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Ritter A, Habusha S, Givon L, Edut S, Klavir O. Prefrontal control of superior colliculus modulates innate escape behavior following adversity. Nat Commun 2024; 15:2158. [PMID: 38461293 PMCID: PMC10925020 DOI: 10.1038/s41467-024-46460-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 02/28/2024] [Indexed: 03/11/2024] Open
Abstract
Innate defensive responses, though primarily instinctive, must also be highly adaptive to changes in risk assessment. However, adaptive changes can become maladaptive, following severe stress, as seen in posttraumatic stress disorder (PTSD). In a series of experiments, we observed long-term changes in innate escape behavior of male mice towards a previously non-threatening stimulus following an adverse shock experience manifested as a shift in the threshold of threat response. By recording neural activity in the superior colliculus (SC) while phototagging specific responses to afferents, we established the crucial influence of input arriving at the SC from the medial prefrontal cortex (mPFC), both directly and indirectly, on escape-related activity after adverse shock experience. Inactivating these specific projections during the shock effectively abolished the observed changes. Conversely, optogenetically activating them during encounters controlled escape responses. This establishes the necessity and sufficiency of those specific mPFC inputs into the SC for adverse experience related changes in innate escape behavior.
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Affiliation(s)
- Ami Ritter
- School of Psychological Sciences, The University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, Israel
| | - Shlomi Habusha
- School of Psychological Sciences, The University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, Israel
| | - Lior Givon
- School of Psychological Sciences, The University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, Israel
| | - Shahaf Edut
- School of Psychological Sciences, The University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, Israel
| | - Oded Klavir
- School of Psychological Sciences, The University of Haifa, Haifa, Israel.
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, Israel.
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Falconi-Sobrinho LL, Anjos-Garcia TD, Rebelo MA, Hernandes PM, Almada RC, Tanus-Santos JE, Coimbra NC. The anterior cingulate cortex and its interface with the dorsal periaqueductal grey regulating nitric oxide-mediated panic-like behaviour and defensive antinociception. Neuropharmacology 2024; 245:109831. [PMID: 38160873 DOI: 10.1016/j.neuropharm.2023.109831] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
The anterior cingulate cortex (ACC) Cg1 (24b) area modulates glutamate-mediated unconditioned fear and antinociception organised by hypothalamus. However, it remains unknown whether 24b area also modulates these latter defensive responses through connections with the dorsal periaqueductal grey matter (dPAG), a midbrain structure implicated in the genesis of innate fear-induced defence. The aim of this work is to examine the correlation between the behavioural effects of intra-ACC microinjections of vehicle, NMDA (1 nmol) or lidocaine (2%) with Fos protein expression and nitrergic activity in the dPAG of male C57BL/6 mice that were threatened by snakes. In addition, the 24b area-dPAG pathways were also characterised by neural tract tracing procedures. Finally, the effect of dPAG pretreatment with the neuronal nitric oxide synthase inhibitor N(omega)-propyl-l-arginine (NPLA; 0.2, 0.4 or 0.8 nmol) 10 min before 24b area treatment with NMDA on behavioural and nociceptive responses of threatened mice was studied. The activation of 24b area N-methyl-d-aspartic acid receptors facilitated escape and freezing rather than risk assessment, and enhanced Fos expression and nitrite levels in dPAG, while lidocaine decreased escape and risk assessment as well as Fos and nitrergic activity in dPAG. In addition, dPAG pretreatment with NPLA suppressed intra-24b NMDA-facilitated panicogenic effects while increased nociception. Infusions of an antegrade neurotracer into 24b area showed axonal fibres surrounding both dorsomedial and dorsolateral PAG perikarya. Neurons were identified in 24b area after deposits of a retrograde neurotracer into dPAG. Our findings suggest that the ACC/24b area modulates innate defensive responses through the recruitment of dPAG nitrergic neurons.
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Affiliation(s)
- Luiz Luciano Falconi-Sobrinho
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil; Behavioural Neurosciences Institute (INeC), Psychobiology Division, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil.
| | - Tayllon Dos Anjos-Garcia
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil; Biomedical Sciences Institute of the Federal University of Alfenas (UNIFAL), Alfenas, Minas Gerais, Brazil
| | - Macário Arosti Rebelo
- Laboratory of Cardiovascular Pharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Paloma Molina Hernandes
- Laboratory of Neurobiology and Neurobiotechnology, Department of Biological Sciences, School of Science, Humanities and Languages, São Paulo State University (UNESP), Assis, São Paulo, Brazil
| | - Rafael Carvalho Almada
- Behavioural Neurosciences Institute (INeC), Psychobiology Division, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil; Laboratory of Neurobiology and Neurobiotechnology, Department of Biological Sciences, School of Science, Humanities and Languages, São Paulo State University (UNESP), Assis, São Paulo, Brazil
| | - Jose Eduardo Tanus-Santos
- Laboratory of Cardiovascular Pharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil; Behavioural Neurosciences Institute (INeC), Psychobiology Division, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil.
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de Paula Rodrigues BM, Falconi-Sobrinho LL, de Campos AC, Kanashiro A, Coimbra NC. Panicolytic-like effects of environment enrichment on male mice threatened by Bothrops jararaca lancehead pit vipers. J Neurosci Res 2024; 102:e25300. [PMID: 38361409 DOI: 10.1002/jnr.25300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 12/01/2023] [Accepted: 01/16/2024] [Indexed: 02/17/2024]
Abstract
Environment enrichment (EE) is a well-known eustress model showing beneficial effects in different psychiatric diseases, but its positive properties in panic disorders are not yet established. The confrontation between prey and predator in complex arenas has been validated as a putative panic attack model. The principal aim of this work was to investigate the role of the EE on panic-like defensive responses elicited by mice threatened by venomous snakes. After 6 weeks of exposure either to an enriched or standard environments, 36 male mice were habituated in a complex polygonal arena for snakes containing an artificial burrow and elevated platforms for escape. The animals were confronted by Bothrops jararaca for 5 min, and the following antipredatory responses were recorded: defensive attention, stretched attend posture, flat back approach, prey versus predator interaction, oriented escape behavior, time spent in a safe place, and number of crossings. Mice threatened by snakes displayed several antipredatory reactions as compared to the exploratory behavior of those animals submitted to a nonthreatening situation (toy snake) in the same environment. Notably, EE causes anxiolytic- and panicolytic-like effects significantly decreasing the defensive attention and time spent in safe places and significantly increasing both prey versus predator interaction and exploratory behavior. In conclusion, our data demonstrate that EE can alter the processing of fear modulation regarding both anxiety- and panic-like responses in a dangerous condition, significantly modifying the decision-making defensive strategy.
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Affiliation(s)
- Bruno Mangili de Paula Rodrigues
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- NAP-USP-Neurobiology of Emotions (NuPNE) Research Center, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, 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), Ribeirão Preto, Brazil
- NAP-USP-Neurobiology of Emotions (NuPNE) Research Center, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil
| | - Alline Cristina de Campos
- Pharmacology of Neuroplasticity Laboratory, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil
| | - Alexandre Kanashiro
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil
- Medical Sciences Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- NAP-USP-Neurobiology of Emotions (NuPNE) Research Center, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
- Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil
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Ho PC, Hsiao FY, Chiu SH, Lee SR, Yau HJ. A nigroincertal projection mediates aversion and enhances coping responses to potential threat. FASEB J 2023; 37:e23322. [PMID: 37983662 DOI: 10.1096/fj.202201989rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 11/01/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023]
Abstract
Recent studies have shown that the non-DA neurons in the ventral tegmental area (VTA) and substantia nigra (SN) not only modulate motivational behaviors but also regulate defensive behaviors. While zona incerta (ZI) is a threat-responsive substrate and receives innervations from the ventral midbrain, the function of the ventral midbrain-to-ZI connection remains poorly defined. Here, we demonstrate that the ZI receives heterogenous innervations from the ventral midbrain. By utilizing a retrograde AAV preferentially labeling non-DA neurons in the ventral midbrain, we found that ZI-projecting non-DA cells in the ventral midbrain are activated by restraint stress. We focused on the SN and found that SN-to-ZI GABAergic input is engaged by a predatory odor. Sustained pan-neuronal SN-to-ZI activation results in aversion and enhances defensive behaviors, likely through a disinhibition mechanism to recruit downstream brain regions that regulate defensive behaviors. Collectively, our results reveal a novel role of nigroincertal projection in mediating negative valence and regulating defensive behaviors.
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Affiliation(s)
- Ping-Chen Ho
- The Laboratory for Neural Circuits and Behaviors, Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
| | - Fu-Yun Hsiao
- The Laboratory for Neural Circuits and Behaviors, Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
| | - Shi-Hong Chiu
- School of Medicine, National Taiwan University, Taipei, Taiwan
| | - Syun-Ruei Lee
- The Laboratory for Neural Circuits and Behaviors, Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
| | - Hau-Jie Yau
- The Laboratory for Neural Circuits and Behaviors, Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
- Neurobiology and Cognitive Science Center, National Taiwan University, Taipei, Taiwan
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Taiwan University and Academia Sinica, Taipei, Taiwan
- Ph.D. Program in Translational Medicine, National Taiwan University and Academia Sinica, Taipei, Taiwan
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Falconi-Sobrinho LL, Dos Anjos-Garcia T, Hernandes PM, Rodrigues BMDP, Almada RC, Coimbra NC. Unravelling the dorsal periaqueductal grey matter NMDA receptors relevance in the nitric oxide-mediated panic‑like behaviour and defensive antinociception organised by the anterior hypothalamus of male mice. Psychopharmacology (Berl) 2023; 240:319-335. [PMID: 36648509 DOI: 10.1007/s00213-023-06309-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/31/2022] [Indexed: 01/18/2023]
Abstract
RATIONALE Previous studies suggested that the dorsal column of the periaqueductal grey matter (dPAG) can be a target of neural pathways from hypothalamic nuclei involved in triggering fear-related defensive responses. In turn, evidence is provided suggesting that microinjection of the nitric oxide (NO) donor SIN-1 into the anterior hypothalamus (AH) of mice evokes panic-like behaviours and fear-induced antinociception. However, it is unknown whether the dPAG of mice mediates these latter defensive responses organised by AH neurons. OBJECTIVES This study was designed to examine the role of dPAG in mediating SIN-1-evoked fear-induced defensive behavioural and antinociceptive responses organised in the AH of mice. METHODS First, neural tract tracing was performed to characterise the AH-dPAG pathways. Then, using neuropharmacological approaches, we evaluated the effects of dPAG pretreatment with either the non-selective synaptic blocker cobalt chloride (CoCl2; 1 mM/0.1 μL) or the competitive N-methyl-D-aspartate (NMDA) receptor antagonist LY235959 (0.1 nmol/0.1 μL) on defensive behaviours and antinociception induced by microinjections of SIN-1 in the AH of male C57BL/6 mice. RESULTS AlexaFluor488-conjugated dextran-labelled axonal fibres from AH neurons were identified in both dorsomedial and dorsolateral PAG columns. Furthermore, we showed that pre-treatment of the dPAG with either CoCl2 or LY235959 inhibited freezing and impaired oriented escape and antinociception induced by infusions of SIN-1 into the AH. CONCLUSIONS These findings suggest that the panic-like freezing and oriented escape defensive behaviours, and fear-induced antinociception elicited by intra-AH microinjections of SIN-1 depend on the activation of dPAG NMDA receptors.
