1
|
High Morphine Use Disorder Susceptibility Is Predicted by Impaired Learning Ability in Mice. Brain Sci 2022; 12:brainsci12121650. [PMID: 36552110 PMCID: PMC9776386 DOI: 10.3390/brainsci12121650] [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: 09/24/2022] [Revised: 10/24/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
An obvious reason for substance uses disorders (SUDs) is drug craving and seeking behavior induced by conditioned context, which is an abnormal solid context memory. The relationship between susceptibility to SUD and learning ability remains unclear in humans and animal models. In this study, we found that susceptibility to morphine use disorder (MUD) was negatively correlated with learning ability in conditioned place preference (CPP) in C57 mice. By using behavioral tests, we identified the FVB mouse as learning impaired. In addition, we discovered that learning-relevant proteins, such as the glutamate receptor subunits GluA1, NR1, and NR2A, were decreased in FVB mice. Finally, we assessed the context learning ability of FVB mice using the CPP test and priming. We found that FVB mice had lower learning performance with respect to normal memory but higher performance of morphine-reinstatement memory. Compared to C57 mice, FVB mice are highly sensitive to MUDs. Our results suggest that SUD susceptibility is predicted by impaired learning ability in mice; therefore, learning ability can play a simple and practical role in identifying high-risk SUD groups.
Collapse
|
2
|
Wang S, Li M, Su L, Wang Y, Ma D, Wang H, Zhu J, Chen T. Knockout of Dopamine D3 Receptor Gene Blocked Methamphetamine-Induced Distinct Changes of Dopaminergic and Glutamatergic Synapse in the Nucleus Accumbens Shell of Mice. Front Cell Neurosci 2022; 16:893190. [PMID: 35711471 PMCID: PMC9195588 DOI: 10.3389/fncel.2022.893190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/03/2022] [Indexed: 12/15/2022] Open
Abstract
Structural plasticity changes in the brain are thought to underlie, at least partially, drug-induced persistent changes in behavior. Our previous study reported that increased synaptic density in the nucleus accumbens shell (NAcsh) correlates with and may contribute to behavioral sensitization induced by methamphetamine (METH). However, the distinct changes of dopaminergic and glutamatergic synapses and the modulating effects of dopamine D3 receptor remain unclear. In the current study, we used immunohistochemistry electron-microscopy and immunofluorescence to detect the changes of dopamine D1, D2, and glutamate NR2B-positive synapses and cells in the NAcsh of METH-sensitized wild type (WT) and knockout of dopamine D3 receptor gene (D3–/–) mice. We found that METH induced long-term behavioral sensitization in WT mice, which was accompanied by an increased number and rate of dopamine D1 receptor-positive synapses and cells, as well as glutamate NR2B-positive synapses and cells. In contrast, the number and rate of dopamine D2 receptor-positive synapses and cells were significantly decreased in the NAcsh of METH-sensitized WT mice. D3–/– mice exhibited attenuated acute locomotor responses and behavioral sensitization to METH compared with WT mice. Moreover, the knockout of dopamine D3 receptor gene inhibited METH-induced changes of dopaminergic and glutamatergic synapses in the NAcsh of METH-sensitized mice. Taken together, our results suggest that METH induced distinct changes of dopaminergic and glutamatergic synapses and cells in the NAcsh of mice, which was blocked by the knockout of dopamine D3 receptor gene, and may contribute to, at least partially, METH-induced behavior sensitization as well as the modulating effect of the dopamine D3 receptor.
Collapse
Affiliation(s)
- Shuai Wang
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an, China
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an, China
| | - Ming Li
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an, China
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an, China
| | - Linlan Su
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an, China
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an, China
| | - Yu Wang
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an, China
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an, China
| | - Dongliang Ma
- Programme in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Hongyan Wang
- Programme in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jie Zhu
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an, China
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Jie Zhu,
| | - Teng Chen
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an, China
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an, China
- Teng Chen,
| |
Collapse
|
3
|
Sabran-Cohen T, Bright U, Mizrachi Zer-Aviv T, Akirav I. Rapamycin prevents the long-term impairing effects of adolescence Δ-9-tetrahydrocannabinol on memory and plasticity in male rats. Eur J Neurosci 2021; 54:6104-6122. [PMID: 34405459 DOI: 10.1111/ejn.15425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 07/01/2021] [Accepted: 08/09/2021] [Indexed: 11/27/2022]
Abstract
Long-lasting cognitive impairment is one of the most central negative consequences related to the exposure to cannabis during adolescence and particularly of Δ-9-tetrahydrocannabinol (THC). The aim of this study was to compare the protracted effects of adolescent versus late-adolescent chronic exposure to THC on short-term memory and plasticity and to examine whether rapamycin, a blocker of the mammalian target of rapamycin (mTOR) pathway, can restore THC-induced deficits in memory and plasticity. Male rats were injected with ascending doses of THC [2.5, 5, 10 mg/kg; intraperitoneally (i.p.)] during adolescence and late-adolescence (post-natal days 30-41 and 45-56, respectively), followed by daily injections of rapamycin (1 mg/kg, i.p.) during the first 10 days of cessation from THC. Thirty days after the last injection, rats were tested for short-term and working memory, anxiety-like behaviour, and plasticity in the pathways projecting from the ventral subiculum (vSub) of the hippocampus to the prefrontal cortex (PFC) and nucleus accumbens (NAc). THC exposure in adolescence, but not late-adolescence, was found to induce long-term deficits in object recognition short-term memory and synaptic plasticity in the hippocampal-accumbens pathway. Importantly, rapamycin rescued these persistent effects of THC administered during adolescence. Our findings show that some forms of memory and plasticity are sensitive to chronic THC administration during adolescence and that rapamycin administered during THC cessation may restore cognitive function and plasticity, thus potentially protecting against the possible long-term harmful effects of THC.
