Wave propagation in lipid monolayers.

Biophysical Journal
J GriesbauerM F Schneider

Abstract

Sound waves are excited on lipid monolayers using a set of planar electrodes aligned in parallel with the excitable medium. By measuring the frequency-dependent change in the lateral pressure, we are able to extract the sound velocity for the entire monolayer phase diagram. We demonstrate that this velocity can also be directly derived from the lipid monolayer compressibility, and consequently displays a minimum in the phase transition regime. This minimum decreases from v(0) = 170 m/s for one-component lipid monolayers down to v(m) = 50 m/s for lipid mixtures. No significant attenuation can be detected confirming an adiabatic phenomenon. Finally, our data propose a relative lateral density oscillation of Deltarho/rho approximately 2%, implying a change in all area-dependent physical properties. Order-of-magnitude estimates from static couplings therefore predict propagating changes in surface potential of 1-50 mV, 1 unit in pH (electrochemical potential), and 0.01 K in temperature, and fall within the same order of magnitude as physical changes measured during nerve pulse propagation. These results therefore strongly support the idea of propagating adiabatic sound waves along nerves as first thoroughly described by Kaufmann in...Continue Reading

References

Oct 7, 1977·Journal of Neurology·H P Ludin, F Beyeler
Jul 5, 2005·Proceedings of the National Academy of Sciences of the United States of America·Thomas Heimburg, Andrew D Jackson
Feb 20, 2007·Biophysical Journal·G H KimB M Salzberg
May 2, 2007·Proceedings of the National Academy of Sciences of the United States of America·S W SchneiderM F Schneider

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Citations

Sep 3, 2011·Nature Protocols·Yusuf TufailWilliam J Tyler
Jun 28, 2013·PloS One·Christian Fillafer, Matthias F Schneider
May 25, 2016·Scientific Reports·Bernhard FichtlMatthias F Schneider
Dec 20, 2018·Journal of Neurophysiology·Jen-Wei LinYoshio Okada
Sep 26, 2012·Physical Review Letters·J GriesbauerM F Schneider
Feb 2, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Markus Gross, Fathollah Varnik
Feb 23, 2019·Scientific Reports·Matan Mussel, Matthias F Schneider
Apr 9, 2019·Journal of the Royal Society, Interface·Matan Mussel, Matthias F Schneider
Aug 27, 2014·Physical Biology·Jerel K Mueller, William J Tyler
Mar 8, 2017·Proceedings. Mathematical, Physical, and Engineering Sciences·Alexander OleinickChristian Amatore
Sep 13, 2017·Soft Matter·M I Pérez-Camacho, J C Ruiz-Suárez
Feb 2, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J GriesbauerM F Schneider
Sep 28, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D SteppichM F Schneider
Jul 6, 2020·Journal of Colloid and Interface Science·Tanja GoršakDarko Makovec
Oct 18, 2020·Progress in Biophysics and Molecular Biology·Matthias F Schneider
Aug 30, 2020·Progress in Biophysics and Molecular Biology·Matan Mussel, Matthias F Schneider
Oct 16, 2020·Progress in Biophysics and Molecular Biology·Christian FillaferMatthias F Schneider
Apr 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·B FichtlM F Schneider

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