摘要
应用透射电镜对冷水组 (4℃和 10℃ )、温水组 (2 5℃ )和对照组小鼠心肌细胞超微结构作了观察。结果表明 ,冷水组中 4℃和 10℃实验组小鼠心肌细胞超微结构变化无明显区别 ,其心肌细胞质内有大量的线粒体。线粒体体积大、分布密集 ,嵴间基质中有丰富的嗜锇颗粒。心肌细胞内糖元颗粒显著增加 ,呈簇状或单个分布。在电镜下观察 ,冷水组小鼠心肌细胞超微结构未见损伤性改变。温水组小鼠心肌细胞内的线粒体 ,嗜锇颗粒和糖元类似于对照组。结果提示 ,长期和适度的冷水游泳有助于改善心肌细胞的超微结构 ,提高心肌细胞的能量代谢和能量贮备 ,促进心肌细胞的活性。提示 ,长期、适度的冬泳有助于提高人类心脏功能。
The mice were divided into three groups, the group swimming in cold water (4℃ and 10℃), group swimming in warm water (25℃) and the control group. Applying the transmission electron microscope (TEM) the ultrastructures of cardiac muscle cells of the mice were observed. It was shown that there were no remarkable changes in the ultrastructures of the cardiac muscle cells between the group swimming in 4℃ cold water and the group swimming in 10℃ cold water. There were large numbers of mitochondria in cytoplasm of their cardiac muscles. The volumes of the mitochondria were great, they distributed densely and there were abundant osmiophilic particles among the cristae. In cardiac muscle cells there were glycogen particles increased significantly and distributing in clusters. Observed under the electron microscope no traumatic change could be seen in the ultrastructures of the cardiac muscle cells of the mice. The mitochondria, osmiophilic particles and glycogen in cardiac muscle cells of the mice group swimming in warm water were similar to those of the control group. The results indicate that prolonged and moderate swimming in cold water contributes to the improvement of the ultrastructures of cardiac muscle cells, energy metabolism and energy reserve as well as to the promotion of activities of cardiac muscle cells, showing that prolonged and moderate swimming in winter contributes to improving cardiac functions of people.
出处
《北京体育大学学报》
CSSCI
北大核心
2002年第5期633-635,共3页
Journal of Beijing Sport University
关键词
心肌细胞
线粒体
超微结构
冷水游泳
小鼠
冬泳
cardiac muscle cell
mitochondrion
ultrastructure
swimming in cold water
mouse
