Wheel running affects seasonal acclimatization of physiological and morphological traits in the Djungarian hamster (Phodopus sungorus).
Wheel running affects seasonal acclimatization of physiological and morphological traits in the Djungarian hamster (Phodopus sungorus).
复制标题
轮子转动会影响准加仓鼠 (Phodopus sungorus) 生理和形态特征的季节性适应。
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Steinlechner
中科院分区：
文献类型：
--
作者：
Frank Scherbarth;J. Rozman;M. Klingenspor;G. Brabant;S. Steinlechner
轮运行以前被证明会影响身体质量和迟钝的短日驯化的Djungarian仓鼠（Phodopus sungorus）。为了确定运动对体重的影响是否取决于年度阶段，将仓鼠暴露于光周期的自然变化，并在季节性适应期间体重下降轨迹的之前、中间或结束时获得跑步轮（RW）。由于车轮运行，季节性的体重周期被突然增加的体重阻止或中止，导致体重适合夏季，尽管暴露在短时间内。与对照组相比，麻痹被抑制，睾丸复发提前。相比之下，冬季毛皮的变化保持不变。体成分和血浆瘦素的分析显示，低体脂肪量的RW仓鼠，不仅在冬季，而且在夏季，这表明缺乏季节性肥胖。在冬季慢性瘦素输注只减少体重RW个人，虽然他们的相对体脂量可能甚至低于久坐不动的仓鼠。一个持续的低体脂肪量是可以想象的反映了运动依赖性的代谢变化，与增加的骨矿物质含量和密度在RW仓鼠一致。此外，骨面积增加，再次由延长的脊柱支撑。总之，结果显示了车轮运行对身体组成和身体质量的季节性模式的显着影响，他们建议，身体质量的光周期调节调节不同于生殖和毛皮反应。
Wheel running was previously shown to influence body mass and torpor in short-day-acclimatized Djungarian hamsters (Phodopus sungorus). To determine whether the exercise-induced effect on body mass depends on the annual phase, hamsters were exposed to the natural change in photoperiod and given access to a running wheel (RW), either before, in the middle of, or at the end of the descending body mass trajectory during seasonal acclimatization. Due to wheel running, the seasonal weight cycle was prevented or aborted by abruptly rising body mass, resulting in a weight appropriate for summer, despite exposure to short days. Torpor was inhibited, and testicular recrudescence was advanced, compared with controls. In contrast, the change into winter fur remained unaltered. Analysis of body composition and plasma leptin revealed a low body fat mass in RW hamsters, not only in winter but also in summer, suggesting a lack of seasonal adiposity. Chronic leptin infusion in winter only decreased body mass in RW individuals, although their relative body fat mass probably was even lower than in sedentary hamsters. A constantly low body fat mass is conceivably reflecting an exercise-dependent change in metabolism, consistent with increased bone mineral content and density in RW hamsters. Additionally, bone area was increased, again supported by elongated vertebral columns. Together, the results show a striking effect of wheel running on body composition and the seasonal pattern of body mass, and they suggest that the photoperiodic regulation of body mass is regulated differently than the reproductive and pelage responses.
DOI：
10.1152/ajpregu.00716.2003
发表时间：
2004-07-01
影响因子：
2.8
作者：
Freeman, DA;Lewis, DA;Dark, J
通讯作者：
Dark, J
麻木会缩短西伯利亚仓鼠的昼夜节律。
DOI：
10.1152/ajpregu.1993.265.4.r951
发表时间：
1993
期刊：
The American journal of physiology
影响因子：
--
作者：
Thomas,EM;Jewett,ME;Zucker,I
通讯作者：
Zucker,I