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Wakeford AGP, Nye JA, Morin EL, Mun J, Meyer JS, Goodman M, Howell LL, Sanchez MM. Alterations in adolescent brain serotonin (5HT) 1A, 5HT 2A, and dopamine (D) 2 receptor systems in a nonhuman primate model of early life adversity. Neuropsychopharmacology 2024; 49:1227-1235. [PMID: 38671147 PMCID: PMC11224234 DOI: 10.1038/s41386-023-01784-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/30/2023] [Accepted: 12/04/2023] [Indexed: 04/28/2024]
Abstract
Stress affects brain serotonin (5HT) and dopamine (DA) function, and the effectiveness of 5HT and DA to regulate stress and emotional responses. However, our understanding of the long-term impact of early life adversity (ELA) on primate brain monoaminergic systems during adolescence is scarce and inconsistent. Filling this gap in the literature is critical, given that the emergence of psychopathology during adolescence has been related to deficits in these systems. Here, we use a translational nonhuman primate (NHP) model of ELA (infant maltreatment by the mother) to examine the long-term impact of ELA on adolescent 5HT1A, 5HT2A and D2 receptor systems. These receptor systems were chosen based on their involvement in stress/emotional control, as well as reward and reinforcement. Rates of maternal abuse, rejection, and infant's vocalizations were obtained during the first three postnatal months, and hair cortisol concentrations obtained at 6 months postnatal were examined as early predictors of binding potential (BP) values obtained during adolescence using positron emission tomography (PET) imaging. Maltreated animals demonstrated significantly lower 5HT1A receptor BP in prefrontal cortical areas as well as the amygdala and hippocampus, and lower 5HT2A receptor BP in striatal and prefrontal cortical areas. Maltreated animals also demonstrated significantly lower D2 BP in the amygdala. None of the behavioral and neuroendocrine measurements obtained early in life predicted any changes in BP data. Our findings suggest that early caregiving experiences regulate the development of brain 5HT and DA systems in primates, resulting in long-term effects evident during adolescence.
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Affiliation(s)
- Alison G P Wakeford
- Division of Neuropharmacology and Neurologic Diseases, Emory National Primate Research Center, Emory University, 954 Gatewood Rd NE, Atlanta, GA, 30329, USA
- Department of Psychiatry & Behavioral Sciences, Emory University, 12 Executive Park Dr NE #200, Atlanta, GA, 30329, USA
| | - Jonathon A Nye
- Department of Radiology and Imaging Sciences, Emory University, 1364 Clifton Rd. NE, Atlanta, GA, 30329, USA
| | - Elyse L Morin
- Department of Psychiatry & Behavioral Sciences, Emory University, 12 Executive Park Dr NE #200, Atlanta, GA, 30329, USA
- Division of Developmental and Cognitive Neuroscience, Emory National Primate Research Center, Emory University, 954 Gatewood Rd NE, Atlanta, GA, 30329, USA
| | - Jiyoung Mun
- Department of Radiology and Imaging Sciences, Emory University, 1364 Clifton Rd. NE, Atlanta, GA, 30329, USA
| | - Jerrold S Meyer
- Department of Psychological & Brain Sciences, University of Massachusetts, 441 Tobin Hall, Amherst, MA, 01003, USA
| | - Mark Goodman
- Department of Radiology and Imaging Sciences, Emory University, 1364 Clifton Rd. NE, Atlanta, GA, 30329, USA
| | - Leonard L Howell
- Division of Neuropharmacology and Neurologic Diseases, Emory National Primate Research Center, Emory University, 954 Gatewood Rd NE, Atlanta, GA, 30329, USA
- Department of Psychiatry & Behavioral Sciences, Emory University, 12 Executive Park Dr NE #200, Atlanta, GA, 30329, USA
| | - Mar M Sanchez
- Department of Psychiatry & Behavioral Sciences, Emory University, 12 Executive Park Dr NE #200, Atlanta, GA, 30329, USA.
- Division of Developmental and Cognitive Neuroscience, Emory National Primate Research Center, Emory University, 954 Gatewood Rd NE, Atlanta, GA, 30329, USA.
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Canzian J, Borba JV, Ames J, Silva RM, Resmim CM, Pretzel CW, Duarte MCF, Storck TR, Mohammed KA, Adedara IA, Loro VL, Gerlai R, Rosemberg DB. The influence of acute dopamine transporter inhibition on manic-, depressive-like phenotypes, and brain oxidative status in adult zebrafish. Prog Neuropsychopharmacol Biol Psychiatry 2024; 131:110961. [PMID: 38325745 DOI: 10.1016/j.pnpbp.2024.110961] [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: 10/31/2023] [Revised: 02/03/2024] [Accepted: 02/04/2024] [Indexed: 02/09/2024]
Abstract
Functional changes in dopamine transporter (DAT) are related to various psychiatric conditions, including bipolar disorder (BD) symptoms. In experimental research, the inhibition of DAT induces behavioral alterations that recapitulate symptoms found in BD patients, including mania and depressive mood. Thus, developing novel animal models that mimic BD-related conditions by pharmacologically modulating the dopaminergic signaling is relevant. The zebrafish (Danio rerio) has been considered a suitable vertebrate system for modeling BD-like responses, due to the well-characterized behavioral responses and evolutionarily conservation of the dopaminergic system of this species. Here, we investigate whether GBR 12909, a selective inhibitor of DAT, causes neurobehavioral alterations in zebrafish similar to those observed in BD patients. Behaviors were recorded after a single intraperitoneal (i.p.) administration of GBR 12909 at different doses (3.75, 7.5, 15 and 30 mg/kg). To observe temporal effects on behavior, swim path parameters were measured immediately after the administration period during 30 min. Locomotion, anxiety-like behavior, social preference, aggression, despair-like behavior, and oxidative stress-related biomarkers in the brain were measured 30 min post administration. GBR 12909 induced prominent effects on locomotor activity and vertical exploration during the 30-min period. Hyperactivity was observed in GBR 30 group after 25 min, while all doses markedly reduced vertical drifts. GBR 12909 elicited hyperlocomotion, anxiety-like behavior, decreased social preference, aggression, and induced depressive-like behavior in a behavioral despair task. Depending on the dose, GBR 12909 also decreased SOD activity and TBARS levels, as well as increased GR activity and NPSH content. Collectively, our novel findings show that a single GBR 12909 administration evokes neurobehavioral changes that recapitulate manic- and depressive-like states observed in rodents, fostering the use of zebrafish models to explore BD-like responses in translational neuroscience research.
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Affiliation(s)
- Julia Canzian
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil.
| | - João V Borba
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Jaíne Ames
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Laboratory of Aquatic Toxicology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Rossano M Silva
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Cássio M Resmim
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Camilla W Pretzel
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Maria Cecília F Duarte
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Tamiris R Storck
- Graduate Program in Environmental Engineering, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Khadija A Mohammed
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Isaac A Adedara
- Department of Food Science and Technology, Center of Rural Sciences, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil
| | - Vania L Loro
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Laboratory of Aquatic Toxicology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Robert Gerlai
- Department of Psychology, University of Toronto Mississauga, Mississauga, ON, Canada; Department of Cell and System Biology, University of Toronto, Toronto, ON, Canada
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA 70458, USA.
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3
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Sartori SB, Keil TMV, Kummer KK, Murphy CP, Gunduz-Cinar O, Kress M, Ebner K, Holmes A, Singewald N. Fear extinction rescuing effects of dopamine and L-DOPA in the ventromedial prefrontal cortex. Transl Psychiatry 2024; 14:11. [PMID: 38191458 PMCID: PMC10774374 DOI: 10.1038/s41398-023-02708-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 01/10/2024] Open
Abstract
The ventromedial prefrontal cortex (vmPFC; rodent infralimbic cortex (IL)), is posited to be an important locus of fear extinction-facilitating effects of the dopamine (DA) bio-precursor, L-DOPA, but this hypothesis remains to be formally tested. Here, in a model of impaired fear extinction (the 129S1/SvImJ inbred mouse strain; S1), we monitored extracellular DA dynamics via in vivo microdialysis in IL during fear extinction and following L-DOPA administration. Systemic L-DOPA caused sustained elevation of extracellular DA levels in IL and increased neuronal activation in a subpopulation of IL neurons. Systemic L-DOPA enabled extinction learning and promoted extinction retention at one but not ten days after training. Conversely, direct microinfusion of DA into IL produced long-term fear extinction (an effect that was insensitive to ɑ-/ß-adrenoreceptor antagonism). However, intra-IL delivery of a D1-like or D2 receptor agonist did not facilitate extinction. Using ex vivo multi-electrode array IL neuronal recordings, along with ex vivo quantification of immediate early genes and DA receptor signalling markers in mPFC, we found evidence of reduced DA-evoked mPFC network responses in S1 as compared with extinction-competent C57BL/6J mice that were partially driven by D1 receptor activation. Together, our data demonstrate that locally increasing DA in IL is sufficient to produce lasting rescue of impaired extinction. The finding that systemic L-DOPA increased IL DA levels, but had only transient effects on extinction, suggests L-DOPA failed to reach a threshold level of IL DA or produced opposing behavioural effects in other brain regions. Collectively, our findings provide further insight into the neural basis of the extinction-promoting effects of DA and L-DOPA in a clinically relevant animal model, with possible implications for therapeutically targeting the DA system in anxiety and trauma-related disorders.
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Affiliation(s)
- Simone B Sartori
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Thomas M V Keil
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Kai K Kummer
- Institute of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Conor P Murphy
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Ozge Gunduz-Cinar
- Laboratory of Behavioral and Genomic Neuroscience, NIH/NIAAA, Rockville, MD, USA
| | - Michaela Kress
- Institute of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Karl Ebner
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Andrew Holmes
- Laboratory of Behavioral and Genomic Neuroscience, NIH/NIAAA, Rockville, MD, USA
| | - Nicolas Singewald
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria.
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Liu J, Xie S, Hu Y, Ding Y, Zhang X, Liu W, Zhang L, Ma C, Kang Y, Jin S, Xia Y, Hu Z, Liu Z, Cheng W, Yang Z. Age-dependent alterations in the coordinated development of subcortical regions in adolescents with social anxiety disorder. Eur Child Adolesc Psychiatry 2024; 33:51-64. [PMID: 36542201 DOI: 10.1007/s00787-022-02118-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022]
Abstract
Subcortical brain regions play essential roles in the pathology of social anxiety disorder (SAD). While adolescence is the peak period of SAD, the relationships between altered development of the subcortical regions during this period and SAD are still unclear. This study investigated the age-dependent alterations in structural co-variance among subcortical regions and between subcortical and cortical regions, aiming to reflect aberrant coordination during development in the adolescent with SAD. High-resolution T1-weighted images were obtained from 76 adolescents with SAD and 67 healthy controls (HC), ranging from 11 to 17.9 years. Symptom severity was evaluated with the Social Anxiety Scale for Children (SASC) and the Depression Self Rating Scale for Children (DSRS-C). Structural co-variance and sliding age-window analyses were used to detect age-dependent group differences in inter-regional coordination patterns among subcortical regions and between subcortical and cortical regions. The volume of the striatum significantly correlated with SAD symptom severity. The SAD group exhibited significantly enhanced structural co-variance among key regions of the striatum (putamen and caudate). While the co-variance decreased with age in healthy adolescents, the co-variance in SAD adolescents stayed high, leading to more apparent group differences in middle adolescence. Moreover, the striatum's mean structural co-variance with cortical regions decreased with age in HC but increased with age in SAD. Adolescents with SAD suffer aberrant developmental coordination among the key regions of the striatum and between the striatum and cortical regions. The degree of incoordination is age-dependent, which may represent a neurodevelopmental trait of SAD.
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Affiliation(s)
- Jingjing Liu
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Shuqi Xie
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Yang Hu
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Yue Ding
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Xiaochen Zhang
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Wenjing Liu
- Department of Child and Adolescent Psychiatry, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Lei Zhang
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Changminghao Ma
- Department of Child and Adolescent Psychiatry, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Yinzhi Kang
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Shuyu Jin
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Yufeng Xia
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Zhishan Hu
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Zhen Liu
- Department of Child and Adolescent Psychiatry, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China
| | - Wenhong Cheng
- Department of Child and Adolescent Psychiatry, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China.
| | - Zhi Yang
- Laboratory of Psychological Health and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, No. 600 South Wanping Road, Shanghai, 200013, China.
- Institute of Psychological and Behavioral Sciences, Shanghai Jiao Tong University, Shanghai, China.
- Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China.