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Affiliation(s)
- Luiz Luciano Falconi-Sobrinho
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- NAP-USP-Neurobiology of Emotions (NuPNE) Research Centre, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, São Paulo, 14220-030, Brazil.
| | - Tayllon Dos Anjos-Garcia
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
- Biomedical Sciences Institute of the Federal University of Alfenas (UNIFAL), Alfenas, Minas Gerais, Brazil
| | - Paloma Molina Hernandes
- Department of Biological Sciences, School of Science, Humanities and Languages, São Paulo State University (UNESP), Assis, São Paulo, Brazil
| | - Bruno Mangili de Paula Rodrigues
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Rafael Carvalho Almada
- Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, São Paulo, 14220-030, Brazil
- Department of Biological Sciences, School of Science, Humanities and Languages, São Paulo State University (UNESP), Assis, São Paulo, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- NAP-USP-Neurobiology of Emotions (NuPNE) Research Centre, Ribeirão Preto Medical School of the University of São Paulo (USP), Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, São Paulo, 14220-030, Brazil.
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Neostriatum neuronal TRPV 1-signalling mediates striatal anandamide at high concentration facilitatory influence on neostriato-nigral dishinhibitory GABAergic connections. Brain Res Bull 2023; 192:128-141. [PMID: 36414159 DOI: 10.1016/j.brainresbull.2022.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 11/21/2022]
Abstract
RATIONALE Several lines of evidence have demonstrated that the cannabinoid type 1 receptor (CB1) is found in the caudate nucleus and putamen (CPu) in addition to the substantia nigra pars reticulata (SNpr). Here, we investigated the role of endocannabinoid neuromodulation of striato-nigral disinhibitory projections on the activity of nigro-collicular GABAergic pathways that control the expression of unconditioned fear-related behavioural responses elicited by microinjections of the GABAA receptor selective antagonist bicuculline (BIC) in the deep layers of the superior colliculus (dlSC). METHODS Fluorescent neural tract tracers were deposited in either CPu or in SNpr. Wistar rats received injection of vehicle, anandamide (AEA), either at low (50 pmol) or high (100 pmol) concentrations in CPu followed by bicuculline microinjections in dlSC. RESULTS Connections between CPu, the SNpr and dlSC were demonstrated. The GABAA receptor blockade in dlSC elicited panic-like behaviour. AEA at the lowest concentration caused a panicolytic-like effect that was antagonised by the CPu pretreatment with AM251 at 100 pmol. AEA at the highest concentration caused a panicogenic-like effect that was antagonised by the CPu pretreatment with 6-iodonordihydrocapsaicin (6-I-CPS) at different concentrations (0.6, 6, 60 nmol). CONCLUSION These findings suggest that while pre-synaptic CB1-signalling subserves an indirect facilitatory effect of AEA on striato-nigral pathways causing panicolytic-like responses through midbrain tectum enhanced activity, post-synaptic TRPV1-signalling in CPu mediates AEA direct activation of striato-nigral disinhibitory pathways resulting in increasing dlSC neurons activity and a panicogenic-like response. All these actions seem to depend on the interface with the nigro-collicular inhibitory GABAergic pathways.
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de Paula Rodrigues BM, Coimbra NC. CB 1 receptor signalling mediates cannabidiol-induced panicolytic-like effects and defensive antinociception impairment in mice threatened by Bothrops jararaca lancehead pit vipers. J Psychopharmacol 2022; 36:1384-1396. [PMID: 35946605 DOI: 10.1177/02698811221115755] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Cannabis sativa-derived substances such as cannabidiol (CBD) have attracted increasing clinical interest and consist in a new perspective for treating some neurological and psychiatric diseases. AIMS The aim of this work was to investigate the effect of acute treatment with CBD on panic-like defensive responses displayed by mice threatened by the venomous snake Bothrops jararaca. METHODS Mice were habituated in the enriched polygonal arena for snake panic test. After recording the baseline responses of the tail-flick test, the prey were pretreated with intraperitoneal (i.p.) administrations of the endocannabinoid type 1 receptor (CB1) antagonist AM251 (selective cannabinoid 1 receptor antagonist with an IC50 of 8 nM) at different doses, which were followed after 10 min by i.p. treatment with CBD (3 mg/kg). Thirty minutes after treatment with CBD, mice were subjected to confrontations by B. jararaca for 5 min, and the following defensive responses were recorded: risk assessment, oriented escape behaviour, inhibitory avoidance and prey-versus-snake interactions. Immediately after the escape behaviour was exhibited, the tail-flick latencies were recorded every 5 min for 30 min. OUTCOMES Mice threatened by snakes displayed several anti-predatory defensive and innate fear-induced antinociception responses in comparison to the control. CBD significantly decreased the risk assessment and escape responses, with a consequent decrease in defensive antinociception. The CBD panicolytic effect was reversed by i.p. treatment with AM251. CONCLUSIONS These findings suggest that the anti-aversive effect of CBD depends at least in part on the recruitment of CB1 receptors.
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Affiliation(s)
- Bruno Mangili de Paula Rodrigues
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
- NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
- Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, 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), Ribeirão Preto, São Paulo, Brazil
- NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
- Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
- Behavioural Neurosciences Institute (INeC), Ribeirão Preto, São Paulo, Brazil
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de Figueiredo RM, Falconi-Sobrinho LL, Leite-Panissi CRA, Huston JP, Mattern C, de Carvalho MC, Coimbra NC. D 2-like receptor activation by intranasal dopamine attenuates fear responses induced by electrical stimulation of the dorsal periaqueductal grey matter, but fails to reduce aversion to pit vipers and T-maze performance. J Psychopharmacol 2022; 36:1257-1272. [PMID: 36239034 DOI: 10.1177/02698811221128018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Panic-like reactions elicited by electrical stimulation of the dorsal periaqueductal grey matter (ES-dPAG) seem to be regulated by dopamine (DA). We showed that DA applied intranasally (IN) increased escape-behaviour thresholds induced by ES-dPAG of rats, indicating a panicolytic-like effect. AIMS We investigated whether IN-DA increases escape-response thresholds induced by ES-dPAG by acting on D2-like receptors, and whether IN-DA affects escape responses elicited by the presence of a potential predator and by open space and height of the elevated T-maze (ETM) as well as motor performance in the open field (OF) test. METHODS Wistar rats exposed to ES-dPAG were treated with Sulpiride (SUL, 40 mg/kg, D2-like receptor antagonist) previously IN-DA (2 mg/kg). Independent groups of rats treated with IN-DA were submitted to prey versus snake paradigm (PSP), ETM and OF. RESULTS Anti-aversive effects of the IN-DA were reduced by SUL pretreatment in the ES-dPAG test. IN-DA did not affect the escape number in the PSP nor the escape latencies in the ETM as well as motor performance in the OF. CONCLUSIONS/INTERPRETATION The IN-DA effects in reducing unconditioned fear responses elicited by ES-dPAG seem to be mediated by D2-like receptors. The lack of effects on panic-related responses in the ETM and PSP may be related to the possibility of avoiding the danger inherent to these models, a defence strategy not available during ES-dPAG. These findings cannot be attributed to motor performance. The decision-making responses to avoid dangerous situations can be orchestrated by supra-mesencephalic structures connected by non-dopaminergic inputs.
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Affiliation(s)
- Rebeca Machado de Figueiredo
- Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
| | - Luiz Luciano Falconi-Sobrinho
- Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
| | - Christie Ramos Andrade Leite-Panissi
- Department of Psychology, Ribeirão Preto School of Philosophy, Science and Literature of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
| | - Joseph P Huston
- Centre for Behavioural Neuroscience, Institute of Experimental Psychology, Heinrich-Heine University of Düsseldorf, Germany
| | - Claudia Mattern
- MetP Pharma AG, Emmetten, Switzerland, and Oceanographic Centre, Nova Southeastern University, Fl, USA
| | - Milene Cristina de Carvalho
- Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
| | - Norberto Cysne Coimbra
- Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
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Almada RC, Falconi-Sobrinho LL, da Silva JA, Wotjak CT, Coimbra NC. Augmented anandamide signalling in the substantia nigra pars reticulata mediates panicolytic-like effects in mice confronted by Crotalus durissus terrificus pit vipers. Psychopharmacology (Berl) 2022; 239:2753-2769. [PMID: 35650304 DOI: 10.1007/s00213-022-06127-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 03/26/2022] [Indexed: 12/30/2022]
Abstract
RATIONALE The endocannabinoid modulation of fear and anxiety due to the on-demand synthesis and degradation is supported by a large body of research. Although it has been proposed that anandamide (AEA) in the substantia nigra pars reticulata (SNpr) seems to be important for the organisation of innate fear-related behaviours, a role for endogenous AEA has yet to be clarified. METHODS Mice were treated with the fatty acid amide hydrolase (FAAH) selective inhibitor URB597 at different concentrations (0.01, 0.1, 1 nmol/0.1 µL) in the SNpr and confronted by rattlesnakes (Crotalus durissus terrificus). The most effective dose of URB597 (1 nmol) was also preceded by microinjections of the CB1 receptor antagonist AM251 (0.1 nmol) into the SNpr, and mice were then confronted by the venomous snake. RESULTS URB597 (0.1 and 1 nmol) in the SNpr decreased the expression of defensive behaviours such as defensive attention, escape, and time spent inside the burrow of mice confronted by rattlesnakes. Moreover, pretreatment of SNpr with AM251 suppressed these antiaversive effects of URB597 in this midbrain structure. CONCLUSION Overall, these data clearly indicate that the panicolytic consequences of endogenous AEA enhancement in the SNpr are mediated by CB1 receptor signalling.
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Affiliation(s)
- Rafael C Almada
- 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.,Department of Biological Sciences, School of Science, Humanities and Languages, São Paulo State University (UNESP), Assis, 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, São Paulo, 14049-900, Brazil.,Behavioural Neurosciences Institute (INeC), São Paulo, Ribeirão Preto, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Juliana A 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, São Paulo, 14049-900, Brazil.,Behavioural Neurosciences Institute (INeC), São Paulo, Ribeirão Preto, Brazil
| | - Carsten T Wotjak
- Laboratory of Neuronal Plasticity, Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany.,Central Nervous System Diseases Research, Boehringer Ingelheim Pharmaceuticals Gesellschaft Mit Beschränkter Haftung & Compagnie Kommanditgesellschaft, Biberach an der Riß, Germany
| | - Norberto C 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. .,Behavioural Neurosciences Institute (INeC), São Paulo, Ribeirão Preto, Brazil. .,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil. .,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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10
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Menon NM, Carr JA. Anxiety-like behavior and tectal gene expression in a foraging/predator avoidance tradeoff task using adult African clawed frogs Xenopus laevis. Behav Ecol Sociobiol 2022. [DOI: 10.1007/s00265-022-03219-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Barroca NCB, Della Santa G, Suchecki D, García-Cairasco N, Umeoka EHDL. Challenges in the use of animal models and perspectives for a translational view of stress and psychopathologies. Neurosci Biobehav Rev 2022; 140:104771. [PMID: 35817171 DOI: 10.1016/j.neubiorev.2022.104771] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/15/2022] [Accepted: 07/05/2022] [Indexed: 12/25/2022]
Abstract
The neurobiology and development of treatments for stress-related neuropsychiatric disorders rely heavily on animal models. However, the complexity of these disorders makes it difficult to model them entirely, so only specific features of human psychopathology are emulated and these models should be used with great caution. Importantly, the effects of stress depend on multiple factors, like duration, context of exposure, and individual variability. Here we present a review on pre-clinical studies of stress-related disorders, especially those developed to model posttraumatic stress disorder, major depression, and anxiety. Animal models provide relevant evidence of the underpinnings of these disorders, as long as face, construct, and predictive validities are fulfilled. The translational challenges faced by scholars include reductionism and anthropomorphic/anthropocentric interpretation of the results instead of a more naturalistic and evolutionary understanding of animal behavior that must be overcome to offer a meaningful model. Other limitations are low statistical power of analysis, poor evaluation of individual variability, sex differences, and possible conflicting effects of stressors depending on specific windows in the lifespan.
