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Alzheimer's & Dementia:神经退行疾病的生物标志物“男女有别”

2021-03-21 haibei MedSci原创

男性的QAlb和NfL浓度较高,且从青春期开始一生都有较高的QAlb和NfL浓度。NfL与WML无关,但QAlb与WML呈正相关。

脑脊液(CSF)神经丝轻蛋白(NfL)和CSF/血清白蛋白比值(QAlb)是被广泛使用的生物标志物,有助于研究和临床上神经退行性和神经炎症性疾病的诊断和疾病监测。CSF NfL是多发性硬化症(MS)、阿尔茨海默病(AD)、中风、额颞痴呆(FTD)和克雅氏病等情况下神经元持续衰变的生物标志物,而QAlb是血脑屏障完整性的生物标志物,在多种神经退行性和炎症性疾病中发生改变。

在临床化学研究中,研究人员探索了人口统计学因素(如年龄和性别)对生物标志物水平的可能影响,并且在有需要的情况下,建立了年龄和性别特异性的参考范围,例如血红蛋白、肌酐、载脂蛋白A1和B的血浆水平。最近的一项荟萃分析发现,在健康对照组和一些神经退行性疾病中,男性的NfL浓度较高;在阿尔茨海默病神经影像学倡议(ADNI)研究的一个小数据集中也观察到了同样的现象。但是,人们没有研究这些差异与可能的血管因素的关系。关于QAlb,最近有报道称,男性在童年和整个生命中的QAlb水平高于女性。目前,QAlb和CSF NfL的参考范围通常按年龄进行调整,但没有根据性别进行调整。

最近,研究人员进一步探索了人口因素对这些生物标志物的影响。该研究的参与者来自两个瑞典样本:基于人群的H70研究(n = 308,年龄70岁)和一个临床常规队列(CSF NfL,n = 8995,QAlb,n = 39252,年龄0至95岁)。在基于人群的研究中,研究人员对QAlb和NfL与性别、心血管危险因素和脑白质病变(WMLs)的关系进行了检查。在临床队列中,研究人员测试了QAlb和NfL的性别差异与年龄的关系。

结果显示,在临床队列中,QAlb和NfL的性别差异与年龄有关男性的QAlb和NfL浓度较高,且从青春期开始一生都有较高的QAlb和NfL浓度。NfL与WML无关,但QAlb与WML呈正相关。

因此,该研究表明,CSF NfL的性别差异不能用血管病理学来解释。未来的研究应考虑对男性和女性使用不同的参考限值

 

原始出处:

Tobias Skillbäck et al. Sex differences in CSF biomarkers for neurodegeneration and blood‐brain barrier integrity. Alzheimer's & Dementia (2021). 

 

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    2021-03-21 ms7467425835754188

    为了积分

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    2021-03-21 老周医生

    看来痴呆也是男女有别的

    0

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    2021-03-21 言西早

    脑脊液(CSF)神经丝轻蛋白(NfL)和CSF/血清白蛋白比值(QAlb)是被广泛使用的生物标志物,有助于研究和临床上神经退行性和神经炎症性疾病的诊断和疾病监测。

    0

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自闭症(ASD)是发生在婴儿时期的一种特殊性精神障碍,又称婴儿孤独症。过去曾经认为,其病因可能与社会心理因素有关。然而,最近《BMC》发布的一项研究却颠覆了人们的认知。

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