Cardiovascular brain impulses in Alzheimer's disease.

Cardiovascular brain impulses in Alzheimer's disease.
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DOI:
10.1093/brain/awab144
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发表时间:
2021-08-17
期刊:
Brain : a journal of neurology
影响因子:
--
通讯作者:
Kiviniemi V
Kiviniemi V
中科院分区:
其他
文献类型:
--
作者:
Rajna Z;Mattila H;Huotari N;Tuovinen T;Krüger J;Holst SC;Korhonen V;Remes AM;Seppänen T;Hennig J;Nedergaard M;Kiviniemi V

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Accumulation of amyloid-β is a key neuropathological feature in brain of Alzheimer’s disease patients. Alterations in cerebral haemodynamics, such as arterial impulse propagation driving the (peri)vascular CSF flux, predict future Alzheimer’s disease progression. We now present a non-invasive method to quantify the three-dimensional propagation of cardiovascular impulses in human brain using ultrafast 10 Hz magnetic resonance encephalography. This technique revealed spatio-temporal abnormalities in impulse propagation in Alzheimer’s disease. The arrival latency and propagation speed both differed in patients with Alzheimer’s disease. Our mapping of arterial territories revealed Alzheimer’s disease-specific modifications, including reversed impulse propagation around the hippocampi and in parietal cortical areas. The findings imply that pervasive abnormality in (peri)vascular CSF impulse propagation compromises vascular impulse propagation and subsequently glymphatic brain clearance of amyloid-β in Alzheimer’s disease. See Bailes and Lewis (doi:) for a scientific commentary on this article. Rajna et al. present a non-invasive quantification of cardiovascular impulse propagation within the human brain, and show differences in impulse timing, velocity, and direction in patients with Alzheimer’s disease compared to age-matched healthy volunteers.
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