Collapse
Affiliation(s)
- Talia Sabran-Cohen
- Department of Psychology, School of Psychological Sciences, University of Haifa, Haifa, Israel.,The Integrated Brain and Behavior Research Center, University of Haifa, Haifa, Israel
| | - Uri Bright
- Department of Psychology, School of Psychological Sciences, University of Haifa, Haifa, Israel.,The Integrated Brain and Behavior Research Center, University of Haifa, Haifa, Israel
| | - Tomer Mizrachi Zer-Aviv
- Department of Psychology, School of Psychological Sciences, University of Haifa, Haifa, Israel.,The Integrated Brain and Behavior Research Center, University of Haifa, Haifa, Israel
| | - Irit Akirav
- Department of Psychology, School of Psychological Sciences, University of Haifa, Haifa, Israel.,The Integrated Brain and Behavior Research Center, University of Haifa, Haifa, Israel
| |
Collapse
|
4
|
Knouse MC, Briand LA. Behavioral sex differences in cocaine and opioid use disorders: The role of gonadal hormones. Neurosci Biobehav Rev 2021; 128:358-366. [PMID: 34214512 DOI: 10.1016/j.neubiorev.2021.06.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/20/2021] [Accepted: 06/27/2021] [Indexed: 11/20/2022]
Abstract
Females are more vulnerable than males to many aspects of cocaine use disorder. This vulnerability also translates to opioid use disorder, with females exhibiting stronger behavioral responses than males to drugs such as heroin and morphine. While there is evidence for many overlapping neural mechanisms underlying cocaine and opioid abuse, there is also a breadth of evidence indicating divergent effects of the drugs on synaptic plasticity. This makes it unclear whether the behavioral sex differences seen in substance use disorder across different drugs of abuse rely on the same mechanisms. Ovarian hormones have consistently been implicated as drivers of the behavioral sex differences in cocaine taking and seeking. While there are far fewer studies on the role of ovarian hormones in opioid use disorder, the existing data suggest that ovarian hormones may not drive these behavioral effects in the same manner as in cocaine use disorder. This review highlights evidence that behavioral sex differences in substance use disorder might be driven by different mechanisms depending on drug class.
Collapse
Affiliation(s)
| | - Lisa A Briand
- Department of Psychology, Temple University, United States; Neuroscience Program, Temple University, United States.
| |
Collapse
|
5
|
Thompson BL, Oscar-Berman M, Kaplan GB. Opioid-induced structural and functional plasticity of medium-spiny neurons in the nucleus accumbens. Neurosci Biobehav Rev 2021; 120:417-430. [PMID: 33152423 PMCID: PMC7855607 DOI: 10.1016/j.neubiorev.2020.10.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 12/21/2022]
Abstract
Opioid Use Disorder (OUD) is a chronic relapsing clinical condition with tremendous morbidity and mortality that frequently persists, despite treatment, due to an individual's underlying psychological, neurobiological, and genetic vulnerabilities. Evidence suggests that these vulnerabilities may have neurochemical, cellular, and molecular bases. Key neuroplastic events within the mesocorticolimbic system that emerge through chronic exposure to opioids may have a determinative influence on behavioral symptoms associated with OUD. In particular, structural and functional alterations in the dendritic spines of medium spiny neurons (MSNs) within the nucleus accumbens (NAc) and its dopaminergic projections from the ventral tegmental area (VTA) are believed to facilitate these behavioral sequelae. Additionally, glutamatergic neurons from the prefrontal cortex, the basolateral amygdala, the hippocampus, and the thalamus project to these same MSNs, providing an enriched target for synaptic plasticity. Here, we review literature related to neuroadaptations in NAc MSNs from dopaminergic and glutamatergic pathways in OUD. We also describe new findings related to transcriptional, epigenetic, and molecular mechanisms in MSN plasticity in the different stages of OUD.
Collapse
Affiliation(s)
- Benjamin L Thompson
- Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, CT, 06520, USA; Research Service, VA Boston Healthcare System, 150 South Huntington Avenue, Boston, MA 02130, USA.
| | - Marlene Oscar-Berman
- Research Service, VA Boston Healthcare System, 150 South Huntington Avenue, Boston, MA 02130, USA; Department of Anatomy & Neurobiology, Boston University School of Medicine, 72 East Concord Street, Boston, MA, 02118, USA; Department of Psychiatry, Boston University School of Medicine, 720 Harrison Avenue, Boston, MA, 02118, USA; Department of Neurology, Boston University School of Medicine, Boston University Medical Center, 80 East Concord Street, Boston, MA 02118, USA.
| | - Gary B Kaplan
- Department of Psychiatry, Boston University School of Medicine, 720 Harrison Avenue, Boston, MA, 02118, USA; Mental Health Service, VA Boston Healthcare System, 940 Belmont Street, Brockton, MA, 02301, USA; Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, 72 East Concord Street, Boston, MA, 02118, USA.
| |
Collapse
|
6
|
Formation of a morphine-conditioned place preference does not change the size of evoked potentials in the ventral hippocampus-nucleus accumbens projection. Sci Rep 2019; 9:5206. [PMID: 30914714 PMCID: PMC6435809 DOI: 10.1038/s41598-019-41568-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 02/27/2019] [Indexed: 12/26/2022] Open
Abstract
In opioid addiction, cues and contexts associated with drug reward can be powerful triggers for drug craving and relapse. The synapses linking ventral hippocampal outputs to medium spiny neurons of the accumbens may be key sites for the formation and storage of associations between place or context and reward, both drug-related and natural. To assess this, we implanted rats with electrodes in the accumbens shell to record synaptic potentials evoked by electrical stimulation of the ventral hippocampus, as well as continuous local-field-potential activity. Rats then underwent morphine-induced (10 mg/kg) conditioned-place-preference training, followed by extinction. Morphine caused an acute increase in the slope and amplitude of accumbens evoked responses, but no long-term changes were evident after conditioning or extinction of the place preference, suggesting that the formation of this type of memory does not lead to a net change in synaptic strength in the ventral hippocampal output to the accumbens. However, analysis of the local field potential revealed a marked sensitization of theta- and high-gamma-frequency activity with repeated morphine administration. This phenomenon may be linked to the behavioral changes—such as psychomotor sensitization and the development of drug craving—that are associated with chronic use of addictive drugs.