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Affiliation(s)
- Nayara Cobra Barreiro Barroca
- Department of Neuroscience and Behavioral Science, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Giovanna Della Santa
- Department of Neuroscience and Behavioral Science, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Deborah Suchecki
- Department of Psychobiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Norberto García-Cairasco
- Department of Neuroscience and Behavioral Science, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil; Department of Physiology, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Eduardo Henrique de Lima Umeoka
- Department of Neuroscience and Behavioral Science, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil; School of Medicine, University Center UniCerrado, Goiatuba, GO, Brazil
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12
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Dos Anjos-Garcia T, Kanashiro A, de Campos AC, Coimbra NC. Environmental Enrichment Facilitates Anxiety in Conflict-Based Tests but Inhibits Predator Threat-Induced Defensive Behaviour in Male Mice. Neuropsychobiology 2022; 81:225-236. [PMID: 35026760 DOI: 10.1159/000521184] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 11/24/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Environmental enrichment (EE) is a useful and sophisticated tool that improves rodents' well-being by stimulating social behaviour and cognitive, motor, and sensory functions. Exposure to EE induces neuroplasticity in different brain areas, including the limbic system, which has been implicated in the control of anxiety and fear. However, the effects of EE on ethologically relevant naturalistic behaviours, such as those displayed by prey in the presence of predators, remain largely unexplored. MATERIAL AND METHODS In the present study, we investigated anxiety- and panic attack-like behaviours in a predator (cat)-prey confrontation paradigm and compared them with those in classical assays, such as the elevated plus-maze (EPM), marble-burying, and open field tests (OFTs), using C57BL/6J male mice housed in enriched or standard environments for 6 weeks. RESULTS We observed that EE exposure caused enhancement of the levels of anxiety-like behaviours in the EPM and OFTs, increasing risk assessment (an anxiety-related response), and decreasing escape (a panic attack-like response) behaviours during exposure to the predator versus prey confrontation paradigm. CONCLUSION Taken together, our findings suggest that enriched external environments can modify the processing of fear- and anxiety-related stimuli in dangerous situations, changing the decision-making defensive strategy.
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Affiliation(s)
- Tayllon Dos Anjos-Garcia
- Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil.,Behavioural Neurosciences Institute (INeC), São Paulo, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, São Paulo, Brazil
| | - Alexandre Kanashiro
- Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, São Paulo, Brazil.,Division of Neurology, Department of Neuroscience and Behavioural Sciences, Post-Graduation Program in Neurology/Neurosciences, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil
| | - Alline Cristina de Campos
- Department of Pharmacology, Pharmacology of Neuroplasticity Laboratory, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Norberto Cysne Coimbra
- Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil.,Behavioural Neurosciences Institute (INeC), São Paulo, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, São Paulo, Brazil.,Division of Neurology, Department of Neuroscience and Behavioural Sciences, Post-Graduation Program in Neurology/Neurosciences, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), São Paulo, Brazil
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13
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Medeiros P, Medeiros AC, Coimbra JPC, de Paiva Teixeira LEP, Salgado-Rohner CJ, da Silva JA, Coimbra NC, de Freitas RL. Physical, Emotional, and Social Pain During COVID-19 Pandemic-Related Social Isolation. TRENDS IN PSYCHOLOGY 2022. [PMCID: PMC8886700 DOI: 10.1007/s43076-022-00149-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The socio-emotional condition during the COVID-19 pandemic subsidises the (re)modulation of interactive neural circuits underlying risk assessment behaviour at the physical, emotional, and social levels. Experiences of social isolation, exclusion, or affective loss are generally considered some of the most “painful” things that people endure. The threats of social disconnection are processed by some of the same neural structures that process basic threats to survival. The lack of social connection can be “painful” due to an overlap in the neural circuitry responsible for both physical and emotional pain related to feelings of social rejection. Indeed, many of us go to great lengths to avoid situations that may engender these experiences. Accordingly, this work focuses on pandemic times; the somatisation mentioned above seeks the interconnection and/or interdependence between neural systems related to emotional and cognitive processes such that a person involved in an aversive social environment becomes aware of himself, others, and the threatening situation experienced and takes steps to avoid daily psychological and neuropsychiatric effects. Social distancing during isolation evokes the formation of social distress, increasing the intensity of learned fear that people acquire, consequently enhancing emotional and social pain.
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Affiliation(s)
- 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, São Paulo, Ribeirão Preto 14049-900 Brazil
- Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, São Paulo, Ribeirão Preto 14049-900 Brazil
| | - Ana Carolina Medeiros
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, São Paulo, Ribeirão Preto 14049-900 Brazil
- Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, São Paulo, Ribeirão Preto 14049-900 Brazil
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, São Paulo, Ribeirão Preto 14050-220 Brazil
| | - Jade Pisssamiglio Cysne Coimbra
- Pontificial Catholic University of Campinas (PUC-Campinas), Prof Dr Euryclides de Jesus Zerbini Str., 1516, Parque Rural Fazenda Santa Cândida, Campinas, São Paulo, 13087-571 Brazil
| | | | - Carlos José Salgado-Rohner
- NeuroSmart Lab, International School of Economics and Administrative Sciences, Universidad de La Sabana, Chia, Colombia
| | - José Aparecido da Silva
- Laboratory of Psychophysics, Perception, Psychometrics, and Pain, Department of Psychology, Ribeirão Preto School of Philosophy, Sciences and Literature of the University of São Paulo (FFCLRP-USP), São Paulo, Ribeirão Preto 14049-901 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, São Paulo, Ribeirão Preto 14049-900 Brazil
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, São Paulo, Ribeirão Preto 14050-220 Brazil
| | - Renato Leonardo de Freitas
- Laboratory of Neurosciences of Pain & Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, São Paulo, Ribeirão Preto 14049-900 Brazil
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, São Paulo, Ribeirão Preto 14050-220 Brazil
- Biomedical Sciences Institute, Federal University of Alfenas (UNIFAL-MG), Gabriel Monteiro da Silva Str., 700, Alfenas, Minas Gerais 37130-000 Brazil
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14
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Ferreira-Sgobbi R, de Figueiredo RM, Frias AT, Matthiesen M, Batistela MF, Falconi-Sobrinho LL, Vilela-Costa HH, Sá SI, Lovick TA, Zangrossi H, Coimbra NC. Panic-like responses of female Wistar rats confronted by Bothrops alternatus pit vipers, or exposure to acute hypoxia: Effect of oestrous cycle. Eur J Neurosci 2021; 55:32-48. [PMID: 34850475 DOI: 10.1111/ejn.15548] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/22/2021] [Accepted: 11/14/2021] [Indexed: 02/02/2023]
Abstract
Anxiety-related diseases are more than twice as common in women than in men, and in women, symptoms may be exacerbated during the late luteal phase of the menstrual cycle. Despite this, most research into the underlying mechanisms, which drives drug development, have been carried out using male animals. In an effort to redress this imbalance, we compared responses of male and female Wistar rats during exposure to two unconditioned threatening stimuli that evoke panic-related defensive behaviours: confrontation with a predator (Bothrops alternatus) and acute exposure to hypoxia (7% O2 ). Threatened by venomous snake, male and female rats initially displayed defensive attention, risk assessment, and cautious interaction with the snake, progressing to defensive immobility to overt escape. Both males and females displayed higher levels of risk assessment but less interaction with the predator. They also spent more time in the burrow, displaying inhibitory avoidance, and more time engaged in defensive attention, and non-oriented escape behaviour. In females, anxiety-like behaviour was most pronounced in the oestrous and proestrus phases whereas panic-like behaviour was more pronounced during the dioestrus phase, particularly during late dioestrus. Acute hypoxia evoked panic-like behaviour (undirected jumping) in both sexes, but in females, responsiveness in late dioestrus was significantly greater than at other stages of the cycle. The results reveal that females respond in a qualitatively similar manner to males during exposure to naturally occurring threatening stimuli, but the responses of females is oestrous cycle dependent with a significant exacerbation of panic-like behaviour in the late dioestrus phase.
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Affiliation(s)
- Renata Ferreira-Sgobbi
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,Laboratory of Neuropsychopharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,Department of Psychology, Division of Psychobiology, Ribeirão Preto School of Philosophy, Sciences and Literature of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil.,Behaviour of Snakes Division-MEDUSA Project, Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil
| | - Rebeca Machado de Figueiredo
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil
| | - Alana Tercino Frias
- Laboratory of Neuropsychopharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil
| | - Melina Matthiesen
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,Laboratory of Neuropsychopharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil
| | - Matheus Fitipaldi Batistela
- Laboratory of Neuropsychopharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil
| | - Luiz Luciano Falconi-Sobrinho
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil.,Behaviour of Snakes Division-MEDUSA Project, Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil
| | - Heloísa Helena Vilela-Costa
- Laboratory of Neuropsychopharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil
| | - Susana Isabel Sá
- Unidade de Anatomia, Departamento de Biomedicina, Faculdade de Medicina da Universidade de Porto, Porto, Portugal
| | - Thelma Anderson Lovick
- Behaviour of Snakes Division-MEDUSA Project, Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil.,School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, UK
| | - Hélio Zangrossi
- Laboratory of Neuropsychopharmacology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil.,Behaviour of Snakes Division-MEDUSA Project, Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil.,Behaviour of Snakes Division-MEDUSA Project, Behavioural Neurosciences Institute (INeC), Ribeirão Preto, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo, Ribeirão Preto, Brazil
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15
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Soares VPMN, de Andrade TGCS, Canteras NS, Coimbra NC, Wotjak CT, Almada RC. Orexin 1 and 2 Receptors in the Prelimbic Cortex Modulate Threat Valuation. Neuroscience 2021; 468:158-167. [PMID: 34126185 DOI: 10.1016/j.neuroscience.2021.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/10/2021] [Accepted: 06/03/2021] [Indexed: 12/21/2022]
Abstract
The ability to distinguish between threatening (repulsors), neutral and appetitive stimuli (attractors) stimuli is essential for survival. The orexinergic neurons of hypothalamus send projections to the limbic structures, such as different subregions of the medial prefrontal cortex (mPFC), suggesting that the orexinergic mechanism in the prelimbic cortex (PL) is involved in the processing of fear and anxiety. We investigated the role of orexin receptors type 1 (OX1R) and type 2 (OX2R) in the PL in such processes upon confrontation with an erratically moving robo-beetle in mice. The selective blockade of OX1R and OX2R in the PL with SB 334867 (3, 30, 300 nM) and TCS OX2 29 (3, 30, 300 nM), respectively, did not affect general exploratory behavior or reactive fear such as avoidance, jumping or freezing, but significantly enhances tolerance and approach behavior at the highest dose of each antagonist tested (300 nM). We interpret these findings as evidence for an altered cognitive appraisal of the potential threatening stimulus. Consequently, the orexin system seems to bias the perception of stimuli towards danger or threat via OX1R and OX2R in the PL.
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Affiliation(s)
- Victor P M N Soares
- Department of Biological Sciences, School of Sciences, Humanities and Languages of the São Paulo State University (UNESP), Assis, São Paulo, Brazil
| | - Telma G C S de Andrade
- Department of Biological Sciences, School of Sciences, Humanities and Languages of the São Paulo State University (UNESP), Assis, São Paulo, Brazil
| | - Newton S Canteras
- Department of Anatomy, Biomedical Sciences Institute of the University of São Paulo (ICB-USP), São Paulo, São Paulo, Brazil
| | - Norberto C Coimbra
- Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil; Behavioural Neuroscience Institute (INeC), Ribeirão Preto, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Carsten T Wotjak
- Neuronal Plasticity Research Group, Max Planck Institute of Psychiatry, Munich, Germany; Central Nervous System Diseases Research, Boehringer Ingelheim Pharmaceuticals Die Gesellschaft mit Beschränkter Haftung & Compagnie Kommanditgesellschaft, Biberach Riss, Germany
| | - Rafael C Almada
- Department of Biological Sciences, School of Sciences, Humanities and Languages of the São Paulo State University (UNESP), Assis, São Paulo, Brazil; Behavioural Neuroscience Institute (INeC), Ribeirão Preto, São Paulo, Brazil.
