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Demailly A, Moreau C, Devos D. Effectiveness of Continuous Dopaminergic Therapies in Parkinson's Disease: A Review of L-DOPA Pharmacokinetics/Pharmacodynamics. JOURNAL OF PARKINSON'S DISEASE 2024:JPD230372. [PMID: 38848195 DOI: 10.3233/jpd-230372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
Background Parkinson's disease (PD) is characterized by striatal dopamine deficiency. Since dopamine cannot cross the digestive and blood-brain barriers, its precursor, levodopa (L-DOPA), remains the mainstay of treatment. However, the significant pharmacokinetic (Pk) and pharmacodynamic (Pd) limitations of L-DOPA, combined with the severity of PD, may trigger motor and non-motor complications, for which continuous dopaminergic delivery therapies have been developed. Objective The aim of this study was to review the literature on the Pk/Pd limitations of L-DOPA and how current treatments of continuous dopaminergic administration ameliorate these problems, in order to identify the need for new therapeutic avenues. Methods A comprehensive literature search was carried out using PubMed and 75 articles were initially extracted. Following independent screening by two reviewers and consideration of eligibility, 10 articles were chosen for further analysis. Information concerning the Pk/Pd of L-DOPA was classified for each article. Results Pk/Pd problems notably include: (i) restricted digestive and cerebral absorption; (ii) unnecessary peripheral distribution; (iii) short half-life; (iv) age- and PD-induced decline of central aromatic L-amino acid decarboxylase; (v) misdistribution in many cells; and (vii) pulsatile stimulation of dopaminergic receptors. Current treatments only slightly ameliorate some of these problems. Conclusions Many Pk/Pd constraints are not resolved by existing continuous dopaminergic delivery therapies. This highlights the significant gap between these treatments and the ideal of continuous dopaminergic stimulation.
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Affiliation(s)
| | - Caroline Moreau
- Université Lille, Lille, France
- Neurology Department & Parkinson's Disease Centre of Excellence, INSERM, CHU Lille, U1172 - Degenerative & Vascular Cognitive Disorders, LilNCog, Lille Neuroscience & Cognition, LICEND, NS-Park Network, Lille, France
| | - David Devos
- Université Lille, Lille, France
- Neurology Department & Parkinson's Disease Centre of Excellence, INSERM, CHU Lille, U1172 - Degenerative & Vascular Cognitive Disorders, LilNCog, Lille Neuroscience & Cognition, LICEND, NS-Park Network, Lille, France
- Medical Pharmacology Department, CHU Lille, Lille, France
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Bezerra TO, Roque AC, Salum C. A Computational Model for the Simulation of Prepulse Inhibition and Its Modulation by Cortical and Subcortical Units. Brain Sci 2024; 14:502. [PMID: 38790479 PMCID: PMC11118907 DOI: 10.3390/brainsci14050502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024] Open
Abstract
The sensorimotor gating is a nervous system function that modulates the acoustic startle response (ASR). Prepulse inhibition (PPI) phenomenon is an operational measure of sensorimotor gating, defined as the reduction of ASR when a high intensity sound (pulse) is preceded in milliseconds by a weaker stimulus (prepulse). Brainstem nuclei are associated with the mediation of ASR and PPI, whereas cortical and subcortical regions are associated with their modulation. However, it is still unclear how the modulatory units can influence PPI. In the present work, we developed a computational model of a neural circuit involved in the mediation (brainstem units) and modulation (cortical and subcortical units) of ASR and PPI. The activities of all units were modeled by the leaky-integrator formalism for neural population. The model reproduces basic features of PPI observed in experiments, such as the effects of changes in interstimulus interval, prepulse intensity, and habituation of ASR. The simulation of GABAergic and dopaminergic drugs impaired PPI by their effects over subcortical units activity. The results show that subcortical units constitute a central hub for PPI modulation. The presented computational model offers a valuable tool to investigate the neurobiology associated with disorder-related impairments in PPI.
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Affiliation(s)
- Thiago Ohno Bezerra
- Center of Mathematics, Computation and Cognition, Universidade Federal do ABC, São Bernardo do Campo 09606-045, Brazil
| | - Antonio C. Roque
- Department of Physics, School of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
| | - Cristiane Salum
- Center of Mathematics, Computation and Cognition, Universidade Federal do ABC, São Bernardo do Campo 09606-045, Brazil
- Interdisciplinary Applied Neuroscience Unit, Universidade Federal do ABC, São Bernardo do Campo 09606-045, Brazil
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3
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Onofrychuk TJ, Heidt AL, Orvold SN, Greba Q, Howland JG. Nucleus accumbens core dopamine D2 receptors are required for performance of the odor span task in male rats. Psychopharmacology (Berl) 2024; 241:963-974. [PMID: 38183429 DOI: 10.1007/s00213-023-06522-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 12/19/2023] [Indexed: 01/08/2024]
Abstract
RATIONALE The nucleus accumbens (NAc) core gates motivationally relevant behavioral action sequences through afferents from cortical and subcortical brain regions. While the role of the NAc core in reward and effort-based decision making is well established, its role in working memory (WM) processes is incompletely understood. The odor span task (OST) has been proposed as a measure of non-spatial working memory capacity (WMC) as it requires rodents to select a novel odor from an increasing number of familiar odors to obtain a food reward. OBJECTIVE To assess the role of the NAc core in the OST using (1) reversible chemical inactivation and (2) selective blockade of dopamine D1 and D2 receptors in the area. METHODS Well-trained male rats were tested on the OST following intra-NAc core infusions of muscimol/baclofen, the D1 receptor antagonist SCH-23390 (1 μg/hemisphere) and the D2 receptor antagonist eticlopride (1 μg/hemisphere). Behavioral measurements included the average odor span, maximum odor span, choice latency, searching vigor, and patterns of responding during foraging that may relate to impulsivity. RESULTS Chemical inactivation of the NAc core significantly decreased odor span relative to sham and vehicle conditions. Selective antagonism of D2, but not D1, receptors in the NAc core also produced deficits in odor span. We found that secondary behavioral measures of choice latency, searching vigor, and responding to the first odor stimulus encountered were largely unaffected by treatment. CONCLUSIONS These findings suggest that D2 receptors in the NAc core are required for OST performance.
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Affiliation(s)
- Timothy J Onofrychuk
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ashton L Heidt
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Spencer N Orvold
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Quentin Greba
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - John G Howland
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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4
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Chan SY, Low XZ, Ngoh ZM, Ong ZY, Kee MZL, Huang P, Kumar S, Rifkin-Graboi A, Chong YS, Chen H, Tan KH, Chan JKY, Fortier MV, Gluckman PD, Zhou JH, Meaney MJ, Tan AP. Neonatal Nucleus Accumbens Microstructure Modulates Individual Susceptibility to Preconception Maternal Stress in Relation to Externalizing Behaviors. J Am Acad Child Adolesc Psychiatry 2024:S0890-8567(24)00071-6. [PMID: 38423282 DOI: 10.1016/j.jaac.2023.12.011] [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: 03/16/2023] [Revised: 11/20/2023] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
OBJECTIVE Maternal stress influences in utero brain development and is a modifiable risk factor for offspring psychopathologies. Reward circuitry dysfunction underlies various internalizing and externalizing psychopathologies. This study examined (1) the association between maternal stress and microstructural characteristics of the neonatal nucleus accumbens (NAcc), a major node of the reward circuitry, and (2) whether neonatal NAcc microstructure modulates individual susceptibility to maternal stress in relation to childhood behavioral problems. METHOD K-means longitudinal cluster analysis was performed to determine trajectories of maternal stress measures (Perceived Stress Scale [PSS], hair cortisol) from preconception to the third trimester. Neonatal NAcc microstructural measures (orientation density index [ODI] and intracellular volume fraction [ICVF]) were compared across trajectories. We then examined the interaction between maternal stress and neonatal NAcc microstructure on child internalizing and externalizing behaviors, assessed between ages 3 and 4 years. RESULTS Two trajectories of maternal stress magnitude ("low"/"high") were identified for both PSS (n = 287) and hair cortisol (n = 336). Right neonatal NAcc ODI (rNAcc-ODI) was significantly lower in "low" relative to "high" PSS trajectories (n = 77, p = .04). PSS at preconception had the strongest association with rNAcc-ODI (r = 0.293, p = .029). No differences in NAcc microstructure were found between hair cortisol trajectories. A significant interaction between preconception PSS and rNAcc-ODI on externalizing behavior was observed (n = 47, p = .047). CONCLUSION Our study showed that the preconception period contributes to in utero NAcc development, and that NAcc microstructure modulates individual susceptibility to preconception maternal stress in relation to externalizing problems.
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Affiliation(s)
- Shi Yu Chan
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | - Xi Zhen Low
- National University Health System, Singapore, Singapore
| | - Zhen Ming Ngoh
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | - Zi Yan Ong
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | - Michelle Z L Kee
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | - Pei Huang
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | | | - Anne Rifkin-Graboi
- National Institute of Education, Nanyang Technological University, Singapore, Singapore
| | - Yap-Seng Chong
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore; National University Health System, Singapore, Singapore; National University of Singapore, Singapore, Singapore
| | - Helen Chen
- KK Women's and Children's Hospital, Duke-National University of Singapore, Singapore, Singapore
| | - Kok Hian Tan
- KK Women's and Children's Hospital, Duke-National University of Singapore, Singapore, Singapore
| | - Jerry K Y Chan
- KK Women's and Children's Hospital, Duke-National University of Singapore, Singapore, Singapore
| | - Marielle V Fortier
- KK Women's and Children's Hospital, Duke-National University of Singapore, Singapore, Singapore
| | - Peter D Gluckman
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | | | - Michael J Meaney
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore; National University of Singapore, Singapore, Singapore; Douglas Mental Health University Institute, McGill University, Montreal, Canada
| | - Ai Peng Tan
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore; National University Health System, Singapore, Singapore; National University of Singapore, Singapore, Singapore.
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5
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Dazzi L, Sanna F, Talani G, Bassareo V, Biggio F, Follesa P, Pisu MG, Porcu P, Puliga R, Quartu M, Serra M, Serra MP, Sanna E, Acquas E. Binge-like administration of alcohol mixed to energy drinks to male adolescent rats severely impacts on mesocortical dopaminergic function in adulthood: A behavioral, neurochemical and electrophysiological study. Neuropharmacology 2024; 243:109786. [PMID: 37952712 DOI: 10.1016/j.neuropharm.2023.109786] [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: 06/28/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/14/2023]
Abstract
A growing body of evidence indicates that the practice of consuming alcohol mixed with energy drinks (ED) (AMED) in a binge drinking pattern is significantly diffusing among the adolescent population. This behavior, aimed at increasing the intake of alcohol, raises serious concerns about its long-term effects. Epidemiological studies suggest that AMED consumption might increase vulnerability to alcohol abuse and have a gating effect on the use of illicit drugs. The medial prefrontal cortex (mPFC) is involved in the modulation of the reinforcing effects of alcohol and of impulsive behavior and plays a key role in the development of addiction. In our study, we used a binge-like protocol of administration of alcohol, ED, or AMED in male adolescent rats, to mimic the binge-like intake behavior observed in humans, in order to evaluate whether these treatments could differentially affect the function of mesocortical dopaminergic neurons in adulthood. We did so by measuring: i) physiological sensorimotor gating; ii) voluntary alcohol consumption and dopamine transmission before, during, and after presentation of alcohol; iii) electrophysiological activity of VTA dopaminergic neurons and their sensitivity to a challenge with alcohol. Our results indicate that exposure to alcohol, ED, or AMED during adolescence induces differential adaptive changes in the function of mesocortical dopaminergic neurons and, in particular, that AMED exposure decreases their sensitivity to external stimuli, possibly laying the foundation for the altered behaviors observed in adulthood.
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Affiliation(s)
- Laura Dazzi
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Fabrizio Sanna
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Giuseppe Talani
- Institute of Neuroscience - National Research Council (C.N.R.) of Italy, Cagliari, Italy
| | - Valentina Bassareo
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Francesca Biggio
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Paolo Follesa
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Maria Giuseppina Pisu
- Institute of Neuroscience - National Research Council (C.N.R.) of Italy, Cagliari, Italy
| | - Patrizia Porcu
- Institute of Neuroscience - National Research Council (C.N.R.) of Italy, Cagliari, Italy
| | - Roberta Puliga
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Marina Quartu
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Mariangela Serra
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Maria Pina Serra
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
| | - Enrico Sanna
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy; Institute of Neuroscience - National Research Council (C.N.R.) of Italy, Cagliari, Italy.
| | - Elio Acquas
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, SS 554 - bivio per Sestu, 09042, Monserrato, Cagliari, Italy
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Paola Caminiti S, Gallo S, Menegon F, Naldi A, Comi C, Tondo G. Lifestyle Modulators of Neuroplasticity in Parkinson's Disease: Evidence in Human Neuroimaging Studies. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2024; 23:602-613. [PMID: 37326116 DOI: 10.2174/1871527322666230616121213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/25/2023] [Accepted: 05/17/2023] [Indexed: 06/17/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by both motor and non-motor symptoms. A progressive neuronal loss and the consequent clinical impairment lead to deleterious effects on daily living and quality of life. Despite effective symptomatic therapeutic approaches, no disease-modifying therapies are currently available. Emerging evidence suggests that adopting a healthy lifestyle can improve the quality of life of PD patients. In addition, modulating lifestyle factors can positively affect the microstructural and macrostructural brain levels, corresponding to clinical improvement. Neuroimaging studies may help to identify the mechanisms through which physical exercise, dietary changes, cognitive enrichment, and exposure to substances modulate neuroprotection. All these factors have been associated with a modified risk of developing PD, with attenuation or exacerbation of motor and non-motor symptomatology, and possibly with structural and molecular changes. In the present work, we review the current knowledge on how lifestyle factors influence PD development and progression and the neuroimaging evidence for the brain structural, functional, and molecular changes induced by the adoption of positive or negative lifestyle behaviours.
