[Seasonal variability in the cholinergic reaction of the frog heart].
Seasonal changes in sensitivity to acetylcholine were studied on the isolated frog ventricle. The highest sensitivity was observed in autumn and winter (November-January). In spring, from the period of reproduction, the sensitivity to acetylcholine drops to-threefold and remains at a low level until September. Seasonal changes were more obvious in females. The observed seasonal changes are discussed with reference to ecology, state of reproductive system, etc.
Boĭko
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OV
Danilova
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VI
Nistramova
S N
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D000109:Acetylcholine / Q000502:physiology; D000818:Animals; D006321:Heart / Q000502:physiology*; D011896:Rana temporaria; D011950:Receptors, Cholinergic / Q000502:physiology*; D012621:Seasons
D011950:Receptors, Cholinergic; D000109:Acetylcholine
Sezonnaia izmenchivost' kholinergicheskoĭ reaktsii serdtsa liagushki.