Collapse
|
7
|
Qian Z, Wu X, Qiao Y, Shi M, Liu Z, Ren W, Han J, Zheng Q. Downregulation of mGluR2/3 receptors during morphine withdrawal in rats impairs mGluR2/3- and NMDA receptor-dependent long-term depression in the nucleus accumbens. Neurosci Lett 2018; 690:76-82. [PMID: 30315852 DOI: 10.1016/j.neulet.2018.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 09/29/2018] [Accepted: 10/09/2018] [Indexed: 10/28/2022]
Abstract
Drugs of abuse modify synaptic long-term potentiation and long-term depression (LTD) in the nucleus accumbens, and the impairment of synaptic plasticity in this brain region may be a universal feature of drug addiction. It is unknown whether metabotropic glutamate receptors (mGluRs) play a role in synaptic plasticity induced by drugs such as morphine. The neurochemical, electrophysiological, and Western blotting experiments reported here reveal a novel form of LTD in synapses of the shell region of the nucleus accumbens induced in vivo by low-frequency stimulation of the medial prefrontal cortex. This plasticity required the activation of N-methyl-d-aspartate receptors and mGluR2/3 but not mGluR5. The expression of mGluR2/3 was downregulated during withdrawal from repeated morphine exposure (10 days after the last injection), resulting in impaired low-frequency stimulation-induced LTD. These results indicate that withdrawal-induced mGluR2/3 downregulation alters neural plasticity after morphine exposure, which may be a mechanism contributing to drug addiction.
Collapse
Affiliation(s)
- Zhaoqiang Qian
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China; College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Xiaojie Wu
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Yanning Qiao
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Meimei Shi
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Zhiqiang Liu
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Wei Ren
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Jing Han
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China
| | - Qiaohua Zheng
- Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, Shaanxi, 710062, PR China.
| |
Collapse
|
8
|
Mahmud A, Gallant S, Sedki F, D'Cunha T, Shalev U. Effects of an acute cannabidiol treatment on cocaine self-administration and cue-induced cocaine seeking in male rats. J Psychopharmacol 2017; 31:96-104. [PMID: 27624146 DOI: 10.1177/0269881116667706] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cannabidiol is a non-psychoactive compound that is the second most abundant component of cannabis. It has been shown to have a potential therapeutic value for a wide range of disorders, including anxiety, psychosis, and depression. Recently, it was suggested that cannabidiol might be a potential treatment for heroin craving and relapse. Here we investigated the effects of an acute treatment with cannabidiol on cocaine self-administration and cue-induced cocaine seeking in rats. Rats were trained to press a lever to self-administer cocaine (0.5 mg/kg/infusion), first under a fixed interval 20 s (FI-20 s) and then under a progressive ratio (PR) schedule of reinforcement. Cocaine self-administration under a PR schedule of reinforcement was not attenuated by cannabidiol injections (5.0 mg/kg and 10.0 mg/kg; i.p.) when tested 30 min and 24 h after treatment. Cannabidiol treatment (5.0 mg/kg or 10.0 mg/kg) also did not attenuate cue-induced cocaine seeking in rats after a withdrawal period of 14 days. In contrast, treatment with cannabidiol (10.0 mg/kg; i.p.) resulted in a statistically significant anxiolytic effect in the elevated plus-maze. Our findings suggest that, under the conditions described here, an acute cannabidiol treatment has a minimal effect on a rat model of cocaine intake and relapse.
Collapse
Affiliation(s)
- Ashraf Mahmud
- Department of Psychology, CSBN/GRNC, Concordia University, Montreal, Canada
| | - Stephanie Gallant
- Department of Psychology, CSBN/GRNC, Concordia University, Montreal, Canada
| | - Firas Sedki
- Department of Psychology, CSBN/GRNC, Concordia University, Montreal, Canada
| | - Tracey D'Cunha
- Department of Psychology, CSBN/GRNC, Concordia University, Montreal, Canada
| | - Uri Shalev
- Department of Psychology, CSBN/GRNC, Concordia University, Montreal, Canada
| |
Collapse
|
9
|
Zhang Y, Windisch K, Altschuler J, Rahm S, Butelman ER, Kreek MJ. Adolescent oxycodone self administration alters subsequent oxycodone-induced conditioned place preference and anti-nociceptive effect in C57BL/6J mice in adulthood. Neuropharmacology 2016; 111:314-322. [PMID: 27614221 DOI: 10.1016/j.neuropharm.2016.09.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 08/11/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
Abstract
Adolescent and young adult abuse of short-acting MOP-r agonists such as oxycodone is a pressing public health issue. Few preclinical studies have examined how adolescent exposure to oxycodone impacts its effects in the transition to adulthood. OBJECTIVE To determine in mice how chronic adolescent oxycodone self-administration (SA) affects subsequent oxycodone-induced conditioned place preference (CPP), locomotor activity, and anti-nociception once mice reach early adulthood. METHODS Adolescent C57BL/6J male mice (4 weeks old, n = 6-11) and adult mice (10 weeks old, n = 6-10) were surgically implanted with indwelling jugular catheters. Mice then acquired oxycodone self-administration (14 consecutive 2-hr daily sessions; 0.25 mg/kg/infusion) followed by a 14-day drug-free (withdrawal) period in home cage. After the 14-day drug-free period, mice underwent a 10-day oxycodone CPP procedure (0, 1, 3, 10 mg/kg i.p.) or were tested for acute oxycodone-induced antinociception in the hot plate assay (3.35, 5, 7.5 mg/kg i.p.). RESULTS Mice that self-administered oxycodone during adolescence exhibited greater oxycodone-induced CPP (at the 3 mg/kg dose) than their yoked saline controls and mice that self-administered oxycodone during adulthood. Oxycodone dose-dependently increased locomotor activity, but sensitization developed only to the 3 mg/kg in the mice that underwent oxycodone self-administration as adolescents. Mice that self-administered oxycodone as adolescents decreased in the anti-nociceptive effects of oxycodone in one dose (5 mg/kg), whereas animals that self-administered oxycodone as adults did not show this effect. CONCLUSION Chronic adolescent oxycodone self-administration led to increased oxycodone-induced CPP (primarily 1 and 3 mg/kg, i.p.) and reduced antinociceptive effect of oxycodone (5 mg/kg, i.p.) in adulthood.
