Inhibitory postsynaptic current in voltage-clamped crayfish muscle

Nature ◽  
1976 ◽  
Vol 263 (5573) ◽  
pp. 153-154 ◽  
Author(s):  
K. ONODERA ◽  
A. TAKEUCHI
Keyword(s):  
Crayfish Muscle ◽  
Inhibitory Postsynaptic Current

Single synaptic channels recorded at glutamate sensitive patches on a crayfish muscle

1983 ◽  
Vol 42 (1) ◽  
pp. 7-12 ◽  
Author(s):  
C. Franke ◽  
J. Dudel ◽  
W. Finger
Keyword(s):  
Crayfish Muscle

Role of local Ca2+ domains in activation of Ca(2+)-induced Ca2+ release in crayfish muscle fibers

1993 ◽  
Vol 264 (6) ◽  
pp. C1505-C1512 ◽  
Author(s):  
S. Gyorke ◽  
P. Palade
Keyword(s):  
Sarcoplasmic Reticulum ◽  
Cardiac Muscle ◽  
Binding Site ◽  
Equal Access ◽  
Crayfish Muscle ◽  
Simultaneous Measurements ◽  
Indicator Analysis ◽  
Dependent Processes ◽  
Ca2 Channels

Simultaneous measurements were made of crayfish muscle Ca2+ currents (ICa) and the intracellular Ca2+ transients they elicit due to Ca(2+)-induced Ca2+ release (CICR) from the sarcoplasmic reticulum (SR). Ca2+ concentration ([Ca2+]) elevations produced by Ca2+ entry via ICa were much more effective in triggering CICR than were ongoing release or homogeneous elevations of Ca2+ produced by photolysis of caged Ca2+. This suggests that [Ca2+] gradients exist when Ca2+ is elevated by ICa and that, during Ca2+ entry, [Ca2+] at the activation site of the release channels must be much greater than spatially averaged [Ca2+] reported by the indicator. Analysis of voltage dependencies of ICa inactivation and SR Ca2+ release suggest that both Ca(2+)-dependent processes are controlled by ICa via the nearest T tubule Ca2+ channel rather than by total ICa entry. The contribution of SR Ca2+ release to ICa inactivation studied with a two-pulse protocol was less than predicted if Ca2+ derived from SR Ca2+ release and from T tubule Ca2+ channels have equal access to the Ca2+ binding site controlling ICa inactivation. These results can be explained in terms of a scheme where sites for release activation and ICa inactivation are located in the same junctional gap subdomain, closer to the cytoplasmic mouth of the T tubule Ca2+ channel than to the cytoplasmic mouth of the SR Ca2+ release channels. Such a scheme could provide an explanation for the graded nature and selective control of CICR in this preparation as well as in vertebrate cardiac muscle.

Crayfish Muscle: Permeability to Sodium Induced by Calcium Depletion

Science ◽  
1967 ◽  
Vol 155 (3767) ◽  
pp. 1263-1266 ◽  
Author(s):  
J. P. Reuben ◽  
P. W. Brandt ◽  
L. Girardier ◽  
H. Grundfest
Keyword(s):  
Calcium Depletion ◽  
Crayfish Muscle

scholarly journals The Triple Innervation of the Crayfish Muscle

1936 ◽  
Vol 22 (11) ◽  
pp. 667-667 ◽  
Author(s):  
A. van Harreveld ◽  
C. A. G. Wiersma
Keyword(s):  
Crayfish Muscle

THE EFFECTS OF VARIOUS IONS ON THE SARCOPLASMIC RETICULUM OF CRAYFISH MUSCLE

1962 ◽  
pp. TT-6
Author(s):  
P.W. Brandt ◽  
A.M. Frank ◽  
L. Girardier ◽  
J. Reuben
Keyword(s):  
Sarcoplasmic Reticulum ◽  
Crayfish Muscle
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