Qu X
Department of Anatomy, Beijing Institute of Physical Education, China.
Br J Sports Med. 1990 Jun;24(2):113-6. doi: 10.1136/bjsm.24.2.113.
In this morphological study of the effects of training on myocardial capillaries, four week old Wistar rats were selected to accept four months of treadmill training. The rats were then sacrificed for morphological study of myocardial capillaries by means of perfused Chinese ink, AKP stain and ultrathin section methods. The results showed that the number of capillaries in trained rats was increased markedly by 14.8 per cent (P less than 0.05) in the outer layer and 13.7 per cent (P less than 0.05) in the inner layer. The ratio of capillaries to myocardial fibres was increased by 17.6 per cent and 13.7 per cent (P less than 0.05) respectively. The area and girth of capillaries in the trained rats were increased by 25 per cent and 26 per cent (P less than 0.01) respectively. Collateral branches in the trained rats were also increased and were more irregular in shape or appeared locally expanding and tortuous. Unopened capillaries were often observed in the control rats, while in the trained rats, no unopened capillaries were observed. In addition, the small vacuoles in the cytoplasm of endothelial cells were also increased.
在这项关于训练对心肌毛细血管影响的形态学研究中，选用四周龄的Wistar大鼠接受为期四个月的跑步机训练。然后处死大鼠，通过灌注中国墨汁、碱性磷酸酶染色和超薄切片法对心肌毛细血管进行形态学研究。结果显示，训练组大鼠外层毛细血管数量显著增加14.8%（P<0.05），内层增加13.7%（P<0.05）。毛细血管与心肌纤维的比例分别增加17.6%和13.7%（P<0.05）。训练组大鼠毛细血管的面积和周长分别增加25%和26%（P<0.01）。训练组大鼠的侧支也增加，且形状更不规则，或出现局部扩张和迂曲。对照组大鼠常可见未开放的毛细血管，而训练组大鼠未见未开放的毛细血管。此外，内皮细胞胞质中的小空泡也增多。
