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Inan S, Meissler JJ, Shekarabi A, Foss J, Wiah S, Eisenstein TK, Rawls SM. Cyanidin prevents MDPV withdrawal-induced anxiety-like effects and dysregulation of cytokine systems in rats. Brain Res 2023; 1806:148310. [PMID: 36871847 PMCID: PMC10190163 DOI: 10.1016/j.brainres.2023.148310] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
Psychostimulant exposure and withdrawal cause neuroimmune dysregulation and anxiety that contributes to dependence and relapse. Here, we tested the hypothesis that withdrawal from the synthetic cathinone MDPV (methylenedioxypyrovalerone) produces anxiety-like effects and enhanced levels of mesocorticolimbic cytokines that are inhibited by cyanidin, an anti-inflammatory flavonoid and nonselective blocker of IL-17A signaling. For comparison, we tested effects on glutamate transporter systems that are also dysregulated during psychostimulant free period. Rats injected for 9 d with MDPV (1 mg/kg, IP) or saline were pretreated daily with cyanidin (0.5 mg/kg, IP) or saline, followed by behavioral testing on the elevated zero maze (EZM) 72 h after the last MDPV injection. MDPV withdrawal caused a reduction in time spent on the open arm of the EZM that was prevented by cyanidin. Cyanidin itself did not affect locomotor activity or time spent on the open arm, or cause aversive or rewarding effects in place preference experiments. MDPV withdrawal caused enhancement of cytokine levels (IL-17A, IL-1β, IL-6, TNF=α, IL-10, and CCL2) in the ventral tegmental area, but not amygdala, nucleus accumbens, or prefrontal cortex, that was prevented by cyanidin. During MDPV withdrawal, mRNA levels of glutamate aspartate transporter (GLAST) and glutamate transporter subtype 1 (GLT-1) in the amygdala were also elevated but normalized by cyanidin treatment. These results show that MDPV withdrawal induced anxiety, and brain-region specific dysregulation of cytokine and glutamate systems, that are both prevented by cyanidin, thus identifying cyanidin for further investigation in the context of psychostimulant dependence and relapse.
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Affiliation(s)
- Saadet Inan
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA.
| | - Joseph J Meissler
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Aryan Shekarabi
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Jeffrey Foss
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Sonita Wiah
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Toby K Eisenstein
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Scott M Rawls
- Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
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de Farias Araujo G, Medeiros RJ, Maciel-Magalhães M, Correia FV, Saggioro EM. Zebrafish (Danio rerio) as a model to assess the effects of cocaine as a drug of abuse and its environmental implications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:28459-28479. [PMID: 36689115 DOI: 10.1007/s11356-023-25402-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 01/14/2023] [Indexed: 06/17/2023]
Abstract
Cocaine (COC) use concerns are on the increase for both authorities and civil society. Despite this, it is important to investigate COC effects or those of its main metabolite, belzoylecgonine (BE), in consolidated aquatic model organisms, such as the zebrafish (Danio rerio). This (mini) review consists in an assessment regarding toxicological studies carried out employing zebrafish (embryos, larvae or adults) exposed to COC and/or BE indexed at the SCOPUS and Web of Science databases. Ten different endpoints were analyzed in both embryos and larvae, whereas only four were analyzed in adults. Of the 23 studies, only five investigated COC and/or BE effects following an environmental approach when exposing zebrafish, while most (18 studies) analyzed COC effects under a drug of abuse approach. Cocaine exposure was noted as altering the expression of several genes, such as those linked to COC transport proteins, dopamine receptors, SP substance production, the tachykinin system, and the tyrosine hydroxylase enzyme. BE exposure resulted in more oxidative and proteomic effects than COC in embryos. Cocaine abstinence resulted in hyperactivity associated with stereotypy in adult fish, in addition to reduced responses to visual stimuli to red light and neuronal development pattern alterations. Cocaine was noted as accumulating in zebrafish eyes, possibly due to melanin binding, and causing dose-response cardiac effects in both embryos and adults. Despite the different effects addressed by our survey, we emphasize the lack of COC and BE exposure assessments in zebrafish employing an environmental point of view.
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Affiliation(s)
- Gabriel de Farias Araujo
- Programa de Pós-Graduação Em Saúde Pública E Meio Ambiente, Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, Brasil
| | - Renata Jurema Medeiros
- Instituto Nacional de Controle de Qualidade Em Saúde, Fundação Oswaldo Cruz, Av. Brasil, 4365, Manguinhos, 21040-900, Rio de Janeiro, Brasil
| | - Magno Maciel-Magalhães
- Instituto Nacional de Controle de Qualidade Em Saúde, Fundação Oswaldo Cruz, Av. Brasil, 4365, Manguinhos, 21040-900, Rio de Janeiro, Brasil
| | - Fábio Veríssimo Correia
- Programa de Pós-Graduação Em Saúde Pública E Meio Ambiente, Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, Brasil
- Departamento de Ciências Naturais, Universidade Federal Do Estado Do Rio de Janeiro, Av. Pasteur, 458, Urca, 22290-250, Rio de Janeiro, Brasil
| | - Enrico Mendes Saggioro
- Programa de Pós-Graduação Em Saúde Pública E Meio Ambiente, Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, Brasil.
- Laboratório de Avaliação E Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, 21040-360, Brazil.
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Extracellular zinc regulates contextual fear memory formation in male rats through MMP-BDNF-TrkB pathway in dorsal hippocampus and basolateral amygdala. Behav Brain Res 2023; 439:114230. [PMID: 36442645 DOI: 10.1016/j.bbr.2022.114230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 11/26/2022]
Abstract
Large amount of zinc (100 µM even up to 300 µM) is released from the nerve terminals in response to high frequency neuronal stimulation in certain brain regions including hippocampus and amygdala. However, its precise pharmacological effect is poorly understood. Here, we investigated the role of extracellular zinc (endogenous zinc) and exogenous zinc in memory formation using contextual fear conditioning (CFC) model. Male Sprague Dawley rats were trained for fear conditioning followed by in vivo microdialysis for collection of microdialysate samples from CA1 and CA3 regions of hippocampus and basolateral amygdala (BLA). Extracellular zinc chelator CaEDTA, BDNF scavenger TrkB-Fc, exogenous 7,8-DHF and matrix metalloproteinases (MMP) inhibitor were infused into the CA1 and CA3 regions of hippocampus and BLA after CFC. Different doses of exogenous zinc hydroaspartate were administered intraperitoneally immediately after CFC. We found that CFC increased the level of extracellular zinc in the hippocampus and BLA. Infusing the CaEDTA, TrkB-Fc and MMP inhibitor into the CA1 and CA3 regions of hippocampus and BLA disrupted the fear memory formation. Furthermore, administration of TrKB agonist 7,8-DHF reversed the inhibitory effect of CaEDTA on fear memory formation, suggesting that extracellular zinc may regulate fear memory formation via the BDNF-TrKB pathway. We also found that high dose of exogenous zinc hydroaspartate supplementation increased extracellular zinc levels in brain and enhanced fear memory formation. Altogether, these findings indicate that extracellular zinc may participate in formation of contextual fear memory through MMP-BDNF-TrkB pathway in the hippocampus and BLA.
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Migliaro M, Sánchez-Zavaleta R, Soto-Tinoco E, Ruiz-Contreras AE, Méndez-Díaz M, Herrera-Solís A, Pérez de la Mora M, Prospéro-García OE. Dominance status is associated with a variation in cannabinoid receptor 1 expression and amphetamine reward. Pharmacol Biochem Behav 2022; 221:173483. [PMID: 36270348 DOI: 10.1016/j.pbb.2022.173483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/11/2022] [Accepted: 10/11/2022] [Indexed: 12/14/2022]
Abstract
The rewarding effects of psychostimulants appear to be distinct between dominant and subordinate individuals. In turn, the endocannabinoid system is an important modulator of drug reward in the nucleus accumbens and medial prefrontal cortex, however the connection with social dominance is yet to be established. Male rats were classified as dominant or subordinate on the basis of their spontaneous agonistic interactions and drug reward was assessed by means of conditioned place preference with amphetamine (AMPH). In addition, the expression of CB1R, CB2R, FAAH1, and DAGLa was quantified from accumbal and cortical tissue samples. Our findings demonstrate that dominant rats required a lesser dose of AMPH to acquire a preference for the drug-associated compartment, thereby suggesting a higher sensitivity to the rewarding effects of AMPH. Furthermore, dominants exhibited a lower expression of CB1R in the medial prefrontal cortex and nucleus accumbens. This study illustrates how CBR1 expression could differentiate the behavioral phenotypes associated to social dominance.
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Affiliation(s)
- Martin Migliaro
- Laboratorio de Cannabinoides, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Rodolfo Sánchez-Zavaleta
- Laboratorio de Cannabinoides, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Eva Soto-Tinoco
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Alejandra E Ruiz-Contreras
- Laboratorio de Neurogenómica Cognitiva, Coordinación de Psicobiología y Neurociencias, Facultad de Psicología, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Mónica Méndez-Díaz
- Laboratorio de Cannabinoides, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Andrea Herrera-Solís
- Laboratorio de Efectos Terapéuticos de los Cannabinoides, Subdirección de Investigación Biomédica, Hospital General Dr. Manuel Gea González, Ciudad de México, Mexico
| | - Miguel Pérez de la Mora
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Oscar E Prospéro-García
- Laboratorio de Cannabinoides, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.
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Foster SL, Lustberg DJ, Harbin NH, Bramlett SN, Hepler JR, Weinshenker D. RGS14 modulates locomotor behavior and ERK signaling induced by environmental novelty and cocaine within discrete limbic structures. Psychopharmacology (Berl) 2021; 238:2755-2773. [PMID: 34184126 PMCID: PMC8455459 DOI: 10.1007/s00213-021-05892-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/01/2021] [Indexed: 12/14/2022]
Abstract
RATIONALE In rodents, exposure to novel environments or psychostimulants promotes locomotion. Indeed, locomotor reactivity to novelty strongly predicts behavioral responses to psychostimulants in animal models of addiction. RGS14 is a plasticity-restricting protein with unique functional domains that enable it to suppress ERK-dependent signaling as well as regulate G protein activity. Although recent studies show that RGS14 is expressed in multiple limbic regions implicated in psychostimulant- and novelty-induced hyperlocomotion, its function has been examined mostly in the context of hippocampal physiology and memory. OBJECTIVE We investigated whether RGS14 modulates novelty- and cocaine-induced locomotion (NIL and CIL, respectively) and neuronal activity. METHODS We assessed Rgs14 knockout (RGS14 KO) mice and wild-type (WT) littermate controls using NIL and CIL behavioral tests, followed by quantification of c-fos and phosphorylated ERK (pERK) induction in limbic regions that normally express RGS14. RESULTS RGS14 KO mice were less active than WT controls in the NIL test, driven by avoidance of the center of the novel environment. By contrast, RGS14 KO mice demonstrated augmented peripheral locomotion in the CIL test conducted in either a familiar or novel environment. RGS14 KO mice exhibited increased thigmotaxis, as well as greater c-fos and pERK induction in the central amygdala and dorsal hippocampus, when cocaine and novelty were paired. CONCLUSIONS RGS14 KO mice exhibited anti-correlated locomotor responses to novelty and cocaine, but displayed increased thigmotaxis in response to either stimuli which was augmented by their combination. Our findings also suggest RGS14 may reduce neuronal activity in limbic subregions by inhibiting ERK-dependent signaling.
