Evidence map›Paper›PMID 33580369›Full record

ArticleNeurochemical research2021

Hypermethylation of Mitochondrial Cytochrome b and Cytochrome c Oxidase II Genes with Decreased Mitochondrial DNA Copy Numbers in the APP/PS1 Transgenic Mouse Model of Alzheimer's Disease.

Yingying Xu, Ling Cheng, Jing Sun, Fan Li, Xiangtian Liu, Yan Wei, Min Han, Zhengyu Zhu, Jianzhong Bi, Chao Lai and 1 more

Abstract read
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In one paragraph

Article in Neurochemical research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

24 citing papers in PubMed, 42 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Mitochondrial dysfunction in Alzheimer's disease: Guiding the path to targeted therapies.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Review
  14. Article
  15. Mitochondria in Alzheimer's Disease Pathogenesis.Life (Basel, Switzerland) · 2024
    Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Review
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

11 authors at 1 institution in 1 country.

Yingying XuDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Ling ChengDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Jing SunDepartment of Pharmacy, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Fan LiDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Xiangtian LiuDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Yan WeiDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Min HanDepartment of General Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Zhengyu ZhuDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Jianzhong BiDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China.
Chao LaiDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China. laichao@tom.com.
Yun WangDepartment of Neurology Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247th of Beiyuan Rd., Jinan, Shandong, China. wang_yun0531@163.com.
Second Hospital of Shandong University · CN

Funding

Key Research and Development Program of Shandong Province 2017GSF218046National Natural Science Foundation of China 81870848
6 · The paper itself

Abstract

Alzheimer's disease (AD) is the most common cause of dementia. Increasing evidence shows that mitochondrial DNA (mtDNA) methylation plays an essential role in many diseases related to mitochondrial dysfunction. Since mitochondrial impairment is a key feature of AD, mtDNA methylation may also contribute to AD, but few studies have addressed this issue. Methylation changes of the mitochondrial cytochrome b (CYTB) and cytochrome c oxidase II (COX II) genes in AD have not been reported. We analyzed mtDNA methylation changes of the CYTB and COX II genes in an APP/PS1 transgenic mouse model of AD using pyrosequencing. We examined mtDNA copy numbers and the levels of expression by quantitative real-time PCR. Average methylation levels of different CpG sites were ≤ 4.0%. Methylated mtDNA accounted for only a small part of the total mtDNA. We also observed hypermethylation of mitochondrial CYTB and COX II genes with decreased mtDNA copy numbers and expression in the hippocampi of APP/PS1 transgenic mice. mtDNA methylation may play an important role in AD pathology, which may open a new window for AD therapy.

Indexed as

DNA Copy Number VariationsDNA MethylationAlzheimer DiseaseAmyloid beta-Protein PrecursorAnimalsCytochromes bDNA, MitochondrialElectron Transport Complex IVHumansMaleMiceMice, Inbred C57BLMice, TransgenicMitochondriaPresenilin-1Amyloid beta-Protein Precursorcytochrome C oxidase subunit IICytochromes bDNA, MitochondrialElectron Transport Complex IVPresenilin-1PSEN1 protein, humanAlzheimer’s diseaseElectron transport chainMitochondrial DNA methylationMitoepigeneticsPyrosequencing

Identifiers

PMID33580369
OpenAlexW3126884424

What OpenQuestion holds

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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.