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Chaby LE, Lasseter HC, Contrepois K, Salek RM, Turck CW, Thompson A, Vaughan T, Haas M, Jeromin A. Correction: Chaby et al. Cross-Platform Evaluation of Commercially Targeted and Untargeted Metabolomics Approaches to Optimize the Investigation of Psychiatric Disease. Metabolites 2021, 11, 609. Metabolites 2023; 13:933. [PMID: 37623909 PMCID: PMC10456293 DOI: 10.3390/metabo13080933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 08/26/2023] Open
Abstract
In the original publication [...].
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Affiliation(s)
- Lauren E. Chaby
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Heather C. Lasseter
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Kévin Contrepois
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Reza M. Salek
- International Agency for Research on Cancer, Nutrition and Metabolism Branch, World Health Organisation, 150 Cours Albert Thomas, CEDEX 08, 69372 Lyon, France;
| | - Christoph W. Turck
- Max Planck Institute of Psychiatry, Proteomics and Biomarkers, 80804 Munich, Germany;
| | - Andrew Thompson
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Timothy Vaughan
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Magali Haas
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Andreas Jeromin
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
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Chaby LE, Lasseter HC, Contrepois K, Salek RM, Turck CW, Thompson A, Vaughan T, Haas M, Jeromin A. Cross-Platform Evaluation of Commercially Targeted and Untargeted Metabolomics Approaches to Optimize the Investigation of Psychiatric Disease. Metabolites 2021; 11:609. [PMID: 34564425 PMCID: PMC8466258 DOI: 10.3390/metabo11090609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022] Open
Abstract
Metabolomics methods often encounter trade-offs between quantification accuracy and coverage, with truly comprehensive coverage only attainable through a multitude of complementary assays. Due to the lack of standardization and the variety of metabolomics assays, it is difficult to integrate datasets across studies or assays. To inform metabolomics platform selection, with a focus on posttraumatic stress disorder (PTSD), we review platform use and sample sizes in psychiatric metabolomics studies and then evaluate five prominent metabolomics platforms for coverage and performance, including intra-/inter-assay precision, accuracy, and linearity. We found performance was variable between metabolite classes, but comparable across targeted and untargeted approaches. Within all platforms, precision and accuracy were highly variable across classes, ranging from 0.9-63.2% (coefficient of variation) and 0.6-99.1% for accuracy to reference plasma. Several classes had high inter-assay variance, potentially impeding dissociation of a biological signal, including glycerophospholipids, organooxygen compounds, and fatty acids. Coverage was platform-specific and ranged from 16-70% of PTSD-associated metabolites. Non-overlapping coverage is challenging; however, benefits of applying multiple metabolomics technologies must be weighed against cost, biospecimen availability, platform-specific normative levels, and challenges in merging datasets. Our findings and open-access cross-platform dataset can inform platform selection and dataset integration based on platform-specific coverage breadth/overlap and metabolite-specific performance.
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Affiliation(s)
- Lauren E. Chaby
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Heather C. Lasseter
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Kévin Contrepois
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Reza M. Salek
- International Agency for Research on Cancer, Nutrition and Metabolism Branch, World Health Organisation, 150 Cours Albert Thomas, CEDEX 08, 69372 Lyon, France;
| | - Christoph W. Turck
- Max Planck Institute of Psychiatry, Proteomics and Biomarkers, 80804 Munich, Germany;
| | - Andrew Thompson
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Timothy Vaughan
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Magali Haas
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
| | - Andreas Jeromin
- Cohen Veterans Bioscience, New York, NY 10018, USA; (L.E.C.); (H.C.L.); (A.T.); (T.V.); (M.H.)
