1967
DOI: 10.1002/jez.1401660310
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Relation of resting potential of rat gastrocnemius and soleus muscles to innervation, activity, and the Na‐K pump

Abstract: The effect of nerve on resting membrane potential of rat muscle was studied. Denervation produces a decline from 83.5mV in gastrocnemius and from 68.8 mV in soleus to a range of 60 mV. The rate of decline is more rapid with distal than with proximal nerve section. With reinnervation, potential returns to normal. Immobilization, posterior rhizotomy or spinal section produces a decline in gastrocnemius membrane potential to about 70 mV indicating that integrity of ventral root does not prevent a fall. Independen… Show more

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Cited by 82 publications
(52 citation statements)
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“…Earlier experiments had revealed a difficulty in that intraperitoneal injection of this drug in an effective dose caused a progressive depolarization of muscle fibres (cf. Locke & Solomon, 1967) and eventually a loss of excitability. Under these conditions repetitive stimulation would have had uncertain effects on the muscle since an increasing proportion of the fibres would have become unresponsive.…”
Section: Effects Of Ouabainmentioning
confidence: 99%
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“…Earlier experiments had revealed a difficulty in that intraperitoneal injection of this drug in an effective dose caused a progressive depolarization of muscle fibres (cf. Locke & Solomon, 1967) and eventually a loss of excitability. Under these conditions repetitive stimulation would have had uncertain effects on the muscle since an increasing proportion of the fibres would have become unresponsive.…”
Section: Effects Of Ouabainmentioning
confidence: 99%
“…One explanation for this early enhancement of the M-wave would be that the resting and action potentials of individual muscle fibres increase during muscle activity but this suggestion has not been supported by the results of previous studies in animal muscles. Thus, it has been a general finding that the resting and action potentials of mammalian skeletal muscle fibres decrease following repetitive A. HICKS AND A. J. McCOMAS stimulation (for example, Locke & Solomon, 1967;Hanson, 1974;Juel, 1986), presumably as a result of the rise in interstitial [K+] associated with impulse activity (Hnik, Holas, Krekule, Kriz, Mejsnar, Smiesko, Ujec & Vyskocil, 1976;Juel, 1986). These results are not conclusive, however, since most of the animal experiments have been conducted in vitro, using bathing media likely to cause partial depolarization of muscle fibres with a concomitant rise in intracellular tNa+] (Creese & Northover, 1961;Kernan, 1963).…”
Section: Introductionmentioning
confidence: 99%
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“…Denervation of skeletal muscle increases ACHR levels and sensitivity to acetylcl~oline in all species studied 1231, ACHE levels in at least the chicken and rabbit [24,25] and RNA synthesis in the frog [26]. Ouabain depolarizes skeletal muscle to the same extent as denervation [27] and does not produce any further depolarization of denervated muscle [28,29].…”
Section: Discussionmentioning
confidence: 99%
“…Clausen & Flatman, 1977;Marunaka, 1986). A decrease in the contribution of this rheogenic pump to the resting potential has been suggested as an explanation for the 15-20 mV depolarization of muscle fibres seen after surgical denervation (Locke & Solomon, 1967;Bray, Hawken, Hubbard, Pockett & Wilson, 1976). On theoretical grounds alone (Thomas, 1972), it is most unlikely that an electrogenic pump current could account for 20 mV of an Em (membrane potential) of -80 mV.…”
Section: Introductionmentioning
confidence: 99%