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NOP Ligands for the Treatment of Anxiety and Mood Disorders

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Part of the book series: Handbook of Experimental Pharmacology ((HEP,volume 254))

Abstract

Many studies point toward the nociceptin/orphanin FQ (N/OFQ) and the N/OFQ peptide receptor (NOP) as targets for the development of innovative drugs for treating anxiety- and mood-related disorders. Evidence supports the view that the activation of NOP receptors with agonists elicits anxiolytic-like effects, while its blockade with NOP antagonists promotes antidepressant-like actions in rodents. Genetic studies showed that NOP receptor knockout mice display an antidepressant-like phenotype, and NOP antagonists are inactive in these animals. In contrast, the genetic blockade of NOP receptor signaling generally displays an increase of anxiety states in the elevated plus-maze test. In this chapter we summarized the most relevant findings of NOP receptor ligands in the modulation of anxiety and mood disorders, and the putative mechanisms of action are discussed.

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Abbreviations

ACTH:

Adrenocorticotropic hormone

BDNF:

Brain-derived neurotrophic factor

BNST:

Bed nucleus of the stria terminalis

CRF:

Corticotropin-releasing factor

DRL:

Differential reinforcement of low rate schedule

DRN:

Dorsal raphe nucleus

FGF-2:

Fibroblast growth factor

HPA:

Hypothalamus-pituitary-adrenal axis

Icv:

Intracerebroventricular

IL-6:

Interleukin-6

J-113397:

1-[(3R,4R)-1-(cyclooctylmethyl)-3-(hydroxymethyl)-4-piperidinyl]-3-ethyl-1,3-dihydro-2H-benzimidazol-2-one

JTC-801:

N-(4-amino-2-methylquinolin-6-yl)-2-(4-ethylphenoxymethyl)benzamide hydrochloride

LPS:

Bacterial lipopolysaccharide

LY2940094:

[2-[4-[(2-chloro-4,4-difluoro-spiro[5Hthieno[2,3-c]pyran-7,4′-piperidine]-1′-yl)methyl]-3-methylpyrazol-1-yl]-3-pyridyl]methanol

N/OFQ:

Nociceptin/orphanin FQ

NOP(−/−):

Mice knockout for the NOP receptor

ppN/OFQ:

N/OFQ precursor

ppN/OFQ(−/−):

Mice knockout for the N/OFQ precursor

PTSD:

Post-traumatic stress disorder

PVN:

Paraventricular nucleus of hypothalamus

Ro 64-6198:

(1S,3aS)-8-(2,3,3a,4,5,6-Hexahydro-1H-phenalen-1-yl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-4-one

Ro 65-6570:

(RS)-8-(1,2-Dihydro-1-acenaphthylenyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-4-one

SB-612111:

(5S,7S)-7-[[4-(2,6-dichlorophenyl)-1-piperidinyl]methyl]-6,7,8,9-tetrahydro-1-methyl-5H-benzocyclohepten-5-ol

SNP:

Single-nucleotide polymorphism

SSRI:

Selective serotonin reuptake inhibitor

TNF-α:

Tumor necrosis factor-α

UFP-101:

[Nphe1, Arg14, Lys15] N/OFQ-NH2

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Correspondence to Elaine C. Gavioli .

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Gavioli, E.C., Holanda, V.A.D., Ruzza, C. (2018). NOP Ligands for the Treatment of Anxiety and Mood Disorders. In: Ko, MC., Caló, G. (eds) The Nociceptin/Orphanin FQ Peptide Receptor. Handbook of Experimental Pharmacology, vol 254. Springer, Cham. https://doi.org/10.1007/164_2018_188

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