QueryDate : 2016-12-24
Cites : 2
| ORIGINAL
ARTICLE |
| | | Data source : Google Scholar QueryDate : 2016-12-24 Cites : 2 |
In
order to study the relationship between energy strategies and
environmental temperature, basal metabolic rate (BMR), nonshivering
thermogenesis (NST), the total protein contents, mitochondrial protein
contents, state and state respiratory ability, cytochrome C oxidase
activity Ⅲ Ⅳ of liver, heart, diaphragm, gastrocnemius and brown
adipose tissue (BAT), serum leptin level and serum thyroid hormone
levels were measured in tree shrews (Tupaia belangeri) during cold exposure (5±1oC)
for 1 day, 7 days,14days,21 days. The results showed that body mass
increased, BMR and NST increased, the change of liver mitochondrial
protein content was more acutely than total protein. The mitochondrial
protein content of heart and BAT were significantly increased during
cold-exposed, however the skeletal muscle more moderate reaction. The
state Ⅲ and state Ⅳ mitochondrial respiration of these tissues were
enhanced significantly than the control. The cytochrome C oxidase
activity with cold acclimation also significantly increased except the
gastrocnemius. Liver, muscle, BAT, heart and other organs were
concerned with thermoregulation during the thermal regulation process
above cold-exposed. There is a negative correlation between leptin
level and body mass. These results suggested that T. belangeri
enhanced thermogenic capacity during cold acclimation, and leptin
participated in the regulation of energy balance and body weight in T. belangeri.
