE≤506 ng/ml且全肺V10>40%时,放射性肺炎风险达50%(6/12);其他情况疗中ACE>506 ng/ml且V10>40%或疗中ACE≤506 ng/ml且V10≤40%时,放射性肺炎发生率26.7%(P=0.008)。结论(1)放疗前、放疗中血浆ACE含量低是放射性肺炎发生的高危因素。(2)血浆ACE联合DVH参数V10有望作为预测放射性肺炎发生的指标。
引用
收藏
页码:473 / 477
页数:5
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