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Affiliation(s)
- Stephanie L. Foster
- Emory University School of Medicine, Department of Human Genetics, Atlanta, GA 30322
| | - Daniel J. Lustberg
- Emory University School of Medicine, Department of Human Genetics, Atlanta, GA 30322
| | - Nicholas H. Harbin
- Emory University School of Medicine, Department of Pharmacology and Chemical Biology, Atlanta, GA 30322
| | - Sara N. Bramlett
- Emory University School of Medicine, Department of Pharmacology and Chemical Biology, Atlanta, GA 30322
| | - John R. Hepler
- Emory University School of Medicine, Department of Pharmacology and Chemical Biology, Atlanta, GA 30322,Correspondence to: David Weinshenker, Ph.D., Department of Human Genetics, Emory University School of Medicine, 615 Michael St., Whitehead 301, Atlanta, GA 30322, ; John R. Hepler, Ph.D., Department of Pharmacology and Chemical Biology, Emory University School of Medicine, 1510 Clifton Rd., Atlanta, GA 30322,
| | - David Weinshenker
- , Department of Human Genetics, Emory University School of Medicine, 615 Michael St., Whitehead 301, Atlanta, GA, 30322, USA.
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Dos Anjos Rosário B, de Fátima Santana de Nazaré M, Lemes JA, de Andrade JS, da Silva RB, Pereira CDS, Ribeiro DA, de Barros Viana M. Repeated crack cocaine administration alters panic-related responses and delta FosB immunoreactivity in panic-modulating brain regions. Exp Brain Res 2021; 239:1179-1191. [PMID: 33569614 DOI: 10.1007/s00221-020-06031-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 12/30/2020] [Indexed: 01/09/2023]
Abstract
Crack cocaine is the crystal form of cocaine, produced by adding sodium bicarbonate to cocaine base paste. Brazil is the largest consumer of crack cocaine in the world. Users of crack cocaine show important physiological and behavioral alterations, including neuropsychiatric symptoms, such as anxiety-related symptoms. Nevertheless, few pre-clinical studies have been previously performed to understand the neurobiological effects of crack cocaine. The purpose of the present study was to investigate effects of the subchronic treatment (5 days, IP) of rats with crack cocaine in an animal model of anxiety/panic, the elevated T-maze (ETM). The ETM model allows the measurement of two behavioral defensive responses, avoidance and escape, in clinical terms, respectively, associated to generalized anxiety and panic disorder, the two main psychiatric conditions that accompany substance use disorders. Immediately after the ETM model, animals were tested in an open field for locomotor activity assessment. Analysis of delta FosB protein immunoreactivity was used to map areas activated by crack cocaine exposure. Results showed that crack treatment selectively altered escape displayed by rats in the ETM test, inducing either a panicolytic (18 mg/kg IP) or a panicogenic-like effect (25 and 36 mg/kg IP). These effects were followed by the altered functioning of panic-modulating brain regions, i.e., the periaqueductal gray and the dorsal region and lateral wings of the dorsal raphe nucleus. Treatment with 36 mg/kg of crack cocaine also increased locomotor activity. These are the first observations performed with crack cocaine in a rodent model of anxiety/panic and contribute to a better understanding of the behavioral and neurobiological effects of crack cocaine.
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Affiliation(s)
| | | | - Jéssica Alves Lemes
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, SP, Brazil
| | - José Simões de Andrade
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, SP, Brazil
| | - Regina Barbosa da Silva
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, SP, Brazil
| | | | - Daniel Araki Ribeiro
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, SP, Brazil
| | - Milena de Barros Viana
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, SP, Brazil.
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Epigenetic mechanisms associated with addiction-related behavioural effects of nicotine and/or cocaine: implication of the endocannabinoid system. Behav Pharmacol 2018; 28:493-511. [PMID: 28704272 DOI: 10.1097/fbp.0000000000000326] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The addictive use of nicotine (NC) and cocaine (COC) continues to be a major public health problem, and their combined use has been reported, particularly during adolescence. In neural plasticity, commonly induced by NC and COC, as well as behavioural plasticity related to the use of these two drugs, the involvement of epigenetic mechanisms, in which the reversible regulation of gene expression occurs independently of the DNA sequence, has recently been reported. Furthermore, on the basis of intense interactions with the target neurotransmitter systems, the endocannabinoid (ECB) system has been considered pivotal for eliciting the effects of NC or COC. The combined use of marijuana with NC and/or COC has also been reported. This article presents the addiction-related behavioural effects of NC and/or COC, based on the common behavioural/neural plasticity and combined use of NC/COC, and reviews the interacting role of the ECB system. The epigenetic processes inseparable from the effects of NC and/or COC (i.e. DNA methylation, histone modifications and alterations in microRNAs) and the putative therapeutic involvement of the ECB system at the epigenetic level are also discussed.
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Parolini M, Bini L, Magni S, Rizzo A, Ghilardi A, Landi C, Armini A, Del Giacco L, Binelli A. Exposure to cocaine and its main metabolites altered the protein profile of zebrafish embryos. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 232:603-614. [PMID: 28993024 DOI: 10.1016/j.envpol.2017.09.097] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/13/2017] [Accepted: 09/28/2017] [Indexed: 06/07/2023]
Abstract
Illicit drugs have been identified as emerging aquatic pollutants because of their widespread presence in freshwaters and potential toxicity towards aquatic organisms. Among illicit drug residues, cocaine (COC) and its main metabolites, namely benzoylecgonine (BE) and ecgonine methyl ester (EME), are commonly detected in freshwaters worldwide at concentration that can induce diverse adverse effects to non-target organisms. However, the information of toxicity and mechanisms of action (MoA) of these drugs, mainly of COC metabolites, to aquatic species is still fragmentary and inadequate. Thus, this study was aimed at investigating the toxicity of two concentrations (0.3 and 1.0 μg/L) of COC, BE and EME similar to those found in aquatic ecosystems on zebrafish (Danio rerio) embryos at 96 h post fertilization through a functional proteomics approach. Exposure to COC and both its metabolites significantly altered the protein profile of zebrafish embryos, modulating the expression of diverse proteins belonging to different functional classes, including cytoskeleton, eye constituents, lipid transport, lipid and energy metabolism, and stress response. Expression of vitellogenins and crystallins was modulated by COC and both its main metabolites, while only BE and EME altered proteins related to lipid and energy metabolism, as well as to oxidative stress response. Our data confirmed the potential toxicity of low concentrations of COC, BE and EME, and helped to shed light on their MoA on an aquatic vertebrate during early developmental period.
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Affiliation(s)
- Marco Parolini
- Department of Environmental Science and Policy, University of Milan, via Celoria 2, I-20133 Milano, Italy.
| | - Luca Bini
- Department of Life Sciences, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Stefano Magni
- Department of Biosciences, University of Milan, via Celoria 26, I-20133 Milan, Italy
| | - Alessandro Rizzo
- Department of Environmental Science and Policy, University of Milan, via Celoria 2, I-20133 Milano, Italy
| | - Anna Ghilardi
- Department of Biosciences, University of Milan, via Celoria 26, I-20133 Milan, Italy
| | - Claudia Landi
- Department of Life Sciences, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Alessandro Armini
- Department of Life Sciences, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Luca Del Giacco
- Department of Biosciences, University of Milan, via Celoria 26, I-20133 Milan, Italy
| | - Andrea Binelli
- Department of Biosciences, University of Milan, via Celoria 26, I-20133 Milan, Italy
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Wang J, Fang Q, Yang C. Effects of paternal deprivation on cocaine-induced behavioral response and hypothalamic oxytocin immunoreactivity and serum oxytocin level in female mandarin voles. Behav Brain Res 2017; 334:135-141. [PMID: 28756211 DOI: 10.1016/j.bbr.2017.07.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 07/24/2017] [Accepted: 07/25/2017] [Indexed: 10/19/2022]
Abstract
Early paternal behavior plays a critical role in behavioral development in monogamous species. The vast majority of laboratory studies investigating the influence of parental behavior on cocaine vulnerability focus on the effects of early maternal separation. However, comparable studies on whether early paternal deprivation influences cocaine-induced behavioral response are substantially lacking. Mandarin vole (Microtus mandarinus) is a monogamous rodent with high levels of paternal care. After mandarin vole pups were subjected to early paternal deprivation, acute cocaine- induced locomotion, anxiety- like behavior and social behavior were examined in 45day old female pups, while hypothalamic oxytocin immunoreactivity and serum oxytocin level were also assessed. We found that cocaine increased locomotion and decreased social investigation, contact behavior and serum oxytocin level regardless of paternal care. Cocaine increased anxiety levels and decreased oxytocin immunoreactive neurons of the paraventricular nuclei and supraoptic nuclei in the bi-parental care group, whilst there were no specific effects in the paternal deprivation group. These results indicate that paternal deprivation results in different behavioral response to acute cocaine exposure in adolescents, which may be in part associated with the alterations in oxytocin immunoreactivity and peripheral OT level.
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Affiliation(s)
- Jianli Wang
- College of Biological Sciences and Engineering, Beifang University of Nationalities, Yinchuan, Ningxia 750021, China.
| | - Qianqian Fang
- College of Biological Sciences and Engineering, Beifang University of Nationalities, Yinchuan, Ningxia 750021, China; College of Life Sciences, Shaanxi Normal University, Xian, Shaanxi 710062, China
| | - Chenxi Yang
- College of Biological Sciences and Engineering, Beifang University of Nationalities, Yinchuan, Ningxia 750021, China
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Attenuation of the anxiogenic effects of cocaine by 5-HT 1B autoreceptor stimulation in the bed nucleus of the stria terminalis of rats. Psychopharmacology (Berl) 2017; 234:485-495. [PMID: 27888284 PMCID: PMC5226880 DOI: 10.1007/s00213-016-4479-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 11/02/2016] [Indexed: 10/20/2022]
Abstract
RATIONALE Cocaine produces significant aversive/anxiogenic actions whose underlying neurobiology remains unclear. A possible substrate contributing to these actions is the serotonergic (5-HT) pathway projecting from the dorsal raphé (DRN) to regions of the extended amygdala, including the bed nucleus of the stria terminalis (BNST) which have been implicated in the production of anxiogenic states. OBJECTIVES The present study examined the contribution of 5-HT signaling within the BNST to the anxiogenic effects of cocaine as measured in a runway model of drug self-administration. METHODS Male Sprague-Dawley rats were fitted with bilateral infusion cannula aimed at the BNST and then trained to traverse a straight alley once a day for a single 1 mg/kg i.v. cocaine infusion delivered upon goal-box entry on each of 16 consecutive days/trials. Intracranial infusions of CP 94,253 (0, 0.25, 0.5, or 1.0 μg/side) were administered to inhibit local 5-HT release via activation of 5-HT1B autoreceptors. To confirm receptor specificity, the effects of this treatment were then challenged by co-administration of the selective 5-HT1B antagonist NAS-181. RESULTS Intra-BNST infusions of the 5-HT1B autoreceptor agonist attenuated the anxiogenic effects of cocaine as reflected by a decrease in runway approach-avoidance conflict behavior. This effect was reversed by the 5-HT1B antagonist. Neither start latencies (a measure of the subject's motivation to seek cocaine) nor spontaneous locomotor activity (an index of motoric capacity) were altered by either treatment. CONCLUSIONS Inhibition of 5-HT1B signaling within the BNST selectively attenuated the anxiogenic effects of cocaine, while leaving unaffected the positive incentive properties of the drug.
