title: Inhibition and enhancement of odorant-induced cAMP accumulation in rat olfactory cilia by antibodies directed against G alpha S/olf- and G alpha i-protein subunits.
abstract: The odorant-induced accumulation of cAMP can be inhibited by antibodies directed against G alpha s/olf. In contrast, antibodies raised against G alpha i-subunits caused a strong enhancement of the odorant-induced cAMP accumulation. Western blotting and immunoelectron microscopy revealed the presence of both G alpha s/olf- and G alpha i-subunits in rat cilia preparations. The existence of both stimulatory and inhibitory odorant-induced regulation of adenylyl cyclase activity in olfactory cilia may indicate that an initial integration of different odorant stimuli begins at the level of primary reactions in the same effector enzyme.
authors.affiliation: Department of Anatomy, Physiology and Pharmacology, Auburn University, AL 36849, USA.
authors.forename: S
authors.initials: S
authors.lastname: Sinnarajah
authors.forename: P I
authors.initials: PI
authors.lastname: Ezeh
authors.forename: S
authors.initials: S
authors.lastname: Pathirana
authors.forename: A G
authors.initials: AG
authors.lastname: Moss
authors.forename: E E
authors.initials: EE
authors.lastname: Morrison
authors.forename: V
authors.initials: V
authors.lastname: Vodyanoy
mesh_terms: D000067956:Adenylyl Cyclase Inhibitors; D000262:Adenylyl Cyclases / Q000378:metabolism; D000818:Animals; D000906:Antibodies / Q000494:pharmacology*; D001666:Binding Sites, Antibody; D015153:Blotting, Western; D002923:Cilia / Q000378:metabolism; D000242:Cyclic AMP / Q000037:antagonists & inhibitors* / Q000378:metabolism*; D019204:GTP-Binding Proteins / Q000276:immunology*; D008297:Male; D008854:Microscopy, Electron; D009831:Olfactory Mucosa / Q000276:immunology / Q000502:physiology* / Q000648:ultrastructure; D051381:Rats; D017207:Rats, Sprague-Dawley; D018035:Receptors, Odorant / Q000502:physiology*
chemical_list: D000067956:Adenylyl Cyclase Inhibitors; D000906:Antibodies; D018035:Receptors, Odorant; D000242:Cyclic AMP; D019204:GTP-Binding Proteins; D000262:Adenylyl Cyclases