scholarly journals Cannabinoid signalling inhibits sarcoplasmic Ca2+release and regulates excitation-contraction coupling in mammalian skeletal muscle

2016 ◽  
Vol 594 (24) ◽  
pp. 7381-7398 ◽  
Author(s):  
Tamás Oláh ◽  
Dóra Bodnár ◽  
Adrienn Tóth ◽  
János Vincze ◽  
János Fodor ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Mammalian Skeletal Muscle ◽  
Excitation Contraction Coupling ◽  
Contraction Coupling

scholarly journals THE ULTRASTRUCTURE OF FROG VENTRICULAR CARDIAC MUSCLE AND ITS RELATIONSHIP TO MECHANISMS OF EXCITATION-CONTRACTION COUPLING

1968 ◽  
Vol 38 (1) ◽  
pp. 99-114 ◽  
Author(s):  
Nancy A. Staley ◽  
Ellis S. Benson
Keyword(s):  
Skeletal Muscle ◽  
Cardiac Muscle ◽  
Striated Muscle ◽  
Structural Features ◽  
Mammalian Skeletal Muscle ◽  
Striated Muscles ◽  
Thin Filaments ◽  
Excitation Contraction Coupling ◽  
Contraction Coupling ◽  
Dense Granules

Frog ventricular cardiac muscle has structural features which set it apart from frog and mammalian skeletal muscle and mammalian cardiac muscle. In describing these differences, our attention focused chiefly on the distribution of cellular membranes. Abundant inter cellular clefts, the absence of tranverse tubules, and the paucity of sarcotubules, together with exceedingly small cell diameters (less than 5 µ), support the suggestion that the mechanism of excitation-contraction coupling differs in these muscle cells from that now thought to be characteristic of striated muscle such as skeletal muscle and mammalian cardiac muscle. These structural dissimilarities also imply that the mechanism of relaxation in frog ventricular muscle differs from that considered typical of other striated muscles. Additional ultrastructural features of frog ventricular heart muscle include spherical electron-opaque bodies on thin filaments, inconstantly present, forming a rank across the I band about 150 mµ from the Z line, and membrane-bounded dense granules resembling neurosecretory granules. The functional significance of these features is not yet clear.

Effects of sphingosine 1-phosphate on excitation–contraction coupling in mammalian skeletal muscle

2003 ◽  
Vol 24 (8) ◽  
pp. 539-554 ◽  
Author(s):  
Chiara Bencini ◽  
Roberta Squecco ◽  
Claudia Piperio ◽  
Lucia Formigli ◽  
Elisabetta Meacci ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Mammalian Skeletal Muscle ◽  
Excitation Contraction Coupling ◽  
Contraction Coupling ◽  
Sphingosine 1 Phosphate
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