Evidence map›Paper›PMID 34136638›Full record

ArticleAlzheimer's & dementia (New York, N. Y.)2021

Antiviral treatment associated with reduced risk of clinical Alzheimer's disease-A nested case-control study.

Eva-Stina Hemmingsson, Ellen Hjelmare, Bodil Weidung, Jan Olsson, Maria Josefsson, Rolf Adolfsson, Lars Nyberg, Fredrik Elgh, Hugo Lövheim

Abstract read
In one paragraph

Article in Alzheimer's & dementia (New York, N. Y.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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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

9 authors.

Eva-Stina HemmingssonDepartment of Community Medicine and Rehabilitation Geriatric Medicine, Umeå University Umeå Sweden.
Ellen HjelmareDepartment of Community Medicine and Rehabilitation Geriatric Medicine, Umeå University Umeå Sweden.
Bodil WeidungDepartment of Community Medicine and Rehabilitation Geriatric Medicine, Umeå University Umeå Sweden.
Jan OlssonDepartment of Clinical Microbiology Virology, Umeå University Umeå Sweden.
Maria JosefssonDepartment of Statistics USBE, Umeå University Umeå Sweden.
Rolf AdolfssonDepartment of Clinical Sciences Psychiatry, Umeå University Umeå Sweden.
Lars NybergUmeå Centre for Functional Brain Imaging (UFBI) Umeå, University Umeå Sweden.
Fredrik ElghDepartment of Clinical Microbiology Virology, Umeå University Umeå Sweden.
Hugo LövheimDepartment of Community Medicine and Rehabilitation Geriatric Medicine, Umeå University Umeå Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIn this nested case-control study, we investigated if antiviral treatment given prior to onset of Alzheimer's disease (AD) could influence incident AD.

methodsFrom a large population-based cohort study in northern Sweden, 262 individuals that later developed AD were compared to a non-AD matched control group with respect to prescriptions of herpes antiviral treatment. All included subjects were herpes simplex virus 1 (HSV1) carriers and the matching criteria were age, sex, apolipoprotein E genotype (ε4 allele carriership), and study sample start year.

resultsAmong those who developed AD, 6 prescriptions of antivirals were found, compared to 20 among matched controls. Adjusted for length of follow-up, a conditional logistic regression indicated a difference in the risk for AD development between groups (odds ratio for AD with an antiviral prescription 0.287, DISCUSSION: Antiviral treatment might possibly reduce the risk for later development of HSV1-associated AD.

Indexed as

Alzheimer's diseaseantiviral treatmentapolipoprotein E genedementiaherpes simplexmajor neurocognitive disordernested case‐control study

Identifiers

PMID34136638
PMCPMC8190532

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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.