放疗是头颈肿瘤的3种传统治疗方法之一,其他方法包括外科手术和化疗。其中大约有60%的头颈肿瘤患者需要放疗,大量数据显示,放疗的细胞毒作用靶点是DNA,放疗后双链的打断被认为是最重要的损伤。当然,放疗也能导致细胞水平的紊乱,如发生凋亡,生长因子、信号传导途径及细胞周期的? Radiotherapy is one of three traditional treatments for head and neck cancer. Other methods include surgery and chemotherapy. Approximately 60% of patients with head and neck cancer require radiotherapy, a large number of data show that the target of radiation cytotoxicity is DNA, double-stranded radiotherapy is considered to be the most important injury. Of course, radiotherapy can also lead to cellular levels of disorders such as apoptosis, growth factors, signaling pathways and cell cycle?