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Saha R, Goyal A, Yuen J, Oh Y, Bloom RP, Benally OJ, Wu K, Netoff TI, Low WC, Bennet KE, Lee KH, Shin H, Wang JP. Micromagnetic Stimulation (μMS) Controls Dopamine Release: An in vivo Study Using WINCS Harmoni. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.25.542334. [PMID: 37292985 PMCID: PMC10246005 DOI: 10.1101/2023.05.25.542334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective Research into the role of neurotransmitters in regulating normal and pathologic brain functions has made significant progress. Yet, clinical trials that aim to improve therapeutic interventions do not take advantage of the in vivo changes in the neurochemistry that occur in real time during disease progression, drug interactions or response to pharmacological, cognitive, behavioral, and neuromodulation therapies. In this work, we used the WINCS Harmoni tool to study the real time in vivo changes in dopamine release in rodent brains for the micromagnetic neuromodulation therapy. Approach Although still in its infancy, micromagnetic stimulation (µMS) using micro-meter sized coils or microcoils (μcoils) has shown incredible promise in spatially selective, galvanic contact free and highly focal neuromodulation. These μcoils are powered by a time-varying current which generates a magnetic field. As per Faraday's Laws of Electromagnetic Induction, this magnetic field induces an electric field in a conducting medium (here, the brain tissues). We used a solenoidal-shaped μcoil to stimulate the medial forebrain bundle (MFB) of the rodent brain in vivo. The evoked in vivo dopamine releases in the striatum were tracked in real time by carbon fiber microelectrodes (CFM) using fast scan cyclic voltammetry (FSCV). Results Our experiments report that μcoils can successfully activate the MFB in rodent brains, triggering dopamine release in vivo. We further show that the successful release of dopamine upon micromagnetic stimulation is dependent on the orientation of the μcoil. Furthermore, varied intensities of µMS can control the concentration of dopamine releases in the striatum. Significance This work helps us better understand the brain and its conditions arising from a new therapeutic intervention, like µMS, at the level of neurotransmitter release. Despite its early stage, this study potentially paves the path for µMS to enter the clinical world as a precisely controlled and optimized neuromodulation therapy.
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Affiliation(s)
- Renata Saha
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Abhinav Goyal
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
- Medical Scientist Training Program, Mayo Clinic, Rochester, MN, United States
| | - Jason Yuen
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong VIC 3216, Australia
| | - Yoonbae Oh
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
- Department of Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
| | - Robert P. Bloom
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Onri J. Benally
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Kai Wu
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Theoden I. Netoff
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Walter C. Low
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN, United States
| | - Kevin E. Bennet
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
- Division of Engineering, Mayo Clinic, Rochester, MN, United States
| | - Kendall H. Lee
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
- Department of Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
| | - Hojin Shin
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, United States
- Department of Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
| | - Jian-Ping Wang
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States
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Caldiroli A, Capuzzi E, Affaticati LM, Surace T, Di Forti CL, Dakanalis A, Clerici M, Buoli M. Candidate Biological Markers for Social Anxiety Disorder: A Systematic Review. Int J Mol Sci 2023; 24:835. [PMID: 36614278 PMCID: PMC9821596 DOI: 10.3390/ijms24010835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/24/2022] [Accepted: 12/29/2022] [Indexed: 01/05/2023] Open
Abstract
Social anxiety disorder (SAD) is a common psychiatric condition associated with a high risk of psychiatric comorbidity and impaired social/occupational functioning when not promptly treated. The identification of biological markers may facilitate the diagnostic process, leading to an early and proper treatment. Our aim was to systematically review the available literature about potential biomarkers for SAD. A search in the main online repositories (PubMed, ISI Web of Knowledge, PsychInfo, etc.) was performed. Of the 662 records screened, 61 were included. Results concerning cortisol, neuropeptides and inflammatory/immunological/neurotrophic markers remain inconsistent. Preliminary evidence emerged about the role of chromosome 16 and the endomannosidase gene, as well as of epigenetic factors, in increasing vulnerability to SAD. Neuroimaging findings revealed an altered connectivity of different cerebral areas in SAD patients and amygdala activation under social threat. Some parameters such as salivary alpha amylase levels, changes in antioxidant defenses, increased gaze avoidance and QT dispersion seem to be associated with SAD and may represent promising biomarkers of this condition. However, the preliminary positive correlations have been poorly replicated. Further studies on larger samples and investigating the same biomarkers are needed to identify more specific biological markers for SAD.
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Affiliation(s)
- Alice Caldiroli
- Department of Mental Health and Addiction, Fondazione IRCCS San Gerardo dei Tintori, Via G.B. Pergolesi 33, 20900 Monza, Italy; (E.C.); (T.S.); (M.C.)
| | - Enrico Capuzzi
- Department of Mental Health and Addiction, Fondazione IRCCS San Gerardo dei Tintori, Via G.B. Pergolesi 33, 20900 Monza, Italy; (E.C.); (T.S.); (M.C.)
| | - Letizia M. Affaticati
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 38, 20900 Monza, Italy; (L.M.A.); (C.L.D.F.); (A.D.)
| | - Teresa Surace
- Department of Mental Health and Addiction, Fondazione IRCCS San Gerardo dei Tintori, Via G.B. Pergolesi 33, 20900 Monza, Italy; (E.C.); (T.S.); (M.C.)
| | - Carla L. Di Forti
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 38, 20900 Monza, Italy; (L.M.A.); (C.L.D.F.); (A.D.)
| | - Antonios Dakanalis
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 38, 20900 Monza, Italy; (L.M.A.); (C.L.D.F.); (A.D.)
| | - Massimo Clerici
- Department of Mental Health and Addiction, Fondazione IRCCS San Gerardo dei Tintori, Via G.B. Pergolesi 33, 20900 Monza, Italy; (E.C.); (T.S.); (M.C.)
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 38, 20900 Monza, Italy; (L.M.A.); (C.L.D.F.); (A.D.)
| | - Massimiliano Buoli
- Department of Pathophysiology and Transplantation, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy;
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milan, Italy
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7
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Juza R, Musilek K, Mezeiova E, Soukup O, Korabecny J. Recent advances in dopamine D 2 receptor ligands in the treatment of neuropsychiatric disorders. Med Res Rev 2023; 43:55-211. [PMID: 36111795 DOI: 10.1002/med.21923] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 07/29/2022] [Accepted: 08/09/2022] [Indexed: 02/04/2023]
Abstract
Dopamine is a biologically active amine synthesized in the central and peripheral nervous system. This biogenic monoamine acts by activating five types of dopamine receptors (D1-5 Rs), which belong to the G protein-coupled receptor family. Antagonists and partial agonists of D2 Rs are used to treat schizophrenia, Parkinson's disease, depression, and anxiety. The typical pharmacophore with high D2 R affinity comprises four main areas, namely aromatic moiety, cyclic amine, central linker and aromatic/heteroaromatic lipophilic fragment. From the literature reviewed herein, we can conclude that 4-(2,3-dichlorophenyl), 4-(2-methoxyphenyl)-, 4-(benzo[b]thiophen-4-yl)-1-substituted piperazine, and 4-(6-fluorobenzo[d]isoxazol-3-yl)piperidine moieties are critical for high D2 R affinity. Four to six atoms chains are optimal for D2 R affinity with 4-butoxyl as the most pronounced one. The bicyclic aromatic/heteroaromatic systems are most frequently occurring as lipophilic appendages to retain high D2 R affinity. In this review, we provide a thorough overview of the therapeutic potential of D2 R modulators in the treatment of the aforementioned disorders. In addition, this review summarizes current knowledge about these diseases, with a focus on the dopaminergic pathway underlying these pathologies. Major attention is paid to the structure, function, and pharmacology of novel D2 R ligands, which have been developed in the last decade (2010-2021), and belong to the 1,4-disubstituted aromatic cyclic amine group. Due to the abundance of data, allosteric D2 R ligands and D2 R modulators from patents are not discussed in this review.
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Affiliation(s)
- Radomir Juza
- Experimental Neurobiology, National Institute of Mental Health, Klecany, Czech Republic.,Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Musilek
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Eva Mezeiova
- Experimental Neurobiology, National Institute of Mental Health, Klecany, Czech Republic.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Jan Korabecny
- Experimental Neurobiology, National Institute of Mental Health, Klecany, Czech Republic.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
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8
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Tönsing D, Schiller B, Vehlen A, Spenthof I, Domes G, Heinrichs M. No evidence that gaze anxiety predicts gaze avoidance behavior during face-to-face social interaction. Sci Rep 2022; 12:21332. [PMID: 36494411 PMCID: PMC9734162 DOI: 10.1038/s41598-022-25189-z] [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: 07/14/2022] [Accepted: 11/25/2022] [Indexed: 12/13/2022] Open
Abstract
Eye contact is an indispensable social signal, yet for some individuals it is also a source of discomfort they fear and avoid. However, it is still unknown whether gaze anxiety actually produces avoidant gaze behavior in naturalistic, face-to-face interactions. Here, we relied on a novel dual eye-tracking setup that allows us to assess interactive gaze behavior. To investigate the effect of gaze anxiety on gaze behavior, we a priori created groups of participants reporting high or low levels of gaze anxiety. These participants (n = 51) then performed a semi-standardized interaction with a previously unknown individual reporting a medium level of gaze anxiety. The gaze behavior of both groups did not differ in either classical one-way, eye-tracking parameters (e.g. unilateral eye gaze), or interactive, two-way ones (e.g. mutual gaze). Furthermore, the subjective ratings of both participants' interaction did not differ between groups. Gaze anxious individuals seem to exhibit normal gaze behavior which does not hamper the perceived quality of interactions in a naturalistic face-to-face setup. Our findings point to the existence of cognitive distortions in gaze anxious individuals whose exterior behavior might be less affected than feared by their interior anxiety.
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Affiliation(s)
- Daniel Tönsing
- grid.5963.9Laboratory for Biological Psychology, Clinical Psychology and Psychotherapy, Department of Psychology, Albert-Ludwigs University of Freiburg, Stefan-Meier-Straße 8, 79104 Freiburg, Germany
| | - Bastian Schiller
- grid.5963.9Laboratory for Biological Psychology, Clinical Psychology and Psychotherapy, Department of Psychology, Albert-Ludwigs University of Freiburg, Stefan-Meier-Straße 8, 79104 Freiburg, Germany ,grid.5963.9Freiburg Brain Imaging Center, University Medical Center, Albert-Ludwigs University of Freiburg, Freiburg, Germany
| | - Antonia Vehlen
- grid.12391.380000 0001 2289 1527Department of Biological and Clinical Psychology, University of Trier, Trier, Germany
| | - Ines Spenthof
- grid.5963.9Laboratory for Biological Psychology, Clinical Psychology and Psychotherapy, Department of Psychology, Albert-Ludwigs University of Freiburg, Stefan-Meier-Straße 8, 79104 Freiburg, Germany
| | - Gregor Domes
- grid.12391.380000 0001 2289 1527Department of Biological and Clinical Psychology, University of Trier, Trier, Germany
| | - Markus Heinrichs
- grid.5963.9Laboratory for Biological Psychology, Clinical Psychology and Psychotherapy, Department of Psychology, Albert-Ludwigs University of Freiburg, Stefan-Meier-Straße 8, 79104 Freiburg, Germany ,grid.5963.9Freiburg Brain Imaging Center, University Medical Center, Albert-Ludwigs University of Freiburg, Freiburg, Germany
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9
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Fliegel DK, Lichenstein SD. Systematic literature review of human studies assessing the efficacy of cannabidiol for social anxiety. PSYCHIATRY RESEARCH COMMUNICATIONS 2022; 2:100074. [PMID: 36875967 PMCID: PMC9983614 DOI: 10.1016/j.psycom.2022.100074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
The current review evaluates the potential of cannabidiol (CBD) as a promising pharmacotherapy for social anxiety disorder (SAD). Although a number of evidence-based treatments for SAD are available, less than a third of affected individuals experience symptom remission after one year of treatment. Therefore, improved treatment options are urgently needed, and CBD is one candidate medication that may have certain benefits over current pharmacotherapies, including the absence of sedating side effects, reduced abuse liability, and rapid course of action. The current review provides a brief overview of CBD's mechanisms of action, neuroimaging in SAD, and evidence for CBD's effects on the neural substrates of SAD, as well as systematically reviewing literature directly examining the efficacy of CBD for improving social anxiety among healthy volunteers and individuals with SAD. In both populations, acute CBD administration significantly decreased anxiety without co-occurring sedation. A single study has also shown chronic administration to decrease social anxiety symptoms in individuals with SAD. Collectively, the current literature suggests CBD may be a promising treatment for SAD. However, further research is needed to establish optimal dosing, assess the timecourse of CBD's anxiolytic effects, evaluate long-term CBD administration, and explore sex differences in CBD for social anxiety.
