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Jian-Min C, Zhi-Yuan W, Ke L, Cheng Z, Shi-Xuan W, Yi-Wei C, Guan-Yi L, Rui S, Xiao-Mei Z, Jin L, Ning W. Assessment of lisdexamfetamine on executive function in rats: A translational cognitive research. Exp Neurol 2024; 374:114718. [PMID: 38336285 DOI: 10.1016/j.expneurol.2024.114718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/13/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Executive function, including working memory, attention and inhibitory control, is crucial for decision making, thinking and planning. Lisdexamfetamine, the prodrug of d-amphetamine, has been approved for treating attention-deficit hyperactivity disorder and binge eating disorder, but whether it improves executive function under non-disease condition, as well as the underlying pharmacokinetic and neurochemical properties, remains unclear. Here, using trial unique non-matching to location task and five-choice serial reaction time task of rats, we found lisdexamfetamine (p.o) enhanced spatial working memory and sustained attention under various cognitive load conditions, while d-amphetamine (i.p) only improved these cognitive performances under certain high cognitive load condition. Additionally, lisdexamfetamine evoked less impulsivity than d-amphetamine, indicating lower adverse effect on inhibitory control. In vivo pharmacokinetics showed lisdexamfetamine produced a relative stable and lasting release of amphetamine base both in plasma and in brain tissue, whereas d-amphetamine injection elicited rapid increase and dramatical decrease in amphetamine base levels. Microdialysis revealed lisdexamfetamine caused lasting release of dopamine within the medial prefrontal cortex (mPFC), whereas d-amphetamine produced rapid increase followed by decline to dopamine level. Moreover, lisdexamfetamine elicited more obvious efflux of noradrenaline than that of d-amphetamine. The distinct neurochemical profiles may be partly attributed to the different action of two drugs to membranous catecholamine transporters level within mPFC, detecting by Western Blotting. Taken together, due to its certain pharmacokinetic and catecholamine releasing profiles, lisdexamfetamine produced better pharmacological action to improving executive function. Our finding provided valuable evidence on the ideal pharmacokinetic and neurochemical characteristics of amphetamine-type psychostimulants in cognition enhancement.
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Affiliation(s)
- Chen Jian-Min
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China; Department of Pharmacy, Nanxishan Hospital of Guangxi Zhuang Autonomous Region, 46th Chongxin Road, Guilin 541000, China
| | - Wang Zhi-Yuan
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Liu Ke
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Zhang Cheng
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Wu Shi-Xuan
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Cao Yi-Wei
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Lu Guan-Yi
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Song Rui
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Zhuang Xiao-Mei
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China.
| | - Li Jin
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China
| | - Wu Ning
- Beijing Key Laboratory of Neuropsychopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing 100850, China.
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Liiver K, Imbeault S, Školnaja M, Kaart T, Kanarik M, Laugus K, De Wettinck J, Pulver A, Shimmo R, Harro J. Active vs passive novelty-related strategies: Sex differences in exploratory behaviour and monoaminergic systems. Behav Brain Res 2023; 441:114297. [PMID: 36641084 DOI: 10.1016/j.bbr.2023.114297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 01/02/2023] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
Sex differences are apparent in numerous behavioural characteristics. In order to compare and characterise male and female variability of exploratory behaviour, 365 male and 401 female rats were assessed in a task where a bimodal response distribution had previously been established in males. Female rats had significantly higher exploratory activity, and presented normal distribution of the behaviour, very differently from the bimodal distribution of males. No major effect of litter or oestrous cycle was detected. Several differences between male and female rats were found in monoamine metabolism measured ex vivo. Male rats had lower levels of dopamine (DA) in frontal cortex, and higher levels of 3,4-dihydroxyphenylacetic acid (DOPAC) in raphe area; higher levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) in dorsal striatum but lower levels of 5-HT and 5-HIAA in locus coeruleus area, 5-HIAA levels were also lower in hippocampus as compared to females. Males had higher noradrenaline (NA) levels in hippocampus and lower normetanephrine (NMN) levels in striatum, in both brain regions male animals had lower NMN/NA ratio. No sex difference was found in accumbens. The only brain region with an interaction between sex and the expression of exploratory activity was raphe: Here 5-HT levels were lower, and DOPAC levels and DOPAC/DA and 5-HIAA/5-HT ratios higher in low exploring male but not female rats. Conclusively, female rats not only display higher levels of exploration but the population distribution of this behaviour is distinct; this may be related to differences in the monoaminergic systems between female and male animals.
