Evidence map›Paper›PMID 31385821›Full record

ArticleAlzheimer disease and associated disorders

Neuroprotective Biomarkers and Cognitive Function in a Long-Term Prospective Population-based Study of Aging US Adults.

Adam J Paulsen, Carla R Schubert, Alex Pinto, Cynthia M Carlsson, Richard J Chappell, Mary E Fischer, Barbara E K Klein, Ronald Klein, Michael Y Tsai, Karen J Cruickshanks

Abstract read
In one paragraph

Article in Alzheimer disease and associated disorders. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
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

10 authors.

Adam J PaulsenDepartments of Ophthalmology and Visual Sciences.
Carla R SchubertDepartments of Ophthalmology and Visual Sciences.
Alex PintoDepartments of Ophthalmology and Visual Sciences.
Cynthia M CarlssonMedicine.
Richard J ChappellBiostatistics and Medical Informatics.
Mary E FischerDepartments of Ophthalmology and Visual Sciences.
Barbara E K KleinDepartments of Ophthalmology and Visual Sciences.
Ronald KleinDepartments of Ophthalmology and Visual Sciences.
Michael Y TsaiDepartment of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, MN.
Karen J CruickshanksDepartments of Ophthalmology and Visual Sciences.

Funding

Wisconsin Alzheimer's Disease Research CenterP30AG062715 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI AMY J. KIND · 2019 to 2026
$34.5M
THE EPIDEMIOLOGY OF AGE-RELATED OCULAR DISEASEU10EY006594 · NEI · UNIVERSITY OF WISCONSIN-MADISON · PI KLEIN, BARBARA EDEN · 1987 to 2018
$17.3M
Epidemiology of Age-related Hearing LossR37AG011099 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI CRUICKSHANKS, KAREN J · 2009 to 2018
$7.4M
EPIDEMIOLOGY OF AGE-RELATED HEARING LOSSR01AG011099 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI CRUICKSHANKS, KAREN J · 1993 to 2008
$6.1M
NEI NIH HHS U10 EY006594NIA NIH HHS P30 AG062715NIA NIH HHS R01 AG011099NIA NIH HHS R37 AG011099
6 · The paper itself

Abstract

backgroundRelationships between brain-derived neurotrophic factor (BDNF), insulin-like growth factor (IGF-1), aldosterone, and cognition in aging were evaluated in the population-based Epidemiology of Hearing Loss Study (1993 to present).

methodsBeginning in 1998 to 2000, cognitive impairment was assessed by report of physician diagnoses and the Mini-Mental State Examination. In 2009 to 2010 and 2013 to 2016, information was collected on diagnosis of mild cognitive impairment/dementia. Decline in cognitive function was assessed by principal component analysis from additional tests administered during 2009 to 2010 and 2013 to 2016. BDNF, IGF-1, and aldosterone were measured in serum collected in 1998 to 2000.

resultsThere were 1970 participants (mean age=66.9 y; 59.1% female) without cognitive impairment at baseline. Among women, low BDNF was associated with 16-year incident cognitive impairment [hazard ratio=1.76; 95% confidence interval (CI)=1.04, 2.98]. Among men, increasing IGF-1 was associated with decreased risk [per SD: relative risk (RR)=0.57; 95% CI=0.35, 0.92], whereas increasing aldosterone levels were associated with increased risk (per SD: RR=1.28; 95% CI=1.01, 1.62) for 5-year incident mild cognitive impairment/dementia. Overall, low BDNF was associated with increased risk (RR=1.52; 95% CI=1.02, 2.26) for 5-year cognitive decline.

conclusionLow levels of serum BDNF and IGF-1 were associated with poorer cognition during aging. There may be differential biomarker effects by sex.

Indexed as

Protective FactorsAgedAgingAldosteroneBiomarkersBrain-Derived Neurotrophic FactorCognitionCognitive DysfunctionFemaleHumansInsulin-Like Growth Factor ILongitudinal StudiesMaleNeuropsychological TestsProspective StudiesUnited StatesAldosteroneBiomarkersBrain-Derived Neurotrophic FactorInsulin-Like Growth Factor I

Identifiers

PMID31385821
PMCPMC6995426

What OpenQuestion holds

Textmetadata
LicenceTDM
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.