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Lasseter HC, Provost AC, Chaby LE, Daskalakis NP, Haas M, Jeromin A. Cross-platform comparison of highly sensitive immunoassay technologies for cytokine markers: Platform performance in post-traumatic stress disorder and Parkinson's disease. Cytokine X 2020; 2:100027. [PMID: 33604555 PMCID: PMC7885879 DOI: 10.1016/j.cytox.2020.100027] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/25/2020] [Accepted: 04/10/2020] [Indexed: 12/14/2022] Open
Abstract
Cross-platform comparisons were conducted across five leading immunoassay platforms. Plasma and serum were obtained from healthy controls and clinical populations. Analytic parameters included sensitivity, precision, and performance correlation. Platform performance was highly variable, particularly for low-abundant cytokines. Findings highlight certain immunoassays should be prioritized in future research.
There is mounting evidence of systemic inflammation in post-traumatic stress disorder (PTSD) and Parkinson’s disease (PD), yet inconsistency and a lack of replicability in findings of putative biological markers have delayed progress in this space. Variability in performance between platforms may contribute to the lack of consensus in the biomarker literature, as has been seen for a number of psychiatric disorders, including PTSD. Thus, there is a need for high-performance, scalable, and validated platforms for the discovery and development of biomarkers of inflammation for use in drug development and as clinical diagnostics. To identify the best platform for use in future biomarker discovery efforts, we conducted a comprehensive cross-platform and cross-assay evaluation across five leading platform technologies. This initial assessment focused on four cytokines that have been implicated PTSD – interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, and interferon (IFN)-γ. To assess platform performance and understand likely measurements in individuals with brain disorders, serum and plasma samples were obtained from individuals with PTSD (n = 13) or Parkinson’s Disease (n = 14) as well as healthy controls (n = 5). We compared platform performance across a number of common analytic parameters, including assay precision, sensitivity, frequency of endogenous analyte detection (FEAD), correlation between platforms, and parallelism in measurement of cytokines using a serial dilution series. The single molecule array (Simoa™) ultra-sensitive platform (Quanterix), MESO V-Plex (Mesoscale Discovery), and Luminex xMAP® (Myriad) were conducted by their respective vendors, while Luminex® and Quantikine® high-sensitivity ELISA assays were evaluated by R&D System’s Biomarker Testing Services. The assay with the highest sensitivity in detecting endogenous analytes across all analytes and clinical populations (i.e. the highest FEAD), was the Simoa™ platform. In contrast, more variable performance was observed for MESO V-plex, R&D Luminex® and Quantikine®, while Myriad’s Luminex xMAP® exhibited low FEAD across all analytes and samples. Simoa™ also demonstrated high precision in detecting endogenous cytokines, as reflected in < 20 percent coefficient of variance (%CV) across replicate runs for samples from the healthy controls, PTSD patients, and PD patients. In contrast, MESO V-Plex, R&D Luminex® and Quantikine® had variable performance in terms of precision across cytokines. Myriad Luminex xMAP® could not be included in precision estimates because the vendor did not run samples in duplicate. For cross-platform performance comparisons, the highest cross-platform correlations were observed for IL-6 such that all platforms – except for Myriad’s Luminex xMAP® – had strong correlations with one another in measurements of IL-6 (r range = 0.59 – 0.86). For the other cytokines, there was low to no correlation across platforms, such that reported measurements of IL-1β, TNF-α, and IFN-γ varied across assays. Taken together, these findings provide novel evidence that the choice of immunoassay could greatly impact reported cytokine findings. The current study provides crucial information on the variability in performance between platforms and across immunoassays that may help inform the selection of assay in future research studies. Further, the results emphasize the need for performing comparative evaluations of immunoassays as new technologies emerge over time, particularly given the lack of reference standards for the quantitative assessments of cytokines.
