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Wang KC, Ojeda NB, Wang H, Chiang HS, Tucci MA, Lee JW, Wei HC, Kaizaki-Mitsumoto A, Tanaka S, Dankhara N, Tien LT, Fan LW. Neonatal brain inflammation enhances methamphetamine-induced reinstated behavioral sensitization in adult rats analyzed with explainable machine learning. Neurochem Int 2024; 176:105743. [PMID: 38641026 DOI: 10.1016/j.neuint.2024.105743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/15/2024] [Accepted: 04/15/2024] [Indexed: 04/21/2024]
Abstract
Neonatal brain inflammation produced by intraperitoneal (i.p.) injection of lipopolysaccharide (LPS) results in long-lasting brain dopaminergic injury and motor disturbances in adult rats. The goal of the present work is to investigate the effect of neonatal systemic LPS exposure (1 or 2 mg/kg, i.p. injection in postnatal day 5, P5, male rats)-induced dopaminergic injury to examine methamphetamine (METH)-induced behavioral sensitization as an indicator of drug addiction. On P70, subjects underwent a treatment schedule of 5 once daily subcutaneous (s.c.) administrations of METH (0.5 mg/kg) (P70-P74) to induce behavioral sensitization. Ninety-six hours following the 5th treatment of METH (P78), the rats received one dose of 0.5 mg/kg METH (s.c.) to reintroduce behavioral sensitization. Hyperlocomotion is a critical index caused by drug abuse, and methamphetamine administration has been shown to produce remarkable locomotor-enhancing effects. Therefore, a random forest model was used as the detector to extract the feature interaction patterns among the collected high-dimensional locomotor data. Our approaches identified neonatal systemic LPS exposure dose and METH-treated dates as features significantly associated with METH-induced behavioral sensitization, reinstated behavioral sensitization, and perinatal inflammation in this experimental model of drug addiction. Overall, the analysis suggests that the implementation of machine learning strategies is sensitive enough to detect interaction patterns in locomotor activity. Neonatal LPS exposure also enhanced METH-induced reduction of dopamine transporter expression and [3H]dopamine uptake, reduced mitochondrial complex I activity, and elevated interleukin-1β and cyclooxygenase-2 concentrations in the P78 rat striatum. These results indicate that neonatal systemic LPS exposure produces a persistent dopaminergic lesion leading to a long-lasting change in the brain reward system as indicated by the enhanced METH-induced behavioral sensitization and reinstated behavioral sensitization later in life. These findings indicate that early-life brain inflammation may enhance susceptibility to drug addiction development later in life, which provides new insights for developing potential therapeutic treatments for drug addiction.
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Affiliation(s)
- Kuo-Ching Wang
- Department of Anesthesiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei City, Taiwan
| | - Norma B Ojeda
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA; Department of Advanced Biomedical Education, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Haifeng Wang
- Department of Industrial and Systems Engineering, Mississippi State University, Mississippi State, MS 39762
| | - Han-Sun Chiang
- School of Medicine, Fu Jen Catholic University, Xinzhuang Dist, New Taipei City 24205, Taiwan
| | - Michelle A Tucci
- Department of Anesthesiology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Jonathan W Lee
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Han-Chi Wei
- School of Medicine, Fu Jen Catholic University, Xinzhuang Dist, New Taipei City 24205, Taiwan
| | - Asuka Kaizaki-Mitsumoto
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA; Department of Toxicology, Showa University Graduate School of Pharmacy, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Sachiko Tanaka
- Center for Research and Development in Pharmacy Education, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Nilesh Dankhara
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Lu-Tai Tien
- School of Medicine, Fu Jen Catholic University, Xinzhuang Dist, New Taipei City 24205, Taiwan.
| | - Lir-Wan Fan
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA.
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Costa BY, Santos LG, Marianno P, Rae M, de Almeida MG, de Brito MC, Eichler R, Camarini R. Carbetocin Inhibits Behavioral Sensitization to Ethanol in Male and Female Mice, Independent of Corticosterone Levels. Toxics 2023; 11:893. [PMID: 37999545 PMCID: PMC10674331 DOI: 10.3390/toxics11110893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/17/2023] [Accepted: 10/27/2023] [Indexed: 11/25/2023]
Abstract
Oxytocin (OXT), a pro-social peptide, is increasingly recognized as a potential protective substance against drug addiction. In the context of ethanol, previous research has shown OXT's properties in reducing self-administration, alleviating motor impairment in rodents, and reducing craving in humans. However, its role in behavioral sensitization, a neuroadaptive response resulting from repeated drug exposure linked to an increased drug incentive, remains unexplored. OXT is recognized for its role in regulating the hypothalamic-pituitary-adrenal (HPA) axis, in which corticosterone is acknowledged as a significant factor in the development of behavioral sensitization. This study aimed to investigate the effects of carbetocin (CBT), an analogue of OXT, on the expression of behavioral sensitization to ethanol and the concurrent alterations in plasma corticosterone levels in male and female Swiss mice. We also aimed to confirm previous studies on OXT's impact on ethanol consumption in male mice, but with a focus on CBT, using the two-bottle choice model and the drinking in the dark (DID) methodology. For the sensitization study, the mice received either ethanol (1.8 g/kg, i.p.) or saline treatments daily for 15 consecutive days, followed by treatment with carbetocin (0.64 mg/kg, i.p.) or a vehicle for 6 days. Subsequently, on day 22, all the animals underwent an ethanol challenge to assess the expression of behavioral sensitization. The plasma corticosterone levels were measured on days 21 and 22. The CBT effectively prevented the expression of ethanol-induced behavioral sensitization in both male and female subjects, with no alterations having been detected in their corticosterone levels. In the ethanol consumption study, following an initial phase of ethanol acquisition, the male mice underwent a 6-day treatment with CBT i.p. or saline before being re-exposed to ethanol. We also found a reduction in their ethanol consumption due to the CBT treatment. In conclusion, carbetocin emerges as a promising and effective intervention for mitigating ethanol-induced behavioral sensitization and reducing ethanol intake, highlighting its potential significance in alcohol addiction treatment.
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Affiliation(s)
- Beatriz Yamada Costa
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
| | - Luana Gasparini Santos
- School of Pharmaceutical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil;
| | - Priscila Marianno
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
| | - Mariana Rae
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
| | - Marina Gomes de Almeida
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
| | - Malcon Carneiro de Brito
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
| | - Rosângela Eichler
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
| | - Rosana Camarini
- Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil; (B.Y.C.); (P.M.); (M.R.); (M.C.d.B.); (R.E.)
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Ahmed MR, Zheng C, Dunning JL, Ahmed MS, Ge C, Sanders Pair F, Gurevich VV, Gurevich EV. Arrestin-3-assisted activation of JNK3 mediates dopaminergic behavioral and signaling plasticity in vivo. bioRxiv 2023:2023.10.27.564447. [PMID: 37961199 PMCID: PMC10634923 DOI: 10.1101/2023.10.27.564447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
In rodents with unilateral ablation of the substantia nigra neurons supplying dopamine to the striatum, chronic treatment with the dopamine precursor L-DOPA or dopamine agonists induces a progressive increase of behavioral responses, a process known as behavioral sensitization. The sensitization is blunted in arrestin-3 knockout mice. Using virus-mediated gene delivery to the dopamine-depleted striatum of arrestin-3 knockout mice, we found that the restoration of arrestin-3 fully rescued behavioral sensitization, whereas its mutant defective in JNK activation did not. A 25-residue arrestin-3-derived peptide that facilitates JNK3 activation in cells, expressed ubiquitously or selectively in the direct pathway striatal neurons, fully rescued sensitization, whereas an inactive homologous arrestin-2-derived peptide did not. Behavioral rescue was accompanied by the restoration of JNK3 activity and of JNK-dependent phosphorylation of the transcription factor c-Jun in the dopamine-depleted striatum. Thus, arrestin-3-dependent JNK3 activation in direct pathway neurons is a critical element of the molecular mechanism underlying sensitization.
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Affiliation(s)
- Mohamed R. Ahmed
- Department of Pharmacology, Vanderbilt University, Nashville, TN 37232
| | - Chen Zheng
- Department of Pharmacology, Vanderbilt University, Nashville, TN 37232
| | | | - Mohamed S. Ahmed
- Department of Pharmacology, Vanderbilt University, Nashville, TN 37232
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MORIYA Y, KASAHARA Y, ISHIHARA K, HALL FS, HAGINO Y, HEN R, IKEDA K, UHL GR, SORA I. Heterozygous and homozygous gene knockout of the 5-HT1B receptor have different effects on methamphetamine-induced behavioral sensitization. Behav Pharmacol 2023; 34:393-403. [PMID: 37668157 PMCID: PMC10527357 DOI: 10.1097/fbp.0000000000000745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
The psychostimulant drug methamphetamine (METH) causes euphoria in humans and locomotor hyperactivity in rodents by acting on the mesolimbic dopamine (DA) pathway and has severe abuse and addiction liability. Behavioral sensitization, an increased behavioral response to a drug with repeated administration, can persist for many months after the last administration. Research has shown that the serotonin 1B (5-HT1B) receptor plays a critical role in the development and maintenance of drug addiction, as well as other addictive behaviors. This study examined the role of 5-HT1B receptors in METH-induced locomotor sensitization using 5-HT1B knockout (KO) mice. To clarify the action of METH in 5-HT1B KO mice the effects of METH on extracellular levels of DA (DAec) and 5-HT (5-HTec) in the caudate putamen (CPu) and the nucleus accumbens (NAc) were examined. Locomotor sensitization and extracellular monoamine levels were determined in wild-type mice (5-HT1B +/+), heterozygous 5-HT1B receptor KO (5-HT1B +/-) mice and homozygous 5-HT1B receptor KO mice (5-HT1B -/-). Behavioral sensitization to METH was enhanced in 5-HT1B -/- mice compared to 5-HT1B +/+ mice but was attenuated in 5-HT1B +/- mice compared to 5-HT1B +/+ and 5-HT1B -/- mice. In vivo, microdialysis demonstrated that acute administration of METH increases DAec levels in the CPu and NAc of 5-HT1B KO mice compared to saline groups. In 5-HT1B +/- mice, METH increased 5-HTec levels in the CPu, and DAec levels in the NAc were higher than in others.5-HT1B receptors play an important role in regulating METH-induced behavioral sensitization.
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Affiliation(s)
- Yuki MORIYA
- Department of Biological Psychiatry, Graduate School of Medicine, Sendai, Tohoku University, Japan
- Department of Disaster Psychiatry, International Research Institute of Disaster Science (IRIDeS), Graduate School of Medicine, Tohoku University, Sendai, Japan
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yoshiyuki KASAHARA
- Department of Biological Psychiatry, Graduate School of Medicine, Sendai, Tohoku University, Japan
- Department of Disaster Psychiatry, International Research Institute of Disaster Science (IRIDeS), Graduate School of Medicine, Tohoku University, Sendai, Japan
- Department of Maternal and Fetal Therapeutics, Tohoku University Graduate, School of Medicine, Sendai, Japan
- Department of Maternal and Child Healthcare Medical Science, Tohoku, University Graduate School of Medicine, Sendai, Japan
| | - Kana ISHIHARA
- Department of Biological Psychiatry, Graduate School of Medicine, Sendai, Tohoku University, Japan
| | - F. Scott HALL
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, OH, USA
| | - Yoko HAGINO
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - René HEN
- Department of Neuroscience and Pharmacology, Columbia University Medical Center, NY, USA
| | - Kazutaka IKEDA
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - George R. UHL
- Departments of Neurology and Pharmacology, University of Maryland School of Medicine, and VA Maryland Healthcare System, MD, USA
| | - Ichiro SORA
- Department of Biological Psychiatry, Graduate School of Medicine, Sendai, Tohoku University, Japan
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
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Wang Y, Hou X, Wei S, Yan J, Chen Z, Zhang M, Zhang Q, Lu Y, Zhang Q, Zheng T, Jia J, Dong B, Li Y, Zhang Y, Liang J, Li G. The roles of ubiquitin-proteasome system and regulator of G protein signaling 4 in behavioral sensitization induced by a single morphine exposure. Brain Behav 2023; 13:e2922. [PMID: 36793204 PMCID: PMC10013946 DOI: 10.1002/brb3.2922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/23/2022] [Accepted: 02/04/2023] [Indexed: 02/17/2023] Open
Abstract
AIMS Opioid addiction is a major public health issue, yet its underlying mechanism is still unknown. The aim of this study was to explore the roles of ubiquitin-proteasome system (UPS) and regulator of G protein signaling 4 (RGS4) in morphine-induced behavioral sensitization, a well-recognized animal model of opioid addiction. METHODS We explored the characteristics of RGS4 protein expression and polyubiquitination in the development of behavioral sensitization induced by a single morphine exposure in rats, and the effect of a selective proteasome inhibitor, lactacystin (LAC), on behavioral sensitization. RESULTS Polyubiquitination expression was increased in time-dependent and dose-related fashions during the development of behavioral sensitization, while RGS4 protein expression was not significantly changed during this phase. Stereotaxic administration of LAC into nucleus accumbens (NAc) core inhibited the establishment of behavioral sensitization. CONCLUSION UPS in NAc core is positively involved in behavioral sensitization induced by a single morphine exposure in rats. Polyubiquitination was observed during the development phase of behavioral sensitization, while RGS4 protein expression was not significantly changed, indicating that other members of RGS family might be substrate proteins in UPS-mediated behavioral sensitization.
