The effects of γ-aminobutyric acid and picrotoxin on the junctional potential and the contraction of crayfish muscle

1959 ◽  
Vol 15 (1) ◽  
pp. 35-36 ◽  
Author(s):  
W. G. Van der Kloot ◽  
J. Robbins
Keyword(s):  
Aminobutyric Acid ◽  
Crayfish Muscle ◽  
Junctional Potential

Iontophoretic Application of Gamma-Aminobutyric Acid on Crayfish Muscle

Nature ◽  
1964 ◽  
Vol 203 (4949) ◽  
pp. 1074-1075 ◽  
Author(s):  
AKIRA TAKEUCHI ◽  
NORIKO TAKEUCHI
Keyword(s):  
Aminobutyric Acid ◽  
Gamma Aminobutyric Acid ◽  
Crayfish Muscle ◽  
Iontophoretic Application

Properties of γ-Aminobutyric Acid Receptor/Ionophore Proteins from Crayfish Muscle

1977 ◽  
Vol 5 (4) ◽  
pp. 863-866 ◽  
Author(s):  
RICHARD W. OLSEN ◽  
BRAD MEINERS ◽  
PAT KEHOE ◽  
MAHARAJ K. TICKU
Keyword(s):  
Aminobutyric Acid ◽  
Acid Receptor ◽  
Crayfish Muscle

?-AMINOBUTYRIC ACID RECEPTOR BINDING and UPTAKE IN MEMBRANE FRACTIONS OF CRAYFISH MUSCLE

1979 ◽  
Vol 32 (3) ◽  
pp. 979-990 ◽  
Author(s):  
B. M. Meiners ◽  
P. Kehoe ◽  
D. M. Shaner ◽  
R. W. Olsen
Keyword(s):  
Receptor Binding ◽  
Aminobutyric Acid ◽  
Acid Receptor ◽  
Crayfish Muscle

Effects of high calcium solutions on glutamate sensitivity of crayfish muscle fibres

1980 ◽  
Vol 209 (1176) ◽  
pp. 415-429 ◽  
Keyword(s):  
Nerve Terminal ◽  
Aminobutyric Acid ◽  
Inhibitory Synapses ◽  
Muscle Fibres ◽  
Nerve Terminals ◽  
Direct Stimulation ◽  
Calcium Spikes ◽  
Crayfish Muscle ◽  
High Calcium ◽  
Denervated Muscles

Crayfish neuromuscular preparations were studied after 18-36 h exposure to high calcium solutions. As previously reported for frog neuromuscular preparations the treatment damaged the nerve terminals and decreased junctional potentials. The resting potentials and input resistances of the muscle fibres were not affected; but their sensitivity to glutamate was significantly decreased when compared to that of control muscles. After exposure to high calcium, the sensitivity to γ-aminobutyric acid, the putative transmitter at inhibitory synapses, was increased. Apparently normal twitches were elicited by direct stimulation, and calcium spikes could still be observed in the fibres. A decreased sensitivity to glutamate was also noted in experiments carried out on denervated muscles 8 months after section of the motor axons. Possible relations between nerve terminal damage and the decrease in sensitivity to glutamate are discussed.

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