【摘要】 目的观察重组人白细胞介素-11(rhIL-11)和重组人粒细胞集落刺激因子(rhG-CSF)联用对60Coγ射线照射所致急性放射病的疗效。方法16只比格狗随机分为对照组(5只)、对症治疗组(5只)和细胞因子治疗组(6只)。所有动物均接受4.5Gy60Coγ射线照射,并在照后当天开始治疗,对症治疗组仅给予积极的对症支持治疗,细胞因子治疗组在对症治疗的基础上,加用rhIL-11和rhG-CSF,对照组不给予任何治疗。观察动物的一般情况、外周血象、外周血有核细胞早期凋亡率和坏死率、血浆中细胞因子含量及组织病理学变化。结果细胞因子治疗组动物的45d存活率升高,外周血象也明显改善;外周血有核细胞早期凋亡率和坏死率明显降低;外周血血浆中IL-2和IFN-γ含量在早期均升高,随后IL-2迅速下降,IFN-γ含量相对比较稳定;骨髓组织病理学结果显示造血功能明显恢复。结论rhIL-11和rhG-CSF联用可促进急性放射病比格狗的造血和免疫功能恢复,是治疗急性放射病的有效方法。更多还原

【Abstract】 Objective To examine the therapeutic effect of combined administration of rhIL-11 and rhG-CSF on acute radiation syndrome induced by 60Coγ ray exposure in beagles. Methods Sixteen beagles were randomly divided into the control (n=5), symptomatic treatment group (n=5) and cytokine treatment group (n=6). All the beagles in the three groups were exposed to the whole-body irradiation of 60Co γ ray at a dose of 4.5 Gy. The animals in the second group accepted active symptomatic treatment. The animals in the cytokine treatment group were sub-cutaneously administered rhIL -11 and rhG -CSF besides active symptomatic treatment. Hemogram of peripheral blood, pristine apoptosis and necrosis ratio of nucleated cells, the content of IL-2 and IFN-γ in plasm and formation of bone marrow were used to evaluate the therapeutic effect. Results In the cytokine treatment group, the animal’ survival rate 45 days after exposure was increased and hemogram of peripheral blood was improved significantly. The rate of pristine apoptosis and necrosis of nucleated cell declined obviously. Early, the content of both IL-2 and IFN-γ in plasm was up significantly, then the content of IL-2 rapidly descended, but that of IFN-γ was relatively stable. Conclusion The combined administration of rhIL11 and rhG-CSF significantly improved the recovery of hematopoietic and immunological function.更多还原