title: Effect of pyridine nucleotide precursors on the permeability of toad bladder in the presence of vasopression, adenosine 3':5'-cyclic monophosphate, and theophylline.
abstract: The increase and prolongation of water movement in the toad bladder in the presence of the pyridine nucleotide precursors adenine and nicotinamide (when stimulated with vasopressin, adenosine 3':5'-cyclic phosphate, or theophylline) suggests that pyridine nucleotides may be actively involved in membrane permeability.
mesh_terms: D000818:Animals; D002463:Cell Membrane Permeability / Q000187:drug effects*; D000242:Cyclic AMP / Q000494:pharmacology; D009243:NAD / Q000494:pharmacology*; D009249:NADP / Q000494:pharmacology*; D013806:Theophylline / Q000494:pharmacology; D001743:Urinary Bladder / Q000187:drug effects*; D014667:Vasopressins / Q000494:pharmacology; D014867:Water
chemical_list: D014867:Water; D009243:NAD; D014667:Vasopressins; D009249:NADP; D013806:Theophylline; D000242:Cyclic AMP