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- W2008793205 abstract "Hibernation was induced in hamsters by placing them in a cold room for an extended period of time, after which the hibernating state was confirmed by marked reductions in heart rate, body temperature, and the respiratory rate. The animals were either frozen intact in liquid nitrogen, or aroused and then frozen when body temperature reached 8, 12, 16, 20, 24 or 32 °C. A metabolite profile, including glucose-related metabolites, high-energy phosphates, γ-aminobutyric acid (GABA) and cyclic nucleotides, was determined for both the cerebral cortex and cerebellum. In general, the metabolite changes in the two regions elicited by hypothermia were alike, although some differences were evident. The brains of hibernators were biochemically characterized by (1) a high concentration of energy reserves including glycogen, glucose, adenosine triphosphate, and P-creatine, (2) significantly elevated levels of lactate and GABA, and (3) near depletion of cyclic guanosine monophosphate with only a moderate depression of cyclic adenosine monophosphate. During arousal, the metabolites were restored to near normal values and there was little or no indication that the brain energy metabolism was compromised by the arousal process. The study provides certain insights into the metabolic adaptation of the brain to prolonged periods of profound hypothermia in a hibernating species." @default.
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- W2008793205 date "1989-06-01" @default.
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- W2008793205 title "Metabolism in the hamster brain during hibernation and arousal" @default.
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- W2008793205 doi "https://doi.org/10.1016/0006-8993(89)90003-6" @default.
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