Collapse
Affiliation(s)
- Yong Zhang
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA.
| | - Kyle Windisch
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Joshua Altschuler
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Sage Rahm
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Eduardo R Butelman
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Mary Jeanne Kreek
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA
| |
Collapse
|
10
|
Tian H, Xu Y, Liu F, Wang G, Hu S. Effect of acute fentanyl treatment on synaptic plasticity in the hippocampal CA1 region in rats. Front Pharmacol 2015; 6:251. [PMID: 26578961 PMCID: PMC4626754 DOI: 10.3389/fphar.2015.00251] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 10/14/2015] [Indexed: 12/22/2022] Open
Abstract
Postoperative cognitive dysfunction (POCD), mainly characterized by short-term decline of learning and memory, occurs after operations under anesthesia. However, the underlying mechanisms are poorly understood. The μ-opioid receptors (MOR) are highly expressed in interneurons of hippocampus, and is believed to be critical for the dysfunction of synaptic plasticity between hippocampal neurons. Therefore, we investigated the effect of fentanyl, a strong agonist of MOR and often used for anesthesia and analgesia in clinical settings, on hippocampal synaptic plasticity in the Schaffer-collateral CA1 pathway during acute exposure and washout in vitro. Our results revealed that acute fentanyl exposure (0.01, 0.1, 1 μM) dose-dependently increased the field excitatory postsynaptic potentials (fEPSPs), which was prevented by pre-administration of picrotoxin (50 μM) or MOR antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Phe-Thr-NH2 (CTOP, 10 μM). While fentanyl exposure-increased fEPSPs amplitude was prevented by picrotoxin [an inhibitor of γ-aminobutyric acid receptor (GABAR)] treatment or fentanyl washout, pretreatment of picrotoxin failed to prevent the fentanyl-impaired long-term potentiation (LTP) of synaptic strength as well as the fentanyl-enhanced long-term depression (LTD). These results demonstrated that fentanyl acute exposure and washout increases hippocampal excitability in the Schaffer-collateral CA1 pathway, depending on disinhibiting interneurons after MOR activation. In addition, fentanyl acute exposure and washout modulated synaptic plasticity, but the inhibitory activation was not critical. Elucidating the detailed mechanisms for synaptic dysfunction after fentanyl exposure and washout may provide insights into POCD generation after fentanyl anesthesia.
Collapse
Affiliation(s)
- Hai Tian
- Clinic of Anesthesiology, No. 324 Hospital of the People's Liberation Army Chongqing, China
| | - Yueming Xu
- Clinic of Anesthesiology, No. 324 Hospital of the People's Liberation Army Chongqing, China
| | - Fucun Liu
- Clinic of Pharmacology, No. 324 Hospital of the People's Liberation Army Chongqing, China
| | - Guowei Wang
- Department of Medical Affairs, No. 324 Hospital of the People's Liberation Army Chongqing, China
| | - Sanjue Hu
- Institute of Neurosciences, The Fourth Military Medical University Xi'an, China
| |
Collapse
|
11
|
Han H, Dong Z, Jia Y, Mao R, Zhou Q, Yang Y, Wang L, Xu L, Cao J. Opioid addiction and withdrawal differentially drive long-term depression of inhibitory synaptic transmission in the hippocampus. Sci Rep 2015; 5:9666. [PMID: 25942289 PMCID: PMC5386187 DOI: 10.1038/srep09666] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 03/13/2015] [Indexed: 01/01/2023] Open
Abstract
Addictive behavior is increasingly accepted as a drug-associated pathological memory in which the hippocampus is profoundly engaged. It has been well documented that adaptations of synaptic plasticity of excitatory transmission in the hippocampus may contribute to opioid addiction. However, it remains unknown whether and how adaptive changes of synaptic plasticity of inhibitory transmission in the hippocampus occurs during opioid abuse. Here, we reported that a single in vivo morphine exposure (SM) did not affect inhibitory long-term depression (I-LTD) in the hippocampus, compared with saline control; while repeated morphine exposure (RM) abolished this I-LTD. Interestingly, opioid withdrawal for 3-5 days after repeated (RMW), but not a single morphine exposure (SMW), largely enhanced I-LTD. More importantly, the I-LTD in single morphine treatment is dependent on presynaptic mechanism since it can be blocked by AM251, a selective cannabinoid receptor 1 antagonist. While the large I-LTD in RMW group is dependent on combinatorial presynaptic and postsynaptic mechanisms since it can be blocked by co-application of AM251 and L-type calcium channel blocker LaCl3. Thus, these results demonstrate that opioid use and withdrawal drive the dynamics of presynaptic and postsynaptic I-LTD expression in the hippocampus that may contribute to the persistent behavioral changes during opioid abuse.
Collapse
Affiliation(s)
- Huili Han
- 1] Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China [2] Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China [3] Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Zhifang Dong
- Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Yunfang Jia
- 1] Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China [2] Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongrong Mao
- Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Qixin Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Yuexiong Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Liping Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Lin Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Jun Cao
- Key Laboratory of Animal Models and Human Disease Mechanisms, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease, and Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| |
Collapse
|
12
|
Horovitz O, Richter-Levin G. Dorsal periaqueductal gray simultaneously modulates ventral subiculum induced-plasticity in the basolateral amygdala and the nucleus accumbens. Front Behav Neurosci 2015; 9:53. [PMID: 25788880 PMCID: PMC4349162 DOI: 10.3389/fnbeh.2015.00053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 02/12/2015] [Indexed: 11/25/2022] Open
Abstract
The ventral subiculum of the hippocampus projects both to the basolateral amygdala (BLA), which is typically, associated with a response to aversive stimuli, as well as to the nucleus accumbens (NAcc), which is typically associated with a response to appetitive stimuli. Traditionally, studies of the responses to emotional events focus on either negative or positive affect-related processes, however, emotional experiences often affect both. The ability of high-level processing brain regions (e.g., medial prefrontal cortex) to modulate the balance between negative and positive affect-related regions was examined extensively. In contrast, the ability of low-level processing areas (e.g., periaqueductal gray—PAG) to do so, has not been sufficiently studied. To address whether midbrain structures have the ability to modulate limbic regions, we first examined the ventral subiculum stimulation’s (vSub) ability to induce plasticity in the BLA and NAcc simultaneously in rats. Further, dorsal PAG (dPAG) priming ability to differentially modulate vSub stimulation induced plasticity in the BLA and the NAcc was subsequently examined. vSub stimulation resulted in plasticity in both the BLA and the NAcc simultaneously. Moreover, depending on stimulus intensity, differential dPAG priming effects on LTP in these two regions were observed. The results demonstrate that negative and positive affect-related processes may be simultaneously modulated. Furthermore, under some conditions lower-level processing areas, such as the dPAG, may differentially modulate plasticity in these regions and thus affect the long-term emotional outcome of the experience.