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Affiliation(s)
| | - Sarah D. Lichenstein
- Corresponding author. 1 Church Street 7th Floor New Haven, CT, 06510, USA., (S.D. Lichenstein)
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10
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Dillon DG, Lazarov A, Dolan S, Bar-Haim Y, Pizzagalli DA, Schneier FR. Fast evidence accumulation in social anxiety disorder enhances decision making in a probabilistic reward task. Emotion 2022; 22:1-18. [PMID: 34968142 PMCID: PMC9521281 DOI: 10.1037/emo0001053] [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: 02/03/2023]
Abstract
Choices and response times in two-alternative decision-making tasks can be modeled by assuming that individuals steadily accrue evidence in favor of each alternative until a response boundary for one of them is crossed, at which point that alternative is chosen. Prior studies have reported that evidence accumulation during decision-making tasks takes longer in adults with psychopathology than in healthy controls, indicating that slow evidence accumulation may be transdiagnostic. However, few studies have examined perceptual decision making in anxiety disorders, where hypervigilance might enhance performance. Therefore, this study used the Hierarchical Drift Diffusion model to investigate evidence accumulation in adults with social anxiety disorder (SAD) and healthy controls as they performed a probabilistic reward task (PRT), in which social rewards were delivered for correct perceptual judgments. Adults with SAD completed the PRT before and after gaze-contingent music reward therapy (GCMRT), which trains attention allocation and has shown efficacy for SAD. Healthy controls also completed the PRT twice. Results revealed excellent performance in adults with SAD, especially after GCMRT: relative to controls, they showed faster evidence accumulation, better discriminability, and earned more rewards. These data highlight a positive effect of attention training on performance in anxious adults and show how a behavioral trait that is typically problematic-hypervigilance in SAD-can nevertheless confer advantages in certain contexts. The data also indicate that, in contrast to other forms of psychopathology, SAD is not characterized by slow evidence accumulation, at least in the context of the social PRT. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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Affiliation(s)
- Daniel G. Dillon
- McLean Hospital, Belmont, MA, USA,Harvard Medical School, Boston, MA, USA
| | | | - Sarah Dolan
- New York State Psychiatric Institute, New York, NY, USA
| | | | | | - Franklin R. Schneier
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA,New York State Psychiatric Institute, New York, NY, USA
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11
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Ahmed M, Boileau I, Le Foll B, Carvalho AF, Kloiber S. The endocannabinoid system in social anxiety disorder: from pathophysiology to novel therapeutics. ACTA ACUST UNITED AC 2021; 44:81-93. [PMID: 34468550 PMCID: PMC8827369 DOI: 10.1590/1516-4446-2021-1926] [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: 03/31/2021] [Accepted: 06/15/2021] [Indexed: 11/22/2022]
Abstract
Social anxiety disorder (SAD) is a highly prevalent psychiatric disorder that presents with an early age of onset, chronic disease course, and increased risk of psychiatric comorbidity. Current treatment options for SAD are associated with low response rates, suboptimal efficacy, and possible risk of adverse effects. Investigation of new neurobiological mechanisms may aid in the identification of more specific therapeutic targets for the treatment of this disorder. Emerging evidence suggests that the endogenous cannabinoid system, also referred to as the endocannabinoid system (ECS), could play a potential role in the pathophysiology of SAD. This review discusses the known pathophysiological mechanisms of SAD, the potential role of the ECS in this disorder, current drugs targeting the ECS, and the potential of these novel compounds to enhance the therapeutic armamentarium for SAD. Further investigational efforts, specifically in human populations, are warranted to improve our knowledge of the ECS in SAD.
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Affiliation(s)
- Mashal Ahmed
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Brain Health Imaging Centre, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada
| | - Isabelle Boileau
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Brain Health Imaging Centre, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada.,Campbell Family Mental Health Research Institute, CAMH, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Bernard Le Foll
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Campbell Family Mental Health Research Institute, CAMH, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Andre F Carvalho
- Campbell Family Mental Health Research Institute, CAMH, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Innovation in Mental and Physical Health and Clinical Treatment (IMPACT) Strategic Research Centre, Deakin University, Geelong, VIC, Australia, 3216
| | - Stefan Kloiber
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Campbell Family Mental Health Research Institute, CAMH, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
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12
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Dowran B, Khanaliha K, Mohammadzadeh T. Toxoplasmosis and Anxiety: A Review Study. INTERNATIONAL JOURNAL OF ENTERIC PATHOGENS 2021. [DOI: 10.34172/ijep.2021.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: Toxoplasmosis, a significant zoonotic parasitic disease with serious health problems, is caused by apicomplexan protozoa, Toxoplasma gondii. Evidence has shown that Toxoplasma can also lead to psychological diseases. Objectives: The aim of this study was to collect information on the relationship between anxiety and toxoplasmosis. Materials and Methods: PubMed, Google Scholar, Noormags, and Magiran databases were searched for studies published from 2010 to October 2020. Studies that assessed the relationship between toxoplasmosis/toxoplasma and anxiety were included in the analysis. Synthesis of the results was the primary strategy for data analysis. Results: According to the inclusion and exclusion criteria, 16 articles were selected. They had been conducted in Iran, the USA, Turkey, the Czech Republic, Finland, Mexico, Austria, and Denmark. In general, the results of 8 out of 11 investigated human studies indicated that T. gondii infection was associated with anxiety. Moreover, five of them were non-human studies, and most of them showed that T. gondii caused anxiety-related symptoms. Conclusion: The results of most studies showed that toxoplasmosis could be associated with anxiety. However, more studies are needed to look closely at how anxiety relates to this parasite.
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Affiliation(s)
- Behnaz Dowran
- Behavioral Sciences Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Khadijeh Khanaliha
- Research Center of Pediatric Infectious Diseases, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran
| | - Tahereh Mohammadzadeh
- Health Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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13
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Wipper B, Winkelman JW. The Long-Term Psychiatric and Cardiovascular Morbidity and Mortality of Restless Legs Syndrome and Periodic Limb Movements of Sleep. Sleep Med Clin 2021; 16:279-288. [PMID: 33985653 DOI: 10.1016/j.jsmc.2021.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Restless legs syndrome (RLS) is a sensory-motor neurological disorder that is associated with high levels of distress and sleep disturbance. Cross-sectional and longitudinal evidence suggests that individuals suffering from RLS may be at an increased risk of certain psychiatric illnesses and cardiovascular diseases. There also is evidence for increased mortality rates in RLS patients, although contrasting results do exist. Periodic limb movements of sleep (PLMS), repetitive leg movement observed in most RLS patients, and sleep disturbance may mediate the relationship between RLS and long-term morbidity. This article summarizes the literature investigating the potential consequences of both RLS and PLMS.
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Affiliation(s)
- Benjamin Wipper
- Sleep Disorders Clinical Research Program, Massachusetts General Hospital, Harvard Medical School, One Bowdoin Square, 10th Floor, Boston, MA 02114, USA
| | - John W Winkelman
- Sleep Disorders Clinical Research Program, Massachusetts General Hospital, Harvard Medical School, One Bowdoin Square, 10th Floor, Boston, MA 02114, USA; Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA.
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14
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Caravaggio F, Porco N, Kim J, Torres-Carmona E, Brown E, Iwata Y, Nakajima S, Gerretsen P, Remington G, Graff-Guerrero A. Measuring amphetamine-induced dopamine release in humans: A comparative meta-analysis of [ 11 C]-raclopride and [ 11 C]-(+)-PHNO studies. Synapse 2021; 75:e22195. [PMID: 33471400 DOI: 10.1002/syn.22195] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/02/2021] [Accepted: 01/13/2021] [Indexed: 02/06/2023]
Abstract
The radiotracers [11 C]-raclopride and [11 C]-(+)-PHNO are commonly used to measure differences in amphetamine-induced dopamine release between healthy persons and persons with neuropsychiatric diseases. As an agonist radiotracer, [11 C]-(+)-PHNO should theoretically be roughly 2.7 times more sensitive to displacement by endogenous dopamine than [11 C]raclopride. To date, only one study has been published comparing the sensitivity of these two radiotracers to amphetamine-induced dopamine release in healthy persons. Unfortunately, conflicting findings in the literature suggests that the dose of amphetamine they employed (0.3 mg/kg, p.o.) may not reliably reduce [11 C]-raclopride binding in the caudate. Thus, it is unclear whether the preponderance of evidence supports the theory that [11 C]-(+)-PHNO is more sensitive to displacement by amphetamine in humans than [11 C]-raclopride. In order to clarify these issues, we conducted a comparative meta-analysis summarizing the effects of amphetamine on [11 C]-raclopride and [11 C]-(+)-PHNO binding in healthy humans. Our analysis indicates that amphetamine given at 0.3 mg/kg, p.o. does not reliably reduce [11 C]-raclopride binding in the caudate. Second, the greater sensitivity of [11 C]-(+)-PHNO is evidenced at 0.5 mg/kg, p.o., but not at lower doses of amphetamine. Third, our analysis suggests that [11 C]-(+)-PHNO may be roughly 1.5 to 2.5 times more sensitive to displacement by amphetamine than [11 C]-raclopride in healthy persons. We recommend that future displacement studies with these radiotracers employ 0.5 mg/kg, p.o. of amphetamine with a dose, post-scan interval of at least 3 hr. Using this dose of amphetamine, [11 C]-raclopride studies should employ at least n = 34 participants per group, while [11 C]-(+)-PHNO studies should employ at least n = 6 participants per group, in order to be sufficiently powered (80%) to detect changes in radiotracer binding within the caudate.
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Affiliation(s)
- Fernando Caravaggio
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Natasha Porco
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Julia Kim
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Edgardo Torres-Carmona
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Eric Brown
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Yusuke Iwata
- Department of Neuropsychiatry, University of Yamanashi, Chuo, Japan
| | | | - Philip Gerretsen
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Gary Remington
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Ariel Graff-Guerrero
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
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15
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Dong MX, Chen GH, Hu L. Dopaminergic System Alteration in Anxiety and Compulsive Disorders: A Systematic Review of Neuroimaging Studies. Front Neurosci 2020; 14:608520. [PMID: 33343291 PMCID: PMC7744599 DOI: 10.3389/fnins.2020.608520] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 10/30/2020] [Indexed: 12/16/2022] Open
Abstract
Objective: The dopaminergic system is involved in many psychiatric disorders as a GABAergic, serotonergic, and glutamatergic system. A systematic review and meta-analysis was performed to elucidate the alteration of the dopaminergic system in anxiety and compulsive disorders. Methods: The databases of Pubmed, Embase, and ScienceDirect were searched and articles reporting the involvement of the dopaminergic system in patients with anxiety disorder and obsessive compulsive disorder (OCD) were recognized. The key research data were extracted from the included articles and standardized mean differences were calculated using meta-analyses if there were more than two studies with obtainable data. Sensitivity analyses were further performed to detect the stability of results, and the qualities of all the included studies were assessed using the Newcastle Ottawa scale. Results: Finally, we identified 8 and 11 studies associated with anxiety disorder and OCD for further analysis, respectively. Most consistently, the striatal dopamine D2 receptor (D2R) of OCD patients had decreased while no significant correlation was found between striatal D2R and disease severity. The striatal dopamine transporter (DAT) had not been significantly altered in both the anxiety disorder and OCD patients. The heterogeneity values from the meta-analyses were extremely high while those results remained stable after sensitivity analyses. Inconsistent data were found in the striatal D2R of patients with anxiety disorder. Limited data had suggested that dopamine synthesis increased in most regions of the cerebral cortex and cerebellum in OCD patients. Conclusions: The most convincing finding was that the D2 receptor decreased in patients with obsessive compulsive disorder. The dopamine transporter may have no relationship with anxiety and compulsive disorder.