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Contarino A, Kitchener P, Vallée M, Papaleo F, Piazza PV. CRF 1 receptor-deficiency increases cocaine reward. Neuropharmacology 2017; 117:41-48. [PMID: 28137450 DOI: 10.1016/j.neuropharm.2017.01.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 01/04/2017] [Accepted: 01/24/2017] [Indexed: 11/19/2022]
Abstract
Stimulant drugs produce reward but also activate stress-responsive systems. The corticotropin-releasing factor (CRF) and the related hypothalamus-pituitary-adrenal (HPA) axis stress-responsive systems are activated by stimulant drugs. However, their role in stimulant drug-induced reward remains poorly understood. Herein, we report that CRF1 receptor-deficient (CRF1-/-), but not wild-type, mice show conditioned place preference (CPP) responses to a relatively low cocaine dose (5 mg/kg, i.p.). Conversely, wild-type, but not CRF1-/-, mice display CPP responses to a relatively high cocaine dose (20 mg/kg, i.p.), indicating that CRF1 receptor-deficiency alters the rewarding effects of cocaine. Acute pharmacological antagonism of the CRF1 receptor by antalarmin also eliminates cocaine reward. Nevertheless, CRF1-/- mice display higher stereotypy responses to cocaine than wild-type mice. Despite the very low plasma corticosterone concentration, CRF1-/- mice show higher nuclear glucocorticoid receptor (GR) levels in the brain region of the hippocampus than wild-type mice. Full rescue of wild-type-like corticosterone and GR circadian rhythm and level in CRF1-/- mice by exogenous corticosterone does not affect CRF1 receptor-dependent cocaine reward but induces stereotypy responses to cocaine. These results indicate a critical role for the CRF1 receptor in cocaine reward, independently of the closely related HPA axis activity.
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Affiliation(s)
- Angelo Contarino
- CNRS, INCIA, UMR 5287, 33000 Bordeaux, France; Univ. Bordeaux, 33000 Bordeaux, France.
| | - Pierre Kitchener
- INSERM U1215, NeuroCentre Magendie, 33077 Bordeaux, France; Univ. Bordeaux, 33000 Bordeaux, France
| | - Monique Vallée
- INSERM U1215, NeuroCentre Magendie, 33077 Bordeaux, France; Univ. Bordeaux, 33000 Bordeaux, France
| | - Francesco Papaleo
- Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, via Morego, 30, 16163 Genova, Italy
| | - Pier-Vincenzo Piazza
- INSERM U1215, NeuroCentre Magendie, 33077 Bordeaux, France; Univ. Bordeaux, 33000 Bordeaux, France
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12
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Gomez A, Petrucci AN, Dance L, Morales-Valenzuela J, Gibbs N, Dahlhausen CC, Villatoro JR, Frohardt RF, Guarraci FA. An acute, non-therapeutic dose of methylphenidate disrupts partner preference in female rats. Pharmacol Biochem Behav 2016; 150-151:100-107. [DOI: 10.1016/j.pbb.2016.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/19/2016] [Accepted: 09/21/2016] [Indexed: 11/25/2022]
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Sathler MF, Stutz B, Martins RS, Dos Santos Pereira M, Pecinalli NR, Santos LE, Taveira-da-Silva R, Lowe J, de Freitas IG, de Melo Reis RA, Manhães AC, Kubrusly RCC. Single exposure to cocaine impairs aspartate uptake in the pre-frontal cortex via dopamine D1-receptor dependent mechanisms. Neuroscience 2016; 329:326-36. [PMID: 27208619 DOI: 10.1016/j.neuroscience.2016.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 11/16/2022]
Abstract
Dopamine and glutamate play critical roles in the reinforcing effects of cocaine. We demonstrated that a single intraperitoneal administration of cocaine induces a significant decrease in [(3)H]-d-aspartate uptake in the pre-frontal cortex (PFC). This decrease is associated with elevated dopamine levels, and requires dopamine D1-receptor signaling (D1R) and adenylyl cyclase activation. The effect was observed within 10min of cocaine administration and lasted for up to 30min. This rapid response is related to D1R-mediated cAMP-mediated activation of PKA and phosphorylation of the excitatory amino acid transporters EAAT1, EAAT2 and EAAT3. We also demonstrated that cocaine exposure increases extracellular d-aspartate, l-glutamate and d-serine in the PFC. Our data suggest that cocaine activates dopamine D1 receptor signaling and PKA pathway to regulate EAATs function and extracellular EAA level in the PFC.
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Affiliation(s)
- Matheus Figueiredo Sathler
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Bernardo Stutz
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Robertta Silva Martins
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Maurício Dos Santos Pereira
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil; Laboratório de Neurofisiologia Molecular, Departamento de Fisiologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
| | - Ney Roner Pecinalli
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Luis E Santos
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Rosilane Taveira-da-Silva
- Laboratório de Fisico-Química Biológica Aída Hassón-Voloch Instituto de Biofísica Carlos Chagas Filho Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Jennifer Lowe
- Laboratório de Fisico-Química Biológica Aída Hassón-Voloch Instituto de Biofísica Carlos Chagas Filho Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Isis Grigorio de Freitas
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Ricardo Augusto de Melo Reis
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Alex C Manhães
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Centro Biomédico, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Regina C C Kubrusly
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
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14
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Shelton K, Bogyo K, Schick T, Ettenberg A. Pharmacological modulation of lateral habenular dopamine D2 receptors alters the anxiogenic response to cocaine in a runway model of drug self-administration. Behav Brain Res 2016; 310:42-50. [PMID: 27155504 DOI: 10.1016/j.bbr.2016.05.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 04/01/2016] [Accepted: 05/02/2016] [Indexed: 12/21/2022]
Abstract
Cocaine has long been known to produce an initial "high" followed by an aversive/anxiogenic "crash". While much is known about the neurobiology of cocaine's positive/rewarding effects, the mechanisms that give rise to the drug's negative/anxiogenic actions remain unclear. Recent research has implicated the lateral habenula (LHb) in the encoding of aversive events including the anxiogenic response to cocaine. Of particular interest in this regard are the reciprocal connections between the LHb and the ventral tegmental area (VTA). VTA-DA neurons innervate different subsets of LHb cells that in turn feedback upon and modulate VTA neuronal activity. Here we examined the impact of D2 receptor activation and inhibition on the anxiogenic response to cocaine using a runway model of self-administration that is sensitive to the dual and opposing effects of the drug. Male rats ran a straight alley for IV cocaine (1.0mg/kg) following bilateral intra-LHb infusions of the D2 receptor antagonist, cis-flupenthixol (0, 7.5 or 15μg/side) or the D2 agonist, sumanirole (0, 5 or 10μg/side). Vehicle-pretreated controls developed approach-avoidance conflict behaviors about goal-box entry reflective of the dual positive and negative effects of cocaine. These behaviors were significantly diminished during LHb-D2 receptor antagonism and increased by the LHb D2 receptor agonist. These results demonstrate that activity at the D2 receptor in the lateral habenula serves to modulate the anxiogenic response to cocaine.
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Affiliation(s)
- Kerisa Shelton
- Behavioral Pharmacology Laboratory, Department of Psychological and Brain Sciences, University of California, Santa Barbara, California 93106-9660, United States
| | - Kelsie Bogyo
- Behavioral Pharmacology Laboratory, Department of Psychological and Brain Sciences, University of California, Santa Barbara, California 93106-9660, United States
| | - Tinisha Schick
- Behavioral Pharmacology Laboratory, Department of Psychological and Brain Sciences, University of California, Santa Barbara, California 93106-9660, United States
| | - Aaron Ettenberg
- Behavioral Pharmacology Laboratory, Department of Psychological and Brain Sciences, University of California, Santa Barbara, California 93106-9660, United States.
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15
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Robertson JM, Prince MA, Achua JK, Carpenter RE, Arendt DH, Smith JP, Summers TL, Summers TR, Summers CH. Nuance and behavioral cogency: How the Visible Burrow System inspired the Stress-Alternatives Model and conceptualization of the continuum of anxiety. Physiol Behav 2016; 146:86-97. [PMID: 26066728 DOI: 10.1016/j.physbeh.2015.03.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 12/20/2022]
Abstract
By creating the Visible Burrow System (VBS) Bob Blanchard found a way to study the interaction of genetics, physiology, environment, and adaptive significance in a model with broad validity. The VBS changed the way we think about anxiety and affective disorders by allowing the mechanisms which control them to be observed in a dynamic setting. Critically, Blanchard used the VBS and other models to show how behavioral systems like defense are dependent upon context and behavioral elements unique to the individual. Inspired by the VBS, we developed a Stress Alternatives Model (SAM) to further explore the multifaceted dynamics of the stress response with a dichotomous choice condition. Like the VBS, the SAM is a naturalistic model built upon risk assessment and defensive behavior, but with a choice of response: escape or submission to a large conspecific aggressor. The anxiety of novelty during the first escape must be weighed against fear of the aggressor, and a decision must be made. Both outcomes are adaptively significant, evidenced by a 50/50 split in outcome across several study systems. By manipulating the variables of the SAM, we show that a gradient of anxiety exists that spans the contextual settings of escaping an open field, escaping from aggression, and submitting to aggression. These findings correspond with increasing levels of corticosterone and increasing levels of NPS and BDNF in the central amygdala as the context changes.Whereas some anxiolytics were able to reduce the latency to escape for some animals, only with the potent anxiolytic drug antalarmin (CRF1R-blocker) and the anxiogenic drug yohimbine (α2 antagonist) were we able to reverse the outcome for a substantial proportion of individuals. Our findings promote a novel method for modeling anxiety, offering a distinction between low-and-high levels, and accounting for individual variability. The translational value of the VBS is immeasurable, and it guided us and many other researchers to seek potential clinical solutions through a deeper understanding of regional neurochemistry and gene expression in concert with an ecological behavioral model.
