Evidence map›Paper›PMID 34075056›Full record

ArticleNPJ aging and mechanisms of disease2021

Abnormal brain cholesterol homeostasis in Alzheimer's disease-a targeted metabolomic and transcriptomic study.

Vijay R Varma, H Büşra Lüleci, Anup M Oommen, Sudhir Varma, Chad T Blackshear, Michael E Griswold, Yang An, Jackson A Roberts, Richard O'Brien, Olga Pletnikova and 5 more

Open access · goldAbstract read
In one paragraph

Article in NPJ aging and mechanisms of disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
8.8field-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

86 citing papers in PubMed, 140 citations in OpenAlex.

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  13. Chicoric acid enhanced brain cholesterol efflux and reduced Aβ pathology via LXR-ABCA1 signaling in Alzheimer's models.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
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  19. Autophagy-lysosomal pathway in neurodegeneration.Molecular neurodegeneration advances · 2026
    Review
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26 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

15 authors at 8 institutions in 4 countries.

Vijay R VarmaClinical and Translational Neuroscience Section, Laboratory of Behavioral Neuroscience, National Institute on Aging (NIA), National Institutes of Health (NIH), Baltimore, MD, USA.
H Büşra LüleciDepartment of Bioengineering, Gebze Technical University, Kocaeli, Turkey.
Anup M OommenGlycoscience Group, NCBES National Centre for Biomedical Engineering Science, National University of Ireland Galway, Galway, Ireland.
Sudhir VarmaHiThru Analytics, Laurel, MD, USA.ORCID http://orcid.org/0000-0002-4096-4782
Chad T BlackshearUniversity of Mississippi Medical Center, Jackson, MS, USA.
Michael E GriswoldUniversity of Mississippi Medical Center, Jackson, MS, USA.
Yang AnLaboratory of Behavioral Neuroscience, National Institute on Aging (NIA), National Institutes of Health (NIH), Baltimore, MD, USA.
Jackson A RobertsClinical and Translational Neuroscience Section, Laboratory of Behavioral Neuroscience, National Institute on Aging (NIA), National Institutes of Health (NIH), Baltimore, MD, USA.ORCID http://orcid.org/0000-0003-2231-2454
Richard O'BrienDepartment of Neurology, Duke University School of Medicine, Durham, NC, USA.
Olga PletnikovaDepartment of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Juan C TroncosoDepartment of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
David A BennettRush Alzheimer Disease Center, Rush University, Chicago, IL, USA.
Tunahan ÇakırDepartment of Bioengineering, Gebze Technical University, Kocaeli, Turkey.
Cristina Legido-QuigleyKings College London, London, UK.
Madhav ThambisettyClinical and Translational Neuroscience Section, Laboratory of Behavioral Neuroscience, National Institute on Aging (NIA), National Institutes of Health (NIH), Baltimore, MD, USA. thambisettym@mail.nih.gov.ORCID http://orcid.org/0000-0002-2200-2299
National Institutes of Health · USGebze Technical University · TRJackson Memorial Hospital · USJohns Hopkins University · USDuke University · USKing's College London · GBOllscoil na Gaillimhe – University of Galway · IERush University · US

Funding

SUPPLEMENT TO RUSH ALZHEIMERS DISEASE CENTER COREP30AG010161 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI LEURGANS, SUE E. · 1991 to 2020
$49.1M
Research Education ComponentP30AG066507 · NIA · JOHNS HOPKINS UNIVERSITY · PI MARILYN S. ALBERT · 2020 to 2026
$29.3M
RISK FACTORS, PATHOLOGY, AND CLINICAL EXPRESSIONS OF ADR01AG015819 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI BENNETT, DAVID ALAN · 1998 to 2024
$21.4M
Understanding mechanisms and seeking novel biomarkers in Alzheimer's diseaseZIAAG000200 · NIA · NATIONAL INSTITUTE ON AGING · PI RESNICK, SUSAN · 2013 to 2024
$12.2M
NIA NIH HHS P30 AG010161NIA NIH HHS P30 AG066507NIA NIH HHS R01 AG015819
6 · The paper itself

Abstract

The role of brain cholesterol metabolism in Alzheimer's disease (AD) remains unclear. Peripheral and brain cholesterol levels are largely independent due to the impermeability of the blood brain barrier (BBB), highlighting the importance of studying the role of brain cholesterol homeostasis in AD. We first tested whether metabolite markers of brain cholesterol biosynthesis and catabolism were altered in AD and associated with AD pathology using linear mixed-effects models in two brain autopsy samples from the Baltimore Longitudinal Study of Aging (BLSA) and the Religious Orders Study (ROS). We next tested whether genetic regulators of brain cholesterol biosynthesis and catabolism were altered in AD using the ANOVA test in publicly available brain tissue transcriptomic datasets. Finally, using regional brain transcriptomic data, we performed genome-scale metabolic network modeling to assess alterations in cholesterol biosynthesis and catabolism reactions in AD. We show that AD is associated with pervasive abnormalities in cholesterol biosynthesis and catabolism. Using transcriptomic data from Parkinson's disease (PD) brain tissue samples, we found that gene expression alterations identified in AD were not observed in PD, suggesting that these changes may be specific to AD. Our results suggest that reduced de novo cholesterol biosynthesis may occur in response to impaired enzymatic cholesterol catabolism and efflux to maintain brain cholesterol levels in AD. This is accompanied by the accumulation of nonenzymatically generated cytotoxic oxysterols. Our results set the stage for experimental studies to address whether abnormalities in cholesterol metabolism are plausible therapeutic targets in AD.

Identifiers

PMID34075056
PMCPMC8169871
OpenAlexW3165690917

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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.