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Nukitram J, Cheaha D, Thawaii S, Niyomdecha S, Kumarnsit E. Neural signaling of methamphetamine craving and seeking intensified by bupropion in the ventral tegmental area-cortico-accumbens circuitry in mice. Addict Biol 2022; 27:e13240. [PMID: 36301216 DOI: 10.1111/adb.13240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 08/02/2022] [Accepted: 09/22/2022] [Indexed: 01/24/2023]
Abstract
Previously, bupropion (BUP), a norepinephrine (NE)/dopamine (DA) transporter blocker and nicotinic acetylcholine receptors (nAChRs) antagonist, was found to intensify methamphetamine (METH) craving behaviours in mice. Intense craving causes relapse in drug dependence. This study characterized local field potential (LFP) patterns in the brain regions associated with METH-conditioned place preference (CPP) enhanced by BUP. Male Swiss albino ICR mice were implanted with LFP electrodes to the ventral tegmental area (VTA), medial prefrontal cortex (mPFC) and the nucleus accumbens core (NAcc). Animals received sessions to learn the association between injection effects (1 mg/kg METH and normal saline) with contextual environments (METH- and saline-paired compartments) during the conditioning phase. A total of 20 mg/kg BUP was given to animals before LFP, and behaviour recording in the CPP apparatus during the post-conditioning phase. The results showed that increased CPP scores and % number of entries to the METH-paired zone, as well as changes in VTA, mPFC and NAcc spectral powers and coherence among these areas, were associated with METH-CPP. Treatment with BUP increased VTA delta and gamma I, decreased mPFC alpha, increased NAcc gamma I and decreased gamma II powers. Coherence analyses revealed that BUP decreased gamma II VTA-mPFC and increased beta and gamma I VTA-NAcc connectivity. Altogether, BUP produced additional effects to that of METH-CPP alone. These findings demonstrated changes in neural circuit activities associated with METH-CPP intensified by BUP. Moreover, modulation of NE/DA systems and/or nAChRs actions in the VTA-cortico-accumbens loop might underlie METH craving and dependence.
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Affiliation(s)
- Jakkrit Nukitram
- Physiology Program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand.,Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand
| | - Dania Cheaha
- Biology Program, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand.,Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand
| | - Suppachai Thawaii
- Biology Program, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand
| | - Saree Niyomdecha
- Biology Program, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand
| | - Ekkasit Kumarnsit
- Physiology Program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand.,Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla, Thailand
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2
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Ashtari N, Radahmadi M, Alaei H. Preventive effects of fixed and progressive forced exercises on memory and brain electrical activity in morphine-addicted rats. AN ACAD BRAS CIENC 2022; 94:e20200596. [PMID: 35830068 DOI: 10.1590/0001-3765202220200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/28/2020] [Indexed: 11/22/2022] Open
Abstract
Exercise and addiction influence brain functions. The preventive effects of fixed and progressive forced exercises on both brain functions and body weight were investigated in morphine-addicted rats. Thirty-five rats were allocated to control, morphine, fixed exercise-morphine, and progressive exercise-morphine groups. Forced exercise was applied 1h/day for 21 days with morphine sulfate administered at doses of 10, 20, 30, 40, and 50 mg/kg for 5 consecutive days. The 50 mg/kg dose was repeated over the five subsequent days. Brain performance was evaluated using the passive avoidance test and EEG recordings. The passive avoidance test revealed no significant changes in brain functions (namely, latency, total dark stay time, and number of times entering the dark compartment). Compared to the control, the morphine group exhibited significantly lower alpha and beta waves but significantly higher delta and theta ones. Compared to the morphine group, the progressive and fixed exercise-morphine groups exhibited significant changes in their passive avoidance performance and only in the alpha wave of their EEG recordings. Progressive exercise improved learning, memory, and memory consolidation but reduced locomotor activity whereas fixed exercise affected EEG recordings in the addicted subjects. Clearly, different (fixed or progressive) exercise models produced different changes in brain functions.