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Affiliation(s)
- Mei-Xue Dong
- Department of Neurology, Hubei General Hospital, Renmin Hospital of Wuhan University, Wuhan, China
| | - Guang-Hui Chen
- Department of Pharmacy, Hubei General Hospital, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ling Hu
- Department of Neurology, Hubei General Hospital, Renmin Hospital of Wuhan University, Wuhan, China
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16
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Papalini S, Beckers T, Vervliet B. Dopamine: from prediction error to psychotherapy. Transl Psychiatry 2020; 10:164. [PMID: 32451377 PMCID: PMC7248121 DOI: 10.1038/s41398-020-0814-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 04/14/2020] [Accepted: 04/21/2020] [Indexed: 02/07/2023] Open
Abstract
Dopamine, one of the main neurotransmitters in the mammalian brain, has been implicated in the coding of prediction errors that govern reward learning as well as fear extinction learning. Psychotherapy too can be viewed as a form of error-based learning, because it challenges erroneous beliefs and behavioral patterns in order to induce long-term changes in emotions, cognitions, and behaviors. Exposure therapy, for example, relies in part on fear extinction principles to violate erroneous expectancies of danger and induce novel safety learning that inhibits and therefore reduces fear in the long term. As most forms of psychotherapy, however, exposure therapy suffers from non-response, dropout, and relapse. This narrative review focuses on the role of midbrain and prefrontal dopamine in novel safety learning and investigates possible pathways through which dopamine-based interventions could be used as an adjunct to improve both the response and the long-term effects of the therapy. Convincing evidence exists for an involvement of the midbrain dopamine system in the acquisition of new, safe memories. Additionally, prefrontal dopamine is emerging as a key ingredient for the consolidation of fear extinction. We propose that applying a dopamine prediction error perspective to psychotherapy can inspire both pharmacological and non-pharmacological studies aimed at discovering innovative ways to enhance the acquisition of safety memories. Additionally, we call for further empirical investigations on dopamine-oriented drugs that might be able to maximize consolidation of successful fear extinction and its long-term retention after therapy, and we propose to also include investigations on non-pharmacological interventions with putative prefrontal dopaminergic effects, like working memory training.
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Affiliation(s)
- Silvia Papalini
- Laboratory of Biological Psychology (LBP), Faculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium. .,Leuven Brain Institute, KU Leuven, Leuven, Belgium.
| | - Tom Beckers
- grid.5596.f0000 0001 0668 7884Leuven Brain Institute, KU Leuven, Leuven, Belgium ,grid.5596.f0000 0001 0668 7884Centre for the Psychology of Learning and Experimental Psychopathology (CLEP), Faculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium
| | - Bram Vervliet
- grid.5596.f0000 0001 0668 7884Laboratory of Biological Psychology (LBP), Faculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium ,grid.5596.f0000 0001 0668 7884Leuven Brain Institute, KU Leuven, Leuven, Belgium
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17
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Carlton CN, Sullivan-Toole H, Ghane M, Richey JA. Reward Circuitry and Motivational Deficits in Social Anxiety Disorder: What Can Be Learned From Mouse Models? Front Neurosci 2020; 14:154. [PMID: 32174811 PMCID: PMC7054462 DOI: 10.3389/fnins.2020.00154] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 02/10/2020] [Indexed: 01/09/2023] Open
Abstract
Social anxiety disorder (SAD) is a common and serious psychiatric condition that typically emerges during adolescence and persists into adulthood if left untreated. Prevailing interventions focus on modulating threat and arousal systems but produce only modest rates of remission. This gap in efficacy suggests that most mainstream treatment concepts do not sufficiently target core processes involved in the onset and maintenance of SAD. This idea has further driven the development of new theoretical models that target dopamine (DA)-driven reward circuitry and motivational deficits that appear to be systematically altered in SAD. Most of the available data linking systemic alterations in DA neurobiology to SAD in humans, although abundant, remains at the level of correlational evidence. Accordingly, the purpose of this brief review is to critically evaluate the relevance of experimental work in rodent models that link details of DA function to symptoms of social anxiety. We conclude that, despite certain systematic limitations inherent in animal models, these approaches provide useful insights into human biomarkers of social anxiety including that (1) adolescence may serve as a critical period for the convergence of neurobiological and environmental factors that modify future expectations about social reward through experience dependent changes in DA-ergic circuitry, (2) females may show unique susceptibility to social anxiety symptoms when encountering relational instability that influences DA-related neural processes, and (3) separate from fear and arousal systems, the functional neurobiology of central DA systems contribute uniquely to susceptibility and maintenance of anhedonic factors relevant to human models of SAD.
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Affiliation(s)
- Corinne N Carlton
- Clinical Science Program, Department of Psychology, Virginia Tech, Blacksburg, VA, United States
| | - Holly Sullivan-Toole
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA, United States
| | - Merage Ghane
- Clinical Science Program, Department of Psychology, Virginia Tech, Blacksburg, VA, United States
| | - John A Richey
- Clinical Science Program, Department of Psychology, Virginia Tech, Blacksburg, VA, United States
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18
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Nikolaus S, Mamlins E, Hautzel H, Müller HW. Acute anxiety disorder, major depressive disorder, bipolar disorder and schizophrenia are related to different patterns of nigrostriatal and mesolimbic dopamine dysfunction. Rev Neurosci 2019; 30:381-426. [PMID: 30269107 DOI: 10.1515/revneuro-2018-0037] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/30/2018] [Indexed: 11/15/2022]
Abstract
Dopamine (DA) receptor and transporter dysfunctions play a major role in the pathophysiology of neuropsychiatric diseases including anxiety disorder (AD), major depressive disorder (MDD), bipolar disorder (BD) in the manic (BDman) or depressive (BDdep) state and schizophrenia (SZ). We performed a PUBMED search, which provided a total of 239 in vivo imaging studies with either positron emission tomography (PET) or single-proton emission computed tomography (SPECT). In these studies, DA transporter binding, D1 receptor (R) binding, D2R binding, DA synthesis and/or DA release in patients with the primary diagnosis of acute AD (n=310), MDD (n=754), BDman (n=15), BDdep (n=49) or SZ (n=1532) were compared to healthy individuals. A retrospective analysis revealed that AD, MDD, BDman, BDdep and SZ differed as to affected brain region(s), affected synaptic constituent(s) and extent as well as direction of dysfunction in terms of either sensitization or desensitization of transporter and/or receptor binding sites. In contrast to AD and SZ, in MDD, BDman and BDdep, neostriatal DA function was normal, whereas MDD, BDman, and BDdep were characterized by the increased availability of prefrontal and frontal DA. In contrast to AD, MDD, BDman and BDdep, DA function in SZ was impaired throughout the nigrostriatal and mesolimbocortical system with an increased availability of DA in the striatothalamocortical and a decreased availability in the mesolimbocortical pathway.
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Affiliation(s)
- Susanne Nikolaus
- Clinic of Nuclear Medicine, University Hospital Düsseldorf, Heinrich Heine University, Moorenstr. 5, D-40225 Düsseldorf, Germany
| | - Eduards Mamlins
- Clinic of Nuclear Medicine, University Hospital Düsseldorf, Heinrich Heine University, Moorenstr. 5, D-40225 Düsseldorf, Germany
| | - Hubertus Hautzel
- Clinic of Nuclear Medicine, University Hospital Düsseldorf, Heinrich Heine University, Moorenstr. 5, D-40225 Düsseldorf, Germany
| | - Hans-Wilhelm Müller
- Clinic of Nuclear Medicine, University Hospital Düsseldorf, Heinrich Heine University, Moorenstr. 5, D-40225 Düsseldorf, Germany
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19
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Wang Y, Wang X, Ye L, Yang Q, Cui Q, He Z, Li L, Yang X, Zou Q, Yang P, Liu D, Chen H. Spatial complexity of brain signal is altered in patients with generalized anxiety disorder. J Affect Disord 2019; 246:387-393. [PMID: 30597300 DOI: 10.1016/j.jad.2018.12.107] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 12/19/2018] [Accepted: 12/24/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Is it healthy to be chaotic? Recent studies have argued that mental disorders are associated with more orderly neural activities, corresponding to a less flexible functional system. These conclusions were derived from altered temporal complexity. However, the relationship between spatial complexity and health is unknown, although spatial configuration is of importance for normal brain function. METHODS Based on resting-state functional magnetic resonance imaging data, we used Sample entropy (SampEn) to evaluate the altered spatial complexity in patients with generalized anxiety disorder (GAD; n = 47) compared to healthy controls (HCs; n = 38) and the relationship between spatial complexity and anxiety level. RESULTS Converging results showed increased spatial complexity in patients with GAD, indicating more chaotic spatial configuration. Interestingly, inverted-U relationship was revealed between spatial complexity and anxiety level, suggesting complex relationship between health and the chaos of human brain. LIMITATIONS Anxiety-related alteration of spatial complexity should be verified at voxel level in a larger sample and compared with results of other indices to clarify the mechanism of spatial chaotic of anxiety. CONCLUSIONS Altered spatial complexity in the brain of GAD patients mirrors inverted-U relationship between anxiety and behavioral performance, which may reflect an important characteristic of anxiety. These results indicate that SampEn is a good reflection of human health or trait mental characteristic.
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Affiliation(s)
- Yifeng Wang
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xinqi Wang
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Liangkai Ye
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Qi Yang
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Qian Cui
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Public Affairs and Administration, University of Electronic Science and Technology of China, Chengdu, China
| | - Zongling He
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Liyuan Li
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xuezhi Yang
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Qijun Zou
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Pu Yang
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Dongfeng Liu
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Huafu Chen
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in Medicine, University of Electronic Science and Technology of China, Chengdu, China.
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20
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Dopaminergic Mechanisms Underlying Normal Variation in Trait Anxiety. J Neurosci 2019; 39:2735-2744. [PMID: 30737306 DOI: 10.1523/jneurosci.2382-18.2019] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 01/03/2019] [Accepted: 01/29/2019] [Indexed: 02/07/2023] Open
Abstract
Trait anxiety has been associated with altered activity within corticolimbic pathways connecting the amygdala and rostral anterior cingulate cortex (rACC), which receive rich dopaminergic input. Though the popular culture uses the term "chemical imbalance" to describe the pathophysiology of psychiatric conditions such as anxiety disorders, we know little about how individual differences in human dopamine neurochemistry are related to variation in anxiety and activity within corticolimbic circuits. We addressed this issue by examining interindividual variability in dopamine release at rest using [11C]raclopride positron emission tomography (PET), functional connectivity between amygdala and rACC using resting-state functional magnetic resonance imaging (fMRI), and trait anxiety measures in healthy adult male and female humans. To measure endogenous dopamine release, we collected two [11C]raclopride PET scans per participant. We contrasted baseline [11C]raclopride D2/3 receptor binding and D2/3 receptor binding following oral methylphenidate administration. Methylphenidate blocks the dopamine transporter, which increases extracellular dopamine and leads to reduced [11C]raclopride D2/3 receptor binding via competitive displacement. We found that individuals with higher dopamine release in the amygdala and rACC self-reported lower trait anxiety. Lower trait anxiety was also associated with reduced rACC-amygdala functional connectivity at baseline. Further, functional connectivity showed a modest negative relationship with dopamine release such that reduced rACC-amygdala functional connectivity was accompanied by higher levels of dopamine release in these regions. Together, these findings contribute to hypodopaminergic models of anxiety and support the utility of combining fMRI and PET measures of neurochemical function to advance our understanding of basic affective processes in humans.SIGNIFICANCE STATEMENT It is common wisdom that individuals vary in their baseline levels of anxiety. We all have a friend or colleague we know to be more "tightly wound" than others, or, perhaps, we are the ones marveling at others' ability to "just go with the flow." Although such observations about individual differences within nonclinical populations are commonplace, the neural mechanisms underlying normal variation in trait anxiety have not been established. Using multimodal brain imaging in humans, this study takes initial steps in linking intrinsic measures of neuromodulator release and functional connectivity within regions implicated in anxiety disorders. Our findings suggest that in healthy adults, higher levels of trait anxiety may arise, at least in part, from reduced dopamine neurotransmission.
