大多功能蛋白酶7基因多态性与1型糖尿病易感性的关系

目的研究大多功能蛋白酶(LMP)7基因与1型糖尿病(DM)易感性的关系.方法采用聚合酶链反应-限制性片段长度多态性技术对71例1型DM患者及86例正常对照进行LMP7基因分型.根据发病年龄将1型DM患者分为3组,A组≤14岁,B组15～30岁,C组≥31岁.结果1型DM组LMP7-B/B频率较对照组显著降低(39%vs58%,P＜0.05),LMP7-B/A频率显著升高(54%vs31%,P＜0.01).LMP7各基因型及等位基因频率在糖尿病各发病年龄组间差异无显著性.结论LMP-B/B可能是1型DM的保护基因型,携带该基因型的人群患者1型DM危险性降低.LMP7-B/A可能是1型DM的易感基因型,携带该基因型的人群患1型DM危险性增加.LMP7基因与1型DM发病年龄可能无关.     

Multifunctional Cholinesterase and Amyloid Beta Fibrillization Modulators. Synthesis and Biological Investigation

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??Gene therapy for thalassemia is based on gene-modified autologous hematopoietic stem cell transplantation. At present??preclinical and clinical studies have proved the safety and efficacy of lentivirus vector gene therapy??but there are still many factors limiting its clinical application??such as the quantity and quality of effective stem cells??the efficiency of gene transduction??level of gene expression??and toxicity of pre-transplantation preconditioning regimen.