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@ARTICLE{Rack:838893,
author = {Rack, Kathrin and Huck, Volker and Hoore, Masoud and
Fedosov, Dmitry A. and Schneider, Stefan W. and Gompper,
Gerhard},
title = {{M}argination and stretching of von {W}illebrand factor in
the blood stream enable adhesion},
journal = {Scientific reports},
volume = {7},
number = {1},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2017-07399},
pages = {14278},
year = {2017},
abstract = {The protein von Willebrand factor (VWF) is essential in
primary hemostasis, as it mediates platelet adhesion to
vessel walls. VWF retains its compact (globule-like) shape
in equilibrium due to internal molecular associations, but
is able to stretch when a high enough shear stress is
applied. Even though the shear-flow sensitivity of VWF
conformation is well accepted, the behavior of VWF under
realistic blood flow conditions remains poorly understood.
We perform mesoscopic numerical simulations together with
microfluidic experiments in order to characterize VWF
behavior in blood flow for a wide range of flow-rate and
hematocrit conditions. In particular, our results
demonstrate that the compact shape of VWF is important for
its migration (or margination) toward vessel walls and that
VWF stretches primarily in a near-wall region in blood flow
making its adhesion possible. Our results show that VWF is a
highly optimized protein in terms of its size and internal
associations which are necessary to achieve its vital
function. A better understanding of the relevant mechanisms
for VWF behavior in microcirculation provides a further step
toward the elucidation of the role of mutations in various
VWF-related diseases.},
cin = {ICS-2 / JARA-HPC},
ddc = {000},
cid = {I:(DE-Juel1)ICS-2-20110106 / $I:(DE-82)080012_20140620$},
pnm = {553 - Physical Basis of Diseases (POF3-553) / Margination
and Adhesion of Particles and Cells in Blood Flow
$(jiff44_20140501)$},
pid = {G:(DE-HGF)POF3-553 / $G:(DE-Juel1)jiff44_20140501$},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29079767},
UT = {WOS:000413907000101},
doi = {10.1038/s41598-017-14346-4},
url = {https://juser.fz-juelich.de/record/838893},
}