Results 211 to 220 of about 19,057 (240)
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Subgrouping of fast twitch fibres in skeletal muscles of man
Histochemistry, 1978Subgroups of fast twitch (FT) muscle fibres were identified by histochemical techniques on muscle samples of m. quadriceps femoris from six male and six female subjects, who had been assigned to three groups; untrained, active and well trained (endurance runners).
G, Sjøgaard +3 more
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The effect of hypothyroidism on sarcoplasmic reticulum in fast-twitch muscle of the rat
Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, 1985The effects of hypothyroidism on the Ca2+-transport capabilities of fast-twitch muscle (m. gastrocnemius) of the rat were studied in whole-muscle homogenate and isolated sarcoplasmic reticulum. Hypothyroidism did not affect the percentage recovery and the vesicle composition of the sarcoplasmic reticulum fraction, the total lipid and phospholipid-to ...
W S, Simonides, C, van Hardeveld
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Junctional feet and particles in the triads of a fast-twitch muscle fibre
Journal of Muscle Research and Cell Motility, 1983Structural details of junctional feet in triads of fish muscle are described. These feet have a less dense central core and contact both sarcoplasmic reticulum and T-tubule membranes at tetragonally disposed sites. The distribution of intramembraneous particles differs at the junctional T-membrane, and the junction is asymmetric.
C, Franzini-Armstrong, G, Nunzi
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Effect of creatine manipulation on fast‐twitch skeletal muscle of the mouse
Clinical and Experimental Pharmacology and Physiology, 2002Summary1. The effect of short‐term, reversible alteration of muscle total creatine content (Crtot) on force development was sought in fast‐twitch extensor digitorum longus (EDL) muscles of female mice.2. Three in vivo interventions were investigated: 1% creatine‐supplementation, treatment with the creatine‐uptake inhibitor β‐guanidino propionic acid (β‐
Dean M, Robinson, Denis S, Loiselle
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Ultrastructure of an iguana fast twitch denervated muscle.
Acta cientifica venezolana, 1994This ultrastructural study was undertaken to investigate the morphological changes which occur in the fast twitch gastrocnemius muscle of the reptile Iguana iguana after nerve section. It was found that initial degenerative alterations appeared in muscle fibers two weeks after denervation and progressed along the two months of the investigative period.
E, Velasco, H J, Finol, A, Márquez
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International Journal of Biochemistry, 1979
Abstract 1. 1. Proteins of mitochondria isolated from rabbit slow-twitch oxidative muscle (m. soleus), fast-twitch-glycolytic muscle (m. psoas) and fast-twitch-glycolytic-oxidative muscle (m. gastrocnemius) were subjected to isoelectrofocusing and subsequent sodium dodecyl sulphate gel electrophoresis. 2. 2.
O, Takács +3 more
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Abstract 1. 1. Proteins of mitochondria isolated from rabbit slow-twitch oxidative muscle (m. soleus), fast-twitch-glycolytic muscle (m. psoas) and fast-twitch-glycolytic-oxidative muscle (m. gastrocnemius) were subjected to isoelectrofocusing and subsequent sodium dodecyl sulphate gel electrophoresis. 2. 2.
O, Takács +3 more
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Nitric oxide contributes to vascular smooth muscle relaxation in contracting fast-twitch muscles
Physiological Genomics, 2001During skeletal muscle contraction, NO derived from neuronal nitric oxide synthase (nNOS) in skeletal muscle fibers or from endothelial cells (eNOS) may relax vascular smooth muscle contributing to functional hyperemia. To examine the relative importance of these pathways, smooth muscle myosin regulatory light chain (smRLC) phosphorylation was assessed
R W, Grange +5 more
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Fast-twitch muscle unit properties in different rat medial gastrocnemius muscle compartments
Journal of Neurophysiology, 19961. The effect of muscle unit (MU) localization on physiological properties was investigated within the fast-twitch fatigue-resistant (FR) and fast-fatigable (FF) MU populations of rat medial gastrocnemius (MG) muscle. Single MG MUs were functionally isolated by microdissection of the ventral roots.
De Ruiter, C. J. +2 more
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Exercise selectively increases G4 AChe activity in fast-twitch muscle
Journal of Applied Physiology, 1988Acetylcholinesterase (AChe) molecular forms were studied in hindlimb skeletal muscles from adult male Fischer 344 rats subjected to treadmill exercise for periods ranging between 1 and 30 days. Groups of three animals were exercised for 1 h/day at a treadmill speed of 8.5 m/min, with 1-min sprints at 15 m/min every 10 min.
H L, Fernandez, J A, Donoso
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Crotamine inhibits preferentially fast-twitching muscles but is inactive on sodium channels
Toxicon, 2007Crotamine is a peptide toxin from the venom of the rattlesnake Crotalus durissus terrificus that induces a typical hind-limb paralysis of unknown nature. Hind limbs have a predominance of fast-twitching muscles that bear a higher density of sodium channels believed until now to be the primary target of crotamine.
Carina T, Rizzi +5 more
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