[Mechanism of the functional transformation of paralyzed intercostal muscles in rats with experimental botulism].
The rest membrane potential (RMP) and action potential (AP) of muscle fibers of external and internal intercostal muscles were examined in the local form of botulism. There was a decrease in the RMP and AP magnitudes in both groups of the muscles. This decrease was coupled with a greater proportion of the fibers with a low RMP. The excitability of the muscle fibers varied biphasically; it rose in the early period of paralysis and fell in the later one. The variations found might be accounted for by dystrophy of motoneurons innervating muscles.
D000200:Action Potentials; D000818:Animals; D001906:Botulism / Q000503:physiopathology*; D007366:Intercostal Muscles / Q000503:physiopathology*; D008297:Male; D008564:Membrane Potentials; D051381:Rats
K mekhanizmu funktsional'noĭ perestroĭki paralizovannykh mexhrebernykh myshts pri éksperimental'nom botulizme u krys.