Cited by 205Cardiac Fibrosis and RemodelingCardiomyopathy and Myosin StudiesCardiac electrophysiology and arrhythmias

Three-dimensional transmural organization of perimysial collagen in the heart

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Pope, Adèle J., Sands, Gregory B., Smaill, Bruce H., LeGrice, Ian J.·2008·American Journal of Physiology-Heart and Circulatory Physiology

Abstract

There is strong support for the view that the ventricular myocardium has a laminar organization in which myocytes are grouped into branching layers separated by cleavage planes. However, understanding of the extent and functional implications of this architecture has been limited by the lack of a systematic three-dimensional description of the organization of myocytes and associated perimysial collagen. We imaged myocytes and collagen across the left ventricular wall at high resolution in seven normal rat hearts using extended volume confocal microscopy. We developed novel reconstruction and segmentation techniques necessary for the quantitative analysis of three-dimensional myocyte and perimysial collagen organization. The results confirm that perimysial collagen has an ordered arrangement and that it defines a laminar organization. Perimysial collagen is composed of three distinct forms: extensive meshwork on laminar surfaces, convoluted fibers connecting adjacent layers, and longitudinal cords. While myolaminae are the principal form of structural organization throughout most of the wall, they are not seen in the subepicardium, where perimysial collagen is present only as longitudinal cords.

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Registry

Crossref · 10.1152/ajpheart.00484.2008

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  • In native heart, overlapping myocardial fibers are arranged into distinct laminae four to six myocytes thick and separated from adjacent laminae by an extracellular collagen network.

    “In the native heart, overlapping myocardial fibers are arranged into distinct laminae four to six myocytes thick and separated from adjacent laminae by an extracellular collagen network42.”

    From A tissue-engineered scale model of the heart ventricle (2018) · cites this paper as [42]

    The Discussion (3-D perimysial collagen organization; page unavailable) describes branching myocardial layers grouped by perimysial collagen and reports them as approximately four cells thick, not four to six. The Results (page unavailable) show collagen between adjacent layers, but the paper also says laminar structure is not evident in the outer 10–20% of the rat left ventricle, so the claim is too general. (LLM, conf=0.86)

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Authors
Pope, A. J., Sands, G. B., Smaill, B. H., & LeGrice, I. J.
Affiliations
University of Auckland (NZ)
Venue
American Journal of Physiology-Heart and Circulatory Physiology
Published
2008-09
Volume
295
Issue
3
Pages
H1243-H1252
ISSN
  • 0363-6135 (ISSN-L)
  • 1522-1539
OpenAlex
W2117433444
Cited by
205
References
51
Citations by year
2026: 7 · 2025: 6 · 2024: 4 · 2023: 8 · 2022: 9 · 2021: 16 · 2020: 16 · 2019: 14 · 2018: 12 · 2017: 10 · 2016: 11 · 2015: 15 · 2014: 12 · 2013: 15 · 2012: 18
FWCI
7.55
Type
journal article
Language
en
Open access
Locations
  • American Journal of Physiology-Heart and Circulatory Physiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • ResearchSpace (University of Auckland) (submittedVersion)
Funders
  • National Heart Foundation of New Zealand
  • National Institutes of Health
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiomyopathy and Myosin Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
Keywords
left ventricular wall, 3D reconstruction, collagen fiber arrangement, subepicardium, rat heart
MeSH terms
Animals, Collagen, Endocardium, Heart Ventricles, Image Processing, Computer-Assisted, Male, Myocardium, Pericardium, Rats, Inbred WKY, Rats, Wistar, Microscopy, Confocal, Myocytes, Cardiac, Rats

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