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Affiliation(s)
- Niloofar Ashtari
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, 8174673461, Hezar Jerib Street, Isfahan, Iran
| | - Maryam Radahmadi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, 8174673461, Hezar Jerib Street, Isfahan, Iran
| | - Hojjatallah Alaei
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, 8174673461, Hezar Jerib Street, Isfahan, Iran
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3
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Zortea M, Beltran G, Alves RL, Vicuña P, Torres ILS, Fregni F, Caumo W. Spectral Power Density analysis of the resting-state as a marker of the central effects of opioid use in fibromyalgia. Sci Rep 2021; 11:22716. [PMID: 34811404 PMCID: PMC8608932 DOI: 10.1038/s41598-021-01982-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/01/2021] [Indexed: 12/02/2022] Open
Abstract
Spectral power density (SPD) indexed by electroencephalogram (EEG) recordings has recently gained attention in elucidating neural mechanisms of chronic pain syndromes and medication use. We compared SPD variations between 15 fibromyalgia (FM) women in use of opioid in the last three months (73.33% used tramadol) with 32 non-users. EEG data were obtained with Eyes Open (EO) and Eyes Closed (EC) resting state. SPD peak amplitudes between EO-EC were smaller in opioid users in central theta, central beta, and parietal beta, and at parietal delta. However, these variations were positive for opioid users. Multivariate analyses of variance (ANOVAs) revealed that EO-EC variations in parietal delta were negatively correlated with the disability due to pain, and central and parietal beta activity variations were positively correlated with worse sleep quality. These clinical variables explained from 12.5 to 17.2% of SPD variance. In addition, central beta showed 67% sensitivity / 72% specificity and parietal beta showed 73% sensitivity/62% specificity in discriminating opioid users from non-users. These findings suggest oscillations in EEG might be a sensitive surrogate marker to screen FM opioid users and a promising tool to understand the effects of opioid use and how these effects relate to functional and sleep-related symptoms.
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Affiliation(s)
- Maxciel Zortea
- Laboratory of Pain and Neuromodulation at Hospital de Clínicas de Porto Alegre (HCPA), Ramiro Barcelos, 2350, Bairro Rio Branco, Porto Alegre, RS, CEP 90035-003, Brazil
| | - Gerardo Beltran
- Laboratory of Pain and Neuromodulation at Hospital de Clínicas de Porto Alegre (HCPA), Ramiro Barcelos, 2350, Bairro Rio Branco, Porto Alegre, RS, CEP 90035-003, Brazil.,Post-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil.,Psychology Department, Universidad Catolica de Cuenca, UCACUE, Cuenca, Ecuador.,Institute of Neurosciences of the Universidad Catolica de Cuenca, UCACUE, Cuenca, Ecuador
| | - Rael Lopes Alves
- Laboratory of Pain and Neuromodulation at Hospital de Clínicas de Porto Alegre (HCPA), Ramiro Barcelos, 2350, Bairro Rio Branco, Porto Alegre, RS, CEP 90035-003, Brazil.,Post-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Paul Vicuña
- Laboratory of Pain and Neuromodulation at Hospital de Clínicas de Porto Alegre (HCPA), Ramiro Barcelos, 2350, Bairro Rio Branco, Porto Alegre, RS, CEP 90035-003, Brazil.,Post-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Iraci L S Torres
- Post-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil.,Pharmacology of Pain and Neuromodulation: Pre-Clinical Investigations Research Group, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil.,Department of Pharmacology, Institute of Health Sciences (ICBS), Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil.,Post-Graduate Program in Biological Sciences: Physiology and Biological Sciences: Pharmacology and Therapy, Institute of Health Sciences (ICBS), Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Felipe Fregni
- Berenson-Allen Center for Noninvasive Brain Stimulation (CNBS), Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, USA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, USA.,Physical Medicine and Rehabilitation Department, Harvard Medical School, Boston, USA.,Laboratory of Neuromodulation, Spalding Rehabilitation Hospital, Harvard Medical School, Boston, USA
| | - Wolnei Caumo
- Laboratory of Pain and Neuromodulation at Hospital de Clínicas de Porto Alegre (HCPA), Ramiro Barcelos, 2350, Bairro Rio Branco, Porto Alegre, RS, CEP 90035-003, Brazil. .,Post-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil. .,Surgery Department, School of Medicine, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil. .,Pain Treatment and Palliative Medicine Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
