Ayettey A S, Tagoe C N, Yates R D
Department of Anatomy, University of Ghana Medical School, Accra.
J Anat. 1990 Dec;173:37-42.
Subendocardial cells of the right ventricular myocardium of the West African bat, Pipistrellus pipistrellus, were investigated at the ultrastructural level. The prominent features of these cells include a well-developed T-tubule system and numerous mitochondria with closely packed cristae. Additionally, the cells display large stores of lipid bodies. These unusual features confirm that Purkinje cells are heterogeneous in structural detail. From the paucity and poor structure of myofibrils of these cells, it is likely that the T-tubules may have a primary nutritional role in the regulation of electrolytes in an animal in which the cardiac cycle is particularly rapid. The well-developed mitochondria and the large stores of lipid bodies are appropriate for such active cells in which metabolism is probably of the aerobic type.
对西非蝙蝠（ Pipistrellus pipistrellus）右心室心肌的心内膜下细胞进行了超微结构水平的研究。这些细胞的显著特征包括发育良好的T小管系统和许多嵴紧密排列的线粒体。此外，这些细胞还显示出大量的脂质体储存。这些不寻常的特征证实了浦肯野细胞在结构细节上是异质的。鉴于这些细胞的肌原纤维数量稀少且结构不佳，在心动周期特别快的动物中，T小管可能在电解质调节中具有主要的营养作用。发育良好的线粒体和大量的脂质体储存适合于这类代谢可能为需氧型的活跃细胞。