Collapse
Affiliation(s)
- Omer Horovitz
- The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa Haifa, Israel
| | - Gal Richter-Levin
- The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa Haifa, Israel ; Department of Psychology, University of Haifa Haifa, Israel ; Sagol Department of Neurobiology, University of Haifa Haifa, Israel
| |
Collapse
|
13
|
Yuan Q, Rubic M, Seah J, Rae C, Wright IMR, Kaltenbach K, Feller JM, Abdel-Latif ME, Chu C, Oei JL. Do maternal opioids reduce neonatal regional brain volumes? A pilot study. J Perinatol 2014; 34:909-13. [PMID: 24945162 DOI: 10.1038/jp.2014.111] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/18/2014] [Accepted: 04/21/2014] [Indexed: 01/17/2023]
Abstract
OBJECTIVE A substantial number of children exposed to gestational opioids have neurodevelopmental, behavioral and cognitive problems. Opioids are not neuroteratogens but whether they affect the developing brain in more subtle ways (for example, volume loss) is unclear. We aimed to determine the feasibility of using magnetic resonance imaging (MRI) to assess volumetric changes in healthy opioid-exposed infants. STUDY DESIGN Observational pilot cohort study conducted in two maternity hospitals in New South Wales, Australia. Maternal history and neonatal urine and meconium screens were obtained to confirm drug exposure. Volumetric analysis of MRI scans was performed with the ITK-snap program. RESULT Scans for 16 infants (mean (s.d.) gestational age: 40.9 (1.5) weeks, birth weight: 3022.5 (476.6) g, head circumference (HC): 33.7 (1.5 cm)) were analyzed. Six (37.5%) infants had HC <25th percentile. Fourteen mothers used methadone, four used buprenorphine and 11 used more than one opioid (including heroin, seven). All scans were structurally normal whole brain volumes (357.4 (63.8)) and basal ganglia (14.5 (3.5)) ml were significantly smaller than population means (425.4 (4.8), 17.1 (4.4) ml, respectively) but lateral ventricular volumes (3.5 (1.8) ml) were larger than population values (2.1(1.5)) ml. CONCLUSION Our pilot study suggests that brain volumes of opioid-exposed babies may be smaller than population means and that specific regions, for example, basal ganglia, that are involved in neurotransmission, may be particularly affected. Larger studies including correlation with neurodevelopmental outcomes are warranted to substantiate this finding.
Collapse
Affiliation(s)
- Q Yuan
- School of Women's and Children's Health, University of New South Wales, Randwick, NSW, Australia
| | - M Rubic
- School of Women's and Children's Health, University of New South Wales, Randwick, NSW, Australia
| | - J Seah
- School of Women's and Children's Health, University of New South Wales, Randwick, NSW, Australia
| | - C Rae
- Neuroscience Research Australia, University of New South Wales, Randwick, NSW, Australia
| | - I M R Wright
- Graduate School of Medicine and Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - K Kaltenbach
- Department of Pediatrics, Thomas Jefferson University, Philadelphia, PA, USA
| | - J M Feller
- 1] School of Women's and Children's Health, University of New South Wales, Randwick, NSW, Australia [2] Department of Paediatrics, Sydney Children's Hospital, Randwick, NSW, Australia
| | - M E Abdel-Latif
- 1] Department of Neonatology, Centenary Hospital for Women and Children, Canberra, ACT, Australia [2] School of Clinical Medicine, Australian National University, Woden, ACT, Australia
| | - C Chu
- Department of Radiology, The Wollongong Hospital, Wollongong, NSW, Australia
| | - J L Oei
- 1] School of Women's and Children's Health, University of New South Wales, Randwick, NSW, Australia [2] Department of Newborn Care, Royal Hospital for Women, Randwick, NSW, Australia
| | | |
Collapse
|
14
|
Deschaux O, Vendruscolo L, Schlosburg J, Diaz-Aguilar L, Yuan CJ, Sobieraj JC, George O, Koob GF, Mandyam CD. Hippocampal neurogenesis protects against cocaine-primed relapse. Addict Biol 2014; 19:562-74. [PMID: 23278919 PMCID: PMC3620729 DOI: 10.1111/adb.12019] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Accumulating evidence demonstrates a functional role for the hippocampus in mediating relapse to cocaine-seeking behavior and extinction-induced inhibition of cocaine seeking, and dentate gyrus neurogenesis in the hippocampus may have a role. Here, we tested the hypothesis that disruption of normal hippocampal activity during extinction alters relapse to cocaine-seeking behavior as a function of dentate gyrus neurogenesis. Adult rats were trained to self-administer cocaine on a fixed-ratio schedule, followed by extinction and cocaine-primed reinstatement testing. Some rats received low-frequency stimulation (LFS; 2 Hz for 25 minutes) after each extinction session in the dorsal or ventral hippocampal formation. All rats received an injection of the mitotic marker 5-bromo-2'-deoxyuridine (BrdU) to label developing dentate gyrus neurons during self-administration, as well as before or after extinction and LFS. We found that LFS during extinction did not alter extinction behavior but enhanced cocaine-primed reinstatement. Cocaine self-administration reduced levels of 24-day-old BrdU cells and dentate gyrus neurogenesis, which was normalized by extinction. LFS during extinction prevented extinction-induced normalization of dentate gyrus neurogenesis and potentiated cocaine-induced reinstatement of drug seeking. LFS inhibition of extinction-induced neurogenesis was not due to enhanced cell death, revealed by quantification of activated caspase3-labeled cells. These data suggest that LFS during extinction disrupts hippocampal networking by disrupting neurogenesis and also strengthens relapse-like behaviors. Thus, newly born dentate gyrus neurons during withdrawal and extinction learning facilitate hippocampal networking that mediates extinction-induced inhibition of cocaine seeking and may play a key role in preventing relapse.
