灰海豹（Halichoerus grypus）特定心脏颗粒的形态计量学研究。

Morphometric study of specific heart granules in the grey seal (Halichoerus grypus).

作者信息

Ayettey A S, Navaratnam V, Tagoe C N, Chen I L, Yates R D

机构信息

Department of Anatomy, Tulane University School of Medicine, New Orleans, La., USA.

出版信息

Acta Anat (Basel). 1996;156(2):81-6. doi: 10.1159/000147831.

DOI:10.1159/000147831

PMID:8993626

Abstract

Specific heart granules in the grey seal, Halichoerus grypus, a marine mammal, were studied and compared with those in the Wistar rat by ultrastructural morphometry. There is extreme paucity of these granules in atrial cells of the seal, even in the region of the Golgi apparatus, compared with those in the rat. By numerical concentration, granules in the seal are 23 times fewer in number than in the rat. They are also fewer in number than in bats and hamsters for which data is available. The mean (+/-SEM) diameter of heart granules in the seal is significantly less (188 +/- 5.3 nm) than that of the rat (226 +/- 4.6 nm). These observations, the first in a marine mammal, are of interest in relation to the need for conservation of water and electrolytes in pennipids.

摘要

对一种海洋哺乳动物灰海豹（Halichoerus grypus）的特定心脏颗粒进行了研究，并通过超微结构形态计量学将其与Wistar大鼠的心脏颗粒进行了比较。与大鼠相比，海豹心房细胞中这些颗粒极其稀少，即使在高尔基体区域也是如此。通过数量浓度计算，海豹体内的颗粒数量比大鼠少23倍。与已有数据的蝙蝠和仓鼠相比，其颗粒数量也较少。海豹心脏颗粒的平均（±SEM）直径（188±5.3纳米）明显小于大鼠（226±4.6纳米）。这些首次在海洋哺乳动物中得到的观察结果，对于鳍脚类动物对水和电解质的保存需求具有重要意义。