PMID- 24613977 OWN - NLM STAT- MEDLINE DCOM- 20141212 LR - 20140415 IS - 1872-7549 (Electronic) IS - 0166-4328 (Linking) VI - 266 DP - 2014 Jun 1 TI - Neuropeptide S counteracts 6-OHDA-induced motor deficits in mice. PG - 29-36 LID - S0166-4328(14)00144-2 [pii] LID - 10.1016/j.bbr.2014.03.002 [doi] AB - Neuropeptide S (NPS) is a 20-aminoacid peptide that selectively activates a G-protein coupled receptor named NPSR. Preclinical studies have shown that NPSR activation promotes anxiolysis, hyperlocomotion, arousal and weakfullness. Previous findings suggest that dopamine neurotransmission plays a role in the actions of NPS. Based on the close relationship between dopamine and Parkinson disease (PD) and on the evidence that NPSR are expressed on brain dopaminergic nuclei, the present study investigated the effects of NPS in motor deficits induced by intracerebroventricular (icv) administration of the dopaminergic neurotoxin 6-OHDA in the mouse rotarod test. 6-OHDA injection evoked motor deficits and significantly reduced tyrosine hidroxylase (TH)-positive cells in the substantia nigra (SN) and ventral tegmental area. However, a positive correlation was found only between the motor performance of 6-OHDA-injected mice and the number of TH-positive cells in SN. The systemic administration of l-DOPA+benserazide (25+6.25 mg/kg) counteracted 6-OHDA-induced motor deficits in mice. Similar to L-DOPA, the icv injection of NPS (0.1 and 1 nmol) reversed motor deficits evoked by 6-OHDA. In conclusion, NPS attenuated 6-OHDA-induced motor impairments in mice assessed in the rota-rod test. We discussed the beneficial actions of NPS based on a putative facilitation of dopaminergic neurotransmission in the brain. Finally, these findings candidate NPSR agonists as a potential innovative treatment for PD. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Didonet, Julia J AU - Didonet JJ AD - Behavioral Pharmacology Laboratory, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, RN, Brazil. FAU - Cavalcante, Judney C AU - Cavalcante JC AD - Laboratory of Neuroanatomy, Department of Morphology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil. FAU - Souza, Lisiane de S AU - Souza Lde S AD - Behavioral Pharmacology Laboratory, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, RN, Brazil. FAU - Costa, Miriam S M O AU - Costa MS AD - Laboratory of Neuroanatomy, Department of Morphology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil. FAU - Andre, Eunice AU - Andre E AD - Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil. FAU - Soares-Rachetti, Vanessa de P AU - Soares-Rachetti Vde P AD - Behavioral Pharmacology Laboratory, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, RN, Brazil. FAU - Guerrini, Remo AU - Guerrini R AD - Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy. FAU - Calo', Girolamo AU - Calo' G AD - Department of Medical Sciences, Section of Pharmacology, and National Institute of Neuroscience, University of Ferrara, Ferrara, Italy. FAU - Gavioli, Elaine C AU - Gavioli EC AD - Behavioral Pharmacology Laboratory, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, RN, Brazil. Electronic address: egavioli@hotmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140311 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Adrenergic Agents) RN - 0 (Dopamine Agents) RN - 0 (NPSR1 protein, human) RN - 0 (Receptors, G-Protein-Coupled) RN - 46627O600J (Levodopa) RN - 8HW4YBZ748 (Oxidopamine) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) SB - IM MH - Adrenergic Agents/*toxicity MH - Analysis of Variance MH - Animals MH - Area Under Curve MH - Disease Models, Animal MH - Dopamine Agents/therapeutic use MH - Female MH - Levodopa/therapeutic use MH - Mice MH - Movement Disorders/*drug therapy/*etiology MH - Oxidopamine/*toxicity MH - Receptors, G-Protein-Coupled/*therapeutic use MH - Rotarod Performance Test MH - Substantia Nigra/metabolism/pathology MH - Tyrosine 3-Monooxygenase/metabolism OTO - NOTNLM OT - 6-OHDA OT - Dopamine OT - Motor activity OT - Mouse OT - Neuropeptide S OT - Parkinson disease EDAT- 2014/03/13 06:00 MHDA- 2014/12/17 06:00 CRDT- 2014/03/12 06:00 PHST- 2014/01/25 00:00 [received] PHST- 2014/02/28 00:00 [revised] PHST- 2014/03/03 00:00 [accepted] PHST- 2014/03/12 06:00 [entrez] PHST- 2014/03/13 06:00 [pubmed] PHST- 2014/12/17 06:00 [medline] AID - S0166-4328(14)00144-2 [pii] AID - 10.1016/j.bbr.2014.03.002 [doi] PST - ppublish SO - Behav Brain Res. 2014 Jun 1;266:29-36. doi: 10.1016/j.bbr.2014.03.002. Epub 2014 Mar 11.