Cerebrospinal fluid N-224 tau helps discriminate Alzheimer's disease from subjective cognitive decline and other dementias

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Cicognola, ClaudiaLund University,Lunds universitet,Klinisk minnesforskning,Forskargrupper vid Lunds universitet,Clinical Memory Research,Lund University Research Groups,Skåne University Hospital (author)

Cerebrospinal fluid N-224 tau helps discriminate Alzheimer's disease from subjective cognitive decline and other dementias

Article/chapterEnglish2021

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2021-02-08
Springer Science and Business Media LLC,2021

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LIBRIS-ID:oai:gup.ub.gu.se/302672
https://gup.ub.gu.se/publication/302672URI
https://doi.org/10.1186/s13195-020-00756-6DOI
https://lup.lub.lu.se/record/dd8d5f9c-7417-4e96-9fdc-44a734362fbaURI

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Language:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Background Elevated cerebrospinal fluid (CSF) concentrations of total tau (T-tau) and phosphorylated tau at Thr181 (P-tau181) protein are typical of Alzheimer's disease (AD). However, the T-tau assay measures only the mid-region of the protein, while tau in CSF is instead composed of a series of fragments. One fragment species in particular, N-224, shows increased levels in AD compared to controls. In this multicentre study, we performed a clinical validation of the N-224 assay in cohorts including patients with subjective cognitive decline (SCD), mild cognitive impairment (MCI), AD, non-AD dementias and controls. Methods Cohorts consisted of 30 SCD and 30 probable AD from the Amsterdam Dementia Cohort (cohort 1) and 539 controls, 195 SCD, 232 MCI, 137 AD and 253 non-AD from the Swedish BioFINDER study (cohort 2). All samples had AD core biomarkers (A beta 42, T-tau, P-tau181) measurements. N-224 was measured with an in-house ultrasensitive Simoa assay. Results N-224 levels were significantly higher in AD compared to SCD (cohort 1: p = 0.003) and in AD compared to all other diagnostic groups in cohort 2 (control, SCD, MCI and non-AD, p < 0.0001). Within the non-AD group, N-224 showed significantly lower concentrations compared to AD in Parkinson's disease (PD, p < 0.0001), Parkinson's disease dementia (PDD, p = 0.004), progressive supranuclear palsy (PSP, < 0.0001), multiple system atrophy (MSA, p = 0.002) and parkinsonisms not otherwise specified (NOS, p = 0.007). In cohort 1, higher concentrations of N-224 were associated to lower Mini-Mental State Examination (MMSE) scores (R-2 = 0.318, beta = 0.564, p <= 0.0001) and could accurately identify a pathological (< 24) MMSE score (p < 0.0001, AUC = 0.824). Conclusions N-224 tau can distinguish AD subjects from SCD and can discriminate subgroups of non-AD dementias from AD. Therefore, N-224 may be a useful addition to the tau biomarker toolbox for the study of tau species in CSF and for better understanding disease pathogenesis.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Neurovetenskaper hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Neurosciences hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Neurologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Neurology hsv//eng
Tau
Biomarkers
Alzheimer’
s disease
Subjective cognitive
decline
Parkinsonisms
Neurosciences & Neurology
Alzheimer’s disease
Subjective cognitive decline

Added entries (persons, corporate bodies, meetings, titles ...)

Hansson, OskarLund University,Lunds universitet,Klinisk minnesforskning,Forskargrupper vid Lunds universitet,Clinical Memory Research,Lund University Research Groups,Skåne University Hospital(Swepub:lu)mphy-ohn (author)
Scheltens, P.Amsterdam UMC - Vrije Universiteit Amsterdam,Vrije Universiteit Amsterdam (author)
Kvartsberg, Hlin,1987University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry,Sahlgrenska University Hospital(Swepub:gu)xjohhl (author)
Zetterberg, Henrik,1973University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry,University College London,Sahlgrenska University Hospital(Swepub:lu)med-hiz (author)
Teunissen, C. E.Vrije Universiteit Amsterdam,Amsterdam UMC - Vrije Universiteit Amsterdam (author)
Blennow, Kaj,1958University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry,Sahlgrenska University Hospital(Swepub:lu)med-kbw (author)
Klinisk minnesforskningForskargrupper vid Lunds universitet (creator_code:org_t)

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