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Published in: Neurological Sciences 12/2021

01-12-2021 | Dementia | Original Article

Serum transthyretin and risk of cognitive decline and dementia: 22-year longitudinal study

Authors: Marzieh Araghi, Martin J. Shipley, Atul Anand, Nicholas L. Mills, Mika Kivimaki, Archana Singh-Manoux, Adam Tabák, Séverine Sabia, Eric J. Brunner

Published in: Neurological Sciences | Issue 12/2021

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Abstract

Serum transthyretin (TTR) may be an early biomarker for Alzheimer’s disease and related disorders (ADRD). We investigated associations of TTR measured at baseline with cognitive decline and incident ADRD and whether TTR trajectories differ between ADRD cases and non-cases, over 22 years before diagnosis. A total of 6024 adults aged 45–69 in 1997–1999 were followed up until 2019. TTR was assessed three times, and 297 cases of dementia were recorded. Higher TTR was associated with higher cognitive function at baseline; however, TTR was unrelated to subsequent change in cognitive function. TTR at baseline did not predict ADRD risk (hazard ratio per SD TTR (4.8 mg/dL) = 0.97; 95% confidence interval: 0.94–1.00). Among those later diagnosed with ADRD, there was a marginally steeper downward TTR trajectory than those free of ADRD over follow-up (P=0.050). Our findings suggest TTR is not neuroprotective. The relative decline in TTR level in the preclinical stage of ADRD is likely to be a consequence of disease processes.
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Metadata
Title
Serum transthyretin and risk of cognitive decline and dementia: 22-year longitudinal study
Authors
Marzieh Araghi
Martin J. Shipley
Atul Anand
Nicholas L. Mills
Mika Kivimaki
Archana Singh-Manoux
Adam Tabák
Séverine Sabia
Eric J. Brunner
Publication date
01-12-2021
Publisher
Springer International Publishing
Published in
Neurological Sciences / Issue 12/2021
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-021-05191-5

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