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- W1991458227 abstract "Unique anatomic locations and physiologic functions predispose different arteries to varying mechanical responses and pathologies. However, the underlying causes of these mechanical differences are not well understood. The objective of this study was to first identify structural differences in the arterial matrix that would account for the mechanical differences between healthy femoral and carotid arteries and second to utilize these structural observations to perform a microstructurally motivated constitutive analysis. Femoral and carotid arteries were subjected to cylindrical biaxial loading and their microstructure was quantified using two-photon microscopy. The femoral arteries were found to be less compliant than the carotid arteries at physiologic loads, consistent with previous studies, despite similar extracellular compositions of collagen and elastin ( $$P> 0.05$$ ). The femoral arteries exhibited significantly less circumferential dispersion of collagen fibers ( $$P< 0.05$$ ), despite a similar mean fiber alignment direction as the carotid arteries. Elastin transmural distribution, in vivo axial stretch, and opening angles were also found to be distinctly different between the arteries. Lastly, we modeled the arteries’ mechanical behaviors using a microstructural-based, distributed collagen fiber constitutive model. With this approach, the material parameters of the model were solved using the experimental microstructural observations. The findings of this study support an important role for microstructural organization in arterial stiffness." @default.
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- W1991458227 date "2014-02-15" @default.
- W1991458227 modified "2023-09-30" @default.
- W1991458227 title "Differential mechanical response and microstructural organization between non-human primate femoral and carotid arteries" @default.
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- W1991458227 doi "https://doi.org/10.1007/s10237-014-0553-0" @default.
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