Evidence map›Paper›PMID 21777602›Full record

ArticleMechanisms of ageing and development2011

Localised micro-mechanical stiffening in the ageing aorta.

Helen K Graham, Riaz Akhtar, Constantinos Kridiotis, Brian Derby, Tribikram Kundu, Andrew W Trafford, Michael J Sherratt

Open access · hybridAbstract read
In one paragraph

Article in Mechanisms of ageing and development, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

23 citing papers in PubMed, 56 citations in OpenAlex.

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  10. Cardiovascular function, compliance, and connective tissue remodeling in the turtle, Trachemys scripta, following thermal acclimation.American journal of physiology. Regulatory, integrative and comparative physiology · 2016
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  14. Efficient and optimized identification of generalized Maxwell viscoelastic relaxation spectra.Journal of the mechanical behavior of biomedical materials · 2015
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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 3 institutions in 2 countries.

Helen K GrahamManchester Academic Health Sciences Centre, School of Biomedicine, The University of Manchester, Manchester, M13 9PT, UK.
Riaz Akhtar
Constantinos Kridiotis
Brian Derby
Tribikram Kundu
Andrew W Trafford
Michael J Sherratt
Manchester Academic Health Science Centre · GBUniversity of Manchester · GBUniversity of Arizona · US

Funding

British Heart Foundation 07/099/23758British Heart Foundation FS/08/036/25364British Heart Foundation PG/07/099/23758British Heart Foundation PG/09/062/27872Wellcome Trust WT085981AIA
6 · The paper itself

Abstract

Age-related loss of tissue elasticity is a common cause of human morbidity and arteriosclerosis (vascular stiffening) is associated with the development of both fatal strokes and heart failure. However, in the absence of appropriate micro-mechanical testing methodologies, multiple structural remodelling events have been proposed as the cause of arteriosclerosis. Therefore, using a model of ageing in female sheep aorta (young: <18 months, old: >8 years) we: (i) quantified age-related macro-mechanical stiffness, (ii) localised in situ micro-metre scale changes in acoustic wave speed (a measure of tissue stiffness) and (iii) characterised collagen and elastic fibre remodelling. With age, there was an increase in both macro-mechanical stiffness and mean microscopic wave speed (and hence stiffness; young wave speed: 1701±1ms(-1), old wave speed: 1710±1ms(-1), p<0.001) which was localized to collagen fibril-rich regions located between large elastic lamellae. These micro-mechanical changes were associated with increases in both collagen and elastic fibre content (collagen tissue area, young: 31±2%, old: 40±4%, p<0.05; elastic fibre tissue area, young: 55±3%, old: 69±4%, p<0.001). Localised collagen fibrosis may therefore play a key role in mediating age-related arteriosclerosis. Furthermore, high frequency scanning acoustic microscopy is capable of co-localising micro-mechanical and micro-structural changes in ageing tissues.

Indexed as

AgingAnimalsAortaBiomechanical PhenomenaElasticityElastic TissueExtracellular MatrixFemaleMicroscopy, AcousticSheepVascular Stiffness

Identifiers

PMID21777602
PMCPMC3192262
OpenAlexW2164131307

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.