Evidence map›Paper›PMID 33469834›Full record

ArticleGeroScience2021

Dynamics of leukocyte telomere length in adults aged 50 and older: a longitudinal population-based cohort study.

Zhezhou Huang, Chazhen Liu, Ye Ruan, Yanfei Guo, Shuangyuan Sun, Yan Shi, Fan Wu

Open access · greenAbstract read
In one paragraph

Article in GeroScience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 7% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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

7 authors at 2 institutions in 1 country.

Zhezhou HuangSchool of Public Health, Fudan University, 130 Dongan Road, Shanghai, 200032, China.
Chazhen LiuShanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China.
Ye RuanShanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China.
Yanfei GuoShanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China.
Shuangyuan SunShanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China.
Yan ShiShanghai Municipal Center for Disease Control and Prevention, Shanghai, 200336, China.
Fan WuSchool of Public Health, Fudan University, 130 Dongan Road, Shanghai, 200032, China. wufan@shmu.edu.cn.ORCID http://orcid.org/0000-0003-1039-3752
Shanghai Municipal Center For Disease Control Prevention · CNFudan University · CN

Funding

Towards improving the measurement of health and disability trends, the compressioR01AG034479 · NIA · WORLD HEALTH ORGANIZATION · PI CHATTERJI, SOMNATH · 2010 to 2014
$5.3M
NIA NIH HHS R01 AG034479
6 · The paper itself

Abstract

It is well established from previous cross-sectional studies that telomeres shorten with age. However, due to a considerable inter-individual variation in telomere length (TL), its relationship with biological aging is difficult to unpick. Longitudinal repeated assessments of TL changes within individuals should augment our understanding of TL dynamics in aging. This study disentangles within- and inter-individual effects of age on leukocyte telomere length (LTL) dynamics in a large population-based cohort of older adults. A total of 4053 subjects aged 50 and older from the WHO Study on global AGEing and adult health (SAGE) in Shanghai were studied. Relative LTL (T/S ratio) was measured at baseline (2009-2010) and follow-up (2017-2018) by quantitative real-time polymerase chain reaction. We used linear random slope models to analyze LTL dynamics in relation to age and sex and within-subject centering method to distinguish within- versus between-subject effects. We observed LTL shortening in 66.32%, maintenance in 11.23%, and elongation in 22.45% of the study participants. LTL declined significantly with age both cross-sectionally and longitudinally. More importantly, the longitudinal decline in LTL was much greater than the cross-sectional decline (- 0.017 (p < 0.001) versus - 0.002 (p < 0.001) per year). Furthermore, women had a lower within-subject LTL shortening rate than men (- 0.014 versus - 0.020 per year, p < 0.001). The within-individual longitudinal decline in LTL was much greater than the inter-individual cross-sectional decline, indicating that chronological age might impose a greater impact on LTL shortening than other influencing factors combined. Moreover, women showed a lower within-individual LTL shortening rate than men.

Indexed as

LeukocytesTelomereAgedChinaCohort StudiesCross-Sectional StudiesFemaleHumansMaleMiddle AgedAgeBetween-subject effectLeukocyte telomere lengthLongitudinal studySexWithin-subject effect

Identifiers

PMID33469834
PMCPMC8110630
OpenAlexW3121300443

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.