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Affiliation(s)
| | - Silvia Gallo
- Neurology Unit, Department of Translational Medicine, Movement Disorders Centre, University of Piemonte Orientale, 28100 Novara, Italy
| | - Federico Menegon
- Neurology Unit, Department of Translational Medicine, Movement Disorders Centre, University of Piemonte Orientale, 28100 Novara, Italy
| | - Andrea Naldi
- Neurology Unit, San Giovanni Bosco Hospital, 10154 Turin, Italy
| | - Cristoforo Comi
- Neurology Unit, Department of Translational Medicine, S. Andrea Hospital, University of Piemonte Orientale, 13100 Vercelli, Italy
| | - Giacomo Tondo
- Neurology Unit, Department of Translational Medicine, S. Andrea Hospital, University of Piemonte Orientale, 13100 Vercelli, Italy
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7
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Stark AJ, Song AK, Petersen KJ, Hay KR, Lin YC, Trujillo P, Kang H, Collazzo JM, Donahue MJ, Zald DH, Claassen DO. Accentuated Paralimbic and Reduced Mesolimbic D 2/3-Impulsivity Associations in Parkinson's Disease. J Neurosci 2023; 43:8733-8743. [PMID: 37852792 PMCID: PMC10727183 DOI: 10.1523/jneurosci.1037-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/31/2023] [Accepted: 10/10/2023] [Indexed: 10/20/2023] Open
Abstract
Impulsivity is a behavioral trait that is elevated in many neuropsychiatric disorders. Parkinson's disease (PD) patients can exhibit a specific pattern of reward-seeking impulsive-compulsive behaviors (ICBs), as well as more subtle changes to generalized trait impulsivity. Prior studies in healthy controls (HCs) suggest that trait impulsivity is regulated by D2/3 autoreceptors in mesocorticolimbic circuits. While altered D2/3 binding is noted in ICB+ PD patients, there is limited prior assessment of the trait impulsivity-D2/3 relationship in PD, and no prior direct comparison with patterns in HCs. We examined 54 PD (36 M; 18 F) and 31 sex- and age-matched HC (21 M; 10 F) subjects using [18F]fallypride, a high-affinity D2/3 receptor ligand, to measure striatal and extrastriatal D2/3 nondisplaceable binding potential (BPND). Subcortical and cortical assessment exclusively used ROI or exploratory-voxelwise methods, respectively. All completed the Barratt Impulsiveness Scale, a measure of trait impulsivity. Subcortical ROI analyses indicated a negative relationship between trait impulsivity and D2/3 BPND in the ventral striatum and amygdala of HCs but not in PD. By contrast, voxelwise methods demonstrated a positive trait impulsivity-D2/3 BPND correlation in ventral frontal olfactocentric-paralimbic cortex of subjects with PD but not HCs. Subscale analysis also highlighted different aspects of impulsivity, with significant interactions between group and motor impulsivity in the ventral striatum, and attentional impulsivity in the amygdala and frontal paralimbic cortex. These results suggest that dopamine functioning in distinct regions of the mesocorticolimbic circuit influence aspects of impulsivity, with the relative importance of regional dopamine functions shifting in the neuropharmacological context of PD.SIGNIFICANCE STATEMENT The biological determinants of impulsivity have broad clinical relevance, from addiction to neurodegenerative disorders. Here, we address biomolecular distinctions in Parkinson's disease. This is the first study to evaluate a large cohort of Parkinson's disease patients and age-matched healthy controls with a measure of trait impulsivity and concurrent [18F]fallypride PET, a method that allows quantification of D2/3 receptors throughout the mesocorticolimbic network. We demonstrate widespread differences in the trait impulsivity-dopamine relationship, including (1) loss of subcortical relationships present in the healthy brain and (2) emergence of a new relationship in a limbic cortical area. This illustrates the loss of mechanisms of behavioral regulation present in the healthy brain while suggesting a potential compensatory response and target for future investigation.
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Affiliation(s)
- Adam J Stark
- School of Medicine, Vanderbilt University, Nashville, Tennessee 37232
| | - Alexander K Song
- Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Kalen J Petersen
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63310
| | - Kaitlyn R Hay
- Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Ya-Chen Lin
- Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee 37232
- Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Paula Trujillo
- Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Hakmook Kang
- Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee 37232
- Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Jenna M Collazzo
- School of Medicine, Temple University, Philadelphia, Pennsylvania 19140
| | - Manus J Donahue
- Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - David H Zald
- Department of Psychiatry, Rutgers University, Piscataway, New Jersey 08901
| | - Daniel O Claassen
- Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
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Johnson CS, Chapp AD, Lind EB, Thomas MJ, Mermelstein PG. Sex differences in mouse infralimbic cortex projections to the nucleus accumbens shell. Biol Sex Differ 2023; 14:87. [PMID: 38082417 PMCID: PMC10712109 DOI: 10.1186/s13293-023-00570-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/16/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND The nucleus accumbens (NAc) is an important region in motivation and reward. Glutamatergic inputs from the infralimbic cortex (ILC) to the shell region of the NAc (NAcSh) have been implicated in driving the motivation to seek reward through repeated action-based behavior. While this has primarily been studied in males, observed sex differences in motivational circuitry and behavior suggest that females may be more sensitive to rewarding stimuli. These differences have been implicated for the observed vulnerability in women to substance use disorders. METHODS We used an optogenetic self-stimulation task in addition to ex vivo electrophysiological recordings of NAcSh neurons in mouse brain slices to investigate potential sex differences in ILC-NAcSh circuitry in reward-seeking behavior. Glutamatergic neurons in the ILC were infected with an AAV delivering DNA encoding for channelrhodopsin. Entering the designated active corner of an open field arena resulted in photostimulation of the ILC terminals in the NAcSh. Self-stimulation occurred during two consecutive days of testing over three consecutive weeks: first for 10 Hz, then 20 Hz, then 30 Hz. Whole-cell recordings of medium spiny neurons in the NAcSh assessed both optogenetically evoked local field potentials and intrinsic excitability. RESULTS Although both sexes learned to seek the active zone, within the first day, females entered the zone more than males, resulting in a greater amount of photostimulation. Increasing the frequency of optogenetic stimulation amplified female reward-seeking behavior. Males were less sensitive to ILC stimulation, with higher frequencies and repeated days required to increase male reward-seeking behavior. Unexpectedly, ex vivo optogenetic local field potentials in the NAcSh were greater in slices from male animals. In contrast, female medium-spiny neurons (MSNs) displayed significantly greater intrinsic neuronal excitability. CONCLUSIONS Taken together, these data indicate that there are sex differences in the motivated behavior driven by glutamate within the ILC-NAcSh circuit. Though glutamatergic signaling was greater in males, heightened intrinsic excitability in females appears to drive this sex difference.
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Affiliation(s)
- Caroline S Johnson
- Department of Neuroscience, School of Medicine, University of Minnesota, 4-140 Jackson Hall, 321 Church St SE, Minneapolis, MN, 55455, USA
| | - Andrew D Chapp
- Department of Neuroscience, School of Medicine, University of Minnesota, 4-140 Jackson Hall, 321 Church St SE, Minneapolis, MN, 55455, USA
- Medical Discovery Team on Addiction, University of Minnesota, 3-432 McGuire Translational Research Facility, 2001 6th St SE, Minneapolis, MN, 55455, USA
| | - Erin B Lind
- Department of Neuroscience, School of Medicine, University of Minnesota, 4-140 Jackson Hall, 321 Church St SE, Minneapolis, MN, 55455, USA
- Medical Discovery Team on Addiction, University of Minnesota, 3-432 McGuire Translational Research Facility, 2001 6th St SE, Minneapolis, MN, 55455, USA
| | - Mark J Thomas
- Department of Neuroscience, School of Medicine, University of Minnesota, 4-140 Jackson Hall, 321 Church St SE, Minneapolis, MN, 55455, USA
- Medical Discovery Team on Addiction, University of Minnesota, 3-432 McGuire Translational Research Facility, 2001 6th St SE, Minneapolis, MN, 55455, USA
| | - Paul G Mermelstein
- Department of Neuroscience, School of Medicine, University of Minnesota, 4-140 Jackson Hall, 321 Church St SE, Minneapolis, MN, 55455, USA.
- Medical Discovery Team on Addiction, University of Minnesota, 3-432 McGuire Translational Research Facility, 2001 6th St SE, Minneapolis, MN, 55455, USA.
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9
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Kiani MM, Heidari Beni MH, Aghajan H. Aberrations in temporal dynamics of cognitive processing induced by Parkinson's disease and Levodopa. Sci Rep 2023; 13:20195. [PMID: 37980451 PMCID: PMC10657430 DOI: 10.1038/s41598-023-47410-3] [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: 06/15/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023] Open
Abstract
The motor symptoms of Parkinson's disease (PD) have been shown to significantly improve by Levodopa. However, despite the widespread adoption of Levodopa as a standard pharmaceutical drug for the treatment of PD, cognitive impairments linked to PD do not show visible improvement with Levodopa treatment. Furthermore, the neuronal and network mechanisms behind the PD-induced cognitive impairments are not clearly understood. In this work, we aim to explain these cognitive impairments, as well as the ones exacerbated by Levodopa, through examining the differential dynamic patterns of the phase-amplitude coupling (PAC) during cognitive functions. EEG data recorded in an auditory oddball task performed by a cohort consisting of controls and a group of PD patients during both on and off periods of Levodopa treatment were analyzed to derive the temporal dynamics of the PAC across the brain. We observed distinguishing patterns in the PAC dynamics, as an indicator of information binding, which can explain the slower cognitive processing associated with PD in the form of a latency in the PAC peak time. Thus, considering the high-level connections between the hippocampus, the posterior and prefrontal cortices established through the dorsal and ventral striatum acting as a modulatory system, we posit that the primary issue with cognitive impairments of PD, as well as Levodopa's cognitive deficit side effects, can be attributed to the changes in temporal dynamics of dopamine release influencing the modulatory function of the striatum.
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Affiliation(s)
- Mohammad Mahdi Kiani
- Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
| | | | - Hamid Aghajan
- Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran.
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10
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Darcey VL, Guo J, Chi M, Chung ST, Courville AB, Gallagher I, Herscovitch P, Howard R, LaNoire M, Milley L, Schick A, Stagliano M, Turner S, Urbanski N, Yang S, Yim E, Zhai N, Zhou MS, Hall KD. Striatal dopamine tone is positively associated with body mass index in humans as determined by PET using dual dopamine type-2 receptor antagonist tracers. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.09.27.23296169. [PMID: 37886556 PMCID: PMC10602123 DOI: 10.1101/2023.09.27.23296169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
The relationship between adiposity and dopamine type-2 receptor binding potential (D2BP) in the human brain has been repeatedly studied for >20 years with highly discrepant results, likely due to variable methodologies and differing study populations. We conducted a controlled inpatient feeding study to measure D2BP in the striatum using positron emission tomography with both [18F]fallypride and [11C]raclopride in pseudo-random order in 54 young adults with a wide range of body mass index (BMI 20-44 kg/m2). Within-subject D2BP measurements using the two tracers were moderately correlated (r=0.47, p<0.001). D2BP was negatively correlated with BMI as measured by [11C]raclopride (r= -0.51; p<0.0001) but not [18F]fallypride (r=-0.01; p=0.92) and these correlation coefficients were significantly different from each other (p<0.001). Given that [18F]fallypride has greater binding affinity to dopamine type-2 receptors than [11C]raclopride, which is more easily displaced by endogenous dopamine, our results suggest that adiposity is positively associated with increased striatal dopamine tone.