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4
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Tianeptine induces expression of dual specificity phosphatases and evokes rebound emergence of cortical slow wave electrophysiological activity. Neurosci Lett 2021; 764:136200. [PMID: 34464676 DOI: 10.1016/j.neulet.2021.136200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND The precise mechanism governing the antidepressant effects of tianeptine is unknown. Modulation of brain glutamatergic neurotransmission has been however implicated, suggesting potential shared features with rapid-acting antidepressants targeting N-methyl-D-aspartate receptors (NMDAR). Our recent studies suggest that a single subanesthetic dose of NMDAR antagonists ketamine or nitrous oxide (N2O) gradually evoke 1-4 Hz electrophysiological activity (delta-rhythm) of cerebral cortex that is accompanied by molecular signaling associated with synaptic plasticity (e.g. activation of tropomyosin receptor kinase B (TrkB) and inhibition of glycogen synthase kinase 3β (GSK3β)). METHODS We have here investigated the time-dependent effects of tianeptine (30 mg/kg, i.p.) on electrocorticogram, focusing on potential biphasic regulation of the delta-rhythm. Selected molecular markers associated with ketamine's antidepressant effects were analyzed in the medial prefrontal cortex after the treatment using quantitative polymerase chain reaction and western blotting. RESULTS An acute tianeptine treatment induced changes of electrocorticogram typical for active wakefulness that lasted for 2-2.5 h, which was followed by high amplitude delta-activity rebound. The levels of Arc and Homer1a, but not c-Fos, BdnfIV and Zif268, were increased by tianeptine. Phosphorylation of mitogen-activated protein kinase (MAPK), TrkB and GSK3β remained unaltered at 2-hours and at 3-hours post-treatment. Notably, tianeptine also increased the level of mRNA of several dual specificity phosphatases (Duspss) - negative regulators of MAPK. CONCLUSION Tianeptine produces acute changes of electrocorticogram resembling rapid-acting antidepressants ketamine and N2O. Concomitant regulation of Dusps may hamper the effects of tianeptine on MAPK pathway and influence the magnitude of homeostatic emergence of delta-activity and TrkB-GSK3β signaling.
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Magdy S, Gamal M, Samir NF, Rashed L, Emad Aboulhoda B, Mohammed HS, Sharawy N. IκB kinase inhibition remodeled connexins, pannexin-1, and excitatory amino-acid transporters expressions to promote neuroprotection of galantamine and morphine. J Cell Physiol 2021; 236:7516-7532. [PMID: 33855721 DOI: 10.1002/jcp.30387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 03/21/2021] [Accepted: 03/26/2021] [Indexed: 11/10/2022]
Abstract
Inflammatory pathway and disruption in glutamate homeostasis join at the level of the glia, resulting in various neurological disorders. In vitro studies have provided evidence that membrane proteins connexions (Cxs) are involved in glutamate release, meanwhile, excitatory amino-acid transporters (EAATs) are crucial for glutamate reuptake (clearance). Moreover, pannexin-1 (Panx-1) activation is more detrimental to neurons. Their expression patterns during inflammation and the impacts of IκB kinase (IKK) inhibition, morphine, and galantamine on the inflammatory-associated glutamate imbalance remain elusive. To investigate this, rats were injected with saline or lipopolysaccharide. Thereafter, vehicles, morphine, galantamine, and BAY-117082 were administered in different groups of animals. Subsequently, electroencephalography, enzyme-linked immunosorbent assay, western blot, and histopathological examinations were carried out and various indicators of inflammation and glutamate level were determined. Parallel analysis of Cxs, Panx-1, and EAAts in the brain was performed. Our findings strengthen the concept that unregulated expressions of Cxs, Panx-1, and EAATs contribute to glutamate accumulation and neuronal cell loss. Nuclear factor-kB (NF-κB) pathway can significantly contribute to glutamate homeostasis via modulating Cxs, Panx-1, and EAATs expressions. BAY-117082, via inhibition of IkK, promoted the anti-inflammatory effects of morphine as well as galantamine. We concluded that NF-κB is an important component of reshaping the expressions of Cxs, panx-1, and EAATs and the development of glutamate-induced neuronal degeneration.