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Affiliation(s)
- Yanting Wang
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xingzi Hou
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, China
| | - Shoupeng Wei
- Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Jiaqing Yan
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhe Chen
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mingyu Zhang
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qingying Zhang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, China
| | - Yingyuan Lu
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, China
| | - Qingjie Zhang
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Tiange Zheng
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Jingyi Jia
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Bin Dong
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ying Li
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuanyuan Zhang
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianhui Liang
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Guohui Li
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Lu MF, Fu Q, Qiu TY, Yang JH, Peng QH, Hu ZZ. The CaMKII-dependent phosphorylation of GABA B receptors in the nucleus accumbens was involved in cocaine-induced behavioral sensitization in rats. CNS Neurosci Ther 2023; 29:1345-1356. [PMID: 36756679 PMCID: PMC10068462 DOI: 10.1111/cns.14107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Previous studies have established that the regulation of prolonged, distal neuronal inhibition by the GABAB heteroreceptor (GABAB R) is determined by its stability, and hence residence time, on the plasma membrane. AIMS Here, we show that GABAB R in the nucleus accumbens (NAc) of rats affects the development of cocaine-induced behavioral sensitization by mediating its perinucleus internalization and membrane expression. MATERIALS & METHODS By immunofluorescent labeling, flow cytometry analysis, Co-immunoprecipitation and open field test, we measured the role of Ca2+ /calmodulin-dependent protein kinase II (CaMKII) to the control of GABAB R membrane anchoring and cocaine induced-behavioral sensitization. RESULTS Repeated cocaine treatment in rats (15 mg/kg) significantly decreases membrane levels of GABAB1 R and GABAB2 R in the NAc after day 3, 5 and 7. The membrane fluorescence and protein levels of GABAB R was also decreased in NAc GAD67 + neurons post cocaine (1 μM) treatment after 5 min. Moreover, the majority of internalized GABAB1 Rs exhibited perinuclear localization, a decrease in GABAB1 R-pHluroin signals was observed in cocaine-treated NAc neurons. By contrast, membrane expression of phosphorylated CaMKII (pCaMKII) post cocaine treatment was significantly increased after day 1, 3, 5 and 7. Baclofen blocked the cocaine induced behavioral sensitization via inhibition of cocaine enhanced-pCaMKII-GABAB1 R interaction. CONCLUSION These findings reveal a new mechanism by which pCaMKII-GABAB R signaling can promote psychostimulant-induced behavioral sensitization.
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Affiliation(s)
- Ming F Lu
- Department of Pathophysiology, College of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Tumor Pathogens and Molecular Pathology, Department of Pathology, Schools of Basic Medical Sciences and Pharmaceutical Sciences, Nanchang University, Nanchang, Jiangxi, China
| | - Qiang Fu
- Department of Respiration, Department Two, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi, China
| | - Tian Y Qiu
- Department of Pathophysiology, College of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Tumor Pathogens and Molecular Pathology, Department of Pathology, Schools of Basic Medical Sciences and Pharmaceutical Sciences, Nanchang University, Nanchang, Jiangxi, China
| | - Jian H Yang
- Department of Physiology, College of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Qing H Peng
- Department of Anesthesiology, The First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi, China
| | - Zhen Z Hu
- Department of Pathophysiology, College of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Tumor Pathogens and Molecular Pathology, Department of Pathology, Schools of Basic Medical Sciences and Pharmaceutical Sciences, Nanchang University, Nanchang, Jiangxi, China
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Santos-Baldaia RD, Wuo-Silva R, Sanabria V, Baldaia MA, Yokoyama TS, Coppi AA, Hollais AW, Marinho EAV, Oliveira-Lima AJ, Longo BM. Distinctive Neuroanatomic Regions Involved in Cocaine-Induced Behavioral Sensitization in Mice. Biomedicines 2023; 11. [PMID: 36830920 DOI: 10.3390/biomedicines11020383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 01/31/2023] Open
Abstract
The present study aimed to characterize the phenomenon of behavioral sensitization to cocaine and to identify neuroanatomical structures involved in the induction and expression phases of this phenomenon. For this, in experiment 1 (induction phase), mice were treated with saline or cocaine every second day for 15 days (conditioning period), in the open-field or in their home-cages. In experiment 2 (expression phase), the same protocol was followed, except that after the conditioning period the animals were not manipulated for 10 days, and after this interval, animals were challenged with cocaine. Neuroanatomical structures involved in the induction and expression phases were identified by stereological quantification of c-Fos staining in the dorsomedial prefrontal cortex (dmPFC), nucleus accumbens core (NAc core and shell (NAc shell), basolateral amygdala (BLA), and ventral tegmental area (VTA). Neuroanatomical analysis indicated that in the induction phase, cocaine-conditioned animals had higher expression of c-Fos in the dmPFC, NAc core, BLA, and VTA, whereas in the expression phase, almost all areas had higher expression except for the VTA. Therefore, environmental context plays a major role in the induction and expression of behavioral sensitization, although not all structures that compose the mesolimbic system contribute to this phenomenon.
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Bergum N, Berezin CT, King CM, Vigh J. µ-Opioid Receptors Expressed by Intrinsically Photosensitive Retinal Ganglion Cells Contribute to Morphine-Induced Behavioral Sensitization. Int J Mol Sci 2022; 23. [PMID: 36555511 DOI: 10.3390/ijms232415870] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
Opioid drugs are the most effective tools for treating moderate to severe pain. Despite their analgesic efficacy, long-term opioid use can lead to drug tolerance, addiction, and sleep/wake disturbances. While the link between opioids and sleep/wake problems is well-documented, the mechanism underlying opioid-related sleep/wake problems remains largely unresolved. Importantly, intrinsically photosensitive retinal ganglion cells (ipRGCs), the cells that transmit environmental light/dark information to the brain's sleep/circadian centers to regulate sleep/wake behavior, express μ-opioid receptors (MORs). In this study, we explored the potential contribution of ipRGCs to opioid-related sleep/circadian disruptions. Using implanted telemetry transmitters, we measured changes in horizontal locomotor activity and body temperature in mice over the course of a chronic morphine paradigm. Mice lacking MORs expressed by ipRGCs (McKO) exhibited reduced morphine-induced behavioral activation/sensitization compared with control littermates with normal patterns of MOR expression. Contrastingly, mice lacking MORs globally (MKO) did not acquire morphine-induced locomotor activation/sensitization. Control mice also showed morphine-induced hypothermia in both the light and dark phases, while McKO littermates only exhibited morphine-induced hypothermia in the dark. Interestingly, only control animals appeared to acquire tolerance to morphine's hypothermic effect. Morphine, however, did not acutely decrease the body temperature of MKO mice. These findings support the idea that MORs expressed by ipRGCs could contribute to opioid-related sleep/wake problems and thermoregulatory changes.
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Szechtman H, Dvorkin-Gheva A, Gomez-Marin A. A virtual library for behavioral performance in standard conditions-rodent spontaneous activity in an open field during repeated testing and after treatment with drugs or brain lesions. Gigascience 2022; 11:6756450. [PMID: 36261217 PMCID: PMC9581716 DOI: 10.1093/gigascience/giac092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/31/2022] [Accepted: 09/06/2022] [Indexed: 11/04/2022] Open
Abstract
Background Beyond their specific experiment, video records of behavior have future value—for example, as inputs for new experiments or for yet unknown types of analysis of behavior—similar to tissue or blood sample banks in life sciences where clinically derived or otherwise well-described experimental samples are stored to be available for some unknown potential future purpose. Findings Research using an animal model of obsessive-compulsive disorder employed a standardized paradigm where the behavior of rats in a large open field was video recorded for 55 minutes on each test. From 43 experiments, there are 19,976 such trials that amount to over 2 years of continuous recording. In addition to videos, there are 2 video-derived raw data objects: XY locomotion coordinates and plots of animal trajectory. To motivate future use, the 3 raw data objects are annotated with a general schema—one that abstracts the data records from their particular experiment while providing, at the same time, a detailed list of independent variables bearing on behavioral performance. The raw data objects are deposited as 43 datasets but constitute, functionally, a library containing 1 large dataset. Conclusions Size and annotation schema give the library high reuse potential: in applications using machine learning techniques, statistical evaluation of subtle factors, simulation of new experiments, or as educational resource. Ultimately, the library can serve both as the seed and as the test bed to create a machine-searchable virtual library of linked open datasets for behavioral performance in defined conditions.
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Affiliation(s)
- Henry Szechtman
- Correspondence address. Henry Szechtman, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Health Science Centre, Room 4N82, Hamilton, Ontario, Canada L8S 4K1. E-mail:
| | - Anna Dvorkin-Gheva
- Department of Pathology & Molecular Medicine, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Alex Gomez-Marin
- Department of Systems Neurobiology, Instituto de Neurociencias (CSIC-UMH), 03550 Sant Joan d'Alacant, Alicante, Spain
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Allain AE, Aribo O, Medrano MC, Fournier ML, Bertrand SS, Caille S. Impact of acute and chronic nicotine administration on midbrain dopaminergic neuron activity and related behaviors in TRPV1 knock-out juvenile mice. Eur J Neurosci 2021; 55:697-713. [PMID: 34939238 DOI: 10.1111/ejn.15577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 11/03/2022]
Abstract
The addictive properties of nicotine, the main alkaloid in tobacco and tobacco-derived products, largely depend on its action on the activity of midbrain dopamine (DA) neurons. The Transient Receptor Potential Vanilloid 1 (TRPV1) channel has also been examined as an emerging contributor to addiction-related symptoms due to its ability to modulate midbrain neurons. Thus, the objective of our study was to explore the role of TRPV1 receptors (TRPV1Rs) on nicotine-induced behaviors and associated response of DA neuron activity. Both wild type juvenile mice and juvenile mice with invalidation of the TRPV1R gene were exposed to acute or chronic nicotine 0.3 mg/kg administration. We analyzed locomotor activity in response to the drug. In addition, we performed cell-attached and whole-cell recordings from ventral tegmental area (VTA) neurons after nicotine exposure. Our results showed that the genetic deletion of TRPV1Rs reduced nicotine-induced locomotor sensitization. In addition, it provided evidence in support of TRPV1Rs being regulators of inhibitory synaptic transmission in the VTA. However, TRPV1Rs did not seem to modulate either nicotine-induced conditioning place preference or nicotine-evoked electrical activity of DA neurons. In conclusion, TRPV1Rs modulate nicotine-induced psychomotor sensitization in mice independently of a control on VTA DA neuron activity. Thus, TRPV1R control may depend on another key player of the mesolimbic circuit.