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21
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Doruyter AG, Dupont P, Stein DJ, Lochner C, Warwick JM. Nuclear Neuroimaging in Social Anxiety Disorder: A Review. J Nucl Med 2018; 59:1794-1800. [DOI: 10.2967/jnumed.118.212795] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 10/03/2018] [Indexed: 12/12/2022] Open
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22
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Jørgensen LM, Weikop P, Svarer C, Feng L, Keller SH, Knudsen GM. Cerebral serotonin release correlates with [ 11C]AZ10419369 PET measures of 5-HT 1B receptor binding in the pig brain. J Cereb Blood Flow Metab 2018; 38:1243-1252. [PMID: 28685616 PMCID: PMC6434452 DOI: 10.1177/0271678x17719390] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/26/2017] [Accepted: 05/21/2017] [Indexed: 11/17/2022]
Abstract
Positron emission tomography (PET) can, when used with appropriate radioligands, non-invasively capture temporal and spatial information about acute changes in brain neurotransmitter systems. We here evaluate the 5-HT1B receptor partial agonist PET radioligand, [11C]AZ10419369, for its sensitivity to detect changes in endogenous cerebral serotonin levels, as induced by different pharmacological challenges. To enable a direct translation of PET imaging data to changes in brain serotonin levels, we compared the [11C]AZ10419369 PET signal in the pig brain to simultaneous measurements of extracellular serotonin levels with microdialysis after various acute interventions (saline, escitalopram, fenfluramine). The interventions increased the cerebral extracellular serotonin levels to two to six times baseline, with fenfluramine being the most potent pharmacological enhancer of serotonin release. The interventions induced a varying degree of decline in [11C]AZ10419369 binding in the brain, consistent with the occupancy competition model. The observed correlation between changes in the extracellular serotonin level in the pig brain and the 5-HT1B receptor occupancy indicates that [11C]AZ10419369 binding is sensitive to changes in endogenous serotonin levels to a degree equivalent to that reported of [11C]raclopride to dopamine, a much used approach to detect in vivo change in cerebral dopamine.
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Affiliation(s)
- Louise M Jørgensen
- Neurobiology Research Unit,
Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences,
University of Copenhagen, Copenhagen, Denmark
| | - Pia Weikop
- Department of Neuroscience and
Pharmacology, The Laboratory of Neuropsychiatry, University of Copenhagen,
Copenhagen, Denmark
- Psychiatric Centre Copenhagen,
University of Copenhagen, Copenhagen, Denmark
| | - Claus Svarer
- Neurobiology Research Unit,
Rigshospitalet, Copenhagen, Denmark
| | - Ling Feng
- Neurobiology Research Unit,
Rigshospitalet, Copenhagen, Denmark
| | - Sune H Keller
- Department of Clinical Physiology,
Nuclear Medicine and PET, Rigshospitalet, University of Copenhagen, Copenhagen,
Denmark
| | - Gitte M Knudsen
- Neurobiology Research Unit,
Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences,
University of Copenhagen, Copenhagen, Denmark
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23
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Karim MR, Yanagawa A, Ohinata K. Soy undecapeptide induces Drosophila hind leg grooming via dopamine receptor. Biochem Biophys Res Commun 2018; 499:454-458. [PMID: 29577906 DOI: 10.1016/j.bbrc.2018.03.162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 03/21/2018] [Indexed: 11/30/2022]
Abstract
β-Conglycinin α subunit (323-333) [βCGα(323-333)] is an exogenous neuromodulating undecapeptide found from enzymatic digest of β-conglycinin, a soy major storage protein by mice behavior tests. We investigated effect of βCGα(323-333) on Drosophila behavior. Oral administration of βCGα(323-333) in Drosophila increased hind leg grooming, which may act through specific sets of neurons. It was reported that dopamine receptor (DopR) meditates hind leg grooming, and we tested involvement of DopR in βCGα(323-333)-induced hind leg grooming by using DopR knockout flies. In the wild type but not in the DopR-knockout flies, βCGα(323-333) increased hind leg grooming. These results suggest that βCGα(323-333) induces hind leg grooming via activating the DopR. This is the first report showing that exogenously administered peptide changes fly behaviors.
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Affiliation(s)
- M Rezaul Karim
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan; Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Aya Yanagawa
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
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24
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Maron E, Lan CC, Nutt D. Imaging and Genetic Approaches to Inform Biomarkers for Anxiety Disorders, Obsessive-Compulsive Disorders, and PSTD. Curr Top Behav Neurosci 2018; 40:219-292. [PMID: 29796838 DOI: 10.1007/7854_2018_49] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Anxiety disorders are the most common mental health problem in the world and also claim the highest health care cost among various neuropsychiatric disorders. Anxiety disorders have a chronic and recurrent course and cause significantly negative impacts on patients' social, personal, and occupational functioning as well as quality of life. Despite their high prevalence rates, anxiety disorders have often been under-diagnosed or misdiagnosed, and consequently under-treated. Even with the correct diagnosis, anxiety disorders are known to be difficult to treat successfully. In order to implement better strategies in diagnosis, prognosis, treatment decision, and early prevention for anxiety disorders, tremendous efforts have been put into studies using genetic and neuroimaging techniques to advance our understandings of the underlying biological mechanisms. In addition to anxiety disorders including panic disorder, generalised anxiety disorder (GAD), specific phobias, social anxiety disorders (SAD), due to overlapping symptom dimensions, obsessive-compulsive disorder (OCD), and post-traumatic stress disorder (PTSD) (which were removed from the anxiety disorder category in DSM-5 to become separate categories) are also included for review of relevant genetic and neuroimaging findings. Although the number of genetic or neuroimaging studies focusing on anxiety disorders is relatively small compare to other psychiatric disorders such as psychotic disorders or mood disorders, various structural abnormalities in the grey or white matter, functional alterations of activity during resting-state or task conditions, molecular changes of neurotransmitter receptors or transporters, and genetic associations have all been reported. With continuing effort, further genetic and neuroimaging research may potentially lead to clinically useful biomarkers for the prevention, diagnosis, and management of these disorders.
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Affiliation(s)
- Eduard Maron
- Neuropsychopharmacology Unit, Centre for Academic Psychiatry, Division of Brain Sciences, Imperial College London, London, UK.
- Department of Psychiatry, University of Tartu, Tartu, Estonia.
- Department of Psychiatry, North Estonia Medical Centre, Tallinn, Estonia.
| | - Chen-Chia Lan
- Neuropsychopharmacology Unit, Centre for Academic Psychiatry, Division of Brain Sciences, Imperial College London, London, UK
- Department of Psychiatry, Taichung Veterans General Hospital, Taichung, Taiwan
| | - David Nutt
- Neuropsychopharmacology Unit, Centre for Academic Psychiatry, Division of Brain Sciences, Imperial College London, London, UK
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25
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Becker MPI, Simon D, Miltner WHR, Straube T. Altered activation of the ventral striatum under performance-related observation in social anxiety disorder. Psychol Med 2017; 47:2502-2512. [PMID: 28464974 DOI: 10.1017/s0033291717001076] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Social anxiety disorder (SAD) is characterized by fear of social and performance situations. The consequence of scrutiny by others for the neural processing of performance feedback in SAD is unknown. METHODS We used event-related functional magnetic resonance imaging to investigate brain activation to positive, negative, and uninformative performance feedback in patients diagnosed with SAD and age-, gender-, and education-matched healthy control subjects who performed a time estimation task during a social observation condition and a non-social control condition: while either being monitored or unmonitored by a body camera, subjects received performance feedback after performing a time estimation that they could not fully evaluate without external feedback. RESULTS We found that brain activation in ventral striatum (VS) and midcingulate cortex was modulated by an interaction of social context and feedback type. SAD patients showed a lack of social-context-dependent variation of feedback processing, while control participants showed an enhancement of brain responses specifically to positive feedback in VS during observation. CONCLUSIONS The present findings emphasize the importance of social-context processing in SAD by showing that scrutiny prevents appropriate reward-processing-related signatures in response to positive performances in SAD.
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Affiliation(s)
- M P I Becker
- Department of Biological and Clinical Psychology,Friedrich Schiller University,D-07743 Jena,Germany
| | - D Simon
- Department of Biological and Clinical Psychology,Friedrich Schiller University,D-07743 Jena,Germany
| | - W H R Miltner
- Department of Biological and Clinical Psychology,Friedrich Schiller University,D-07743 Jena,Germany
| | - T Straube
- Department of Biological and Clinical Psychology,Friedrich Schiller University,D-07743 Jena,Germany
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26
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Plavén-Sigray P, Hedman E, Victorsson P, Matheson GJ, Forsberg A, Djurfeldt DR, Rück C, Halldin C, Lindefors N, Cervenka S. Extrastriatal dopamine D2-receptor availability in social anxiety disorder. Eur Neuropsychopharmacol 2017; 27:462-469. [PMID: 28377075 DOI: 10.1016/j.euroneuro.2017.03.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/06/2017] [Accepted: 03/18/2017] [Indexed: 12/13/2022]
Abstract
Alterations in the dopamine system are hypothesized to influence the expression of social anxiety disorder (SAD) symptoms. However, molecular imaging studies comparing dopamine function between patients and control subjects have yielded conflicting results. Importantly, while all previous investigations focused on the striatum, findings from activation and blood flow studies indicate that prefrontal and limbic brain regions have a central role in the pathophysiology. The objective of this study was to investigate extrastriatal dopamine D2-receptor (D2-R) availability in SAD. We examined 12 SAD patients and 16 healthy controls using positron emission tomography and the high-affinity D2-R radioligand [11C]FLB457. Parametric images of D2-R binding potential were derived using the Logan graphical method with cerebellum as reference region. Two-tailed one-way independent ANCOVAs, with age as covariate, were used to examine differences in D2-R availability between groups using both region-based and voxel-wise analyses. The region-based analysis showed a medium effect size of higher D2-R levels in the orbitofrontal cortex (OFC) in patients, although this result did not remain significant after correction for multiple comparisons. The voxel-wise comparison revealed elevated D2-R availability in patients within OFC and right dorsolateral prefrontal cortex after correction for multiple comparisons. These preliminary results suggest that an aberrant extrastriatal dopamine system may be part of the disease mechanism in SAD.
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Affiliation(s)
- Pontus Plavén-Sigray
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden.
| | - Erik Hedman
- Stockholm Health Care Services, Stockholm County Council, Sweden; Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Pauliina Victorsson
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Granville J Matheson
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Anton Forsberg
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Diana R Djurfeldt
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Christian Rück
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Christer Halldin
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Nils Lindefors
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
| | - Simon Cervenka
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Stockholm Health Care Services, Stockholm County Council, Sweden
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27
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Lee KH, Lujan JL, Trevathan JK, Ross EK, Bartoletta JJ, Park HO, Paek SB, Nicolai EN, Lee JH, Min HK, Kimble CJ, Blaha CD, Bennet KE. WINCS Harmoni: Closed-loop dynamic neurochemical control of therapeutic interventions. Sci Rep 2017; 7:46675. [PMID: 28452348 PMCID: PMC5408229 DOI: 10.1038/srep46675] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 03/24/2017] [Indexed: 01/24/2023] Open
Abstract
There has been significant progress in understanding the role of neurotransmitters in normal and pathologic brain function. However, preclinical trials aimed at improving therapeutic interventions do not take advantage of real-time in vivo neurochemical changes in dynamic brain processes such as disease progression and response to pharmacologic, cognitive, behavioral, and neuromodulation therapies. This is due in part to a lack of flexible research tools that allow in vivo measurement of the dynamic changes in brain chemistry. Here, we present a research platform, WINCS Harmoni, which can measure in vivo neurochemical activity simultaneously across multiple anatomical targets to study normal and pathologic brain function. In addition, WINCS Harmoni can provide real-time neurochemical feedback for closed-loop control of neurochemical levels via its synchronized stimulation and neurochemical sensing capabilities. We demonstrate these and other key features of this platform in non-human primate, swine, and rodent models of deep brain stimulation (DBS). Ultimately, systems like the one described here will improve our understanding of the dynamics of brain physiology in the context of neurologic disease and therapeutic interventions, which may lead to the development of precision medicine and personalized therapies for optimal therapeutic efficacy.
