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Dos Santos TS, Krüger J, Melleu FF, Herold C, Zilles K, Poli A, Güntürkün O, Marino-Neto J. Distribution of serotonin 5-HT1A-binding sites in the brainstem and the hypothalamus, and their roles in 5-HT-induced sleep and ingestive behaviors in rock pigeons (Columba livia). Behav Brain Res 2015; 295:45-63. [PMID: 25843559 DOI: 10.1016/j.bbr.2015.03.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 02/20/2015] [Accepted: 03/26/2015] [Indexed: 02/06/2023]
Abstract
Serotonin 1A receptors (5-HT1ARs), which are widely distributed in the mammalian brain, participate in cognitive and emotional functions. In birds, 5-HT1ARs are expressed in prosencephalic areas involved in visual and cognitive functions. Diverse evidence supports 5-HT1AR-mediated 5-HT-induced ingestive and sleep behaviors in birds. Here, we describe the distribution of 5-HT1ARs in the hypothalamus and brainstem of birds, analyze their potential roles in sleep and ingestive behaviors, and attempt to determine the involvement of auto-/hetero-5-HT1ARs in these behaviors. In 6 pigeons, the anatomical distribution of [(3)H]8-OH-DPAT binding in the rostral brainstem and hypothalamus was examined. Ingestive/sleep behaviors were recorded (1h) in 16 pigeons pretreated with MM77 (a heterosynaptic 5-HT1AR antagonist; 23 or 69 nmol) for 20 min, followed by intracerebroventricular ICV injection of 5-HT (N:8; 150 nmol), 8-OH-DPAT (DPAT, a 5-HT1A,7R agonist, 30 nmol N:8) or vehicle. 5-HT- and DPAT-induced sleep and ingestive behaviors, brainstem 5-HT neuronal density and brain 5-HT content were examined in 12 pigeons, pretreated by ICV with the 5-HT neurotoxin 5,7-dihydroxytryptamine (5,7-DHT) or vehicle (N:6/group). The distribution of brainstem and diencephalic c-Fos immunoreactivity after ICV injection of 5-HT, DPAT or vehicle (N:5/group) into birds provided with or denied access to water is also described. 5-HT1ARs are concentrated in the brainstem 5-HTergic areas and throughout the periventricular hypothalamus, preoptic nuclei and circumventricular organs. 5-HT and DPAT produced a complex c-Fos expression pattern in the 5-HT1AR-enriched preoptic hypothalamus and the circumventricular organs, which are related to drinking and sleep regulation, but modestly affected c-Fos expression in 5-HTergic neurons. The 5-HT-induced ingestivebehaviors and the 5-HT- and DPAT-induced sleep behaviors were reduced by MM77 pretreatment. 5,7-DHT increased sleep per se, decreased tryptophan hydroxylase expression in the raphe nuclei and decreased prosencephalic 5-HT release but failed to affect 5-HT- or DPAT-induced drinking or sleep behavior. 5-HT- and DPAT-induced ingestive and sleep behaviors in pigeons appear to be mediated by heterosynaptic and/or non-somatodendritic presynaptic 5-HT1ARs localized to periventricular diencephalic circuits.
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Affiliation(s)
- Tiago Souza Dos Santos
- Department of Physiological Sciences, CCB, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
| | - Jéssica Krüger
- Department of Physiological Sciences, CCB, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
| | - Fernando Falkenburger Melleu
- Department of Physiological Sciences, CCB, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
| | - Christina Herold
- C & O. Vogt Institute for Brain Research, Heinrich Heine University, 40225 Düsseldorf, Germany.
| | - Karl Zilles
- Institute of Neuroscience and Medicine INM-1, Research Center Jülich, 52425 Jülich, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, 52074 Aachen, Germany; JARA - Translational Brain Medicine, 52074 Aachen, Germany.
| | - Anicleto Poli
- Department of Pharmacology, CCB, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
| | - Onur Güntürkün
- Institute for Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, 44780 Bochum, Germany.
| | - José Marino-Neto
- Department of Physiological Sciences, CCB, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil; Institute of Biomedical Engineering, EEL-CTC, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
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Volk B, Gacsályi I, Pallagi K, Poszávácz L, Gyönös I, Szabó É, Bakó T, Spedding M, Simig G, Szénási G. Optimization of (Arylpiperazinylbutyl)oxindoles Exhibiting Selective 5-HT7 Receptor Antagonist Activity. J Med Chem 2011; 54:6657-69. [DOI: 10.1021/jm200547z] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Balázs Volk
- Chemical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - István Gacsályi
- Preclinical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - Katalin Pallagi
- Preclinical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - László Poszávácz
- Chemical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - Ildikó Gyönös
- Preclinical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - Éva Szabó
- Preclinical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - Tibor Bakó
- Chemical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - Michael Spedding
- Les Laboratoires Servier, 22 rue Garnier, 92578 Neuilly-sur-Seine, France
| | - Gyula Simig
- Chemical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
| | - Gábor Szénási
- Preclinical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
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Briones-Aranda A, Castillo-Salazar M, Picazo O. Adrenalectomy modifies the hippocampal 5-HT1A receptors and the anxiolytic-like effect of 8-OH-DPAT in rats. Pharmacol Biochem Behav 2009; 92:182-9. [DOI: 10.1016/j.pbb.2008.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2008] [Revised: 11/15/2008] [Accepted: 11/21/2008] [Indexed: 10/21/2022]
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Delta(9)-tetrahydrocannabinol prolongs the immobility time in the mouse forced swim test: involvement of cannabinoid CB(1) receptor and serotonergic system. Eur J Pharmacol 2008; 589:117-21. [PMID: 18565508 DOI: 10.1016/j.ejphar.2008.03.046] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Revised: 03/07/2008] [Accepted: 03/27/2008] [Indexed: 11/20/2022]
Abstract
In the present study, we investigated the effect of Delta(9)-tetrahydrocannabinol (THC), the principal psychoactive component of marijuana, on immobility time during the forced swim test. THC (2 and 6 mg/kg, i.p.) significantly prolonged the immobility time. In addition, THC at the same doses did not significantly affect locomotor activity in the open-field test. The selective cannabinoid CB(1) receptor antagonist rimonabant (3 mg/kg, i.p.) significantly reduced the enhancement of immobility by THC (6 mg/kg). Similarly, the selective serotonin (5-HT) reuptake inhibitor (SSRI) citalopram (10 mg/kg, i.p.) and 5-HT(1A/7) receptor agonist 8-hydroxy-2-(di-n-propylamino) tetralin (8-OH-DPAT, 0.3 mg/kg, i.p.) significantly reduced this THC-induced effect. Moreover, the selective 5-HT(1A) receptor antagonist N-[2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl]-N-(2-pyridinyl) cyclohexane carboxamide dihydrochloride (WAY100635, 1 mg/kg, i.p.) and the postsynaptic 5-HT(1A) receptor antagonist MM-77 (0.1 mg/kg, i.p.) reversed this reduction effect of 8-OH-DPAT (0.3 mg/kg). In contrast, the selective 5-HT(7) receptor antagonist (R)-3-[2-[2-(4-methylpiperidin-1-yl)ethyl]pyrrolidine-1-sulfonyl]phenol hydrochloride (SB269970) had no effect on this reduction effect of 8-OH-DPAT. WAY100635 (1 mg/kg) also reversed the reduction effect of citalopram (10 mg/kg). These findings suggest that the 5-HT(1A) receptors are involved in THC-induced enhancement of immobility.
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