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16
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Falconi-Sobrinho LL, Dos Anjos-Garcia T, Coimbra NC. Nitric oxide-mediated defensive and antinociceptive responses organised at the anterior hypothalamus of mice are modulated by glutamatergic inputs from area 24b of the cingulate cortex. J Psychopharmacol 2021; 35:78-90. [PMID: 33300404 DOI: 10.1177/0269881120967881] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Previous studies suggested that Cg1 area of the cingulate cortex of rats controls glutamate-mediated fear-induced defensive behaviour and antinociception organised at the posterior hypothalamus. In turn, microinjection of the nitric oxide donor SIN-1 into the anterior hypothalamus of mice produced defensive behaviours and fear-induced antinociception. However, it remains unknown whether Cg1 also modulates the latter mechanisms in mice. AIMS The present study examined the influence of Cg1 on SIN1-evoked fear-induced defensive behaviour and antinociception organised at the anterior hypothalamus of mice. METHODS The fear-like behavioural and antinociceptive responses to the microinjection of SIN-1 (300 nmol) into the anterior hypothalamus were evaluated after the microinjection of either N-methyl-D-aspartic acid receptor agonist (0.1, 1 and 10 nmol) or physiological saline into the cingulate cortex of C57BL/6 male mice. In addition, neurotracing and immunohistochemistry were used to characterise Cg1-anterior hypothalamus glutamatergic pathways. RESULTS The data showed that activation of Cg1 N-methyl-D-aspartic acid receptors increased escape while reducing freezing and antinociceptive responses to SIN-1 microinjections into the anterior hypothalamus. Anterograde neural tract tracer co-localised with VGLUT2-labelled fibres suggests these responses are mediated by glutamatergic synapses at the anterior hypothalamus. CONCLUSIONS In contrast with previous studies showing that Cg1 facilitates both escape and antinociception to chemical stimulation of the posterior hypothalamus in rats, the present data suggest that Cg1 facilitates escape while inhibiting defensive antinociception produced by the microinjection of SIN-1 in the anterior hypothalamus of mice. Accordingly, Cg1 may have opposite effects on antinociceptive responses organised in the anterior and posterior hypothalamus of mice and rats, respectively.
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Affiliation(s)
- Luiz Luciano Falconi-Sobrinho
- Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brasil.,NAP-USP-Neurobiology of Emotions Research Centre, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brasil.,Behavioural Neurosciences Institute, Ribeirão Preto, São Paulo, Brasil
| | - Tayllon Dos Anjos-Garcia
- Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brasil.,NAP-USP-Neurobiology of Emotions Research Centre, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Norberto Cysne Coimbra
- Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brasil.,NAP-USP-Neurobiology of Emotions Research Centre, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brasil.,Behavioural Neurosciences Institute, Ribeirão Preto, São Paulo, Brasil
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17
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Linares IMP, Nardi AE, Guimarães FS, Arrais KC, Chagas MH, Osório FL, Hallak JE, Zuardi AW, Coimbra NC, Crippa JA. Increased body sway in phobic patients exposed to images of spiders. BRAZILIAN JOURNAL OF PSYCHIATRY 2020; 43:477-483. [PMID: 33331404 PMCID: PMC8555649 DOI: 10.1590/1516-4446-2020-1466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/12/2020] [Indexed: 11/22/2022]
Abstract
Objective: The aim of the present study was to analyze the body sway response in specific phobia (SP) patients and healthy controls while viewing neutral, phobic, and disgusting images. Methods: The participants’ heart rate (HR) and skin conductance were also recorded during the procedure. Nineteen patients with arachnophobia and 19 healthy volunteers matched by age, gender, and years of education underwent a postural control test on a stabilometric platform. Results: The platform recorded increased body sway in the SP group when exposed to spider images (SPI). The SP group presented increases in most parameters (SD, velocity, frequency, area, p ≤ 0.05) when viewing pictures of the SPI category. Psychometric measures of subjective anxiety (State-Trait Anxiety Inventory, STAI) and physiological states (HR; skin conductance responses; spontaneous fluctuations in skin conductance) showed increased anxiety (p ≤ 0.05) in the SP group compared to healthy volunteers. High anxiety levels were observed throughout the assessment, including the task of exposure to SPI (p ≤ 0.05). No significant effect or correlation was found between skin conductance and body sway measures (p > 0.05). Conclusions: The results of the postural control test suggest the occurrence of a defensive escape response in SP, in agreement with previous evidence.
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Affiliation(s)
- Ila M P Linares
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Antonio E Nardi
- Laboratório de Pânico e Respiração, Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Francisco S Guimarães
- Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - Katia C Arrais
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Marcos H Chagas
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Flavia L Osório
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Jaime E Hallak
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Antonio W Zuardi
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Norberto C Coimbra
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções, Núcleos de Apoio à Pesquisa, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - José A Crippa
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
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18
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Almada RC, Dos Anjos-Garcia T, da Silva JA, Pigatto GR, Wotjak CT, Coimbra NC. The modulation of striatonigral and nigrotectal pathways by CB1 signalling in the substantia nigra pars reticulata regulates panic elicited in mice by urutu-cruzeiro lancehead pit vipers. Behav Brain Res 2020; 401:112996. [PMID: 33171147 DOI: 10.1016/j.bbr.2020.112996] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 01/08/2023]
Abstract
Cannabinoid receptor type 1 (CB1R) is widely distributed in the substantia nigra pars reticulata (SNpr). However, the role of CB1R at the SNpr level in threatening situations is poorly understood. We investigated the role of CB1R in the SNpr on the expression of fear responses in mice confronted with urutu-cruzeiro pit vipers. First, a bidirectional neurotracer was injected into the SNpr; then, immunostaining of the vesicular GABA transporter was conducted at the levels of the striatum (CPu) and deep layers of the superior colliculus (dlSC). In addition, CB1R immunostaining and GABA labelling were performed in the SNpr. Using a prey-versus-snake paradigm, mice were pretreated with the CB1R antagonist AM251 (100 pmol) and treated with the endocannabinoid anandamide (AEA, 5 pmol) in the SNpr, followed by bicuculline (40 ng) in the dlSC, and were then confronted with a snake. Bidirectional neural tract tracers associated with immunofluorescence showed the GABAergic striatonigral disinhibitory and nigrotectal inhibitory pathways. Furthermore, we showed that CB1R labelling was restricted to axonal fibres surrounding SNpr GABAergic cells. We also demonstrated a decrease in the defensive behaviours of mice treated with AEA in the SNpr, but this effect was blocked by pre-treatment with AM251 in this structure. Taken together, our results show that the panicolytic consequences of the AEA enhancement in the SNpr are signalled by CB1R, suggesting that CB1R localised in axon terminals of CPu GABAergic neurons in the SNpr modulates the activity of the nigrotectal GABAergic pathway during the expression of defensive behaviours in threatening situations.
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Affiliation(s)
- Rafael Carvalho Almada
- School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto, 14049-900, São Paulo, Brazil; Max Planck Institute of Psychiatry, Department of Stress Neurobiology and Neurogenetics, Laboratory of Neuronal Plasticity, Kraepelinstrasse 2-10, 80804, Munich, Germany; Behavioural Neuroscience Institute (INeC), Av. do Café, 2450, Ribeirão Preto, 14050-220, São Paulo, Brazil; Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil
| | - Tayllon Dos Anjos-Garcia
- School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto, 14049-900, São Paulo, Brazil; Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil
| | - Juliana Almeida da Silva
- School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto, 14049-900, São Paulo, Brazil; Behavioural Neuroscience Institute (INeC), Av. do Café, 2450, Ribeirão Preto, 14050-220, São Paulo, Brazil
| | - Glauce Regina Pigatto
- School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto, 14049-900, São Paulo, Brazil
| | - Carsten T Wotjak
- Max Planck Institute of Psychiatry, Department of Stress Neurobiology and Neurogenetics, Laboratory of Neuronal Plasticity, Kraepelinstrasse 2-10, 80804, Munich, Germany
| | - Norberto Cysne Coimbra
- School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Department of Pharmacology, Laboratory of Neuroanatomy and Neuropsychobiology, Ribeirão Preto, 14049-900, São Paulo, Brazil; Behavioural Neuroscience Institute (INeC), Av. do Café, 2450, Ribeirão Preto, 14050-220, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), School of Medicine of Ribeirão Preto of the University of São Paulo, Ribeirão Preto, 14049-900, São Paulo, Brazil; Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil.
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19
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The neuropathological basis of anxiety in Parkinson’s disease. Med Hypotheses 2020; 144:110048. [DOI: 10.1016/j.mehy.2020.110048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/22/2020] [Accepted: 06/25/2020] [Indexed: 11/19/2022]
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20
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Endocannabinoid neuromodulation in the neostriatum decreases the GABAergic striato-nigral disinhibitory function and increases the nigro-collicular inhibitory pathway activity. J Neural Transm (Vienna) 2020; 127:1199-1208. [DOI: 10.1007/s00702-020-02217-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 06/02/2020] [Indexed: 02/06/2023]
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21
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Mendes-Gomes J, Paschoalin-Maurin T, Donaldson LF, Lumb BM, Blanchard DC, Coimbra NC. Repeated exposure of naïve and peripheral nerve-injured mice to a snake as an experimental model of post-traumatic stress disorder and its co-morbidity with neuropathic pain. Brain Res 2020; 1744:146907. [PMID: 32474017 DOI: 10.1016/j.brainres.2020.146907] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 05/11/2020] [Accepted: 05/25/2020] [Indexed: 01/08/2023]
Abstract
Confrontation of rodents by natural predators provides a number of advantages as a model for traumatic or stressful experience. Using this approach, one of the aims of this study was to investigate a model for the study of post-traumatic stress disorder (PTSD)-related behaviour in mice. Moreover, because PTSD can facilitate the establishment of chronic pain (CP), and in the same way, patients with CP have an increased tendency to develop PTSD when exposed to a traumatic event, our second aim was to analyse whether this comorbidity can be verified in the new paradigm. C57BL/6 male mice underwent chronic constriction injury of the sciatic nerve (CCI), a model of neuropathic CP, or not (sham groups) and were submitted to different threatening situations. Threatened mice exhibited enhanced defensive behaviours, as well as significantly enhanced risk assessment and escape behaviours during context reexposure. Previous snake exposure reduced open-arm time in the elevated plus-maze test, suggesting an increase in anxiety levels. Sham mice showed fear-induced antinociception immediately after a second exposure to the snake, but 1 week later, they exhibited allodynia, suggesting that multiple exposures to the snake led to increased nociceptive responses. Moreover, after reexposure to the aversive environment, allodynia was maintained. CCI alone produced intense allodynia, which was unaltered by exposure to either the snake stimuli or reexposure to the experimental context. Together, these results specifically parallel the behavioural symptoms of PTSD, suggesting that the snake/exuvia/reexposure procedure may constitute a useful animal model to study PTSD.
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Affiliation(s)
- Joyce Mendes-Gomes
- 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; Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900 São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, 14050-220 São Paulo, Brazil; Dracena Medical School (UNIFADRA-FUNDEC), Rua Bahia, 332, Dracena, 17900-000 São Paulo, Brazil
| | - Tatiana Paschoalin-Maurin
- 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; Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900 São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, 14050-220 São Paulo, Brazil
| | - Lucy F Donaldson
- Arthritis Research UK Pain Centre and School of Life Sciences, QMC, University of Nottingham, Nottingham NG7 2UH, United Kingdom
| | - Bridget M Lumb
- School of Physiology, Pharmacology & Neuroscience, Medical Sciences Building, University of Bristol, Bristol BS8 1TD, United Kingdom
| | - D Caroline Blanchard
- Pacific Biosciences Research Centre, University of Hawaii at Manoa, Honolulu, HI 96822, USA
| | - 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; Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900 São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, 14050-220 São Paulo, Brazil; University of São Paulo Neurobiology of Emotions Research Centre (NAP-USP-NuPNE), Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, 14049-900 São Paulo, Brazil.