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17
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Pometlová M, Nohejlová-Deykun K, Šlamberová R. Anxiogenic Effect of Low-dose Methamphetamine in the Test of Elevated Plus-maze. Prague Med Rep 2015; 113:223-30. [DOI: 10.14712/23362936.2015.20] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Methamphetamines (MA) are psychostimulant drugs that are known to change individuals’ behavior. Psychostimulants could either evoke positive emotions (e.g. joy and happiness) or attenuate negative emotional states (e.g. anxiety and depression) in humans. In animal experiments, the test of elevated plus-maze (EPM) is widely used. This test is appropriate for evaluation of anxiolytic and anxiogenic drug effects, or for examination of specific subtypes of anxiety disorders. The aim of the present study was to examine the effect of acute single dose of MA (1 mg/kg) on the behavior of laboratory rat in the EPM. The detailed ethologic analysis of behavior was performed using a modified protocol based on the study of Fernández Espejo (1997). Our results demonstrated that MA affects rat’s behavior in the EPM in the majority of analyzed categories. The present protocol allowed us to determine positive anxiogenic effect of MA.
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Crunelle CL, Kaag AM, van den Munkhof HE, Reneman L, Homberg JR, Sabbe B, van den Brink W, van Wingen G. Dysfunctional amygdala activation and connectivity with the prefrontal cortex in current cocaine users. Hum Brain Mapp 2015. [PMID: 26220024 DOI: 10.1002/hbm.22913] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES Stimulant use is associated with increased anxiety and a single administration of dexamphetamine increases amygdala activation to biologically salient stimuli in healthy individuals. Here, we investigate how current cocaine use affects amygdala activity and amygdala connectivity with the prefrontal cortex in response to biologically salient stimuli in an emotional face matching task (EFMT). EXPERIMENTAL DESIGN Amygdala activity and amygdala connectivity during the EFMT were assessed in 51 cocaine using males and 32 non-drug-using healthy males using functional magnetic resonance imaging (fMRI). Within the cocaine use group, we explored whether amygdala activation was associated with age of first use of cocaine and duration of cocaine use to distinguish between amygdala activation alterations as a cause or a consequence of cocaine use. PRINCIPAL OBSERVATIONS We observed hyperactivity of the amygdala, thalamus, and hippocampus and reduced amygdala connectivity with the anterior cingulate gyrus in response to angry and fearful facial expressions in current cocaine users compared to controls. Increased amygdala activation was independently associated with earlier age of first cocaine use and with longer exposure to cocaine. CONCLUSIONS Our findings suggest that amygdala hyperactivity to biologically salient stimuli may represent a risk factor for an early onset of cocaine use and that prolonged cocaine use may further sensitize amygdala activation. High amygdala activation to emotional face processing in current cocaine users may result from low prefrontal control of the amygdala response to such stimuli.
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Affiliation(s)
- Cleo L Crunelle
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Toxicological Center, University of Antwerp, Antwerp, Belgium
| | - Anne Marije Kaag
- Department of Radiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Hanna E van den Munkhof
- Department of Neurochemistry and Neuropharmacology, Institute of Biomedical Sciences of Barcelona, Barcelona, Spain
| | - Liesbeth Reneman
- Department of Radiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Judith R Homberg
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition, and Behaviour, Centre for Neuroscience Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Bernard Sabbe
- Collaborative Antwerp Psychiatric Research Institute, University of Antwerp, Antwerp, Belgium
| | - Wim van den Brink
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Guido van Wingen
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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CRF1 receptor-deficiency induces anxiety-like vulnerability to cocaine. Psychopharmacology (Berl) 2014; 231:3965-72. [PMID: 24687410 DOI: 10.1007/s00213-014-3534-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 03/03/2014] [Indexed: 01/23/2023]
Abstract
RATIONALE The intake of psychostimulant drugs may induce cognitive dysfunction and negative affective-like states, and is associated with increased activity of stress-responsive systems. The corticotropin-releasing factor (CRF) system mediates neuroendocrine, behavioural and autonomic responses to stressors, and might be implicated in substance-related disorders. CRF signalling is mediated by two receptor types, named CRF1 and CRF2. OBJECTIVES The present study aims to elucidate the role for the CRF1 receptor in cognitive dysfunction and anxiety-like states induced by cocaine. RESULTS The genetic inactivation of the CRF1 receptor (CRF1+/- and CRF1-/-) does not influence recognition memory in drug-naïve mice, as assessed by the novel object recognition (NOR) test. Moreover, the chronic administration of escalating doses of cocaine (5-20 mg/kg, i.p.) induces NOR deficits, which are unaffected by CRF1 receptor-deficiency. However, the same drug regimen reveals an anxiety-like vulnerability to cocaine in CRF1-/- but not in wild-type or CRF1+/- mice, as assessed by the elevated plus maze test. CONCLUSIONS The present findings indicate dissociation of cognitive dysfunction and anxiety-like states induced by cocaine. Moreover, they unravel a novel mechanism of vulnerability to psychostimulant drugs.
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20
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Anxiolytic effects of oxytocin in cue-induced cocaine seeking behavior in rats. Psychopharmacology (Berl) 2014; 231:4145-55. [PMID: 24760374 DOI: 10.1007/s00213-014-3553-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Accepted: 03/20/2014] [Indexed: 11/27/2022]
Abstract
RATIONALE Oxytocin (OT) is a neuropeptide previously related to reward, learning, memory, and stress, events associated with cocaine addiction. OT has shown anxiolytic properties in different animal models of anxiety. Moreover, previous data have demonstrated an increase in mRNA OT levels within the nucleus accumbens (NAc) following acute and chronic cocaine exposure in rats. Therefore, OT might play a modulatory role in the rewarding properties of cocaine. OBJECTIVES The present set of experiments aims to examine the role of OT on environmentally elicited cocaine-seeking behavior and whether OT could reduce anxiety associated with this behavior. METHODS Separate groups of rats were trained in a cue-elicited cocaine-seeking behavior paradigm. Prior to the reinstatement phase, animals received microinfusions of artificial cerebrospinal fluid (aCSF), OT, OT agonist (TgOT), or OT antagonist (OTA) within the intracerebral ventricular intracerebroventricular (ICV) system. To test OT anxiolytic effects in reinstatement behavior, separate groups of animals were trained in a cue-elicited cocaine-seeking behavior protocol or in a cocaine-conditioning paradigm. At the end of each behavioral training, all animals were ICV pretreated with aCSF or OT, and then exposed to an elevated plus maze. RESULTS Results showed that OT and TgOT pretreatment significantly reduced reinstatement of cocaine-seeking behavior. Most significantly, OT treatment reduced the anxiety triggered by cue-induced reinstatement conditions and cocaine-paired conditioned locomotion. CONCLUSIONS The present study demonstrates for the first time that OT actions within the brain mediate the anxiety response triggered by cues previously paired with cocaine intake.
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Lifelong, central corticotropin-releasing factor (CRF) overexpression is associated with individual differences in cocaine-induced conditioned place preference. Eur J Pharmacol 2014; 753:151-7. [PMID: 25094033 DOI: 10.1016/j.ejphar.2014.07.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 07/24/2014] [Indexed: 11/20/2022]
Abstract
Stress, through corticotropin-releasing factor (CRF), influences all aspects of cocaine addiction. Earlier studies suggest that individual differences in responsivity to stress affect susceptibility to develop addiction. We have previously found that CRF over-expression alters individual differences in behavioural responses to novelty stress in mice. Therefore, we hypothesised that post-natal, long-term over-expression of brain CRF may alter the rewarding effects of cocaine in a manner that is sensitive to individual differences. In this study we specifically investigated cocaine-induced conditioned place preference (CPP) in transgenic mice over-expressing CRF (CRF-OE) and in wild-type (WT) littermates after determining their individual locomotor and emotional responsivity to inescapable novelty. CRF-OE mice showed decreased overall locomotor activity and increased anxiety-like behaviour in response to novelty compared to WT mice. Low behavioural reactivity to novelty (LR) was associated with heightened anxiety-like behaviour in CRF-OE, but not in WT, mice. WT and CRF-OE mice developed CPP equally to both low (5mg/kg) and high (20mg/kg) doses of cocaine. However, LR CRF-OE mice expressed significantly stronger cocaine CPP than transgenic mice with high locomotor response to novelty (HR). In WT mice, on the other hand, stronger CPP induced by 20mg/kg of cocaine was found in the HR animals. Furthermore, there was a strong negative correlation between locomotor reactivity to novelty and CPP in CRF-OE, but not in WT, mice. Collectively, these results suggest that long-term, post-natal CRF over-expression increases the rewarding effects of cocaine in individuals with high emotional response to stress.
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22
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Rygula R, Szczech E, Papciak J, Nikiforuk A, Popik P. The effects of cocaine and mazindol on the cognitive judgement bias of rats in the ambiguous-cue interpretation paradigm. Behav Brain Res 2014; 270:206-12. [DOI: 10.1016/j.bbr.2014.05.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/06/2014] [Accepted: 05/09/2014] [Indexed: 11/15/2022]
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Noradrenergic β-receptor antagonism within the central nucleus of the amygdala or bed nucleus of the stria terminalis attenuates the negative/anxiogenic effects of cocaine. J Neurosci 2014; 34:3467-74. [PMID: 24599448 DOI: 10.1523/jneurosci.3861-13.2014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cocaine has been shown to produce both initial rewarding and delayed anxiogenic effects. Although the neurobiology of cocaine's rewarding effects has been well studied, the mechanisms underlying its anxiogenic effects remain unclear. We used two behavioral assays to study these opposing actions of cocaine: a runway self-administration test and a modified place conditioning test. In the runway, the positive and negative effects of cocaine are reflected in the frequency of approach-avoidance conflict that animals develop about entering a goal box associated with cocaine delivery. In the place conditioning test, animals develop preferences for environments paired with the immediate/rewarding effects of cocaine, but avoid environments paired with the drug's delayed/anxiogenic actions. In the present study, these two behavioral assays were used to examine the role of norepinephrine (NE) transmission within the central nucleus of the amygdala (CeA) and the bed nucleus of the stria terminalis (BNST), each of which has been implicated in drug-withdrawal-induced anxiety and stress-induced response reinstatement. Rats experienced 15 single daily cocaine-reinforced (1.0 mg/kg, i.v.) runway trials 10 min after intracranial injection of the β1 and β2 NE receptor antagonists betaxolol and ICI 118551 or vehicle into the CeA or BNST. NE antagonism of either region dose dependently reduced approach-avoidance conflict behavior compared with that observed in vehicle-treated controls. In addition, NE antagonism selectively interfered with the expression of conditioned place aversions while leaving intact cocaine-induced place preferences. These data suggest a role for NE signaling within the BNST and the CeA in the anxiogenic actions of cocaine.
