Turning behavior induced in mice by a neurokinin A receptor agonist: stereoselective blockade by SR 48968, a non-peptide receptor antagonist.
The intrastriatal injection of [Nle10]-NKA(4-10), a neurokinin A agonist, (0.05-5 ng/mouse) elicited vigorous contralateral rotations. This behavior was dose-dependently antagonized by SR 48968 (ED50: 0.15 mg/kg i.p.: 0.19 mg/kg p.o.), a selective non-peptide antagonist of NK-2 receptors, but it was not affected by spiroperidol. This suggests that NK-2 receptor stimulation may affect the activity of the striatum without necessarily involving dopaminergic systems.
Poncelet
M
M
Sanofi Recherche, Montpellier, France.
Gueudet
C
C
Emonds-Alt
X
X
Brelière
J C
JC
Le Fur
G
G
Soubrié
P
P
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D001549:Benzamides / Q000494:pharmacology*; D003342:Corpus Striatum; D065127:Dopamine D2 Receptor Antagonists; D004305:Dose-Response Relationship, Drug; D005260:Female; D007267:Injections; D007274:Injections, Intraperitoneal; D051379:Mice; D008815:Mice, Inbred Strains; D015288:Neurokinin A / Q000031:analogs & derivatives* / Q000494:pharmacology; D010446:Peptide Fragments / Q000494:pharmacology*; D010880:Piperidines / Q000494:pharmacology*; D018041:Receptors, Neurokinin-2; D017981:Receptors, Neurotransmitter / Q000502:physiology*; D013134:Spiperone / Q000494:pharmacology; D013237:Stereoisomerism; D013239:Stereotyped Behavior / Q000187:drug effects* / Q000502:physiology*
D001549:Benzamides; D065127:Dopamine D2 Receptor Antagonists; D010446:Peptide Fragments; D010880:Piperidines; D018041:Receptors, Neurokinin-2; D017981:Receptors, Neurotransmitter; C061060:neurokinin A (4-10), Nle(10)-; D013134:Spiperone; C073839:SR 48968; D015288:Neurokinin A