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Aβ蛋白淀粉样变成分在正常人血小板膜的表达

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摘要 目的探讨正常人血小板中是否存在Aβ蛋白淀粉样变成分。方法筛选正常人群340例,采用Sysmex-200型血细胞分析仪测定血液血小板数量(PLT)、血小板分布宽度(PDW)、平均血小板体积(MPV)、血小板比容(PCT)和大型血小板比例(P-LCRs),进一步提纯血小板,将血小板分成两部分,一部分用于提取血小板膜蛋白,另一部分用硫磺素T(Th T)荧光探针检测血小板膜上淀粉样变。抗Aβ抗体检测淀粉样变前多肽的免疫反应。Western印迹观察Aβ蛋白分子聚合。结果 Th T荧光探针检测血小板几乎全部显示阳性反应。进一步抗Aβ免疫组织化学实验发现绿色荧光与Aβ抗体反应阳性部位重叠。SDS-PAGE分析血小板提取的蛋白成分含有大分子Aβ聚合物。结论正常人血小板中存在Aβ淀粉样变成分,可能参与AD患者淀粉样变的发生。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2016年第14期3524-3525,共2页 Chinese Journal of Gerontology
基金 国家自然科学基金(30973157)
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