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Affiliation(s)
- Anne-Emilie Allain
- Univ. Bordeaux, CNRS, INCIA, UMR 5287, Bordeaux, France.,Univ. Bordeaux, CNRS, PHYCELL Platform INCIA, UMR 5287, Bordeaux, France
| | - Oceane Aribo
- Univ. Bordeaux, CNRS, INCIA, UMR 5287, Bordeaux, France
| | | | | | - Sandrine S Bertrand
- Univ. Bordeaux, CNRS, INCIA, UMR 5287, Bordeaux, France.,Univ. Bordeaux, CNRS, PHYCELL Platform INCIA, UMR 5287, Bordeaux, France
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11
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Cabib S, Campus P, Latagliata EC, Orsini C, Tarmati V. Repetitive and Inflexible Active Coping and Addiction-like Neuroplasticity in Stressed Mice of a Helplessness-Resistant Inbred Strain. Behav Sci (Basel) 2021; 11:174. [PMID: 34940109 DOI: 10.3390/bs11120174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/23/2021] [Accepted: 11/30/2021] [Indexed: 01/02/2023] Open
Abstract
Dysfunctional coping styles are involved in the development, persistence, and relapse of psychiatric diseases. Passive coping with stress challenges (helplessness) is most commonly used in animal models of dysfunctional coping, although active coping strategies are associated with generalized anxiety disorder, social anxiety disorder, panic, and phobias as well as obsessive-compulsive and post-traumatic stress disorder. This paper analyzes the development of dysfunctional active coping strategies of mice of the helplessness–resistant DBA/2J (D2) inbred strain, submitted to temporary reduction in food availability in an uncontrollable and unavoidable condition. The results indicate that food-restricted D2 mice developed a stereotyped form of food anticipatory activity and dysfunctional reactive coping in novel aversive contexts and acquired inflexible and perseverant escape strategies in novel stressful situations. The evaluation of FosB/DeltaFosB immunostaining in different brain areas of food-restricted D2 mice revealed a pattern of expression typically associated with behavioral sensitization to addictive drugs and compulsivity. These results support the conclusion that an active coping style represents an endophenotype of mental disturbances characterized by perseverant and inflexible behavior.
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12
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Gill WD, Burgess KC, Vied C, Brown RW. Transgenerational evidence of increases in dopamine D2 receptor sensitivity in rodents: Impact on sensorimotor gating, the behavioral response to nicotine and BDNF. J Psychopharmacol 2021; 35:1188-1203. [PMID: 34291671 PMCID: PMC9169618 DOI: 10.1177/02698811211033927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND/AIMS Neonatal quinpirole (NQ) treatment to rats increases dopamine D2 (DAD2) receptor sensitivity in adult animals. We investigated if increased DAD2 sensitivity would be passed to the next (F1) generation, and if these animals demonstrated sensorimotor gating deficits and enhanced behavioral responses to nicotine. METHODS Male and female rats were intraperitoneal (IP) administered quinpirole (1 mg/kg) or saline (NS) from postnatal day (P)1-21. Animals were either behaviorally tested (F0) or raised to P60 and mated, creating F1 offspring. RESULTS Experiment 1 revealed that F1 generation animals that were the offspring of at least one NQ-treated founder increased yawning behavior, a DAD2-mediated behavioral event, in response to acute quinpirole (0.1 mg/kg). F1 generation rats also demonstrated increased striatal β arrestin-2 and decreased phospho-AKT signaling, consistent with increased G-protein independent DAD2 signaling, which was equal to F0 NQ-treated founders, although this was not observed in all groups. RNA-Seq analysis revealed significant gene expression changes in the F1 generation that were offspring of both NQ-treated founders compared to F0 NQ founders and controls, with enrichment in sensitivity to stress hormones and cell signaling pathways. In Experiment 2, all F1 generation offspring demonstrated sensorimotor gating deficits compared to controls, which were equivalent to F0 NQ-treated founders. In Experiment 3, all F1 generation animals demonstrated enhanced nicotine behavioral sensitization and nucleus accumbens (NAcc) brain-derived neurotrophic factor (BDNF) protein. Further, F1 generation rats demonstrated enhanced adolescent nicotine conditioned place preference equivalent to NQ-treated founders conditioned with nicotine. CONCLUSIONS This represents the first demonstration of transgenerational effects of increased DAD2 sensitivity in a rodent model.
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Affiliation(s)
- Wesley Drew Gill
- James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Katherine C Burgess
- James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Cynthia Vied
- Translational Science Laboratory, Florida State University College of Medicine, Tallahassee, FL, USA
| | - Russell W Brown
- James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
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Ryu IS, Kim J, Yang JH, Seo SY, Sohn S, Kim S, Lee K, Seo JW, Choe ES. Exposure to Commercial Cigarette Smoke Produces Psychomotor Sensitization Via Hyperstimulation of Glutamate Response in the Dorsal Striatum. Brain Sci 2020; 11:brainsci11010014. [PMID: 33374316 PMCID: PMC7830476 DOI: 10.3390/brainsci11010014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/11/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022] Open
Abstract
Cigarette smoke is a highly complex mixture of nicotine and non-nicotine constituents. Exposure to cigarette smoke enhances tobacco dependence by potentiating glutamatergic neurotransmission via stimulation of nicotinic acetylcholine receptors (nAChRs). We investigated the effects of nicotine and non-nicotine alkaloids in the cigarette smoke condensates extracted from two commercial cigarette brands in South Korea (KCSC A and KCSC B) on psychomotor behaviors and glutamate levels in the dorsal striatum. Repeated and challenge administration of KCSCs (nicotine content: 0.4 mg/kg, subcutaneous) increased psychomotor behaviors (ambulatory, rearing, and rotational activities) and time spent in psychoactive behavioral states compared to exposure to nicotine (0.4 mg/kg) alone. The increase in psychomotor behaviors lasted longer when exposed to repeated and challenge administration of KCSCs compared to nicotine alone. In parallel with sustained increase in psychomotor behaviors, repeated administration of KCSCs also caused long-lasting glutamate release in the dorsal striatum compared to nicotine alone. KCSC-induced changes in psychomotor behaviors and glutamate levels in the dorsal striatum were found to be strongly correlated. These findings suggest that non-nicotine alkaloids in commercial cigarette smoke synergistically act with nicotine on nAChRs, thereby upregulating glutamatergic response in the dorsal striatum, which contributes to the hypersensitization of psychomotor behaviors.
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Affiliation(s)
- In Soo Ryu
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
- Research Center for Convergence Toxicology, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea;
- Correspondence: (I.S.R.); (E.S.C.); Tel.: +82-42-610-8293 (I.S.R.); +82-51-510-2272 (E.S.C.)
| | - Jieun Kim
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
| | - Ju Hwan Yang
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
| | - Su Yeon Seo
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
- Korean Medicine Fundamental Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 34054, Korea
| | - Sumin Sohn
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
| | - Sunghyun Kim
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
| | - Kyuhong Lee
- Inhalation Toxicology Research Center, Korea Institute of Toxicology, 30 Baekhak 1-gil, Jeongeup 56212, Korea;
| | - Joung-Wook Seo
- Research Center for Convergence Toxicology, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea;
| | - Eun Sang Choe
- Department of Biological Sciences, Pusan National University, 63-2 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (J.K.); (J.H.Y.); (S.Y.S.); (S.S.); (S.K.)
- Correspondence: (I.S.R.); (E.S.C.); Tel.: +82-42-610-8293 (I.S.R.); +82-51-510-2272 (E.S.C.)
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14
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Yoon D, Ryu IS, Shin WC, Ka M, Kim HG, Jang EY, Kim OH, Lee YS, Seo JW, Lee DY. Mitigating Effects of Liriope platyphylla on Nicotine-Induced Behavioral Sensitization and Quality Control of Compounds. Brain Sci 2020; 10:E654. [PMID: 32967122 DOI: 10.3390/brainsci10090654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 09/18/2020] [Accepted: 09/19/2020] [Indexed: 11/16/2022] Open
Abstract
In this study we investigated the mitigating effects of Liriope platyphylla Wang et Tang extract on behavioral sensitization and the quantification of its major compounds. The extract of L. platyphylla reduces the expression of tyrosine hydroxylase (TH) protein, which is increased by nicotine, back to normal levels, and increases the expression of dopamine transporter (DAT) protein, which is reduced by nicotine, back to normal levels in PC12 cells. In this study, rats received nicotine (0.4 mg/kg, subcutaneously) only for seven days and then received extract of L. platyphylla (200 or 400 mg/kg, oral) 1 h prior to nicotine administration for an additional seven days. The extract of L. platyphylla reduced locomotor activity compared to the nicotine control group in rats. The extract of L. platyphylla significantly attenuated the repeated nicotine-induced DAT protein expression in the nucleus accumbens (NAc), but there was no effect on increased TH protein expression in the dorsal striatum. These findings suggest that L. platyphylla extract has a mitigating effect on nicotine-induced behavioral sensitization by modulating DAT protein expression in the NAc. For quality control of L. plathyphylla, spicatoside A and D, which are saponin compounds, were quantified in the L. platyphylla extract. The amounts of spicatoside A and D in L. platyphylla extract obtained from ultra-high-performance liquid chromatography with tandem mass spectrometry were 0.148 and 0.272 mg/g, respectively. The identification of these compounds in L. platyphylla, which can be used for quality control, provides important information for the development of drugs to treat nicotine dependence.
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Petković B, Kesić S, Ristić S, Pavković Ž, Podgorac J, Stojadinović G, Pešić V. A New Look at an Old Drug: Cumulative Effects of Low Ribavirin Doses in Amphetamine-Sensitized Rats. Curr Pharm Des 2020; 26:3884-3894. [PMID: 32213154 PMCID: PMC8383471 DOI: 10.2174/1381612826666200326125821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 02/22/2020] [Indexed: 11/22/2022]
Abstract
Background Psychotic states related to psychostimulant misuse in patients with hepatitis C virus infection may complicate acceptance and reaction to antiviral treatment. This observation equally applies to the widely used ribavirin therapy. Objective We examined psychomotor and body weight gain responses to low ribavirin doses after cessation of intermittent amphetamine treatment in adult rats to assess its role in neurobehavioral outcome during psychostimulant withdrawal. Method The model of amphetamine-induced (1.5 mg/kg/day, i.p., 7 consecutive days) motor sensitization and affected body weight gain was established in adult male Wistar rats. Then, additional cohort of amphetamine-sensitized rats was subjected to saline (0.9% NaCl; 1 mL/kg/day; i.p.) or ribavirin (10, 20 and 30 mg/kg/day, i.p.) treatment for 7 consecutive days. Animals’ motor activity in a novel environment was monitored after the 1st and the 7th saline/ribavirin injection. Body weight gain was calculated as appropriate. Determination and quantification of ribavirin in the brain tissue were performed also. Results The 1st application of ribavirin to amphetamine-sensitized rats affected/decreased their novelty-induced motor activity only at a dose of 30 mg/kg. After the 7th application, ribavirin 30 mg/kg/day still decreased, while 10 and 20 mg/kg/day increased novelty-induced motor activity. These behavioral effects coincided with the time required to reach maximum ribavirin concentration in the brain. Body weight gain during withdrawal was not influenced by any of the doses tested. Conclusion Ribavirin displays central effects that in repeated treatment, depending on the applied dose, could significantly influence psychomotor response but not body weight gain during psychostimulant/amphetamine withdrawal.
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Affiliation(s)
- Branka Petković
- Department of Neurophysiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Srđan Kesić
- Department of Neurophysiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Slavica Ristić
- Institute for Research and Development, Galenika a.d., Belgrade, Serbia
| | - Željko Pavković
- Department of Neurobiology, Institute for Biological Research "Sinisa Stankovic" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jelena Podgorac
- Department of Neurophysiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Gordana Stojadinović
- Department of Neurophysiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Vesna Pešić
- Department of Neurobiology, Institute for Biological Research "Sinisa Stankovic" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Arenas MC, Blanco-Gandía MC, Miñarro J, Manzanedo C. Prepulse Inhibition of the Startle Reflex as a Predictor of Vulnerability to Develop Locomotor Sensitization to Cocaine. Front Behav Neurosci 2020; 13:296. [PMID: 32116585 PMCID: PMC7008852 DOI: 10.3389/fnbeh.2019.00296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/27/2019] [Indexed: 12/21/2022] Open
Abstract
Prepulse inhibition (PPI) of the startle reflex is a measure of sensory-motor synchronization. A deficit in PPI has been observed in psychiatric patients, especially those with schizophrenia and vulnerable subjects, since the neural bases of this disorder are also involved in the regulation of PPI. Recently, we have reported that baseline PPI levels in mice can predict their sensitivity to the conditioned reinforcing effects of cocaine in the conditioned place preference (CPP) paradigm. Mice with a low PPI presented a lower sensitivity to the conditioned rewarding effects of cocaine; however, once they acquired conditioned preference with a higher dose of the drug, a more persistent associative effect of cocaine with respect to environmental cues was evident in these animals when compared with High-PPI mice. Therefore, we proposed that the PPI paradigm can determine subjects with a higher vulnerability to the effects of cocaine. Developing locomotor sensitization after pre-exposure to cocaine is considered an indicator of transitioning from recreational use to a compulsive consumption of the drug. Thus, the aim of the present study was to evaluate whether subjects with a low PPI display a higher locomotor sensitization induced by cocaine. First, male and female OF1 mice were classified as High- or Low-PPI according to their baseline PPI levels. Subsequently, the motor effects induced by an acute dose of cocaine (Experiments 1 and 2) and the development of locomotor sensitization induced by pre-exposure to this drug (Experiments 3 and 4) were recorded using two apparatuses (Ethovision and actimeter). Low-PPI mice presented low sensitivity to the motor effects of an acute dose of cocaine, but a high increase of activity after repeated administration of the drug, thus suggesting a great developed behavioral sensitization. Differences after pretreatment with cocaine vs. saline were more pronounced among Low-PPI subjects than among High-PPI animals. These results endorse our hypothesis that the PPI paradigm can detect subjects who are more likely to display behaviors induced by cocaine and which can increase the risk of developing a cocaine use disorder. Herein, we further discuss whether a PPI deficit can be considered an endophenotype for cocaine use disorder.
