[Effect of disruption of chloride conductance on the development of denervation changes in muscle fiber membranes of the rat].
A decrease in resting MP, increase in the input resistance, appearance of anode breakdown APs, and extrajunctional acetylcholine sensitivity following denervation were revealed in the rat diaphragm muscle fibres. Addition of 1 X 10(-4) M furosemide to the culture medium reduced the degree of post-denervation muscle membrane depolarization and of extrajunctional acetylcholine sensitivity, but did not prevent the changes in passive electrical properties and in firing level of the muscle fibre membrane. Chloride ions could serve as intracellular messengers responsible for the neurotrophic control of muscle membrane resting potential and membrane sensitivity to acetylcholine. The Cl- are not essential in neurotrophic regulation of the electrogenic properties of membrane.
D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D002712:Chlorides / Q000378:metabolism*; D003964:Diaphragm / Q000294:innervation; D004553:Electric Conductivity; D005665:Furosemide / Q000494:pharmacology; D007473:Ion Channels / Q000502:physiology*; D008564:Membrane Potentials; D009121:Muscle Denervation; D009132:Muscles / Q000294:innervation*; D051381:Rats
D002712:Chlorides; D007473:Ion Channels; D005665:Furosemide; D000109:Acetylcholine
Vliianie narusheniia khlornoĭ provodimosti na razvitie denervatsionnykh izmeneniĭ membrany myshechnogo volokna krysy.