Identification of a pre-hibernating state in myocardium from nonhibernating chipmunks
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During the hibermating season, the amplitude of the cardiac action potential plateau of nonhibernating chipmunks was reduced. Replacing external Ca by Sr inhibited the electromechanical responses of these preparations. Similar properties were observed in hibernating animal preparations, suggesting that changes in cardiac function are already triggered before hibernation begins.
Key wordsPre-hibernating state hibernating and nonhibernating seasons chipmunks myocardium strontium plateau potential
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- 6.Statistical analysis was performed by t-test, and p values of more than 0.05 were considered to indicate no significant difference. Values are mean±SE.Google Scholar