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Affiliation(s)
- M Carmen Arenas
- Unidad de investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de València, Valencia, Spain
| | - María Carmen Blanco-Gandía
- Departamento de Psicología y Sociología, Facultad de Ciencias Sociales y Humanas, Universidad de Zaragoza, Campus de Teruel, Teruel, Spain
| | - José Miñarro
- Unidad de investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de València, Valencia, Spain
| | - Carmen Manzanedo
- Unidad de investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de València, Valencia, Spain
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Huang J, Yang G, Li Z, Leung CK, Wang W, Li Y, Liu L, Shen B, He C, He Y, Zeng X, Li J. Involvement of dopamine D3 receptor and dopamine transporter in methamphetamine-induced behavioral sensitization in tree shrews. Brain Behav 2020; 10:e01533. [PMID: 31943832 PMCID: PMC7010569 DOI: 10.1002/brb3.1533] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/15/2019] [Accepted: 12/29/2019] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION This study aims to establish a methamphetamine (METH)-induced behavioral sensitization model using tree shrews, as well as to measure the protein expression of the dopamine D3 receptor (D3R) and dopamine transporter (DAT). METHODS Forty tree shrews were equally and randomly divided into four experimental groups: those administered with 1, 2, and 4 mg/kg METH and a control group (treated with an equal amount of normal saline). Each experimental group was repeatedly exposed to METH for nine consecutive days to induce the development of behavioral sensitization, followed by four days of withdrawal (without the METH treatment) to induce the transfer of behavioral sensitization, then given 0.5 mg/kg of METH to undergo the expression of behavioral sensitization. Altered locomotor and stereotypic behaviors were measured daily via open-field experiments during the development and expression stages, and weight changes were also recorded. Then, the Western blot method was used to detect the expression levels of D3R and DAT in three brain regions: the nucleus accumbens, prefrontal cortex, and dorsal striatum 24 hr after the last behavioral test. RESULTS METH administration augmented motor-stimulant responses and stereotypic behaviors in all experimental groups, and stereotypic behaviors intensified more in the groups treated with 2 and 4 mg/kg METH. Motion distance, speed, and trajectory were significantly elevated in all experimental, however, METH at 4 mg/kg induced more stereotypic behaviors, decreasing these locomotor activities as compared with the 2 mg/kg METH group. 2 and 4 mg/kg METH significantly upregulated and downregulated D3R and DAT expression levels, respectively, in three brain regions, and these changes are more pronounced in 2 mg/kg METH. CONCLUSIONS These results indicated that this animal model may be used to study the neurobiological mechanisms that underly the development and expression of behavioral sensitization to METH. Deregulated D3R and DAT expression may be involved in the METH-induced behavioral sensitization.
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Affiliation(s)
- Jian Huang
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Genmeng Yang
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Zhen Li
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Chi-Kwan Leung
- School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China.,CUHK-SDU Joint Laboratory of Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China
| | - Wenguang Wang
- Center of Tree Shrew Germplasm Resources, Institute of Medical Biology, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Yunnan Innovation Team of Standardization and Application Research in Tree Shrew, the Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Yuanyuan Li
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Liu Liu
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Baoyu Shen
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Cuihua He
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Yongwang He
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Xiaofeng Zeng
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Juan Li
- School of Basic Medicine, Kunming Medical University, Kunming, China
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Urb M, Niinep K, Matsalu T, Kipper K, Herodes K, Zharkovsky A, Timmusk T, Anier K, Kalda A. The role of DNA methyltransferase activity in cocaine treatment and withdrawal in the nucleus accumbens of mice. Addict Biol 2020; 25:e12720. [PMID: 30730091 DOI: 10.1111/adb.12720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 12/07/2018] [Accepted: 01/08/2019] [Indexed: 01/02/2023]
Abstract
An increasing number of reports have provided crucial evidence that epigenetic modifications, such as DNA methylation, may be involved in initiating and establishing psychostimulant-induced stable changes at the cellular level by coordinating the expression of gene networks, which then manifests as long-term behavioral changes. In this study, we evaluated the enzyme activity of DNA methyltransferases (DNMTs) after cocaine treatment and during withdrawal. Furthermore, we studied how genetic or pharmacological inhibition of DNMTs in mouse nucleus accumbens (NAc) affects the induction and expression of cocaine-induced behavioral sensitization. Our results showed that after silencing Dnmt3a in the NAc during the induction phase of cocaine-induced sensitization, overall DNMT activity decreases, correlating negatively with behavioral sensitization. Reduced Dnmt3a mRNA during this phase was the largest contributing factor for decreased DNMT activity. Cocaine withdrawal and a challenge dose increased DNMT activity in the NAc, which was associated with the expression of behavioral sensitization. Long-term selective Dnmt3a transcription silencing in the NAc did not alter DNMT activity or the expression of cocaine-induced behavioral sensitization. However, bilateral intra-NAc injection of a non-specific inhibitor of DNMT (RG108) during withdrawal from cocaine decreased DNMT activity in the NAc and had a small effect on the expression of cocaine-induced behavioral sensitization. Thus, cocaine treatment and withdrawal is associated with biphasic changes in DNMT activity in the NAc, and the expression of behavioral sensitization decreases with non-selective inhibition of DNMT but not with selective silencing of Dnmt3a.
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Affiliation(s)
- Mari Urb
- Department of PharmacologyInstitute of Biomedicine and Translational Medicine, University of Tartu Estonia
| | - Kerly Niinep
- Department of PharmacologyInstitute of Biomedicine and Translational Medicine, University of Tartu Estonia
| | - Terje Matsalu
- Department of PharmacologyInstitute of Biomedicine and Translational Medicine, University of Tartu Estonia
| | - Karin Kipper
- Institute of Chemistry, University of Tartu Estonia
| | - Koit Herodes
- Institute of Chemistry, University of Tartu Estonia
| | - Alexander Zharkovsky
- Department of PharmacologyInstitute of Biomedicine and Translational Medicine, University of Tartu Estonia
| | - Tõnis Timmusk
- Institute of Chemistry and Biotechnology, Tallinn University of Technology Estonia
| | - Kaili Anier
- Department of PharmacologyInstitute of Biomedicine and Translational Medicine, University of Tartu Estonia
| | - Anti Kalda
- Department of PharmacologyInstitute of Biomedicine and Translational Medicine, University of Tartu Estonia
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19
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Lijffijt M, Green CE, Balderston N, Iqbal T, Atkinson M, Vo-Le B, Vo-Le B, O’Brien B, Grillon C, Swann AC, Mathew SJ. A Proof-of-Mechanism Study to Test Effects of the NMDA Receptor Antagonist Lanicemine on Behavioral Sensitization in Individuals With Symptoms of PTSD. Front Psychiatry 2019; 10:846. [PMID: 31920733 PMCID: PMC6923195 DOI: 10.3389/fpsyt.2019.00846] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/24/2019] [Indexed: 12/21/2022] Open
Abstract
Background: Individuals with post-traumatic stress disorder (PTSD) have a heightened sensitivity to subsequent stressors, addictive drugs, and symptom recurrence, a form of behavioral sensitization. N-methyl-D-aspartate receptors (NMDARs) are involved in the establishment and activation of sensitized behavior. Objective: We describe a protocol of a randomized placebo-controlled Phase 1b proof-of-mechanism trial to examine target engagement, safety, tolerability, and possible efficacy of the NMDAR antagonist lanicemine in individuals with symptoms of PTSD (Clinician Administered PTSD Scale [CAPS-5] score ≥ 25) and evidence of behavioral sensitization measured as enhanced anxiety-potentiated startle (APS; T-score ≥ 2.8). Methods: Subjects (n = 24; age range 21-65) receive three 60-min intravenous infusions of placebo or 100 mg lanicemine over 5 non-consecutive days. Primary endpoint is change in APS from pre-treatment baseline to after the third infusion. NMDAR engagement is probed with resting state EEG gamma band power, 40 Hz auditory steady state response, the mismatch negativity amplitude, and P50 sensory gating. Change in CAPS-5 scores is an exploratory clinical endpoint. Bayesian statistical methods will evaluate endpoints to determine suitability of this agent for further study. Conclusion: In contrast to traditional early-phase trials that use symptom severity to track treatment efficacy, this study tracks engagement of the study drug on expression of behavioral sensitization, a functional mechanism likely to cut across disorders. This experimental therapeutics design is consistent with recent NIMH-industry collaborative studies, and could serve as a template for testing novel pharmacological agents in psychiatry. Clinical Trial Registration: www.ClinicalTrials.gov, identifier NCT03166501.
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Affiliation(s)
- Marijn Lijffijt
- Research Service Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
| | - Charles E. Green
- Department of Psychiatry and Behavioral Sciences, UTHealth McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
- Department of Pediatrics - Center for Evidence Based Medicine, UTHealth McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Nicholas Balderston
- Section on Neurobiology of Fear and Anxiety, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States
| | - Tabish Iqbal
- Research Service Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
| | - Megan Atkinson
- Department of Anesthesiology, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- Department of Anesthesiology, Baylor College of Medicine, Houston, TX, United States
| | - Brittany Vo-Le
- Research Service Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
| | - Bylinda Vo-Le
- Research Service Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
| | - Brittany O’Brien
- Research Service Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
| | - Christian Grillon
- Department of Pediatrics - Center for Evidence Based Medicine, UTHealth McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Alan C. Swann
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
- Mental Health Care Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
| | - Sanjay J. Mathew
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
- Mental Health Care Line, Michael E. DeBakey VA Medical Center, Houston, TX, United States
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20
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Lv Y, Hu RR, Jing M, Zhao TY, Wu N, Song R, Li J, Hu G. Selective dopamine D3 receptor antagonist YQA14 inhibits morphine-induced behavioral sensitization in wild type, but not in dopamine D3 receptor knockout mice. Acta Pharmacol Sin 2019; 40:583-8. [PMID: 30224637 DOI: 10.1038/s41401-018-0153-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/17/2018] [Indexed: 12/15/2022] Open
Abstract
Increasing preclinical evidence demonstrates that dopamine D3 receptor (D3R) antagonists are a potential option for the treatment of drug addiction. The reinstatement of the addiction can be triggered by environmental stimuli that acquire motivational salience through repeated associations with the drug's effects. YQA14 is a novel D3R antagonist that has exhibited pharmacotherapeutic efficacy in reducing cocaine and amphetamine reward and relapse to drug seeking in mice. In this study we investigated the effects of YQA14 on morphine-induced context-specific locomotor sensitization in mice. We showed that repeated injection of YQA14 (6.25-25 mg/kg every day ip) prior to morphine (10 mg/kg every day sc) not only inhibited the acquisition, but also significantly attenuated the expression of morphine-induced locomotor sensitization. Furthermore, in the expression phase, one single injection of YQA14 (6.25-25 mg/kg, ip) dose-dependently inhibited the expression of morphine-induced behavioral sensitization. Moreover, YQA14 inhibited the expression of morphine-induced behavioral sensitization in wild mice (WT), but not in D3R knockout (D3R-/-) mice in the expression phase. In addition, D3R-/- mice also displayed the reduction in the expression phase compared with WT mice. In summary, this study demonstrates that blockade or knockout of the D3R inhibits morphine-induced behavior sensitization, suggesting that D3R plays an important role in the pathogenesis and etiology of morphine addiction, and it might be a potential target for clinical management of opioid addiction.
