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青黄散治疗骨髓增生异常综合征DNA磷硫酰化探析 被引量:2

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摘要 目的:研究硫化砷制剂青黄散对骨髓增生异常综合征(Myelodysplastic Syndromes,MDS)患者DNA双链结构的影响,硫元素是否可加入DNA骨架,是否有DNA结构的硫酰化修饰。方法:以持续服用青黄散6个月以上并有血液学改善的MDS患者骨髓DNA样本10例,以琼脂糖包埋,应用脉冲场凝胶电泳(PFGE)检测骨髓细胞DNA降解表型。利用BIO-RAD CHEF-DRⅢSystem脉冲电泳进行分析。结果:经过硫修饰后DNA构象发生变化,这种硫修饰结构对电泳过程阳极积累的Tris过酸衍生物敏感而遭到位点特异性攻击,引发DNA的双链切割反应出现DNA降解现象。电泳后标本DNA结构完好,在Tris缓冲液下未出现DNA降解现象。结论:青黄散治疗有效的患者骨髓细胞DNA骨架中没有磷硫酰化修饰现象,说明青黄散疗效机制不通过硫修饰系统。
出处 《中国中医基础医学杂志》 CAS CSCD 北大核心 2015年第10期1278-1279,共2页 JOURNAL OF BASIC CHINESE MEDICINE
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