在POEMS综合征中,外周神经的小血管血小板血栓形成
Hiroki Takeuchi1, Yasumasa Yamamoto2, Junichi Miyahara3
1Department of Neurology, NHO Minami-Kyoto Hospital, Kyoto, Japan.
Muscle & nerve
|October 14, 2023
概括
小血管血小板血栓形成可能导致POEMS综合征的神经脱髓化. 这一发现表明,血小板聚合有助于这种罕见的血管疾病的发病.
科学领域:
- 神经学 神经学
- 血液学 血液学 血液学
- 病理学 病理学 病理学
背景情况:
- 血管血栓症在POEMS综合征 (多神经病变,有机巨变,内分泌病变,M蛋白,皮肤变化) 中很常见.
- 在POEMS综合征中,膜内皮细胞往往过度缩,导致血管封闭和潜在的缺氧.
- 缺氧可能会增加血管内皮生长因子 (VEGF),促进高凝血和血管透性.
研究的目的:
- 为了调查两名患有POEMS综合征的患者罕见的神经活检发现.
- 为了确定在POEMS综合征中血管封闭的具体机制.
主要方法:
- 关于两名患有POEMS综合征的50多岁患者的案例研究.
- 对神经活检的分析揭示了主要由血小板引起的血管封闭.
- 与之前的9名POEMS患者进行比较,他们的活检缺乏类似的发现.
主要成果:
- 观察到小动脉和静脉的闭塞,没有动脉样变化.
- 内皮细胞粘附于装载的血小板,失去它们的结点.
- 结果与之前检查的POEMS患者活检不同.
结论:
- 血小板聚合和脱粒可能导致内皮屏障受损.
- 这可能会导致促炎性细胞因子 (例如,白内素-12) 的泄漏.
- 小血管血小板血栓症与POEMS综合征的发病有关,可能通过增加VEGF引起神经脱髓化.
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