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21
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Broussard E, Reyes-Vazquez C, Dafny N. Methylphenidate dose-response behavioral and neurophysiological study of the ventral tegmental area and nucleus accumbens in adolescent rats. Eur J Neurosci 2019; 50:2635-2652. [PMID: 30866123 DOI: 10.1111/ejn.14402] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 02/20/2019] [Accepted: 03/04/2019] [Indexed: 01/03/2023]
Abstract
The psychostimulant methylphenidate (MPD) is the most common medication used in treating ADHD in children. Studies have shown an increasing prevalence among adolescents without ADHD to take MPD as a cognitive booster and recreational drug, even though it is a Schedule II drug and has a high potential for abuse. The objective of this study is to explore if there is an association between the animals' behavioral and neurophysiological responses to acute and/or chronic methylphenidate exposure within the ventral tegmental area and the nucleus accumbens, and to compare how these two brain structures fire in response to methylphenidate. Freely moving adolescent rats implanted with semimicroelectrodes within the VTA and NAc were divided into three MPD dosing groups: 0.6, 2.5, and 10 mg/kg i.p., as well as a saline control group. The animals were divided into two groups based on their behavioral responses to chronic MPD, behavioral sensitization and tolerance, and the neuronal responses of the two groups were compared for each MPD dosing. Significant differences in the proportion of neuronal units in the VTA and NAc responding to MPD were observed at the 0.6 and 10.0 mg/kg MPD dosing groups. Moreover, the same doses of 0.6, 2.5, and 10.0 mg/kg MPD elicited behavioral sensitization in some animals and behavioral tolerance in others. This specific study shows that the VTA and NAc neurons respond differently to the same doses of MPD. MPD has different neuronal and behavioral effects depending on the individual, the dosage of MPD, and the brain structure studied.
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Affiliation(s)
| | - Cruz Reyes-Vazquez
- Departmento de Fisiologia Division de Investigacion, Universidad Nacional Autonoma de Mexico, Mexico, Mexico
| | - Nachum Dafny
- University of Texas McGovern Medical School, Houston, Texas
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22
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Morató X, Gonçalves FQ, Lopes JP, Jauregui O, Soler C, Fernández-Dueñas V, Cunha RA, Ciruela F. Chronic adenosine A 2A receptor blockade induces locomotor sensitization and potentiates striatal LTD IN GPR37-deficient mice. J Neurochem 2019; 148:796-809. [PMID: 30578680 DOI: 10.1111/jnc.14653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 12/09/2018] [Accepted: 12/17/2018] [Indexed: 11/30/2022]
Abstract
Adenosine A2A receptors (A2A R) play a key role in modulating dopamine-dependent locomotor activity, as heralded by the sensitization of locomotor activity upon chronic A2A R blockade, which is associated with elevated dopamine levels and altered corticostriatal synaptic plasticity. Since the orphan receptor GPR37 has been shown to modulate A2A R function in vivo, we aimed to test whether the A2A R-mediated sensitization of locomotor activity is GPR37-dependent and involves adaptations of synaptic plasticity. To this end, we administered a selective A2A R antagonist, SCH58261 (1 mg/kg, i.p.), daily for 14 days, and the locomotor sensitization, striatum-dependent cued learning, and corticostriatal synaptic plasticity (i.e., long-term depression) were compared in wild-type and GPR37-/- mice. Notably, GPR37 deletion promoted A2A R-associated locomotor sensitization but not striatum-dependent cued learning revealed upon chronic SCH58261 treatment of mice. Furthermore, chronic A2A R blockade potentiated striatal long-term depression in corticostriatal synapses of GPR37-/- but not of wild-type mice, thus correlating well with neurochemical alterations of the adenosinergic system. Overall, these results revealed the importance of GPR37 regulating A2A R-dependent locomotor sensitization and synaptic plasticity in the basal ganglia circuitry. OPEN SCIENCE BADGES: This article has received a badge for *Open Materials* because it provided all relevant information to reproduce the study in the manuscript. The complete Open Science Disclosure form for this article can be found at the end of the article. More information about the Open Practices badges can be found at https://cos.io/our-services/open-science-badges/. Open Science: This manuscript was awarded with the Open Materials Badge. For more information see: https://cos.io/our-services/open-science-badges/.
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Affiliation(s)
- Xavier Morató
- Unitat de Farmacologia, Departament Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Francisco Q Gonçalves
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - João P Lopes
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Olga Jauregui
- Scientific and Technological Centers of University of Barcelona (CCiTUB), Barcelona, Spain
| | - Concepció Soler
- Unitat d'Immunologia, Departament Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Víctor Fernández-Dueñas
- Unitat de Farmacologia, Departament Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Rodrigo A Cunha
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Francisco Ciruela
- Unitat de Farmacologia, Departament Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
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23
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Wimmer ME, Vassoler FM, White SL, Schmidt HD, Sidoli S, Han Y, Garcia BA, Pierce RC. Impaired cocaine-induced behavioral plasticity in the male offspring of cocaine-experienced sires. Eur J Neurosci 2019; 49:1115-1126. [PMID: 30565761 DOI: 10.1111/ejn.14310] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 10/19/2018] [Accepted: 11/23/2018] [Indexed: 12/26/2022]
Abstract
Our previous work indicated that male, but not female, offspring of cocaine-experienced sires display blunted cocaine self-administration. We extended this line of investigation to examine behavioral sensitization, a commonly used model of cocaine-induced behavioral and neuronal plasticity. Results indicated that male, but not female, offspring of cocaine-taking sires showed deficits in the ability of repeated systemic cocaine injections to induce augmented locomotor activity. The reduced cocaine sensitization phenotype in male progeny was associated with changes in histone post-translational modifications, epigenetic processes that regulate gene expression by controlling the accessibility of genes to transcriptional machinery, in the nucleus accumbens of first-generation male progeny. Thus, five histone post-translational modifications were significantly altered in the male progeny of cocaine-exposed sires. In contrast, self-administration of nicotine was unaltered in male and female offspring suggesting that the intergenerational effects of paternal cocaine taking may be drug-specific. Interestingly, the reduced sensitivity to cocaine previously observed in the male offspring of cocaine-taking sires dissipated in the grand-offspring. Both male and female grand-progeny of cocaine-exposed sires showed unaltered cocaine-induced behavioral sensitization and cocaine self-administration. Taken together, these findings indicate that paternal cocaine taking produces changes in multiple cocaine addiction-related behaviors in male progeny, which do not persist beyond the first generation of offspring. Moreover, the altered sensitivity to cocaine in first-generation male progeny of cocaine-sired male offspring was associated with epigenetic modifications in the nucleus accumbens, a nucleus that plays a critical role in cocaine-associated behavioral plasticity.
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Affiliation(s)
- Mathieu E Wimmer
- Department of Psychology and Neuroscience Program, College of Liberal Arts, Temple University, Philadelphia, Pennsylvania
| | - Fair M Vassoler
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, Grafton, Massachusetts
| | - Samantha L White
- Department of Psychiatry, Center for Neurobiology and Behavior, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Heath D Schmidt
- Department of Psychiatry, Center for Neurobiology and Behavior, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.,Department of Biobehavioral Health Sciences, School of Nursing, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Simone Sidoli
- Department of Biochemistry and Biophysics, Epigenetics Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Yumiao Han
- Department of Biochemistry and Biophysics, Epigenetics Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Benjamin A Garcia
- Department of Biochemistry and Biophysics, Epigenetics Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - R Christopher Pierce
- Department of Psychiatry, Center for Neurobiology and Behavior, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
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24
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Kivell BM, Paton KF, Kumar N, Morani AS, Culverhouse A, Shepherd A, Welsh SA, Biggerstaff A, Crowley RS, Prisinzano TE. Kappa Opioid Receptor Agonist Mesyl Sal B Attenuates Behavioral Sensitization to Cocaine with Fewer Aversive Side-Effects than Salvinorin A in Rodents. Molecules 2018; 23:E2602. [PMID: 30314288 DOI: 10.3390/molecules23102602] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 10/02/2018] [Accepted: 10/09/2018] [Indexed: 01/02/2023] Open
Abstract
The acute activation of kappa opioid receptors (KOPr) produces antinociceptive and anti-cocaine effects, however, their side-effects have limited further clinical development. Mesyl Sal B is a potent and selective KOPr analogue of Salvinorin A (Sal A), a psychoactive natural product isolated from the plant Salvia divinorum. We assessed the antinociceptive, anti-cocaine, and side-effects of Mesyl Sal B. The anti-cocaine effects are evaluated in cocaine-induced hyperactivity and behavioral sensitization to cocaine in male Sprague Dawley rats. Mesyl Sal B was assessed for anhedonia (conditioned taste aversion), aversion (conditioned place aversion), pro-depressive effects (forced swim test), anxiety (elevated plus maze) and learning and memory deficits (novel object recognition). In male B6.SJL mice, the antinociceptive effects were evaluated in warm-water (50 °C) tail withdrawal and intraplantar formaldehyde (2%) assays and the sedative effects measured with the rotarod performance task. Mesyl Sal B (0.3 mg/kg) attenuated cocaine-induced hyperactivity and behavioral sensitization to cocaine without modulating sucrose self-administration and without producing aversion, sedation, anxiety, or learning and memory impairment in rats. However, increased immobility was observed in the forced swim test indicating pro-depressive effects. Mesyl Sal B was not as potent as Sal A at reducing pain in the antinociceptive assays. In conclusion, Mesyl Sal B possesses anti-cocaine effects, is longer acting in vivo and has fewer side-effects when compared to Sal A, however, the antinociceptive effects are limited.
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25
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Budzynska B, Wnorowski A, Kaszubska K, Biala G, Kruk-Słomka M, Kurzepa J, Boguszewska-Czubara A. Acute MDMA and Nicotine Co-administration: Behavioral Effects and Oxidative Stress Processes in Mice. Front Behav Neurosci 2018; 12:149. [PMID: 30116179 PMCID: PMC6082960 DOI: 10.3389/fnbeh.2018.00149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 06/28/2018] [Indexed: 11/13/2022] Open
Abstract
3,4-Methylenedioxy-methylamphetamine (MDMA), a synthetic substance commonly known as ecstasy, is a worldwide recreational drug of abuse. As MDMA and nicotine activate the same neuronal pathways, we examined the influence of co-administration of nicotine (0.05 mg/kg) and MDMA (1 mg/kg) on cognitive processes, nicotine-induced behavioral sensitization and on processes linked with oxidative stress and α7 nicotinic acetylcholine receptors (nAChRs) expression in the brain of male Swiss mice. For behavioral study the passive avoidance (PA) test and locomotor sensitization paradigm were used. Also, the oxidative stress parameters as well as expression levels of α7 nAChRs in prefrontal cortex and hippocampus of mice treated with MDMA alone or in combination with nicotine were assessed. The results revealed that MDMA injections as well as co-administrations of MDMA and nicotine improved memory consolidation in male Swiss mice tested in PA task. Furthermore, one of the main findings of the present study is that MDMA increased locomotor activity in nicotine-sensitized mice. Our study showed for the first time strong behavioral and biochemical interactions between nicotine and MDMA. Both drugs are very often used in combination, especially by young people, thus these results may help explaining why psychoactive substances are being co-abused and why this polydrug administration is still a social problem.