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Key Words
- BLQ, below limit of quantification
- Biomarker
- CV, coefficient of variance
- Cytokine
- FEAD, frequency of endogenous analyte detection
- IFN-γ, interferon-γ
- IL-1β, interleukin-1β
- IL-6, interleukin-6
- IUGB, Indiana University Genetics Biobank
- Immunoassay
- LLOD, lower limit of detection
- LLOQ, lower limit of quantification
- MSD, Mesoscale Discovery
- PBMC, peripheral blood mononuclear cells
- PD, Parkinson’s disease
- PMA, phorbol myristate acetate
- PTSD, post-traumatic stress disorder
- Parkinson’s disease
- Post-traumatic stress disorder
- TNF-α, tumor necrosis factor-α
- ULOD, upper limit of detection
- ULOQ, upper limit of quantification
- Ultrasensitive technologies
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Affiliation(s)
- Heather C Lasseter
- Cohen Veterans Bioscience Inc., 535 8th Avenue, 12th Floor, New York, NY 10018, United States
| | - Allison C Provost
- Cohen Veterans Bioscience Inc., 535 8th Avenue, 12th Floor, New York, NY 10018, United States
| | - Lauren E Chaby
- Cohen Veterans Bioscience Inc., 535 8th Avenue, 12th Floor, New York, NY 10018, United States
| | - Nikolaos P Daskalakis
- Cohen Veterans Bioscience Inc., 535 8th Avenue, 12th Floor, New York, NY 10018, United States
| | - Magali Haas
- Cohen Veterans Bioscience Inc., 535 8th Avenue, 12th Floor, New York, NY 10018, United States
| | - Andreas Jeromin
- Cohen Veterans Bioscience Inc., 535 8th Avenue, 12th Floor, New York, NY 10018, United States
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Jeromin A, Lasseter HC, Provost AC, Daskalakis NP, Etkin A, Gehrman P, Lancashire L, Marx BP, McGlinchey R, Haas M. Driving Progress in Posttraumatic Stress Disorder Biomarkers. Biol Psychiatry 2020; 87:e13-e14. [PMID: 31623824 DOI: 10.1016/j.biopsych.2019.07.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 07/21/2019] [Accepted: 07/23/2019] [Indexed: 10/25/2022]
Affiliation(s)
| | | | | | - Nikolaos P Daskalakis
- Cohen Veterans Bioscience Inc., New York, New York; Department of Psychiatry, McLean Hospital, Harvard Medical School, Boston, Massachusetts
| | - Amit Etkin
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California; Wu Tsai Neurosciences Institute, Stanford University, Stanford, California; Sierra Pacific Mental Illness, Research, Education, and Clinical Center, Veterans Affairs Palo Alto Healthcare System, Palo Alto, California
| | - Philip Gehrman
- Department of Psychiatry, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - Brian P Marx
- National Center for PTSD, Veterans Affairs Boston Healthcare System, Boston, Massachusetts; Department of Psychiatry, Boston University School of Medicine, Boston, Massachusetts
| | - Regina McGlinchey
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts; Translational Research Center for TBI and Stress Disorders, Veterans Affairs Boston Healthcare System, Boston, Massachusetts; Geriatric Research, Education, and Clinical Center, Veterans Affairs Boston Healthcare System, Boston, Massachusetts
| | - Magali Haas
- Cohen Veterans Bioscience Inc., New York, New York
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Xie X, Lasseter HC, Ramirez DR, Ponds KL, Wells AM, Fuchs RA. Subregion-specific role of glutamate receptors in the nucleus accumbens on drug context-induced reinstatement of cocaine-seeking behavior in rats. Addict Biol 2012; 17:287-99. [PMID: 21521425 PMCID: PMC4384648 DOI: 10.1111/j.1369-1600.2011.00325.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The functional integrity of the nucleus accumbens (NAC) core and shell is necessary for contextual cocaine-seeking behavior in the reinstatement animal model of drug relapse; however, the neuropharmacological mechanisms underlying this phenomenon are poorly understood. The present study evaluated the contribution of metabotropic glutamate receptor subtype 1 (mGluR1) and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA)/kainate receptor populations to drug context-induced reinstatement of cocaine-seeking behavior. Rats were trained to lever press for un-signaled cocaine infusions in a distinct context followed by extinction training in a different context. Cocaine-seeking behavior (non-reinforced active lever pressing) was then assessed in the previously cocaine-paired and extinction contexts after JNJ16259685 (mGluR1 antagonist: 0.0, 0.6, or 30 pg/0.3 µl/hemisphere) or CNQX (AMPA/kainate receptor antagonist: 0.0, 0.03, or 0.3 µg/0.3 µl /hemisphere) administration into the NAC core, medial or lateral NAC shell, or the ventral caudate-putamen (vCPu, anatomical