INFLUENCE OF SODIUM AND POTASSIUM IONS ON THE CONTRACTION INDUCED BY CALCIUM IONS IN GUINEA-PIG ISOLATED VAS DEFERENS

1979 ◽  
Vol 7 (1) ◽  
pp. 41-44 ◽  
Author(s):  
J. Sugimoto ◽  
K. Hanasaki ◽  
H. Shintani
Keyword(s):  
Guinea Pig ◽  
Calcium Ions ◽  
Vas Deferens ◽  
Potassium Ions ◽  
Sodium And Potassium

Binding of calcium ions to cell membrane isolated from bullfrog skeletal muscle

1964 ◽  
Vol 207 (2) ◽  
pp. 509-512 ◽  
Author(s):  
K. Koketsu ◽  
R. Kitamura ◽  
R. Tanaka
Keyword(s):  
Skeletal Muscle ◽  
Membrane Potential ◽  
Cell Membrane ◽  
Membrane Permeability ◽  
Calcium Ions ◽  
Cytoplasmic Membrane ◽  
Muscle Fibers ◽  
Potassium Ions ◽  
Chloroform Methanol ◽  
Sodium And Potassium

The membrane fragments of bullfrog skeletal muscle fibers were isolated by a modification of the method of Kono and Colowick (1961). Radiocalcium ions were bound to these isolated membrane fragments, and the binding of calcium ions was impeded by both sodium and potassium ions. The extractable portion of the isolated membrane fragments with chloroform-methanol mixture bound calcium ions whereas no appreciable binding of calcium ions was observed with the extracted residue. The results suggested that the binding of calcium ions takes place on the lipid or lipoprotein of the so-called cytoplasmic membrane which plays an important role in regulating the membrane permeability and the membrane potential.

scholarly journals The Role of Potassium Ions in the Contraction Process of Smooth Muscle in the Vas Deferens Isolated from Guinea-Pig

1973 ◽  
Vol 25 (2) ◽  
pp. 179-187
Author(s):  
Jiro Sugimoto ◽  
Kazuya Kido ◽  
Ikki Imamura ◽  
Matsusuke Gamou ◽  
Yasukazu Nishikubo ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Guinea Pig ◽  
Vas Deferens ◽  
Potassium Ions ◽  
Contraction Process

718. Renneting and the caseinate particle: a viscometric study

1958 ◽  
Vol 25 (2) ◽  
pp. 307-311 ◽  
Author(s):  
C. Sterling
Keyword(s):  
Calcium Ions ◽  
Particle Aggregation ◽  
High Dilutions ◽  
Higher Temperature ◽  
Viscometric Study ◽  
Sodium And Potassium

A viscometric study of solutions of alkaline (sodium and potassium) caseinate was made to determine the effects of renneting with and without the addition of calcium ions. There was no real viscometric effect of these treatments at high dilutions. At a higher temperature, the viscosity increment of the solutions decreased. It was suggested that particle aggregation occurs more readily at higher temperatures, leading to a greater particle symmetry as well as causing some dehydration.

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