The Dynamics of Adaptive Changes in the Spleen of the Hibernating Ground Squirrel Spermophilus undulatus

摘要: In hibernation season during torpor bouts, the spleen weight and hemoglobin level, as well total extracted protein contents in of ground squirrel Spermophilus undulatus are increased when animals enter reach maximum values body temperature drops below 25°C. All these parameters return to characteristic euthermic arousal, before increases 20°C. There were no significant differences numbers splenocytes between squirrels interbout euthermia torpor. The minimum number was observed that entered core approximately 18°C. activity ornithine decarboxylase, a key enzyme polyamine synthesis, which is correlated with functional proliferative status lymphoid tissue, same for summer decreased monotonically Upon arousal 29°C, resumption decarboxylase observed.