Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Schriefl, AJ; Zeindlinger, G; Pierce, DM; Regitnig, P; Holzapfel, GA.
Determination of the layer-specific distributed collagen fibre orientations in human thoracic and abdominal aortas and common iliac arteries.
J R Soc Interface. 2012; 9(71):1275-1286
Doi: 10.1098/rsif.2011.0727
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- Co-Autor*innen der Med Uni Graz
- Regitnig Peter
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- Abstract:
- The established method of polarized microscopy in combination with a universal stage is used to determine the layer-specific distributed collagen fibre orientations in 11 human non-atherosclerotic thoracic and abdominal aortas and common iliac arteries (63 ± 15.3 years, mean ± s.d.). A dispersion model is used to quantify over 37 000 recorded fibre angles from tissue samples. The study resulted in distinct fibre families, fibre directions, dispersion and thickness data for each layer and all vessels investigated. Two fibre families were present for the intima, media and adventitia in the aortas, with often a third and sometimes a fourth family in the intima in the respective axial and circumferential directions. In all aortas, the two families were almost symmetrically arranged with respect to the cylinder axis, closer to the axial direction in the adventitia, closer to the circumferential direction in the media and in between in the intima. The same trend was found for the intima and adventitia of the common iliac arteries; however, there was only one preferred fibre alignment present in the media. In all locations and layers, the observed fibre orientations were always in the tangential plane of the walls, with no radial components and very small dispersion through the wall thickness. A wider range of in-plane fibre orientations was present in the intima than in the media and adventitia. The mean total wall thickness for the aortas and the common iliac artery was 1.39 and 1.05 mm, respectively. For the aortas, a slight thickening of the intima and a thinning of the media in increasingly distal regions were observed. A clear intimal thickening was present distal to the branching of the celiac arteries. All data, except for the media of the common iliac arteries, showed two prominent collagen fibre families for all layers so that two-fibre family models seem most appropriate.
- Find related publications in this database (using NLM MeSH Indexing)
- Adult -
- Aged -
- Aorta, Abdominal - chemistry
- Computer Simulation -
- Female -
- Humans -
- Iliac Artery - chemistry
- Male -
- Middle Aged -
- Models, Anatomic -
- Models, Cardiovascular -
- Models, Chemical -
- Molecular Conformation -
- Thoracic Arteries - chemistry
- Find related publications in this database (Keywords)
- collagen
- orientation
- distribution
- polarized light
- microscopy
- human aorta