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@ARTICLE{Elgeti:10889,
author = {Elgeti, J. and Kaupp, U. B. and Gompper, G.},
title = {{H}ydrodynamics of {S}perm {C}ells near {S}urfaces},
journal = {Biophysical journal},
volume = {99},
issn = {0006-3495},
address = {New York, NY},
publisher = {Rockefeller Univ. Press},
reportid = {PreJuSER-10889},
pages = {1018 - 1026},
year = {2010},
note = {Record converted from VDB: 12.11.2012},
abstract = {Sperm are propelled by an actively beating tail, and
display a wide variety of swimming patterns. When confined
between two parallel walls, sperm swim either in circles or
on curvilinear trajectories close to the walls. We employ
mesoscale hydrodynamics simulations in combination with a
mechanical sperm model to study the swimming behavior near
walls. The simulations show that sperm become captured at
the wall due to the hydrodynamic flow fields which are
generated by the flagellar beat. The circular trajectories
are determined by the chiral asymmetry of the sperm shape.
For strong (weak) chirality, sperm swim in tight (wide)
circles, with the beating plane of the flagellum oriented
perpendicular (parallel) to the wall. For comparison, we
also perform simulations based on a local anisotropic
friction of the flagellum. In this resistive force
approximation, surface adhesion and circular swimming
patterns are obtained as well. However, the adhesion
mechanism is now due to steric repulsion, and the
orientation of the beating plane is different. Our model
provides a theoretical framework that explains several
distinct swimming behaviors of sperm near and far from a
wall. Moreover, the model suggests a mechanism by which
sperm navigate in a chemical gradient via a change of their
shape.},
keywords = {Animals / Anisotropy / Biomechanics: physiology / Cell
Adhesion: physiology / Elasticity / Friction / Male /
Models, Biological / Rotation / Sperm Motility: physiology /
Sperm Tail: physiology / Spermatozoa: cytology /
Spermatozoa: physiology / Surface Properties / J (WoSType)},
cin = {IFF-2 / IAS-2},
ddc = {570},
cid = {I:(DE-Juel1)VDB782 / I:(DE-Juel1)IAS-2-20090406},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK505},
shelfmark = {Biophysics},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:20712984},
pmc = {pmc:PMC2920720},
UT = {WOS:000281103200004},
doi = {10.1016/j.bpj.2010.05.015},
url = {https://juser.fz-juelich.de/record/10889},
}