July 30, 2002Journal of Biomechanical Engineering
A New In Vitro Model to Evaluate Differential Responses of Endothelial Cells to Simulated Arterial Shear Stress Waveforms
Why the study?
Does arterial pulsatile flow alter the biological responsiveness of human umbilical vein endothelial cells compared to steady laminar shear stress or static conditions?
Population
Human umbilical vein endothelial cells (HUVECs) in an in vitro flow model
Comparison
Arterial pulsatile flow for 24 hours vs Equivalent time-average steady laminar shear…
Design
Preclinical
Follow-up
24 hours
Authors
Discussion
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Member takes
Implication
Distinct endothelial responses to pulsatile flow remain hypothesis-generating; extends in vitro mechanotransduction models but leaves open in vivo relevance.
Structured PICO
Does arterial pulsatile flow alter the biological responsiveness of human umbilical vein endothelial cells compared to steady laminar shear stress or static conditions?
P
Population
Human umbilical vein endothelial cells (HUVECs) in an in vitro flow model
I
Intervention
Arterial pulsatile flow (simulated arterial shear stress waveform modeled after flow patterns in the human abdominal aorta) for 24 hours
C
Comparator
Equivalent time-average steady laminar shear stress, and no flow (static) culture conditions
O
Outcome
Biological responsiveness including cell shape, alignment, distribution of actin stress fibers, vinculin-associated adhesion complexes, intrinsic migratory characteristics, and expression of eNOS mRNA and proteinsurrogate
Endothelial cells exhibit unique biological responsiveness to arterial pulsatile shear stress waveforms compared to steady laminar flow, highlighting their complex sensing capabilities.
Cite This Study
Blackman et al. (2002) studied this question.