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Affiliation(s)
- Valerie L Darcey
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
- Center on Compulsive Behaviors, Intramural Research Program, NIH, Bethesda, MD, USA
| | - Juen Guo
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Meible Chi
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Stephanie T Chung
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes, Digestive, and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Amber B Courville
- Human Energy and Body Weight Regulation Core, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Isabelle Gallagher
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Peter Herscovitch
- Positron Emission Tomography Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Rebecca Howard
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Melissa LaNoire
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lauren Milley
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Alex Schick
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Michael Stagliano
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Sara Turner
- Nutrition Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Nicholas Urbanski
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Shanna Yang
- Nutrition Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Eunha Yim
- University of Maryland, College Park, MD, USA
| | - Nan Zhai
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Megan S Zhou
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Kevin D Hall
- Integrative Physiology Section, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
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11
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Shida AF, Massett RJ, Imms P, Vegesna RV, Amgalan A, Irimia A. Significant Acceleration of Regional Brain Aging and Atrophy After Mild Traumatic Brain Injury. J Gerontol A Biol Sci Med Sci 2023; 78:1328-1338. [PMID: 36879433 PMCID: PMC10395568 DOI: 10.1093/gerona/glad079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Indexed: 03/08/2023] Open
Abstract
Brain regions' rates of age-related volumetric change after traumatic brain injury (TBI) are unknown. Here, we quantify these rates cross-sectionally in 113 persons with recent mild TBI (mTBI), whom we compare against 3 418 healthy controls (HCs). Regional gray matter (GM) volumes were extracted from magnetic resonance images. Linear regression yielded regional brain ages and the annualized average rates of regional GM volume loss. These results were compared across groups after accounting for sex and intracranial volume. In HCs, the steepest rates of volume loss were recorded in the nucleus accumbens, amygdala, and lateral orbital sulcus. In mTBI, approximately 80% of GM structures had significantly steeper rates of annual volume loss than in HCs. The largest group differences involved the short gyri of the insula and both the long gyrus and central sulcus of the insula. No significant sex differences were found in the mTBI group, regional brain ages being the oldest in prefrontal and temporal structures. Thus, mTBI involves significantly steeper regional GM loss rates than in HCs, reflecting older-than-expected regional brain ages.
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Affiliation(s)
- Alexander F Shida
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Roy J Massett
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Phoebe Imms
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Ramanand V Vegesna
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Anar Amgalan
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Andrei Irimia
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
- Corwin D. Denney Research Center, Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA
- Department of Quantitative & Computational Biology, Dana and David Dornsife College of Arts & Sciences, University of Southern California, Los Angeles, California, USA
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12
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Zhou J, Deng W, Chen C, Kang J, Yang X, Dou Z, Wu J, Li Q, Jiang M, Liang M, Han Y. Methcathinone Increases Visually-evoked Neuronal Activity and Enhances Sensory Processing Efficiency in Mice. Neurosci Bull 2023; 39:602-616. [PMID: 36449230 PMCID: PMC10073404 DOI: 10.1007/s12264-022-00965-z] [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: 06/26/2022] [Accepted: 07/18/2022] [Indexed: 12/02/2022] Open
Abstract
Methcathinone (MCAT) belongs to the designer drugs called synthetic cathinones, which are abused worldwide for recreational purposes. It has strong stimulant effects, including enhanced euphoria, sensation, alertness, and empathy. However, little is known about how MCAT modulates neuronal activity in vivo. Here, we evaluated the effect of MCAT on neuronal activity with a series of functional approaches. C-Fos immunostaining showed that MCAT increased the number of activated neurons by 6-fold, especially in sensory and motor cortices, striatum, and midbrain motor nuclei. In vivo single-unit recording and two-photon Ca2+ imaging revealed that a large proportion of neurons increased spiking activity upon MCAT administration. Notably, MCAT induced a strong de-correlation of population activity and increased trial-to-trial reliability, specifically during a natural movie stimulus. It improved the information-processing efficiency by enhancing the single-neuron coding capacity, suggesting a cortical network mechanism of the enhanced perception produced by psychoactive stimulants.
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Affiliation(s)
- Jun Zhou
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wen Deng
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chen Chen
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Junya Kang
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaodan Yang
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhaojuan Dou
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jiancheng Wu
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Quancong Li
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Man Jiang
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Man Liang
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Key Laboratory of Forensic Toxicology, Ministry of Public Security, Beijing, 100192, China.
| | - Yunyun Han
- Department of Neurobiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Key Laboratory of Forensic Toxicology, Ministry of Public Security, Beijing, 100192, China.
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13
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Kang JWM, Keay KA, Kendig MD, Corbit LH, Mor D. Serotonin and Dopamine Show Different Response Profiles to Acute Stress in the Nucleus Accumbens and Medial Prefrontal Cortex of Rats with Neuropathic Pain. Neurochem Res 2023; 48:2265-2280. [PMID: 36941432 PMCID: PMC10182167 DOI: 10.1007/s11064-023-03906-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 02/23/2023] [Accepted: 03/03/2023] [Indexed: 03/23/2023]
Abstract
The ability to adaptively guide behaviour requires the integration of external information with internal motivational factors. Decision-making capabilities can be impaired by acute stress and is often exacerbated by chronic pain. Chronic neuropathic pain patients often present with cognitive dysfunction, including impaired decision-making. The mechanisms underlying these changes are not well understood but may include altered monoaminergic transmission in the brain. In this study we investigated the relationships between dopamine, serotonin, and their metabolites in key brain regions that regulate motivated behaviour and decision-making. The neurochemical profiles of the medial prefrontal cortex, orbital prefrontal cortex, and nucleus accumbens were analysed using HPLC in rats that received a chronic constriction injury (CCI) of the right sciatic nerve and an acute stress (15-min restraint), prior to an outcome devaluation task. CCI alone significantly decreased dopamine but not serotonin concentrations in the medial prefrontal cortex. By contrast, restraint stress acutely increased dopamine in the medial prefrontal cortex, and the nucleus accumbens; and increased serotonin in the medial prefrontal cortex 2 h later. The sustained dopaminergic and serotonergic responses to acute stress highlight the importance of an animal's ability to mount an effective coping response. In addition, these data suggest that the impact of nerve injury and acute stress on outcome-devaluation occurs independently of dopaminergic and serotonergic transmission in the medial prefrontal cortex, orbital prefrontal cortex and nucleus accumbens of rats.
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Affiliation(s)
- James W M Kang
- School of Medical Sciences [Neuroscience], The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Kevin A Keay
- School of Medical Sciences [Neuroscience], The University of Sydney, Sydney, NSW, 2006, Australia
| | - Michael D Kendig
- School of Life Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Laura H Corbit
- Department of Psychology, The University of Toronto, Toronto, ON, M5S 3G3, Canada
| | - David Mor
- School of Medical Sciences [Neuroscience], The University of Sydney, Sydney, NSW, 2006, Australia
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14
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Loh MK, Rosenkranz JA. The medial orbitofrontal cortex governs reward-related circuits in an age-dependent manner. Cereb Cortex 2023; 33:1913-1924. [PMID: 35551358 PMCID: PMC9977359 DOI: 10.1093/cercor/bhac182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 11/14/2022] Open
Abstract
Nucleus accumbens (NAc) neurons integrate excitatory inputs from cortical and limbic structures, contributing to critical cognitive functions, including decision-making. As these afferents mature from adolescence through adulthood, incoming signals to the NAc may summate differently between age groups. Decision-making evaluates both reward and risk before action selection, suggesting an interplay between reward- and risk-related circuits. Medial orbitofrontal cortex (MO)-NAc circuits permit risk assessment behaviors and likely underlie risk information incorporation. As adolescents make reward-centric choices regardless of risk, we hypothesized the impact of MO activity alters reward-related NAc circuits in an age-dependent manner. To test this hypothesis, we used single-unit electrophysiology to measure MO train stimulation's effect on reward-related pathways, specifically the basolateral amygdala (BLA)-NAc circuit, in adult and adolescent rats. MO train stimulation altered the strength but not the timing of BLA-NAc interactions in a frequency-dependent manner. In adults, MO train stimulation produced a frequency-dependent, bidirectional effect on BLA-evoked NAc AP probability. Contrastingly, MO train stimulation uniformly attenuated BLA-NAc interactions in adolescents. While the mature MO can govern reward-related circuits in an activity-dependent manner, perhaps to adapt to positive or negative decision-making outcomes, the adolescent MO may be less able to bidirectionally impact reward-related pathways resulting in biased decision-making.
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Affiliation(s)
- Maxine K Loh
- Department of Foundational Sciences and Humanities, Cellular and Molecular Pharmacology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA.,Center for Neurobiology of Stress Resilience and Psychiatric Disorders, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - J Amiel Rosenkranz
- Department of Foundational Sciences and Humanities, Cellular and Molecular Pharmacology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA.,Center for Neurobiology of Stress Resilience and Psychiatric Disorders, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
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15
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Beck A, Ebrahimi C, Rosenthal A, Charlet K, Heinz A. The Dopamine System in Mediating Alcohol Effects in Humans. Curr Top Behav Neurosci 2023. [PMID: 36705911 DOI: 10.1007/7854_2022_415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Brain-imaging studies show that the development and maintenance of alcohol use disorder (AUD) is determined by a complex interaction of different neurotransmitter systems and multiple psychological factors. In this context, the dopaminergic reinforcement system appears to be of fundamental importance. We focus on the excitatory and depressant effects of acute versus chronic alcohol intake and its impact on dopaminergic neurotransmission. Furthermore, we describe alterations in dopaminergic neurotransmission as associated with symptoms of alcohol dependence. We specifically focus on neuroadaptations to chronic alcohol consumption and their effect on central processing of alcohol-associated and reward-related stimuli. Altered reward processing, complex conditioning processes, impaired reinforcement learning, and increased salience attribution to alcohol-associated stimuli enable alcohol cues to drive alcohol seeking and consumption. Finally, we will discuss how the neurobiological and neurochemical mechanisms of alcohol-associated alterations in reward processing and learning can interact with stress, cognition, and emotion processing.
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Affiliation(s)
- Anne Beck
- Faculty of Health, Health and Medical University, Potsdam, Germany
| | - Claudia Ebrahimi
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt- Universität zu Berlin, Berlin, Germany
| | - Annika Rosenthal
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt- Universität zu Berlin, Berlin, Germany
| | - Katrin Charlet
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt- Universität zu Berlin, Berlin, Germany
| | - Andreas Heinz
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt- Universität zu Berlin, Berlin, Germany.
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16
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Sheynikhovich D, Otani S, Bai J, Arleo A. Long-term memory, synaptic plasticity and dopamine in rodent medial prefrontal cortex: Role in executive functions. Front Behav Neurosci 2023; 16:1068271. [PMID: 36710953 PMCID: PMC9875091 DOI: 10.3389/fnbeh.2022.1068271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/26/2022] [Indexed: 01/12/2023] Open
Abstract
Mnemonic functions, supporting rodent behavior in complex tasks, include both long-term and (short-term) working memory components. While working memory is thought to rely on persistent activity states in an active neural network, long-term memory and synaptic plasticity contribute to the formation of the underlying synaptic structure, determining the range of possible states. Whereas, the implication of working memory in executive functions, mediated by the prefrontal cortex (PFC) in primates and rodents, has been extensively studied, the contribution of long-term memory component to these tasks received little attention. This review summarizes available experimental data and theoretical work concerning cellular mechanisms of synaptic plasticity in the medial region of rodent PFC and the link between plasticity, memory and behavior in PFC-dependent tasks. A special attention is devoted to unique properties of dopaminergic modulation of prefrontal synaptic plasticity and its contribution to executive functions.
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Affiliation(s)
- Denis Sheynikhovich
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France,*Correspondence: Denis Sheynikhovich ✉
| | - Satoru Otani
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Jing Bai
- Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Paris, France
| | - Angelo Arleo
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
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17
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Vavra P, Sokolovič L, Porcu E, Ripollés P, Rodriguez-Fornells A, Noesselt T. Entering into a self-regulated learning mode prevents detrimental effects of feedback removal on memory. NPJ SCIENCE OF LEARNING 2023; 8:2. [PMID: 36609382 PMCID: PMC9823107 DOI: 10.1038/s41539-022-00150-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Incentives can decrease performance by undermining intrinsic motivation. How such an interplay of external reinforcers and internal self-regulation influences memory processes, however, is less known. Here, we investigated their interaction on memory performance while learning the meaning of new-words from their context. Specifically, participants inferred congruent meanings of new-words from semantic context (congruent trials) or lack of congruence (incongruent trials), while receiving external feedback in the first or second half of trials only. Removing feedback during learning of congruent word meanings lowered subsequent recognition rates a day later, whereas recognition remained high in the group, which received feedback only in the second half. In contrast, feedback did not substantially alter recognition rates for learning that new-words had no congruent meanings. Our findings suggest that external reinforcers can selectively impair memories if internal self-regulated processes are not already established, but whether they do so depends on what is being learned (specific word-meanings vs. unspecific incongruence). This highlights the relevance of self-regulated learning in education to support stable memory formation.
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Affiliation(s)
- Peter Vavra
- Department of Biological Psychology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Leo Sokolovič
- Department of Biological Psychology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Emanuele Porcu
- Department of Biological Psychology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
- Center of Behavioral Brain Sciences, Magdeburg, Germany
| | - Pablo Ripollés
- Department of Psychology, New York University, New York, NY, USA
- Music and Audio Research Lab (MARL), New York University, New York, NY, USA
- Center for Language, Music, and Emotion (CLaME), New York University, Max-Planck Institute, New York, NY, USA
| | - Antoni Rodriguez-Fornells
- Department of Cognition, Development, and Educational Science, Institute of Neuroscience, University of Barcelona, L'Hospitalet de Llobregat, 08097, Barcelona, Spain
- Cognition and Brain Plasticity Group, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, 08097, Barcelona, Spain
- Catalan Institution for Research and Advanced Studies, ICREA, Barcelona, Spain
| | - Toemme Noesselt
- Department of Biological Psychology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
- Center of Behavioral Brain Sciences, Magdeburg, Germany.
