Flügel C, Lütjen-Drecoll E, Bárány E
Anatomisches Institut, Universität Erlangen-Nürnberg.
Fortschr Ophthalmol. 1990;87(4):384-7.
The ciliary muscle of the primate eye was stained histochemically with enzymes used to differentiate fiber types in the skeletal muscle. Differences between the outer meridional section and the rest of the muscle were found with all enzymes. Staining for myosin-ATPase with acid and alkaline preincubation, as well as for lactate dehydrogenase (LDH), resulted in a stronger reaction in the meridional section, while the reticular and circular portions showed minor activities. In contrast, succinate dehydrogenase (SDH) revealed a stronger activity in the reticular and circular muscle cells. Ultrastructurally, the meridional muscle cells contained fewer mitochondria, but more myofibrils in the cytoplasm, while circular and reticular muscle cells showed just the opposite. Therefore, the cells of the meridional ciliary muscle section resemble in some respects the rapid type-II skeletal muscle fibers, and the circular und reticular muscle cells are comparable to the slow type-I fibers of the skeletal muscle.
使用用于区分骨骼肌纤维类型的酶，对灵长类动物眼睛的睫状肌进行了组织化学染色。所有酶均显示，睫状肌外部子午线部分与肌肉其他部分存在差异。用酸性和碱性预孵育法对肌球蛋白 - ATP酶以及乳酸脱氢酶（LDH）进行染色时，子午线部分的反应更强，而网状和环形部分的活性较弱。相反，琥珀酸脱氢酶（SDH）在网状和环形肌细胞中显示出更强的活性。在超微结构上，子午线肌细胞中的线粒体较少，但细胞质中的肌原纤维较多，而环形和网状肌细胞则相反。因此，睫状肌子午线部分的细胞在某些方面类似于快速的II型骨骼肌纤维，而环形和网状肌细胞则与骨骼肌的慢速I型纤维相当。
