Possible Interaction: Dietary Fiber and Potassium

“Experiments with the fibre optic sensor showed a decrease in the fluorescence of 57% with increasing potassium concentration (0-5 mM) at pH 7.45.”

“When high potassium solution was applied transiently to the muscle fibres at low temperature in the presence of D600, the fibres became paralysed and, concomitantly, charge movement disappeared.”

“A significant decrease in the mechanical response upon depolarisation (induced either by potassium or electrical stimulation) could be recorded on the 4th day after the isolation of fibres.”

“On the other hand, tonic fibres showed a lower threshold of the potassium induced tension as well as a lower K+ concentration for maximal activation.”

“… potassium contracture the … both fibre types was shortened by 25-30% of the rest-length, the diameter of the slow fibres increased to 180-185 A, the diameter … 200-220 A. The amount of subunits increased to 14-15 in slow fibres and to 17-18 in intermediate fibres.”

“In various Acrididae (Hagiwara & Watanabe, 1954; Hoyle, 1953, 1955a, b) and in the cockroach (Wilson, 1954; Hoyle, 1955a), an increase in the external potassium concentration results in a depolarization of the resting membrane of the muscle fibres.”