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18
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Rezaei M, Raoufy MR, Fathollahi Y, Shojaei A, Mirnajafi-Zadeh J. Tonic and phasic stimulations of ventral tegmental area have opposite effects on pentylenetetrazol kindled seizures in mice. Epilepsy Res 2023; 189:107073. [PMID: 36584482 DOI: 10.1016/j.eplepsyres.2022.107073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/16/2022] [Accepted: 12/26/2022] [Indexed: 12/28/2022]
Abstract
Dopamine may be involved in the anticonvulsant action of deep brain stimulation (DBS). Therefore, ventral tegmental area (VTA), as a brain dopaminergic nucleus, may be a suitable target for DBS anticonvulsant action. This study investigated the effect of tonic and phasic stimulations of the VTA on seizure parameters. Seizures were induced in adult mice by sequential injections of a sub-convulsive dose of 35 mg/kg pentylenetetrazole (PTZ) every 48 h to develop the chemical kindling until the mice reached full kindled state (showing three consecutive seizure stages 4 or 5). Fully kindled mice received DBS once a day as tonic (square waves at 1 Hz; pulse duration: 200 μs; intensity: 300 μA; 600 pulses in 10 min) or phasic (square waves at 100 Hz; pulse duration: 200 μs; intensity: 300 μA; 8 trains of 10 pulses at 1 min interval; 800 pulses in 10 min) stimulations applied into their VTA for 4 days. A single dose of PTZ was injected after each DBS. Simultaneously electrocorticography and video recordings were performed during the seizure for accuracy in seizure severity parameters detection. Tonic but not phasic stimulation significantly decreased the epileptiform discharge duration and the seizure behavioral parameters such as maximum seizure stage, stage 5 duration, seizure duration. In addition, focal to generalized seizure latency increased following VTA tonic stimulation. These data suggest that tonic (but not phasic) stimulation of VTA before PTZ injection on 4 test days had anticonvulsant effects on PTZ-kindled seizures.
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Affiliation(s)
- Mahmoud Rezaei
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Reza Raoufy
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Yaghoub Fathollahi
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Amir Shojaei
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Institute for Brain Sciences and Cognition, Tarbiat Modares University, Tehran, Iran
| | - Javad Mirnajafi-Zadeh
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Institute for Brain Sciences and Cognition, Tarbiat Modares University, Tehran, Iran.
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19
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Meccia J, Lopez J, Bagot RC. Probing the antidepressant potential of psilocybin: integrating insight from human research and animal models towards an understanding of neural circuit mechanisms. Psychopharmacology (Berl) 2023; 240:27-40. [PMID: 36564671 DOI: 10.1007/s00213-022-06297-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 12/12/2022] [Indexed: 12/25/2022]
Abstract
Interest in the therapeutic potential of serotonergic psychedelic compounds including psilocybin has surged in recent years. While human clinical research suggests psilocybin holds promise as a rapid and long-lasting antidepressant, little is known about how its acute mechanisms of action mediate enduring alterations in cognition and behavior. Human neuroimaging studies point to both acute and sustained modulation of functional connectivity in key cortically dependent brain networks. Emerging evidence in preclinical models highlights the importance of psilocybin-induced neuroplasticity and alterations in the prefrontal cortex (PFC). Overviewing research in both humans and preclinical models suggests avenues to increase crosstalk between fields. We review how acute modulation of PFC circuits may contribute to long-term structural and functional alterations to mediate antidepressant effects. We highlight the potential for preclinical circuit and behavioral neuroscience approaches to provide basic mechanistic insight into how psilocybin modulates cognitive and affective neural circuits to support further development of psilocybin as a promising new treatment for depression.
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Affiliation(s)
- Juliet Meccia
- Department of Psychology, McGill University, 1205 Ave Dr. Penfield, Montréal, QC, H3A 1B1, Canada
| | - Joëlle Lopez
- Department of Psychology, McGill University, 1205 Ave Dr. Penfield, Montréal, QC, H3A 1B1, Canada
| | - Rosemary C Bagot
- Department of Psychology, McGill University, 1205 Ave Dr. Penfield, Montréal, QC, H3A 1B1, Canada. .,Ludmer Centre for Neuroinformatics and Mental Health, Montréal, QC, Canada.
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20
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Tsarouchi M, Fanarioti E, Karathanos VT, Dermon CR. Protective Effects of Currants ( Vitis vinifera) on Corticolimbic Serotoninergic Alterations and Anxiety-like Comorbidity in a Rat Model of Parkinson's Disease. Int J Mol Sci 2022; 24:ijms24010462. [PMID: 36613906 PMCID: PMC9820698 DOI: 10.3390/ijms24010462] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/18/2022] [Accepted: 12/19/2022] [Indexed: 12/29/2022] Open
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder characterized by the loss of nigral dopaminergic neurons. Increasing evidence supports that PD is not simply a motor disorder but a systemic disease leading to motor and non-motor symptoms, including memory loss and neuropsychiatric conditions, with poor management of the non-motor deficits by the existing dopaminergic medication. Oxidative stress is considered a contributing factor for nigrostriatal degeneration, while antioxidant/anti-inflammatory properties of natural phyto-polyphenols have been suggested to have beneficial effects. The present study aimed to determine the contribution of monoaminergic neurotransmission on the anxiety-like phenotype in a rat rotenone PD model and evaluate the possible neuroprotective effects of black Corinthian currant, Vitis vinifera, consisting of antioxidant polyphenols. Rotenone-treated rats showed anxiety-like behavior and exploratory deficits, accompanied by changes in 5-HT, SERT and β2-ARs expression in the prefrontal cortices, hippocampus and basolateral amygdala. Importantly, the motor and non-motor behavior, as well as 5-HT, SERT and β2-ARs expression patterns of the PD-like phenotype were partially recovered by a supplementary diet with currants. Overall, our results suggest that the neuroprotective effects of Corinthian currants in rotenone-induced anxiety-like behavior may be mediated via corticolimbic serotonergic transmission.
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Affiliation(s)
- Martha Tsarouchi
- Laboratory of Human and Animal Physiology, Department of Biology, University of Patras, 265 00 Patras, Greece
| | - Eleni Fanarioti
- Laboratory of Human and Animal Physiology, Department of Biology, University of Patras, 265 00 Patras, Greece
| | - Vaios T. Karathanos
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Dietetics and Nutrition, Harokopio University, 176 76 Kallithea, Greece
- Agricultural Cooperatives’ Union of Aeghion, Corinthou 201, 251 00 Aeghion, Greece
| | - Catherine R. Dermon
- Laboratory of Human and Animal Physiology, Department of Biology, University of Patras, 265 00 Patras, Greece
- Correspondence:
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Preclinical and clinical evidence on the approach-avoidance conflict evaluation as an integrative tool for psychopathology. Epidemiol Psychiatr Sci 2022; 31:e90. [PMID: 36510831 PMCID: PMC9762142 DOI: 10.1017/s2045796022000725] [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: 12/15/2022] Open
Abstract
The approach-avoidance conflict (AAC), i.e. the competing tendencies to undertake goal-directed actions or to withdraw from everyday life challenges, stands at the basis of humans' existence defining behavioural and personality domains. Gray's Reinforcement Sensitivity Theory posits that a stable bias toward approach or avoidance represents a psychopathological trait associated with excessive sensitivity to reward or punishment. Optogenetic studies in rodents and imaging studies in humans associated with cross-species AAC paradigms granted new emphasis to the hippocampus as a hub of behavioural inhibition. For instance, recent functional neuroimaging studies show that functional brain activity in the human hippocampus correlates with threat perception and seems to underlie passive avoidance. Therefore, our commentary aims to (i) discuss the inhibitory role of the hippocampus in approach-related behaviours and (ii) promote the integration of functional neuroimaging with cross-species AAC paradigms as a means of diagnostic, therapeutic, follow up and prognosis refinement in psychiatric populations.
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22
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Yoshida J, Oñate M, Khatami L, Vera J, Nadim F, Khodakhah K. Cerebellar Contributions to the Basal Ganglia Influence Motor Coordination, Reward Processing, and Movement Vigor. J Neurosci 2022; 42:8406-8415. [PMID: 36351826 PMCID: PMC9665921 DOI: 10.1523/jneurosci.1535-22.2022] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/30/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Both the cerebellum and the basal ganglia are known for their roles in motor control and motivated behavior. These two systems have been classically considered as independent structures that coordinate their contributions to behavior via separate cortico-thalamic loops. However, recent evidence demonstrates the presence of a rich set of direct connections between these two regions. Although there is strong evidence for connections in both directions, for brevity we limit our discussion to the better-characterized connections from the cerebellum to the basal ganglia. We review two sets of such connections: disynaptic projections through the thalamus and direct monosynaptic projections to the midbrain dopaminergic nuclei, the VTA and the SNc. In each case, we review the evidence for these pathways from anatomic tracing and physiological recordings, and discuss their potential functional roles. We present evidence that the disynaptic pathway through the thalamus is involved in motor coordination, and that its dysfunction contributes to motor deficits, such as dystonia. We then discuss how cerebellar projections to the VTA and SNc influence dopamine release in the respective targets of these nuclei: the NAc and the dorsal striatum. We argue that the cerebellar projections to the VTA may play a role in reward-based learning and therefore contribute to addictive behavior, whereas the projection to the SNc may contribute to movement vigor. Finally, we speculate how these projections may explain many of the observations that indicate a role for the cerebellum in mental disorders, such as schizophrenia.
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Affiliation(s)
- Junichi Yoshida
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
| | - Maritza Oñate
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
| | - Leila Khatami
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
| | - Jorge Vera
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
| | - Farzan Nadim
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
- Department of Biological Sciences, New Jersey Institute of Technology, Newark, New Jersey, 07102
| | - Kamran Khodakhah
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461
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23
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Duration- and sex-dependent neural circuit control of voluntary physical activity. Psychopharmacology (Berl) 2022; 239:3697-3709. [PMID: 36195731 PMCID: PMC9768838 DOI: 10.1007/s00213-022-06243-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/20/2022] [Indexed: 10/10/2022]
Abstract
RATIONALE Exercise participation remains low despite clear benefits. Rats engage in voluntary wheel running (VWR) that follows distinct phases of acquisition, during which VWR escalates, and maintenance, during which VWR remains stable. Understanding mechanisms driving acquisition and maintenance of VWR could lead to novel strategies to promote exercise. The two phases of VWR resemble those that occur during operant conditioning and, therefore, might involve similar neural substrates. The dorsomedial (DMS) dorsal striatum (DS) supports the acquisition of operant conditioning, whereas the dorsolateral striatum (DLS) supports its maintenance. OBJECTIVES Here we sought to characterize the roles of DS subregions in VWR. Females escalate VWR and operant conditioning faster than males. Thus, we also assessed for sex differences. METHODS To determine the causal role of DS subregions in VWR, we pharmacologically inactivated the DMS or DLS of adult, male and female, Long-Evans rats during the two phases of VWR. The involvement of DA receptor 1 (D1)-expressing neurons in the DS was investigated by quantifying cfos mRNA within this neuronal population. RESULTS We observed that, in males, the DMS and DLS are critical for VWR exclusively during acquisition and maintenance, respectively. In females, the DMS is also critical only during acquisition, but the DLS contributes to VWR during both VWR phases. DLS D1 neurons could be an important driver of VWR escalation during acquisition. CONCLUSIONS The acquisition and maintenance of VWR involve unique neural substrates in the DS that vary by sex. Results reveal targets for sex-specific strategies to promote exercise.
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Bigliassi M, Filho E. Functional significance of the dorsolateral prefrontal cortex during exhaustive exercise. Biol Psychol 2022; 175:108442. [DOI: 10.1016/j.biopsycho.2022.108442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/28/2022] [Accepted: 10/08/2022] [Indexed: 11/28/2022]
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25
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Jiang K, Liu X, Su R. Contrasting effects of DOI and lisuride on impulsive decision-making in delay discounting task. Psychopharmacology (Berl) 2022; 239:3551-3565. [PMID: 36107207 DOI: 10.1007/s00213-022-06229-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 08/28/2022] [Indexed: 11/25/2022]
Abstract
RATIONALE The 5-HT2A receptor is the major target of classic hallucinogens. Both DOI (2,5-dimethoxy-4-iodoamphetamine) and lisuride act at 5-HT2A receptors, and lisuride shares comparable affinity with DOI and acts as a partial agonist at 5-HT2A receptors. However, not like DOI, lisuride lacks hallucinogenic properties. Impulsive decision-making refers to the preference for an immediate small reinforcer (SR) over a delayed large reinforcer (LR). OBJECTIVES The current study aims to compare the effects of DOI and lisuride on impulsive decision-making and further to investigate the possible receptor mechanisms responsible for the actions of the two drugs. METHODS Impulsive decision-making was evaluated in male Sprague-Dawley rats by the percentage of choice for the LR in delay discounting task (DDT). Delay to the LR changed in an ascending order (0, 4, 8, 16, and 32 s) across one session. RESULTS DOI (0.5 and 1.0 mg/kg) increased impulsive decision-making, and the effects of DOI (1.0 mg/kg) were blocked by the 5-HT2A receptor antagonist ketanserin (1.0 mg/kg) rather than the 5-HT2C receptor antagonist SB-242084 (1.0 mg/kg). Contrarily, lisuride (0.1, 0.3, and 0.5 mg/kg) decreased impulsive decision-making. The effects of lisuride (0.3 mg/kg) were not antagonized by ketanserin (1.0 mg/kg), selective 5-HT1A antagonist WAY-100635 (1.0 mg/kg), or selective dopamine D4 receptor antagonist L-745870 (1.0 mg/kg) but were attenuated by the selective dopamine D2/D3 receptor antagonist tiapride (40 mg/kg). CONCLUSIONS DOI and lisuride have contrasting effects on impulsive decision-making via distinct receptors. DOI-induced increase of impulsivity is mediated by the 5-HT2A receptor, while lisuride-induced inhibition of impulsivity is regulated by the dopamine D2/D3 receptor.
