Results 251 to 260 of about 2,710,339 (310)
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American Journal of Physiology-Legacy Content, 1958
Penetration of sucrose into the muscle fibers of the frog's stomach is inferred from the observation that muscles swell in isosmotic sucrose solution and that sucrose space is consistently, on the average by 34%, larger than inulin space. In solutions of low electrolyte concentration water uptake and loss are strongly influenced by the presence of ...
Emil Bozler, Daniel Lavine
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Penetration of sucrose into the muscle fibers of the frog's stomach is inferred from the observation that muscles swell in isosmotic sucrose solution and that sucrose space is consistently, on the average by 34%, larger than inulin space. In solutions of low electrolyte concentration water uptake and loss are strongly influenced by the presence of ...
Emil Bozler, Daniel Lavine
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Smooth muscle and NMR review: An overview of smooth muscle metabolism
Molecular and Cellular Biochemistry, 2003Nuclear magnetic resonance (NMR) is a non-invasive technique which allows us to examine the biochemical, physiological and metabolic events occurring inside living tissue; such as vascular and other smooth muscles. It has been found that the smooth muscle metabolism is compartmented such that mitochondrial function fuels contraction and that much ...
Joseph F. Clark, Shinsuke Nakayama
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Regulation of differentiation of vascular smooth muscle cells.
Physiological Reviews, 1995The vascular smooth muscle cell (SMC) in mature animals is a highly specialized cell whose principal function is contraction. The fully differentiated or mature SMC proliferates at an extremely low rate and is a cell almost completely geared for ...
G. Owens
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2012
This chapter considers the different types of smooth muscle and how they generate force. Smooth muscle is classified as tonic or phasic and exhibits various patterns of electrical and mechanical activities. Some have electromechanical coupling, others pharmacomechanical coupling.
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This chapter considers the different types of smooth muscle and how they generate force. Smooth muscle is classified as tonic or phasic and exhibits various patterns of electrical and mechanical activities. Some have electromechanical coupling, others pharmacomechanical coupling.
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Regulation of Smooth Muscle Actomyosin
Annual Review of Physiology, 1981In smooth muscle it is generally accepted that at the level of the contractile apparatus regulation is achieved by activating a dormant state in the presence of Ca<sup>2+</sup>. This event initiates the contractile process which is manifest by an increased cross-bridge cycling rate and the development of tension, or in biochemical terms, by
U. Mrwa, David J. Hartshorne
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NFAT Regulation in Smooth Muscle
Trends in Cardiovascular Medicine, 2003First identified in activated T cells, the calcium (Ca2+)-dependent transcription factor, nuclear factor of activated T cells (NFAT), has since been shown to play a role in nonimmune cells, including cells of the cardiovascular system. In arterial smooth muscle, the diverse array of calcium-signaling modalities, the functional interplay between smooth ...
Nelson, Mark +4 more
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Evidence that unphosphorylated smooth muscle myosin supports smooth muscle contraction
Biochemical and Biophysical Research Communications, 1991Unphosphorylated smooth muscle myosin filaments do not disassemble in MgATP, provided that the solution is supplemented either by 25% serum albumin or by 6% polyethylene glycol 6000. These filaments are able to support actomyosin retraction but their ATPase activity is not activated by tropomyosin-decorated F-actin.
Enrico Grazi, Giorgio Trombetta
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Clinics in Chest Medicine, 1986
Contraction of tracheal smooth muscle requires the binding of Ca2+ to calmodulin, which then binds to and activates MLCK. The Ca2+-calmodulin-MLCK complex catalyzes the phosphorylation of myosin, which causes contraction by stimulating actin-activated Mg2+-ATPase activity of myosin.
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Contraction of tracheal smooth muscle requires the binding of Ca2+ to calmodulin, which then binds to and activates MLCK. The Ca2+-calmodulin-MLCK complex catalyzes the phosphorylation of myosin, which causes contraction by stimulating actin-activated Mg2+-ATPase activity of myosin.
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Halothane Increases Smooth Muscle Protein Phosphatase in Airway Smooth Muscle
Anesthesiology, 2001Background Halothane relaxes airway smooth muscle, in part, by decreasing the force produced for a given intracellular [Ca(2+)] (i.e., Ca(2+) sensitivity) during muscarinic stimulation, an effect produced by a decrease in regulatory myosin light-chain (rMLC) phosphorylation.
Keith A. Jones +3 more
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[7] Smooth muscle mitochondria
1979Publisher Summary In contrast with other tissues, such as liver and heart, where the mitochondria are particularly abundant, the bulk of smooth muscle tissue consists of myofibrils and connective tissue with relatively few mitochondria. This and the fact that large amounts of smooth muscle are difficult to obtain routinely have resulted in only a few
B Sloane +3 more
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