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24
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Paris JJ, Carey AN, Shay CF, Gomes SM, He JJ, McLaughlin JP. Effects of conditional central expression of HIV-1 tat protein to potentiate cocaine-mediated psychostimulation and reward among male mice. Neuropsychopharmacology 2014; 39:380-8. [PMID: 23945478 PMCID: PMC3870789 DOI: 10.1038/npp.2013.201] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 07/12/2013] [Accepted: 08/12/2013] [Indexed: 02/06/2023]
Abstract
As a major neuropathogenic factor associated with human immunodeficiency virus (HIV) infection, HIV-1 Tat protein is known to synergize with psychostimulant drugs of abuse to cause neurotoxicity and exacerbate the progression of central nervous system pathology. However, the functional consequences of the interaction between HIV-1 Tat and abused drugs on behavior are little known. We tested the hypothesis that HIV-1 Tat expression in brain would modulate the psychostimulant effects of cocaine. Using the GT-tg bigenic mouse model, where brain-selective Tat expression is induced by activation of a doxycycline (Dox) promotor, we tested the effects of Tat on cocaine (10 mg/kg, s.c.) induced locomotion and conditioned place preference (CPP). Compared with uninduced littermates or C57BL/6J controls, cocaine-induced hyperlocomotion was sustained for a significantly longer duration among Tat-induced mice. Moreover, although all groups displayed similar saline-CPP, Tat-induced GT-tg mice demonstrated a three-fold increase in cocaine-CPP over the response of either uninduced littermates or Dox-treated C57BL/6J control mice. Induction of Tat also increased the magnitude of a previously established cocaine-CPP after an additional cycle of cocaine place-conditioning. Despite Tat-induced potentiation, extinction of place preference occurred within 21 days, commensurate with cocaine-extinction among saline-treated littermates and C57BL/6J controls. Re-exposure to cocaine produced reinstatement of an equivalent place preference in Tat-induced GT-tg or C57BL/6J mice; however, induction of Tat protein after the extinction of CPP also produced reinstatement without additional exposure to cocaine. Together, these data suggest that central HIV-1 Tat expression can potentiate the psychostimulant behavioral effects of cocaine in mice.
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Affiliation(s)
- Jason J Paris
- Department of Pharmacology and Neuroscience, Torrey Pines Institute for Molecular Studies, Port Saint Lucie, FL, USA
| | - Amanda N Carey
- Department of Psychology, Northeastern University, Boston, MA, USA,Department of Psychology, Simmons College, Boston, MA, USA
| | | | - Stacey M Gomes
- Department of Pharmacology and Neuroscience, Torrey Pines Institute for Molecular Studies, Port Saint Lucie, FL, USA,Department of Psychology, Northeastern University, Boston, MA, USA
| | - Johnny J He
- Department of Cell Biology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Jay P McLaughlin
- Department of Pharmacology and Neuroscience, Torrey Pines Institute for Molecular Studies, Port Saint Lucie, FL, USA,Department of Psychology, Northeastern University, Boston, MA, USA,Department of Biology, Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port Saint Lucie, FL 34987, USA, Tel: +772 345 4715, Fax: +772 345 3649, E-mail:
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25
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Morrison TR, Melloni RH. The role of serotonin, vasopressin, and serotonin/vasopressin interactions in aggressive behavior. Curr Top Behav Neurosci 2014; 17:189-228. [PMID: 24496652 DOI: 10.1007/7854_2014_283] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Aggression control has been investigated across species and is centrally mediated within various brain regions by several neural systems that interact at different levels. The debate over the degree to which any one system or region affects aggressive responding, or any behavior for that matter, in some senses is arbitrary considering the plastic and adaptive properties of the central nervous system. Nevertheless, from the reductionist point of view, the compartmentalization of evolutionarily maladaptive behaviors to specific regions and systems of the brain is necessary for the advancement of clinical treatments (e.g., pharmaceutical) and novel therapeutic methods (e.g., deep brain stimulation). The general purpose of this chapter is to examine the confluence of two such systems, and how their functional interaction affects aggressive behavior. Specifically, the influence of the serotonin (5HT) and arginine vasopressin (AVP) neural systems on the control of aggressive behavior will be examined individually and together to provide a context by which the understanding of aggression modulation can be expanded from seemingly parallel neuromodulatory mechanisms, to a single and highly interactive system of aggression control.
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Affiliation(s)
- Thomas R Morrison
- Program in Behavioral Neuroscience, Department of Psychology, Northeastern University, 125 Nightingale Hall, 360 Huntington Ave, Boston, MA, 02155, USA,
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Tipps ME, Raybuck JD, Lattal KM. Substance abuse, memory, and post-traumatic stress disorder. Neurobiol Learn Mem 2013; 112:87-100. [PMID: 24345414 DOI: 10.1016/j.nlm.2013.12.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 11/23/2013] [Accepted: 12/03/2013] [Indexed: 12/20/2022]
Abstract
A large body of literature demonstrates the effects of abused substances on memory. These effects differ depending on the drug, the pattern of delivery (acute or chronic), and the drug state at the time of learning or assessment. Substance use disorders involving these drugs are often comorbid with anxiety disorders, such as post-traumatic stress disorder (PTSD). When the cognitive effects of these drugs are considered in the context of the treatment of these disorders, it becomes clear that these drugs may play a deleterious role in the development, maintenance, and treatment of PTSD. In this review, we examine the literature evaluating the cognitive effects of three commonly abused drugs: nicotine, cocaine, and alcohol. These three drugs operate through both common and distinct neurobiological mechanisms and alter learning and memory in multiple ways. We consider how the cognitive and affective effects of these drugs interact with the acquisition, consolidation, and extinction of learned fear, and we discuss the potential impediments that substance abuse creates for the treatment of PTSD.
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Affiliation(s)
- Megan E Tipps
- Department of Behavioral Neuroscience, Oregon Health & Science University, United States.
| | - Jonathan D Raybuck
- Department of Behavioral Neuroscience, Oregon Health & Science University, United States.
| | - K Matthew Lattal
- Department of Behavioral Neuroscience, Oregon Health & Science University, United States.
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27
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Rodriguez-Arias M, Navarrete F, Daza-Losada M, Navarro D, Aguilar MA, Berbel P, Miñarro J, Manzanares J. CB1 cannabinoid receptor-mediated aggressive behavior. Neuropharmacology 2013; 75:172-80. [DOI: 10.1016/j.neuropharm.2013.07.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/01/2013] [Accepted: 07/11/2013] [Indexed: 10/26/2022]
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Ahrens AM, Nobile CW, Page LE, Maier EY, Duvauchelle CL, Schallert T. Individual differences in the conditioned and unconditioned rat 50-kHz ultrasonic vocalizations elicited by repeated amphetamine exposure. Psychopharmacology (Berl) 2013; 229:687-700. [PMID: 23700082 PMCID: PMC3935796 DOI: 10.1007/s00213-013-3130-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Accepted: 04/22/2013] [Indexed: 01/26/2023]
Abstract
RATIONALE Adult rats often produce 50-kHz ultrasonic vocalizations (USVs), particularly the frequency-modulated varieties, in appetitive situations. These calls are thought by some to reflect positive affective states and the reinforcing value of drugs such as amphetamine and cocaine. OBJECTIVE The objective of this study was to determine whether the number of unconditioned 50-kHz USVs elicited by amphetamine predicts the development and/or magnitude of drug-conditioned motivation. METHODS In three experiments, we recorded USVs before and after injections of 1 mg/kg amphetamine (i.v. or i.p.) administered once per session. Rats were categorized as "high callers" or "low callers" according to individual differences in the number of 50-kHz USVs elicited by their first amphetamine injection. We examined the conditioned appetitive behavior and conditioned place preference (CPP) that emerged in high and low callers after repeated pairings of amphetamine with specific contexts. We also examined whether amphetamine-induced calling was affected by treatment within an unfamiliar (test chamber) versus familiar (home cage) context. RESULTS Within an unfamiliar environment, the high callers consistently produced more amphetamine-induced 50-kHz USVs than the low callers. Compared to the low callers, high callers showed significantly greater amphetamine CPP as well as enhanced conditioned 50-kHz USVs and locomotor activity during anticipation of amphetamine. Individual differences were stable when amphetamine was administered in test chambers, but when it was administered in home cages, low callers showed an increase in 50-kHz calling that matched the high callers. CONCLUSIONS These findings suggest that individual differences in drug-induced USVs can reveal environment-sensitive traits involved in drug-related appetitive motivation.
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Affiliation(s)
- Allison M. Ahrens
- Department of Psychology, University of Texas at Austin, Austin, TX 78712, USA; Department of Psychology, University of Michigan at Ann Arbor, Ann Arbor, MI 48109, USA
| | - Cameron W. Nobile
- Department of Psychology, University of Texas at Austin, Austin, TX 78712, USA
| | - Lindsay E. Page
- Department of Psychology, University of Texas at Austin, Austin, TX 78712, USA
| | - Esther Y. Maier
- College of Pharmacy, University of Texas at Austin, Austin, TX 78712, USA
| | | | - Timothy Schallert
- Department of Psychology, University of Texas at Austin, Austin, TX 78712, USA; Department of Psychology, University of Michigan at Ann Arbor, Ann Arbor, MI 48109, USA
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Meikle MN, Prieto JP, Urbanavicius J, López X, Abin-Carriquiry JA, Prunell G, Scorza MC. Anti-aggressive effect elicited by coca-paste in isolation-induced aggression of male rats: Influence of accumbal dopamine and cortical serotonin. Pharmacol Biochem Behav 2013; 110:216-23. [DOI: 10.1016/j.pbb.2013.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 07/09/2013] [Accepted: 07/13/2013] [Indexed: 10/26/2022]
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High anxiety is a predisposing endophenotype for loss of control over cocaine, but not heroin, self-administration in rats. Psychopharmacology (Berl) 2012; 222:89-97. [PMID: 22245944 DOI: 10.1007/s00213-011-2626-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Accepted: 12/17/2011] [Indexed: 12/16/2022]
Abstract
RATIONALE Although high anxiety is commonly associated with drug addiction, its causal role in this disorder is unclear. OBJECTIVES In light of strong evidence for dissociable neural mechanisms underlying heroin and cocaine addiction, the present study investigated whether high anxiety predicts the propensity of rats to lose control over intravenous cocaine or heroin self-administration. METHODS Sixty-four rats were assessed for anxiety in the elevated plus-maze, prior to extended access to intravenous cocaine or heroin self-administration. RESULTS High-anxious rats, identified in the lower quartile of the population, showed a greater escalation of cocaine, but not heroin, self-administration compared with low-anxious rats selected in the upper quartile of the population. Anxiety scores were also positively correlated with the extent of escalation of cocaine self-administration. CONCLUSIONS The present data suggest that high anxiety predisposes rats to lose control over cocaine-but not heroin-intake. High anxiety may therefore be a vulnerability trait for the escalation of stimulant but not opiate self-administration.