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Affiliation(s)
- Kendall H. Lee
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, United States of America
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN 55905, United States of America
| | - J. Luis Lujan
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, United States of America
| | - James K. Trevathan
- Mayo Graduate School, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Erika K. Ross
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
| | - John J. Bartoletta
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Hyung Ook Park
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Seungleal Brian Paek
- Mayo Graduate School, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Evan N. Nicolai
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Jannifer H. Lee
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Hoon-Ki Min
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, United States of America
| | | | - Charles D. Blaha
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
| | - Kevin E. Bennet
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, United States of America
- Division of Engineering, Mayo Clinic, Rochester, MN 55905, United States of America
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28
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Zoons E, Tijssen MAJ, Dreissen YEM, Speelman JD, Smit M, Booij J. The relationship between the dopaminergic system and depressive symptoms in cervical dystonia. Eur J Nucl Med Mol Imaging 2017; 44:1375-1382. [PMID: 28314910 PMCID: PMC5486819 DOI: 10.1007/s00259-017-3664-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 02/23/2017] [Indexed: 12/29/2022]
Abstract
PURPOSE Cervical dystonia (CD) is associated with tremor/jerks (50%) and psychiatric complaints (17-70%). The dopaminergic system has been implicated in the pathophysiology of CD in animal and imaging studies. Dopamine may be related to the motor as well as non-motor symptoms of CD. CD is associated with reduced striatal dopamine D2/3 (D2/3) receptor and increased dopamine transporter (DAT) binding. There are differences in the dopamine system between CD patients with and without jerks/tremor and psychiatric symptoms. METHODS Patients with CD and healthy controls underwent neurological and psychiatric examinations. Striatal DAT and D2/3 receptor binding were assessed using [123I]FP-CIT and [123I]IBZM SPECT, respectively. The ratio of specific striatal to non-specific binding (binding potential; BPND) was the outcome measure. RESULTS Twenty-seven patients with CD and 15 matched controls were included. Nineteen percent of patients fulfilled the criteria for a depression. Striatal DAT BPND was significantly lower in depressed versus non-depressed CD patients. Higher DAT BPND correlated significantly with higher scores on the Unified Myoclonus Rating Scale (UMRS). The striatal D2/3 receptor BPND in CD patients showed a trend towards lower binding compared to controls. The D2/3 BPND was significantly lower in depressed versus non-depressed CD patients. A significant correlation between DAT and D2/3R BPND was found in both in patients and controls. CONCLUSIONS Alterations of striatal DAT and D2/3 receptor binding in CD patients are related mainly to depression. DAT BPND correlates significantly with scores on the UMRS, suggesting a role for dopamine in the pathophysiology of tremor/jerks in CD.
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Affiliation(s)
- E Zoons
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
| | - M A J Tijssen
- Department of Neurology, University Medical Centre, Groningen, The Netherlands
| | - Y E M Dreissen
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
| | - J D Speelman
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
| | - M Smit
- Department of Neurology, University Medical Centre, Groningen, The Netherlands
| | - J Booij
- Department of Nuclear Medicine, Academic Medical Centre, PO Box 22660, 1100 DD, Amsterdam, The Netherlands.
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29
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Jørgensen LM, Weikop P, Villadsen J, Visnapuu T, Ettrup A, Hansen HD, Baandrup AO, Andersen FL, Bjarkam CR, Thomsen C, Jespersen B, Knudsen GM. Cerebral 5-HT release correlates with [ 11C]Cimbi36 PET measures of 5-HT2A receptor occupancy in the pig brain. J Cereb Blood Flow Metab 2017; 37:425-434. [PMID: 26825776 PMCID: PMC5381441 DOI: 10.1177/0271678x16629483] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Positron emission tomography (PET) can, when used with appropriate radioligands, non-invasively generate temporal and spatial information about acute changes in brain neurotransmitter systems. We for the first time evaluate the novel 5-HT2A receptor agonist PET radioligand, [11C]Cimbi-36, for its sensitivity to detect changes in endogenous cerebral 5-HT levels, as induced by different pharmacological challenges. To enable a direct translation of PET imaging data to changes in brain 5-HT levels, we calibrated the [11C]Cimbi-36 PET signal in the pig brain by simultaneous measurements of extracellular 5-HT levels with microdialysis and [11C]Cimbi-36 PET after various acute interventions (saline, citalopram, citalopram + pindolol, fenfluramine). In a subset of pigs, para-chlorophenylalanine pretreatment was given to deplete cerebral 5-HT. The interventions increased the cerebral extracellular 5-HT levels to 2-11 times baseline, with fenfluramine being the most potent pharmacological enhancer of 5-HT release, and induced a varying degree of decline in [11C]Cimbi-36 binding in the brain, consistent with the occupancy competition model. The observed correlation between changes in the extracellular 5-HT level in the pig brain and the 5-HT2A receptor occupancy indicates that [11C]Cimbi-36 binding is sensitive to changes in endogenous 5-HT levels, although only detectable with PET when the 5-HT release is sufficiently high.
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Affiliation(s)
- Louise M Jørgensen
- 1 Neurobiology Research Unit, Rigshospitalet, Copenhagen, Denmark.,2 Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Pia Weikop
- 3 The Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Denmark.,4 Psychiatric Centre Copenhagen, University of Copenhagen, Denmark
| | - Jonas Villadsen
- 1 Neurobiology Research Unit, Rigshospitalet, Copenhagen, Denmark
| | - Tanel Visnapuu
- 3 The Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Denmark.,5 Center for Excellence in Translational Medicine, University of Tartu, Estonia
| | - Anders Ettrup
- 1 Neurobiology Research Unit, Rigshospitalet, Copenhagen, Denmark
| | - Hanne D Hansen
- 1 Neurobiology Research Unit, Rigshospitalet, Copenhagen, Denmark
| | - Anders O Baandrup
- 6 Research Center for Advanced Imaging, Hospital of Køge and Roskilde, Roskilde, Denmark
| | | | | | - Carsten Thomsen
- 2 Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.,9 Department of Radiology, Rigshospitalet, Copenhagen, Denmark
| | - Bo Jespersen
- 10 Department of Neurosurgery, Rigshospitalet, Copenhagen, Denmark
| | - Gitte M Knudsen
- 1 Neurobiology Research Unit, Rigshospitalet, Copenhagen, Denmark.,2 Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
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30
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A. Richey J, Ghane M, Valdespino A, Coffman MC, Strege MV, White SW, Ollendick TH. Spatiotemporal dissociation of brain activity underlying threat and reward in social anxiety disorder. Soc Cogn Affect Neurosci 2017; 12:81-94. [PMID: 27798252 PMCID: PMC5390704 DOI: 10.1093/scan/nsw149] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 09/12/2016] [Accepted: 10/04/2016] [Indexed: 11/26/2022] Open
Abstract
Social anxiety disorder (SAD) involves abnormalities in social motivation, which may be independent of well-documented differences in fear and arousal systems. Yet, the neurobiology underlying motivational difficulties in SAD is not well understood. The aim of the current study was to spatiotemporally dissociate reward circuitry dysfunction from alterations in fear and arousal-related neural activity during anticipation and notification of social and non-social reward and punishment. During fMRI acquisition, non-depressed adults with social anxiety disorder (SAD; N = 21) and age-, sex- and IQ-matched control subjects (N = 22) completed eight runs of an incentive delay task, alternating between social and monetary outcomes and interleaved in alternating order between gain and loss outcomes. Adults with SAD demonstrated significantly reduced neural activity in ventral striatum during the anticipation of positive but not negative social outcomes. No differences between the SAD and control groups were observed during anticipation of monetary gain or loss outcomes or during anticipation of negative social images. However, consistent with previous work, the SAD group demonstrated amygdala hyper-activity upon notification of negative social outcomes. Degraded anticipatory processing in bilateral ventral striatum in SAD was constrained exclusively to anticipation of positive social information and dissociable from the effects of negative social outcomes previously observed in the amygdala. Alterations in anticipation-related neural signals may represent a promising target for treatment that is not addressed by available evidence-based interventions, which focus primarily on fear extinction and habituation processes.
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Affiliation(s)
- John A. Richey
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
| | - Merage Ghane
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
| | - Andrew Valdespino
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
| | - Marika C. Coffman
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
| | - Marlene V. Strege
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
| | - Susan W. White
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
- Virginia Tech Child Study Center, Suite 207, Turner St, Blacksburg, VA 24061, USA
| | - Thomas H. Ollendick
- Department of Psychology, Virginia Tech., 109 Williams Hall, MC0436 Blacksburg, VA 24061, USA
- Virginia Tech Child Study Center, Suite 207, Turner St, Blacksburg, VA 24061, USA
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Bandelow B, Baldwin D, Abelli M, Altamura C, Dell'Osso B, Domschke K, Fineberg NA, Grünblatt E, Jarema M, Maron E, Nutt D, Pini S, Vaghi MM, Wichniak A, Zai G, Riederer P. Biological markers for anxiety disorders, OCD and PTSD - a consensus statement. Part I: Neuroimaging and genetics. World J Biol Psychiatry 2016; 17:321-65. [PMID: 27403679 DOI: 10.1080/15622975.2016.1181783] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Biomarkers are defined as anatomical, biochemical or physiological traits that are specific to certain disorders or syndromes. The objective of this paper is to summarise the current knowledge of biomarkers for anxiety disorders, obsessive-compulsive disorder (OCD) and post-traumatic stress disorder (PTSD). METHODS Findings in biomarker research were reviewed by a task force of international experts in the field, consisting of members of the World Federation of Societies for Biological Psychiatry Task Force on Biological Markers and of the European College of Neuropsychopharmacology Anxiety Disorders Research Network. RESULTS The present article (Part I) summarises findings on potential biomarkers in neuroimaging studies, including structural brain morphology, functional magnetic resonance imaging and techniques for measuring metabolic changes, including positron emission tomography and others. Furthermore, this review reports on the clinical and molecular genetic findings of family, twin, linkage, association and genome-wide association studies. Part II of the review focuses on neurochemistry, neurophysiology and neurocognition. CONCLUSIONS Although at present, none of the putative biomarkers is sufficient and specific as a diagnostic tool, an abundance of high-quality research has accumulated that will improve our understanding of the neurobiological causes of anxiety disorders, OCD and PTSD.
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Affiliation(s)
- Borwin Bandelow
- a Department of Psychiatry and Psychotherapy , University of Göttingen , Germany
| | - David Baldwin
- b Faculty of Medicine , University of Southampton , Southampton , UK
| | - Marianna Abelli
- c Department of Clinical and Experimental Medicine , Section of Psychiatry, University of Pisa , Italy
| | - Carlo Altamura
- d Department of Psychiatry , University of Milan; Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico , Milan , Italy
| | - Bernardo Dell'Osso
- d Department of Psychiatry , University of Milan; Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico , Milan , Italy
| | - Katharina Domschke
- e Department of Psychiatry, Psychosomatics and Psychotherapy , University of Wuerzburg , Germany
| | - Naomi A Fineberg
- f Hertfordshire Partnership University NHS Foundation Trust and University of Hertfordshire , Rosanne House, Parkway , Welwyn Garden City , UK
| | - Edna Grünblatt
- e Department of Psychiatry, Psychosomatics and Psychotherapy , University of Wuerzburg , Germany ;,g Neuroscience Center Zurich , University of Zurich and the ETH Zurich , Zürich , Switzerland ;,h Department of Child and Adolescent Psychiatry and Psychotherapy , Psychiatric Hospital, University of Zurich , Zürich , Switzerland ;,i Zurich Center for Integrative Human Physiology , University of Zurich , Switzerland
| | - Marek Jarema
- j Third Department of Psychiatry , Institute of Psychiatry and Neurology , Warszawa , Poland
| | - Eduard Maron
- k North Estonia Medical Centre, Department of Psychiatry , Tallinn , Estonia ;,l Department of Psychiatry , University of Tartu , Estonia ;,m Faculty of Medicine, Department of Medicine, Centre for Neuropsychopharmacology, Division of Brain Sciences , Imperial College London , UK
| | - David Nutt
- m Faculty of Medicine, Department of Medicine, Centre for Neuropsychopharmacology, Division of Brain Sciences , Imperial College London , UK
| | - Stefano Pini
- c Department of Clinical and Experimental Medicine , Section of Psychiatry, University of Pisa , Italy
| | - Matilde M Vaghi
- n Department of Psychology and Behavioural and Clinical Neuroscience Institute , University of Cambridge , UK
| | - Adam Wichniak
- j Third Department of Psychiatry , Institute of Psychiatry and Neurology , Warszawa , Poland
| | - Gwyneth Zai
- n Department of Psychology and Behavioural and Clinical Neuroscience Institute , University of Cambridge , UK ;,o Neurogenetics Section, Centre for Addiction & Mental Health , Toronto , Canada ;,p Frederick W. Thompson Anxiety Disorders Centre, Department of Psychiatry, Sunnybrook Health Sciences Centre , Toronto , Canada ;,q Institute of Medical Science and Department of Psychiatry, University of Toronto , Toronto , Canada
| | - Peter Riederer
- e Department of Psychiatry, Psychosomatics and Psychotherapy , University of Wuerzburg , Germany ;,g Neuroscience Center Zurich , University of Zurich and the ETH Zurich , Zürich , Switzerland ;,h Department of Child and Adolescent Psychiatry and Psychotherapy , Psychiatric Hospital, University of Zurich , Zürich , Switzerland
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Caravaggio F, Fervaha G, Chung JK, Gerretsen P, Nakajima S, Plitman E, Iwata Y, Wilson A, Graff-Guerrero A. Exploring personality traits related to dopamine D2/3 receptor availability in striatal subregions of humans. Eur Neuropsychopharmacol 2016; 26:644-52. [PMID: 26944295 PMCID: PMC4805526 DOI: 10.1016/j.euroneuro.2016.02.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 02/12/2016] [Accepted: 02/20/2016] [Indexed: 12/11/2022]
Abstract
While several studies have examined how particular personality traits are related to dopamine D2/3 receptor (D2/3R) availability in the striatum of humans, few studies have reported how multiple traits measured in the same persons are differentially related to D2/3R availability in different striatal sub-regions. We examined how personality traits measured with the Karolinska Scales of Personality are related to striatal D2/3R availability measured with [(11)C]-raclopride in 30 healthy humans. Based on previous the literature, five personality traits were hypothesized to be most likely related to D2/3R availability: impulsiveness, monotony avoidance, detachment, social desirability, and socialization. We found self-reported impulsiveness was negatively correlated with D2/3R availability in the ventral striatum and globus pallidus. After controlling for age and gender, monotony avoidance was also negatively correlated with D2/3R availability in the ventral striatum and globus pallidus. Socialization was positively correlated with D2/3R availability in the ventral striatum and putamen. After controlling for age and gender, the relationship between socialization and D2/3R availability in these regions survived correction for multiple comparisons (p-threshold=.003). Thus, within the same persons, different personality traits are differentially related to in vivo D2/3R availability in different striatal sub-regions.
