title: Characterization of muscarinic receptors in human submandibular salivary glands.
abstract: We studied the binding of the muscarinic antagonist [3H]N-methyl-scopolamine [( 3H]NMS) in order to characterize muscarinic receptors located in human submandibular salivary glands obtained from intrasurgical biopsy. [3H]NMS bound with a Kd value of 1.56 nM to a single class of muscarinic receptors (Bmax 37.3 fmol/mg protein) since pirenzepine exhibited a homogeneous binding profile.
mesh_terms: D006801:Humans; D066298:In Vitro Techniques; D007700:Kinetics; D008566:Membranes / Q000378:metabolism; D019832:N-Methylscopolamine; D011976:Receptors, Muscarinic / Q000378:metabolism*; D012602:Scopolamine Derivatives / Q000378:metabolism; D013363:Submandibular Gland / Q000378:metabolism*
chemical_list: D011976:Receptors, Muscarinic; D012602:Scopolamine Derivatives; D019832:N-Methylscopolamine