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22
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Calvo F, Almada RC, da Silva JA, Medeiros P, da Silva Soares R, de Paiva YB, Roncon CM, Coimbra NC. The Blockade of µ1- and κ-Opioid Receptors in the Inferior Colliculus Decreases the Expression of Panic Attack-Like Behaviours Induced by Chemical Stimulation of the Dorsal Midbrain. Neuropsychobiology 2020; 78:218-228. [PMID: 31514182 DOI: 10.1159/000502439] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/22/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Gamma-aminobutyric acid (GABA)ergic and opioid systems play a crucial role in the neural modulation of innate fear organised by the inferior colliculus (IC). In addition, the IC is rich in GABAergic fibres and opioid neurons, which are also connected to other mesencephalic structures, such as the superior colliculus and the substantia nigra. However, the contribution of distinct opioid receptors (ORs) in the IC during the elaboration and expression of innate fear and panic-like responses is unclear. The purpose of the present work was to investigate a possible integrated action exerted by ORs and the GABAA receptor-mediated system in the IC on panic-like responses. METHODS The effect of the blockade of either µ1- or κ-ORs in the IC was evaluated in the unconditioned fear-induced responses elicited by GABAA antagonism with bicuculline. Microinjections of naloxonazine, a µ1-OR antagonist, or nor-binaltorphimine (nor-BNI), a κ-OR antagonist, were made into the IC, followed by intramesencephalic administration of the GABAA-receptor antagonist bicuculline. The defensive behaviours elicited by the treatments in the IC were quantitatively analysed, recording the number of escapes expressed as running (crossing), jumps, and rotations, over a 30-min period in a circular arena. The exploratory behaviour of rearing was also recorded. RESULTS GABAA-receptor blockade with bicuculline in the IC increased defensive behaviours. However, pretreatment of the IC with higher doses (5 µg) of naloxonazine or nor-BNI followed by bicuculline resulted in a significant decrease in unconditioned fear-induced responses. CONCLUSIONS These findings suggest a role played by µ1- and κ-OR-containing connexions and GABAA receptor-mediated neurotransmission on the organisation of panic attack-related responses elaborated by the IC neurons.
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Affiliation(s)
- Fabrício Calvo
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Department of Pharmacology, São Lucas College, Porto Velho, Brazil.,Aparício Carvalho Integrative College (FIMCA), Porto Velho, Brazil
| | - Rafael Carvalho Almada
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Institute of Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
| | - Juliana Almeida da Silva
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Institute of Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil
| | - Priscila Medeiros
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
| | - Raimundo da Silva Soares
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
| | - Yara Bezerra de Paiva
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
| | - Camila Marroni Roncon
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Assis County Educational Foundation (FEMA), Assis, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil, .,Institute of Neuroscience and Behaviour (INeC), Ribeirão Preto, Brazil, .,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil,
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23
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Khan AU, Falconi-Sobrinho LL, Dos Anjos-Garcia T, de Fátima Dos Santos Sampaio M, de Souza Crippa JA, Menescal-de-Oliveira L, Coimbra NC. Cannabidiol-induced panicolytic-like effects and fear-induced antinociception impairment: the role of the CB 1 receptor in the ventromedial hypothalamus. Psychopharmacology (Berl) 2020; 237:1063-1079. [PMID: 31919563 DOI: 10.1007/s00213-019-05435-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 12/11/2019] [Indexed: 12/19/2022]
Abstract
RATIONALE The behavioural effects elicited by chemical constituents of Cannabis sativa, such as cannabidiol (CBD), on the ventromedial hypothalamus (VMH) are not well understood. There is evidence that VMH neurons play a relevant role in the modulation of unconditioned fear-related defensive behavioural reactions displayed by laboratory animals. OBJECTIVES This study was designed to explore the specific pattern of distribution of the CB1 receptors in the VMH and to investigate the role played by this cannabinoid receptor in the effect of CBD on the control of defensive behaviours and unconditioned fear-induced antinociception. METHODS A panic attack-like state was triggered in Wistar rats by intra-VMH microinjections of N-methyl-D-aspartate (NMDA). One of three different doses of CBD was microinjected into the VMH prior to local administration of NMDA. In addition, the most effective dose of CBD was used after pre-treatment with the CB1 receptor selective antagonist AM251, followed by NMDA microinjections in the VMH. RESULTS The morphological procedures demonstrated distribution of labelled CB1 receptors on neuronal perikarya situated in dorsomedial, central and ventrolateral divisions of the VMH. The neuropharmacological approaches showed that both panic attack-like behaviours and unconditioned fear-induced antinociception decreased after intra-hypothalamic microinjections of CBD at the highest dose (100 nmol). These effects, however, were blocked by the administration of the CB1 receptor antagonist AM251 (100 pmol) in the VMH. CONCLUSION These findings suggest that CBD causes panicolytic-like effects and reduces unconditioned fear-induced antinociception when administered in the VMH, and these effects are mediated by the CB1 receptor-endocannabinoid signalling mechanism in VMH.
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Affiliation(s)
- Asmat Ullah Khan
- 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.,Department of Eastern Medicine and Surgery, School of Medical and Health Sciences, The University of Poonch Rawalakot, Hajira Road, Shamsabad, Rawalakot, Azad Jammu & Kashmir, 12350, Pakistan.,Neurobiology of Emotions (NAP-USP-NuPNE) Research Centre, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, 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, São Paulo, 14049-900, Brazil.,Neurobiology of Emotions (NAP-USP-NuPNE) Research Centre, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.,Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, São Paulo, 4220-030, Brazil
| | - Tayllon Dos Anjos-Garcia
- 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.,Neurobiology of Emotions (NAP-USP-NuPNE) Research Centre, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Maria de Fátima Dos Santos Sampaio
- 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
| | - José Alexandre de Souza Crippa
- Department of Neuroscience and Behavioural Sciences, Division of Psychiatry, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Leda Menescal-de-Oliveira
- Neurobiology of Emotions (NAP-USP-NuPNE) Research Centre, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.,Laboratory of Neurophysiology, Department of Physiology, Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, 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, São Paulo, 14049-900, Brazil. .,Neurobiology of Emotions (NAP-USP-NuPNE) Research Centre, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil. .,Behavioural Neurosciences Institute (INeC), Avenida do Café, 2450, Ribeirão Preto, São Paulo, 4220-030, Brazil.
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24
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dos Anjos-Garcia T, Coimbra NC. Anandamide in the anterior hypothalamus diminishes defensive responses elicited in mice threatened by Epicrates cenchria constrictor serpents. Acta Neurobiol Exp (Wars) 2020. [DOI: 10.21307/ane-2020-017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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de Carvalho MC, Figueiredo RMD, Coimbra NC, Leite-Panissi CRA, de Souza Silva MA, Huston JP, Mattern C, Brandão ML. Intranasal dopamine attenuates fear responses induced by electric shock to the foot and by electrical stimulation of the dorsal periaqueductal gray matter. J Psychopharmacol 2019; 33:1524-1532. [PMID: 31328620 DOI: 10.1177/0269881119862527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE Intranasally applied dopamine (IN-DA), which likely reaches the brain via nasal-brain pathways and bypasses the blood-brain barrier, has been found to increase extracellular DA and bind to the DA2 transporter in the striatum. Recent studies suggest that DA plays a significant role in the processing of signaled and unconditioned aversive stimulation, including evidence that may attenuate responses to painful input. The purpose of this study was to examine the effects of IN-DA on fear-related behaviors induced by electric shock to the foot or by electrical stimulation of the dorsal periaqueductal gray matter (dPAG). METHODS DA hydrochloride suspended in a viscous castor oil gel (1 or 2 mg/kg) was applied (IN-DA) in a volume of 5 μL into the nostrils of adult Wistar male rats in order to evaluate its effects on (a) freezing induced by electric shock to the foot and (b) thresholds of freezing and escape and duration of post-stimulation freezing induced by electrical stimulation of the dPAG. RESULTS IN-DA attenuated freezing induced by electric shock to the foot in the three test trials, indicating that it reduced long-term fear responses. IN-DA also increased the threshold of dPAG stimulation-induced escape responses and reduced post-stimulation freezing. CONCLUSIONS IN-DA, which has previously been shown to facilitate learning and to have antidepressive-like effects, attenuated unconditioned fear responses elicited by peripheral and intramesencephalic (dPAG) stimulation and reduced long-term conditioned fear responses.
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Affiliation(s)
- Milene Cristina de Carvalho
- Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, Brazil.,Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
| | - Rebeca Machado de Figueiredo
- Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, Brazil.,Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil
| | - Norberto Cysne Coimbra
- Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, Brazil.,Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
| | - Christie Ramos Andrade Leite-Panissi
- Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil.,Department of Psychology, Ribeirão Preto School of Philosophy, Science and Literature of the University of São Paulo, Ribeirão Preto, Brazil
| | - Maria Angélica de Souza Silva
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, University of Düsseldorf, Düsseldorf, Germany
| | - Joseph P Huston
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, University of Düsseldorf, Düsseldorf, Germany
| | - Claudia Mattern
- M et P Pharma AG, Emmetten, Switzerland.,Oceanographic Center, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Marcus Lira Brandão
- Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, Brazil.,NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto, Brazil
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Dos Anjos-Garcia T, Coimbra NC. Opposing roles of dorsomedial hypothalamic CB1 and TRPV1 receptors in anandamide signaling during the panic-like response elicited in mice by Brazilian rainbow Boidae snakes. Psychopharmacology (Berl) 2019; 236:1863-1874. [PMID: 30694375 DOI: 10.1007/s00213-019-5170-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/14/2019] [Indexed: 12/23/2022]
Abstract
RATIONALE The endocannabinoid system plays an important role in the organization of panic-like defensive behavior. Threatening situations stimulate brain areas, such as the dorsomedial hypothalamus (DMH). However, there is a lack of studies addressing the role of the DMH endocannabinoid system in panic-like responses. OBJECTIVES We aimed to verify which mechanisms underlie anandamide-mediated responses in the DMH. METHODS To test the hypothesis that the anandamide produces panicolytic-like effects, we treated mice with intra-DMH microinjections of vehicle or increasing doses of anandamide (0.5, 5, or 50 pmol) and then performed confrontation with the South American snake Epicrates cenchria assisi. RESULTS Intra-DMH anandamide treatment yielded a U-shaped dose-response curve with no effect of the lowest (0.5 pmol) or the highest (50 pmol) dose and significant inhibition of panic-like responses at the intermediate (5 pmol) dose. In addition, this panicolytic-like effect was prevented by pretreatment of the DMH with the CB1 receptor antagonist AM251 (100 pmol). However, pretreatment of the DMH with the TRPV1 receptor antagonist 6-iodo-nordihydrocapsaicin (3 nmol) restored the panicolytic-like effect of the highest dose of anandamide. Immunohistochemistry revealed that CB1 receptors were present primarily on axonal fibers, while TRPV1 receptors were found almost exclusively surrounding the perikarya in DMH. CONCLUSIONS The present results suggest that anandamide exerts a panicolytic-like effect in the DMH by activation of CB1 receptors and that TRPV1 receptors are related to the lack of effect of the highest dose of anandamide.
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Affiliation(s)
- Tayllon Dos Anjos-Garcia
- 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.,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, São Paulo, 14049-900, Brazil.,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, 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, São Paulo, 14049-900, 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, São Paulo, 14049-900, Brazil. .,Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil. .,Behavioural Neuroscience Institute (INeC), Av. do Café, 2450, Ribeirão Preto, São Paulo, 14050-220, Brazil.