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Affiliation(s)
- Fernando Caravaggio
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8
| | - Gagan Fervaha
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8
| | - Jun Ku Chung
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8
| | - Philip Gerretsen
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8; Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, Canada M5T 1R8
| | - Shinichiro Nakajima
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, Canada M5T 1R8
| | - Eric Plitman
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8
| | - Yusuke Iwata
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8
| | - Alan Wilson
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8; Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, Canada M5T 1R8
| | - Ariel Graff-Guerrero
- Research Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; Institute of Medical Science, University of Toronto, 2374 Medical Sciences Building, 1 King׳s College Circle, Toronto, Ontario, Canada M5S 1A8; Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, Canada M5T 1R8.
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Broft A, Slifstein M, Osborne J, Kothari P, Morim S, Shingleton R, Kenney L, Vallabhajosula S, Attia E, Martinez D, Timothy Walsh B. Striatal dopamine type 2 receptor availability in anorexia nervosa. Psychiatry Res 2015; 233:380-7. [PMID: 26272038 PMCID: PMC5055757 DOI: 10.1016/j.pscychresns.2015.06.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/23/2015] [Accepted: 06/27/2015] [Indexed: 12/31/2022]
Abstract
The neurobiology of anorexia nervosa remains incompletely understood. Here we utilized PET imaging with the radiotracer [(11)C]raclopride to measure striatal dopamine type 2 (D2) receptor availability in patients with anorexia nervosa. 25 women with anorexia nervosa who were receiving treatment in an inpatient program participated, as well as 25 control subjects. Patients were scanned up to two times with the PET tracer [(11)C]raclopride: once while underweight, and once upon weight restoration. Control subjects underwent one PET scan. In the primary analyses, there were no significant differences between underweight patients (n=21) and control subjects (n=25) in striatal D2 receptor binding potential. Analysis of subregions (sensorimotor striatum, associative striatum, limbic striatum) did not reveal differences between groups. In patients completing both scans (n=15), there were no detectable changes in striatal D2 receptor binding potential after weight restoration. In this sample, there were no differences in striatal D2 receptor binding potential between patients with anorexia nervosa and control subjects. Weight restoration was not associated with a change in striatal D2 receptor binding. These findings suggest that disturbances in reward processing in this disorder are not attributable to abnormal D2 receptor characteristics, and that other reward-related neural targets may be of greater relevance.
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Affiliation(s)
- Allegra Broft
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA.
| | - Mark Slifstein
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA
| | - Joseph Osborne
- Weill Cornell Medical College, Department of Radiology, New York, NY, USA; Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY, USA
| | - Paresh Kothari
- Weill Cornell Medical College, Department of Radiology, New York, NY, USA
| | - Simon Morim
- Weill Cornell Medical College, Department of Radiology, New York, NY, USA
| | - Rebecca Shingleton
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA; Boston University, Department of Psychology, Boston, MA, USA
| | - Lindsay Kenney
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA
| | | | - Evelyn Attia
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA
| | - Diana Martinez
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA
| | - B Timothy Walsh
- Columbia University Medical Center/New York State Psychiatric Institute, Department of Psychiatry, 1051 Riverside Drive, New York, NY, USA
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An urgent need for experimental animal model of autism in drug development. Ann Neurosci 2015; 22:44-9. [PMID: 26124551 PMCID: PMC4410529 DOI: 10.5214/ans.0972.7531.220210] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 02/19/2015] [Accepted: 03/04/2015] [Indexed: 12/16/2022] Open
Abstract
Construct, face and predictive validities are necessary for any disease model. Although rodent models are used to investigate the neurobiology of autism, however, till date there is no such ideal animal model which can fulfill all the above said validities. Available drug therapy to treat autism is very limited and less effective. In this review, we summarize the work done with rodent models of autism and highlight different validities. We found that, very few studies have studied all the validities in a single study and none of the study fulfilled all the validities. We also reviewed the drugs used in the treatment of autism. Here we propose the limitations of available animal models. We also propose the urgent need of additional models to fulfill all the validities and to understand autism in a better way.
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35
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Lower availability of striatal dopamine transporter in generalized anxiety disorder: a preliminary two-ligand SPECT study. Int Clin Psychopharmacol 2015; 30:175-8. [PMID: 25647452 DOI: 10.1097/yic.0000000000000067] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Dopamine and serotonin have been indirectly found to be associated with generalized anxiety disorder (GAD). The aims of this study were to examine the availabilities of the striatal dopamine transporter (DAT) and the midbrain serotonin transporter (SERT) in patients with GAD. 12 patients with GAD and 12 sex-matched, age-matched, and smoking status-matched healthy controls were recruited. The availabilities of DAT and SERT were approximated using single-photon emission computed tomography, with [Tc]TRODAT-1 and [I]ADAM as the ligands. There were several missing data for six participants with GAD in the ADAM study because of a lack of the radioligand at the time of the experiment. The DAT availability in the striatum was significantly lower in the patients with GAD than in the healthy controls. However, the SERT availability did not differ between the two groups. The results with respect to the striatal DAT level suggested a potential role in the pathophysiology of GAD.
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36
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Nutt DJ, Lingford-Hughes A, Erritzoe D, Stokes PRA. The dopamine theory of addiction: 40 years of highs and lows. Nat Rev Neurosci 2015; 16:305-12. [PMID: 25873042 DOI: 10.1038/nrn3939] [Citation(s) in RCA: 350] [Impact Index Per Article: 38.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
For several decades, addiction has come to be viewed as a disorder of the dopamine neurotransmitter system; however, this view has not led to new treatments. In this Opinion article, we review the origins of the dopamine theory of addiction and discuss the ability of addictive drugs to elicit the release of dopamine in the human striatum. There is robust evidence that stimulants increase striatal dopamine levels and some evidence that alcohol may have such an effect, but little evidence, if any, that cannabis and opiates increase dopamine levels. Moreover, there is good evidence that striatal dopamine receptor availability and dopamine release are diminished in individuals with stimulant or alcohol dependence but not in individuals with opiate, nicotine or cannabis dependence. These observations have implications for understanding reward and treatment responses in various addictions.
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Affiliation(s)
- David J Nutt
- Centre for Neuropsychopharmacology, Division of Brain Sciences, Burlington Danes Building, Imperial College London, London W12 0NN, UK
| | - Anne Lingford-Hughes
- Centre for Neuropsychopharmacology, Division of Brain Sciences, Burlington Danes Building, Imperial College London, London W12 0NN, UK
| | - David Erritzoe
- Centre for Neuropsychopharmacology, Division of Brain Sciences, Burlington Danes Building, Imperial College London, London W12 0NN, UK
| | - Paul R A Stokes
- 1] Centre for Neuropsychopharmacology, Division of Brain Sciences, Burlington Danes Building, Imperial College London, London W12 0NN, UK. [2] Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London, London SE5 8AF, UK
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Abstract
Social anxiety disorder (SAD) is a condition characterized by pervasiveness and impairment in social functioning, with a prevalence in the general population between 1.9% and 12.1%. The most consistent findings on its neurobiological underpinnings involve a wide range of neurotransmitters (serotonin, norepinephrine, glutamate, and GABA) and neuropeptides (oxytocin), but no comprehensive hypothesis is yet available. In particular, oxytocin is becoming increasingly established as a "prosocial neuropeptide" and, as such, is a major focus of current research, with a great range of therapeutic applications including SAD treatment. Specifically, the amygdala plays a pivotal role in conditioning and processing of fear, and exaggerated amygdala responses in SAD patients have been observed during various social-emotional stimuli. In addition to the amygdala, other brain areas of interest in SAD-related circuitry are represented by the medial prefrontal cortex, dorsal raphe, striatum, locus coeruleus, prefrontal cortex, insular cortex, and anterior cingulate cortex. The aim of this review is to provide an update on neurobiological correlates of SAD, with a special focus on neurotransmitters and brain areas possibly involved, and suggestions for future research that could lead to more specific therapeutic interventions.
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Wigton R, Radua J, Allen P, Averbeck B, Meyer-Lindenberg A, McGuire P, Shergill SS, Fusar-Poli P. Neurophysiological effects of acute oxytocin administration: systematic review and meta-analysis of placebo-controlled imaging studies. J Psychiatry Neurosci 2015; 40:E1-22. [PMID: 25520163 PMCID: PMC4275335 DOI: 10.1503/jpn.130289] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Oxytocin (OXT) plays a prominent role in social cognition and may have clinical applications for disorders such as autism, schizophrenia and social anxiety. The neural basis of its mechanism of action remains unclear. METHODS We conducted a systematic literature review of placebo-controlled imaging studies using OXT as a pharmacological manipulator of brain activity. RESULTS We identified a total of 21 studies for inclusion in our review, and after applying additional selection criteria, 11 of them were included in our fMRI voxel-based meta-analysis. The results demonstrate consistent alterations in activation of brain regions, including the temporal lobes and insula, during the processing of social stimuli, with some variation dependent on sex and task. The meta-analysis revealed significant left insular hyperactivation after OXT administration, suggesting a potential modulation of neural circuits underlying emotional processing. LIMITATIONS This quantitative review included only a limited number of studies, thus the conclusions of our analysis should be interpreted cautiously. This limited sample size precluded a more detailed exploration of potential confounding factors, such as sex or other demographic factors, that may have affected our meta-analysis. CONCLUSION Oxytocin has a wide range of effects over neural activity in response to social and emotional processing, which is further modulated by sex and task specificity. The magnitude of this neural activation is largest in the temporal lobes, and a meta-analysis across all tasks and both sexes showed that the left insula demonstrated the most robust activation to OXT administration.
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Affiliation(s)
- Rebekah Wigton
- Correspondence to: R. Wigton, Cognition and Schizophrenia Imaging Laboratory, Institute of Psychiatry, King’s College London, De Crespigny Park Rd., London, UK, SE5 8AF;
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Neuroimaging in social anxiety disorder—A meta-analytic review resulting in a new neurofunctional model. Neurosci Biobehav Rev 2014; 47:260-80. [PMID: 25124509 DOI: 10.1016/j.neubiorev.2014.08.003] [Citation(s) in RCA: 237] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Revised: 06/26/2014] [Accepted: 08/01/2014] [Indexed: 01/30/2023]
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40
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Hermesh H, Schapir L, Marom S, Skopski R, Barnea E, Weizman A, Winocur E. Bruxism and oral parafunctional hyperactivity in social phobia outpatients. J Oral Rehabil 2014; 42:90-7. [DOI: 10.1111/joor.12235] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2014] [Indexed: 11/28/2022]
Affiliation(s)
- H. Hermesh
- Geha Mental Health Center; Petah Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - L. Schapir
- Geha Mental Health Center; Petah Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - S. Marom
- Geha Mental Health Center; Petah Tikva Israel
| | - R. Skopski
- Department of Oral Rehabilitation; The Maurice and Gabriela Goldschleger School of Dental Medicine; Tel Aviv University; Tel Aviv Israel
| | - E. Barnea
- Geha Mental Health Center; Petah Tikva Israel
| | - A. Weizman
- Geha Mental Health Center; Petah Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Felsenstein Medical Research Center; Rabin Medical Center; Sackler Faculty of Medicine; Tel Aviv University; Petah Tikva Israel
| | - E. Winocur
- Department of Oral Rehabilitation; The Maurice and Gabriela Goldschleger School of Dental Medicine; Tel Aviv University; Tel Aviv Israel
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Guyer AE, Benson B, Choate VR, Bar-Haim Y, Perez-Edgar K, Jarcho JM, Pine DS, Ernst M, Fox NA, Nelson EE. Lasting associations between early-childhood temperament and late-adolescent reward-circuitry response to peer feedback. Dev Psychopathol 2014; 26:229-43. [PMID: 24444176 PMCID: PMC4096565 DOI: 10.1017/s0954579413000941] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Behavioral inhibition, a temperament identifiable in infancy, is associated with heightened withdrawal from social encounters. Prior studies raise particular interest in the striatum, which responds uniquely to monetary gains in behaviorally inhibited children followed into adolescence. Although behavioral manifestations of inhibition are expressed primarily in the social domain, it remains unclear whether observed striatal alterations to monetary incentives also extend to social contexts. In the current study, imaging data were acquired from 39 participants (17 males, 22 females; ages 16-18 years) characterized since infancy on measures of behavioral inhibition. A social evaluation task was used to assess neural response to anticipation and receipt of positive and negative feedback from novel peers, classified by participants as being of high or low interest. As with monetary rewards, striatal response patterns differed during both anticipation and receipt of social reward between behaviorally inhibited and noninhibited adolescents. The current results, when combined with prior findings, suggest that early-life temperament predicts altered striatal response in both social and nonsocial contexts and provide support for continuity between temperament measured in early childhood and neural response to social signals measured in late adolescence and early adulthood.
