Evidence map›Paper›PMID 33367599›Full record

ArticleThe journals of gerontology. Series A, Biological sciences and medical sciences2021

Short Leukocyte Telomeres, But Not Telomere Attrition Rates, Predict Memory Decline in the 20-Year Longitudinal Betula Study.

Sara Pudas, Maria Josefsson, Annelie Nordin Adolfsson, Mattias Landfors, Karolina Kauppi, Line Marie Veng-Taasti, Magnus Hultdin, Rolf Adolfsson, Sofie Degerman

Abstract read
In one paragraph

Article in The journals of gerontology. Series A, Biological sciences and medical sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–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

10 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Observational
  8. Article
  9. Article
  10. 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.

Sara PudasDepartment of Integrative Medical Biology, Umeå University, Sweden.ORCID 0000-0001-9512-3289
Maria JosefssonCenter for Ageing and Demographic Research, Umeå University, Sweden.ORCID 0000-0002-1812-3581
Annelie Nordin AdolfssonDepartment of Clinical Sciences, Umeå University, Sweden.
Mattias LandforsDepartment of Medical Biosciences, Pathology, Umeå University, Sweden.
Karolina KauppiDepartment of Integrative Medical Biology, Umeå University, Sweden.
Line Marie Veng-TaastiDepartment of Psychology, Umeå University, Sweden.
Magnus HultdinDepartment of Medical Biosciences, Pathology, Umeå University, Sweden.
Rolf AdolfssonDepartment of Clinical Sciences, Umeå University, Sweden.
Sofie DegermanDepartment of Medical Biosciences, Pathology, Umeå University, Sweden.ORCID 0000-0002-2783-0712

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leukocyte telomere length (LTL) is a proposed biomarker for aging-related disorders, including cognitive decline and dementia. Long-term longitudinal studies measuring intra-individual changes in both LTL and cognitive outcomes are scarce, precluding strong conclusions about a potential aging-related relationship between LTL shortening and cognitive decline. This study investigated associations between baseline levels and longitudinal changes in LTL and memory performance across an up to 20-year follow-up in 880 dementia-free participants from a population-based study (mean baseline age: 56.8 years, range: 40-80; 52% female). Shorter baseline LTL significantly predicted subsequent memory decline (r = .34, 95% confidence interval: 0.06, 0.82), controlling for age, sex, and other relevant covariates. No significant associations were however observed between intra-individual changes in LTL and memory, neither concurrently nor with a 5-year time-lag between LTL shortening and memory decline. These results support the notion of short LTL as a predictive factor for aging-related memory decline, but suggest that LTL dynamics in adulthood and older age may be less informative of cognitive outcomes in aging. Furthermore, the results highlight the importance of long-term longitudinal evaluation of outcomes in biomarker research.

Indexed as

Telomere ShorteningAdultAgedAged, 80 and overBiomarkersCognitive DysfunctionFemaleHumansLeukocytesLongitudinal StudiesMaleMiddle AgedNeuropsychological TestsTelomereBiomarkersCognitive agingLeukocyte telomere lengthLongitudinalMemoryPopulation-based

Identifiers

PMID33367599
PMCPMC8140048

What OpenQuestion holds

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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.