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Affiliation(s)
- Kaili Jiang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing, 100850, China
| | - Xiaoyan Liu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing, 100850, China.
| | - Ruibin Su
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, 27th Taiping Road, Beijing, 100850, China.
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26
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Gong L, Zhou H, Su C, Geng F, Xi W, Teng B, Yuan K, Zhao M, Hu Y. Self‐control impacts symptoms defining Internet gaming disorder through dorsal anterior cingulate–ventral striatal pathway. Addict Biol 2022; 27:e13210. [DOI: 10.1111/adb.13210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 06/06/2022] [Accepted: 06/27/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Liangyu Gong
- Department of Psychology and Behavioral Sciences Zhejiang University Zhejiang China
| | - Hui Zhou
- Department of Psychology and Behavioral Sciences Zhejiang University Zhejiang China
| | - Conghui Su
- Department of Psychology and Behavioral Sciences Zhejiang University Zhejiang China
| | - Fengji Geng
- Department of Curriculum and Learning Sciences Zhejiang University Zhejiang China
| | - Wan Xi
- Department of Psychology and Behavioral Sciences Zhejiang University Zhejiang China
| | - Binyu Teng
- Department of Psychology and Behavioral Sciences Zhejiang University Zhejiang China
| | - Kai Yuan
- School of Life Science and Technology Xidian University Shanxi China
| | - Min Zhao
- Shanghai Mental Health Center Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Yuzheng Hu
- Department of Psychology and Behavioral Sciences Zhejiang University Zhejiang China
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27
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Kaźmierczak M, Nicola SM. The Arousal-motor Hypothesis of Dopamine Function: Evidence that Dopamine Facilitates Reward Seeking in Part by Maintaining Arousal. Neuroscience 2022; 499:64-103. [PMID: 35853563 PMCID: PMC9479757 DOI: 10.1016/j.neuroscience.2022.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 06/28/2022] [Accepted: 07/12/2022] [Indexed: 10/17/2022]
Abstract
Dopamine facilitates approach to reward via its actions on dopamine receptors in the nucleus accumbens. For example, blocking either D1 or D2 dopamine receptors in the accumbens reduces the proportion of reward-predictive cues to which rats respond with cued approach. Recent evidence indicates that accumbens dopamine also promotes wakefulness and arousal, but the relationship between dopamine's roles in arousal and reward seeking remains unexplored. Here, we show that the ability of systemic or intra-accumbens injections of the D1 antagonist SCH23390 to reduce cued approach to reward depends on the animal's state of arousal. Handling the animal, a manipulation known to increase arousal, was sufficient to reverse the behavioral effects of the antagonist. In addition, SCH23390 reduced spontaneous locomotion and increased time spent in sleep postures, both consistent with reduced arousal, but also increased time spent immobile in postures inconsistent with sleep. In contrast, the ability of the D2 antagonist haloperidol to reduce cued approach was not reversible by handling. Haloperidol reduced spontaneous locomotion but did not increase sleep postures, instead increasing immobility in non-sleep postures. We place these results in the context of the extensive literature on dopamine's contributions to behavior, and propose the arousal-motor hypothesis. This novel synthesis, which proposes that two main functions of dopamine are to promote arousal and facilitate motor behavior, accounts both for our findings and many previous behavioral observations that have led to disparate and conflicting conclusions.
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Affiliation(s)
- Marcin Kaźmierczak
- Departments of Neuroscience and Psychiatry, Albert Einstein College of Medicine, 1300 Morris Park Ave, Forchheimer 111, Bronx, NY 10461, USA
| | - Saleem M Nicola
- Departments of Neuroscience and Psychiatry, Albert Einstein College of Medicine, 1300 Morris Park Ave, Forchheimer 111, Bronx, NY 10461, USA.
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28
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van den Bosch R, Lambregts B, Määttä J, Hofmans L, Papadopetraki D, Westbrook A, Verkes RJ, Booij J, Cools R. Striatal dopamine dissociates methylphenidate effects on value-based versus surprise-based reversal learning. Nat Commun 2022; 13:4962. [PMID: 36002446 PMCID: PMC9402573 DOI: 10.1038/s41467-022-32679-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 08/10/2022] [Indexed: 11/13/2022] Open
Abstract
Psychostimulants such as methylphenidate are widely used for their cognitive enhancing effects, but there is large variability in the direction and extent of these effects. We tested the hypothesis that methylphenidate enhances or impairs reward/punishment-based reversal learning depending on baseline striatal dopamine levels and corticostriatal gating of reward/punishment-related representations in stimulus-specific sensory cortex. Young healthy adults (N = 100) were scanned with functional magnetic resonance imaging during a reward/punishment reversal learning task, after intake of methylphenidate or the selective D2/3-receptor antagonist sulpiride. Striatal dopamine synthesis capacity was indexed with [18F]DOPA positron emission tomography. Methylphenidate improved and sulpiride decreased overall accuracy and response speed. Both drugs boosted reward versus punishment learning signals to a greater degree in participants with higher dopamine synthesis capacity. By contrast, striatal and stimulus-specific sensory surprise signals were boosted in participants with lower dopamine synthesis. These results unravel the mechanisms by which methylphenidate gates both attention and reward learning. The mechanisms underpinning the variability in methylphenidate’s effects on cognition remain unclear. Here, the authors show that such effects reflect changes in striatal dopamine-related output gating of task-relevant cortical signals, and that these changes depend on baseline dopamine synthesis capacity.
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Affiliation(s)
- Ruben van den Bosch
- Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands.
| | - Britt Lambregts
- Radboud University Medical Center, Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Jessica Määttä
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Lieke Hofmans
- Department of Developmental Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Danae Papadopetraki
- Radboud University Medical Center, Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Andrew Westbrook
- Cognitive, Linguistic & Psychological Sciences Department, Brown University, Providence, RI, USA
| | - Robbert-Jan Verkes
- Radboud University Medical Center, Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Jan Booij
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, location Academic Medical Center, Amsterdam, The Netherlands.,Radboud University Medical Center, Department of Medical Imaging, Nijmegen, The Netherlands
| | - Roshan Cools
- Radboud University Medical Center, Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
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29
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Zhang D, Yao J, Ma J, Gao L, Sun J, Fang J, He H, Wu T. Connectivity of corticostriatal circuits in nonmanifesting LRRK2 G2385R and R1628P carriers. CNS Neurosci Ther 2022; 28:2024-2031. [PMID: 35934920 PMCID: PMC9627388 DOI: 10.1111/cns.13933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/17/2022] [Accepted: 07/21/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Neuroimaging studies have shown that the functional connectivity (FC) of corticostriatal circuits in nonmanifesting leucine-rich repeat kinase 2 (LRRK2) G2019S mutation carriers mirrors neural changes in idiopathic Parkinson's disease (PD). In contrast, neural network changes in LRRK2 G2385R and R1628P mutations are unclear. We aimed to investigate the FC of corticostriatal circuits in nonmanifesting LRRK2 G2385R and R1628P mutation carriers (NMCs). METHODS Twenty-three NMCs, 28 PD patients, and 29 nonmanifesting noncarriers (NMNCs) were recruited. LRRK2 mutation analysis was performed on all participants. Clinical evaluation included MDS-UPDRS. RESULTS When compared to NMNCs, NMCs showed significantly reduced FC between the caudate nucleus and superior frontal gyrus and cerebellum, and between the nucleus accumbens and parahippocampal gyrus, amygdala, and insula. We also found increased striatum-cortical FC in NMCs. CONCLUSIONS Although the corticostriatal circuits have characteristic changes similar to PD, the relatively intact function of the sensorimotor striatum-cortical loop may result in less possibility of developing parkinsonian motor symptoms for the NMCs. This study helps explain why LRRK2 G2385R and R1628P mutations are risk factors rather than pathogenic mutations for PD and suggests that various LRRK2 mutations have distinct effects on neural networks.
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Affiliation(s)
- Dongling Zhang
- Department of Neurology, Center for Movement Disorders, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina,China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Junye Yao
- Center for Brain Imaging Science and TechnologyCollege of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhouChina
| | - Jinghong Ma
- Department of Neurobiology, Beijing Institute of GeriatricsXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Linlin Gao
- Department of Neurobiology, Beijing Institute of GeriatricsXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Junyan Sun
- Department of Neurology, Center for Movement Disorders, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina,China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Jiliang Fang
- Department of Radiology, Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijingChina
| | - Hongjian He
- Center for Brain Imaging Science and TechnologyCollege of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhouChina
| | - Tao Wu
- Department of Neurology, Center for Movement Disorders, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina,China National Clinical Research Center for Neurological DiseasesBeijingChina,Parkinson's Disease Center, Beijing Institute for Brain DisordersCapital Medical UniversityBeijingChina
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30
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Lemos L, Assis HC, Alves JL, Reis DS, Campos Canesso MC, Almeida Oliveira M, Moreira TG, Miranda Sato BK, Batista LA, Gomes Lenzi J, Moraes MA, Melo L, Resende B, Aguiar D, Rezende Souza B, Cara DC, Gomes-Santos AC, Faria AMC. Neuroimmune circuits involved in β-lactoglobulin-induced food allergy. Brain Behav Immun Health 2022; 23:100471. [PMID: 35668724 PMCID: PMC9166446 DOI: 10.1016/j.bbih.2022.100471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/16/2022] Open
Abstract
Several antigens can act as allergens eliciting IgE-mediated food allergy reactions when fed to sensitized animals. One of them is ovalbumin (OVA) which is the main allergen in egg white. Allergic mice develop aversion to OVA consumption. This aversive behavior is associated with anxiety, and it can be transferred to non-sensitized mice by injection of serum of allergic mice. However, it is yet to be determined whether altered behavior is a general component of food allergy or whether it is specific for some types of allergens. Cow's milk allergy is the most prevalent food allergy that usually begins early in life and β-lactoglobulin (BLG) is the milk component with the highest allergenicity. In this study, we investigated behavioral and neuroimmune circuits triggered by allergic sensitization to BLG. A neuroimmune conflict between aversion and reward was observed in a model of food allergy induced by BLG intake. Mice sensitized to BLG did not present aversive behavior when BLG was used for sensitization and oral challenge. Mice allergic to BLG preferred to drink the allergen-containing solution over water even though they had high levels of specific IgE, inflammatory cells in the intestinal mucosa and significant weight loss. When sensitized to OVA and challenged with the same antigen, mice had increased levels of neuron activation in the amygdala, a brain area related to anxiety. On the other hand, when mice were sensitized to OVA and received a mixture of BLG and OVA in the oral challenge, mice preferred to drink this mixture, despite their aversion to OVA, which was associated with neuron activation in the nucleus accumbens, an area related to reward behavior. Thus, the aversive behavior observed in food allergy to OVA does not apply to all antigens and some allergens may activate the brain reward system rather than anxiety and aversion. Our study provides novel insights into the neuroimmune conflicts regarding preference and avoidance to a common antigen associated with food allergy.