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Calvo F, Almada RC, Dos Anjos-Garcia T, Falconi-Sobrinho LL, Paschoalin-Maurin T, Bazaglia-de-Sousa G, Medeiros P, Silva JAD, Lobão-Soares B, Coimbra NC. Panicolytic-like effect of µ 1-opioid receptor blockade in the inferior colliculus of prey threatened by Crotalus durissus terrificus pit vipers. J Psychopharmacol 2019; 33:577-588. [PMID: 30663473 DOI: 10.1177/0269881118822078] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND The endogenous opioid peptide system has been implicated in the neural modulation of fear and anxiety organised by the dorsal midbrain. Furthermore, previous results indicate a fundamental role played by inferior colliculus (IC) opioid mechanisms during the expression of defensive behaviours, but the involvement of the IC µ1-opioid receptor in the modulation of anxiety- and panic attack-related behaviours remains unclear. Using a prey-versus-snake confrontation paradigm, we sought to investigate the effects of µ1-opioid receptor blockade in the IC on the defensive behaviour displayed by rats in a dangerous situation. METHODS Specific pathogen-free Wistar rats were treated with microinjection of the selective µ1-opioid receptor antagonist naloxonazine into the IC at different concentrations (1.0, 3.0 and 5.0 µg/0.2 µL) and then confronted with rattlesnakes ( Crotalus durissus terrificus). The defensive behavioural repertoire, such as defensive attention, flat back approach (FBA), startle, defensive immobility, escape or active avoidance, displayed by rats either during the confrontations with wild snakes or during re-exposure to the experimental context without the predator was analysed. RESULTS The blockade of µ1-opioid receptors in the IC decreased the expression of both anxiety-related behaviours (defensive attention, FBA) and panic attack-related responses (startle, defensive immobility and escape) during the confrontation with rattlesnakes. A significant decrease in defensive attention was also recorded during re-exposure of the prey to the experimental apparatus context without the predator. CONCLUSION Taken together, these results suggest that a decrease in µ1-opioid receptor signalling activity within the IC modulates anxiety- and panic attack-related behaviours in dangerous environments.
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Affiliation(s)
- Fabrício Calvo
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,2 Department of Pharmacology, São Lucas College, Porto Velho (RO), Brazil.,3 Aparício Carvalho Integrative College (FIMCA), Porto Velho (RO), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil
| | - Rafael Carvalho Almada
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil
| | - Tayllon Dos Anjos-Garcia
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,6 NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Luiz Luciano Falconi-Sobrinho
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil.,6 NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Tatiana Paschoalin-Maurin
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil
| | - Guilherme Bazaglia-de-Sousa
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil.,6 NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Priscila Medeiros
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil
| | - Juliana Almeida da Silva
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil.,6 NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Bruno Lobão-Soares
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil.,7 Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte (UFRN), Natal (RN), Brazil
| | - Norberto Cysne Coimbra
- 1 Department of Pharmacology, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,4 Ophidiarium LNN-FMRP-USP/INeC, University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brasil.,5 Behavioural Neurosciences Institute (INeC), Ribeirão Preto (SP), Brazil.,6 NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
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da Silva Soares R, Falconi-Sobrinho LL, dos Anjos-Garcia T, Coimbra NC. 5-Hydroxytryptamine 2A receptors of the dorsal raphe nucleus modulate panic-like behaviours and mediate fear-induced antinociception elicited by neuronal activation in the central nucleus of the inferior colliculus. Behav Brain Res 2019; 357-358:71-81. [DOI: 10.1016/j.bbr.2017.07.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 06/14/2017] [Accepted: 07/15/2017] [Indexed: 12/26/2022]
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Calvo F, Lobão-Soares B, de Freitas RL, Paschoalin-Maurin T, Dos Anjos-Garcia T, Medeiros P, da Silva JA, Lovick TA, Coimbra NC. The endogenous opioid system modulates defensive behavior evoked by Crotalus durissus terrificus: Panicolytic-like effect of intracollicular non-selective opioid receptors blockade. J Psychopharmacol 2019; 33:51-61. [PMID: 30407114 DOI: 10.1177/0269881118806301] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND There is a controversy regarding the key role played by opioid peptide neurotransmission in the modulation of panic-attack-related responses. AIMS Using a prey versus rattlesnakes paradigm, the present work investigated the involvement of the endogenous opioid peptide-mediated system of the inferior colliculus in the modulation of panic attack-related responses. METHODS Wistar rats were pretreated with intracollicular administration of either physiological saline or naloxone at different concentrations and confronted with rattlesnakes ( Crotalus durissus terrificus). The prey versus rattlesnake confrontations were performed in a polygonal arena for snakes. The defensive behaviors displayed by prey (defensive attention, defensive immobility, escape response, flat back approach and startle) were recorded twice: firstly, over a period of 15 min the presence of the predator and a re-exposure was performed 24 h after the confrontation, when animals were exposed to the experimental enclosure without the rattlesnake. RESULTS The intramesencephalic non-specific blockade of opioid receptors with microinjections of naloxone at higher doses decreased both anxiety- (defensive attention and flat back approach) and panic attack-like (defensive immobility and escape) behaviors, evoked in the presence of rattlesnakes and increased non-defensive responses. During the exposure to the experimental context, there was a decrease in duration of defensive attention. CONCLUSIONS These findings suggest a panicolytic-like effect of endogenous opioid receptors antagonism in the inferior colliculus on innate (panic attack) and conditioned (anticipatory anxiety) fear in rats threatened by rattlesnakes.
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Affiliation(s)
- Fabrício Calvo
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,3 Department of Pharmacology, São Lucas College, Porto Velho (RO), Brazil.,4 Aparício Carvalho Integrative College, Porto Velho (RO), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Bruno Lobão-Soares
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,5 Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte (UFRN), Natal (RN), Brazil.,6 Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto (SP), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Renato Leonardo de Freitas
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,7 Laboratory of Neurobiology of Pain and Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto (SP), Brazil.,10 Biomedical Sciences Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas (MG), Brazil
| | - Tatiana Paschoalin-Maurin
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,6 Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto (SP), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Tayllon Dos Anjos-Garcia
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Priscila Medeiros
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Juliana Almeida da Silva
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
| | - Thelma Anderson Lovick
- 2 School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK.,6 Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto (SP), Brazil
| | - Norberto Cysne Coimbra
- 1 Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, School of Medicine of Ribeirão Preto of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,6 Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto (SP), Brazil.,7 Laboratory of Neurobiology of Pain and Emotions and Multi-User Centre of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto (SP), Brazil.,8 NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil.,9 Ophidiarium LNN-FMRP-USP/INeC, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Ribeirão Preto (SP), Brazil
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Blockade of synaptic activity in the neostriatum and activation of striatal efferent pathways produce opposite effects on panic attack-like defensive behaviours evoked by GABAergic disinhibition in the deep layers of the superior colliculus. Physiol Behav 2018; 196:104-111. [DOI: 10.1016/j.physbeh.2018.07.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 07/19/2018] [Accepted: 07/24/2018] [Indexed: 12/15/2022]
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Maeda K, Kunimatsu J, Hikosaka O. Amygdala activity for the modulation of goal-directed behavior in emotional contexts. PLoS Biol 2018; 16:e2005339. [PMID: 29870524 PMCID: PMC5988268 DOI: 10.1371/journal.pbio.2005339] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/02/2018] [Indexed: 11/30/2022] Open
Abstract
Choosing valuable objects and rewarding actions is critical for survival. While such choices must be made in a way that suits the animal’s circumstances, the neural mechanisms underlying such context-appropriate behavior are unclear. To address this question, we devised a context-dependent reward-seeking task for macaque monkeys. Each trial started with the appearance of one of many visual scenes containing two or more objects, and the monkey had to choose the good object by saccade to get a reward. These scenes were categorized into two dimensions of emotional context: dangerous versus safe and rich versus poor. We found that many amygdala neurons were more strongly activated by dangerous scenes, by rich scenes, or by both. Furthermore, saccades to target objects occurred more quickly in dangerous than in safe scenes and were also quicker in rich than in poor scenes. Thus, amygdala neuronal activity and saccadic reaction times were negatively correlated in each monkey. These results suggest that amygdala neurons facilitate targeting saccades predictably based on aspects of emotional context, as is necessary for goal-directed and social behavior. The amygdala is known to control passive fear responses (e.g., freezing), but it is unclear if it also contributes to active behaviors. To reach certain goals, we (humans and animals) often need to go through fearful environments. We hypothesized that the amygdala contributes to such an active behavior and devised a new foraging task for macaque monkeys in which various emotional contexts changed across many environments. This “exciting” task provoked extremely fast learning and high-capacity memory of objects and environments, and thereby caused extremely fast goal-directed behaviors. We found that the goal-directed behavior was affected by the emotional context in two dimensions (dangerous–safe and rich–poor) separately from the object values. Then, many neurons in the amygdala responded to the environments before any object appeared and did so selectively, depending on the emotional context of the environment. The neuronal activity was tightly correlated with the reaction time of goal-directed behavior across the contexts: faster behavior in dangerous or rich context. These results suggest that the amygdala facilitates goal-directed behavior by focusing on emotional contexts. Such a function is also important for emotional–social behavior and its disorder, including averted eye gaze in autism.
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Affiliation(s)
- Kazutaka Maeda
- Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
| | - Jun Kunimatsu
- Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Okihide Hikosaka
- Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States of America
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Falconi-Sobrinho LL, Coimbra NC. The Nitric Oxide Donor SIN-1-Produced Panic-Like Behaviour And Fear-Induced Antinociception Are Modulated By NMDA Receptors In The Anterior Hypothalamus. J Psychopharmacol 2018; 32:711-722. [PMID: 29737230 DOI: 10.1177/0269881118769061] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND An excitatory imbalance in the hypothalamus of rodents caused by local chemical stimulation elicits fear-related defensive reactions such as escape and freezing. In addition, these panic attack-like defensive reactions induced by hypothalamic neurons may cause antinociception. However, there is a shortage of studies showing the participation of the anterior hypothalamic nucleus in these adaptive defensive mechanisms. Nitric oxide (NO) donors have been shown to evoke fear-related defensive responses when microinjected into paralimbic and limbic structures, and this excitatory neuromodulation can recruit the glutamatergic system. AIMS The aim of this work was to investigate the influence of the glutamatergic system in the nitrergic effects on fear-related defensive responses organised by anterior hypothalamic neurons. METHODS The present study evaluates the effects of the molsidomine active metabolite SIN-1 NO donor administered into the anterior hypothalamus (AH) of mice at different concentrations (75, 150 and 300 nmol/0.1 μL). Then, we investigated the effects of pre-treatment of the AH with AP-7 (an N-methyl-d-aspartate (NMDA) receptor-selective antagonist; 0.02, 0.2 and 2 nmol/0.1 μL) on the behavioural and antinociceptive effects provoked by AH chemical stimulation with SIN-1 microinjections. RESULTS The 300 nmol dose of SIN-1 was the most effective at causing panic-like defensive behaviours followed by a significant antinociceptive response. In addition, both of these effects were attenuated or inhibited by AH pre-treatment with AP-7. CONCLUSIONS These findings suggest that the panicogenic and antinociceptive effects evoked by intra-AH microinjections of SIN-1 depend on NMDA receptor activation.