control). JNJ16259685 or CNQX in the NAC core dose-dependently impaired contextual cocaine-seeking behavior relative to vehicle. Conversely, CNQX, but not JNJ16259685, in the lateral or medial NAC shell attenuated, whereas CNQX or JNJ16259685 in vCPu failed to inhibit, this behavior. The manipulations failed to alter instrumental behavior in the extinction context, general motor activity or food-reinforced instrumental behavior in control experiments. Thus, glutamate-mediated changes in drug context-induced motivation for cocaine involve distinct neuropharmacological mechanisms within the core and shell subregions of the NAC, with the stimulation of mGlu1 and AMPA/kainate receptors in the NAC core and the stimulation of AMPA/kainate, but not mGlu1, receptors in the NAC shell being necessary for this phenomenon.
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Affiliation(s)
- Xiaohu Xie
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Heather C. Lasseter
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Donna R. Ramirez
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - KaiCee L. Ponds
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Audrey M. Wells
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Rita A. Fuchs
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
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Wells AM, Lasseter HC, Xie X, Cowhey KE, Reittinger AM, Fuchs RA. Interaction between the basolateral amygdala and dorsal hippocampus is critical for cocaine memory reconsolidation and subsequent drug context-induced cocaine-seeking behavior in rats. Learn Mem 2011; 18:693-702. [PMID: 22005750 DOI: 10.1101/lm.2273111] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Contextual stimulus control over instrumental drug-seeking behavior relies on the reconsolidation of context-response-drug associative memories into long-term memory storage following retrieval-induced destabilization. According to previous studies, the basolateral amygdala (BLA) and dorsal hippocampus (DH) regulate cocaine-related memory reconsolidation; however, it is not known whether these brain regions interact or independently control this phenomenon. To investigate this question, rats were trained to lever press for cocaine reinforcement in a distinct environmental context followed by extinction training in a different context. Rats were then briefly re-exposed to the cocaine-paired context to destabilize cocaine-related memories, or they were exposed to an unpaired context. Immediately thereafter, the rats received unilateral microinfusions of anisomycin (ANI) into the BLA plus baclofen/muscimol (B/M) into the contralateral (BLA/DH disconnection) or ipsilateral DH, or they received contralateral or ipsilateral microinfusions of vehicle. They then remained in their home cages overnight or for 21 d, followed by additional extinction training and a test of cocaine-seeking behavior (nonreinforced active lever responding). BLA/DH disconnection following re-exposure to the cocaine-paired context, but not the unpaired context, impaired subsequent drug context-induced cocaine-seeking behavior relative to vehicle or ipsilateral ANI + B/M treatment. Prolonged home cage stay elicited a time-dependent increase, or incubation, of drug-context-induced cocaine-seeking behavior, and BLA/DH disconnection inhibited this incubation effect despite some recovery of cocaine-seeking behavior. Thus, the BLA and DH interact to regulate the reconsolidation of cocaine-related associative memories, thereby facilitating the ability of drug-paired contexts to trigger cocaine-seeking behavior and contributing to the incubation of cocaine-seeking behavior.
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Affiliation(s)
- Audrey M Wells
- Department of Psychology, University of North Carolina, Chapel Hill, North Carolina 27599-3270, USA
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Abstract
Prefrontal cortical dysfunction is thought to underlie maladaptive behaviors displayed by chronic drug users, most notably the high propensity for relapse that severely impedes successful treatment of drug addiction. In animal models of drug relapse, exposure to drug-associated stimuli, small amounts of drug, and acute stressors powerfully reinstate drug seeking by critically engaging the prefrontal cortex, with the anterior cingulate, prelimbic, infralimbic, and orbitofrontal subregions making distinct contributions to drug seeking. Hence, from an addiction treatment perspective, it is necessary to fully explicate the involvement of the prefrontal cortex in drug relapse.
