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Longitudinal brain atrophy and CSF biomarkers in early-onset Alzheimer’s disease
NeuroImage: Clinical ( IF 3.4 ) Pub Date : 2021-08-25 , DOI: 10.1016/j.nicl.2021.102804
José Contador 1 , Agnès Pérez-Millán 1 , Adrià Tort-Merino 1 , Mircea Balasa 2 , Neus Falgàs 3 , Jaume Olives 1 , Magdalena Castellví 1 , Sergi Borrego-Écija 1 , Beatriz Bosch 1 , Guadalupe Fernández-Villullas 1 , Oscar Ramos-Campoy 1 , Anna Antonell 1 , Nuria Bargalló 4 , Raquel Sanchez-Valle 5 , Roser Sala-Llonch 6 , Albert Lladó 5 ,
Affiliation  

There is evidence longitudinal atrophy in posterior brain areas in early-onset Alzheimer’s disease (EOAD; aged < 65 years), but no studies have been conducted in an EOAD cohort with fluid biomarkers characterization. We used 3T-MRI and Freesurfer 6.0 to investigate cortical and subcortical gray matter loss at two years in 12 EOAD patients (A + T + N + ) compared to 19 controls (A-T-N-) from the Hospital Clínic Barcelona cohort. We explored group differences in atrophy patterns and we correlated atrophy and baseline CSF-biomarkers levels in EOAD. We replicated the correlation analyses in 14 EOAD (A + T + N + ) and 55 late-onset AD (LOAD; aged ≥ 75 years; A + T + N + ) participants from the Alzheimer's disease Neuroimaging Initiative. We found that EOAD longitudinal atrophy spread with a posterior-to-anterior gradient and beyond hippocampus/amygdala. In EOAD, higher initial CSF NfL levels correlated with higher ventricular volumes at baseline. On the other hand, higher initial CSF Aβ42 levels (within pathological range) predicted higher rates of cortical loss in EOAD. In EOAD and LOAD subjects, higher CSF t-tau values at baseline predicted higher rates of subcortical atrophy. CSF p-tau did not show any significant correlation. In conclusion, posterior cortices, hippocampus and amygdala capture EOAD atrophy from early stages. CSF Aβ42 might predict cortical thinning and t-tau/NfL subcortical atrophy.



中文翻译:

早发性阿尔茨海默病的纵向脑萎缩和脑脊液生物标志物

有证据表明早发性阿尔茨海默病(EOAD;年龄 < 65 岁)的后脑区域存在纵向萎缩,但尚未在具有流体生物标志物特征的 EOAD 队列中进行研究。我们使用 3T-MRI 和 Freesurfer 6.0 调查了 12 名 EOAD 患者 (A + T + N + ) 与来自 Hospital Clínic Barcelona 队列的 19 名对照 (ATN-) 在两年内的皮质和皮质下灰质损失。我们探讨了萎缩模式的组间差异,并将 EOAD 中的萎缩与基线 CSF 生物标志物水平相关联。我们在来自阿尔茨海默病神经影像学倡议的 14 名 EOAD (A + T + N + ) 和 55 名迟发性 AD (LOAD;年龄≥ 75 岁;A + T + N + ) 参与者中重复了相关性分析。我们发现 EOAD 纵向萎缩以从后到前的梯度扩散并超出海马/杏仁核。在 EOAD 中,较高的初始 CSF NfL 水平与基线时较高的心室容积相关。另一方面,较高的初始 CSF Aβ42 水平(在病理范围内)预示着 EOAD 中较高的皮质丢失率。在 EOAD 和 LOAD 受试者中,基线时较高的 CSF t-tau 值预示着较高的皮质下萎缩率。CSF p-tau 未显示任何显着相关性。总之,后皮质、海马体和杏仁核从早期阶段捕捉到 EOAD 萎缩。CSF Aβ42 可能预测皮质变薄和 t-tau/NfL 皮质下萎缩。较高的初始 CSF Aβ42 水平(在病理范围内)预测 EOAD 中较高的皮质损失率。在 EOAD 和 LOAD 受试者中,基线时较高的 CSF t-tau 值预示着较高的皮质下萎缩率。CSF p-tau 未显示任何显着相关性。总之,后皮质、海马体和杏仁核从早期阶段捕捉到 EOAD 萎缩。CSF Aβ42 可能预测皮质变薄和 t-tau/NfL 皮质下萎缩。较高的初始 CSF Aβ42 水平(在病理范围内)预测 EOAD 中较高的皮质损失率。在 EOAD 和 LOAD 受试者中,基线时较高的 CSF t-tau 值预示着较高的皮质下萎缩率。CSF p-tau 未显示任何显着相关性。总之,后皮质、海马体和杏仁核从早期阶段捕捉到 EOAD 萎缩。CSF Aβ42 可能预测皮质变薄和 t-tau/NfL 皮质下萎缩。

更新日期:2021-08-30
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