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Affiliation(s)
- Luiz Luciano Falconi-Sobrinho
- 1 Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Brazil.,2 NAP-USP-Neurobiology of Emotions Research Centre, Ribeirão Preto Medical School of the University of São Paulo, Brazil.,3 Behavioural Neurosciences Institute, Ribeirão Preto, SP, Brazil
| | - Norberto Cysne Coimbra
- 1 Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Brazil.,2 NAP-USP-Neurobiology of Emotions Research Centre, Ribeirão Preto Medical School of the University of São Paulo, Brazil.,3 Behavioural Neurosciences Institute, Ribeirão Preto, SP, Brazil
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Almada RC, Genewsky AJ, Heinz DE, Kaplick PM, Coimbra NC, Wotjak CT. Stimulation of the Nigrotectal Pathway at the Level of the Superior Colliculus Reduces Threat Recognition and Causes a Shift From Avoidance to Approach Behavior. Front Neural Circuits 2018; 12:36. [PMID: 29867370 PMCID: PMC5949341 DOI: 10.3389/fncir.2018.00036] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 04/17/2018] [Indexed: 01/14/2023] Open
Abstract
Defensive behavioral responses are essential for survival in threating situations. The superior colliculus (SC) has been implicated in the generation of defensive behaviors elicited by visual, tactile and auditory stimuli. Furthermore, substantia nigra pars reticulata (SNr) neurons are known to exert a modulatory effect on midbrain tectum neural substrates. However, the functional role of this nigrotectal pathway in threating situations is still poorly understood. Using optogenetics in freely behaving mice, we activated SNr projections at the level of the SC, and assessed consequences on behavioral performance in an open field test (OFT) and the beetle mania task (BMT). The latter confronts a mouse with an erratic moving robo-beetle and allows to measure active and passive defensive responses upon frequent encounter of the threatening object. Channelrhodopsin-2 (ChR2)-mediated activation of the inhibitory nigrotectal pathway did not affect anxiety-like and exploratory behavior in the OFT, but increased the number of contacts between robo-beetle and test mouse in the BMT. Depending on the size of the arena, active avoidance responses were reduced, whereas tolerance and close following of the robo-beetle were significantly increased. We conclude from the data that the nigrotectal pathway plays holds the potential to modulate innate fear by attenuating threat recognition and causing a shift from defensive to approach behavior.
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Affiliation(s)
- Rafael C Almada
- Department of Stress Neurobiology and Neurogenetics, Neuronal Plasticity, Max Planck Institute of Psychiatry, Munich, Germany.,Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School (FMRP), University of São Paulo (USP), São Paulo, Brazil.,Behavioral Neurosciences Institute (INeC), São Paulo, Brazil
| | - Andreas J Genewsky
- Department of Stress Neurobiology and Neurogenetics, Neuronal Plasticity, Max Planck Institute of Psychiatry, Munich, Germany
| | - Daniel E Heinz
- Department of Stress Neurobiology and Neurogenetics, Neuronal Plasticity, Max Planck Institute of Psychiatry, Munich, Germany.,Neuroscience Master's Program, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, Heidelberg, Germany
| | - Paul M Kaplick
- Department of Stress Neurobiology and Neurogenetics, Neuronal Plasticity, Max Planck Institute of Psychiatry, Munich, Germany
| | - Norberto C Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School (FMRP), University of São Paulo (USP), São Paulo, Brazil.,Behavioral Neurosciences Institute (INeC), São Paulo, Brazil.,NAP-USP-Neurobiology of Emotions Research Center (NuPNE), Ribeirão Preto Medical School (FMRP), University of São Paulo (USP), São Paulo, Brazil
| | - Carsten T Wotjak
- Department of Stress Neurobiology and Neurogenetics, Neuronal Plasticity, Max Planck Institute of Psychiatry, Munich, Germany
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Paschoalin-Maurin T, dos Anjos-Garcia T, Falconi-Sobrinho LL, de Freitas RL, Coimbra JPC, Laure CJ, Coimbra NC. The Rodent-versus-wild Snake Paradigm as a Model for Studying Anxiety- and Panic-like Behaviors: Face, Construct and Predictive Validities. Neuroscience 2018; 369:336-349. [DOI: 10.1016/j.neuroscience.2017.11.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 11/09/2017] [Accepted: 11/17/2017] [Indexed: 12/22/2022]
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Decrease in NMDA receptor-signalling activity in the anterior cingulate cortex diminishes defensive behaviour and unconditioned fear-induced antinociception elicited by GABAergic tonic inhibition impairment in the posterior hypothalamus. Eur Neuropsychopharmacol 2017; 27:1120-1131. [PMID: 28939165 DOI: 10.1016/j.euroneuro.2017.09.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 08/24/2017] [Accepted: 09/01/2017] [Indexed: 11/20/2022]
Abstract
Acute γ-aminobutyric acid (GABA) disinhibition in the posterior hypothalamus (PH) elicits defensive reactions that are considered anxiety- and panic attack-like behaviour, and these defensive reactions are followed by antinociception. Evidence indicates that the PH connects with the medial prefrontal cortex, particularly the anterior cingulate cortex (ACC), which seems to regulate these unconditioned fear-induced defensive responses. However, few studies have shown the participation of cortical regions in the control of behavioural and antinociceptive responses organised by diencephalic structures. It has been suggested that the glutamatergic system can mediate this cortical influence, as excitatory imbalance is believed to play a role in both defensive mechanisms. Thus, the aim of the present study was to investigate the involvement of ACC glutamatergic connections via blockade of local N-methyl-D-aspartate (NMDA) receptors to elaborate panic-like defensive behaviours and unconditioned fear-induced antinociception organised by PH neurons. Wistar rats were treated with microinjections of 0.9% NaCl or LY235959 (a selective NMDA receptor antagonist) in the ACC at different concentrations (2, 4 and 8 nmol/0.2μL), followed by GABAA receptor blockade in the PH. Defensive reactions were analysed for 20min, and the nociceptive threshold was then measured at 10-min intervals for 60min. Pretreatment of the ACC with LY235959 reduced both panic-like defensive behaviour and fear-induced antinociception evoked by PH GABAergic disinhibition. Our findings suggest that ACC NMDA receptor-signalled glutamatergic inputs play a relevant role in the organisation of anxiety- and panic attack-like behaviours and in fear-induced antinociception.
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da Silva JA, Biagioni AF, Almada RC, de Freitas RL, Coimbra NC. Panicolytic-like effects caused by substantia nigra pars reticulata pretreatment with low doses of endomorphin-1 and high doses of CTOP or the NOP receptors antagonist JTC-801 in male Rattus norvegicus. Psychopharmacology (Berl) 2017; 234:3009-3025. [PMID: 28856406 DOI: 10.1007/s00213-017-4678-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 06/20/2017] [Indexed: 12/22/2022]
Abstract
RATIONALE Gamma-aminobutyric acid (GABA)ergic neurons of the substantia nigra pars reticulata (SNpr) are connected to the deep layers of the superior colliculus (dlSC). The dlSC, in turn, connect with the SNpr through opioid projections. Nociceptin/orphanin FQ peptide (N/OFQ) is a natural ligand of a Gi protein-coupled nociceptin receptor (ORL1; NOP) that is also found in the SNpr. Our hypothesis is that tectonigral opioid pathways and intranigral orphanin-mediated mechanisms modulate GABAergic nigrotectal connections. OBJECTIVES Therefore, the aim of this work was to study the role of opioid and NOP receptors in the SNpr during the modulation of defence reactions organised by the dlSC. METHODS The SNpr was pretreated with either opioid or NOP receptor agonists and antagonists, followed by dlSC treatment with bicuculline. RESULTS Blockade of GABAA receptors in the dlSC elicited fear-related defensive behaviour. Pretreatment of the SNpr with naloxone benzoylhydrazone (NalBzoH), a μ-, δ-, and κ1-opioid receptor antagonist as well as a NOP receptor antagonist, decreased the aversive effect of bicuculline treatment on the dlSC. Either μ-opioid receptor activation or blockade by SNpr microinjection of endomorphin-1 (EM-1) and CTOP promoted pro-aversive and anti-aversive actions, respectively, that modulated the defensive responses elicited by bicuculline injection into the dlSC. Pretreatment of the SNpr with the selective NOP receptor antagonist JTC801 decreased the aversive effect of bicuculline, and microinjections of the selective NOP receptor agonist NNC 63-0532 promoted the opposite effect. CONCLUSIONS These results demonstrate that opioid pathways and orphanin-mediated mechanisms have a critical role in modulating the activity of nigrotectal GABAergic pathways during the organisation of defensive behaviours.
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Affiliation(s)
- Juliana Almeida da Silva
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto, São Paulo, 14050-220, Brazil
| | - Audrey Franceschi Biagioni
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Rafael Carvalho Almada
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto, São Paulo, 14050-220, Brazil
| | - Renato Leonardo de Freitas
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto, São Paulo, 14050-220, Brazil
- Multiuser Centre of Neuroelectrophysiology, Department of Anatomy and Surgery, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
- Laboratory of Pain and Emotions, Department of Anatomy and Surgery, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto, São Paulo, 14050-220, Brazil.
- NAP-USP-Neurobiology of Emotions Research Centre (NuPNE), Ribeirão Preto Medical School of the University of São Paulo, Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- Multiuser Centre of Neuroelectrophysiology, Department of Anatomy and Surgery, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
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Coimbra NC, Calvo F, Almada RC, Freitas RL, Paschoalin-Maurin T, dos Anjos-Garcia T, Elias-Filho DH, Ubiali WA, Lobão-Soares B, Tracey I. Opioid neurotransmission modulates defensive behavior and fear-induced antinociception in dangerous environments. Neuroscience 2017; 354:178-195. [DOI: 10.1016/j.neuroscience.2017.04.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 10/19/2022]
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Coimbra NC, Paschoalin-Maurin T, Bassi GS, Kanashiro A, Biagioni AF, Felippotti TT, Elias-Filho DH, Mendes-Gomes J, Cysne-Coimbra JP, Almada RC, Lobão-Soares B. Critical neuropsychobiological analysis of panic attack- and anticipatory anxiety-like behaviors in rodents confronted with snakes in polygonal arenas and complex labyrinths: a comparison to the elevated plus- and T-maze behavioral tests. ACTA ACUST UNITED AC 2017; 39:72-83. [PMID: 28177062 PMCID: PMC7112733 DOI: 10.1590/1516-4446-2015-1895] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Accepted: 04/04/2016] [Indexed: 01/02/2023]
Abstract
Objective: To compare prey and snake paradigms performed in complex environments to the elevated plus-maze (EPM) and T-maze (ETM) tests for the study of panic attack- and anticipatory anxiety-like behaviors in rodents. Methods: PubMed was reviewed in search of articles focusing on the plus maze test, EPM, and ETM, as well as on defensive behaviors displayed by threatened rodents. In addition, the authors' research with polygonal arenas and complex labyrinth (designed by the first author for confrontation between snakes and small rodents) was examined. Results: The EPM and ETM tests evoke anxiety/fear-related defensive responses that are pharmacologically validated, whereas the confrontation between rodents and snakes in polygonal arenas with or without shelters or in the complex labyrinth offers ethological conditions for studying more complex defensive behaviors and the effects of anxiolytic and panicolytic drugs. Prey vs. predator paradigms also allow discrimination between non-oriented and oriented escape behavior. Conclusions: Both EPM and ETM simple labyrinths are excellent apparatuses for the study of anxiety- and instinctive fear-related responses, respectively. The confrontation between rodents and snakes in polygonal arenas, however, offers a more ethological environment for addressing both unconditioned and conditioned fear-induced behaviors and the effects of anxiolytic and panicolytic drugs.