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Affiliation(s)
- Barbara Budzynska
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Artur Wnorowski
- Department of Biopharmacy, Medical University of Lublin, Lublin, Poland
| | - Katarzyna Kaszubska
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Grazyna Biala
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Marta Kruk-Słomka
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Jacek Kurzepa
- Department of Medical Chemistry, Medical University of Lublin, Lublin, Poland
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26
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Vanaveski T, Narvik J, Innos J, Philips MA, Ottas A, Plaas M, Haring L, Zilmer M, Vasar E. Repeated Administration of D-Amphetamine Induces Distinct Alterations in Behavior and Metabolite Levels in 129Sv and Bl6 Mouse Strains. Front Neurosci 2018; 12:399. [PMID: 29946233 PMCID: PMC6005828 DOI: 10.3389/fnins.2018.00399] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 05/24/2018] [Indexed: 01/30/2023] Open
Abstract
The main goal of the study was to characterize the behavioral and metabolomic profiles of repeated administration (for 11 days) of d-amphetamine (AMPH, 3 mg/kg i. p.), indirect agonist of dopamine (DA), in widely used 129S6/SvEvTac (129Sv) and C57BL/6NTac (Bl6) mouse strains. Acute administration of AMPH (acute AMPH) induced significantly stronger motor stimulation in Bl6. However, repeated administration of AMPH (repeated AMPH) caused stronger motor sensitization in 129Sv compared acute AMPH. Body weight of 129Sv was reduced after repeated saline and AMPH, whereas no change occurred in Bl6. In the metabolomic study, acute AMPH induced an elevation of isoleucine and leucine, branched chain amino acids (BCAA), whereas the level of hexoses was reduced in Bl6. Both BCAAs and hexoses remained on level of acute AMPH after repeated AMPH in Bl6. Three biogenic amines [asymmetric dimethylarginine (ADMA), alpha-aminoadipic acid (alpha-AAA), kynurenine] were significantly reduced after repeated AMPH. Acute AMPH caused in 129Sv a significant reduction of valine, lysophosphatidylcholines (lysoPC a C16:0, lysoPC a C18:2, lysoPC a C20:4), phosphatidylcholine (PC) diacyls (PC aa C34:2, PC aa C36:2, PC aa C36:3, PC aa C36:4) and alkyl-acyls (PC ae C38:4, PC ae C40:4). However, repeated AMPH increased the levels of valine and isoleucine, long-chain acylcarnitines (C14, C14:1-OH, C16, C18:1), PC diacyls (PC aa C38:4, PC aa C38:6, PC aa C42:6), PC acyl-alkyls (PC ae C38:4, PC ae C40:4, PC ae C40:5, PC ae C40:6, PC ae C42:1, PC ae C42:3) and sphingolipids [SM(OH)C22:1, SM C24:0] compared to acute AMPH in 129Sv. Hexoses and kynurenine were reduced after repeated AMPH compared to saline in 129Sv. The established changes probably reflect a shift in energy metabolism toward lipid molecules in 129Sv because of reduced level of hexoses. Pooled data from both strains showed that the elevation of isoleucine and leucine was a prominent biomarker of AMPH-induced behavioral sensitization. Simultaneously a significant decline of hexoses, citrulline, ADMA, and kynurenine occurred. The reduced levels of kynurenine, ADMA, and citrulline likely reflect altered function of N-methyl-D-aspartate (NMDA) and NO systems caused by repeated AMPH. Altogether, 129Sv strain displays stronger sensitization toward AMPH and larger variance in metabolite levels than Bl6.
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Affiliation(s)
- Taavi Vanaveski
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Jane Narvik
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Jürgen Innos
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Mari-Anne Philips
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Aigar Ottas
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
- Department of Biochemistry, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Mario Plaas
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
- Psychiatry Clinic and Center of Excellence for Genomics and Translational Medicine, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Liina Haring
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
- Psychiatry Clinic, Tartu University Hospital, Tartu, Estonia
| | - Mihkel Zilmer
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
- Department of Biochemistry, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Eero Vasar
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Center of Excellence for Genomics and Translational Medicine, University of Tartu, Tartu, Estonia
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27
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Ryu IS, Kim J, Seo SY, Yang JH, Oh JH, Lee DK, Cho HW, Lee K, Yoon SS, Seo JW, Shim I, Choe ES. Repeated Administration of Cigarette Smoke Condensate Increases Glutamate Levels and Behavioral Sensitization. Front Behav Neurosci 2018; 12:47. [PMID: 29615877 PMCID: PMC5864865 DOI: 10.3389/fnbeh.2018.00047] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/28/2018] [Indexed: 01/09/2023] Open
Abstract
Nicotine, a nicotinic acetylcholine receptor agonist, produces the reinforcing effects of tobacco dependence by potentiating dopaminergic and glutamatergic neurotransmission. Non-nicotine alkaloids in tobacco also contribute to dependence by activating the cholinergic system. However, glutamatergic neurotransmission in the dorsal striatum associated with behavioral changes in response to cigarette smoking has not been investigated. In this study, the authors investigated alterations in glutamate levels in the rat dorsal striatum related to behavioral alterations after repeated administration of cigarette smoke condensate (CSC) using the real-time glutamate biosensing and an open-field behavioral assessment. Repeated administration of CSC including 0.4 mg nicotine (1.0 mL/kg/day, subcutaneous) for 14 days significantly increased extracellular glutamate concentrations more than repeated nicotine administration. In parallel with the hyperactivation of glutamate levels, repeated administration of CSC-evoked prolonged hypersensitization of psychomotor activity, including locomotor and rearing activities. These findings suggest that the CSC-induced psychomotor activities are closely associated with the elevation of glutamate concentrations in the rat dorsal striatum.
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Affiliation(s)
- In Soo Ryu
- Department of Biological Sciences, Pusan National University, Busan, South Korea.,Research Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon, South Korea
| | - Jieun Kim
- Department of Biological Sciences, Pusan National University, Busan, South Korea
| | - Su Yeon Seo
- Department of Biological Sciences, Pusan National University, Busan, South Korea.,Fundamental Research Division, Korea Institute of Oriental Medicine, Daejeon, South Korea
| | - Ju Hwan Yang
- Department of Biological Sciences, Pusan National University, Busan, South Korea
| | - Jeong Hwan Oh
- College of Fisheries Sciences, National Institute of Fisheries (NIFS), Busan, South Korea
| | - Dong Kun Lee
- Department of Physiology, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Hyun-Wook Cho
- Department of Biology, Sunchon National University, Sunchon, South Korea
| | - Kyuhong Lee
- Inhalation Toxicology Research Center, Korea Institute of Toxicology, Jeongeup, South Korea
| | - Seong Shoon Yoon
- Research Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon, South Korea
| | - Joung-Wook Seo
- Research Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon, South Korea
| | - Insop Shim
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Eun Sang Choe
- Department of Biological Sciences, Pusan National University, Busan, South Korea
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Solís O, Garcia-Montes JR, González-Granillo A, Xu M, Moratalla R. Dopamine D3 Receptor Modulates l-DOPA-Induced Dyskinesia by Targeting D1 Receptor-Mediated Striatal Signaling. Cereb Cortex 2018; 27:435-446. [PMID: 26483399 DOI: 10.1093/cercor/bhv231] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The dopamine D3 receptor (D3R) belongs to the dopamine D2-like receptor family and is principally located in the ventral striatum. However, previous studies reported D3R overexpression in the dorsal striatum following l-DOPA treatment in parkinsonian animals. This fact has drawn attention in the importance of D3R in l-DOPA-induced dyskinesia (LID). Here, we used D3R knockout mice to assess the role of D3R in LID and rotational sensitization in the hemiparkinsonian model. Mice lacking D3R presented a reduction in dyskinesia without interfering with the antiparkinsonian l-DOPA effect and were accompanied by a reduction in the l-DOPA-induced rotations. Interestingly, deleting D3R attenuated important molecular markers in the D1R-neurons such as FosB, extracellular signal-regulated kinase, and histone-3 (H3)-activation. Colocalization studies in D1R-tomato and D2R-green fluorescent protein BAC-transgenic mice indicated that l-DOPA-induced D3R overexpression principally occurs in D1R-containing neurons although it is also present in the D2R-neurons. Moreover, D3R pharmacological blockade with PG01037 reduced dyskinesia and the molecular markers expressed in D1R-neurons. In addition, this antagonist further reduced dyskinetic symptoms in D1R heterozygous mice, indicating a direct interaction between D1R and D3R. Together, our results demonstrate that D3R modulates the development of dyskinesia by targeting D1R-mediated intracellular signaling and suggest that decreasing D3R activity may help to ameliorate LID.
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Affiliation(s)
- Oscar Solís
- Instituto Cajal, Consejo Superior de Investigaciones Científicas, CSIC, Madrid 28002, Spain
- CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
| | - Jose Ruben Garcia-Montes
- Instituto Cajal, Consejo Superior de Investigaciones Científicas, CSIC, Madrid 28002, Spain
- CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
| | - Aldo González-Granillo
- Instituto Cajal, Consejo Superior de Investigaciones Científicas, CSIC, Madrid 28002, Spain
| | - Ming Xu
- Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL, USA
| | - Rosario Moratalla
- Instituto Cajal, Consejo Superior de Investigaciones Científicas, CSIC, Madrid 28002, Spain
- CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
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Kolik LG, Nadorova AV, Seredenin SB. Non-Competitive NMDA Receptor Antagonist Hemantane Reduces Ethanol Consumption in Long-Term Alcohol Experienced Rats. Bull Exp Biol Med 2017; 164:152-157. [PMID: 29177883 DOI: 10.1007/s10517-017-3946-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Indexed: 02/07/2023]
Abstract
Activity of hemantane, an amino adamantane derivative, exhibiting the properties of lowaffinity non-competitive NMDA receptor antagonist, was evaluated in experimental in vivo models of alcoholism. Hemantane had no effects on the formation and manifestation of behavioral sensitization to ethanol in DBA/2 mice. Under conditions of free choice between 10% ethanol and water, hemantane (20 mg/kg/day for 14 days, intraperitoneally) significantly reduced the daily ethanol intake in random-bred male rats with formed alcohol motivation (>4 g/kg of ethanol). During modelling of withdrawal syndrome, hemantane administered intraperitoneally in doses of 5-20 mg/kg dose-dependently attenuated alcohol-deprivation effect after acute withdrawal with no effects on protracted abstinence. It was found that hemantane suppressed alcohol drinking behavior in long-term ethanol experienced rats and attenuated alcohol-seeking behavior after acute withdrawal.
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Affiliation(s)
- L G Kolik
- V. V. Zakusov Research Institute of Pharmacology, Moscow, Russia.
| | - A V Nadorova
- V. V. Zakusov Research Institute of Pharmacology, Moscow, Russia
| | - S B Seredenin
- V. V. Zakusov Research Institute of Pharmacology, Moscow, Russia
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Abstract
Background Cocaine is the number one abused psychostimulant drug that reaches addiction criterion in the US. In animals, repeated administration of cocaine results in behavioral sensitization which is thought to represent adaptations in the mesolimbic dopamine neural circuitry, the reward pathway. Cocaine-induced behavioral sensitization is evident in rodents and quail when cocaine is administered intraperitoneally (IP). Objectives The purpose of the current study was to investigate dose-dependent and temporal effects of acute and chronic intramuscular (IM) administration of cocaine in male quail. Methods After habituation to the test chambers, male quail received an IM injection of saline, 3 or 10 mg/kg cocaine and were immediately placed in the chambers. Distance traveled (in meters) was recorded in 5 min time bins for 30 min. Testing was conducted once per day for ten days with each subject receiving the same treatment throughout the experiment. Other behaviors including pecking, preening, and feather fluffing were measured. Results Cocaine-induced behavioral sensitization and tolerance were evident at relatively low doses of IM cocaine. Dose-dependent effects were evident. IM cocaine also reduced feather fluffing, a behavior that typically occurs during hypothermia. Conclusions The findings replicated and extended previous research with pigeons and suggested that IM administration of cocaine may be a relatively potent route of administration. Potency of drugs of abuse may be related to the bioavailability of a drug and its addictive properties. Thus, studying drugs of abuse using an IM route of administration may be useful in drug addiction research.