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Boehme S, Ritter V, Tefikow S, Stangier U, Strauss B, Miltner WHR, Straube T. Brain activation during anticipatory anxiety in social anxiety disorder. Soc Cogn Affect Neurosci 2013; 9:1413-8. [PMID: 23938870 DOI: 10.1093/scan/nst129] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Exaggerated anticipatory anxiety during expectation of performance-related situations is an important feature of the psychopathology of social anxiety disorder (SAD). The neural basis of anticipatory anxiety in SAD has not been investigated in controlled studies. The current study used functional magnetic resonance imaging (fMRI) to investigate the neural correlates during the anticipation of public and evaluated speaking vs a control condition in 17 SAD patients and 17 healthy control subjects. FMRI results show increased activation of the insula and decreased activation of the ventral striatum in SAD patients, compared to control subjects during anticipation of a speech vs the control condition. In addition, an activation of the amygdala in SAD patients during the first half of the anticipation phase in the speech condition was observed. Finally, the amount of anticipatory anxiety of SAD patients was negatively correlated to the activation of the ventral striatum. This suggests an association between incentive function, motivation and anticipatory anxiety when SAD patients expect a performance situation.
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Affiliation(s)
- Stephanie Boehme
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
| | - Viktoria Ritter
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
| | - Susan Tefikow
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
| | - Ulrich Stangier
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
| | - Bernhard Strauss
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
| | - Wolfgang H R Miltner
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
| | - Thomas Straube
- Department of Biological and Clinical Psychology, Friedrich Schiller University Jena, Am Steiger 3/1, D-07743 Jena, Department of Clinical Psychology and Psychotherapy, Goethe-University Frankfurt, Varrentrappstr. 40-42, D-60486 Frankfurt am Main, Institute of Psychosocial Medicine and Psychotherapy, Jena University Hospital-Friedrich Schiller University, Stoystr. 3, D-07740 Jena and Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Von-Esmarch-Str. 52, D-48149 Muenster, Germany
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Zarrindast MR, Nasehi M, Pournaghshband M, Ghorbani Yekta B. Dopaminergic system in CA1 modulates MK-801 induced anxiolytic-like responses. Pharmacol Biochem Behav 2012; 103:102-10. [DOI: 10.1016/j.pbb.2012.07.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 07/20/2012] [Accepted: 07/23/2012] [Indexed: 11/26/2022]
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Di Giuda D, Camardese G, Bentivoglio AR, Cocciolillo F, Guidubaldi A, Pucci L, Bruno I, Janiri L, Giordano A, Fasano A. Dopaminergic dysfunction and psychiatric symptoms in movement disorders: a 123I-FP-CIT SPECT study. Eur J Nucl Med Mol Imaging 2012; 39:1937-48. [PMID: 22976499 DOI: 10.1007/s00259-012-2232-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 08/09/2012] [Indexed: 01/07/2023]
Abstract
PURPOSE Psychiatric symptoms frequently occur in patients with movement disorders. They are not a mere reaction to chronic disability, but most likely due to a combination of psychosocial factors and biochemical dysfunction underlying the movement disorder. We assessed dopamine transporter (DAT) availability by means of (123)I-FP-CIT SPECT, and motor and psychiatric features in patients with Parkinson's disease, primary dystonia and essential tremor, exploring the association between SPECT findings and symptom severity. METHODS Enrolled in the study were 21 patients with Parkinson's disease, 14 patients with primary dystonia and 15 patients with essential tremor. The severity of depression symptoms was assessed using the Hamilton depression rating scale, anxiety levels using the Hamilton anxiety rating scale and hedonic tone impairment using the Snaith-Hamilton pleasure scale. Specific (123)I-FP-CIT binding in the caudate and putamen was calculated based on ROI analysis. The control group included 17 healthy subjects. RESULTS As expected, DAT availability was significantly decreased in patients with Parkinson's disease, whereas in essential tremor and dystonia patients it did not differ from that observed in the control group. In Parkinson's disease patients, an inverse correlation between severity of depression symptoms and DAT availability in the left caudate was found (r = -0.63, p = 0.002). In essential tremor patients, levels of anxiety symptoms were inversely correlated with DAT availability in the left caudate (r = -0.69, p = 0.004). In dystonia patients, the severities of both anxiety and depression symptoms were inversely associated with DAT availability in the left putamen (r = -0.71, p = 0.004, and r = -0.75, p = 0.002, respectively). There were no correlations between psychometric scores and (123)I-FP-CIT uptake ratios in healthy subjects. CONCLUSION We found association between presynaptic dopaminergic function and affective symptoms in different movement disorders. Interestingly, the inverse correlation was present in each group of patients, supporting the fascinating perspective that common subcortical substrates may be involved in both anxiety and depression dimensions and movement disorders.
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Affiliation(s)
- Daniela Di Giuda
- Istituto di Medicina Nucleare, Università Cattolica del Sacro Cuore, Rome, Italy.
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Warwick JM, Carey PD, Cassimjee N, Lochner C, Hemmings S, Moolman-Smook H, Beetge E, Dupont P, Stein DJ. Dopamine transporter binding in social anxiety disorder: the effect of treatment with escitalopram. Metab Brain Dis 2012; 27:151-8. [PMID: 22350963 DOI: 10.1007/s11011-012-9280-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 02/01/2012] [Indexed: 11/24/2022]
Abstract
Social anxiety disorder (SAD) is characterised by fear of social or performance situations where the individual is exposed to unfamiliar people or to possible scrutiny by others. The literature on dopamine ligands and dopamine genotypes in SAD is however inconsistent. In this study we measured the effects of SSRI pharmacotherapy on dopamine transporter (DAT) binding in patients with SAD, also addressing variability in DAT genotype. Adult subjects meeting DSM-IV criteria for generalised SAD were studied before and after 12 weeks of pharmacotherapy with the selective serotonin reuptake inhibitor (SSRI) escitalopram. DAT single photon emission computed tomography (SPECT) using (123)I-FP-CIT was performed at baseline, and repeated at 12 weeks. Striatal DAT binding was analysed for changes following therapy, and for correlations with clinical efficacy, in the whole group as well as for a subgroup with the A10/A10 DAT genotype. The study included 14 subjects (9 male, 5 female) with a mean (SD) age of 41 (±13) years. The subjects' Liebowitz Social Anxiety Scale (LSAS) score was significantly decreased following pharmacotherapy. In the combined group the left caudate and left putamen showed clusters of increased DAT binding after therapy. The left caudate changes were also observed in the subgroup of 9 A10/A10 homozygotes. However no correlation was found between improved symptoms and DAT binding. The changes found in DAT binding in the caudate and putamen may be due to serotonergic activation of dopamine function by SSRI therapy. This is consistent with previous work indicating decreased DAT binding in SAD, and increased DAT binding after SSRI administration.
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Affiliation(s)
- J M Warwick
- Nuclear Medicine, Faculty of Health Sciences, Stellenbosch University, Tygerberg, Cape Town, South Africa.
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Changes in dopamine D2-receptor binding are associated to symptom reduction after psychotherapy in social anxiety disorder. Transl Psychiatry 2012; 2:e120. [PMID: 22832965 PMCID: PMC3365259 DOI: 10.1038/tp.2012.40] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The dopamine system has been suggested to play a role in social anxiety disorder (SAD), partly based on molecular imaging studies showing reduced levels of striatal dopaminergic markers in patients compared with control subjects. However, the dopamine system has not been examined in frontal and limbic brain regions proposed to be central in the pathophysiology of SAD. In the present study, we hypothesized that extrastriatal dopamine D2-receptor (D2-R) levels measured using positron emission tomography (PET) would predict symptom reduction after cognitive behavior therapy (CBT). Nine SAD patients were examined using high-resolution PET and the high-affinity D2-R antagonist radioligand [(11)C]FLB 457, before and after 15 weeks of CBT. Symptom levels were assessed using the anxiety subscale of Liebowitz Social Anxiety Scale (LSAS(anx)). At posttreatment, there was a statistically significant reduction of social anxiety symptoms (P<0.005). Using a repeated measures analysis of covariance, significant effects for time and time × LSAS(anx) change on D2-R-binding potential (BP(ND)) were shown (P<0.05). In a subsequent region-by-region analysis, negative correlations between change in D2-R BP(ND) and LSAS(anx) change were found for medial prefrontal cortex and hippocampus (P<0.05). This is the first study to report a direct relationship between symptom change after psychological treatment and a marker of brain neurotransmission. Using an intra-individual comparison design, the study supports a role for the dopamine system in cortical and limbic brain regions in the pathophysiology of SAD.
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Enter D, Colzato LS, Roelofs K. Dopamine transporter polymorphisms affect social approach-avoidance tendencies. GENES BRAIN AND BEHAVIOR 2012; 11:671-6. [DOI: 10.1111/j.1601-183x.2012.00791.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Miskovic V, Schmidt LA. Social fearfulness in the human brain. Neurosci Biobehav Rev 2012; 36:459-78. [DOI: 10.1016/j.neubiorev.2011.08.002] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 06/29/2011] [Accepted: 08/03/2011] [Indexed: 01/09/2023]
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Trainor BC. Stress responses and the mesolimbic dopamine system: social contexts and sex differences. Horm Behav 2011; 60:457-69. [PMID: 21907202 PMCID: PMC3217312 DOI: 10.1016/j.yhbeh.2011.08.013] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 08/19/2011] [Accepted: 08/20/2011] [Indexed: 10/17/2022]
Abstract
Organisms react to threats with a variety of behavioral, hormonal, and neurobiological responses. The study of biological responses to stress has historically focused on the hypothalamic-pituitary-adrenal axis, but other systems such as the mesolimbic dopamine system are involved. Behavioral neuroendocrinologists have long recognized the importance of the mesolimbic dopamine system in mediating the effects of hormones on species specific behavior, especially aspects of reproductive behavior. There has been less focus on the role of this system in the context of stress, perhaps due to extensive data outlining its importance in reward or approach-based contexts. However, there is steadily growing evidence that the mesolimbic dopamine neurons have critical effects on behavioral responses to stress. Most of these data have been collected from experiments using a small number of animal model species under a limited set of contexts. This approach has led to important discoveries, but evidence is accumulating that mesolimbic dopamine responses are context dependent. Thus, focusing on a limited number of species under a narrow set of controlled conditions constrains our understanding of how the mesolimbic dopamine system regulates behavior in response to stress. Both affiliative and antagonistic social interactions have important effects on mesolimbic dopamine function, and there is preliminary evidence for sex differences as well. This review will highlight the benefits of expanding this approach, and focus on how social contexts and sex differences can impact mesolimbic dopamine stress responses.
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Affiliation(s)
- Brian C Trainor
- Department of Psychology, University of California, 1 Shields Ave., Davis, CA 95616, USA
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The dopamine hypothesis of social support. Med Hypotheses 2011; 77:753-5. [DOI: 10.1016/j.mehy.2011.07.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/08/2011] [Accepted: 07/18/2011] [Indexed: 01/12/2023]
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