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Affiliation(s)
- Heather C Lasseter
- Department of Psychology, University of North Carolina, Chapel Hill, NC 27599-3270, USA
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Xie X, Ramirez DR, Lasseter HC, Fuchs RA. Effects of mGluR1 antagonism in the dorsal hippocampus on drug context-induced reinstatement of cocaine-seeking behavior in rats. Psychopharmacology (Berl) 2010; 208:1-11. [PMID: 19847405 PMCID: PMC4381836 DOI: 10.1007/s00213-009-1700-7] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Accepted: 10/05/2009] [Indexed: 10/20/2022]
Abstract
RATIONALE The functional integrity of the dorsal hippocampus (DH) is necessary for drug context-induced reinstatement of cocaine seeking. However, the neuropharmacological mechanisms of this phenomenon are poorly understood. OBJECTIVES Given the known significance of group I metabotropic glutamate receptors (mGluRs), including the mGluR1 subtype, in drug-induced behaviors, the present study was designed to evaluate the contribution of mGluR1s in the DH to drug context-induced reinstatement of extinguished cocaine-seeking behavior. METHODS Sprague-Dawley rats were trained to lever press for unsignaled cocaine infusions in a distinct environmental context (cocaine-paired context) followed by extinction training in a distinctly different environmental context (extinction context). Using a counterbalanced partial within-subjects testing design, rats were re-exposed to the cocaine-paired context or the extinction context while cocaine-seeking behavior (nonreinforced active lever pressing) was assessed. Prior to each test session, rats received bilateral microinfusions of the highly potent mGluR1-selective antagonist JNJ16259685 (0.6, 30, or 120 pg/0.5 microl per hemisphere) or vehicle into the DH or the overlying somatosensory cortex trunk region (SStr; anatomical control). RESULTS Intra-DH, but not intra-SStr, JNJ16259685 infusions dose dependently attenuated drug context-induced reinstatement of cocaine seeking relative to vehicle treatment, without attenuating instrumental behavior in the extinction context, general motor activity, or food-reinforced instrumental behavior in control experiments. CONCLUSIONS Stimulation of mGluR1s in the DH is necessary for incentive motivational and/or memory processes that contribute to drug context-induced cocaine-seeking behavior. These findings indicate that the mGluR1 is an interesting target from an addiction treatment perspective.
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Affiliation(s)
- Xiaohu Xie
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Donna R. Ramirez
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Heather C. Lasseter
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
| | - Rita A. Fuchs
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
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Lasseter HC, Ramirez DR, Xie X, Fuchs RA. Involvement of the lateral orbitofrontal cortex in drug context-induced reinstatement of cocaine-seeking behavior in rats. Eur J Neurosci 2009; 30:1370-81. [PMID: 19769591 PMCID: PMC2758926 DOI: 10.1111/j.1460-9568.2009.06906.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Orbitofrontal cortex (OFC) damage produces impaired decision-making, impulsivity and perseveration and potentially contributes to compulsive drug seeking in cocaine users. To further explore this phenomenon, we assessed the role of the lateral OFC (lOFC) in drug context-induced cocaine-seeking behavior in the reinstatement model of drug relapse. Rats were trained to lever press for intravenous cocaine infusions in a distinct environmental context (cocaine-paired context) followed by extinction training in a different context (extinction-paired context). Reinstatement of cocaine seeking (non-reinforced lever presses) was assessed in the cocaine context in the absence of response-contingent stimuli. In Experiment 1, we evaluated whether acute inhibition of lOFC output alters context-induced cocaine-seeking behavior by infusing the GABA(B + A) agonists (baclofen + muscimol) or vehicle into the lOFC immediately before exposure to the cocaine-paired context. In Experiments 2 and 3, we assessed how prolonged loss of lOFC output affects drug context-induced cocaine seeking by administering bilateral N-methyl-d-aspartic acid or sham lesions of the lOFC either before or after self-administration and extinction training. Remarkably, IOFC functional inactivation attenuated, post-training lesions failed to alter and pre-training lesions potentiated drug context-induced cocaine seeking without altering responding in the extinction context. These results suggest that neural activity in the lOFC promotes context-induced cocaine-seeking behavior. However, prolonged loss of lOFC output enhances the motivational salience of cocaine-paired contextual stimuli probably by eliciting compensatory neuroadaptations, with the effects of post-training lOFC lesions reflecting an intermediate state of compensatory neuroplasticity. Overall, these findings support the idea that OFC dysfunction may promote cue reactivity and enhance relapse propensity in cocaine users.