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Affiliation(s)
- Luísa Lemos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Helder Carvalho Assis
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Juliana Lima Alves
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniela Silva Reis
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria Cecilia Campos Canesso
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Mariana Almeida Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Thais Garcias Moreira
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Luara Augusta Batista
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Julia Gomes Lenzi
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Muiara Aparecida Moraes
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luciana Melo
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Bruna Resende
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Danielle Aguiar
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Bruno Rezende Souza
- Departamento de Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Denise Carmona Cara
- Departamento de Morfologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ana Cristina Gomes-Santos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Centro Universitário UNA, Instituto de Ciências Biológicas e da Saúde, Belo Horizonte, MG, Brazil
| | - Ana Maria Caetano Faria
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Buhusi CV, Meyer AE, Oprisan SA, Buhusi M. Not All Mice Are Created Equal: Interval Timing Accuracy and Scalar Timing in 129, Swiss-Webster, and C57BL/6 Mice. TIMING & TIME PERCEPTION 2022; 11:242-262. [PMID: 37065684 PMCID: PMC10103834 DOI: 10.1163/22134468-bja10052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
Many species, including humans, show both accurate timing − appropriate time estimation in the seconds to minutes range − and scalar timing − time estimation error varies linearly with estimated duration. Behavioral paradigms aimed at investigating interval timing are expected to evaluate these dissociable characteristics of timing. However, when evaluating interval timing in models of neuropsychiatric disease, researchers are confronted with a lack of adequate studies about the parent (background) strains, since accuracy and scalar timing have only been demonstrated for the C57BL/6 strain of mice (Buhusi, Aziz, Winslow, Carter, Swearingen, & Buhusi (2009) Behav. Neurosci., 123, 1102–1113). We used a peak-interval (PI) procedure with three intervals − a protocol in which other species, including humans, demonstrate accurate, scalar timing − to evaluate timing accuracy and scalar timing in three strains of mice frequently used in genetic and behavioral studies: 129, Swiss-Webster (SW), and C57BL/6. C57BL/6 mice showed accurate, scalar timing, while 129 and SW mice showed departures from accuracy and/or scalar timing. Results suggest that the genetic background/strain of the mouse is a critical variable for studies investigating interval timing in genetically engineered mice. Our study validates the PI procedure with multiple intervals as a proper technique, and the C57BL/6 strain as the most suitable genetic background to date for behavioral investigations of interval timing in genetically engineered mice modeling human disorders. In contrast, studies using mice in 129, SW, or mixed-background strains should be interpreted with caution, and thorough investigations of accuracy and scalar timing should be conducted before a less studied strain of mouse is considered for use in timing studies.
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Affiliation(s)
- Catalin V. Buhusi
- Neuroscience Program, Department of Psychology, Utah State University, Logan, UT 84322, USA
| | - Abby E. Meyer
- Department of Physics and Astronomy, College of Charleston, Charleston, SC 29424, USA
| | - Sorinel A. Oprisan
- Department of Physics and Astronomy, College of Charleston, Charleston, SC 29424, USA
| | - Mona Buhusi
- Neuroscience Program, Department of Psychology, Utah State University, Logan, UT 84322, USA
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Melis MR, Sanna F, Argiolas A. Dopamine, Erectile Function and Male Sexual Behavior from the Past to the Present: A Review. Brain Sci 2022; 12:brainsci12070826. [PMID: 35884633 PMCID: PMC9312911 DOI: 10.3390/brainsci12070826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/08/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022] Open
Abstract
Early and recent studies show that dopamine through its neuronal systems and receptor subtypes plays different roles in the control of male sexual behavior. These studies show that (i) the mesolimbic/mesocortical dopaminergic system plays a key role in the preparatory phase of sexual behavior, e.g., in sexual arousal, motivation and reward, whereas the nigrostriatal system controls the sensory-motor coordination necessary for copulation, (ii) the incertohypothalamic system is involved in the consummatory aspects of sexual behavior (penile erection and copulation), but evidence for its role in sexual motivation is also available, (iii) the pro-sexual effects of dopamine occur in concert with neural systems interconnecting the hypothalamus and preoptic area with the spinal cord, ventral tegmental area and other limbic brain areas and (iv) D2 and D4 receptors play a major role in the pro-sexual effects of dopamine. Despite some controversy, increases or decreases, respectively, of brain dopamine activity induced by drugs or that occur physiologically, usually improves or worsens, respectively, sexual activity. These findings suggest that an altered central dopaminergic tone plays a role in mental pathologies characterized by aberrant sexual behavior, and that pro-erectile D4 receptor agonists may be considered a new strategy for the treatment of erectile dysfunction in men.
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A Novel and Selective Dopamine Transporter Inhibitor, (S)-MK-26, Promotes Hippocampal Synaptic Plasticity and Restores Effort-Related Motivational Dysfunctions. Biomolecules 2022; 12:biom12070881. [PMID: 35883437 PMCID: PMC9312958 DOI: 10.3390/biom12070881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/09/2022] [Accepted: 06/21/2022] [Indexed: 11/20/2022] Open
Abstract
Dopamine (DA), the most abundant human brain catecholaminergic neurotransmitter, modulates key behavioral and neurological processes in young and senescent brains, including motricity, sleep, attention, emotion, learning and memory, and social and reward-seeking behaviors. The DA transporter (DAT) regulates transsynaptic DA levels, influencing all these processes. Compounds targeting DAT (e.g., cocaine and amphetamines) were historically used to shape mood and cognition, but these substances typically lead to severe negative side effects (tolerance, abuse, addiction, and dependence). DA/DAT signaling dysfunctions are associated with neuropsychiatric and progressive brain disorders, including Parkinson’s and Alzheimer diseases, drug addiction and dementia, resulting in devastating personal and familial concerns and high socioeconomic costs worldwide. The development of low-side-effect, new/selective medicaments with reduced abuse-liability and which ameliorate DA/DAT-related dysfunctions is therefore crucial in the fields of medicine and healthcare. Using the rat as experimental animal model, the present work describes the synthesis and pharmacological profile of (S)-MK-26, a new modafinil analogue with markedly improved potency and selectivity for DAT over parent drug. Ex vivo electrophysiology revealed significantly augmented hippocampal long-term synaptic potentiation upon acute, intraperitoneally delivered (S)-MK-26 treatment, whereas in vivo experiments in the hole-board test showed only lesser effects on reference memory performance in aged rats. However, in effort-related FR5/chow and PROG/chow feeding choice experiments, (S)-MK-26 treatment reversed the depression-like behavior induced by the dopamine-depleting drug tetrabenazine (TBZ) and increased the selection of high-effort alternatives. Moreover, in in vivo microdialysis experiments, (S)-MK-26 significantly increased extracellular DA levels in the prefrontal cortex and in nucleus accumbens core and shell. These studies highlight (S)-MK-26 as a potent enhancer of transsynaptic DA and promoter of synaptic plasticity, with predominant beneficial effects on effort-related behaviors, thus proposing therapeutic potentials for (S)-MK-26 in the treatment of low-effort exertion and motivational dysfunctions characteristic of depression and aging-related disorders.
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Structural Plasticity of the Hippocampus in Neurodegenerative Diseases. Int J Mol Sci 2022; 23:ijms23063349. [PMID: 35328770 PMCID: PMC8955928 DOI: 10.3390/ijms23063349] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 12/10/2022] Open
Abstract
Neuroplasticity is the capacity of neural networks in the brain to alter through development and rearrangement. It can be classified as structural and functional plasticity. The hippocampus is more susceptible to neuroplasticity as compared to other brain regions. Structural modifications in the hippocampus underpin several neurodegenerative diseases that exhibit cognitive and emotional dysregulation. This article reviews the findings of several preclinical and clinical studies about the role of structural plasticity in the hippocampus in neurodegenerative diseases, including Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, and multiple sclerosis. In this study, literature was surveyed using Google Scholar, PubMed, Web of Science, and Scopus, to review the mechanisms that underlie the alterations in the structural plasticity of the hippocampus in neurodegenerative diseases. This review summarizes the role of structural plasticity in the hippocampus for the etiopathogenesis of neurodegenerative diseases and identifies the current focus and gaps in knowledge about hippocampal dysfunctions. Ultimately, this information will be useful to propel future mechanistic and therapeutic research in neurodegenerative diseases.
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Chen G, Yu D, Wu Y, Dong J, Hu L, Feng N. Dopamine D2 receptors in the nucleus accumbens modulate erectile function in a rat model of nonorganic erectile dysfunction. Andrology 2022; 10:808-817. [PMID: 35235251 PMCID: PMC9311273 DOI: 10.1111/andr.13171] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/29/2021] [Accepted: 02/06/2022] [Indexed: 11/29/2022]
Abstract
Background The central molecular mechanisms of nonorganic erectile dysfunction remains unknown. Objective This study aimed to investigate the association of dopaminergic neurons projecting to the nucleus accumbens of male rats with nonorganic erectile dysfunction. Materials/methods Nonorganic erectile dysfunction was induced by chronic mild stress. The sucrose consumption test, sexual behavior test, and apomorphine test were carried out to select depression‐like rats with erectile dysfunction. These rats were considered as nonorganic erectile dysfunction model rats. Dopamine D1/D2 receptor agonist/antagonist was infused into the nucleus accumbens to observe the effect on sexual behavior. Dopaminergic projections to the nucleus accumbens were labeled with both the retrograde tracer FluoroGold injected into the nucleus accumbens and tyrosine hydroxylase. The expression level of tyrosine hydroxylase in dopaminergic neurons projecting to the nucleus accumbens in the ventral tegmental area was measured. The expression levels of dopamine D1/D2 receptors and tyrosine hydroxylase in the nucleus accumbens were also measured. Results Nonorganic erectile dysfunction was proved by the sucrose consumption test, sexual behavior test, and apomorphine test in model rats. After central infusion of the dopamine D2 receptor agonist into the nucleus accumbens, the recovery of erectile function, sexual arousal, and motivation were indicated by increased intromission ratio and decreased mount latency. Decreased expression levels of dopamine D2 receptors and tyrosine hydroxylase in the nucleus accumbens and decreased expression level of tyrosine hydroxylase in the dopaminergic neurons projecting to the nucleus accumbens were observed in model rats. Discussion These results suggest the impairment of dopaminergic neurons projecting to the nucleus accumbens and dopamine D2 signaling in the nucleus accumbens, causing the suppression of erectile function, sexual arousal, and motivation. Conclusion These results suggest that the impaired dopamine D2 receptor pathway in the nucleus accumbens may be one of the main pathway involved in the development of nonorganic erectile dysfunction in the present model.
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Affiliation(s)
- Guotao Chen
- Department of Urology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Deshui Yu
- Department of Urology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Yunhong Wu
- Department of Urology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Jian Dong
- Department of Urology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Lei Hu
- Department of Urology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Ninghan Feng
- Department of Urology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
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Chan SY, Ong ZY, Ngoh ZM, Chong YS, Zhou JH, Fortier MV, Daniel LM, Qiu A, Meaney MJ, Tan AP. Structure-function coupling within the reward network in preschool children predicts executive functioning in later childhood. Dev Cogn Neurosci 2022; 55:101107. [PMID: 35413663 PMCID: PMC9010704 DOI: 10.1016/j.dcn.2022.101107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 03/11/2022] [Accepted: 03/29/2022] [Indexed: 11/12/2022] Open
Abstract
Early differences in reward behavior have been linked to executive functioning development. The nucleus accumbens (NAc) and orbitofrontal cortex (OFC) are activated by reward-related tasks and identified as key nodes of the brain circuit that underlie reward processing. We aimed to investigate the relation between NAc-OFC structural and functional connectivity in preschool children, as well as associations with future reward sensitivity and executive function. We showed that NAc-OFC structural and functional connectivity were not significantly associated in preschool children, but both independently predicted sensitivity to reward in males in a left-lateralized manner. Moreover, significant NAc-OFC structure-function coupling was only found in individuals who performed poorly on executive function tasks in later childhood, but not in the middle- and high-performing groups. As structure-function coupling is proposed to measure functional specialization, this finding suggests premature functional specialization within the reward network, which may impede dynamic communication with other regions, affects executive function development. Our study also highlights the utility of multimodal imaging data integration when studying the effects of reward network functional flexibility in the preschool age, a critical period in brain and executive function development. Functional connectivity is not tethered to structural connectivity in preschool age. Higher degree of SC-FC coupling reflects lower plasticity in early childhood. Gender differences in reward sensitivity were present as early as in preschool age. Early reward network SC-FC coupling affects later executive function.
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Local accumbens in vivo imaging during deep brain stimulation reveals a strategy-dependent amelioration of hedonic feeding. Proc Natl Acad Sci U S A 2022; 119:2109269118. [PMID: 34921100 PMCID: PMC8740575 DOI: 10.1073/pnas.2109269118] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2021] [Indexed: 11/18/2022] Open
Abstract
Impulsive overeating is a common, disabling feature of eating disorders. Calcium imaging using fiber photometry has emerged as an in vivo methodology to measure neuronal population activity immune to electrical stimulation artifact from deep brain stimulation (DBS). Thus, when used simultaneously, calcium imaging can elucidate poorly understood DBS mechanisms. We show that nucleus accumbens D1 medial spiny calcium signaling increases in preparation of hedonic feeding of high-fat food. Further, responsive, over continuous, DBS strategies effectively disrupt this activity leading to decreased consumption. Implementation of this methodology to better understand mechanisms of these and other forms of neuromodulation for various indications may help advance the field to identify novel therapeutic targets with applications extending beyond obesity. Impulsive overeating is a common, disabling feature of eating disorders. Both continuous deep brain stimulation (DBS) and responsive DBS, which limits current delivery to pathological brain states, have emerged as potential therapies. We used in vivo fiber photometry in wild-type, Drd1-cre, and A2a-cre mice to 1) assay subtype-specific medium spiny neuron (MSN) activity of the nucleus accumbens (NAc) during hedonic feeding of high-fat food, and 2) examine DBS strategy-specific effects on NAc activity. D1, but not D2, NAc GCaMP activity increased immediately prior to high-fat food approach. Responsive DBS triggered a GCaMP surge throughout the stimulation period and durably reduced high-fat intake. However, with continuous DBS, this surge decayed, and high-fat intake reemerged. Our results argue for a stimulation strategy-dependent modulation of D1 MSNs with a more sustained decrease in consumption with responsive DBS. This study illustrates the important role in vivo imaging can play in understanding effects of such novel therapies.