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Citó MDCDO, da Silva FCC, Silva MIG, Moura BA, Macêdo DS, Woods DJ, Fonteles MMDF, Vasconcelos SMMD, Sousa FCFD. Reversal of cocaine withdrawal-induced anxiety by ondansetron, buspirone and propranolol. Behav Brain Res 2012; 231:116-23. [DOI: 10.1016/j.bbr.2012.01.056] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 01/12/2012] [Accepted: 01/31/2012] [Indexed: 10/28/2022]
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Augier E, Vouillac C, Ahmed SH. Diazepam promotes choice of abstinence in cocaine self-administering rats. Addict Biol 2012; 17:378-91. [PMID: 21955224 DOI: 10.1111/j.1369-1600.2011.00368.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
When facing a choice between cocaine and a potent, albeit inessential, non-drug alternative (i.e. water sweetened with saccharin), most cocaine self-administering rats abstain from cocaine in favor of the non-drug pursuit, regardless of the dose available and even after extended drug use. Only a minority continues to take the drug despite the opportunity of making a different choice and increasing stakes. This pattern of individual variation could suggest that the majority of rats are resilient to addiction, taking cocaine by default of other options. Only a minority would be vulnerable to addiction. This study tested the hypothesis that rats choose to refrain from cocaine self-administration because cocaine would be conflictual, having both rewarding and anxiogenic properties. Contrary to this hypothesis, however, we report here that diazepam-a broad-spectrum benzodiazepine anxiolytic-did not decrease, but instead, further increased cocaine abstinence. Interestingly, although diazepam decreased locomotion, rats adapted to this effect by spending more time near the lever associated with the preferred reward, a behavior that minimized the need for locomotion at the moment of choice. When responding for cocaine or saccharin was analyzed separately, we found that diazepam decreased responding for cocaine without affecting responding for saccharin. Finally, the abstinence-promoting effects of diazepam were also induced in cocaine-preferring rats treated chronically with diazepam. Overall, this study demonstrates that abstinence from cocaine cannot be explained away by the anxiogenic effects of cocaine, thereby reinforcing the notion of resilience to addiction. It also supports the use of benzodiazepines in the treatment of cocaine addiction.
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Affiliation(s)
- Eric Augier
- Institut des Maladies Neurodégénératives, Université de Bordeaux, France
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Maier EY, Abdalla M, Ahrens AM, Schallert T, Duvauchelle CL. The missing variable: ultrasonic vocalizations reveal hidden sensitization and tolerance-like effects during long-term cocaine administration. Psychopharmacology (Berl) 2012; 219:1141-52. [PMID: 21870038 PMCID: PMC3266985 DOI: 10.1007/s00213-011-2445-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 08/08/2011] [Indexed: 01/26/2023]
Abstract
RATIONALE Subtypes of 50-kHz ultrasonic vocalizations (USVs) in rats are thought to reflect positive affect and occur with cocaine or amphetamine delivery. In contexts predicting forthcoming cocaine, pre-drug anticipatory USVs are initially minimal during daily sessions but gradually escalate over several weeks, presumably as the animal learns to expect and look forward to impending drug access. To gain more insight into motivational aspects of cocaine intake in animal models of drug dependence studies, it is important to compare experience-dependent changes in lever response rate, USVs, and locomotion during cocaine conditioning and extinction trials. OBJECTIVE To address whether cocaine-induced increases in lever responding and locomotor activity correspond with USV production. The study also determined whether short-term cocaine and context deprivation effects could be detected during conditioning or extinction. METHODS Rats underwent 20 days of 60-min sessions of self- or yoked administration of cocaine (0.75 mg/kg/infusion, i.v.), followed by 19 days of extinction training (8 weeks total, weekends off). RESULTS Lever responding for cocaine and cocaine-induced locomotor activity increased across conditioning sessions. In contrast, the number of frequency modulated 50-kHz USVs evoked in response to cocaine infusion decreased with cocaine experience, suggesting perhaps tolerance to the rewarding properties of the drug. In addition, USVs but not lever pressing or locomotion are affected after brief periods of drug and/or drug context abstinence. CONCLUSIONS Except for initial drug exposure, increased cocaine seeking during cocaine delivery could reflect either enhanced drug motivation or the development of drug tolerance, but not enhanced positive affect.
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Affiliation(s)
- Esther Y. Maier
- College of Pharmacy, Division of Pharmacology and Toxicology, University of Texas, Austin, TX 78712
| | - Mohamed Abdalla
- Department of Biology, University of Texas, Austin, TX 78712
| | - Allison M. Ahrens
- Department of Psychology and Institute for Neuroscience, University of Texas, Austin, TX 78712
| | - Timothy Schallert
- Department of Psychology and Institute for Neuroscience, University of Texas, Austin, TX 78712
| | - Christine L. Duvauchelle
- College of Pharmacy, Division of Pharmacology and Toxicology, University of Texas, Austin, TX 78712,Correspondence: Christine L. Duvauchelle, PhD, University of Texas at Austin, PHAR-Pharmacology, 1 University Station A1915, Austin, TX 78712-0125, Tel: + 512-471-1090, Fax: + 512-475-6088,
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Uribe-Mariño A, Francisco A, Castiblanco-Urbina MA, Twardowschy A, Salgado-Rohner CJ, Crippa JAS, Hallak JEC, Zuardi AW, Coimbra NC. Anti-aversive effects of cannabidiol on innate fear-induced behaviors evoked by an ethological model of panic attacks based on a prey vs the wild snake Epicrates cenchria crassus confrontation paradigm. Neuropsychopharmacology 2012; 37:412-21. [PMID: 21918503 PMCID: PMC3242302 DOI: 10.1038/npp.2011.188] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Several pharmacological targets have been proposed as modulators of panic-like reactions. However, interest should be given to other potential therapeutic neurochemical agents. Recent attention has been given to the potential anxiolytic properties of cannabidiol, because of its complex actions on the endocannabinoid system together with its effects on other neurotransmitter systems. The aim of this study was to investigate the effects of cannabidiol on innate fear-related behaviors evoked by a prey vs predator paradigm. Male Swiss mice were submitted to habituation in an arena containing a burrow and subsequently pre-treated with intraperitoneal administrations of vehicle or cannabidiol. A constrictor snake was placed inside the arena, and defensive and non-defensive behaviors were recorded. Cannabidiol caused a clear anti-aversive effect, decreasing explosive escape and defensive immobility behaviors outside and inside the burrow. These results show that cannabidiol modulates defensive behaviors evoked by the presence of threatening stimuli, even in a potentially safe environment following a fear response, suggesting a panicolytic effect.
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Affiliation(s)
- Andrés Uribe-Mariño
- Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto (SP), Brazil
| | - Audrey Francisco
- Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil
| | - Maria Angélica Castiblanco-Urbina
- Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto (SP), Brazil
| | - André Twardowschy
- Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil
| | - Carlos José Salgado-Rohner
- Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil
| | - José Alexandre S Crippa
- Departamento de Neurociências e Ciências do Comportamento, Setor de Psiquiatria, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil,National Institute for Science and Translational Technology in Medicine (INCT-TM, CNPq), Federal University of Rio Grande do Sul, Brazil
| | - Jaime Eduardo Cecílio Hallak
- Departamento de Neurociências e Ciências do Comportamento, Setor de Psiquiatria, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil,National Institute for Science and Translational Technology in Medicine (INCT-TM, CNPq), Federal University of Rio Grande do Sul, Brazil
| | - Antônio Waldo Zuardi
- Departamento de Neurociências e Ciências do Comportamento, Setor de Psiquiatria, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil
| | - Norberto Cysne Coimbra
- Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Ribeirão Preto (SP), Brasil,Institute for Neuroscience and Behaviour (INeC), Ribeirão Preto (SP), Brazil,Laboratório de Neuroanatomia and Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (USP), Avenida dos Bandeirantes, 3900, Ribeirão Preto (SP), 14049-900, Brasil. Tel: +55 16 3602 3116, Fax: +55 16 3602 3349, E-mail:
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Stewart A, Wu N, Cachat J, Hart P, Gaikwad S, Wong K, Utterback E, Gilder T, Kyzar E, Newman A, Carlos D, Chang K, Hook M, Rhymes C, Caffery M, Greenberg M, Zadina J, Kalueff AV. Pharmacological modulation of anxiety-like phenotypes in adult zebrafish behavioral models. Prog Neuropsychopharmacol Biol Psychiatry 2011; 35:1421-31. [PMID: 21122812 DOI: 10.1016/j.pnpbp.2010.11.035] [Citation(s) in RCA: 171] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 11/23/2010] [Accepted: 11/23/2010] [Indexed: 12/25/2022]
Abstract
Zebrafish (Danio rerio) are becoming increasingly popular in neurobehavioral research. Here, we summarize recent data on behavioral responses of adult zebrafish to a wide spectrum of putative anxiolytic and anxiogenic agents. Using the novel tank test as a sensitive and efficient behavioral assay, zebrafish anxiety-like behavior can be bi-directionally modulated by drugs affecting the gamma-aminobutyric acid, monoaminergic, cholinergic, glutamatergic and opioidergic systems. Complementing human and rodent data, zebrafish drug-evoked phenotypes obtained in this test support this species as a useful model for neurobehavioral and psychopharmacological research.
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Affiliation(s)
- Adam Stewart
- Department of Pharmacology and Zebrafish Neuroscience Research Consortium, Tulane University Medical School, 1430 Tulane Avenue, New Orleans, LA 70112, USA
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Warren BL, Iñiguez SD, Alcantara LF, Wright KN, Parise EM, Weakley SK, Bolaños-Guzmán CA. Juvenile administration of concomitant methylphenidate and fluoxetine alters behavioral reactivity to reward- and mood-related stimuli and disrupts ventral tegmental area gene expression in adulthood. J Neurosci 2011; 31:10347-58. [PMID: 21753012 PMCID: PMC3139175 DOI: 10.1523/jneurosci.1470-11.2011] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 05/17/2011] [Accepted: 05/20/2011] [Indexed: 12/13/2022] Open
Abstract
There is a rise in the concurrent use of methylphenidate (MPH) and fluoxetine (FLX) in pediatric populations. However, the long-term neurobiological consequences of combined MPH and FLX treatment (MPH + FLX) during juvenile periods are unknown. We administered saline (VEH), MPH, FLX, or MPH + FLX to juvenile Sprague Dawley male rats from postnatal day 20 to 34, and assessed their reactivity to reward- and mood-related stimuli 24 h or 2 months after drug exposure. We also assessed mRNA and protein levels within the ventral tegmental area (VTA) to determine the effect of MPH, FLX, or MPH + FLX on the extracellular signal-regulated protein kinase-1/2 (ERK) pathway--a signaling cascade implicated in motivation and mood regulation. MPH + FLX enhanced sensitivity to drug (i.e., cocaine) and sucrose rewards, as well as anxiety (i.e., elevated plus maze)- and stress (i.e., forced swimming)-eliciting situations when compared with VEH-treated rats. MPH + FLX exposure also increased mRNA of ERK2 and its downstream targets cAMP response element-binding protein (CREB), BDNF, c-Fos, early growth response protein-1 (Zif268), and mammalian target of rapamycin (mTOR), and also increased protein phosphorylation of ERK2, CREB, and mTOR 2 months after drug exposure when compared with VEH-treated rats. Using herpes simplex virus-mediated gene transfer to block ERK2 activity within the VTA, we rescued the MPH and FLX-induced behavioral deficits seen in the forced-swimming task 2 months after drug treatment. These results indicate that concurrent MPH + FLX exposure during preadolescence increases sensitivity to reward-related stimuli while simultaneously enhancing susceptibility to stressful situations, at least in part, due to long-lasting disruptions in ERK signaling within the VTA.