Collapse
Affiliation(s)
- Olivier Deschaux
- Laboratoire de Neurobiologie et Psychotraumatologie, Université de Nice Sophia Antipolis, France
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
| | - Leandro Vendruscolo
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
| | - Joel Schlosburg
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
| | - Luis Diaz-Aguilar
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
| | - Clara J. Yuan
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Jeffery C. Sobieraj
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
| | - Olivier George
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
| | - George F. Koob
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Chitra D. Mandyam
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| |
Collapse
|
15
|
Cannabinoid receptor activation prevents the effects of chronic mild stress on emotional learning and LTP in a rat model of depression. Neuropsychopharmacology 2014; 39:919-33. [PMID: 24141570 PMCID: PMC3924526 DOI: 10.1038/npp.2013.292] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 10/08/2013] [Accepted: 10/16/2013] [Indexed: 12/17/2022]
Abstract
Most psychiatric disorders are characterized by emotional memory or learning disturbances. Chronic mild stress (CMS) is a common animal model for stress-induced depression. Here we examined whether 3 days of treatment using the CB1/2 receptor agonist WIN55,212-2 could ameliorate the effects of CMS on emotional learning (ie, conditioned avoidance and extinction), long-term potentiation (LTP) in the hippocampal-accumbens pathway, and depression-like symptoms (ie, coping with stress behavior, anhedonia, and weight changes). We also examined whether the ameliorating effects of WIN55,212-2 on behavior and physiology after CMS are mediated by CB1 and glucocorticoid receptors (GRs). Rats were exposed to CMS or handled on days 1-21. The agonist WIN55,212-2 or vehicle were administered on days 19-21 (IP; 0.5 mg/kg) and behavioral and electrophysiological measures were taken on days 23 and 28. The CB1 receptor antagonist AM251 (IP; 0.3 mg/kg) or the GR antagonist RU-38486 (IP; 10 mg/kg) were co-administered with WIN55,212-2. Our results show that CMS significantly modified physiological and behavioral reactions, as observed by the impairment in avoidance extinction and LTP in the hippocampal-accumbens pathway, and the alterations in depression-like symptoms, such as coping with stress behavior, weight gain, and sucrose consumption. The most significant effect observed in this study was that 3 days of WIN55,212-2 administration prevented the CMS-induced alterations in emotional memory (ie, extinction) and plasticity. This effect was mediated by CB1 receptors as the CB1 receptor antagonist AM251 prevented the ameliorating effects of WIN55,212-2 on extinction and LTP. The GR antagonist RU-38486 also prevented the CMS-induced alterations in extinction and plasticity, and when co-administered with WIN55,212-2, the preventive effects after CMS were maintained. The findings suggest that enhancing cannabinoid signaling could represent a novel approach to the treatment of cognitive deficits that accompany stress-related depression.
Collapse
|
16
|
Cannabinoids ameliorate impairments induced by chronic stress to synaptic plasticity and short-term memory. Neuropsychopharmacology 2013; 38:1521-34. [PMID: 23426383 PMCID: PMC3682147 DOI: 10.1038/npp.2013.51] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Repeated stress is one of the environmental factors that precipitates and exacerbates mental illnesses like depression and anxiety as well as cognitive impairments. We have previously shown that cannabinoids can prevent the effects of acute stress on learning and memory. Here we aimed to find whether chronic cannabinoid treatment would alleviate the long-term effects of exposure to chronic restraint stress on memory and plasticity as well as on behavioral and neuroendocrine measures of anxiety and depression. Late adolescent rats were exposed to chronic restraint stress for 2 weeks followed each day by systemic treatment with vehicle or with the CB1/2 receptor agonist WIN55,212-2 (1.2 mg/kg). Thirty days after the last exposure to stress, rats demonstrated impaired long-term potentiation (LTP) in the ventral subiculum-nucleus accumbens (NAc) pathway, impaired performance in the prefrontal cortex (PFC)-dependent object-recognition task and the hippocampal-dependent spatial version of this task, increased anxiety levels, and significantly reduced expression of glucocorticoid receptors (GRs) in the amygdala, hippocampus, PFC, and NAc. Chronic WIN55,212-2 administration prevented the stress-induced impairment in LTP levels and in the spatial task, with no effect on stress-induced alterations in unconditioned anxiety levels or GR levels. The CB1 antagonist AM251 (0.3 mg/kg) prevented the ameliorating effects of WIN55,212-2 on LTP and short-term memory. Hence, the beneficial effects of WIN55,212-2 on memory and plasticity are mediated by CB1 receptors and are not mediated by alterations in GR levels in the brain areas tested. Our findings suggest that cannabinoid receptor activation could represent a novel approach to the treatment of cognitive deficits that accompany a variety of stress-related neuropsychiatric disorders.
Collapse
|
17
|
Abush H, Akirav I. Short- and long-term cognitive effects of chronic cannabinoids administration in late-adolescence rats. PLoS One 2012; 7:e31731. [PMID: 22348124 PMCID: PMC3278466 DOI: 10.1371/journal.pone.0031731] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 01/12/2012] [Indexed: 11/19/2022] Open
Abstract
The use of cannabis can impair cognitive function, especially short-term memory. A controversial question is whether long-term cannabis use during the late-adolescence period can cause irreversible deficits in higher brain function that persist after drug use stops. In order to examine the short- and long-term effects of chronic exposure to cannabinoids, rats were administered chronic i.p. treatment with the CB1/CB2 receptor agonist WIN55,212-2 (WIN; 1.2 mg/kg) for two weeks during the late adolescence period (post-natal days 45–60) and tested for behavioral and electrophysiological measures of cognitive performance 24 hrs, 10 and 30 days after the last drug injection. The impairing effects of chronic WIN on short-term memory in the water maze and the object recognition tasks as well as long-term potentiation (LTP) in the ventral subiculum (vSub)-nucleus accumbens (NAc) pathway were temporary as they lasted only 24 h or 10 d after withdrawal. However, chronic WIN significantly impaired hippocampal dependent short-term memory measured in the object location task 24 hrs, 10, 30, and 75 days after the last drug injection. Our findings suggest that some forms of hippocampal-dependent short-term memory are sensitive to chronic cannabinoid administration but other cognitive impairments are temporary and probably result from a residue of cannabinoids in the brain or acute withdrawal effects from cannabinoids. Understanding the effects of cannabinoids on cognitive function may provide us with tools to overcome these impairments and for cannabinoids to be more favorably considered for clinical use.
