在初级家族性脑化中小血管疾病与新型截断PDGFB变体
Maha Yektay Farahmand1,2, Johan Wasselius3, Elisabet Englund4
1Division of Neurology, Department for Clinical Sciences, Lund University, Lund, Sweden.
Neurologia i neurochirurgia polska
|December 29, 2023
概括
与PDGFB基因变异相关的初级家族性大脑化 (PFBC) 导致大脑化和白质超强度. 这些变体可以导致中风或TIA,表明PDGFB相关的小血管疾病影响大脑但不影响皮肤.
科学领域:
- 神经遗传学 神经遗传学
- 血管神经学 血管神经学
- 神经退行性疾病 神经退行性疾病
背景情况:
- 初级家族性脑化 (PFBC) 是一种神经退行性疾病,其特征是脑化和神经/神经精神症状.
- 白质超强度 (WMH) 在PFBC患者中观察到具有血小板衍生生长因子β多 (PDGFB) 基因变异,这表明大脑血管参与.
- 这项研究调查了PFBC,PDGFB变体和脑血管事件 (如中风和暂时性缺血性攻击 (TIA)) 之间的联系.
研究的目的:
- 描述两个具有新型截断PDGFB变体和PFBC的家族.
- 调查PFBC和血管事件 (中风/TIA) 之间的相关性.
- 为了确定血管疾病的症状是否全身性或局限于脑血管.
主要方法:
- 两个瑞典家族的临床和放射性特征与PDGFB新型变体 (p.Gln140*和p.Arg191*).
- 对受影响和未受影响的家庭成员的皮下毛细血管进行显微镜检查.
- 评估临床表现,包括神经和精神症状,以及血管事件.
主要成果:
- 所有突变携带者都表现出WMH和双边大脑化.
- 临床表现各不相同,一个家庭出现运动障碍,另一个家庭出现精神症状.
- 受影响的个体经历了中风,TIA或无症状的缺血病变,独立于传统的血管风险因素. 皮肤微血管结构仍然正常.
结论:
- 在PFBC患者中PDGFB变异导致微血管大脑变化,而不是皮肤变化.
- 与PDGFB相关的小血管疾病可以表现为脑出血或缺血.
- 这种情况可能解释了缺乏其他血管风险因素的患者的TIA或中风.
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