Evidence map›Paper›PMID 34013017›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)2021

Retinal imaging demonstrates reduced capillary density in clinically unimpaired

Fanny M Elahi, Senyo B Ashimatey, Daniel J Bennett, Samantha M Walters, Renaud La Joie, Xuejuan Jiang, Amy Wolf, Yann Cobigo, Adam M Staffaroni, Howie J Rosen and 5 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Ocular changes as potential biomarkers for early diagnosis of Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Retinal perfusion is linked to cognition and brain MRI biomarkers in Black Americans.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  10. Review
  11. Impact of aging on vascular ion channels: perspectives and knowledge gaps across major organ systems.American journal of physiology. Heart and circulatory physiology · 2023
    Review
  12. The Association ofJournal of clinical medicine · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors at 4 institutions in 1 country.

Fanny M ElahiDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Senyo B AshimateyDepartment of Ophthalmology USC Roski Eye Institute Keck School of Medicine of the University of Southern California Los Angeles California USA.
Daniel J BennettDepartment of Neurology Division of Neuroimmunology and Glial Biology Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Samantha M WaltersDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Renaud La JoieDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Xuejuan JiangDepartment of Ophthalmology USC Roski Eye Institute Keck School of Medicine of the University of Southern California Los Angeles California USA.
Amy WolfDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Yann CobigoDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Adam M StaffaroniDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Howie J RosenDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Bruce L MillerDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Gil D RabinoviciDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Joel H KramerDepartment of Neurology Memory and Aging Center Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Ari J GreenDepartment of Neurology Division of Neuroimmunology and Glial Biology Weill Institute for Neurosciences San Francisco University of California San Francisco California USA.
Amir H KashaniDepartment of Ophthalmology USC Roski Eye Institute Keck School of Medicine of the University of Southern California Los Angeles California USA.
University of California, San Francisco · USUniversity Memory and Aging Center · USUniversity of Southern California · USG1 Therapeutics (United States) · US

Funding

National Centralized Repository for Alzheimer's Disease and Related Dementias (NCRAD)U24AG021886 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI TATIANA M. FOROUD · 2002 to 2026
$119.8M
TDP-43 Loss-of-Function: Biology to BiomarkersP01AG019724 · NIA · UNIVERSITY OF PENNSYLVANIA · PI Jennifer Merrilees · 2002 to 2026
$67.2M
PrPSc SPECIFIC INTERACTION WITH NOVEL PrP-Fc FUSION PROTEINSP50AG023501 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HUANG, YADONG · 2004 to 2018
$27.1M
South Texas Alzheimer's Disease Research CenterP30AG066546 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI Mohamad Habes · 2021 to 2026
$24.0M
Multidimensional Assessment of Brain Health as A Marker of Dementia Risk and ResilienceR01AG066524 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI KASHANI, AMIR H, RAMACHANDRAN, VASAN S · 2020 to 2024
$9.7M
Mechanisms of Executive Decline in Normal AgingR01AG032289 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Kaitlin B Casaletto, JOEL H KRAMER · 2009 to 2026
$8.3M
Biological Predictors Of Brain Aging Trajectories Diversity Supplement: African American Outreach And The Intersection Between Social Determinants Of Health And Biomarkers Of Degenerative DiseaseRF1AG032289 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KRAMER, JOEL H · 2020 to 2021
$5.3M
Imaging Cerebral and Retinal Microvasculature in Cerebral Small Vessel DiseaseUH3NS100614 · NINDS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI KASHANI, AMIR H, RINGMAN, JOHN M · 2018 to 2020
$4.3M
Novel imaging and endothelial biomarkers of small vessel cerebrovascular diseaseUH3NS100608 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DECARLI, CHARLES, KRAMER, JOEL H · 2018 to 2020
$3.5M
Assessment of Retinal Capillary Density, Morphology and Function in Retinal Vascular Disease Using Novel OCT Angiography Based MetricsR01EY030564 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI KASHANI, AMIR H · 2019 to 2024
$3.5M
Effects of chronic inflammation on brain structure and functionR01AG048234 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KRAMER, JOEL H · 2015 to 2019
$3.2M
Early Age-of-Onset AD: Clinical Heterogeneity and Network DegenerationR01AG045611 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI RABINOVICI, GIL DAN · 2014 to 2018
$3.1M
CSRD VA IK2 CX002180NEI NIH HHS R01 EY030564NIA NIH HHS K23 AG061253NIA NIH HHS K24 AG045333NIA NIH HHS P01 AG019724NIA NIH HHS P30 AG066546NIA NIH HHS P50 AG023501NIA NIH HHS R01 AG032289NIA NIH HHS R01 AG045611NIA NIH HHS R01 AG048234NIA NIH HHS R01 AG066524NIA NIH HHS RF1 AG032289NIA NIH HHS U24 AG021886NINDS NIH HHS UF1 NS100614NINDS NIH HHS UH2 NS100608NINDS NIH HHS UH2 NS100614NINDS NIH HHS UH3 NS100608NINDS NIH HHS UH3 NS100614
6 · The paper itself

Abstract

introductionApolipoprotein E (

methodsWe collected retinal optical coherence tomography angiography, cognitive testing, and brain imaging in research participants and built statistical models to test genotype-phenotype associations.

resultsOur analyses demonstrate lower retinal capillary densities in early disease, in cognitively normal DISCUSSION: These results suggest that

Indexed as

Alzheimer's diseaseapolipoprotein E ε4capillary rarefactionpreclinical biomarkerpreclinical diseasevascular contributions to Alzheimer's disease

Identifiers

PMID34013017
PMCPMC8111703
OpenAlexW3163424125

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.