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Affiliation(s)
- Shimaa Magdy
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Maha Gamal
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Nancy F Samir
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Laila Rashed
- Department of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Basma Emad Aboulhoda
- Department of Anatomy and Embryology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Haitham S Mohammed
- Department of Biophysics, Faculty of Science, Cairo University, Giza, Egypt
| | - Nivin Sharawy
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
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6
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Grotell M, Abdurakhmanova S, Elsilä LV, Korpi ER. Mice Lacking GABA A Receptor δ Subunit Have Altered Pharmaco-EEG Responses to Multiple Drugs. Front Pharmacol 2021; 12:706894. [PMID: 34234684 PMCID: PMC8255781 DOI: 10.3389/fphar.2021.706894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/11/2021] [Indexed: 11/13/2022] Open
Abstract
In the brain, extrasynaptically expressed ionotropic, δ subunit-containing γ-aminobutyric acid A-type receptors (δ-GABAARs) have been implicated in drug effects at both neuronal and behavioral levels. These alterations are supposed to be caused via drug-induced modulation of receptor ionophores affecting chloride ion-mediated inhibitory tonic currents. Often, a transgenic mouse model genetically lacking the δ-GABAARs (δ-KO) has been used to study the roles of δ-GABAARs in brain functions, because a specific antagonist of the δ-GABAARs is still lacking. We have previously observed with these δ-KO mice that activation of δ-GABAARs is needed for morphine-induced conditioning of place preference, and others have suggested that δ-GABAARs act as targets selectively for low doses of ethanol. Furthermore, activation of these receptors via drug-mediated agonism induces a robust increase in the slow-wave frequency bands of electroencephalography (EEG). Here, we tested δ-KO mice (compared to littermate wild-type controls) for the pharmaco-EEG responses of a broad spectrum of pharmacologically different drug classes, including alcohol, opioids, stimulants, and psychedelics. Gaboxadol (THIP), a known superagonist of δ-GABAARs, was included as the positive control, and as expected, δ-KO mice produced a blunted pharmaco-EEG response to 6 mg/kg THIP. Pharmaco-EEGs showed notable differences between treatments but also differences between δ-KO mice and their wild-type littermates. Interestingly mephedrone (4-MMC, 5 mg/kg), an amphetamine-like stimulant, had reduced effects in the δ-KO mice. The responses to ethanol (1 g/kg), LSD (0.2 mg/kg), and morphine (20 mg/kg) were similar in δ-KO and wild-type mice. Since stimulants are not known to act on δ-GABAARs, our findings on pharmaco-EEG effects of 4-MMC suggest that δ-GABAARs are involved in the secondary indirect regulation of the brain rhythms after 4-MMC.
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Affiliation(s)
- Milo Grotell
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | | | - Lauri V Elsilä
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Esa R Korpi
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
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7
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Suhaimi FW, Hassan Z, Mansor SM, Müller CP. The effects of chronic mitragynine (Kratom) exposure on the EEG in rats. Neurosci Lett 2021; 745:135632. [PMID: 33444671 DOI: 10.1016/j.neulet.2021.135632] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 02/06/2023]
Abstract
Mitragynine is the main alkaloid isolated from the leaves of Mitragyna speciosa Korth (Kratom). Kratom has been widely used to relieve pain and opioid withdrawal symptoms in humans but may also cause memory deficits. Here we investigated the changes in brain electroencephalogram (EEG) activity after acute and chronic exposure to mitragynine in freely moving rats. Vehicle, morphine (5 mg/kg) or mitragynine (1, 5 and 10 mg/kg) were administered for 28 days, and EEG activity was repeatedly recorded from the frontal cortex, neocortex and hippocampus. Repeated exposure to mitragynine increased delta, but decreased alpha powers in both cortical regions. It further decreased delta power in the hippocampus. These findings suggest that acute and chronic mitragynine can have profound effects on EEG activity, which may underlie effects on behavioral activity and cognition, particularly learning and memory function.
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Affiliation(s)
- Farah Wahida Suhaimi
- Centre for Drug Research, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia.
| | - Zurina Hassan
- Centre for Drug Research, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia
| | - Sharif Mahsufi Mansor
- Centre for Drug Research, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia
| | - Christian P Müller
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nuremberg, Schwabachanlage 6, 91054, Erlangen, Germany.