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Affiliation(s)
- Norberto C Coimbra
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções (NAP-USP-NuPNE), FMRP, USP, Ribeirão Preto, SP, Brazil
| | - Tatiana Paschoalin-Maurin
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções (NAP-USP-NuPNE), FMRP, USP, Ribeirão Preto, SP, Brazil
| | - Gabriel S Bassi
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Alexandre Kanashiro
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Audrey F Biagioni
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções (NAP-USP-NuPNE), FMRP, USP, Ribeirão Preto, SP, Brazil
| | - Tatiana T Felippotti
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, SP, Brazil
| | - Daoud H Elias-Filho
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, SP, Brazil
| | - Joyce Mendes-Gomes
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções (NAP-USP-NuPNE), FMRP, USP, Ribeirão Preto, SP, Brazil
| | - Jade P Cysne-Coimbra
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Rafael C Almada
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Instituto de Neurociências e Comportamento (INeC), Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções (NAP-USP-NuPNE), FMRP, USP, Ribeirão Preto, SP, Brazil
| | - Bruno Lobão-Soares
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.,Departamento de Biofísica e Farmacologia, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil
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Ullah F, dos Anjos-Garcia T, Mendes-Gomes J, Elias-Filho DH, Falconi-Sobrinho LL, Freitas RLD, Khan AU, Oliveira RD, Coimbra NC. Connexions between the dorsomedial division of the ventromedial hypothalamus and the dorsal periaqueductal grey matter are critical in the elaboration of hypothalamically mediated panic-like behaviour. Behav Brain Res 2017; 319:135-147. [DOI: 10.1016/j.bbr.2016.11.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 11/08/2016] [Accepted: 11/13/2016] [Indexed: 01/20/2023]
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CB1 cannabinoid receptor-mediated anandamide signalling reduces the defensive behaviour evoked through GABAA receptor blockade in the dorsomedial division of the ventromedial hypothalamus. Neuropharmacology 2017; 113:156-166. [DOI: 10.1016/j.neuropharm.2016.04.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 03/22/2016] [Accepted: 04/04/2016] [Indexed: 01/01/2023]
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Unravelling cortico-hypothalamic pathways regulating unconditioned fear-induced antinociception and defensive behaviours. Neuropharmacology 2016; 113:367-385. [PMID: 27717879 DOI: 10.1016/j.neuropharm.2016.10.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 09/26/2016] [Accepted: 10/01/2016] [Indexed: 12/30/2022]
Abstract
The medial prefrontal cortex can influence unconditioned fear-induced defensive mechanisms organised by diencephalic neurons that are under tonic GABAergic inhibition. The posterior hypothalamus (PH) is involved with anxiety- and panic attack-like responses. To understand this cortical mediation, our study characterised anterior cingulate cortex (ACC)-PH pathways and investigated the effect of ACC local inactivation with lidocaine. We also investigated the involvement of PH ionotropic glutamate receptors in the defensive behaviours and fear-induced antinociception by microinjecting NBQX (an AMPA/kainate receptor antagonist) and LY235959 (a NMDA receptor antagonist) into the PH. ACC pretreatment with lidocaine decreased the proaversive effect and antinociception evoked by GABAA receptor blockade in the PH, which suggests that there may be descending excitatory pathways from this cortical region to the PH. Microinjections of both NBQX and LY235959 into the PH also attenuated defensive and antinociceptive responses. This suggests that the blockade of AMPA/kainate and NMDA receptors reduces the activity of glutamatergic efferent pathways. Both inputs from the ACC to the PH and glutamatergic hypothalamic short links disinhibited by intra-hypothalamic GABAA receptors blockade are potentially implicated. Microinjection of a bidirectional neurotracer in the PH showed a Cg1-PH pathway and PH neuronal reciprocal connections with the periaqueductal grey matter. Microinjections of an antegrade neurotracer into the Cg1 showed axonal fibres and glutamatergic vesicle-immunoreactive terminal boutons surrounding both mediorostral-lateroposterior thalamic nucleus and PH neuronal perikarya. These data suggest a critical role played by ACC-PH glutamatergic pathways and AMPA/kainate and NMDA receptors in the panic attack-like reactions and antinociception organised by PH neurons.
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5-Hydroxytryptamine 2A/2C receptors of nucleus raphe magnus and gigantocellularis/paragigantocellularis pars α reticular nuclei modulate the unconditioned fear-induced antinociception evoked by electrical stimulation of deep layers of the superior colliculus and dorsal periaqueductal grey matter. Behav Brain Res 2016; 316:294-304. [PMID: 27616344 DOI: 10.1016/j.bbr.2016.09.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 08/29/2016] [Accepted: 09/06/2016] [Indexed: 11/21/2022]
Abstract
The electrical stimulation of the dorsolateral columns of the periaquedutal grey matter (dlPAG) or deep layers of the superior colliculus (dlSC) evokes defensive behaviours followed by an antinociceptive response. Monoaminergic brainstem reticular nuclei are suggested to comprise the endogenous pain modulatory system. The aim of the present work was to investigate the role played by 5-HT2 subfamily of serotonergic receptors of the nucleus raphe magnus (NRM) and the gigantocellularis/paragigantocellularis pars α reticular nuclei (Gi/PGiα) in the elaboration of instinctive fear-induced antinociception elicited by electrical stimulation of dlPAG or of dlSC. The nociceptive thresholds were measured by the tail-flick test in Wistar rats. The 5-HT2A/2C-serotonergic receptors antagonist ritanserin was microinjected at different concentrations (0.05, 0.5 and 5.0μg/0.2μL) either in Gi/PGiα or in NRM. The blockade of 5-HT2 receptors in both Gi/PGiα and NRM decreased the innate fear-induced antinociception elicited by electrical stimulation of the dlSC or the dlPAG. These findings indicate that serotonin is involved in the hypo-algesia induced by unconditioned fear-induced behavioural responses and the 5-HT2A/2C-serotonergic receptor subfamily in neurons situated in the Gi/PGiα complex and NRM are critically recruited in pain modulation during the panic-like emotional behaviour.
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Biagioni AF, Anjos-Garcia TD, Ullah F, Fisher IR, Falconi-Sobrinho LL, Freitas RLD, Felippotti TT, Coimbra NC. Neuroethological validation of an experimental apparatus to evaluate oriented and non-oriented escape behaviours: Comparison between the polygonal arena with a burrow and the circular enclosure of an open-field test. Behav Brain Res 2016; 298:65-77. [DOI: 10.1016/j.bbr.2015.10.059] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 10/27/2015] [Accepted: 10/31/2015] [Indexed: 12/26/2022]
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Cagan A, Blass T. Identification of genomic variants putatively targeted by selection during dog domestication. BMC Evol Biol 2016; 16:10. [PMID: 26754411 PMCID: PMC4710014 DOI: 10.1186/s12862-015-0579-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/22/2015] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Dogs [Canis lupus familiaris] were the first animal species to be domesticated and continue to occupy an important place in human societies. Recent studies have begun to reveal when and where dog domestication occurred. While much progress has been made in identifying the genetic basis of phenotypic differences between dog breeds we still know relatively little about the genetic changes underlying the phenotypes that differentiate all dogs from their wild progenitors, wolves [Canis lupus]. In particular, dogs generally show reduced aggression and fear towards humans compared to wolves. Therefore, selection for tameness was likely a necessary prerequisite for dog domestication. With the increasing availability of whole-genome sequence data it is possible to try and directly identify the genetic variants contributing to the phenotypic differences between dogs and wolves. RESULTS We analyse the largest available database of genome-wide polymorphism data in a global sample of dogs 69 and wolves 7. We perform a scan to identify regions of the genome that are highly differentiated between dogs and wolves. We identify putatively functional genomic variants that are segregating or at high frequency [> = 0.75 Fst] for alternative alleles between dogs and wolves. A biological pathways analysis of the genes containing these variants suggests that there has been selection on the 'adrenaline and noradrenaline biosynthesis pathway', well known for its involvement in the fight-or-flight response. We identify 11 genes with putatively functional variants fixed for alternative alleles between dogs and wolves. The segregating variants in these genes are strong candidates for having been targets of selection during early dog domestication. CONCLUSIONS We present the first genome-wide analysis of the different categories of putatively functional variants that are fixed or segregating at high frequency between a global sampling of dogs and wolves. We find evidence that selection has been strongest around non-synonymous variants. Strong selection in the initial stages of dog domestication appears to have occurred on multiple genes involved in the fight-or-flight response, particularly in the catecholamine synthesis pathway. Different alleles in some of these genes have been associated with behavioral differences between modern dog breeds, suggesting an important role for this pathway at multiple stages in the domestication process.
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Affiliation(s)
- Alex Cagan
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany.
| | - Torsten Blass
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany.
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Roncon CM, Almada RC, Maraschin JC, Audi EA, Zangrossi H, Graeff FG, Coimbra NC. Pharmacological evidence for the mediation of the panicolytic effect of fluoxetine by dorsal periaqueductal gray matter μ-opioid receptors. Neuropharmacology 2015; 99:620-6. [DOI: 10.1016/j.neuropharm.2015.08.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/20/2015] [Accepted: 08/21/2015] [Indexed: 10/23/2022]
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Endocannabinoid signaling mechanisms in the substantia nigra pars reticulata modulate GABAergic nigrotectal pathways in mice threatened by urutu-cruzeiro venomous pit viper. Neuroscience 2015; 303:503-14. [DOI: 10.1016/j.neuroscience.2015.06.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/02/2015] [Accepted: 06/23/2015] [Indexed: 01/06/2023]
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47
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da Silva JA, Biagioni AF, Almada RC, de Souza Crippa JA, Cecílio Hallak JE, Zuardi AW, Coimbra NC. Dissociation between the panicolytic effect of cannabidiol microinjected into the substantia nigra, pars reticulata, and fear-induced antinociception elicited by bicuculline administration in deep layers of the superior colliculus: The role of CB1-cannabinoid receptor in the ventral mesencephalon. Eur J Pharmacol 2015; 758:153-63. [PMID: 25841876 DOI: 10.1016/j.ejphar.2015.03.051] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 03/11/2015] [Accepted: 03/17/2015] [Indexed: 01/17/2023]
Abstract
Many studies suggest that the substantia nigra, pars reticulata (SNpr), a tegmental mesencephalic structure rich in γ-aminobutyric acid (GABA)- and cannabinoid receptor-containing neurons, is involved in the complex control of defensive responses through the neostriatum-nigral disinhibitory and nigro-tectal inhibitory GABAergic pathways during imminently dangerous situations. The aim of the present work was to investigate the role played by CB1-cannabinoid receptor of GABAergic pathways terminal boutons in the SNpr or of SNpr-endocannabinoid receptor-containing interneurons on the effect of intra-nigral microinjections of cannabidiol in the activity of nigro-tectal inhibitory pathways. GABAA receptor blockade in the deep layers of the superior colliculus (dlSC) elicited vigorous defensive behaviour. This explosive escape behaviour was followed by significant antinociception. Cannabidiol microinjection into the SNpr had a clear anti-aversive effect, decreasing the duration of defensive alertness, the frequency and duration of defensive immobility, and the frequency and duration of explosive escape behaviour, expressed by running and jumps, elicited by transitory GABAergic dysfunction in dlSC. However, the innate fear induced-antinociception was not significantly changed. The blockade of CB1 endocannabinoid receptor in the SNpr decreased the anti-aversive effect of canabidiol based on the frequency and duration of defensive immobility, the frequency of escape expressed by running, and both the frequency and duration of escape expressed by jumps. These findings suggest a CB1 mediated endocannabinoid signalling in cannabidiol modulation of panic-like defensive behaviour, but not of innate fear-induced antinociception evoked by GABAA receptor blockade with bicuculline microinjection into the superior colliculus, with a putative activity in nigro-collicular GABAergic pathways.
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Affiliation(s)
- Juliana Almeida da Silva
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto 14050-220, São Paulo, Brazil
| | - Audrey Francisco Biagioni
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Rafael Carvalho Almada
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto 14050-220, São Paulo, Brazil
| | - José Alexandre de Souza Crippa
- Department of Neurosciences and Behavioural Sciences, Division of Psychiatry, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. dos Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Jaime Eduardo Cecílio Hallak
- Department of Neurosciences and Behavioural Sciences, Division of Psychiatry, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. dos Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Antônio Waldo Zuardi
- Department of Neurosciences and Behavioural Sciences, Division of Psychiatry, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. dos Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Monte Alegre, Ribeirão Preto 14050-220, São Paulo, Brazil; Neurobiology of Emotions Research Centre (NAP-USP-NuPNE), Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. dos Bandeirantes, 3900, Ribeirão Preto, São Paulo 14049-900, São Paulo, Brazil.
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