Abstract
In order to examine whether the hypoxia of high altitude increases angiogenic activity in skeletal muscle, six male Wistar rats were subjected to a simulated altitude of about 5,500 m (ambient pressure 380 mmHg) for 3 weeks, and the whole soleus, gastrocnemius, and extensor digitorum longus muscles were collected. As a result, any muscle extracts from high altitude rats did not significantly enhance the capillary growth in an in vitro angiogenesis model compared with those from sea-level rats. This appeared to confirm previous morphological studies that hypobaric-hypoxic environment did not cause the formation of new capillaries in skeletal muscles.
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