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de Freitas RL, Acunha RM, Bendaña-Córdoba FR, Medeiros P, Melo-Thomas L, Coimbra NC. Nitric oxide-signalling affects panic-like defensive behaviour and defensive antinociception neuromodulation in the prelimbic cerebral cortex. Brain Res 2024; 1844:149134. [PMID: 39097217 DOI: 10.1016/j.brainres.2024.149134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 07/22/2024] [Accepted: 07/27/2024] [Indexed: 08/05/2024]
Abstract
RATIONALE The prelimbic division (PrL) of the medial prefrontal cortex (mPFC) is a key structure in panic. OBJECTIVES To evaluate the role of nitric oxide (NO) in defensive behaviour and antinociception. METHODS Either Nω-propyl-L-arginine (NPLA) or Carboxy-PTIO was microinjected in the PrL cortex, followed by hypothalamic treatment with bicuculline. The exploratory behaviours, defensive reactions and defensive antinociception were recorded. Encephalic c-Fos protein was immunolabelled after escape behaviour. RESULTS NPLA (an inhibition of nNOs) decreased panic-like responses and innate fear-induced antinociception. The c-PTIO (a membrane-impermeable NO scavenger) decreased the escape behaviour. PrL cortex pre-treatment with c-PTIO at all doses decreased defensive antinociception. c-Fos protein was labelled in neocortical areas, limbic system, and mesencephalic structures. CONCLUSION The NPLA and c-PTIO in the PrL/mPFC decreased the escape behaviour and defensive antinociception organised by medial hypothalamic nuclei. The oriented escape behaviour recruits neocortical areas, limbic system, and mesencephalic structures. These findings suggest that the organisation of defensive antinociception recruits NO-signalling mechanisms within the PrL cortex. Furthermore, the present findings also support the role of NO as a retrograde messenger in the PrL cortex during panic-like emotional reactions.
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Affiliation(s)
- Renato Leonardo de Freitas
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Institute of Neuroscience and Behaviour (INeC) Ophidiarium, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14040-901, Brazil; Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy; Institute of Natural Sciences, Federal University of Alfenas (UNIFAL-MG), Str. Gabriel Monteiro da Silva, 700, Alfenas, 37130-000 Minas Gerais (MG), Brazil.
| | - Renata Moreira Acunha
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil
| | - Fernando René Bendaña-Córdoba
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil
| | - Priscila Medeiros
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Department of General and Specialized Nursing, University of São Paulo at Ribeirão Preto College of Nursing (EERP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil
| | - Liana Melo-Thomas
- Marburg Centre for Mind, Brain, and Behaviour (MCMBB) of the Philipps-Universität Marburg, Hans-Meerwein-Straße 6, 35032 Marburg, Germany; Behavioural Neuroscience, Experimental and Biological Psychology, Philipps-University of Marburg, Gutenbergstr. 18, D-35032 Marburg, Germany
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, Brazil; Institute of Neuroscience and Behaviour (INeC) Ophidiarium, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo 14040-901, Brazil.
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Flores RA, Dos-Santos RC, Rodrigues-Santos I, de Jesus AA, Antunes-Rodrigues J, Elias LLK. Tonic noradrenergic input to neurons in the dorsal raphe nucleus mediates food intake in male mice. Behav Brain Res 2024; 462:114872. [PMID: 38266779 DOI: 10.1016/j.bbr.2024.114872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/08/2024] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
The dorsal raphe nucleus (DRN) is essential for the control of food intake. Efferent projections from the DRN extend to several forebrain regions that are involved in the control of food intake. However, the neurotransmitters released in the DRN related to the control of food intake are not known. We have previously demonstrated that a tonic α1 action on DRN neurons contributes to satiety in the fed rats. In this study we investigated the participation of norepinephrine (NE) signaling in the DRN in the satiety response. Intra-DRN administration of NE causes an increase in the 2-hour food intake of sated mice, an effect that was blocked by previous administration of yohimbine, an α2 antagonist. Similarly, Intra-DRN administration of clonidine, an α2 agonist, increases food intake in sated mice. This result indicates that in the satiated mice exogenous NE acts on α2 receptors to increase food intake. Furthermore, administration of phenylephrine, an α1 agonist, decreases food intake in fasted mice and prazosin, an α1 antagonist, increases food intake in the sated mice. Taken together these results indicate that, in a satiated condition, a tonic α1 adrenergic action on the DRN neurons inhibits food intake and that exogenous NE administered to the DRN acts on α2 adrenergic receptors to increase food intake. These data reinforce the intricate neuronal functioning of the DRN and its effects on feeding.
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Affiliation(s)
- Rafael Appel Flores
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, 3900, Bandeirantes Av., Prof. Dr. Zeferino Vaz Building, ZIP Code: 14049-900, Ribeirão Preto, SP, Brazil.
| | - Raoni C Dos-Santos
- Department of Cell and Molecular Biology, Tulane University, 6602 Freret St, New Orleans, Percival Stern Hall, ZIP Code: 70118, New Orleans, Louisiana, USA.
| | - Isabelle Rodrigues-Santos
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, 3900, Bandeirantes Av., Prof. Dr. Zeferino Vaz Building, ZIP Code: 14049-900, Ribeirão Preto, SP, Brazil
| | - Aline Alves de Jesus
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, 3900, Bandeirantes Av., Prof. Dr. Zeferino Vaz Building, ZIP Code: 14049-900, Ribeirão Preto, SP, Brazil
| | - José Antunes-Rodrigues
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, 3900, Bandeirantes Av., Prof. Dr. Zeferino Vaz Building, ZIP Code: 14049-900, Ribeirão Preto, SP, Brazil
| | - Lucila L K Elias
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, 3900, Bandeirantes Av., Prof. Dr. Zeferino Vaz Building, ZIP Code: 14049-900, Ribeirão Preto, SP, Brazil.
