“Using the scrape‐loading technique in cultured astrocytes, … show that sulfonylureas such as tolbutamide and glybenzcyclamide , which inhibit the ATP‐sensitive K+ channel, prevent the inhibition of gap junction permeability caused by several structurally unrelated uncouplers such as oleic acid , arachidonic acid, endothelin‐1, octanol, and α‐glycyrrhetinic acid.”