Evidence map›Paper›PMID 33126880›Full record

ArticleNutrition journal2020

Effect of plasma polyunsaturated fatty acid levels on leukocyte telomere lengths in the Singaporean Chinese population.

Xuling Chang, Rajkumar Dorajoo, Ye Sun, Ling Wang, Choon Nam Ong, Jianjun Liu, Chiea Chuen Khor, Jian-Min Yuan, Woon Puay Koh, Yechiel Friedlander and 1 more

Open access · goldAbstract read
In one paragraph

Article in Nutrition journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 33 citations in OpenAlex.

  1. Vitamin DThe American journal of clinical nutrition · 2025
    Trial
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. 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

11 authors at 8 institutions in 3 countries.

Xuling ChangDepartment of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 12, 1E Kent Ridge Road, Singapore, 119228, Singapore.
Rajkumar DorajooGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Ye SunNestlé Research Singapore Hub, Singapore, 21 Biopolis Drive, Nucleos, Singapore, Singapore.
Ling WangGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Choon Nam OngSaw Swee Hock School of Public Health, National University of Singapore, National University Health System, Singapore, Singapore.
Jianjun LiuGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Chiea Chuen KhorGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Jian-Min YuanDivision of Cancer Control and Population Sciences, UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, USA.
Woon Puay KohSaw Swee Hock School of Public Health, National University of Singapore, National University Health System, Singapore, Singapore.
Yechiel FriedlanderSchool of Public Health and Community Medicine, Hebrew University of Jerusalem, Jerusalem, Israel. yechielf@ekmd.huji.ac.il.
Chew-Kiat HengDepartment of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 12, 1E Kent Ridge Road, Singapore, 119228, Singapore. paehck@nus.edu.sg.
National University of Singapore · SGAgency for Science, Technology and Research · SGGenome Institute of Singapore · SGHebrew University of Jerusalem · ILNational University Health System · SGNestlé (Singapore) · SGSingapore Eye Research Institute · SGUniversity of Pittsburgh · US

Funding

Prospective studies of cancer etiology and prevention in Shanghai and SingaporeR01CA144034 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YUAN, JIAN-MIN · 2010 to 2014
$7.0M
THE SINGAPORE COHORT STUDY OF DIET AND CANCERR01CA080205 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI YUAN, JIAN-MIN · 1999 to 2009
$5.3M
Cancer epidemiology cohorts in Shanghai and Singapore UM1CA182876 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YUAN, JIAN-MIN · 2014 to 2018
$4.3M
The Singapore Chinese Health StudyU01CA182876 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YUAN, JIAN-MIN · 2019 to 2019
$150k
NCI NIH HHS R01 CA080205NCI NIH HHS R01 CA144034NCI NIH HHS U01 CA182876NCI NIH HHS UM1 CA182876
6 · The paper itself

Abstract

backgroundShorter telomere length (TL) has been associated with poor health behaviors, increased risks of chronic diseases and early mortality. Excessive shortening of telomere is a marker of accelerated aging and can be influenced by oxidative stress and nutritional deficiency. Plasma n6:n3 polyunsaturated fatty acid (PUFA) ratio may impact cell aging. Increased dietary intake of marine n-3 PUFA is associated with reduced telomere attrition. However, the effect of plasma PUFA on leukocyte telomere length (LTL) and its interaction with genetic variants are not well established.

methodsA nested coronary artery disease (CAD) case-control study comprising 711 cases and 638 controls was conducted within the Singapore Chinese Health Study (SCHS). Samples genotyped with the Illumina ZhongHua-8 array. Plasma n-3 and n-6 PUFA were quantified using mass spectrometry (MS). LTL was measured with quantitative PCR method. Linear regression was used to test the association between PUFA and LTL. The interaction between plasma PUFAs and genetic variants was assessed by introducing an additional term (PUFA×genetic variant) in the regression model. Analysis was carried out in cases and controls separately and subsequently meta-analyzed using the inverse-variance weighted method. We further assessed the association of PUFA and LTL with CAD risk by Cox Proportional-Hazards model and whether the effect of PUFA on CAD was mediated through LTL by using structural equation modeling.

resultsHigher n6:n3 ratio was significantly associated with shorter LTL (p = 0.018) and increased CAD risk (p = 0.005). These associations were mainly driven by elevated plasma total n-3 PUFAs, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) (p < 0.05). There was a statistically significant interaction for an intergenic single nucleotide polymorphism (SNP) rs529143 with plasma total n-3 PUFA and DHA on LTL beyond the genome-wide threshold (p < 5 ×  10

conclusionsHigher plasma n6:n3 PUFA ratio, and lower EPA and DHA n-3 PUFAs were associated with shorter LTL and increased CAD risk in this Chinese population. Furthermore, genetic variants may modify the effect of PUFAs on LTL. PUFA and LTL had independent effect on CAD risk in our study population.

Indexed as

LeukocytesTelomereCase-Control StudiesChinaFatty Acids, UnsaturatedHumansFatty Acids, UnsaturatedGene-diet interactionLeukocyte telomere lengthPolyunsaturated fatty acid

Identifiers

PMID33126880
PMCPMC7602302
OpenAlexW3097940301

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.