Capillary supply of skeletal muscles from acclimatized white-footed mice Peromyscus.
Capillary supply of skeletal muscles from acclimatized white-footed mice Peromyscus.
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来自适应环境的白足小鼠 Peromyscus 的骨骼肌毛细血管供应。
DOI：
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发表时间：
1981
影响因子：
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通讯作者：
S. Wickler
中科院分区：
文献类型：
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作者：
S. Wickler
冬季驯化白足鼠（Peromyscusleucopus）在冷应激下的有氧产热能力提高了70%。微血管供应的变化可能部分地解释了这种产热能力增加的可能性，在主要产热组织之一骨骼肌中进行了检查。用组织化学方法对夏、冬两季新鲜捕获的白足鼠后肢肌肉中的肌帽进行了染色。从比目鱼肌、跖肌、腓肠肌和半腱肌获得毛细血管密度、平均纤维面积和每根肌纤维接触的平均毛细血管。如果所有个体肌肉的结果相结合，平均纤维面积显着较小（8%），平均毛细血管密度显着较大（40%）在冬季肌肉。毛细血管接触的平均数量没有差异，但平均纤维面积（潜在灌注指数）的毛细血管接触的平均比率在冬季肌肉中显着更大（25%）。
Winter-acclimatized white-footed mice (Peromyscus leucopus) can increase their aerobic heat production under cold stress by 70%. The possibility that changes in microvascular supply might account, in part, for some of this increased thermogenic capacity was examined in one of the primary thermogenic tissues, skeletal muscle. Capillaries were stained histochemically in four hindlimb muscles of freshly captured Peromyscus in summer and winter. Capillary density, mean fiber area, and mean capillaries in contact per muscle fiber were obtained from the soleus, plantaris, gastrocnemius, and semitendinosus. If results from all individual muscles are combined, mean fiber area is significantly smaller (8%) and mean capillary density is significantly greater (40%) in winter muscles. The mean number of capillaries in contact is not different, but the mean ratio of capillaries in contact per mean fiber area (index of potential perfusion) is significantly greater (25%) in winter muscles.