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Unlucky punches: the vulnerability-stress model for the development of impulse control disorders in Parkinson's disease. NPJ Parkinsons Dis 2021; 7:112. [PMID: 34880241 PMCID: PMC8654901 DOI: 10.1038/s41531-021-00253-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 11/04/2021] [Indexed: 01/09/2023] Open
Abstract
Impulse-control disorders are commonly observed during dopamine-replacement therapy in Parkinson’s disease, but the majority of patients seems “immune” to this side effect. Epidemiological evidence suggests that a major risk factor may be a specific difference in the layout of the dopaminergic-reinforcement system, of which the ventral striatum is a central player. A series of imaging studies of the dopaminergic system point toward a presynaptic reduction of dopamine-reuptake transporter density and dopamine synthesis capacity. Here, we review current evidence for a vulnerability-stress model in which a relative reduction of dopaminergic projections to the ventral striatum and concomitant sensitization of postsynaptic neurons represent a predisposing (hypodopaminergic) vulnerability. Stress (hyperdopaminergic) is delivered when dopamine replacement therapy leads to a relative overdosing of the already-sensitized ventral striatum. These alterations are consistent with consecutive changes in reinforcement mechanisms, which stimulate learning from reward and impede learning from punishment, thereby fostering the development of impulse-control disorders. This vulnerability-stress model might also provide important insights into the development of addictions in the non-Parkinsonian population.
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Lee D, Seo J, Jeong HC, Lee H, Lee SB. The Perspectives of Early Diagnosis of Schizophrenia Through the Detection of Epigenomics-Based Biomarkers in iPSC-Derived Neurons. Front Mol Neurosci 2021; 14:756613. [PMID: 34867186 PMCID: PMC8633873 DOI: 10.3389/fnmol.2021.756613] [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: 08/10/2021] [Accepted: 10/20/2021] [Indexed: 12/11/2022] Open
Abstract
The lack of early diagnostic biomarkers for schizophrenia greatly limits treatment options that deliver therapeutic agents to affected cells at a timely manner. While previous schizophrenia biomarker research has identified various biological signals that are correlated with certain diseases, their reliability and practicality as an early diagnostic tool remains unclear. In this article, we discuss the use of atypical epigenetic and/or consequent transcriptional alterations (ETAs) as biomarkers of early-stage schizophrenia. Furthermore, we review the viability of discovering and applying these biomarkers through the use of cutting-edge technologies such as human induced pluripotent stem cell (iPSC)-derived neurons, brain models, and single-cell level analyses.
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Affiliation(s)
- Davin Lee
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
| | - Jinsoo Seo
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
| | - Hae Chan Jeong
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
| | - Hyosang Lee
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
| | - Sung Bae Lee
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
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Hall A, Weaver SR, Compton LJ, Byblow WD, Jenkinson N, MacDonald HJ. Dopamine genetic risk score predicts impulse control behaviors in Parkinson's disease. Clin Park Relat Disord 2021; 5:100113. [PMID: 34765965 PMCID: PMC8569744 DOI: 10.1016/j.prdoa.2021.100113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/09/2021] [Accepted: 10/20/2021] [Indexed: 10/26/2022] Open
Abstract
INTRODUCTION Up to 40% of Parkinson's disease patients taking dopamine agonist medication develop impulse control behaviors which can have severe negative consequences. The current study aimed to utilize dopamine genetics to identify patients most at risk of developing these behaviors. METHODS Demographic, clinical, and genetic data were obtained from the Parkinson's Progression Markers Initiative for de novo patients (n = 327), patients taking dopamine agonists (n = 146), and healthy controls (n = 160). Impulsive behaviors were identified using the Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease. A dopamine genetic risk score was calculated for each patient according to polymorphisms in genes coding for dopamine D1, D2 and D3 receptors, and catechol-O-methyltransferase. A higher score reflected higher central dopamine neurotransmission. RESULTS Patients on agonists with a low dopamine genetic risk score were over 18 times more likely to have an impulsive behavior compared to higher scores (p = 0.04). The 38% of patients taking agonists who had at least one impulsive behavior were more likely to be male and report higher Unified Parkinson's Disease Rating Scale I&II scores. With increasing time on dopamine agonists (range 92-2283 days, mean 798 ± 565 standard deviation), only patients with a high dopamine genetic risk score showed an increase in number of impulsive behaviors (p = 0.033). Predictive effects of the gene score were not present in de novo or healthy control. CONCLUSIONS A dopamine genetic risk score can identify patients most at risk of developing impulsive behaviors on dopamine agonist medication and predict how these behaviors may worsen over time.
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Affiliation(s)
- Alison Hall
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
| | - Samuel R. Weaver
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
| | | | - Winston D. Byblow
- Department of Exercise Sciences, University of Auckland, Auckland, New Zealand
- Centre for Brain Research, University of Auckland, Auckland, New Zealand
| | - Ned Jenkinson
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
| | - Hayley J. MacDonald
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
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Oxytocin, Erectile Function and Sexual Behavior: Last Discoveries and Possible Advances. Int J Mol Sci 2021; 22:ijms221910376. [PMID: 34638719 PMCID: PMC8509000 DOI: 10.3390/ijms221910376] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/20/2021] [Accepted: 09/23/2021] [Indexed: 12/30/2022] Open
Abstract
A continuously increasing amount of research shows that oxytocin is involved in numerous central functions. Among the functions in which oxytocin is thought to be involved are those that play a role in social and sexual behaviors, and the involvement of central oxytocin in erectile function and sexual behavior was indeed one of the first to be discovered in laboratory animals in the 1980s. The first part of this review summarizes the results of studies done in laboratory animals that support a facilitatory role of oxytocin in male and female sexual behavior and reveal mechanisms through which this ancient neuropeptide participates in concert with other neurotransmitters and neuropeptides in this complex function, which is fundamental for the species reproduction. The second part summarizes the results of studies done mainly with intranasal oxytocin in men and women with the aim to translate the results found in laboratory animals to humans. Unexpectedly, the results of these studies do not appear to confirm the facilitatory role of oxytocin found in male and female sexual behavior in animals, both in men and women. Possible explanations for the failure of oxytocin to improve sexual behavior in men and women and strategies to attempt to overcome this impasse are considered.
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Covey DP, Yocky AG. Endocannabinoid Modulation of Nucleus Accumbens Microcircuitry and Terminal Dopamine Release. Front Synaptic Neurosci 2021; 13:734975. [PMID: 34497503 PMCID: PMC8419321 DOI: 10.3389/fnsyn.2021.734975] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/05/2021] [Indexed: 12/20/2022] Open
Abstract
The nucleus accumbens (NAc) is located in the ventromedial portion of the striatum and is vital to valence-based predictions and motivated action. The neural architecture of the NAc allows for complex interactions between various cell types that filter incoming and outgoing information. Dopamine (DA) input serves a crucial role in modulating NAc function, but the mechanisms that control terminal DA release and its effect on NAc neurons continues to be elucidated. The endocannabinoid (eCB) system has emerged as an important filter of neural circuitry within the NAc that locally shapes terminal DA release through various cell type- and site-specific actions. Here, we will discuss how eCB signaling modulates terminal DA release by shaping the activity patterns of NAc neurons and their afferent inputs. We then discuss recent technological advancements that are capable of dissecting how distinct cell types, their afferent projections, and local neuromodulators influence valence-based actions.
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Affiliation(s)
- Dan P Covey
- Department of Neuroscience, Lovelace Biomedical Research Institute, Albuquerque, NM, United States
| | - Alyssa G Yocky
- Department of Neuroscience, Lovelace Biomedical Research Institute, Albuquerque, NM, United States
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Ventral pallidum regulates the default mode network, controlling transitions between internally and externally guided behavior. Proc Natl Acad Sci U S A 2021; 118:2103642118. [PMID: 34462351 DOI: 10.1073/pnas.2103642118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Daily life requires transitions between performance of well-practiced, automatized behaviors reliant upon internalized representations and behaviors requiring external focus. Such transitions involve differential activation of the default mode network (DMN), a group of brain areas associated with inward focus. We asked how optogenetic modulation of the ventral pallidum (VP), a subcortical DMN node, impacts task switching between internally to externally guided lever-pressing behavior in the rat. Excitation of the VP dramatically compromised acquisition of an auditory discrimination task, trapping animals in a DMN state of automatized internally focused behavior and impairing their ability to direct attention to external sensory stimuli. VP inhibition, on the other hand, facilitated task acquisition, expediting escape from the DMN brain state, thereby allowing rats to incorporate the contingency changes associated with the auditory stimuli. We suggest that VP, instant by instant, regulates the DMN and plays a deterministic role in transitions between internally and externally guided behaviors.
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Kale RP, Nguyen TTL, Price JB, Yates NJ, Walder K, Berk M, Sillitoe RV, Kouzani AZ, Tye SJ. Mood Regulatory Actions of Active and Sham Nucleus Accumbens Deep Brain Stimulation in Antidepressant Resistant Rats. Front Hum Neurosci 2021; 15:644921. [PMID: 34349629 PMCID: PMC8326323 DOI: 10.3389/fnhum.2021.644921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 06/08/2021] [Indexed: 11/13/2022] Open
Abstract
The antidepressant actions of deep brain stimulation (DBS) are associated with progressive neuroadaptations within the mood network, modulated in part, by neurotrophic mechanisms. We investigated the antidepressant-like effects of chronic nucleus accumbens (NAc) DBS and its association with change in glycogen synthase kinase 3 (GSK3) and mammalian target of rapamycin (mTOR) expression in the infralimbic cortex (IL), and the dorsal (dHIP) and ventral (vHIP) subregions of the hippocampus of antidepressant resistant rats. Antidepressant resistance was induced via daily injection of adrenocorticotropic hormone (ACTH; 100 μg/day; 15 days) and confirmed by non-response to tricyclic antidepressant treatment (imipramine, 10 mg/kg). Portable microdevices provided continuous bilateral NAc DBS (130 Hz, 200 μA, 90 μs) for 7 days. A control sham electrode group was included, together with ACTH- and saline-treated control groups. Home cage monitoring, open field, sucrose preference, and, forced swim behavioral tests were performed. Post-mortem levels of GSK3 and mTOR, total and phosphorylated, were determined with Western blot. As previously reported, ACTH treatment blocked the immobility-reducing effects of imipramine in the forced swim test. In contrast, treatment with either active DBS or sham electrode placement in the NAc significantly reduced forced swim immobility time in ACTH-treated animals. This was associated with increased homecage activity in the DBS and sham groups relative to ACTH and saline groups, however, no differences in locomotor activity were observed in the open field test, nor were any group differences seen for sucrose consumption across groups. The antidepressant-like actions of NAc DBS and sham electrode placements were associated with an increase in levels of IL and vHIP phospho-GSK3β and phospho-mTOR, however, no differences in these protein levels were observed in the dHIP region. These data suggest that early response to electrode placement in the NAc, irrespective of whether active DBS or sham, has antidepressant-like effects in the ACTH-model of antidepressant resistance associated with distal upregulation of phospho-GSK3β and phospho-mTOR in the IL and vHIP regions of the mood network.
