SKELETAL-MUSCLE CAPILLARY SUPPLY IN A FISH THAT LACKS RESPIRATORY PIGMENTS
SKELETAL-MUSCLE CAPILLARY SUPPLY IN A FISH THAT LACKS RESPIRATORY PIGMENTS
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DOI：
10.1016/0034-5687(84)90093-8
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发表时间：
1984-01-01
期刊：
影响因子：
--
通讯作者：
WOOD, RE
中科院分区：
文献类型：
--
作者：
FITCH, NA;JOHNSTON, IA;WOOD, RE
本文研究了无血红蛋白的尖吻白鲑（ChaenocephalusaceratusLonnberg）慢躯干肌毛细血管密度与线粒体体密度的关系。硬骨鱼慢肌毛细血管密度NA（c，f）与线粒体体积密度VV（mit，f）呈正相关。冰鱼的慢躯干肌的毛细血管密度低（544 ± 0.01）。24毛细血管/mm 2），与具有相似线粒体体积密度的硬骨鱼类（0.34 ± 0.24毛细血管/mm 2）相比，0.01）。Saithe（Pollachius virens）中的慢肌纤维Vv（mit，f）为0.35 ± 0.05。0.02但毛细管密度为4507个毛细管/mm 2。估计的毛细血管表面和体积密度的冰鱼（198和0.035厘米-1，分别）的范围内报告的其他硬骨鱼类的文献。C. aceratus NA（c，f）提供了外周交换血管功能特性的相对较差的指标。C.平均毛细血管横截面积。aceratus（64 . 7 μ m2）比在大多数硬骨鱼物种中发现的大2-3倍。报道的低外周阻力的冰鱼，C。因此，Aceratus是大口径毛细血管存在的结果，所产生的高流速也允许维持有利的高毛细血管-组织PO 2 [分压O2]梯度。
The relationship between capillary density and mitochondrial volume density was investigated for the slow trunk muscle of the hemoglobinless Icefish, Chaenocephalus aceratus Lonnberg. Teleost slow muscles capillary densities, NA(c,f), are positively correlated with mitochondrial volume densities, Vv(mit,f). The capillary density for the slow trunk muscle of the Icefish is low (544 .+-. 24 capillaries/mm2) when compared with teleosts of similar mitochondrial volume densities (0.34 .+-. 0.01). Slow muscle fibers in Saithe (Pollachius virens) Vv(mit,f) is 0.35 .+-. 0.02 but the capillary density is 4507 capillaries/mm2. Estimates of capillary surface and volume densities for the Icefish(198 and 0.035 cm-1, respectively) are in the range reported in the literature for other teleost species. C. aceratus NA(c,f) provides a relatively poor index of the functional properties of the peripheral exchange vessels. Mean capillary cross-sectional area for C. aceratus (64 .+-. 7 .mu.m2) was 2-3 times greater than that found in most teleost species. The low peripheral resistance reported for the Icefish, C. aceratus is therefore the result of the presence of large bore capillaries, the resulting high flow rates also allowing the maintenance of favorably high capillary-tissue PO2 [partial pressure O2] gradients.