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Affiliation(s)
- Brandon L. Warren
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
| | - Sergio D. Iñiguez
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
- Department of Psychology, California State University, San Bernardino, California 92407
| | - Lyonna F. Alcantara
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
| | - Katherine N. Wright
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
| | - Eric M. Parise
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
| | - Sarah K. Weakley
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
| | - Carlos A. Bolaños-Guzmán
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida 32306, and
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Influence of new deltorphin analogues on reinstatement of cocaine-induced conditioned place preference in rats. Behav Pharmacol 2010; 21:638-48. [DOI: 10.1097/fbp.0b013e32833e7e97] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Johns JM, McMurray MS, Joyner PW, Jarrett TM, Williams SK, Cox ET, Black MA, Middleton CL, Walker CH. Effects of chronic and intermittent cocaine treatment on dominance, aggression, and oxytocin levels in post-lactational rats. Psychopharmacology (Berl) 2010; 211:175-85. [PMID: 20526586 PMCID: PMC2910929 DOI: 10.1007/s00213-010-1877-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Accepted: 04/29/2010] [Indexed: 11/26/2022]
Abstract
RATIONALE Little is known about mechanisms underlying female rodent aggression during the late postpartum period with no pups present. Studies of aggression, dominance, and oxytocin (OT) response in cocaine-treated females are sparse. OBJECTIVES This study was designed to examine dominance (drinking success) and aggression in a limited-access drinking model of water competition. Acute OT level measures were made on postpartum day (PPD) 36 in several brain regions of interest. Chronic and intermittent cocaine- and saline-treated and untreated rats 10 days post-weaning were tested (without pups) over PPDs 31-35 following cessation of cocaine treatment 10-30 days before testing. METHODS Subjects were water-deprived overnight, and triads consisting of an untreated control (UN), a chronic continuous saline-treated (CS), and chronic continuous cocaine-treated (CC; 30 mg/kg/day throughout gestation) or a UN, an intermittent saline-treated (IS), and an intermittent cocaine-treated (IC; 30 mg/kg two consecutive days every 4 days throughout gestation until PPD 20) female were tested for aggression and drinking behavior during 5 min sessions on five consecutive days. The amygdala, medial preoptic area (MPOA), and ventral tegmental area were assayed for OT levels. RESULTS CC and IC females were more aggressive than controls, but only IC females drank more often than controls. OT levels were lower in the MPOA of IC and CC females than in controls. CONCLUSIONS Findings demonstrate that long after cessation of treatment, CC- and IC-treated non-lactating females (no pups present) had higher rates of aggression, altered drinking behavior, and acutely lower MPOA OT levels.
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Affiliation(s)
- Josephine M Johns
- Department of Psychiatry, University of North Carolina, 430 Taylor Hall, CB# 7096, Chapel Hill, NC 27599, USA.
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Greenwald MK, Chiodo LM, Hannigan JH, Sokol RJ, Janisse J, Delaney-Black V. Teens with heavy prenatal cocaine exposure respond to experimental social provocation with escape not aggression. Neurotoxicol Teratol 2010; 33:198-204. [PMID: 20600841 DOI: 10.1016/j.ntt.2010.06.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 02/19/2010] [Accepted: 06/20/2010] [Indexed: 10/19/2022]
Abstract
Preclinical data show that, compared to no exposure, prenatal cocaine exposure (PCE) has age-dependent effects on social interaction and aggression. The aim of this clinical study was to determine how heavy/persistent PCE--after controlling for other prenatal drug exposures, sex and postnatal factors--predicts behavioral sensitivity to provocation (i.e., reactive aggression) using a well-validated human laboratory model of aggression. African American teens (mean=14.2 years old) with histories of heavy/persistent PCE (maternal cocaine use ≥ 2 times/week during pregnancy, or positive maternal or infant urine/meconium test at delivery; n=86) or none/some exposure (NON: maternal cocaine use < 2 times/week during pregnancy; n=330) completed the Point Subtraction Aggression Paradigm. In this task, teens competed in a computer game against a fictitious opponent. There were three possible responses: (a) earn points, to exchange for money later; or (b) "aggress" against the fictitious opponent by subtracting their points; or (c) escape temporarily from point subtraction perpetrated by the fictitious opponent. The PCE group responded significantly more frequently on the escape option than the NON group, but did not differ in aggressive or money-earning responses. These data indicate that PCE-teens provoked with a social stressor exhibit a behavioral preference for escape (negative reinforcement) than for aggressive (retaliatory) or appetitive (point- or money-reinforced) responses. These findings are consistent with preclinical data showing that social provocation of adolescent or young adult offspring after PCE is associated with greater escape behavior, inferring greater submission, social withdrawal, or anxiety, as opposed to aggressive behavior.
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Affiliation(s)
- M K Greenwald
- Department of Psychiatry & Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.
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Xu X, Mughal MR, Scott Hall F, Perona MTG, Pistell PJ, Lathia JD, Chigurupati S, Becker KG, Ladenheim B, Niklason LE, Uhl GR, Cadet JL, Mattson MP. Dietary restriction mitigates cocaine-induced alterations of olfactory bulb cellular plasticity and gene expression, and behavior. J Neurochem 2010; 114:323-34. [PMID: 20456017 DOI: 10.1111/j.1471-4159.2010.06782.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Because the olfactory system plays a major role in food consumption, and because 'food addiction' and associated morbidities have reached epidemic proportions, we tested the hypothesis that dietary energy restriction can modify adverse effects of cocaine on behavior and olfactory cellular and molecular plasticity. Mice maintained on an alternate day fasting (ADF) diet exhibited increased baseline locomotion and increased cocaine-sensitized locomotion during cocaine conditioning, despite no change in cocaine conditioned place preference, compared with mice fed ad libitum. Levels of dopamine and its metabolites in the olfactory bulb (OB) were suppressed in mice on the ADF diet compared with mice on the control diet, independent of acute or chronic cocaine treatment. The expression of several enzymes involved in dopamine metabolism including tyrosine hydroxylase, monoamine oxidases A and B, and catechol-O-methyltransferase were significantly reduced in OBs of mice on the ADF diet. Both acute and chronic administration of cocaine suppressed the production of new OB cells, and this effect of cocaine was attenuated in mice on the ADF diet. Cocaine administration to mice on the control diet resulted in up-regulation of OB genes involved in mitochondrial energy metabolism, synaptic plasticity, cellular stress responses, and calcium- and cAMP-mediated signaling, whereas multiple olfactory receptor genes were down-regulated by cocaine treatment. ADF abolished many of the effects of cocaine on OB gene expression. Our findings reveal that dietary energy intake modifies the neural substrates underlying some of the behavioral and physiological responses to repeated cocaine treatment, and also suggest novel roles for the olfactory system in addiction. The data further suggest that modification of dietary energy intake could provide a novel potential approach to addiction treatments.
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Affiliation(s)
- Xiangru Xu
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland, USA
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Weiss F. Advances in Animal Models of Relapse for Addiction Research. ADVANCES IN THE NEUROSCIENCE OF ADDICTION 2010. [DOI: 10.1201/9781420007350-c1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Fowler SC, Zarcone TJ, Levant B. Methylphenidate attenuates rats' preference for a novel spatial stimulus introduced into a familiar environment: assessment using a force-plate actometer. J Neurosci Methods 2010; 189:36-43. [PMID: 20346982 DOI: 10.1016/j.jneumeth.2010.03.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2009] [Revised: 03/15/2010] [Accepted: 03/16/2010] [Indexed: 10/19/2022]
Abstract
Methylphenidate is a psychostimulant widely used in the treatment of attention deficit hyperactivity disorder (ADHD). Here we report a novel paradigm that affords inferences about habituation and attention to a novel stimulus in a familiar environment in a single test session without prior training of the animals. The paradigm was used to assess the effects of methylphenidate (2.5 and 5.0mg/kg, sc) in young adult, male, Long-Evans rats. Methylphenidate increased locomotor activity during the initial exposure to the test apparatus in a non-dose-related manner. However, upon introduction of a novel spatial stimulus (an alcove) in the familiar environment, methylphenidate-treatment resulted in dose-related increases in distance traveled and inhibition of long dwell times in the alcove, the latter behavior being characteristic of vehicle-treated rats' response to the alcove condition. These results demonstrate the utility of this paradigm in the elucidation of the behavioral effects of a drug commonly used in the treatment of ADHD. Findings also suggest that species-typical response preferences in rats (e.g., refuge-seeking) may emerge in experimental settings that add spatial novelty to otherwise featureless test enclosures commonly used to assess locomotor activity.
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Affiliation(s)
- Stephen C Fowler
- Department of Pharmacology & Toxicology, University of Kansas, Lawrence, KS 66045, USA
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Santucci AC, Rosario A. Anxiety-like responses in adolescent rats following a 10–11-day withdrawal period from repeated cocaine administration. Brain Res Bull 2010; 81:441-4. [DOI: 10.1016/j.brainresbull.2009.11.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 11/05/2009] [Accepted: 11/26/2009] [Indexed: 02/04/2023]
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Jones JD, Hall FS, Uhl GR, Riley AL. Dopamine, norepinephrine and serotonin transporter gene deletions differentially alter cocaine-induced taste aversion. Pharmacol Biochem Behav 2010; 94:580-7. [PMID: 19969013 PMCID: PMC3104319 DOI: 10.1016/j.pbb.2009.11.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 11/23/2009] [Accepted: 11/30/2009] [Indexed: 11/16/2022]
Abstract
Although cocaine is primarily known for its powerful hedonic effects, there is evidence that its affective experience has a notable aversive component that is less well understood. A variety of pharmacological and molecular approaches have implicated enhanced monoamine (MA) neurotransmission in the aversive effects of cocaine. Although numerous studies have yielded data supportive of the role of the monoamines (indirectly and directly), the specific system suggested to be involved differs across studies and paradigms (Freeman et al., 2005b; Grupp, 1997; Roberts and Fibiger, 1997). Monoamine transporter knockout mice have been useful in the study of many different aspects of cocaine effects relevant to human drug use and addiction, yet an assessment of the effects of deletion of the genes for the dopamine, norepinephrine and serotonin transporters (DAT, NET, and SERT, respectively) on cocaine's aversive properties has yet to be performed (Uhl et al., 2002). In the current investigation, the strength of cocaine-induced aversions was compared among three groups of transgenic mice with deletions of the genes responsible for the production of one of the monoamine transporters. When compared to their respective WT controls, dopamine transporter deletion slightly attenuated cocaine-induced aversion while deletion of SERT or NET resulted in a more significant delay in the onset and strength of cocaine-induced taste aversions. The data lead us to conclude that the action of cocaine to inhibit NET contributes most substantially to its aversive effects, with some involvement of SERT and minimal contribution of DAT.
