为了解单、多次联合应用Iq7611与放射对肿瘤组织放射敏感性的影响,进行了本实验。单次给药与放射剂量分别为250mg/kgIq7611和1,500rad,多次给药及照射剂量则为250mg/kg×4和500rad×4。结果,单、多次联合组的肿瘤生长延迟(TGD)分别为16天和5天,均比单、多次单独照射组的11天和3天长5天及2天。表明,Iq7611不仅单次,而且多次与放疗联合应用都有一定增强肿瘤放射敏感性的作用。 The experiment was performed in order to study the effects of single and multiple combined application of Iq7611 and radiation on the radiosensitivity of tumor tissue. The single dose and radiation dose were 250 mg/kg Iq7611 and 1,500 rad, respectively, and multiple doses and irradiation doses were 250 mg/kg×4 and 500 rad×4. As a result, tumor growth delays (TGD) in the single and multiple combination groups were 16 days and 5 days, respectively, which were 5 days and 2 days longer than the 11 days and 3 days of single and multiple irradiation groups. It shows that Iq7611 not only a single time, but also combined with radiation therapy several times have a certain role in enhancing tumor radiosensitivity.