Results 171 to 180 of about 17,601 (220)

Calcium-Sensitivity Modulation of Cardiac Myofibrillar Proteins

Journal of Cardiovascular Pharmacology, 1989
Myocardial contractile force may be altered not only by changing intracellular free Ca2+ but also by increasing or decreasing the calcium responsiveness of the myofilaments. The latter effect may be due to interventions that decrease the calcium affinity of troponin C, such as intracellular acidosis or factors that act "downstream" of the calcium ...
J C, Rüegg, I, Morano
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Protein Ingestion Increases Myofibrillar Protein Synthesis after Concurrent Exercise

Medicine & Science in Sports & Exercise, 2015
We determined the effect of protein supplementation on anabolic signaling and rates of myofibrillar and mitochondrial protein synthesis after a single bout of concurrent training.Using a randomized crossover design, eight healthy males were assigned to experimental trials consisting of resistance exercise (8 × 5 leg extension, 80% 1RM) followed by ...
Camera, Donny, West, Daniel, Phillips, Stuart, Rerecich, Tracy, Stellingwerff, Trent, Hawley, John, Coffey, Vernon   +6 more
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High pressure effects on myofibrillar proteins

High Pressure Research, 2000
Abstract Myofibrillar proteins were extracted from post rigor bovine meat with a potassium phosphate/potassium chloride buffer. Viscoelastic properties of myofibrillar properties were studied in a 0.6MKCl buffer, at pH = 6, used in an oscillating mode. Enthalpy patterns were determined with a differential scanning calorimeter.
N. Chapleau, S. Jung, M. De Lamballerie-Anton   +2 more
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Myofibrillar protein pattern in experimental myotonia in rats

Journal of the Neurological Sciences, 1976
Experimental myotonia was induced in rats by long-term administration of 20,25-diazacholesterol. Electrophysiological, morphological and biochemical investigations were carried out on m. soleus, m. extensor digitorum longus and m. gastrocnemius. The effect of 20,25-diazacholesterol administration on myofibrillar proteins was studied and a significant ...
I, Niebrój-Dobosz, H, Kwieciński, A, Kamińska   +2 more
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PRESSURE‐INDUCED SOLUBILIZATION OF MYOFIBRILLAR PROTEINS

Journal of Food Science, 1976
ABSTRACT In an earlier study it was found that the application of high pressure to homogenates of meat in saline solution could increase water‐holding capacity and promote the solubilization of proteins. These studies have now been extended to myofibrils prepared from sheep semimembrano‐sus muscle. The amount of protein solubilized by
J. J. MACFARLANE, I. J. McKENZIE
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The effect of acidification on myofibrillar proteins

Meat Science, 1994
Isolated myofibrillar proteins of mutton, beef and chicken were treated with an acidulent to give various pH values and stored at 5°C for 20 h before analysing the proteins using sodium dodecylsulphate polyacrylamide gel electrophoresis. It was found that protein degradation occurred below pH 4·5, with a decrease in band intensity of all major ...
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Myofibrillar protein synthesis in young and old men

American Journal of Physiology-Endocrinology and Metabolism, 1993
We tested the hypothesis that healthy older men (> 60 yr old) have a slower rate of myofibrillar protein synthesis than young men (< 35 yr old). Myofibrillar protein synthesis was determined by the in vivo incorporation of L-[1-13C]leucine into myofibrillar proteins obtained by muscle biopsy. Subjects were eight young (21-31 yr) and eight older (
S, Welle, C, Thornton, R, Jozefowicz, M, Statt   +3 more
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Phosphorylation of cardiac myofibrillar proteins.

Recent advances in studies on cardiac structure and metabolism, 1978
The P light chain of cardiac myosin is phosphorylated and dephosphorylated by highly specific enzymes. These reactions take place in the beating rabbit heart and there is evidence that dephosphorylation of the light chain occurs during the inotropic response produced by adrenaline.
H A, Cole, N, Frearson, A J, Moir, S V, Perry, R J, Solaro   +4 more
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Magnetic fields improve the gel properties of myofibrillar proteins in low-salt myofibrillar protein emulsion systems

Food Chemistry
The effect of magnetic field on the properties of emulsified gels containing myofibrillar protein (MP-emulsified gels) with different salt concentration (0, 0.2, 0.4, 0.6 mol/L) were investigated. The results demonstrated that the magnetic field treatment (4 °C, 3.8 mT, 3 h) made the emulsion droplets smaller and more uniform.
Qianwen, Jiang, Di, Wu, Jingjiao, Jiang, Xiaoyu, Wu, Jing, Ma, Xiaopeng, Hu, Weiqing, Sun, Jiao, Liu   +7 more
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Decreased myofibrillar protein breakdown following treatment with clenbuterol

Journal of Surgical Research, 1991
Daily treatment of Fischer-344 rats for 14 days with the beta 2-adrenergic agonist, clenbuterol, increased gastrocnemius muscle mass and protein content. Coadministration with the beta-adrenergic antagonist, nadolol, significantly reduced these anabolic effects of clenbuterol.
D W, Benson, T, Foley-Nelson, W T, Chance, F S, Zhang, J H, James, J E, Fischer   +5 more
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