Evidence map›Paper›PMID 30635610›Full record

ArticleScientific reports2019

Functional and morphological changes of the retinal vessels in Alzheimer's disease and mild cognitive impairment.

Giuseppe Querques, Enrico Borrelli, Riccardo Sacconi, Luigi De Vitis, Letizia Leocani, Roberto Santangelo, Giuseppe Magnani, Giancarlo Comi, Francesco Bandello

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed, 8 pooled it
16.4field-weighted citation impact, top 1% 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

89 citing papers in PubMed, 8 syntheses or guidelines pooled it, 151 citations in OpenAlex.

  1. Pooled it
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  9. Article
  10. Retinal Vascularity Index in Mild Cognitive Impairment.Translational vision science & technology · 2026
    Article
  11. Article
  12. Review
  13. Article
  14. Brain and retina in Alzheimer's disease: Pathological intersections and estimates from imaging.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  15. Ocular changes as potential biomarkers for early diagnosis of Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  16. Review
  17. Article
  18. Article
  19. Observational
  20. Article

29 more citing papers are in PubMed but not listed here.

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 at 2 institutions in 1 country.

Giuseppe QuerquesOphthalmology Department, San Raffaele University Hospital, Milan, Italy. giuseppe.querques@hotmail.it.
Enrico BorrelliOphthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy.ORCID http://orcid.org/0000-0003-2815-5031
Riccardo SacconiOphthalmology Department, San Raffaele University Hospital, Milan, Italy.ORCID http://orcid.org/0000-0003-2891-2012
Luigi De VitisOphthalmology Department, San Raffaele University Hospital, Milan, Italy.ORCID http://orcid.org/0000-0003-3778-8666
Letizia LeocaniDepartment of Neurology and Institute of Experimental Neurology-INSPE, San Raffaele University Hospital, Milan, Italy.
Roberto SantangeloDepartment of Neurology and Institute of Experimental Neurology-INSPE, San Raffaele University Hospital, Milan, Italy.
Giuseppe MagnaniDepartment of Neurology and Institute of Experimental Neurology-INSPE, San Raffaele University Hospital, Milan, Italy.
Giancarlo ComiDepartment of Neurology and Institute of Experimental Neurology-INSPE, San Raffaele University Hospital, Milan, Italy.
Francesco BandelloOphthalmology Department, San Raffaele University Hospital, Milan, Italy.
San Raffaele University of Rome · ITUniversity of Chieti-Pescara · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Imaging and histopathological studies have demonstrated that structural changes of the retina affect subjects with Alzheimer's disease (AD) or mild cognitive impairment (MCI). The aim of this study was to quantitatively investigate the retinal vessels in these disorders, using dynamic vessel analyzer (DVA) and optical coherence tomography angiography (OCTA) analysis. Twelve subjects with AD, 12 subjects with MCI, and 32 gender- and age-matched controls were prospectively enrolled. Mean ± SD age was 72.9 ± 7.2 years in the AD group, 76.3 ± 6.9 years in the MCI group, and 71.6 ± 5.9 years in the control group (p = 0.104). In the DVA dynamic analysis, the arterial dilation was decreased in the AD group (0.77 ± 2.06%), in the comparison with the control group (3.53 ± 1.25%, p = 0.002). The reaction amplitude was decreased both in AD (0.21 ± 1.80%, <0.0001) and MCI (2.29 ± 1.81%, p = 0.048) subjects, compared with controls (3.86 ± 1.94%). OCTA variables did not differ among groups. In the Pearson correlation analysis, amyloid β level in the cerebrospinal fluid was directly correlated with the arterial dilation (R = 0.441, p = 0.040) and reaction amplitude (R = 0.580, p = 0.005). This study demonstrate that Alzheimer's and MCI subjects are characterized by a significant impairment of the retinal neurovascular coupling. This impairment is inversely correlated with the level of amyloid β in the cerebrospinal fluid.

Indexed as

Neurovascular CouplingAgedAged, 80 and overAlzheimer DiseaseAngiographyCognitive DysfunctionFemaleHumansMaleMiddle AgedProspective StudiesRetinal VesselsTomography, Optical Coherence

Identifiers

PMID30635610
PMCPMC6329813
OpenAlexW2916475144

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Registered trials

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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.