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  • Title: [Thermoregulation characteristics of rats exposed to cold in the early postnatal period].
    Author: Seliatitskaia VG, Moshkin MP, Romashov NA, Arshinova TV, Salganik RI.
    Journal: Biull Eksp Biol Med; 1984 Sep; 98(9):356-9. PubMed ID: 6487796.
    Abstract:
    Cold adaptation of adult rats (at 4-5 degrees C for 7 weeks) increased their ability to respond to noradrenaline by the rise of body temperature and heat radiation, led to an almost 2-fold increase in the relative brown fat mass (BFM). Adult rats which experienced "cold imprinting" (from the first to the seventh day after birth, 15 min at 4-5 degrees C) showed a far less increment of the BFM on cold adaptation, no additional rise of body temperature and heat radiation in response to noradrenaline. In cold-imprinted rats, the relative surface of the tail and the body surface heat radiation transfer conefficient were found to be reduced. This attests to stable adaptive changes in physical thermoregulation, directed toward increase in animals' heat insulation.
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