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Affiliation(s)
- Beth Ann Rice
- Department of Psychology, University of Kentucky, Lexington, KY 40506
| | - Raza Tariq
- Department of Psychology, University of Kentucky, Lexington, KY 40506
| | - Chana K Akins
- Department of Psychology, University of Kentucky, Lexington, KY 40506
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31
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Aranda GP, Hinojos SJ, Sabandal PR, Evans PD, Han KA. Behavioral Sensitization to the Disinhibition Effect of Ethanol Requires the Dopamine/Ecdysone Receptor in Drosophila. Front Syst Neurosci 2017; 11:56. [PMID: 28824387 PMCID: PMC5539124 DOI: 10.3389/fnsys.2017.00056] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 07/17/2017] [Indexed: 12/15/2022] Open
Abstract
Male flies under the influence of ethanol display disinhibited courtship, which is augmented with repeated ethanol exposures. We have previously shown that dopamine is important for this type of ethanol-induced behavioral sensitization but the underlying mechanism is unknown. Here we report that DopEcR, an insect G-protein coupled receptor that binds to dopamine and steroid hormone ecdysone, is a major receptor mediating courtship sensitization. Upon daily ethanol administration, dumb and damb mutant males defective in D1 (dDA1/DopR1) and D5 (DAMB/DopR2) dopamine receptors, respectively, showed normal courtship sensitization; however, the DopEcR-deficient der males exhibited greatly diminished sensitization. der mutant males nevertheless developed normal tolerance to the sedative effect of ethanol, indicating a selective function of DopEcR in chronic ethanol-associated behavioral plasticity. DopEcR plays a physiological role in behavioral sensitization since courtship sensitization in der males was reinstated when DopEcR expression was induced during adulthood but not during development. When examined for the DopEcR’s functional site, the der mutant’s sensitization phenotype was fully rescued by restored DopEcR expression in the mushroom body (MB) αβ and γ neurons. Consistently, we observed DopEcR immunoreactivity in the MB calyx and lobes in the wild-type Canton-S brain, which was barely detectable in the der brain. Behavioral sensitization to the locomotor-stimulant effect has been serving as a model for ethanol abuse and addiction. This is the first report elucidating the mechanism underlying behavioral sensitization to another stimulant effect of ethanol.
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Affiliation(s)
- Gissel P Aranda
- Neuromodulation Disorders Cluster at Border Biomedical Research Center, Department of Biological Sciences, University of Texas at El PasoEl Paso, TX, United States
| | - Samantha J Hinojos
- Neuromodulation Disorders Cluster at Border Biomedical Research Center, Department of Biological Sciences, University of Texas at El PasoEl Paso, TX, United States
| | - Paul R Sabandal
- Neuromodulation Disorders Cluster at Border Biomedical Research Center, Department of Biological Sciences, University of Texas at El PasoEl Paso, TX, United States
| | - Peter D Evans
- The Inositide Laboratory, The Babraham InstituteCambridge, United Kingdom
| | - Kyung-An Han
- Neuromodulation Disorders Cluster at Border Biomedical Research Center, Department of Biological Sciences, University of Texas at El PasoEl Paso, TX, United States
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Carrara-Nascimento PF, Hoffmann LB, Contó MB, Marcourakis T, Camarini R. Ethanol Sensitization during Adolescence or Adulthood Induces Different Patterns of Ethanol Consumption without Affecting Ethanol Metabolism. Front Behav Neurosci 2017; 11:46. [PMID: 28386220 PMCID: PMC5362622 DOI: 10.3389/fnbeh.2017.00046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 02/28/2017] [Indexed: 11/13/2022] Open
Abstract
In previous study, we demonstrated that ethanol preexposure may increase ethanol consumption in both adolescent and adult mice, in a two-bottle choice model. We now questioned if ethanol exposure during adolescence results in changes of consumption pattern using a three-bottle choice procedure, considering drinking-in-the-dark and alcohol deprivation effect as strategies for ethanol consumption escalation. We also analyzed aldehyde dehydrogenase (ALDH) activity as a measurement of ethanol metabolism. Adolescent and adult Swiss mice were treated with saline (SAL) or 2.0 g/kg ethanol (EtOH) during 15 days (groups: Adolescent-SAL, Adolescent-EtOH, Adult-SAL and Adult-EtOH). Five days after the last injection, mice were exposed to the three-bottle choice protocol using sucrose fading procedure (4% + sucrose vs. 8%–15% ethanol + sucrose vs. water + sucrose) for 2 h during the dark phase. Sucrose was faded out from 8% to 0%. The protocol was composed of a 6-week acquisition period, followed by four withdrawals and reexposures. Both adolescent and adult mice exhibited ethanol behavioral sensitization, although the magnitude of sensitization in adolescents was lower than in adults. Adolescent-EtOH displayed an escalation of 4% ethanol consumption during acquisition that was not observed in Adult-EtOH. Moreover, Adult-EtOH consumed less 4% ethanol throughout all the experiment and less 15% ethanol in the last reexposure period than Adolescent-EtOH. ALDH activity varied with age, in which older mice showed higher ALDH than younger ones. Ethanol pretreatment or the pattern of consumption did not have influence on ALDH activity. Our data suggest that ethanol pretreatment during adolescence but not adulthood may influence the pattern of ethanol consumption toward an escalation in ethanol consumption at low dose, without exerting an impact on ALDH activity.
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Affiliation(s)
- Priscila F Carrara-Nascimento
- Laboratory of Neurochemistry and Behavioral Pharmacology, Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo São Paulo, Brazil
| | - Lucas B Hoffmann
- Laboratory of Neurochemistry and Behavioral Pharmacology, Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo São Paulo, Brazil
| | - Marcos B Contó
- Laboratory of Neurochemistry and Behavioral Pharmacology, Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo São Paulo, Brazil
| | - Tania Marcourakis
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, Universidade de São Paulo São Paulo, Brazil
| | - Rosana Camarini
- Laboratory of Neurochemistry and Behavioral Pharmacology, Department of Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo São Paulo, Brazil
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Sun J, Tian L, Cui R, Li X. Huperzine A inhibits immediate addictive behavior but not behavioral sensitization following repeated morphine administration in rats. Exp Ther Med 2017; 13:1584-1591. [PMID: 28413513 DOI: 10.3892/etm.2017.4097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 11/18/2016] [Indexed: 11/06/2022] Open
Abstract
Acetylcholinesterase inhibitors are regarded as promising therapeutic agents to treat addiction. The current study aimed to examine the effects of huperzine A, a cholinesterase inhibitor, on behavioral sensitization induced by repeated morphine administration and relapse induced by contextual conditioning. The present study also assessed whether the state-dependency hypothesis may explain the results. Adult rats were divided into four groups (n=8) and intraperitoneally injected with 0.2, 0.3 or 0.4 mg/kg huperzine A or saline (1 ml/kg, control), for 5 days. The effect of repeated huperzine A administration alone on locomotor activity was assessed. For the experiments that analyzed the development of morphine-induced sensitization, 40 rats were divided into five groups (n=8): Saline+Saline, Saline+Morphine, 0.2, 0.3 and 0.4 mg/kg huperzine A+Morphine. Following a withdrawal period of 7 days, all animals were administered saline or morphine, as appropriate. To test the state-dependency hypothesis, the rats in the Saline+Morphine group were injected with saline and morphine, while the other three groups were administered different doses of huperzine A and morphine. To examine the effect of huperzine A on the expression of morphine-induced sensitization, the rats in huperzine A+Morphine groups were injected with appropriate concentrations of huperzine A, and morphine. The current results indicated that the administration of huperzine A alone did not affect locomotor activity, while higher doses of huperzine A inhibited the addictive behavior induced by morphine at the development phase. Additionally, huperzine A administration during the expression phase of morphine sensitization did not inhibit the relapse induced by administration of saline. Furthermore, 0.4 mg/kg huperzine A inhibited the expression of morphine-induced behavioral sensitization. Therefore, the results of the current study do not support the state-dependency hypothesis.
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Affiliation(s)
- Jinling Sun
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, Capital Normal University, Beijing 100048, P.R. China
| | - Lin Tian
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, Capital Normal University, Beijing 100048, P.R. China
| | - Ruisi Cui
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, Capital Normal University, Beijing 100048, P.R. China
| | - Xinwang Li
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, Capital Normal University, Beijing 100048, P.R. China
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Pang G, Wu X, Tao X, Mao R, Liu X, Zhang YM, Li G, Stackman RW, Dong L, Zhang G. Blockade of Serotonin 5-HT 2A Receptors Suppresses Behavioral Sensitization and Naloxone-Precipitated Withdrawal Symptoms in Morphine-Treated Mice. Front Pharmacol 2016; 7:514. [PMID: 28082900 PMCID: PMC5183621 DOI: 10.3389/fphar.2016.00514] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/12/2016] [Indexed: 11/13/2022] Open
Abstract
The increasing prescription of opioids is fueling an epidemic of addiction and overdose deaths. Morphine is a highly addictive drug characterized by a high relapse rate - even after a long period of abstinence. Serotonin (5-HT) neurotransmission participates in the development of morphine dependence, as well as the expression of morphine withdrawal. In this study, we examined the effect of blockade of 5-HT2A receptors (5-HT2ARs) on morphine-induced behavioral sensitization and withdrawal in male mice. 5-HT2AR antagonist MDL 11,939 (0.5 mg/kg, i.p.) suppressed acute morphine (5.0 mg/kg, s.c.)-induced increase in locomotor activity. Mice received morphine (10 mg/kg, s.c.) twice a day for 3 days and then drug treatment was suspended for 5 days. On day 9, a challenge dose of morphine (10 mg/kg) was administered to induce the expression of behavioral sensitization. MDL 11,939 (0.5 mg/kg, i.p.) pretreatment suppressed the expression of morphine-induced behavioral sensitization. Another cohort of mice received increasing doses of morphine over a 7-day period to induce morphine-dependence. MDL 11,939 (0.5 mg/kg, i.p.) prevented naloxone-precipitated withdrawal in morphine-dependent mice on day 7. Moreover, chronic morphine treatment increased 5-HT2AR protein level and decreased the phosphorylation of extracellular signal-regulated kinases in the prefrontal cortex. Together, these results by the first time demonstrate that 5-HT2ARs modulate opioid dependence and blockade of 5-HT2AR may represent a novel strategy for the treatment of morphine use disorders. HIGHLIGHTS (i)Blockade of 5-HT2A receptors suppresses the expression of morphine-induced behavioral sensitization.(ii)Blockade of 5-HT2A receptors suppresses naloxone-precipitated withdrawal in morphine-treated mice.(iii)Chronic morphine exposure induces an increase in 5-HT2A receptor protein level and a decrease in ERK protein phosphorylation in prefrontal cortex.
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Affiliation(s)
- Gang Pang
- College of Basic Medical Sciences, Anhui Medical University Hefei, China
| | - Xian Wu
- College of Basic Medical Sciences, Anhui Medical University Hefei, China
| | - Xinrong Tao
- College of Medicine, Anhui University of Science and Technology Huainan, China
| | - Ruoying Mao
- College of Medicine, Anhui University of Science and Technology Huainan, China
| | - Xueke Liu
- College of Medicine, Anhui University of Science and Technology Huainan, China
| | - Yong-Mei Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, College of Anesthesiology, Xuzhou Medical University Xuzhou, China
| | - Guangwu Li
- College of Basic Medical Sciences, Anhui Medical University Hefei, China
| | - Robert W Stackman
- Department of Psychology, Jupiter Life Science Initiative, Florida Atlantic University, Jupiter FL, USA
| | - Liuyi Dong
- College of Basic Medical Sciences, Anhui Medical University Hefei, China
| | - Gongliang Zhang
- College of Basic Medical Sciences, Anhui Medical UniversityHefei, China; Department of Psychology, Jupiter Life Science Initiative, Florida Atlantic University, JupiterFL, USA
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Lafragette A, Bardo MT, Lardeux V, Solinas M, Thiriet N. Reduction of Cocaine-Induced Locomotor Effects by Enriched Environment Is Associated with Cell-Specific Accumulation of ΔFosB in Striatal and Cortical Subregions. Int J Neuropsychopharmacol 2016; 20:237-246. [PMID: 27815415 PMCID: PMC5408985 DOI: 10.1093/ijnp/pyw097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 11/02/2016] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Early exposure to enriched environments has been shown to decrease the locomotor effects induced by repeated injections of cocaine and modify basal and cocaine-induced total protein levels of the transcription factor ΔFosB in the whole striatum of mice. In this study, we aimed at characterizing whether the profile of ΔFosB accumulation induced by enriched environments and cocaine would be similar or different in terms of brain areas and cell type. METHODS We used mice expressing the eGFP protein in D1 receptor positive (D1R(+)) neurons to determine whether Δ FosB induced by enriched environment or cocaine injections (5×15 mg/kg) would occur in selective subpopulations of neurons in several subregions of the striatum and prefrontal cortex. RESULTS We found that: (1) exposure to enriched environment reduces cocaine-induced locomotor activation, confirming our previous findings; (2) exposure to enriched environment by itself increases the accumulation of Δ FosB mostly in D1R(-) cells in the shell part of the nucleus accumbens and dorsal striatum, whereas in the nucleus accumbens core, Δ FosB accumulates in both D1R(+) and D1R(-) neurons; (3) in standard environment mice, cocaine induces accumulation of Δ FosB selectively in D1R(+) cells in the nucleus accumbens, dorsal striatum, and infralimbic cortex; and (4) the effects of enriched environments and cocaine on accumulation of Δ FosB were reciprocally blocked by their combination. CONCLUSIONS Altogether, these results suggest that the enriched environment-induced reduction in behavioral effects of cocaine might result from 2 distinct effects on ΔFosB in striatal medium-sized spiny neurons belonging to the direct and indirect pathways.
