Evidence map›Paper›PMID 36060596›Full record

ArticleQuantitative imaging in medicine and surgery2022

Associations of cortical iron accumulation with cognition and cerebral atrophy in Alzheimer's disease.

Aocai Yang, Lei Du, Wenwen Gao, Bing Liu, Yue Chen, Yige Wang, Xiuxiu Liu, Kuan Lv, Wenwei Zhang, Hui Xia and 2 more

Abstract read
In one paragraph

Article in Quantitative imaging in medicine and surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  10. Regional brain iron correlates with transcriptional and cellular signatures in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  11. Review
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  16. The Azalea Hypothesis of Alzheimer Disease: A Functional Iron Deficiency Promotes Neurodegeneration.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 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

12 authors.

Aocai Yang *Department of Radiology, China-Japan Friendship Hospital, Beijing, China.
Lei Du *Department of Radiology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.
Wenwen GaoDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.
Bing LiuDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.
Yue ChenDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.
Yige WangDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.
Xiuxiu LiuDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.
Kuan LvDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.
Wenwei ZhangInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China.
Hui XiaInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China.
Kai WuSchool of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, China.
Guolin MaDepartment of Radiology, China-Japan Friendship Hospital, Beijing, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: In Alzheimer's disease (AD), cerebral iron accumulation colocalizes with the pathological proteins amyloid-β (Aβ) and tau. Furthermore, tau-induced cortical thinning is associated with cognitive decline. In this study, quantitative susceptibility mapping (QSM) was used to investigate the whole-brain distribution pattern of cortical iron deposition and its relationships with cognition and cortical thickness in AD. Methods: This cross-sectional study prospectively recruited 30 participants with AD and 26 age- and sex-matched healthy controls (HCs). All participants underwent QSM and T Results: Whole-brain QSM cross-sectional analysis in the AD group demonstrated widespread increased susceptibility across the cortical ribbon, asymmetrically covering the left hemisphere cerebral cortex, caudate nucleus, putamen, and partial cerebellar cortex. Whole-brain QSM regression analyses in the AD group showed that increased susceptibility covaried with lower MMSE and MoCA scores, and was predominantly located in the right parietal cortex and lateral occipital cortex. In the AD group, cortical thickness was reduced in the left superior temporal gyrus, right frontal pole, fusiform gyus, and pars opercularis, and there were increases in susceptibility in the right frontal pole (AD: mean ± SD 0.034±0.007 ppm, 95% CI: 0.032-0.037 ppm; HC: 0.030±0.005 ppm, 95% CI: 0.028-0.032 ppm; P=0.016) and pars opercularis (AD: 0.020±0.003 ppm, 95% CI: 0.018-0.021 ppm; HC: 0.017±0.002 ppm, 95% CI: 0.017-0.018 ppm; P=0.002). Susceptibility was negatively correlated with cortical thickness in the right pars opercularis in the entire cohort (r=-0.521, P<0.001) and AD group (r=-0.510, P=0.005). Conclusions: Widespread cortical iron, as measured by QSM, accumulated in AD and iron deposition was associated with poor cognitive performance. Increased iron content was also associated with brain atrophy. Our study suggests QSM may be a useful imaging biomarker for monitoring the neurodegenerative progression of AD.

Indexed as

Alzheimer’s disease (AD)cognitioncortical thicknessiron accumulationquantitative susceptibility imaging

Identifiers

PMID36060596
PMCPMC9403583

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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.