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BMC Neurology
Published in: BMC Neurology 1/2017

Open Access 01-12-2017 | Research article

Association between total-Tau and brain atrophy one year after first-ever stroke

Authors: Hege Ihle-Hansen, Guri Hagberg, Brynjar Fure, Bente Thommessen, Morten W. Fagerland, Anne R. Øksengård, Knut Engedal, Per Selnes

Published in: BMC Neurology | Issue 1/2017

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Abstract

Background

Although the most serious consequence of neuronal ischemia is acute neuronal death, mounting evidence suggests similarities between stroke and neurodegenerative disease. Brain atrophy visualized on structural MRI and pathological cerebrospinal fluid (CSF) concentrations of microtubule-associated protein tau (T-tau) and phosphorylated microtubule-associated protein tau indicate neurofibrillary degeneration. We aimed to explore the association between CSF T-tau and brain atrophy 1 year post-stroke.

Methods

We included 210 patients with first-ever ischemic stroke or transitory ischemic attack without pre-existing cognitive impairment. After 12 months, subjects underwent MRI, and CSF biomarkers were assessed. Using SIENAX (part of FSL), ventricular CSF volume and total brain volume were estimated and normalized for subject head size. The association between T-tau as explanatory variable and ventricular and total brain volume as outcome variables were studied using linear regression.

Results

One hundred eighty-two patients completed the follow-up. Forty-four had a lumbar puncture. Of these, 31 had their MRI with identical scan parameters. Mean age was 70.2 years (SD 11.7). Ventricular volume on MRI was significantly associated with age, but not with gender. In the multiple regression model, there was a significant association between T-tau and both ventricular (beta 0.44, 95% CI 376.3, 394.9, p = 0.021) and global brain volume (beta −0.50, 95% CI −565.9, −78.3, p = 0.011). There was no significant association between CSF T-tau 1 year post-stroke and baseline volumes.

Conclusion

T-tau measured 1 year post-stroke is associated with measures of brain atrophy. The findings indicate that acute stroke may enhance or trigger tau-linked neurodegeneration with loss of neurons.

Trial registration

Clinicaltrials.gov NCT00506818, July 23, 2007.
Inclusion from February 2007, randomization and intervention from May 2007 and trial registration in July 2007.
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Metadata
Title
Association between total-Tau and brain atrophy one year after first-ever stroke
Authors
Hege Ihle-Hansen
Guri Hagberg
Brynjar Fure
Bente Thommessen
Morten W. Fagerland
Anne R. Øksengård
Knut Engedal
Per Selnes
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Neurology / Issue 1/2017
Electronic ISSN: 1471-2377
DOI
https://doi.org/10.1186/s12883-017-0890-6

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