Evidence map›Paper›PMID 27558117›Full record

ArticleAge (Dordrecht, Netherlands)2016

Effects of the APOE ε4 allele and education on cognitive function in Japanese centenarians.

Yoshiko Lily Ishioka, Yasuyuki Gondo, Noriyuki Fuku, Hiroki Inagaki, Yukie Masui, Michiyo Takayama, Yukiko Abe, Yasumichi Arai, Nobuyoshi Hirose

Open access · bronzeAbstract read
In one paragraph

Article in Age (Dordrecht, Netherlands), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Beneficial Effect of Societal Factors on APOE-ε2 and ε4 Carriers' Brain Health: A Systematic Review.The journals of gerontology. Series A, Biological sciences and medical sciences · 2024
    Pooled it
  2. Article
  3. Article
  4. From 70 to 100: The Kuakini Hawaii Centenarian Study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
    Article
  5. Article
  6. Article
  7. Genetic Insights into Alzheimer's Disease.Annual review of pathology · 2021
    Review
  8. Article
  9. Article
  10. The Influence of Education and ApolipoproteinJournal of aging research · 2018
    Article
  11. Article
  12. Article
  13. Article
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 4 institutions in 1 country.

Yoshiko Lily IshiokaTokyo Metropolitan Institute of Gerontology, 35-2 Sakaemachi, Itabashi-ku, Tokyo, 173-0015, Japan. ishioka@tmig.or.jp.
Yasuyuki GondoGraduate School of Human Sciences, Osaka University, 1-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Noriyuki FukuGraduate School of Health and Sports Science, Juntendo University, 1-1 Hiraka-gakuendai, Inzai-shi, Chiba, 270-1695, Japan.
Hiroki InagakiTokyo Metropolitan Institute of Gerontology, 35-2 Sakaemachi, Itabashi-ku, Tokyo, 173-0015, Japan.
Yukie MasuiTokyo Metropolitan Institute of Gerontology, 35-2 Sakaemachi, Itabashi-ku, Tokyo, 173-0015, Japan.
Michiyo TakayamaCenter for Supercentenarian Medical Research, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Yukiko AbeCenter for Supercentenarian Medical Research, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Yasumichi AraiCenter for Supercentenarian Medical Research, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Nobuyoshi HiroseCenter for Supercentenarian Medical Research, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Keio University · JPTokyo Metropolitan Institute of Gerontology · JPJuntendo University · JPOsaka University of Human Sciences · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Apolipoprotein E (APOE) ε4 allele and education have been reported to affect the cognitive function in young-old adults. However, the effects and interactions of the ε4 allele and education on cognitive function in very old age, particularly in centenarians, are not well known. We studied 542 Japanese centenarians. Using the data in total of 452 participants (74 men and 378 women, mean age 103.6 ± 3.2 years) who were genotyped and assessed cognitive function with the Mini-Mental States Examination (MMSE), we examined the effects and interactions of the ε4 allele and education on the MMSE score. First, we coded education as three levels: low, middle, and high based on the formal educational levels (analysis 1). Second, to clarify the modifying effect of education, we adopted a new coding for education into two levels, considering a periodical background (around 1900) of gender differences in educational attainments (analysis 2). In analysis 1, the main effects of the ε4 allele and education on the MMSE score were significant after adjusting for age. Further, there was a significant three-way interaction effect between the ε4 allele, education, and gender on the MMSE. Analysis 2 showed that the modifying effect of the ε4 allele by education was observed only in women with the ε4 allele. These findings suggest that both the APOE ε4 allele and education appear to be associated with cognitive function even in centenarians, but the interaction between the ε4 allele and education might depend on gender in this cohort.

Indexed as

CognitionAged, 80 and overAgingAllelesApolipoprotein E4Cohort StudiesDNAEducationFemaleGenotypeHumansJapanMaleNeuropsychological TestsRisk FactorsSex FactorsApolipoprotein E4DNAAPOECentenarianCognitionGene–environment interaction

Identifiers

PMID27558117
PMCPMC5266218
OpenAlexW2508600370

What OpenQuestion holds

Textmetadata
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.