Results 161 to 170 of about 2,580,489 (207)
The fast-twitch muscle calsequestrin isoform predominates in rabbit slow-twitch soleus muscle [PDF]
FEBS Letters, 1989 The major form of calsequestrin in rabbit slow-twitch soleus muscle is shown to be identical to that isolated and cloned from rabbit fast-twitch muscle on the following bases: identity of cDNAs cloned from mRNAs from the two muscle sources; equivalent ...
Larry Fliegel +2 more
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Adaptation of fibers in fast-twitch muscles of rats to spaceflight and hindlimb suspension
Journal of Applied Physiology, 1992The adaptation of single fibers in medial gastrocnemius (MG), a fast-twitch extensor, and tibialis anterior (TA), a fast-twitch flexor, was studied after 14 days of spaceflight (COSMOS 2044) or hindlimb suspension. Cross-sectional area (CSA) and succinate dehydrogenase (SDH), alpha-glycerophosphate dehydrogenase (GPD), and myofibrillar ...
B, Jiang +6 more
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Glucocorticoid-induced muscle atrophy prevention by exercise in fast-twitch fibers
Journal of Applied Physiology, 1990Exercise has been shown to be effective in preventing glucocorticoid-induced atrophy in muscles containing high proportions of type II or fast-twitch fibers. This investigation was undertaken to further evaluate this response in type IIa and IIb fibers, determined by histochemical staining for myofibrillar adenosinetriphosphatase with alkaline and ...
M T, Falduto +2 more
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Fine structure of fast‐twitch and slow‐twitch guinea pig muscle fibers
Journal of Morphology, 1973AbstractThe guinea pig soleus muscle is a convenient model for the study of slow‐twitch intermediate (STI) fiber ultrastructure because it is composed entirely of fibers of this class. Such fibers were compared with fast‐twitch red (FTR) and fast‐twitch white (FTW) fibers from the vastus lateralis muscle.FTW fibers are characterized by small, sparse ...
R J, Tomanek +3 more
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Myosin polymorphism in single fibers of chronically stimulated rabbit fast-twitch muscle
Pfl�gers Archiv European Journal of Physiology, 1987Rabbit tibialis anterior (TA) muscles were indirectly stimulated (10 Hz, 24 h/d) for 30 d and 60 d and single fibers were analysed using a combined histochemical and biochemical technique (Staron and Pette 1986, 1987a, b). After 30 d of chronic stimulation there was a pronounced increase in the normally rare (0.5%) C fiber population (i.e., fibers ...
R S, Staron, B, Gohlsch, D, Pette
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Fiber transformation and replacement in low-frequency stimulated rabbit fast-twitch muscles
Cell and Tissue Research, 1996The fast-to-slow conversion of rabbit skeletal muscles by chronic low-frequency (10 Hz, 12 h daily) stimulation involves (1) sequential fast-to-slow fiber-type transitions in the order of type IID-->type IIA-->type I, and (2) the replacement of deteriorating fast-twitch glycolytic fibers by new fibers derived from satellite cells and myotubes.
M, Schuler, D, Pette
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Calcium transients in single fibers of low-frequency stimulated fast-twitch muscle of rat
American Journal of Physiology-Cell Physiology, 1999Ca2+transients were investigated in single fibers isolated from rat extensor digitorum longus muscles exposed to chronic low-frequency stimulation for different time periods up to 10 days. Approximately 2.5-fold increases in resting Ca2+ concentration ([Ca2+]) were observed 2 h after stimulation onset and persisted throughout the stimulation period ...
S, Carroll, P, Nicotera, D, Pette
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Velocity of shortening and myosin isozymes in two types of rabbit fast-twitch muscle fibers
American Journal of Physiology-Cell Physiology, 1986The fast-twitch tibialis anterior muscle of the rabbit was stimulated (10 Hz, 8 h/day for 7 wk) to cause complete transformation of the fibers from type IIb to type IIa. The velocity of unloaded shortening of permeabilized single fiber segments dissected from control and chronically stimulated tibialis anterior muscles was measured by the slack test ...
H L, Sweeney +4 more
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Histochemistry, 1988
This study was designed to assess the changes in fiber-type distribution of the extensor digitorum longus (EDL) muscle of the mouse during the first 21 days of age following neonatal sciatic neurectomy. Denervated and normal muscles were compared at 7, 14, and 21 days of age and the normal EDL was also studied at 1 day of age.
D M, Redenbach +2 more
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This study was designed to assess the changes in fiber-type distribution of the extensor digitorum longus (EDL) muscle of the mouse during the first 21 days of age following neonatal sciatic neurectomy. Denervated and normal muscles were compared at 7, 14, and 21 days of age and the normal EDL was also studied at 1 day of age.
D M, Redenbach +2 more
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Size and metabolic properties of fibers in rat fast-twitch muscles after hindlimb suspension
Journal of Applied Physiology, 1987Hindlimb suspension (HS) results in whole muscle atrophic and metabolic changes that vary in magnitude in different hindlimb muscles. The present study was designed to investigate these effects in single fibers. Fiber type and size and the activities of two metabolic marker enzymes were determined in a deep (close to the bone) and a superficial (away ...
R R, Roy +3 more
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