Differences in exercise capacity and muscle glycogen metabolism in C57BL/6J and BALB/cA mice.

This study compared differences in exercise capacity as well as muscle glycogen content and degradation, and mitochondrial enzyme activity between C57BL/6J and BALB/cA mice. In exercise tests, grip strength was higher in BALB/cA mice. In Rotarod and Inverted screen test, C57BL/6J mice had significantly longer exercise durations and showed differences in motor function and muscle endurance time.

Association of the suckling-weaning transition with development of the hypothalamic arcuate nucleus neurons in rat pups.

Feeding behavior is regulated by feeding-related peptides in the hypothalamus. The neurons of the arcuate nucleus (ARC), which produces feeding-related peptides, develop and function by three weeks of age in rodents. Because rodents are weaned at three weeks, we studied whether the process of weaning is involved in the development of ARC neurons using monosodium glutamate.

Impaired growth of small intestinal epithelium by adrenalectomy in weaning rats.

Functional maturation of the small intestine occurs during the weaning period in rats. It is known that this development is facilitated by glucocorticoid. However, the effect of glucocorticoid on morphological development of small intestine has yet to be clarified.