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Affiliation(s)
- Kristi Liiver
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia
| | - Sophie Imbeault
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia
| | - Marianna Školnaja
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia; Laboratory Animal Centre, Tallinn University of Technology, Akadeemia Road 15, 12618 Tallinn, Estonia
| | - Tanel Kaart
- Institute of Veterinary Medicine and Animal Science, Estonian University of Life Sciences, 51006 Tartu, Estonia
| | - Margus Kanarik
- Division of Neuropsychopharmacology, Institute of Chemistry, University of Tartu, Ravila 14A, 50411 Tartu, Estonia
| | - Karita Laugus
- Division of Neuropsychopharmacology, Institute of Chemistry, University of Tartu, Ravila 14A, 50411 Tartu, Estonia
| | - Jade De Wettinck
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia
| | - Aleksander Pulver
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia
| | - Ruth Shimmo
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia
| | - Jaanus Harro
- School of Natural Sciences and Health, Tallinn University, Narva Road 25, 10120 Tallinn, Estonia; Division of Neuropsychopharmacology, Institute of Chemistry, University of Tartu, Ravila 14A, 50411 Tartu, Estonia; Institute of Biotechnology, HiLIFE, University of Helsinki, Viikinkaari 5D, 00014 Helsinki, Finland.
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Effect of Neuropeptide S Administration on Ultrasonic Vocalizations and Behaviour in Rats with Low vs. High Exploratory Activity. Pharmaceuticals (Basel) 2021; 14:ph14060524. [PMID: 34070724 PMCID: PMC8229755 DOI: 10.3390/ph14060524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 12/20/2022] Open
Abstract
Neuropeptide S (NPS) is a peptide neurotransmitter that in animal studies promotes wakefulness and arousal with simultaneous anxiety reduction, in some inconsistency with results in humans. We examined the effect of NPS on rat ultrasonic vocalizations (USV) as an index of affective state and on behaviour in novel environments in rats with persistent inter-individual differences in exploratory activity. Adult male Wistar rats were categorised as of high (HE) or low (LE) exploratory activity and NPS was administered intracerebroventricularly (i.c.v.) at a dose of 1.0 nmol/5 µL, after which USVs were recorded in the home-cage and a novel standard housing cage, and behaviour evaluated in exploration/anxiety tests. NPS induced a massive production of long and short 22 kHz USVs in the home cage that continued later in the novel environment; no effect on 50 kHz USVs were found. In LE-rats, the long 22 kHz calls were emitted at lower frequencies and were louder. The effects of NPS on behaviour appeared novelty- and test-dependent. NPS had an anxiolytic-like effect in LE-rats only in the elevated zero-maze, whereas in HE-rats, locomotor activity in the zero-maze and in a novel standard cage was increased. Thus NPS appears as a psychostimulant peptide but with a complex effect on dimensions of affect.