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Uribe-Mariño A, Falconi-Sobrinho LL, Castiblanco-Urbina MA, Pigatto GR, Ullah F, da Silva JA, Coimbra NC. Alpha 1- and Beta-norepinephrinergic receptors of dorsomedial and ventromedial hypothalamic nuclei modulate panic attack-like defensive behaviour elicited by diencephalic GABAergic neurotransmission disinhibition. Pharmacol Biochem Behav 2024; 236:173710. [PMID: 38262489 DOI: 10.1016/j.pbb.2024.173710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/25/2024]
Abstract
Gamma-aminobutyric acid (GABA) disinhibition in medial hypothalamus (MH) nuclei of rats elicits some defensive reactions that are considered panic attack-like behaviours. Recent evidence showed that the norepinephrine-mediated system modulates fear-related defensive behaviours organised by MH neurons at least in part via noradrenergic receptors recruitment on midbrain tegmentum. However, it is unknown whether noradrenergic receptors of the MH also modulate the panic attack-like reactions. The aim of this work was to investigate the distribution of noradrenergic receptors in MH, and the effects of either α1-, α2- or β-noradrenergic receptors blockade in the MH on defensive behaviours elaborated by hypothalamic nuclei. Defensive behaviours were evaluated after the microinjection of the selective GABAA receptor antagonist bicuculline into the MH that was preceded by microinjection of either WB4101, RX821002, propranolol (α1-, α2- and β-noradrenergic receptor selective antagonists, respectively), or physiological saline into the MH of male Wistar rats. The α1-, α2- and β-noradrenergic receptors were found in neuronal perikarya of all MH nuclei, and the α2-noradrenergic receptor were also found on glial cells mainly situated in the ventrolateral division of the ventromedial hypothalamic nucleus. The α1- and β-noradrenergic receptors blockade in the MH decreased defensive attention and escape reactions elicited by the intra-MH microinjections of bicuculline. These findings suggest that, despite the profuse distributions of α1-, α2- and β-noradrenergic receptors in the MH, both α1- and β-noradrenergic receptor- rather than α2-noradrenergic receptor-signalling in MH are critical for the neuromodulation of panic-like behaviour.
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Affiliation(s)
- Andrés Uribe-Mariño
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Luiz Luciano Falconi-Sobrinho
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto 14220-030, São Paulo, Brazil
| | - Maria Angélica Castiblanco-Urbina
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Glauce Regina Pigatto
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto 14220-030, São Paulo, Brazil
| | - Farhad Ullah
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Department of Animal Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan; Department of Eastern Medicine and Surgery, School of Medical and Health Sciences of the University of Poonch Rawalakot, Azad Jammu and Kashmir, Pakistan
| | - Juliana Almeida da Silva
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto 14220-030, São Paulo, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto 14220-030, São Paulo, Brazil..
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Liu N, Fu C, Yu H, Wang Y, Shi L, Hao Y, Yuan F, Zhang X, Wang S. Respiratory Control by Phox2b-expressing Neurons in a Locus Coeruleus-preBötzinger Complex Circuit. Neurosci Bull 2020; 37:31-44. [PMID: 32468398 DOI: 10.1007/s12264-020-00519-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 03/12/2020] [Indexed: 02/06/2023] Open
Abstract
The locus coeruleus (LC) has been implicated in the control of breathing. Congenital central hypoventilation syndrome results from mutation of the paired-like homeobox 2b (Phox2b) gene that is expressed in LC neurons. The present study was designed to address whether stimulation of Phox2b-expressing LC (Phox2bLC) neurons affects breathing and to reveal the putative circuit mechanism. A Cre-dependent viral vector encoding a Gq-coupled human M3 muscarinic receptor (hM3Dq) was delivered into the LC of Phox2b-Cre mice. The hM3Dq-transduced neurons were pharmacologically activated while respiratory function was measured by plethysmography. We demonstrated that selective stimulation of Phox2bLC neurons significantly increased basal ventilation in conscious mice. Genetic ablation of these neurons markedly impaired hypercapnic ventilatory responses. Moreover, stimulation of Phox2bLC neurons enhanced the activity of preBötzinger complex neurons. Finally, axons of Phox2bLC neurons projected to the preBötzinger complex. Collectively, Phox2bLC neurons contribute to the control of breathing most likely via an LC-preBötzinger complex circuit.
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Affiliation(s)
- Na Liu
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China.,Department of Physiology, Cangzhou Medical College, Cangzhou, 061000, China
| | - Congrui Fu
- School of Nursing, Hebei Medical University, Shijiazhuang, 050000, China
| | - Hongxiao Yu
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yakun Wang
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China
| | - Luo Shi
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yinchao Hao
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China
| | - Fang Yuan
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China
| | - Xiangjian Zhang
- Hebei Key laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, 050000, China
| | - Sheng Wang
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, China.
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