鞠桂芝,苏旭,范冰,等.低剂量X射线照射诱导G1期阻滞的适应性反应[J].中华放射医学与防护杂志,1998,18(3):148-150.Ju Guizhi,Su Xu,Fan Bing,et al.Adaptive response of G1 arrest induced by low dose X-rays[J].Chin J Radiol Med Prot,1998,18(3):148-150 |
低剂量X射线照射诱导G1期阻滞的适应性反应 |
Adaptive response of G1 arrest induced by low dose X-rays |
投稿时间:1997-02-28 修订日期:1997-10-20 |
DOI: |
中文关键词: 低剂量辐射 G1期阻滞 适应性反应 |
英文关键词:Radiation G1 arrest Adaptive response |
基金项目:国家自然科学基金 |
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中文摘要: |
目的 观察低剂量X射线照射能否诱导G1期细胞阻滞。方法 采用碘化丙啶(PI)荧光探针标记细胞, 流式细胞术(FCM)检测并分析细胞周期。结果 证实1.5GyX射线全身照射后12小时, 小鼠胸腺细胞发生明显G1期阻滞。而0.075Gy低剂量预照射可明显减轻其后1.5Gy攻击剂量所致G1期阻滞。离体照射EL-4淋巴瘤细胞也得到类似结果。结论 0.075GyX射线照射能诱导胸腺淋巴细胞及EL-4细胞G1期阻滞的适应性反应。 |
英文摘要: |
Objective To investigate whether or not adaptive response of G1 arrest could be induced by low dose radiation.Methods Flow cytometry (FCM) was used to analyze cell cycle stained with propidium iodide (PI).Results It was found that 12h after 1.5 Gy whole body Xirradiation, G1 arrest of thymocytes took place in Kunming mice.However, G1 arrest was diminished when a 0.075 Gy conditioning dose was given 6h before 1.5 Gy challenge dose.The same result was also revealed in EL 4 lymphoma cell line.Conclusion Adaptive response of G1 arrest could be induced by low dose X-rays. |
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