title: [Cerebral synaptosome ATPase activity in Citellus erythrogenys susliks during periods of wakefulness and hibernation].
abstract: The activity of synaptosomal Mg- and Na, K-ATPases has been compared during natural hibernation and active periods in ground squirrels. Being assayed in vitro at temperature 37 degrees, the activity of Na, K-ATPase decreases during hibernation by 25%, that of Mg-ATPase--by 37%. The decreased level of the activity of these enzymic systems may result from structural alterations in the brain membranes during hibernation of the animals.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D001921:Brain / Q000201:enzymology / Q000648:ultrastructure*; D006605:Hibernation; D008274:Magnesium; D011188:Potassium; D012377:Rodentia / Q000378:metabolism*; D012589:Sciuridae / Q000378:metabolism*; D012964:Sodium; D013574:Synaptosomes / Q000201:enzymology*
chemical_list: D012964:Sodium; D000251:Adenosine Triphosphatases; D008274:Magnesium; D011188:Potassium
vernacular_title: Aktivnost' ATFaz sinaptosom mozga suslikov Citellus erythrogenys v periody bodrstvovaniia i zimneĭ spiachki.