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Affiliation(s)
- Jermaine D Jones
- Psychopharmacology Laboratory, Department of Psychology, American University, Washington, D.C., USA.
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Niigaki ST, Silva RH, Patti CL, Cunha JLS, Kameda SR, Correia-Pinto JC, Takatsu-Coleman AL, Levin R, Abílio VC, Frussa-Filho R. Amnestic effect of cocaine after the termination of its stimulant action. Prog Neuropsychopharmacol Biol Psychiatry 2010; 34:212-8. [PMID: 19932146 DOI: 10.1016/j.pnpbp.2009.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 10/21/2009] [Accepted: 11/11/2009] [Indexed: 10/20/2022]
Abstract
The effects of cocaine on memory are controversial. Furthermore, the psychostimulant action of cocaine can be a critical issue in the interpretation of its effects on learning/memory models. The effects of a single administration of cocaine on memory were investigated during the presence of its motor stimulating effect or just after its termination. The plus-maze discriminative avoidance task (PM-DAT) was used because it provides simultaneous information about memory, anxiety and motor activity. In Experiment I, mice received saline, 7.5, 10, 15 or 30 mg/kg cocaine 5 min before the training session. In Experiment II, mice were trained 30 min after the injection of saline, 7.5, 10, 15 or 30 mg/kg cocaine. In Experiment III, mice received 30 mg/kg cocaine 30 min pre-training and pre-test. In Experiment IV, mice received 30 mg/kg cocaine immediately post-training. Tests were always conducted 24 h following the training session. Given 5 min before training, cocaine promoted a motor stimulant effect at the highest dose during the training session but did not impair memory. When cocaine was injected 30 min pre-training, the drug did not modify motor activity, but produced marked amnestic effects at all doses tested. This amnesia induced by cocaine given 30 min pre-training was not related to a state-dependent learning because it was not abolished by pre-test administration of the drug. Post-training cocaine administration did not induce memory deficits either. Our results suggest that the post-stimulant phase is the critical moment for cocaine-induced memory deficit in a discriminative task in mice.
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Affiliation(s)
- S T Niigaki
- Department of Pharmacology, Universidade Federal de São Paulo, R. Botucatu, 862, Ed. Leal Prado, 1 andar, 04023062, São Paulo, SP, Brazil
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Twining RC, Bolan M, Grigson PS. Yoked delivery of cocaine is aversive and protects against the motivation for drug in rats. Behav Neurosci 2009; 123:913-25. [PMID: 19634952 DOI: 10.1037/a0016498] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In Experiment 1, water-deprived rats had 5-min access to saccharin followed by active or yoked intravenous delivery of saline or cocaine (0.33 mg/infusion). Both cocaine groups avoided intake of the saccharin cue following saccharin-cocaine pairings; however, the rats in the yoked condition exhibited greater avoidance of the taste cue than did the actively administering rats. Experiment 2 evaluated subsequent self-administration behavior on fixed- and progressive-ratio schedules of reinforcement. The results showed that prior yoked exposure to cocaine reduced subsequent drug-taking behavior on a progressive-ratio but not on a fixed-ratio schedule. Finally, Experiment 3 used a choice test to determine the impact of yoked drug delivery on the relative preference for cocaine versus water. The results showed that rats with a history of self-administering cocaine preferred to perform operant behaviors on the side of the chamber previously paired with cocaine, whereas the rats with a history of yoked delivery of cocaine avoided this side. These data show that, in most rats, the unpredictable, uncontrollable delivery of cocaine protects against the subsequent motivation for cocaine through an aversive mechanism.
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Affiliation(s)
- Robert C Twining
- Department of Neural and Behavioral Sciences, Pennsylvania State College of Medicine, Hershey, USA.
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Masini CV, Garcia RJ, Sasse SK, Nyhuis TJ, Day HEW, Campeau S. Accessory and main olfactory systems influences on predator odor-induced behavioral and endocrine stress responses in rats. Behav Brain Res 2009; 207:70-7. [PMID: 19800371 DOI: 10.1016/j.bbr.2009.09.038] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 09/23/2009] [Accepted: 09/25/2009] [Indexed: 01/29/2023]
Abstract
Exposures to predator odors are very effective methods to evoke a variety of stress responses in rodents. We have previously found that ferret odor exposure leads to changes in endocrine hormones (corticosterone and ACTH) and behavior. To distinguish the contributions of the main and accessory olfactory systems in these responses, studies were designed to interfere with these two systems either independently, or simultaneously. Male Sprague-Dawley rats were treated with 10% zinc sulfate (ZnSO(4)), which renders rodents anosmic (unable to smell) while leaving the accessory olfactory areas intact, or saline, in Experiment 1. In Experiment 2, the vomeronasal organs of rats were surgically removed (VNX) to block accessory olfactory processing, while leaving the main olfactory system intact. And in the third experiment both the main and accessory olfactory areas were disrupted by combining the two procedures in the same rats. Neither ZnSO(4) treatment nor VNX alone reliably reduced the increased corticosterone response to ferret odor compared to strawberry odor, but in combination, they did. This suggests that processing through the main or the accessory olfactory system can elicit the endocrine stress response to ferret odor. VNX alone also did not affect the behavioral responses to the ferret odor. ZnSO(4) treatment, alone and in combination with VNX, led to changes in behavior in response to both ferret and strawberry odor, making the behavioral results less clearly interpretable. Overall these studies suggest that both the main and accessory olfactory systems mediate the neuroendocrine response to predator odor.
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Affiliation(s)
- Cher V Masini
- Department of Psychology and Neuroscience & Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA.
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Jones JD, Hall FS, Uhl GR, Rice K, Riley AL. Differential involvement of the norepinephrine, serotonin and dopamine reuptake transporter proteins in cocaine-induced taste aversion. Pharmacol Biochem Behav 2009; 93:75-81. [PMID: 19376154 PMCID: PMC3089432 DOI: 10.1016/j.pbb.2009.04.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Revised: 04/03/2009] [Accepted: 04/09/2009] [Indexed: 11/16/2022]
Abstract
Despite the impact of cocaine's aversive effects on its abuse potential, the neurochemical basis of these aversive effects remains poorly understood. By blocking the reuptake of the monoamine neurotransmitters dopamine (DA), norepinephrine (NE) and serotonin (5-HT) into the presynaptic terminal, cocaine acts as a potent indirect agonist of each of these systems. The following studies attempted to assess the extent of monoaminergic mediation of cocaine's aversive effects using conditioned taste aversion (CTA) learning [Garcia, J., Kimeldorf, D.J., Koelling, R.A., Conditioned aversion to saccharin resulting from exposure to gamma radiation. Science 1955;122:157-158.]. Specifically, Experiment 1 assessed the ability of selective monoamine transporter inhibitors, e.g., DAT (vanoxerine), NET (nisoxetine) and SERT (fluoxetine), to induce taste aversions (relative to cocaine). Only the NET inhibitor approximated the aversive strength of cocaine. Experiment 2 compared the effects of pretreatment of each of these transport inhibitors on the development of a cocaine-induced CTA. Pretreatment with nisoxetine and fluoxetine both attenuated cocaine-induced aversions in a manner comparable to that produced by cocaine itself. The DAT inhibitor was without effect. Combined, the results of these investigations indicate little or no involvement of dopaminergic systems in cocaine's aversive effects while NE appears to contribute most substantially, with a possible modulatory involvement by serotonin.
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Affiliation(s)
- Jermaine D Jones
- Substance Use Research Center, New York State Psychiatric Institute/Columbia University, 1051 Riverside Dr., New York, NY 10032, USA.
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Freet CS, Steffen C, Nestler EJ, Grigson PS. Overexpression of DeltaFosB is associated with attenuated cocaine-induced suppression of saccharin intake in mice. Behav Neurosci 2009; 123:397-407. [PMID: 19331462 DOI: 10.1037/a0015033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rodents suppress intake of saccharin when it is paired with a drug of abuse (Goudie, Dickins, & Thornton, 1978; Risinger & Boyce, 2002). By the authors' account, this phenomenon, referred to as reward comparison, is thought to be mediated by anticipation of the rewarding properties of the drug (P. S. Grigson, 1997; P. S. Grigson & C. S. Freet, 2000). Although a great deal has yet to be discovered regarding the neural basis of reward and addiction, it is known that overexpression of DeltaFosB is associated with an increase in drug sensitization and incentive. Given this, the authors reasoned that overexpression of DeltaFosB should also support greater drug-induced devaluation of a natural reward. To test this hypothesis, NSE-tTA x TetOp-DeltaFosB mice (Chen et al., 1998) with normal or overexpressed DeltaFosB in the striatum were given access to a saccharin cue and then injected with saline, 10 mg/kg cocaine, or 20 mg/kg cocaine. Contrary to the original prediction, overexpression of DeltaFosB was associated with attenuated cocaine-induced suppression of saccharin intake. It is hypothesized that elevation of DeltaFosB not only increases the reward value of drug, but the reward value of the saccharin cue as well.
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Affiliation(s)
- Christopher S Freet
- Department of Neural and Behavioral Sciences, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
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Paliperidone suppresses the development of the aggressive phenotype in a developmentally sensitive animal model of escalated aggression. Psychopharmacology (Berl) 2009; 203:653-63. [PMID: 19066856 DOI: 10.1007/s00213-008-1412-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Accepted: 11/03/2008] [Indexed: 12/23/2022]
Abstract
RATIONALE Atypical antipsychotics are commonly prescribed to clinically referred youngsters for treatment of heightened aggressive behavior associated with various psychiatric disorders. Previously, we demonstrated risperidone's anti-aggressive effects using a well-validated animal model of offensive aggression. Paliperidone, the main active metabolite of risperidone, is a potent serotonin-2A and dopamine-2 receptor antagonist with slightly different pharmacodynamic properties compared to risperidone. Given that much of risperidone's therapeutic efficacy is due to its active metabolite, paliperidone may effectively suppress aggression with fewer adverse side effects. OBJECTIVES Investigate whether paliperidone administration would reduce heightened aggressive behavior induced by low-dose cocaine exposure in a developmentally sensitive model of offensive aggression. MATERIALS AND METHODS Male Syrian hamsters (n = 12/group) were administered an acute dose of paliperidone (0.05, 0.1, 0.2, and 0.3 mg/kg) and then tested for aggressive behavior using the resident-intruder paradigm. To investigate the effects of chronic paliperidone administration, a separate set of animals (n = 12/group) was exposed to repeated paliperidone administration (0.1 mg kg(-1) day(-1)) during different developmental periods and varying lengths of time (1-4 weeks). RESULTS Experiment 1 results revealed a dose-dependent decrease in bite and attack behaviors with an effective dose observed at 0.1 mg/kg. In Experiment 2, the maximal reduction in aggressive behavior in response to chronic paliperidone treatment was observed in animals treated during the third week of adolescence, and this reduction occurred without concomitant alterations in non-aggressive behaviors. CONCLUSIONS These results support the specific aggression-suppressing properties of paliperidone and the potential use of this compound in the treatment of maladaptive aggression in clinical settings.
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