Is location a significant parameter in the layer dependent dissection properties of the aorta?

Ríos-Ruiz, Itziar (Universidad de Zaragoza) ; Martínez, Miguel Ángel (Universidad de Zaragoza) ; Peña, Estefanía (Universidad de Zaragoza)

Resumen: Proper characterisation of biological tissue is key to understanding the effect of the biomechanical environment in the physiology and pathology of the cardiovascular system. Aortic dissection in particular is a prevalent and sometimes fatal disease that still lacks a complete comprehension of its progression. Its development and outcome, however, depend on the location in the vessel. Dissection properties of arteries are frequently studied via delamination tests, such as the T-peel test and the mixed-mode peel test. So far, a study that performs both tests throughout different locations of the aorta, as well as dissecting several interfaces, is missing. This makes it difficult to extract conclusions in terms of vessel heterogeneity, as a standardised experimental procedure cannot be assured for different studies in literature. Therefore, both dissection tests have been here performed on healthy porcine aortas, dissecting three interfaces of the vessels, i.e., the intima-media, the media-adventitia and the media within itself, considering different locations of the aorta, the ascending thoracic aorta (ATA), the descending thoracic aorta and the infrarenal abdominal aorta (IAA). Significant differences were found for both, layers and location. In particular, dissection forces in the ATA were the highest and the separation of the intima-media interface required significantly the lowest force. Moreover, dissection in the longitudinal direction of the vessel generally required more force than in the circumferential one. These results emphasise the need to characterise aortic tissue considering the specific location and dissected layer of the vessel.

Idioma: Inglés

DOI: 10.1007/s10237-022-01627-9

Año: 2022

Publicado en: BIOMECHANICS AND MODELING IN MECHANOBIOLOGY 21, 6 (2022), 1887-1901
ISSN: 1617-7959

Factor impacto JCR: 3.5 (2022)

Categ. JCR: BIOPHYSICS rank: 21 / 70 = 0.3 (2022) - Q2 - T1
Categ. JCR: ENGINEERING, BIOMEDICAL rank: 51 / 96 = 0.531 (2022) - Q3 - T2

Factor impacto CITESCORE: 6.7 - Engineering (Q1) - Mathematics (Q1) - Biochemistry, Genetics and Molecular Biology (Q2)

Factor impacto SCIMAGO: 0.789 - Mechanical Engineering (Q1) - Modeling and Simulation (Q1) - Biotechnology (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/T24-20R
Financiación: info:eu-repo/grantAgreement/ES/DGA-IIU/1408-2018
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-107517RB-I00
Financiación: info:eu-repo/grantAgreement/ES/UZ/ICTS NANBIOSIS-U13 Unit-CIBER-BBN

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Mec.Med.Cont. y Teor.Est. (Dpto. Ingeniería Mecánica)