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Extracellular Dopamine Levels in Nucleus Accumbens after Chronic Stress in Rats with Persistently High vs. Low 50-kHz Ultrasonic Vocalization Response. Brain Sci 2021; 11:brainsci11040470. [PMID: 33917789 PMCID: PMC8068186 DOI: 10.3390/brainsci11040470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/25/2021] [Accepted: 04/03/2021] [Indexed: 12/13/2022] Open
Abstract
Fifty-kHz ultrasonic vocalizations (USVs) in response to an imitation of rough-and-tumble play ('tickling') have been associated with positive affective states and rewarding experience in the rat. This USV response can be used as a measure of inter-individual differences in positive affect. We have previously shown that rats with persistently low positive affectivity are more vulnerable to the effects of chronic variable stress (CVS). To examine whether these differential responses are associated with dopaminergic neurotransmission in the nucleus accumbens (NAc), juvenile male Wistar rats were categorized as of high or low positive affectivity (HC and LC, respectively), and after reaching adulthood, extracellular dopamine (DA) levels in the NAc shell were measured using in vivo microdialysis after three weeks of CVS. Baseline levels of DA were compared as well as the response to K+-induced depolarization and the effect of glial glutamate transporter EAAT2 inhibition by 4 mM l-trans-pyrrolidine-2,4-dicarboxylate (PDC). DA baseline levels were higher in control LC-rats, and stress significantly lowered the DA content in LC-rats. An interaction of stress and affectivity appeared in response to depolarization where stress increased the DA output in HC-rats whereas it decreased it in LC-rats. These results show that NAc-shell DA is differentially regulated in response to stress in animals with high and low positive affect.
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Rajkumar AP, Qvist P, Donskov JG, Lazarus R, Pallesen J, Nava N, Winther G, Liebenberg N, Cour SHL, Paternoster V, Fryland T, Palmfeldt J, Fejgin K, Mørk A, Nyegaard M, Pakkenberg B, Didriksen M, Nyengaard JR, Wegener G, Mors O, Christensen JH, Børglum AD. Reduced Brd1 expression leads to reversible depression-like behaviors and gene-expression changes in female mice. Transl Psychiatry 2020; 10:239. [PMID: 32681022 PMCID: PMC7367888 DOI: 10.1038/s41398-020-00914-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/20/2020] [Accepted: 06/30/2020] [Indexed: 12/30/2022] Open
Abstract
The schizophrenia-associated gene, BRD1, encodes an epigenetic regulator in which chromatin interactome is enriched with genes implicated in mental health. Alterations in histone modifications and epigenetic regulation contribute to brain transcriptomic changes in affective disorders and preclinical data supports a role for BRD1 in psychopathology. However, the implication of BRD1 on affective pathology remains poorly understood. In this study, we assess affective behaviors and associated neurobiology in Brd1+/- mice along with their responses to Fluoxetine and Imipramine. This involves behavioral, neurostructural, and neurochemical characterizations along with regional cerebral gene expression profiling combined with integrative functional genomic analyses. We report behavioral changes in female Brd1+/- mice with translational value to depressive symptomatology that can be alleviated by the administration of antidepressant medications. Behavioral changes are accompanied by altered brain morphometry and imbalances in monoaminergic systems. In accordance, gene expression changes across brain tissues reveal altered neurotransmitter signaling and cluster in functional pathways associated with depression including 'Adrenergic-, GPCR-, cAMP-, and CREB/CREM-signaling'. Integrative gene expression analysis specifically links changes in amygdaloid intracellular signaling activity to the behavioral treatment response in Brd1+/- mice. Collectively, our study highlights the importance of BRD1 as a modulator of affective pathology and adds to our understanding of the molecular mechanisms underlying affective disorders and their treatment response.
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Affiliation(s)
- Anto P. Rajkumar
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark ,grid.4563.40000 0004 1936 8868Division of Psychiatry and Applied Psychology, University of Nottingham, Nottingham, UK ,grid.13097.3c0000 0001 2322 6764Department of Old Age Psychiatry, Institute of Psychiatry, Psychology, & Neuroscience, King’s College London, London, UK
| | - Per Qvist
- IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark. .,Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark. .,Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark. .,Synaptic Transmission, H. Lundbeck A/S, Copenhagen, Denmark.
