cytochalasin-d and oleylamide

Hemichannels in the overlapping regions of apposing cells plasma membranes join to form gap junctions and provide an intercellular communication pathway. Hemichannels are also present in the nonjunctional regions of individual cells and their activity is gated by several agents, including calcium. However, their physiological roles are unknown. Using techniques of atomic force microscopy (AFM), fluorescent dye uptake assay, and laser confocal immunofluorescence imaging, we have examined the extracellular calcium-dependent modulation of cell volume. In response to a change in the extracellular physiological calcium concentration (1.8 to

Topics: Animals; Calcium; Cattle; Cell Size; Connexin 43; Connexins; Cytochalasin D; Dose-Response Relationship, Drug; Elasticity; Endothelium; Epithelial Cells; Extracellular Space; Fibroblasts; Gap Junctions; Humans; Hypnotics and Sedatives; Ion Channels; Mice; Nucleic Acid Synthesis Inhibitors; Oleic Acids; Osmolar Concentration; Rats; Water