[Effect of cold adaptation on the transmission of excitation in a myoneural synapse].
In cold-adapted rats, synaptic excitability of single muscle fibers of fast (m. gastrocneiraus ) and slow (m. soleus) muscles as well as lability of their synapses were studied with the intracellular recording of APs. A decrease of thresholds of the synaptic excitability both in fast and in slow muscle fibers was found in cold-adapted rats. The lability of neuromuscular synapses in both types of muscles was also higher in the cold-adapted rats than in the control group. Cold adaptation seems to induce changes of synaptic transmission of excitation in fast and slow muscle fibers which reduces their excitability difference.
D000200:Action Potentials; D000222:Adaptation, Physiological; D000818:Animals; D003080:Cold Temperature; D004558:Electric Stimulation; D005260:Female; D009132:Muscles / Q000502:physiology; D009469:Neuromuscular Junction / Q000502:physiology*; D051381:Rats; D013569:Synapses / Q000502:physiology*; D009435:Synaptic Transmission; D013997:Time Factors
Vliianie kholodovoĭ adaptatsii na peredachu vozbuzhdeniia v mionevral'nom sinapse.