|
|
||||||||
REVIEW
Department of Physiology and Biophysics and Center for Cardiovascular Research, College of Medicine, University of Illinois at Chicago, Illinois solarorj{at}uic.edu
Molecular motors housed in myosins of the thick filament react with thin-filament actins and promote force and shortening in the sarcomeres. However, other actions of these motors sustain sarcomeric activation by cooperative feedback mechanisms in which the actin-myosin interaction promotes thin-filament activation. Mechanical feedback also affects the actin-myosin interaction. We discuss current concepts of how these relatively under-appreciated actions of molecular motors are responsible for modulation of the ejection time and isovolumic relaxation in the beating heart.
This article has been cited by other articles:
![]() |
R. J. Solaro Multiplex Kinase Signaling Modifies Cardiac Function at the Level of Sarcomeric Proteins J. Biol. Chem., October 3, 2008; 283(40): 26829 - 26833. [Full Text] [PDF] |
||||
![]() |
K. B. Campbell, A. M. Simpson, S. G. Campbell, H. L. Granzier, and B. K. Slinker Dynamic left ventricular elastance: a model for integrating cardiac muscle contraction into ventricular pressure-volume relationships J Appl Physiol, April 1, 2008; 104(4): 958 - 975. [Abstract] [Full Text] [PDF] |
||||
![]() |
B. Iorga, N. Blaudeck, J. Solzin, A. Neulen, I. Stehle, A. J. L. Davila, G. Pfitzer, and R. Stehle Lys184 deletion in troponin I impairs relaxation kinetics and induces hypercontractility in murine cardiac myofibrils Cardiovasc Res, March 1, 2008; 77(4): 676 - 686. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Cammarato, C. M. Dambacher, A. F. Knowles, W. A. Kronert, R. Bodmer, K. Ocorr, and S. I. Bernstein Myosin Transducer Mutations Differentially Affect Motor Function, Myofibril Structure, and the Performance of Skeletal and Cardiac Muscles Mol. Biol. Cell, February 1, 2008; 19(2): 553 - 562. [Abstract] [Full Text] [PDF] |
||||
![]() |
K. S. McDonald Regulation of cardiac muscle contraction: how paramount are the sarcomeres? Am J Physiol Regulatory Integrative Comp Physiol, September 1, 2007; 293(3): R961 - R962. [Full Text] [PDF] |
||||
![]() |
R. J. Solaro Nitroxyl effects on myocardium provide new insights into the significance of altered myofilament response to calcium in the regulation of contractility J. Physiol., May 1, 2007; 580(3): 697 - 697. [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |