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Briânis RC, Iglesias LP, Bedeschi LG, Moreira FA. Effects of cannabidiol on reward contextual memories induced by cocaine in male and female mice. Acta Neuropsychiatr 2023:1-8. [PMID: 37968964 DOI: 10.1017/neu.2023.53] [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] [Indexed: 11/17/2023]
Abstract
OBJECTIVE Preclinical studies suggest that cannabidiol (CBD), a non-intoxicating phytocannabinoid, may reduce addiction-related behaviours for various drug classes in rodents, including ethanol, opiates, and psychostimulants. CBD modulates contextual memories and responses to reward stimuli. Nonetheless, research on the impact of CBD on cocaine addiction-like behaviors is limited and requires further clarification. This study tested the hypothesis that CBD administration inhibits the acquisition and retrieval of cocaine-induced conditioned place preference (CPP) in adult male and female C57BL6/J mice. We also ought to characterise a 5-day CPP protocol in these animals. METHODS Male and female C57BL/6J mice were administered CBD (3, 10, and 30 mg/kg) 30 minutes before cocaine (15 mg/kg) acquisition of expression of CPP. RESULTS Cocaine induces a CPP in both female and male mice in the 5-day CPP protocol. CBD failed to prevent the acquisition or retrieval of place preference induced by cocaine. CBD did not decrease the time spent on the side paired with cocaine at any of the doses tested in male and female mice, in either acquisition or expression of contextual memory. CONCLUSION This study found no support for the hypothesis that CBD decreases reward memory involved in the formation of cocaine addiction. Further research is necessary to investigate the involvement of CBD in other behavioural responses to cocaine and other psychostimulant drugs. This study, however, characterised a 5-day CPP protocol for both female and male C57BL/6J mice.
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Affiliation(s)
- Rayssa C Briânis
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lia P Iglesias
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lucas G Bedeschi
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fabrício A Moreira
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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2
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Carroll ME, Dougen B, Zlebnik NE, Fess L, Smethells J. Reducing short- and long-term cocaine craving with voluntary exercise in male rats. Psychopharmacology (Berl) 2022; 239:3819-3831. [PMID: 36331585 DOI: 10.1007/s00213-022-06251-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/02/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND In a previous study in female rats, voluntary wheel running attenuated incubation of cocaine craving after 30 but not 3 days (Zlebnik and Carroll Zlebnik and Carroll, Psychopharmacology 232:3507-3413, 2015). The present study in male rats, using the same procedure, showed that wheel running reduced incubated craving after both 30 and 3 days of abstinence. METHODS Male rats self-administered i.v. cocaine (0.4 mg/kg) during 6-h sessions for 10 days. They were then moved from the operant chamber to a home cage with an attached running wheel or stationary wheel, for 6 h daily for a 3- or 30-day period when cocaine craving was hypothesized to incubate. Rats were then returned to the operant chamber for a 30-min test of cocaine seeking, or "craving," indicated by responses on the former "drug" lever was formerly associated with drug stimulus lights and responses (vs. no drug stimuli), and lever responding was compared to responses on the "inactive" that was illuminated and counted lever pressing. RESULTS Mean wheel revolutions were similar across the 3- and 30-day incubation groups, when both groups of rats were given access to wheel running vs. access to a stationary wheel in controls. Subsequently, when rats were tested in the operant chamber for "relapse" responding (drug-lever responding) on the lever formerly associated with drug access, cocaine craving was reduced by recent running wheel access (vs. stationary wheel access) in both the 3- and 30-day wheel exposure groups. CONCLUSION Voluntary, self-initiated, and self-sustained physical exercise reduced cocaine craving after short- (3 days) and long-term (30 days) abstinence periods in male rats that previously self-administered cocaine. This was contrasted with reduction of cocaine seeking in females after 30-day, but not 3-day, incubation periods under the wheel running vs. stationary wheel conditions in a previous study (Zlebnik and Carroll Zlebnik and Carroll, Psychopharmacology 232:3507-3413, 2015). These initial findings suggest males may be more sensitive to incubated craving for cocaine than females.
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Affiliation(s)
- Marilyn E Carroll
- Department of Psychiatry, University of Minnesota, MMC 392, Minneapolis, MN, 55455, USA.
| | - Ben Dougen
- Department of Psychiatry, University of Minnesota, MMC 392, Minneapolis, MN, 55455, USA
| | - Natalie E Zlebnik
- Department of Psychiatry, University of Minnesota, MMC 392, Minneapolis, MN, 55455, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, HSF II, Room S216, 20 Penn St, Baltimore, MD, 21201, USA
| | - Lydia Fess
- Department of Psychiatry, University of Minnesota, MMC 392, Minneapolis, MN, 55455, USA
| | - John Smethells
- Hennepin Healthcare Research Institute, 701 Park Avenue, Minneapolis, MN, 55415, USA
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Wainwright V, Dawson A. The prevalence of comorbid substance use disorders and serious mental illnesses in prisons. THE LANCET PUBLIC HEALTH 2022; 7:e492-e493. [DOI: 10.1016/s2468-2667(22)00115-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 11/29/2022] Open
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4
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The role of context on responding to an alcohol-predictive cue in female and male rats. Alcohol 2022; 99:70-81. [PMID: 34742865 DOI: 10.1016/j.alcohol.2021.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/07/2021] [Accepted: 10/26/2021] [Indexed: 11/21/2022]
Abstract
In male rats, physical contexts that are associated with alcohol can amplify the response to a discrete, alcohol-predictive conditioned stimulus (CS), and amplify prime-induced reinstatement. Here, we examined these effects as a function of biological sex. Male and female Long-Evans rats were acclimated to drinking ethanol (15% v/v) in their home cages. Next, they were trained to associate an auditory conditioned stimulus (CS) (10 s; white noise or clicker; 15 trials per session) with ethanol delivery (0.2 mL per CS; 3.0 mL per session) into a fluid port for oral intake. Training occurred in a distinctive context containing specific visual, olfactory, and tactile stimuli. During alternating sessions, rats were exposed to a second context wherein they did not receive ethanol. At test, CS trials occurred in both contexts without ethanol delivery. Rats then underwent extinction using repeated unreinforced presentations of the CS in both contexts. An alcohol-primed reinstatement test was then conducted, in which 0.2 mL of ethanol was presented at the start of the session and during the first CS trial, after which no ethanol was delivered for the remainder of the session. At both test and reinstatement, male rats made significantly more CS port-entries in the context associated with alcohol delivery than in the context in which alcohol was never experienced. Unlike males, female rats made a similar number of CS port-entries at the test in both the alcohol context and the neutral context. The reinstatement observed in female rats was also not affected by context. These findings suggest that the capacity of an alcohol-associated context to modulate responding to a discrete, alcohol-predictive cue is less pronounced in female than male rats.
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Cahill S, Chandola T, Hager R. Genetic Variants Associated With Resilience in Human and Animal Studies. Front Psychiatry 2022; 13:840120. [PMID: 35669264 PMCID: PMC9163442 DOI: 10.3389/fpsyt.2022.840120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 04/19/2022] [Indexed: 11/15/2022] Open
Abstract
Resilience is broadly defined as the ability to maintain or regain functioning in the face of adversity and is influenced by both environmental and genetic factors. The identification of specific genetic factors and their biological pathways underpinning resilient functioning can help in the identification of common key factors, but heterogeneities in the operationalisation of resilience have hampered advances. We conducted a systematic review of genetic variants associated with resilience to enable the identification of general resilience mechanisms. We adopted broad inclusion criteria for the definition of resilience to capture both human and animal model studies, which use a wide range of resilience definitions and measure very different outcomes. Analyzing 158 studies, we found 71 candidate genes associated with resilience. OPRM1 (Opioid receptor mu 1), NPY (neuropeptide Y), CACNA1C (calcium voltage-gated channel subunit alpha1 C), DCC (deleted in colorectal carcinoma), and FKBP5 (FKBP prolyl isomerase 5) had both animal and human variants associated with resilience, supporting the idea of shared biological pathways. Further, for OPRM1, OXTR (oxytocin receptor), CRHR1 (corticotropin-releasing hormone receptor 1), COMT (catechol-O-methyltransferase), BDNF (brain-derived neurotrophic factor), APOE (apolipoprotein E), and SLC6A4 (solute carrier family 6 member 4), the same allele was associated with resilience across divergent resilience definitions, which suggests these genes may therefore provide a starting point for further research examining commonality in resilience pathways.
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Affiliation(s)
- Stephanie Cahill
- Evolution, Infection and Genomics, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom.,Faculty of Humanities, Cathie Marsh Institute for Social Research, The University of Manchester, Manchester, United Kingdom
| | - Tarani Chandola
- Faculty of Humanities, Cathie Marsh Institute for Social Research, The University of Manchester, Manchester, United Kingdom.,Methods Hub, Department of Sociology, Faculty of Social Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Reinmar Hager
- Evolution, Infection and Genomics, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
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Joue G, Chakroun K, Bayer J, Gläscher J, Zhang L, Fuss J, Hennies N, Sommer T. Sex Differences and Exogenous Estrogen Influence Learning and Brain Responses to Prediction Errors. Cereb Cortex 2021; 32:2022-2036. [PMID: 34649284 DOI: 10.1093/cercor/bhab334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 11/14/2022] Open
Abstract
Animal studies show marked sex differences as well as effects of estrogen (E2) in the mesocorticolimbic dopaminergic (DA) pathways, which play a critical role in reward processing and reinforcement learning and are also implicated in drug addiction. In this computational pharmacological fMRI study, we investigate the effects of both factors, sex and estrogen, on reinforcement learning and the dopaminergic system in humans; 67 male and 64 naturally cycling female volunteers, the latter in their low-hormone phase, were randomly assigned, double-blind, to take E2 or placebo. They completed a reinforcement learning task in the MRI scanner for which we have previously shown reward prediction error (RPE)-related activity to be dopaminergic. We found RPE-related brain activity to be enhanced in women compared with men and to a greater extent when E2 levels were elevated in both sexes. However, both factors, female sex and E2, slowed adaptation to RPEs (smaller learning rate). This discrepancy of larger RPE-related activity yet smaller learning rates can be explained by organizational sex differences and activational effects of circulating E2, which both affect DA release differently to DA receptor binding capacities.
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Affiliation(s)
- Gina Joue
- Institute of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Karima Chakroun
- Institute of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Janine Bayer
- Institute of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Jan Gläscher
- Institute of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Lei Zhang
- Social, Cognitive and Affective Neuroscience Unit, Department of Cognition, Emotion, and Methods in Psychology, Faculty of Psychology, University of Vienna, 1010 Vienna, Austria
| | - Johannes Fuss
- Institute for Sex Research, Sexual Medicine and Forensic Psychiatry, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Nora Hennies
- Institute of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Tobias Sommer
- Institute of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
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Castro-Zavala A, Martín-Sánchez A, Valverde O. Sex differences in the vulnerability to cocaine's addictive effects after early-life stress in mice. Eur Neuropsychopharmacol 2020; 32:12-24. [PMID: 31918976 DOI: 10.1016/j.euroneuro.2019.12.112] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 11/13/2019] [Accepted: 12/13/2019] [Indexed: 01/28/2023]
Abstract
Even though men are more likely to use drugs, women tend to progress faster from drug use to drug abuse, especially in the case of psychostimulants such as cocaine. Preclinical studies evaluating the differences in cocaine self-administration (SA) between sexes are contradictory. While some have shown no between-sex differences, others have reported female rodents to acquire higher percentages of cocaine SA criteria. Furthermore, early-life adversity is a risk factor for substance-use disorder and clinical evidence showed that women who have experienced childhood adversity are more likely to use drugs in comparison with males. However, the molecular differences between sexes as a consequence of early-life adversity or cocaine consumption have scarcely been explored. The aim of our study was to evaluate the differences in the expression of the GluA1, GluA2 subunits of AMPA receptors, pCREB and CREB in male and female mice exposed to maternal separation with early weaning (MSEW). Moreover, we evaluated the effects of cocaine SA in both sexes during adulthood, and the possible changes in GluA1, GluA2, pCREB and CREB expressions. Our results showed a higher acquisition percentage in females and an MSEW-induced increase in cocaine-seeking solely in males. Additionally, we observed sex differences in GluA1, GluA2, CREB and pCREB levels in the NAc and the VTA. The present results displayed changes in molecules that play a crucial role in the regulation of the rewarding effects of cocaine, helping to elucidate the mechanisms involved in the progression from cocaine use to cocaine abuse in both females and males.
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Affiliation(s)
- Adriana Castro-Zavala
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Dr. Aiguader 88, Barcelona 08003, Spain
| | - Ana Martín-Sánchez
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Dr. Aiguader 88, Barcelona 08003, Spain; Neuroscience Research Program, IMIM-Hospital del Mar Research Institute, Barcelona, Spain
| | - Olga Valverde
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Dr. Aiguader 88, Barcelona 08003, Spain; Neuroscience Research Program, IMIM-Hospital del Mar Research Institute, Barcelona, Spain.
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8
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Miliano C, Marti M, Pintori N, Castelli MP, Tirri M, Arfè R, De Luca MA. Neurochemical and Behavioral Profiling in Male and Female Rats of the Psychedelic Agent 25I-NBOMe. Front Pharmacol 2019; 10:1406. [PMID: 31915427 PMCID: PMC6921684 DOI: 10.3389/fphar.2019.01406] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 11/05/2019] [Indexed: 11/13/2022] Open
Abstract
4-Iodo-2,5-dimethoxy-N-(2-methoxybenzyl)phenethylamine (25I-NBOMe), commonly called “N-Bomb,” is a synthetic phenethylamine with psychedelic and entactogenic effects; it was available on the Internet both as a legal alternative to lysergic acid diethylamide (LSD) and as a surrogate of 3,4-methylenedioxy-methamphetamine (MDMA), but now it has been scheduled among controlled substances. 25I-NBOMe acts as full agonist on serotonergic 5-HT2A receptors. Users are often unaware of ingesting fake LSD, and several cases of intoxication and fatalities have been reported. In humans, overdoses of “N-Bomb” can cause tachycardia, hypertension, seizures, and agitation. Preclinical studies have not yet widely investigated the rewarding properties and behavioral effects of this compound in both sexes. Therefore, by in vivo microdialysis, we evaluated the effects of 25I-NBOMe on dopaminergic (DA) and serotonergic (5-HT) transmissions in the nucleus accumbens (NAc) shell and core, and the medial prefrontal cortex (mPFC) of male and female rats. Moreover, we investigated the effect of 25I-NBOMe on sensorimotor modifications as well as body temperature, nociception, and startle/prepulse inhibition (PPI). We showed that administration of 25I-NBOMe affects DA transmission in the NAc shell in both sexes, although showing different patterns; moreover, this compound causes impaired visual responses in both sexes, whereas core temperature is heavily affected in females, and the highest dose tested exerts an analgesic effect prominent in male rats. Indeed, this drug is able to impair the startle amplitude with the same extent in both sexes and inhibits the PPI in male and female rats. Our study fills the gap of knowledge on the behavioral effects of 25I-NBOMe and the risks associated with its ingestion; it focuses the attention on sex differences that might be useful to understand the trend of consumption as well as to recognize and treat intoxication and overdose symptoms.
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Affiliation(s)
- Cristina Miliano
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Matteo Marti
- National Institute of Neuroscience (INN), Universirty of Cagliari, Cagliari, Italy.,Department of Morphology, Experimental Medicine and Surgery, Section of Legal Medicine and LTTA Centre, University of Ferrara, Ferrara, Italy.,Collaborative Center for the Italian National Early Warning System, Department of Anti-Drug Policies, Presidency of the Council of Ministers, Rome, Italy
| | - Nicholas Pintori
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Maria Paola Castelli
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy.,National Institute of Neuroscience (INN), Universirty of Cagliari, Cagliari, Italy
| | - Micaela Tirri
- Department of Morphology, Experimental Medicine and Surgery, Section of Legal Medicine and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Raffaella Arfè
- Department of Morphology, Experimental Medicine and Surgery, Section of Legal Medicine and LTTA Centre, University of Ferrara, Ferrara, Italy.,Institute of Public Health, Section of Legal Medicine, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Maria Antonietta De Luca
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy.,National Institute of Neuroscience (INN), Universirty of Cagliari, Cagliari, Italy
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Di Segni M, Andolina D, D'Addario SL, Babicola L, Ielpo D, Luchetti A, Pascucci T, Lo Iacono L, D'Amato FR, Ventura R. Sex-dependent effects of early unstable post-natal environment on response to positive and negative stimuli in adult mice. Neuroscience 2019; 413:1-10. [PMID: 31228589 DOI: 10.1016/j.neuroscience.2019.06.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 06/06/2019] [Accepted: 06/11/2019] [Indexed: 01/08/2023]
Abstract
Alterations in early environmental conditions that interfere with the creation of a stable mother-pup bond have been suggested to be a risk factor for the development of stress-related psychopathologies later in life. The long-lasting effects of early experiences are mediated by changes in various cerebral circuits, such as the corticolimbic system, which processes aversive and rewarding stimuli. However, it is evident that the early environment is not sufficient per se to induce psychiatric disorders; interindividual (eg, sex-based) differences in the response to environmental challenges exist. To examine the sex-related effects that are induced by an early experience on later events in adulthood, we determine the enduring effects of repeated cross-fostering (RCF) in female and male C57BL/6J mice. To this end, we assessed the behavioral phenotype of RCF and control (male and female) mice in the saccharine preference test and cocaine-induced conditioned place preference to evaluate the response to natural and pharmacological stimuli and in the elevated plus maze test and forced swimming test to measure their anxiety- and depression-like behavior. We also evaluated FST-induced c-Fos immunoreactivity in various brain regions that are engaged in the response to acute stress exposure (FST). Notably, RCF has opposing effects on the adult response to these tests between sexes, directing male mice toward an "anhedonia-like" phenotype and increasing the sensitivity for rewarding stimuli in female mice.
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Affiliation(s)
- Matteo Di Segni
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; IRCSS Fondazione Santa Lucia, 00142 Rome, Italy
| | - Diego Andolina
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; IRCSS Fondazione Santa Lucia, 00142 Rome, Italy
| | - Sebastian Luca D'Addario
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; Behavioral Neuroscience PhD Programme, Sapienza University, 00184, Rome, Italy
| | - Lucy Babicola
- Dept. of Applied and Biotechnological Clinical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Donald Ielpo
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; Behavioral Neuroscience PhD Programme, Sapienza University, 00184, Rome, Italy
| | - Alessandra Luchetti
- Cell Biology and Neurobiology Institute, National Research Council, 00143 Rome, Italy
| | - Tiziana Pascucci
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; IRCSS Fondazione Santa Lucia, 00142 Rome, Italy
| | - Luisa Lo Iacono
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; IRCSS Fondazione Santa Lucia, 00142 Rome, Italy
| | - Francesca R D'Amato
- Cell Biology and Neurobiology Institute, National Research Council, 00143 Rome, Italy; Institut Universitaire en Santé Mentale de Québec, Laval University, Quebec, Canada
| | - Rossella Ventura
- Dept. of Psychology and Center "Daniel Bovet", Sapienza University, 00184 Rome, Italy; IRCSS Fondazione Santa Lucia, 00142 Rome, Italy.
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