BRAIN:脑TSPO-PET预测多发性硬化症的复发

2020-12-31 MedSci原创 MedSci原创

小胶质细胞过度激活与大多数神经退行性疾病有关。在这项研究中,我们检查了PET可测量的先天免疫细胞激活是否预测多发性硬化症的进展。

小胶质细胞过度激活与大多数神经退行性疾病有关。在这项研究中,我们检查了PET可测量的先天免疫细胞激活是否预测多发性硬化症的进展。使用18 kDa易位蛋白(TSPO)结合的放射性配体11C-PK11195和PET成像对69例多发性硬化症患者以及18个年龄和性别匹配的健康对照者进行了小胶质细胞/巨噬细胞的活化测定。放射配体结合被评估为动态PET图像的分布体积比。使用扩展的残疾状态量表对基线和4.1年±1.9年(平均±标准差)的患者进行常规MRI和残疾测量。随访期间有51名患者(74%)没有复发。与健康对照组相比,患者在正常出现的白质和丘脑中固有免疫细胞的激活增加(分别为Wilcoxon,P = 0.033和P = 0.003)。前向型逐步逻辑回归用于评估预测疾病进展的最佳变量。当评估整个多发性硬化症队列时,正常出现的白质中的基线先天免疫细胞激活是后期进展的重要预测指标[比值比(OR)= 4.26; P=0.048]。在无复发的患者亚组中,在病灶周围正常出现的白质中的巨噬细胞/小胶质细胞活化与疾病进展之间存在关联(OR = 4.57; P = 0.013)。在基线测量的常规MRI参数均未与随后的进展相关。研究结果有力地表明,先天免疫细胞活化导致弥漫性神经损伤,从而导致多发性硬化症疾病的进展与复发无关。

原文出处:

Marcus Sucksdorff, Markus Matilainen, Jouni Tuisku, BRAIN TSPO-PET predicts later disease progression independent of relapses in multiple sclerosis.

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