Evidence map›Paper›PMID 34465358›Full record

ArticleJournal of neuroinflammation2021

Hippocampal glucose uptake as a surrogate of metabolic change of microglia in Alzheimer's disease.

Hongyoon Choi, Yoori Choi, Eun Ji Lee, Hyun Kim, Youngsun Lee, Seokjun Kwon, Do Won Hwang, Dong Soo Lee, Alzheimer’s Disease Neuroimaging Initiative

Abstract read
In one paragraph

Article in Journal of neuroinflammation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing 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

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

  1. Pooled it
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  13. Roles of TREM2 in Alzheimer's disease.Translational neurodegeneration · 2025
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  16. Revisiting the critical roles of reactive microglia in traumatic brain injury.International journal of surgery (London, England) · 2025
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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

9 authors.

Hongyoon Choi *Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea. chy1000@snu.ac.kr.
Yoori Choi *Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea.
Eun Ji LeeDepartment of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea.
Hyun KimDepartment of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea.
Youngsun LeeDepartment of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea.
Seokjun KwonDepartment of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea.
Do Won HwangDepartment of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea.
Dong Soo LeeDepartment of Nuclear Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, Seoul, Republic of Korea. dsl@plaza.snu.ac.kr.
Alzheimer’s Disease Neuroimaging Initiative

Funding

Alzheimer's Disease Neuroimaging Initiative - SupplementU01AG024904 · NIA · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI WEINER, MICHAEL W · 2004 to 2015
$121.0M
National Research Foundation of Korea 2019K1A3A1A14065446National Research Foundation of Korea 2019R1F1A1061412National Research Foundation of Korea 2020M3A9B6038086National Research Foundation of Korea NRF-2017M3C7A1048079National Research Foundation of Korea NRF-2020R1A2C2101069NIA NIH HHS U01 AG024904
6 · The paper itself

Abstract

backgroundDynamically altered microglia play an important role in the progression of Alzheimer's disease (AD). Here, we found a close association of the metabolic reconfiguration of microglia with increased hippocampal glucose uptake on [

methodsWe used an AD animal model, 5xFAD, to analyze hippocampal glucose metabolism using both animal FDG PET and ex vivo FDG uptake test. Cells of the hippocampus were isolated to perform single-cell RNA-sequencing (scRNA-seq). The molecular features of cells associated with glucose metabolism were analyzed at a single-cell level. In order to apply our findings to human brain imaging study, brain FDG PET data obtained from the Alzheimer's Disease Neuroimaging Initiative were analyzed. FDG uptake in the hippocampus was compared according to the diagnosis, AD, mild cognitive impairment, and controls. The correlation analysis between hippocampal FDG uptake and soluble TREM2 in cerebrospinal fluid was performed.

resultsIn the animal study, 8- and 12-month-old 5xFAD mice showed higher FDG uptake in the hippocampus than wild-type mice. Cellular FDG uptake tests showed that FDG activity in hippocampal microglia was increased in the AD model, while FDG activity in non-microglial cells of the hippocampus was not different between the AD model and wild-type. scRNA-seq data showed that changes in glucose metabolism signatures including glucose transporters, glycolysis and oxidative phosphorylation, mainly occurred in microglia. A subset of microglia with higher glucose transporters with defective glycolysis and oxidative phosphorylation was increased according to disease progression. In the human imaging study, we found a positive association between soluble TREM2 and hippocampal FDG uptake. FDG uptake in the hippocampus at the baseline scan predicted mild cognitive impairment conversion to AD.

conclusionsWe identified the reconfiguration of microglial glucose metabolism in the hippocampus of AD, which could be evaluated by FDG PET as a feasible surrogate imaging biomarker for microglia-mediated inflammation.

Indexed as

Alzheimer DiseaseAnimalsCognitive DysfunctionDisease Models, AnimalGlucoseHippocampusHumansMiceMicrogliaNeuroimagingPositron-Emission TomographyGlucoseAlzheimer’s diseaseHippocampusMicrogliaPositron emission tomographySingle-cell RNA-sequencing

Identifiers

PMID34465358
PMCPMC8408933

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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.