Collapse
Affiliation(s)
- Hila Abush
- Department of Psychology, University of Haifa, Haifa, Israel
| | - Irit Akirav
- Department of Psychology, University of Haifa, Haifa, Israel
- * E-mail:
| |
Collapse
|
18
|
Zhang X, Liu X, Wang D, Liu H, Hao W. Conditioned place preference associated with level of palmitoylation of PSD-95 in rat hippocampus and nucleus accumbens. Neuropsychobiology 2012; 64:211-8. [PMID: 21912189 DOI: 10.1159/000327603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Accepted: 03/14/2011] [Indexed: 11/19/2022]
Abstract
Psychostimulant-mediated synaptic plasticity in the hippocampus and nucleus accumbens is one of the pathological features of addiction, a disease of learning and memory. Dynamic palmitoylation of PSD-95 modulates synaptic plasticity, but its role in addiction is not fully understood. Using a morphine-conditioned place preference (CPP) rat model and Acyl-biotin exchange (ABE) labeling we found a correlation between CPP and levels of palmitoylated PSD-95 in the hippocampus and nucleus accumbens. Rats that developed significant CPP had higher levels of palmitoylation of PSD-95 in the hippocampus and nucleus accumbens. Furthermore, palmitoylation of PSD-95 was significantly decreased in the hippocampus but increased in the nucleus accumbens during the beginning of withdrawal. With long-term withdrawal, palmitoylated PSD-95 in these regions recovered, while CPP waned and physical signs gradually disappeared. However, morphine reinjection restored strong CPP without producing any significant changes in palmitoylation of PSD-95. Our findings suggest that CPP is correlated with the dynamics of PSD-95 palmitoylation in rat hippocampus and nucleus accumbens, and could be one of the mechanisms for morphine-dependent synaptic plasticity.
Collapse
Affiliation(s)
- Xiaojie Zhang
- Mental Health Institute and WHO Collaborating Center for Psychosocial Factors, Drug Abuse and Health, Second Xiangya Hospital, Central South University, Changsha, PR China
| | | | | | | | | |
Collapse
|
19
|
Van den Oever MC, Lubbers BR, Goriounova NA, Li KW, Van der Schors RC, Loos M, Riga D, Wiskerke J, Binnekade R, Stegeman M, Schoffelmeer ANM, Mansvelder HD, Smit AB, De Vries TJ, Spijker S. Extracellular matrix plasticity and GABAergic inhibition of prefrontal cortex pyramidal cells facilitates relapse to heroin seeking. Neuropsychopharmacology 2010; 35:2120-33. [PMID: 20592718 PMCID: PMC3055295 DOI: 10.1038/npp.2010.90] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Successful treatment of drug addiction is hampered by high relapse rates during periods of abstinence. Neuroadaptation in the medial prefrontal cortex (mPFC) is thought to have a crucial role in vulnerability to relapse to drug seeking, but the molecular and cellular mechanisms remain largely unknown. To identify protein changes that contribute to relapse susceptibility, we investigated synaptic membrane fractions from the mPFC of rats that underwent 21 days of forced abstinence following heroin self-administration. Quantitative proteomics revealed that long-term abstinence from heroin self-administration was associated with reduced levels of extracellular matrix (ECM) proteins. After extinction of heroin self-administration, downregulation of ECM proteins was also present in the mPFC, as well as nucleus accumbens (NAc), and these adaptations were partially restored following cue-induced reinstatement of heroin seeking. In the mPFC, these ECM proteins are condensed in the perineuronal nets that exclusively surround GABAergic interneurons, indicating that ECM adaptation might alter the activity of GABAergic interneurons. In support of this, we observed an increase in the inhibitory GABAergic synaptic inputs received by the mPFC pyramidal cells after the re-exposure to heroin-conditioned cues. Recovering levels of ECM constituents by metalloproteinase inhibitor treatment (FN-439; i.c.v.) prior to a reinstatement test attenuated subsequent heroin seeking, suggesting that the reduced synaptic ECM levels during heroin abstinence enhanced sensitivity to respond to heroin-conditioned cues. We provide evidence for a novel neuroadaptive mechanism, in which heroin self-administration-induced adaptation of the ECM increased relapse vulnerability, potentially by augmenting the responsivity of mPFC GABAergic interneurons to heroin-associated stimuli.
Collapse
Affiliation(s)
- Michel C Van den Oever
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, The Netherlands.
| | - Bart R Lubbers
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Natalia A Goriounova
- Department of Integrative Neurophysiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Ka W Li
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Roel C Van der Schors
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Maarten Loos
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Danai Riga
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Joost Wiskerke
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Rob Binnekade
- Department of Anatomy and Neurosciences, VU Medical Center, Amsterdam, The Netherlands
| | - M Stegeman
- Department of Anatomy and Neurosciences, VU Medical Center, Amsterdam, The Netherlands
| | | | - Huibert D Mansvelder
- Department of Integrative Neurophysiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - August B Smit
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| | - Taco J De Vries
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands,Department of Anatomy and Neurosciences, VU Medical Center, Amsterdam, The Netherlands
| | - Sabine Spijker
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics & Cognitive Research, VU University Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
20
|
[Opioid rotation: a therapeutic choice in the management of refractory cancer pain]. Med Clin (Barc) 2010; 135:617-22. [PMID: 20673681 DOI: 10.1016/j.medcli.2010.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Accepted: 06/15/2010] [Indexed: 11/20/2022]
|
21
|
Abstract
The development of drug addiction progresses along a continuum from acute drug use to compulsive use and drug seeking behavior. Many researchers have focused on identifying the physiological mechanisms involved in drug addiction in order to develop effective pharmacotherapies. Neuroplasticity, the putative mechanism underlying learning and memory, is modified by drugs of abuse and may contribute to the development of the eventual addicted state. Innovative treatments directly targeting these drug-induced changes in brain reward components and circuits may be efficacious in reducing drug use and relapse.
