Ultracytochemical localization of Ca++-ATPase activity in the paraphyseal epithelial cells of the frog, Rana esculenta.
作者： Satoki Ueno , Hikmet Umar , HeinzJoachim Bambauer , Manfred Ueck
DOI: 10.1007/BF00213716
关键词:
摘要: Ca++-ATPase activity was studied ultracytochemically (cf. Ando et al. 1981) in the paraphysis cerebri of frog. An intense reaction demonstrated on plasmalemma microvilli at apical pole paraphyseal cells; contrast, basolateral showed only a slight staining. In addition, mitochondria, gap junctions, cilia, and cytoplasmic elements (e.g., microfilaments) displayed activity. Variation Ca++-concentration incubation medium from 0.1 mM to 100 altered cell organelles. The substitution Ca-by Mg-ions resulted conspicuous decrease enzyme activity, especially plasmalemma. is claimed be involved number extra-and intracellular functions. comparison epithelium adjacent choroid plexus epithelial thought principal Ca-ion regulator cerebrospinal fluid frogs.
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