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8
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Zanettini C, Scaglione A, Keighron JD, Giancola JB, Lin SC, Newman AH, Tanda G. Pharmacological classification of centrally acting drugs using EEG in freely moving rats: an old tool to identify new atypical dopamine uptake inhibitors. Neuropharmacology 2018; 161:107446. [PMID: 30481526 DOI: 10.1016/j.neuropharm.2018.11.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 11/05/2018] [Accepted: 11/23/2018] [Indexed: 10/27/2022]
Abstract
Atypical dopamine uptake inhibitors (DUIs) bind to the dopamine transporter and inhibit the reuptake of dopamine but have lower abuse potential than psychostimulants. Several atypical DUIs can block abuse-related effects of cocaine and methamphetamine, thus making them potential medication candidates for psychostimulant use disorders. The aim of the current study is to establish an in-vivo assay using EEG for the rapid identification of atypical DUIs with potential for medication development. The typical DUIs cocaine and methylphenidate dose-dependently decreased the power of the alpha, beta, and gamma bands. The atypical DUI modafinil and its F-analog, JBG1-049, decreased the power of beta, but in contrast to cocaine, none of the other frequency bands, while JHW007 did not significantly alter the EEG spectrum. The mu-opioid receptor agonists heroin and morphine dose-dependently decreased the power of gamma and increased power of the other bands. The effect of morphine on EEG power bands was antagonized by naltrexone. The NMDA receptor antagonist ketamine increased the power of all frequency bands. Therefore, typical and atypical DUIs and drugs of other classes differentially affected EEG spectra, showing distinctive features in the magnitude and direction of their effects on EEG. Comparative analysis of the effects of test drugs on EEG indicates a potential atypical profile of JBG1-049 with similar potency and effectiveness to its parent compound modafinil. These data suggest that EEG can be used to rapidly screen compounds for potential activity at specific pharmacological targets and provide valuable information for guiding the early stages of drug development. This article is part of the issue entitled 'Special Issue on Neurotransmitter Transporters'.
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Affiliation(s)
- Claudio Zanettini
- Medication Development Program, Molecular Targets and Medications Discovery Branch, NIDA-IRP, NIH/DHHS, Baltimore, MD, USA.
| | - Alessandro Scaglione
- Neural Circuits and Cognition Unit, Laboratory of Behavioral Neuroscience, NIA-IRP, NIH/DHHS, Baltimore, MD, USA
| | - Jacqueline D Keighron
- Medication Development Program, Molecular Targets and Medications Discovery Branch, NIDA-IRP, NIH/DHHS, Baltimore, MD, USA
| | - JoLynn B Giancola
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, NIDA-IRP, NIH/DHHS, Baltimore, MD, USA
| | - Shih-Chieh Lin
- Neural Circuits and Cognition Unit, Laboratory of Behavioral Neuroscience, NIA-IRP, NIH/DHHS, Baltimore, MD, USA
| | - Amy H Newman
- Medication Development Program, Molecular Targets and Medications Discovery Branch, NIDA-IRP, NIH/DHHS, Baltimore, MD, USA; Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, NIDA-IRP, NIH/DHHS, Baltimore, MD, USA
| | - Gianluigi Tanda
- Medication Development Program, Molecular Targets and Medications Discovery Branch, NIDA-IRP, NIH/DHHS, Baltimore, MD, USA
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9
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Aristakesyan EA. Evolutionary aspects of interaction of sleep and stress: Phylo- and ontogenetic approach. J EVOL BIOCHEM PHYS+ 2010. [DOI: 10.1134/s0022093009060106] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Jang HS, Kim JY, Kim SH, Lee MG. Role of dopamine receptors on electroencephalographic changes produced by repetitive apomorphine treatments in rats. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2009; 13:147-51. [PMID: 19885030 DOI: 10.4196/kjpp.2009.13.3.147] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Revised: 04/10/2009] [Accepted: 04/22/2009] [Indexed: 11/15/2022]
Abstract
Repeated psychostimulants induce electroencephalographic (EEG) changes, which reflect adaptation of the neural substrate related to dopaminergic pathways. To study the role of dopamine receptors in EEG changes, we examined the effect of apomorphine, the dopamine D1 receptor antagonist, SCH-23390, and the D2 receptor antagonist, haloperidol, on EEG in rats. For single and repeated apomorphine treatment groups, the rats received saline or apomorphine for 4 days followed by a 3-day withdrawal period and then apomorphine (2.5 mg/kg, i.p.) challenge after pretreatment with saline, SCH-23390, or haloperidol on the day of the experiment. EEGs from the frontal and parietal cortices were recorded. On the frontal cortex, apomorphine decreased the power of all the frequency bands in the single treatment group, and increased the theta (4.5~8 Hz) and alpha (8~13 Hz) powers in the repeated treatment group. Changes in both groups were reversed to the control values by SCH-23390. On the parietal cortex, single apomorphine treatment decreased the power of some frequency bands, which were reversed by haloperidol but not by SCH-23390. Repeated apomorphine treatment did not produce significant changes in the power profile. These results show that adaptation of dopamine pathways by repeated apomorphine treatment could be identified with EEG changes such as increases in theta and alpha power of the frontal cortex, and this adaptation may occur through changes in the D1 receptor and/or the D2 receptor.
