DESIGN OF THE MAMMLIAN RESPIRATORY SYSTEM .6. DISTRIBUTION OF MITOCHONDRIA AND CAPILLARIES IN VARIOUS MUSCLES
DESIGN OF THE MAMMLIAN RESPIRATORY SYSTEM .6. DISTRIBUTION OF MITOCHONDRIA AND CAPILLARIES IN VARIOUS MUSCLES
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DOI：
10.1016/0034-5687(81)90078-5
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
WEIBEL, ER
中科院分区：
文献类型：
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作者：
HOPPELER, H;MATHIEU, O;WEIBEL, ER
我们分析了角马[Connochaetes taurinus]和dik-dik [Madoqua kirkii]骨骼肌中支持组织氧运输（毛细血管）和氧消耗（线粒体）结构的变变性。单个肌肉中线粒体和毛细血管密度的区域差异在肌支肌、半腱肌（2倍）中发现，但在背最长肌和横膈膜中没有发现。对比两种动物的20种不同肌肉，肌纤维中线粒体体积密度[VV (mt. f)]在横膈膜中显著较高（10-12%），在其他肌肉中差异很大（1-6%）。VV （mt. f）与每横截面纤维面积NA （c.f）的毛细血管数目之间的关系表现出很大的变异性。在糖酵解纤维中VV（mt）。F)通常较低（1%）；在氧化纤维中为5-15%。在大、小动物中，两种纤维的肌层下和纤维间线粒体嵴的堆积没有系统的趋势。
The variability of structures supporting tissue O2 transport (capillaries) and O2 consumption (mitochondria) was analyzed in skeletal muscles of wildebeest [Connochaetes taurinus] and dik-dik [Madoqua kirkii]. Regional differences in mitochondria and capillary densities within individual muscles were found for M. [musculus], semitendinosus (2-fold) but not for M. longissimus dorsi and diaphragm. Comparing 20 different muscles from both animals, the volume density of mitochondria in the muscle fibers [VV (mt. f)] was significantly higher in diaphragm (10-12%) and varied considerably (1-6%) in the other muscles. The relation between VV (mt. f) and the number of capillaries per cross-sectional fiber area NA (c.f) showed great variability. In glycolytic fibers VV(mt.f) was typically low (1%; in oxidative fibers it ranged from 5-15%. No systematic trend was found for the packing of cristae in subsarcolemmal and interfibrillar mitochondria from both types of fibers in large and small animals.