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非小细胞肺癌的快速术前放疗对肿瘤细胞周期及病理变化影响的研究

Effect of rapid preoperative radiotherapy on tumor cell cycle and pathological changes in patients with non-small cell lung cancer
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摘要 目的探讨快速术前放疗(加速超分割术前放疗)对肿瘤细胞周期及病理变化的影响和在术前新辅助治疗中的地位和作用,寻找非小细胞肺癌术前放射治疗的新途径.方法 65例初治的Ⅰ期、Ⅱ期和估计可行手术切除的Ⅲ期非小细胞肺癌患者,分为快速术前放疗组(R+S组,24例)和单纯手术组(S组,41例).快速术前放疗组采用4MV或6MV-X线直线加速器,前后对穿照射,2.5Gy/次,2次/d,总量25Gy/10次/5~7 d,放疗后2周内手术;单纯手术组直接手术治疗.结果单纯手术组根治性切除率为78.0%(32/41),快速术前放疗组根治性切除率为83.3%(20/24),两组相近.术前放疗组中即期疗效达部分缓解(PR)者17例,其中鳞癌14例、腺癌2例、大细胞未分化癌1例;达病情稳定NC者7例,其中鳞癌4例、腺癌3例;即期疗效无完全缓解(CR)或病情进展(PD)者.细胞周期分析,G1期细胞比例、S期细胞比例分别是:术前放疗组74.5±5.4和12.3±3.9,单纯手术组68.5±5.2和16.5±3.2,术前放疗组S期细胞比例较单纯手术组有所下降,但无统计学差异(P>0.05).结论快速术前放疗25Gy/10次/5~7 d,有放射生物学基础,取得一定即期疗效,无严重急性放疗毒副作用发生,未增加手术并发症,快速术前放疗能增加Ⅲ期NSCLC的手术切除率,但有待增加病例数进一步研究;快速术前放疗能从基因水平诱导细胞周期改变.
出处 《河北医药》 CAS 2005年第10期743-744,共2页 Hebei Medical Journal
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