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Affiliation(s)
- Hwan Soo Jang
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu 700-422, Korea
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11
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Gianolio DA, Philbrook M, Avila LZ, Young LE, Plate L, Santos MR, Bernasconi R, Liu H, Ahn S, Sun W, Jarrett PK, Miller RJ. Hyaluronan-Tethered Opioid Depots: Synthetic Strategies and Release Kinetics In Vitro and In Vivo. Bioconjug Chem 2008; 19:1767-74. [DOI: 10.1021/bc8000479] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Diego A. Gianolio
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Michael Philbrook
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Luis Z. Avila
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Lauren E. Young
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Lars Plate
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Michael R. Santos
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Richard Bernasconi
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Hanlan Liu
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Sujin Ahn
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Wei Sun
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Peter K. Jarrett
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
| | - Robert J. Miller
- Drug and Biomaterial Research and Development, Genzyme Corporation, 153 Second Avenue, Waltham, Massachusetts 02451
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12
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Zuo YF, Wang JY, Chen JH, Qiao ZM, Han JS, Cui CL, Luo F. A comparison between spontaneous electroencephalographic activities induced by morphine and morphine-related environment in rats. Brain Res 2006; 1136:88-101. [PMID: 17234161 DOI: 10.1016/j.brainres.2006.11.099] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2006] [Revised: 11/01/2006] [Accepted: 11/21/2006] [Indexed: 12/21/2022]
Abstract
Previous studies demonstrated that drug cues could elicit drug-like or withdrawal-like effect, both subjectively and physiologically. However, few studies have compared the central activities induced by a drug-related environment and the drug itself. The aim of this study was to observe and compare electroencephalographic (EEG) changes induced by acute morphine administration and by the morphine-related environment. EEG activities were recorded via twelve skull electrodes scattered on the left and right cortex in conscious, freely moving rats, either after acute morphine administration or after successful training of conditioned place preference. Acute administration of morphine (0.1, 0.5, 1, 5, 10, 20 mg/kg, i.p.) produced an increase in absolute EEG power in the delta, theta, alpha1, alpha2, beta1, and beta2 bands, as well as a decrease in the gamma band. Topographic mapping revealed a maximal increase in the lateral leads in the theta band and a maximal change in the centro-frontal region in the remaining bands. After place conditioning training, the morphine-related environment induced a diffuse decrease in absolute power in the delta, theta, alpha1, alpha2, beta1, and beta2 bands, which was opposite to the changes induced by acute morphine administration. In addition, the changes in relative power induced by the two situations also diverged. These results indicate that the central mechanisms underlying the motivation of morphine-induced place preference may be somehow different from those underlying the reward effects produced by acute morphine administration.
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Affiliation(s)
- Yan-Fang Zuo
- Neuroscience Research Institute, Peking University, Health Science Center, 38 Xueyuan Road, Haidian District, Beijing 10083, P.R. China
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Abstract
This article is the eighteenth installment of our annual review of research concerning the opiate system. It includes articles published during 1995 reporting the behavioral effects of the opiate peptides and antagonists, excluding the purely analgesic effects. The specific topics covered this year include stress: tolerance and dependence; eating; drinking; gastrointestinal, renal, and hepatic function; mental illness and mood; learning, memory, and reward; cardiovascular responses; respiration and thermoregulation; seizures and other neurological disorders; electrical-related activity; general activity and locomotion; sex, pregnancy, and development; immunological responses; and other behaviors.
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Affiliation(s)
- G A Olson
- Department of Psychology, University of New Orleans, LA 70148, USA
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