Evidence map›Paper›PMID 34581957›Full record

ArticleBrain imaging and behavior2022

Blood pressure variability and medial temporal atrophy in apolipoprotein ϵ4 carriers.

Isabel J Sible, Daniel A Nation, Alzheimer’s Disease Neuroimaging Initiative

Open access · hybridAbstract read
In one paragraph

Article in Brain imaging and behavior, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.1field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 28 citations in OpenAlex.

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  5. Frontiers in aging neuroscience · 2026
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  15. Beyond Hypertension: Examining Variable Blood Pressure's Role in Cognition and Brain Structure.The journals of gerontology. Series B, Psychological sciences and social sciences · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Isabel J SibleDepartment of Psychology, University of Southern California, Los Angeles, CA, 90007, USA.
Daniel A NationInstitute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, CA, 92697, USA. dnation@uci.edu.ORCID http://orcid.org/0000-0002-9123-0658
Alzheimer’s Disease Neuroimaging Initiative
University of California, Irvine · USUniversity of Southern California · US

Funding

UC Irvine Alzheimer's Disease Research Center Induced Pluripotent Stem Cell CoreP50AG016573 · NIA · UNIVERSITY OF CALIFORNIA-IRVINE · PI LAFERLA, FRANK M · 2000 to 2019
$37.0M
Vascular Contributions to Dementia and Genetic Risk Factors for Alzheimer's DiseaseP01AG052350 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ARTHUR W TOGA · 2016 to 2026
$28.4M
Endothelial progenitor cells and neurovascular injury in the aging brainR01AG064228 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Daniel A Nation · 2019 to 2026
$4.5M
Cerebrovascular resistance in cognitive aging and Alzheimer's disease riskR01AG060049 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI NATION, DANIEL A · 2020 to 2023
$2.4M
Alzheimer's Association AARG-17-532905NIA NIH HHS P01 AG052350NIA NIH HHS P01AG052350NIA NIH HHS P50 AG016573NIA NIH HHS P50AG016573NIA NIH HHS R01 AG060049NIA NIH HHS R01AG060049NIA NIH HHS R01 AG064228NIA NIH HHS R01AG064228
6 · The paper itself

Abstract

Blood pressure variability is an emerging risk factor for dementia but relationships with markers of neurodegeneration and Alzheimer's disease risk are understudied. We investigated blood pressure variability over one year and follow-up medial temporal brain volume change in apolipoprotein ϵ4 carriers and non-carriers, and in those with and without Alzheimer's disease biomarker abnormality. 1051 Alzheimer's Disease Neuroimaging Initiative participants without history of dementia or stroke underwent 3-4 blood pressure measurements over 12 months and ≥ 1 MRI thereafter. A subset (n = 252) underwent lumbar puncture to determine Alzheimer's disease cerebral spinal fluid amyloid-beta and phosphorylated tau biomarker abnormality. Blood pressure variability over 12 months was calculated as variability independent of mean. Longitudinal hippocampal and entorhinal cortex volume data were extracted from serial brain MRI scans obtained after the final blood pressure measurement. Apolipoprotein ϵ4 carrier status was defined as at least one ϵ4 allele. Bayesian growth modelling revealed a significant interaction of blood pressure variability by ϵ4 by time on hippocampal (ß: -2.61 [95% credible interval -3.02, -2.12]) and entorhinal cortex (ß: -1.47 [95% credible interval -1.71, -1.17]) volume decline. A similar pattern emerged in subsets with Alzheimer's disease pathophysiology (i.e., abnormal levels of both amyloid-beta and phosphorylated tau). Findings suggest that elevated blood pressure variability is related to medial temporal volume loss specifically in ϵ4 carriers, and in those with Alzheimer's disease biomarker abnormality. Findings could implicate blood pressure variability in medial temporal neurodegeneration observed in older ϵ4 carriers and those with prodromal Alzheimer's disease.

Indexed as

Alzheimer DiseaseCognitive DysfunctionAgedAmyloid beta-PeptidesApolipoproteinsAtrophyBayes TheoremBiomarkersBlood PressureHumansMagnetic Resonance Imagingtau ProteinsAmyloid beta-PeptidesApolipoproteinsBiomarkerstau ProteinsBlood pressure variability; Medial temporal lobes; Apolipoprotein ϵ4; Alzheimer’s disease; Biomarkers

Identifiers

PMID34581957
PMCPMC9009865
OpenAlexW3202597098

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.