Role of brown adipose tissue in body temperature control during the early postnatal period in Syrian hamsters and mice
| Autor: | Shinya Matsuoka, Junnosuke Mae, Junko Nio-Kobayashi, Jussiaea Valente Bariuan, Yuko Okamatsu-Ogura, Kazuhiro Kimura, Ayumi Tsubota |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
040301 veterinary sciences Period (gene) uncoupling protein 1 model animal Adipose tissue Biology Biochemistry Body Temperature 0403 veterinary science 03 medical and health sciences Mice Adipose Tissue Brown Internal medicine Cricetinae Brown adipose tissue medicine Homeothermy Animals Syrian hamsters 030304 developmental biology 0303 health sciences General Veterinary Full Paper Mesocricetus brown adipose tissue Thermogenesis 04 agricultural and veterinary sciences Thermogenin Endocrinology medicine.anatomical_structure Animals Newborn Immunostaining |
| Zdroj: | The Journal of Veterinary Medical Science |
| ISSN: | 1347-7439 0916-7250 |
| Popis: | Brown adipose tissue (BAT) contributes to non-shivering thermogenesis and plays an important role in body temperature control. The contribution of BAT thermogenesis to body temperature control in a non-cold environment was evaluated using developing hamsters. Immunostaining for uncoupling protein 1 (UCP1), a mitochondrial protein responsible for BAT thermogenesis, indicated that interscapular fat tissue had matured as BAT at day 14. When pups were placed on a thermal plate kept at 23°C, the body surface temperature decreased in day 7- and 10-day-old pups but was maintained at least for 15 min in 14-day-old pups, indicating that hamsters are unable to maintain their body temperature until around day 14 even in a non-cold environment. Body temperature maintenance was also evaluated in UCP1-deficient mice. BAT analysis showed that the UCP1 protein level in Ucp1+/- Hetero mice was 61.3 ± 1.4% of that in wild-type (WT) mice and was undetected in Ucp1-/- knockout (KO) mice. When 12-day-old pups were place on a thermal plate at 23°C, body surface temperature was maintained for at least 15 min in WT and Hetero mice but gradually dropped by 2.4 ± 0.2°C in 15 min in KO mice. It is concluded that BAT thermogenesis is indispensable for body temperature maintenance in pups of hamsters and mice, even in the non-cold circumstances. The early life poikilothermy and the later acquirement of homeothermy in hamsters may be because of the postnatal development of BAT. |
| Databáze: | OpenAIRE |
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