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Affiliation(s)
| | - Donna R. Ramirez
- Department of Psychology, University of North Carolina, Chapel Hill, NC, US
| | - Xiaohu Xie
- Department of Psychology, University of North Carolina, Chapel Hill, NC, US
| | - Rita A. Fuchs
- Department of Psychology, University of North Carolina, Chapel Hill, NC, US
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Ramirez DR, Bell GH, Lasseter HC, Xie X, Traina SA, Fuchs RA. Dorsal hippocampal regulation of memory reconsolidation processes that facilitate drug context-induced cocaine-seeking behavior in rats. Eur J Neurosci 2009; 30:901-12. [PMID: 19712098 DOI: 10.1111/j.1460-9568.2009.06889.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Exposure to a cocaine-paired context increases the propensity for relapse in cocaine users and prompts cocaine-seeking behavior in rats. According to the reconsolidation hypothesis, upon context re-exposure, established cocaine-related associations are retrieved and can become labile. These associations must undergo reconsolidation into long-term memory to effect enduring stimulus control. The dorsal hippocampus (DH), dorsolateral caudate-putamen and dorsomedial prefrontal cortex are critical for the expression of context-induced cocaine seeking, and these brain regions may also play a role in the reconsolidation of cocaine-related memories that promote this behavior. To test this hypothesis, rats were trained to press a lever for unsignaled cocaine infusions (0.2 mg/infusion, i.v.) in a distinct environmental context (cocaine-paired context), followed by extinction training in a different context (extinction context). Rats were then re-exposed to the cocaine-paired context for 15 min in order to reactivate cocaine-related memories or received comparable exposure to a novel unpaired context. Immediately thereafter, rats received bilateral microinfusions of the protein synthesis inhibitor anisomycin, the sodium channel blocker tetrodotoxin or vehicle into one of the above brain regions. After additional extinction training in the extinction context, reinstatement of cocaine-seeking behavior (i.e., non-reinforced lever presses) was assessed in the cocaine-paired context. Tetrodotoxin, but not anisomycin, administered into the DH inhibited drug context-induced cocaine-seeking behavior in a memory reactivation-dependent manner. Other manipulations failed to alter this behavior. These findings suggest that the DH facilitates the reconsolidation of associative memories that maintain context-induced cocaine-seeking behavior, but it is not the site of anisomycin-sensitive memory restabilization per se.
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Affiliation(s)
- Donna R Ramirez
- Department of Psychology, University of North Carolina, Chapel Hill, NC, USA
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Abstract
Successful treatment of drug addiction must involve relapse prevention informed by our understanding of the neurobiological bases of drug relapse. In humans, exposure to drug-associated environmental stimuli can elicit drug craving and relapse. Because exposure to drug-paired stimuli similarly induces drug-seeking behavior in laboratory animals, several animal models of drug relapse have been developed. Here, we review animal models of cue-induced drug relapse and critically evaluate their validity and utility in addressing human relapse behaviors.
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Affiliation(s)
- R A Fuchs
- Department of Psychology, University of North Carolina, NC 27599-3270
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