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Genetically predicted telomere length and Alzheimer's disease endophenotypes: a Mendelian randomization study

Rodriguez-Fernandez, B. (author)
Vilor-Tejedor, N. (author)
Arenaza-Urquijo, E. M. (author)
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Sanchez-Benavides, G. (author)
Suarez-Calvet, M. (author)
Operto, G. (author)
Minguillon, C. (author)
Fauria, K. (author)
Kollmorgen, G. (author)
Suridjan, I. (author)
de Moura, M. C. (author)
Pineyro, D. (author)
Esteller, M. (author)
Blennow, Kaj, 1958 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Zetterberg, Henrik, 1973 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
De Vivo, I. (author)
Molinuevo, J. L. (author)
Navarro, A. (author)
Gispert, J. D. (author)
Sala-Vila, A. (author)
Crous-Bou, M. (author)
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 (creator_code:org_t)
2022-11-07
2022
English.
In: Alzheimers Research & Therapy. - : Springer Science and Business Media LLC. - 1758-9193. ; 14:1
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Telomere length (TL) is associated with biological aging, consequently influencing the risk of age-related diseases such as Alzheimer's disease (AD). We aimed to evaluate the potential causal role of TL in AD endophenotypes (i.e., cognitive performance, N = 2233; brain age and AD-related signatures, N = 1134; and cerebrospinal fluid biomarkers (CSF) of AD and neurodegeneration, N = 304) through a Mendelian randomization (MR) analysis. Our analysis was conducted in the context of the ALFA (ALzheimer and FAmilies) study, a population of cognitively healthy individuals at risk of AD. A total of 20 single nucleotide polymorphisms associated with TL were used to determine the effect of TL on AD endophenotypes. Analyses were adjusted by age, sex, and years of education. Stratified analyses by APOE-epsilon 4 status and polygenic risk score of AD were conducted. MR analysis revealed significant associations between genetically predicted longer TL and lower levels of CSF A beta and higher levels of CSF NfL only in APOE-epsilon 4 non-carriers. Moreover, inheriting longer TL was associated with greater cortical thickness in age and AD-related brain signatures and lower levels of CSF p-tau among individuals at a high genetic predisposition to AD. Further observational analyses are warranted to better understand these associations.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Neurosciences (hsv//eng)

Keyword

Alzheimer's disease
Cerebrospinal fluid biomarkers
Mendelian
randomization
Neuroimaging
Polygenic risk score
Telomere length
false discovery rate
mini-mental state
association
dementia
population
impairment
risk
metaanalysis
imputation
version
Neurosciences & Neurology

Publication and Content Type

ref (subject category)
art (subject category)

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