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Cerebrospinal Fluid Biomarkers in Cerebral Amyloid Angiopathy.

Artikel i vetenskaplig tidskrift
Författare Gargi Banerjee
Gareth Ambler
Ashvini Keshavan
Ross W Paterson
Martha S Foiani
Jamie Toombs
Amanda Heslegrave
John C Dickson
Francesco Fraioli
Ashley M Groves
Michael P Lunn
Nick C Fox
Henrik Zetterberg
Jonathan M Schott
David J Werring
Publicerad i Journal of Alzheimer's disease : JAD
Volym 74
Nummer/häfte 4
Sidor 1189-1201
ISSN 1875-8908
Publiceringsår 2020
Publicerad vid Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi
Sidor 1189-1201
Språk en
Länkar dx.doi.org/10.3233/JAD-191254
www.ncbi.nlm.nih.gov/entrez/query.f...
Ämneskategorier Neurokemi

Sammanfattning

There is limited data on cerebrospinal fluid (CSF) biomarkers in sporadic amyloid-β (Aβ) cerebral amyloid angiopathy (CAA).To determine the profile of biomarkers relevant to neurodegenerative disease in the CSF of patients with CAA.We performed a detailed comparison of CSF markers, comparing patients with CAA, Alzheimer's disease (AD), and control (CS) participants, recruited from the Biomarkers and Outcomes in CAA (BOCAA) study, and a Specialist Cognitive Disorders Service.We included 10 CAA, 20 AD, and 10 CS participants (mean age 68.6, 62.5, and 62.2 years, respectively). In unadjusted analyses, CAA patients had a distinctive CSF biomarker profile, with significantly lower (p < 0.01) median concentrations of Aβ38, Aβ40, Aβ42, sAβPPα, and sAβPPβ. CAA patients had higher levels of neurofilament light (NFL) than the CS group (p < 0.01), but there were no significant differences in CSF total tau, phospho-tau, soluble TREM2 (sTREM2), or neurogranin concentrations. AD patients had higher total tau, phospho-tau and neurogranin than CS and CAA groups. In age-adjusted analyses, differences for the CAA group remained for Aβ38, Aβ40, Aβ42, and sAβPPβ. Comparing CAA patients with amyloid-PET positive (n = 5) and negative (n = 5) scans, PET positive individuals had lower (p < 0.05) concentrations of CSF Aβ42, and higher total tau, phospho-tau, NFL, and neurogranin concentrations, consistent with an "AD-like" profile.CAA has a characteristic biomarker profile, suggestive of a global, rather than selective, accumulation of amyloid species; we also provide evidence of different phenotypes according to amyloid-PET positivity. Further replication and validation of these preliminary findings in larger cohorts is needed.

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