Lancet neurology:脑淀粉样血管病的波士顿标准2.0版新标准研究

2022-08-02 网络 网络

波士顿标准V2.0纳入了新出现的CAA的MRI标志物,在50岁及以上出现自发性脑内出血、认知障碍或短暂的局灶性神经发作的患者队列中,提高了敏感性而不影响其特殊性。

大脑淀粉样血管病(CAA)是一种与年龄有关的小血管疾病,其病理特征是淀粉样β蛋白在脑血管壁上的逐渐沉积。波士顿标准在全球范围内被用于CAA的体内诊断,但自2010年以来,在其他MRI标志物出现之前,该标准一直没有被更新。为此,近期发表在Lancet neurology杂志上的研究报告了一项国际合作研究,旨在更新并从外部验证波士顿诊断标准在CAA临床表现的全部范围。

在这项基于医院的多中心、回顾性、MRI和神经病理学诊断准确性研究中,研究人员对参加国际CAA协会的机构所掌握的临床、放射学和组织病理学数据进行了回顾性分析,以制定更新的波士顿标准并确定其在不同人群和临床表现中的诊断准确性。10个北美和欧洲的学术医疗中心确定了50岁及以上具有潜在CAA相关临床表现(即自发性脑内出血、认知障碍或短暂的局灶性神经发作)的患者,可用脑部MRI和组织病理学评估来诊断CAA。

在马萨诸塞州综合医院就诊的401名可能符合条件的患者中,有218人符合纳入分析的条件;在来自其他中心的160名患者数据中,有123人被纳入。利用推导出的队列,研究得出了可能的CAA的临时标准,要求至少存在两个严格意义上的脑叶出血性病变(即脑内出血、脑微出血或皮质浅层蛛网膜病灶)或至少一个严格意义上的脑叶出血性病变和至少一个白质特征(即半卵圆中心严重可见的血管周围间隙或多点模式的白质高信号)。这些标准的敏感性和特异性在派生队列中为74.8%和84.6%,在时间验证队列中为92.5%和89.5%。在地理验证队列中为80.2%和81.5%,在所有以尸检为诊断标准的患者中为74.5%和95.0%。在所有以尸检为诊断标准的人中,可能的CAA的波士顿标准v2.0版具有更高的准确性(敏感性64.5%.;特异性95.0%.;AUC 0.798)。

波士顿标准V2.0纳入了新出现的CAA的MRI标志物,在50岁及以上出现自发性脑内出血、认知障碍或短暂的局灶性神经发作的患者队列中,提高了敏感性而不影响其特殊性。未来的研究将需要确定v.2.0标准在所有患者和临床表现中的普遍性。

 

参考文献:

The Boston criteria version 2.0 for cerebral amyloid angiopathy: a multicentre, retrospective, MRI–neuropathology diagnostic accuracy study. https://doi.org/10.1016/S1474-4422(22)00208-3

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    2023-07-05 yinhl1978
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    2022-07-31 younei

    lancet上果然牛,感谢梅斯更新及时

    0

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硬膜下出血(SDH)在美国每年影响近125000人,其风险随着年龄增加而增加。在两个大型不同类型的队列中,CAA与SDH风险增加相关。这些发现表明,CAA可能是孤立性非创伤性SDH的一个新的危险因素。

做好这8件事,让大脑更健康!Stroke:未来脑健康研究有哪些方向?

该论文强调了对于“脑淀粉样血管病”患者的准确识别、综合预防策略的探索、基于先进神经影像学技术的脑小血管标志物的研究,以及全球范围内多方协作的重要性。

中山大学蔡蔚团队《自然·通讯》:巨噬细胞迁移小体通过激活补体破坏血脑屏障

该研究表明,CAA患者与小鼠模型的血管壁中都存在巨噬细胞来源的迁移小体沉积,且患者外周血中巨噬细胞生成迁移小体的能力与疾病影像学指标密切相关。

Stroke:脑静脉引流功能障碍可能是脑淀粉样血管病淀粉质沉积的原因之一

静脉引流功能障碍可能在CAA和脑淀粉质沉积中起作用。

肾功能好很重要:肾功能损害显著增加阿尔茨海默病和脑淀粉样血管病的风险

肾功能好很重要:肾功能损害显著增加阿尔茨海默病和脑淀粉样血管病的风险。

磁共振上出现「脑微出血」,这11种病因要考虑

脑微出血(CMBs)是脑小血管病的典型影像学表现之一,常见于高血压性动脉病和脑淀粉样血管病(CAA)患者。然而,CMBs还可以出现在一些脑小血管病的少见病因及其他疾病中。