| | - Julie G. Donskov
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Ross Lazarus
- grid.1051.50000 0000 9760 5620Computational Biology, Baker IDI Heart and Diabetes institute, Melbourne, VIC Australia
| | - Jonatan Pallesen
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Nicoletta Nava
- grid.154185.c0000 0004 0512 597XTranslational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Core Centre for Molecular Morphology, Section for Stereology and Microscopy, Department of Clinical Medicine, Centre for Stochastic Geometry and Advanced Bioimaging, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Gudrun Winther
- grid.154185.c0000 0004 0512 597XTranslational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Nico Liebenberg
- grid.154185.c0000 0004 0512 597XTranslational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Sanne H. la Cour
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Veerle Paternoster
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Tue Fryland
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Johan Palmfeldt
- grid.154185.c0000 0004 0512 597XResearch Unit for Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Kim Fejgin
- grid.424580.f0000 0004 0476 7612Synaptic Transmission, H. Lundbeck A/S, Copenhagen, Denmark
| | - Arne Mørk
- grid.424580.f0000 0004 0476 7612Synaptic Transmission, H. Lundbeck A/S, Copenhagen, Denmark
| | - Mette Nyegaard
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Bente Pakkenberg
- grid.411702.10000 0000 9350 8874Research Laboratory for Stereology and Neuroscience, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Michael Didriksen
- grid.424580.f0000 0004 0476 7612Synaptic Transmission, H. Lundbeck A/S, Copenhagen, Denmark
| | - Jens R. Nyengaard
- grid.7048.b0000 0001 1956 2722Core Centre for Molecular Morphology, Section for Stereology and Microscopy, Department of Clinical Medicine, Centre for Stochastic Geometry and Advanced Bioimaging, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Gregers Wegener
- grid.154185.c0000 0004 0512 597XTranslational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Ole Mors
- grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark ,grid.154185.c0000 0004 0512 597XPsychosis Research Unit, Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Jane H. Christensen
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
| | - Anders D. Børglum
- grid.452548.a0000 0000 9817 5300IPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Department of Biomedicine and Centre for Integrative Sequencing, iSEQ, Aarhus University, Aarhus, Denmark ,grid.7048.b0000 0001 1956 2722Center for Genomics and Personalized Medicine, Aarhus University, Aarhus, Denmark
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Kõiv K, Vares M, Kroon C, Metelitsa M, Tiitsaar K, Laugus K, Jaako K, Harro J. Effect of chronic variable stress on sensitization to amphetamine in high and low sucrose-consuming rats. J Psychopharmacol 2019; 33:1512-1523. [PMID: 31208275 DOI: 10.1177/0269881119856000] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Individual vulnerability to stress manifests in the interaction of innate properties and environment. There is a growing interest in the individual variability in vulnerability to stress and how it contributes to the development of psychiatric disorders. Intake of palatable substances is often measured in animal models. We have previously demonstrated that the consumption of sucrose solution is a stable trait in rats. AIMS The present study aimed to compare the sensitivity of rats with high vs low liquid sucrose consumption to chronic variable stress and the stress effect on behavioural sensitization to amphetamine. METHODS Male Wistar rats were subjected to a chronic stress regimen and subsequent repeated treatment with amphetamine (1 mg/kg, intraperitoneally). Fifty-kHz ultrasonic vocalizations, locomotor activity and stereotypies were measured. RESULTS In no-stress baseline conditions, the behavioural response to acute amphetamine was similar in rats with high vs low sucrose consumption. Prior chronic stress potentiated the effect of amphetamine only in rats with high sucrose consumption. Behavioural sensitization to repeated administration of amphetamine was observed in non-stressed rats with lower sucrose preference, but not in the respective stressed group that had increased monoamine turnover in the nucleus accumbens. In contrast, in rats with high sucrose preference the amphetamine sensitization effect was prevalent in stressed rats, but not in non-stressed animals. INTERPRETATION Chronic stress can change the psychostimulant effect but this depends on the inherent reward sensitivity of the animal. Trait-wise, sucrose intake reflects vulnerability to chronic stress and may interact with the development of addiction.