Collapse
Affiliation(s)
- Jason L. Niehaus
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island
| | - Nelson D. Cruz-Bermúdez
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island
| | - Julie A. Kauer
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island
- Department of Neuroscience, Brown University, Providence, Rhode Island
| |
Collapse
|
22
|
Dong Z, Han H, Cao J, Xu L. Opioid withdrawal for 4 days prevents synaptic depression induced by low dose of morphine or naloxone in rat hippocampal CA1 area in vivo. Hippocampus 2009; 20:335-43. [DOI: 10.1002/hipo.20638] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
23
|
Abstract
This paper is the thirtieth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2007 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia; stress and social status; tolerance and dependence; learning and memory; eating and drinking; alcohol and drugs of abuse; sexual activity and hormones, pregnancy, development and endocrinology; mental illness and mood; seizures and neurologic disorders; electrical-related activity and neurophysiology; general activity and locomotion; gastrointestinal, renal and hepatic functions; cardiovascular responses; respiration and thermoregulation; and immunological responses.
Collapse
Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd.,Flushing, NY 11367, United States.
| |
Collapse
|
24
|
The role of tissue-type plasminogen activator system in amphetamine-induced conditional place preference extinction and reinstatement. Neuropsychopharmacology 2008; 33:2726-34. [PMID: 18256596 DOI: 10.1038/sj.npp.1301668] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Extracellular serine proteases of the plasminogen activator family (tissue-type plasminogen activator (tPA) and urokinase-type plasminogen activator (uPA) may modulate synaptic adhesion and associate with learning behavior. Psychostimulants strongly induce their expression in the mesolimbic dopaminergic pathway, but cocaine preferentially induces uPA, whereas morphine and amphetamine preferentially induce tPA. tPA-expressing animals displayed enhanced conditional place preference (CPP) for amphetamine compared with uPA-overexpressing animals. Thus, modulation of the plasminogen system in the brain might be a potential target against drugs of abuse. In the present study, we aim to identify whether tPA is involved in the acquisition/learning phase or in the expression/retrieval phase of conditioned drug preference. For this purpose, animals were injected with lentiviruses expressing or silencing tPA in the NAc and place preference was assessed. We found that tPA expression is associated with acquisition of place preference and animals overexpressing tPA spend >87% of the time in the drug-associated compartment, compared with 60% for control animals. When ectopic expression of tPA has been inhibited by doxycycline during acquisition, animals do no more associate the environment with the drug. Suppression of endogenous tPA expression in animals treated with LV-siRNA fully suppresses place preference, and these animals appear to avoid the drug-associated box. tPA overexpression delays extinction, but priming with low doses of amphetamine reinstates place preference even after full extinction. Together, these data clearly indicate that tPA plays an important role in acquisition of amphetamine-induced CPP, but its role in CPP expression does not seem important.
Collapse
|
25
|
Morphine withdrawal affects both delayed-escape behaviour in Morris water maze and hippocampal NR2A/2B expression ratio. Brain Res 2008; 1207:164-73. [DOI: 10.1016/j.brainres.2008.02.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Revised: 02/13/2008] [Accepted: 02/14/2008] [Indexed: 11/18/2022]
|
26
|
Xiao Y, Yang XF, Xu MY. Effect of acetylcholine on pain-related electric activities in hippocampal CA1 area of normal and morphinistic rats. Neurosci Bull 2008; 23:323-8. [PMID: 18064061 DOI: 10.1007/s12264-007-0048-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE To examine the effect of acetylcholine (ACh) on the electric activities of pain-excitation neurons (PEN) and pain-inhibitation neurons (PIN) in the hippocampal CA1 area of normal rats or morphinistic rats, and to explore the role of ACh in regulation of pain perception in CA1 area under normal condition and morphine addiction. METHODS The trains of electric impulses applied to sciatic nerve were set as noxious stimulation. The discharges of PEN and PIN in the CA1 area were recorded extracellularly by glass microelectrode. We observed the influence of intracerebroventricular (i.c.v.) injection of ACh and atropine on the noxious stimulation-evoked activities of PEN and PIN in the CA1 area. RESULTS Noxious stimulation enhanced the electric activity of PEN and depressed that of PIN in the CA1 area of both normal and addiction rats. In normal rats, ACh decrease the pain-evoked discharge frequency of PEN, while increased the frequency of PIN. These effects reached the peak value at 4 min after injection of ACh. In morphinistic rats, ACh also inhibited the PEN electric activity and potentialized the PIN electric activity, but the maximum effect appeared at 6 min after administration. The ACh-induced responses were significantly blocked by muscarinic receptor antagonist atropine. CONCLUSION Cholinergic neurons and muscarinic receptors in the hippocampal CA1 area are involved in the processing of nociceptive information and they may play an analgesia role in pain modulation. Morphine addiction attenuated the sensitivity of pain-related neurons to the noxious information.
Collapse
Affiliation(s)
- Yu Xiao
- Department of Physiology, Harbin Medical University, Harbin 150081, China
| | | | | |
Collapse
|
27
|
Garcia R, Spennato G, Nilsson-Todd L, Moreau JL, Deschaux O. Hippocampal low-frequency stimulation and chronic mild stress similarly disrupt fear extinction memory in rats. Neurobiol Learn Mem 2007; 89:560-6. [PMID: 18039585 DOI: 10.1016/j.nlm.2007.10.005] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2007] [Revised: 10/12/2007] [Accepted: 10/15/2007] [Indexed: 01/19/2023]
Abstract
Disruptions of fear extinction-related potentiation of synaptic efficacy in the connection between the hippocampus (HPC) and the medial prefrontal cortex (mPFC) have been shown to impair the recall of extinction memory. This study was undertaken to examine if chronic mild stress (CMS), which is known to alter induction of HPC-mPFC long-term potentiation, would also interfere with both extinction-related HPC-mPFC potentiation and extinction memory. Following fear conditioning (5 tone-shock pairings), rats were submitted to fear extinction (20 tone-alone presentations), which produced an increase in the amplitude of HPC-mPFC field potentials. HPC low-frequency stimulation (LFS), applied immediately after training, suppressed these changes and induced fear return during the retention test (5 tone-alone presentations). CMS, delivered before fear conditioning, did not interfere with fear extinction but blocked the development of extinction-related potentiation in the HPC-mPFC pathway and impaired the recall of extinction. These findings suggest that HPC LFS may provoke metaplastic changes in HPC outputs that may mimic alterations associated with a history of chronic stress.
Collapse
Affiliation(s)
- René Garcia
- Laboratoire de Neurobiologie et Psychopathologie, JE2441, Université de Nice-Sophia Antipolis, Nice, France.
| | | | | | | | | |
Collapse
|