title: Anxiolytic-like effects of PHCCC, an allosteric modulator of mGlu4 receptors, in rats.
abstract: We examined the potential anxiolytic-like activity of (-)-N-phenyl-7-(hydroxyimino) cyclopropa[b]chromen-1a-carboxamide (PHCCC), an allosteric modulator of metabotropic glutamate4 receptors (mGlu4), after administration into the basolateral amygdala, using the conflict drinking Vogel test in rats as a model. The results indicate that PHCCC, but not 7-(hydroxyimino)cyclopropa[b]chromen-1a-carboxylate ethyl ester (CPCCOEt), the selective antagonist of group mGlu1 receptors, showed significant, dose-dependent anticonflict effects without affecting the threshold current or water intake. The results indicate that positive allosteric modulation of mGlu4 receptors may be a useful therapeutic approach to anxiety.
authors.affiliation: Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Stachowicz
authors.forename: Kinga
authors.initials: K
authors.lastname: Kłak
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Kłodzińska
authors.forename: Ewa
authors.initials: E
authors.lastname: Chojnacka-Wojcik
authors.forename: Andrzej
authors.initials: A
authors.lastname: Pilc
mesh_terms: D000428:Alcohol Drinking; D000494:Allosteric Regulation; D000679:Amygdala / Q000187:drug effects; D000704:Analysis of Variance; D000818:Animals; D014151:Anti-Anxiety Agents / Q000494:pharmacology*; D001007:Anxiety / Q000517:prevention & control; D001522:Behavior, Animal / Q000187:drug effects; D001578:Benzopyrans / Q000494:pharmacology*; D002867:Chromones / Q000494:pharmacology; D003220:Conflict, Psychological; D004305:Dose-Response Relationship, Drug; D004327:Drinking Behavior / Q000187:drug effects; D004597:Electroshock; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D018094:Receptors, Metabotropic Glutamate / Q000037:antagonists & inhibitors / Q000737:chemistry / Q000378:metabolism*
chemical_list: C117789:7-(hydroxyimino)cyclopropan(b)chromen-1a-carbxoylic acid ethyl ester; D014151:Anti-Anxiety Agents; D001578:Benzopyrans; D002867:Chromones; C442478:N-phenyl-7-(hydroxyimino)cyclopropa(b)chromen-1a-carboxamide; D018094:Receptors, Metabotropic Glutamate; C104077:metabotropic glutamate receptor type 1; C108823:metabotropic glutamate receptor 4