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Affiliation(s)
- Kadri Kõiv
- Department of Psychology, University of Tartu, Tartu, Estonia
| | - Marten Vares
- Department of Psychology, University of Tartu, Tartu, Estonia
| | - Cristina Kroon
- Department of Psychology, University of Tartu, Tartu, Estonia
| | - Mait Metelitsa
- Department of Psychology, University of Tartu, Tartu, Estonia
| | - Kai Tiitsaar
- Department of Psychology, University of Tartu, Tartu, Estonia
| | - Karita Laugus
- Department of Psychology, University of Tartu, Tartu, Estonia
| | - Külli Jaako
- Department of Pharmacology, University of Tartu, Tartu, Estonia
| | - Jaanus Harro
- Department of Psychology, University of Tartu, Tartu, Estonia
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Li Y, Zu Y, Li X, Zhao S, Ou F, Li L, Zhang X, Wang W, He T, Liang Y, Sun X, Tang M. Acute corticosterone treatment elicits antidepressant-like actions on the hippocampal 5-HT and the immobility phenotype. Brain Res 2019; 1714:166-173. [DOI: 10.1016/j.brainres.2019.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/09/2019] [Accepted: 02/18/2019] [Indexed: 10/27/2022]
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Visco DB, Manhães-de-Castro R, Chaves WF, Lacerda DC, Pereira SDC, Ferraz-Pereira KN, Toscano AE. Selective serotonin reuptake inhibitors affect structure, function and metabolism of skeletal muscle: A systematic review. Pharmacol Res 2018; 136:194-204. [DOI: 10.1016/j.phrs.2018.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/01/2018] [Accepted: 09/04/2018] [Indexed: 12/14/2022]
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Sedaghat K, Yousefian Z, Vafaei AA, Rashidy-Pour A, Parsaei H, Khaleghian A, Choobdar S. Mesolimbic dopamine system and its modulation by vitamin D in a chronic mild stress model of depression in the rat. Behav Brain Res 2018; 356:156-169. [PMID: 30144460 DOI: 10.1016/j.bbr.2018.08.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 08/07/2018] [Accepted: 08/21/2018] [Indexed: 12/27/2022]
Abstract
Depression, a common mood disorder, involves anhedonia and defects in reward circuits and mesolimbic dopamine transmission in the striatum and nucleus accumbens (NAc). Active vitamin-D, (1,25-(OH)2 vitamin-D3), exerts protective and regulatory effects on the brain dopamine system. In this study, key depression-like symptoms were induced in rats by chronic mild-stress (CMS) and the comparative effect of treatment with 1,25-(OH)2 vitamin-D3 (5, 10 μg/kg, or vehicle; i.p., twice weekly) or fluoxetine (5 mg/kg or vehicle, i.p., daily) on anhedonic behavior, locomotor activity and anxiety-like behavior was examined using sucrose preference test (SPT), open field test (OFT) and novel object exploration test (NOT), respectively. We also measured serum corticosterone levels and dopamine transporter-immunoreactivity (DAT-ir) levels in NAc shell and core. CMS exposure for 3 weeks was followed by a SPT and thereafter CMS was continued for 5 weeks, along with vitamin-D or fluoxetine treatment and further testing, which was concluded with another SPT. Vitamin-D treatment enhanced sucrose preference (P < 0.01; an hedonic effect) and increased object exploration (P < 0.01) in CMS rats. CMS significantly reduced the level of DAT-ir in NAc (P < 0.0001). Vitamin-D treatment restored/increased DAT-ir levels (P < 0.0001) in CMS rat NAc (core/ shell), compared to levels in fluoxetine treated and non-treated CMS rats. Vitamin-D did not alter locomotor activity or produce an anxiolytic effect in the OFT. These data suggest that similar to the antidepressant, fluoxetine, regular vitamin-D treatment can improve 'anhedonia-like symptoms' in rats subjected to CMS, probably by regulating the effect of dopamine-related actions in the NAc.
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Affiliation(s)
- Katayoun Sedaghat
- Research Centre of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
| | - Zahra Yousefian
- Research Centre of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Vafaei
- Research Centre of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Rashidy-Pour
- Research Centre of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Houman Parsaei
- Department of Anatomy, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Khaleghian
- Department of Biochemistry, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Sara Choobdar
- Research Centre of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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