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Affiliation(s)
- Rajas P. Kale
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, United States
- School of Engineering, Deakin University, Geelong, VIC, Australia
| | - Thanh Thanh L. Nguyen
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, United States
- Department of Biology and Psychology, Green Mountain College, Poultney, VT, United States
| | - J. Blair Price
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, United States
- Department of Neurosurgery Research, Mayo Clinic, Rochester, MN, United States
| | - Nathanael J. Yates
- Queensland Brain Institute, The University of Queensland, St Lucia, QLD, Australia
| | - Ken Walder
- Centre for Molecular and Medical Research, School of Medicine, Deakin University, Waurn Ponds, VIC, Australia
| | - Michael Berk
- IMPACT–The Institute for Mental and Physical Health and Clinical Translation, Barwon Health, Deakin University, Geelong, VIC, Australia
- Orygen Youth Health Research Centre, The Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Roy V. Sillitoe
- Department of Pathology and Immunology, Department of Neuroscience, Baylor College of Medicine, Houston, TX, United States
- Jan and Dan Duncan Neurological Research Institute, Texas Children’s Hospital, Houston, TX, United States
| | - Abbas Z. Kouzani
- School of Engineering, Deakin University, Geelong, VIC, Australia
| | - Susannah J. Tye
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, United States
- Queensland Brain Institute, The University of Queensland, St Lucia, QLD, Australia
- Department of Psychiatry, University of Minnesota, Houston, TX, United States
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, United States
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Gan C, Wang L, Ji M, Ma K, Sun H, Zhang K, Yuan Y. Abnormal interhemispheric resting state functional connectivity in Parkinson's disease patients with impulse control disorders. NPJ PARKINSONS DISEASE 2021; 7:60. [PMID: 34272398 PMCID: PMC8285494 DOI: 10.1038/s41531-021-00205-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/22/2021] [Indexed: 01/13/2023]
Abstract
Impulse control disorders (ICD) in Parkinson’s disease (PD) might be attributed to misestimate of rewards or the failure to curb inappropriate choices. The mechanisms underlying ICD were reported to involve the lateralization of monoamine network. Our objective was to probe the significant role of lateralization in the pathogenesis of ICD. Twenty-one PD patients with ICD (PD-ICD), thirty-three without ICD (PD-no ICD), and thirty-seven healthy controls (HCs) were recruited and performed T1-weighted, diffusion tensor imaging (DTI) scans and resting state functional magnetic resonance imaging (rs-fMRI). By applying the Voxel-mirrored Homotopic Connectivity (VMHC) and Freesurfer, we evaluated participants’ synchronicity of functional connectivity and structural changes between hemispheres. Also, tract-based spatial statistics (TBSS) was applied to compare fiber tracts differences. Relative to PD-no ICD group, PD-ICD group demonstrated reduced VMHC values in middle frontal gyrus (MFG). Compared to HCs, PD-ICD group mainly showed decreased VMHC values in MFG, middle and superior orbital frontal gyrus (OFG), inferior frontal gyrus (IFG) and caudate, which were related to reward processing and inhibitory control. The severity of impulsivity was negatively correlated with the mean VMHC values of MFG in PD-ICD group. Receiver operating characteristic (ROC) curves analyses uncovered that the mean VMHC values of MFG might be a potential marker identifying PD-ICD patients. However, we found no corresponding asymmetrical alteration in cortical thickness and no significant differences in fractional anisotropy (FA) and mean diffusivity (MD). Our results provided further evidence for asymmetry of functional connectivity in mesolimbic reward and response inhibition network in ICD.
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Affiliation(s)
- Caiting Gan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lina Wang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Min Ji
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kewei Ma
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huimin Sun
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kezhong Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Yongsheng Yuan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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46
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Sakaki K, Nozawa T, Ikeda S, Kawashima R. Neural correlates of cognitive bias modification for interpretation. Soc Cogn Affect Neurosci 2021; 15:247-260. [PMID: 32322880 PMCID: PMC7304515 DOI: 10.1093/scan/nsaa026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/31/2019] [Accepted: 03/06/2020] [Indexed: 11/30/2022] Open
Abstract
The effectiveness of cognitive bias modification for interpretation (CBM-I), a treatment method employed to reduce social anxiety (SA), has been examined. However, the neural correlates of CBM-I remain unclear, and we aimed to elucidate brain activities during intervention and activity changes associated with CBM-I effectiveness in a pre–post intervention comparison. Healthy participants divided into two groups (CBM, control) were scanned before, during and after intervention using functional magnetic resonance imaging. Ambiguous social situations followed by positive outcomes were repeatedly imagined by the CBM group during intervention, while half of the outcomes in the control group were negative. Whole-brain analysis revealed that activation of the somatomotor and somatosensory areas, occipital lobe, fusiform gyrus and thalamus during intervention was significantly greater in the CBM than in the control group. Furthermore, altered activities in the somatomotor and somatosensory areas, occipital lobe and posterior cingulate gyrus during interpreting ambiguous social situations showed a significant group × change in SA interaction. Our result suggests that when facing ambiguous social situations, positive imagery instilled by CBM-I is recalled, and interpretations are modified to contain social reward. These findings may help to suggest an alternative manner of enhancing CBM-I effectiveness from a cognitive-neuroscience perspective.
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Affiliation(s)
- Kohei Sakaki
- Department of Functional Brain Imaging, Graduate School of Medicine, Tohoku University, Sendai 980-8575, Japan.,Division for Interdisciplinary Advanced Research and Education, Tohoku University, Sendai 980-8578, Japan.,Japan Society for the Promotion of Science, Tokyo 102-0083, Japan
| | - Takayuki Nozawa
- Research Institute for the Earth Inclusive Sensing Empathizing with Silent Voices, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Shigeyuki Ikeda
- Department of Ubiquitous Sensing, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan
| | - Ryuta Kawashima
- Department of Ubiquitous Sensing, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan.,Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan
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Lasley SM, Fornal CA, Mandal S, Strupp BJ, Beaudin SA, Smith DR. Early Postnatal Manganese Exposure Reduces Rat Cortical and Striatal Biogenic Amine Activity in Adulthood. Toxicol Sci 2021; 173:144-155. [PMID: 31560393 DOI: 10.1093/toxsci/kfz208] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Growing evidence from studies with children and animal models suggests that elevated levels of manganese during early development lead to lasting cognitive and fine motor deficits. This study was performed to assess presynaptic biogenic amine function in forebrain of adult Long-Evans rats exposed orally to 0, 25, or 50 mg Mn/kg/day over postnatal day 1-21 or continuously from birth to the end of the study (approximately postnatal day 500). Intracerebral microdialysis in awake rats quantified evoked outflow of biogenic amines in the right medial prefrontal cortex and left striatum. Results indicated that brain manganese levels in the early life exposed groups (postnatal day 24) largely returned to control levels by postnatal day 66, whereas levels in the lifelong exposed groups remained elevated 10%-20% compared with controls at the same ages. Manganese exposure restricted to the early postnatal period caused lasting reductions in cortical potassium-stimulated extracellular norepinephrine, dopamine, and serotonin, and reductions in striatal extracellular dopamine. Lifelong manganese exposure produced similar effects with the addition of significant decreases in cortical dopamine that were not evident in the early postnatal exposed groups. These results indicate that early postnatal manganese exposure produces persistent deficits in cortical and striatal biogenic amine function. Given that these same animals exhibited lasting impairments in attention and fine motor function, these findings suggest that reductions in catecholaminergic activity are a primary factor underlying the behavioral effects caused by manganese, and indicate that children exposed to elevated levels of manganese during early development are at the greatest risk for neuronal deficiencies that persist into adulthood.
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Affiliation(s)
- Stephen M Lasley
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine Peoria, Peoria, Illinois 61605
| | - Casimir A Fornal
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine Peoria, Peoria, Illinois 61605
| | - Shyamali Mandal
- Business Development, BioVision Inc, Milpitas, California 95035
| | - Barbara J Strupp
- Division of Nutritional Sciences and Department of Psychology, Cornell University, Ithaca, New York 14853
| | - Stephane A Beaudin
- Department of Psychology and Cognitive Science, University of California Merced, Merced, California 95340
| | - Donald R Smith
- Department of Microbiology and Environmental Toxicology, University of California - Santa Cruz, Santa Cruz, California 95064
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Althobaiti YS, Almutairi FM, Alshehri FS, Altowairqi E, Marghalani AM, Alghorabi AA, Alsanie WF, Gaber A, Alsaab HO, Almalki AH, Hakami AY, Alkhalifa T, Almalki AD, Hardy AMG, Shah ZA. Involvement of the dopaminergic system in the reward-related behavior of pregabalin. Sci Rep 2021; 11:10577. [PMID: 34011976 PMCID: PMC8134490 DOI: 10.1038/s41598-021-88429-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 04/08/2021] [Indexed: 01/23/2023] Open
Abstract
There has been an increase in cases of drug addiction and prescription drug abuse worldwide. Recently, pregabalin abuse has been a focus for many healthcare agencies, as highlighted by epidemiological studies. We previously evaluated the possibility of pregabalin abuse using the conditioned place preference (CPP) paradigm. We observed that a 60 mg/kg dose could induce CPP in mice and that pregabalin-rewarding properties were mediated through glutamate neurotransmission. Notably, the dopaminergic reward circuitry is also known to play a crucial role in medication-seeking behavior. Therefore, this study aimed to explore the possible involvement of dopaminergic receptor-1 in pregabalin-induced CPP. Mice were randomly allocated to receive saline or the dopamine-1 receptor antagonist SKF-83566 (0.03 mg/kg, intraperitoneal). After 30 min, the mice received either saline or pregabalin (60 mg/kg) during the conditioning phase. Among the control groups that received saline or SKF-83566, the time spent in the two conditioning chambers was not significantly altered. However, among the pregabalin-treated group, there was a marked increase in the time spent in the drug-paired chamber compared to the time spent in the vehicle-paired chamber. Notably, blocking dopamine-1 receptors with SKF-83566 completely prevented pregabalin-induced place preference, thus demonstrating the engagement of the dopaminergic system in pregabalin-induced reward-related behavior.
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Affiliation(s)
- Yusuf S Althobaiti
- Department of Pharmacology and Toxicology, College of Pharmacy, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
- General Administration for Precursors and Laboratories, General Directorate of Narcotics Control, Ministry of Interior, Riyadh, Saudi Arabia.
| | - Farooq M Almutairi
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
- Deanship of Scientific Research, Taif University, Taif, 21944, Saudi Arabia
- Department of Clinical Laboratories Sciences, University of Hafar Al-Batin, College of Clinical Laboratories Sciences, Hafar Al-Batin, 39923, Saudi Arabia
| | - Fahad S Alshehri
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Ebtehal Altowairqi
- Department of Pharmacology and Toxicology, College of Pharmacy, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Aliyah M Marghalani
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Amal A Alghorabi
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Walaa F Alsanie
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, 21944, Saudi Arabia
| | - Ahmed Gaber
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
- Department of Biology, Faculty of Science, Taif University, Taif, 21944, Saudi Arabia
| | - Hashem O Alsaab
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
- Department of Pharmaceutics and Pharmaceutical Technology, Taif University, Taif, 21944, Saudi Arabia
| | - Atiah H Almalki
- Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Alqassem Y Hakami
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
- King Abdullah International Medical Research Center, Jeddah, Saudi Arabia
| | - Turki Alkhalifa
- General Administration for Precursors and Laboratories, General Directorate of Narcotics Control, Ministry of Interior, Riyadh, Saudi Arabia
| | - Ahmad D Almalki
- General Administration for Precursors and Laboratories, General Directorate of Narcotics Control, Ministry of Interior, Riyadh, Saudi Arabia
| | - Ana M G Hardy
- Department of Physiology and Pharmacology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA
| | - Zahoor A Shah
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, USA
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Parkin regulates drug-taking behavior in rat model of methamphetamine use disorder. Transl Psychiatry 2021; 11:293. [PMID: 34001858 PMCID: PMC8129108 DOI: 10.1038/s41398-021-01387-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 03/25/2021] [Accepted: 04/14/2021] [Indexed: 01/02/2023] Open
Abstract
There is no FDA-approved medication for methamphetamine (METH) use disorder. New therapeutic approaches are needed, especially for people who use METH heavily and are at high risk for overdose. This study used genetically engineered rats to evaluate PARKIN as a potential target for METH use disorder. PARKIN knockout, PARKIN-overexpressing, and wild-type young adult male Long Evans rats were trained to self-administer high doses of METH using an extended-access METH self-administration paradigm. Reinforcing/rewarding properties of METH were assessed by quantifying drug-taking behavior and time spent in a METH-paired environment. PARKIN knockout rats self-administered more METH and spent more time in the METH-paired environment than wild-type rats. Wild-type rats overexpressing PARKIN self-administered less METH and spent less time in the METH-paired environment. PARKIN knockout rats overexpressing PARKIN self-administered less METH during the first half of drug self-administration days than PARKIN-deficient rats. The results indicate that rats with PARKIN excess or PARKIN deficit are useful models for studying neural substrates underlying "resilience" or vulnerability to METH use disorder and identify PARKIN as a novel potential drug target to treat heavy use of METH.
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50
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Cataldi S, Stanley AT, Miniaci MC, Sulzer D. Interpreting the role of the striatum during multiple phases of motor learning. FEBS J 2021; 289:2263-2281. [PMID: 33977645 DOI: 10.1111/febs.15908] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/28/2021] [Accepted: 04/30/2021] [Indexed: 01/11/2023]
Abstract
The synaptic pathways in the striatum are central to basal ganglia functions including motor control, learning and organization, action selection, acquisition of motor skills, cognitive function, and emotion. Here, we review the role of the striatum and its connections in motor learning and performance. The development of new techniques to record neuronal activity and animal models of motor disorders using neurotoxin, pharmacological, and genetic manipulations are revealing pathways that underlie motor performance and motor learning, as well as how they are altered by pathophysiological mechanisms. We discuss approaches that can be used to analyze complex motor skills, particularly in rodents, and identify specific questions central to understanding how striatal circuits mediate motor learning.
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Affiliation(s)
- Stefano Cataldi
- Departments of Psychiatry, Neurology, Pharmacology, Biology, Columbia University, New York, NY, USA.,Division of Molecular Therapeutics, New York State Psychiatric Institute, NY, USA
| | - Adrien T Stanley
- Departments of Psychiatry, Neurology, Pharmacology, Biology, Columbia University, New York, NY, USA.,Division of Molecular Therapeutics, New York State Psychiatric Institute, NY, USA
| | | | - David Sulzer
- Departments of Psychiatry, Neurology, Pharmacology, Biology, Columbia University, New York, NY, USA.,Division of Molecular Therapeutics, New York State Psychiatric Institute, NY, USA
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