Evidence map›Paper›PMID 26472304›Full record

ArticleJournal of biomechanics2015

A uni-extension study on the ultimate material strength and extreme extensibility of atherosclerotic tissue in human carotid plaques.

Zhongzhao Teng, Jiaxuan Feng, Yongxue Zhang, Michael P F Sutcliffe, Yuan Huang, Adam J Brown, Zaiping Jing, Qingsheng Lu, Jonathan H Gillard

Abstract read
In one paragraph

Article in Journal of biomechanics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Stress-Relaxation and Cyclic Behavior of Human Carotid Plaque Tissue.Frontiers in bioengineering and biotechnology · 2020
    Article
  7. Article
  8. Article
  9. Article
4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Zhongzhao TengDepartment of Radiology, University of Cambridge, UK; Department of Engineering, University of Cambridge, UK. Electronic address: zt215@cam.ac.uk.
Jiaxuan FengDepartment of Vascular Surgery, Changhai Hospital, Shanghai, China.
Yongxue ZhangDepartment of Vascular Surgery, Changhai Hospital, Shanghai, China.
Michael P F SutcliffeDepartment of Engineering, University of Cambridge, UK.
Yuan HuangDepartment of Radiology, University of Cambridge, UK.
Adam J BrownDivision of Cardiovascular Medicine, University of Cambridge, UK.
Zaiping JingDepartment of Vascular Surgery, Changhai Hospital, Shanghai, China.
Qingsheng LuDepartment of Vascular Surgery, Changhai Hospital, Shanghai, China.
Jonathan H GillardDepartment of Radiology, University of Cambridge, UK.

Funding

British Heart Foundation PG/11/74/29100British Heart Foundation RG/10/007/28300
6 · The paper itself

Abstract

Atherosclerotic plaque rupture occurs when mechanical loading exceeds its material strength. Mechanical analysis has been shown to be complementary to the morphology and composition for assessing vulnerability. However, strength and stretch thresholds for mechanics-based assessment are currently lacking. This study aims to quantify the ultimate material strength and extreme extensibility of atherosclerotic components from human carotid plaques. Tissue strips of fibrous cap, media, lipid core and intraplaque hemorrhage/thrombus were obtained from 21 carotid endarterectomy samples of symptomatic patients. Uni-extension test with tissue strips was performed until they broke or slid. The Cauchy stress and stretch ratio at the peak loading of strips broken about 2mm away from the clamp were used to characterize their ultimate strength and extensibility. Results obtained indicated that ultimate strength of fibrous cap and media were 158.3 [72.1, 259.3] kPa (Median [Inter quartile range]) and 247.6 [169.0, 419.9] kPa, respectively; those of lipid and intraplaque hemorrhage/thrombus were 68.8 [48.5, 86.6] kPa and 83.0 [52.1, 124.9] kPa, respectively. The extensibility of each tissue type were: fibrous cap - 1.18 [1.10, 1.27]; media - 1.21 [1.17, 1.32]; lipid - 1.25 [1.11, 1.30] and intraplaque hemorrhage/thrombus - 1.20 [1.17, 1.44]. Overall, the strength of fibrous cap and media were comparable and so were lipid and intraplaque hemorrhage/thrombus. Both fibrous cap and media were significantly stronger than either lipid or intraplaque hemorrhage/thrombus. All atherosclerotic components had similar extensibility. Moreover, fibrous cap strength in the proximal region (closer to the heart) was lower than that of the distal. These results are helpful in understanding the material behavior of atherosclerotic plaques.

Indexed as

AgedCarotid ArteriesEndarterectomy, CarotidFemaleFibrosisHemorrhageHumansMaleMaterials TestingMiddle AgedPlaque, AtheroscleroticAtherosclerosisExtensibilityFibrous capHemorrhageLipid coreUltimate strength

Identifiers

PMID26472304
PMCPMC4655866

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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.