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Affiliation(s)
- Audrey Lafragette
- INSERM, U-1084, Laboratory of Experimental and Clinical Neurosciences, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); University of Poitiers, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); Department of Psychology and Center for Drug Abuse Research Translation, University of Kentucky, Lexington, Kentucky (Dr Bardo).
| | - Michael T. Bardo
- INSERM, U-1084, Laboratory of Experimental and Clinical Neurosciences, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); University of Poitiers, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); Department of Psychology and Center for Drug Abuse Research Translation, University of Kentucky, Lexington, Kentucky (Dr Bardo).
| | - Virginie Lardeux
- INSERM, U-1084, Laboratory of Experimental and Clinical Neurosciences, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); University of Poitiers, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); Department of Psychology and Center for Drug Abuse Research Translation, University of Kentucky, Lexington, Kentucky (Dr Bardo).
| | - Marcello Solinas
- INSERM, U-1084, Laboratory of Experimental and Clinical Neurosciences, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); University of Poitiers, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); Department of Psychology and Center for Drug Abuse Research Translation, University of Kentucky, Lexington, Kentucky (Dr Bardo).
| | - Nathalie Thiriet
- INSERM, U-1084, Laboratory of Experimental and Clinical Neurosciences, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); University of Poitiers, Poitiers, France (Ms Lafragette, Ms Lardeux, Dr Solinas, and Dr Thiriet); Department of Psychology and Center for Drug Abuse Research Translation, University of Kentucky, Lexington, Kentucky (Dr Bardo).
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Carneiro de Oliveira PE, Leão RM, Bianchi PC, Marin MT, Planeta CDS, Cruz FC. Stress-Induced Locomotor Sensitization to Amphetamine in Adult, but not in Adolescent Rats, Is Associated with Increased Expression of ΔFosB in the Nucleus Accumbens. Front Behav Neurosci 2016; 10:173. [PMID: 27672362 PMCID: PMC5018519 DOI: 10.3389/fnbeh.2016.00173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 08/30/2016] [Indexed: 12/18/2022] Open
Abstract
While clinical and pre-clinical evidence suggests that adolescence is a risk period for the development of addiction, the underlying neural mechanisms are largely unknown. Stress during adolescence has a huge influence on drug addiction. However, little is known about the mechanisms related to the interaction among stress, adolescence and addiction. Studies point to ΔFosB as a possible target for this phenomenon. In the present study, adolescent and adult rats (postnatal day 28 and 60, respectively) were restrained for 2 h once a day for 7 days. Three days after their last exposure to stress, the animals were challenged with saline or amphetamine (1.0 mg/kg i.p.) and amphetamine-induced locomotion was recorded. Immediately after the behavioral tests, rats were decapitated and the nucleus accumbens was dissected to measure ΔFosB protein levels. We found that repeated restraint stress increased amphetamine-induced locomotion in both the adult and adolescent rats. Furthermore, in adult rats, stress-induced locomotor sensitization was associated with increased expression of ΔFosB in the nucleus accumbens. Our data suggest that ΔFosB may be involved in some of the neuronal plasticity changes associated with stress induced-cross sensitization with amphetamine in adult rats.
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Affiliation(s)
- Paulo E Carneiro de Oliveira
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESP Araraquara, Brazil
| | - Rodrigo M Leão
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESP Araraquara, Brazil
| | - Paula C Bianchi
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESPAraraquara, Brazil; Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, Faculdade de Odontologia de AraraquaraAraraquara, Brazil
| | - Marcelo T Marin
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESPAraraquara, Brazil; Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, Faculdade de Odontologia de AraraquaraAraraquara, Brazil
| | - Cleopatra da Silva Planeta
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESPAraraquara, Brazil; Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, Faculdade de Odontologia de AraraquaraAraraquara, Brazil
| | - Fábio C Cruz
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESP Araraquara, Brazil
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Abstract
Viewing recurrent depression as a potentially progressive illness may help transform treatment toward earlier, more consistent intervention and prevention. Evidence indicates that recurrent stressors, episodes of depression, and bouts of substance abuse can each show sensitization (increased reactivity upon repetition) and cross-sensitization to the others, and drive illness progression and treatment resistance. These long-lasting increases in pathological responsivity appear to be mediated by epigenetic mechanisms involving alterations in chemical marks placed on DNA and histories. These types of sensitization effects are amenable to clinical attempts at amelioration and prevention, and provide treatment targets and strategies to minimize the likelihood of illness progression to treatment resistance.
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Affiliation(s)
- Robert M Post
- George Washington University School of Medicine, Washington, DC, USA; Bipolar Collaborative Network, Bethesda, Maryland, USA
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Ferraro L, Tiozzo Fasiolo L, Beggiato S, Borelli AC, Pomierny-Chamiolo L, Frankowska M, Antonelli T, Tomasini MC, Fuxe K, Filip M. Neurotensin: A role in substance use disorder? J Psychopharmacol 2016; 30:112-27. [PMID: 26755548 DOI: 10.1177/0269881115622240] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Neurotensin is a tridecapeptide originally identified in extracts of bovine hypothalamus. This peptide has a close anatomical and functional relationship with the mesocorticolimbic and nigrostriatal dopamine system. Neural circuits containing neurotensin were originally proposed to play a role in the mechanism of action of antipsychotic agents. Additionally, neurotensin-containing pathways were demonstrated to mediate some of the rewarding and/or sensitizing properties of drugs of abuse.This review attempts to contribute to the understanding of the role of neurotensin and its receptors in drug abuse. In particular, we will summarize the potential relevance of neurotensin, its related compounds and neurotensin receptors in substance use disorders, with a focus on the preclinical research.
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Affiliation(s)
- Luca Ferraro
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Laura Tiozzo Fasiolo
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Sarah Beggiato
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Andrea C Borelli
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | | | - Malgorzata Frankowska
- Laboratory of Drug Addiction Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Tiziana Antonelli
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Maria C Tomasini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Kjell Fuxe
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Malgorzata Filip
- Laboratory of Drug Addiction Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
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Duka T, Dixon CI, Trick L, Crombag HS, King SL, Stephens DN. Motivational Effects of Methylphenidate are Associated with GABRA2 Variants Conferring Addiction Risk. Front Behav Neurosci 2015; 9:304. [PMID: 26635556 PMCID: PMC4649050 DOI: 10.3389/fnbeh.2015.00304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 10/29/2015] [Indexed: 12/02/2022] Open
Abstract
Background: Variations in the GABRA2 gene, encoding α2 subunits of GABAA receptors, have been associated with risk for addiction to several drugs, but the mechanisms by which variations in non-coding regions of GABRA2 increase risk for addictions are not understood. Mice with deletion of GABRA2 show deficits in the ability of psychostimulants to facilitate responding for conditioned reinforcers, offering a potential explanation. Methods: We report human and mouse studies investigating a potential endophenotype underlying this association. Healthy human volunteers carrying either cocaine-addiction “risk” or “protective” GABRA2 single nucleotide polymorphism (SNPs) were tested for their subjective responses to methylphenidate, and methylphenidate’s ability to facilitate conditioned reinforcement (CRf) for visual stimuli (CS+) associated with monetary reward. In parallel, methylphenidate’s ability to facilitate responding for a visual CRf was studied in wildtype and α2 knockout (α2−/−) mice. Results: Methylphenidate increased the number of CS+ presentations obtained by human subjects carrying protective, but not risk SNPs. In mice, methylphenidate increased responding for a CS+ in wildtype, but not α2−/− mice. Human subjects carrying protective SNPs felt stimulated, aroused and restless following methylphenidate, while individuals carrying risk SNPs did not. Conclusion: Human risk SNP carriers were insensitive to methylphenidate’s effects on mood or in facilitating CRf. That mice with the gene deletion were also insensitive to methylphenidate’s ability to increase responding for CRf, suggests a potential mechanism whereby low α2-subunit levels increase risk for addictions. Circuits employing GABAA-α2 subunit-containing receptors may protect against risk for addictions.
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Affiliation(s)
- Theodora Duka
- School of Psychology, University of Sussex, Falmer Brighton, UK
| | - Claire I Dixon
- School of Psychology, University of Sussex, Falmer Brighton, UK
| | - Leanne Trick
- School of Psychology, University of Sussex, Falmer Brighton, UK
| | - Hans S Crombag
- School of Psychology, University of Sussex, Falmer Brighton, UK
| | - Sarah L King
- School of Psychology, University of Sussex, Falmer Brighton, UK
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Perrine SA, Ghoddoussi F, Desai K, Kohler RJ, Eapen AT, Lisieski MJ, Angoa-Perez M, Kuhn DM, Bosse KE, Conti AC, Bissig D, Berkowitz BA. Cocaine-induced locomotor sensitization in rats correlates with nucleus accumbens activity on manganese-enhanced MRI. NMR Biomed 2015; 28:1480-1488. [PMID: 26411897 PMCID: PMC4618766 DOI: 10.1002/nbm.3409] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 08/18/2015] [Accepted: 08/21/2015] [Indexed: 06/05/2023]
Abstract
A long-standing goal of substance abuse research has been to link drug-induced behavioral outcomes with the activity of specific brain regions to understand the neurobiology of addiction behaviors and to search for drug-able targets. Here, we tested the hypothesis that cocaine produces locomotor (behavioral) sensitization that correlates with increased calcium channel-mediated neuroactivity in brain regions linked with drug addiction, such as the nucleus accumbens (NAC), anterior striatum (AST) and hippocampus, as measured using manganese-enhanced MRI (MEMRI). Rats were treated with cocaine for 5 days, followed by a 2-day drug-free period. The following day, locomotor sensitization was quantified as a metric of cocaine-induced neuroplasticity in the presence of manganese. Immediately following behavioral testing, rats were examined for changes in calcium channel-mediated neuronal activity in the NAC, AST, hippocampus and temporalis muscle, which was associated with behavioral sensitization using MEMRI. Cocaine significantly increased locomotor activity and produced behavioral sensitization compared with saline treatment of control rats. A significant increase in MEMRI signal intensity was determined in the NAC, but not AST or hippocampus, of cocaine-treated rats compared with saline-treated control rats. Cocaine did not increase signal intensity in the temporalis muscle. Notably, in support of our hypothesis, behavior was significantly and positively correlated with MEMRI signal intensity in the NAC. As neuronal uptake of manganese is regulated by calcium channels, these results indicate that MEMRI is a powerful research tool to study neuronal activity in freely behaving animals and to guide new calcium channel-based therapies for the treatment of cocaine abuse and dependence.
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Affiliation(s)
- Shane A. Perrine
- Department of Psychiatry and Behavioral Neurosciences, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Farhad Ghoddoussi
- Department of Anesthesiology, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Kirtan Desai
- Department of Psychiatry and Behavioral Neurosciences, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Robert J. Kohler
- Department of Psychiatry and Behavioral Neurosciences, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Ajay T. Eapen
- Department of Neurosurgery, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
- Research Services, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Michael J. Lisieski
- Department of Psychiatry and Behavioral Neurosciences, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Mariana Angoa-Perez
- Department of Psychiatry and Behavioral Neurosciences, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
- Research Services, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Donald M. Kuhn
- Department of Psychiatry and Behavioral Neurosciences, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
- Research Services, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Kelly E. Bosse
- Department of Neurosurgery, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
- Research Services, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Alana C. Conti
- Department of Neurosurgery, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
- Research Services, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - David Bissig
- Department of Anatomy and Cell Biology, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
| | - Bruce A. Berkowitz
- Department of Anatomy and Cell Biology, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
- Department of Ophthalmology, Wayne State University School of Medicine, John D. Dingell Veterans Affairs Medical Center, Detroit, MI
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41
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Kai N, Nishizawa K, Tsutsui Y, Ueda S, Kobayashi K. Differential roles of dopamine D1 and D2 receptor-containing neurons of the nucleus accumbens shell in behavioral sensitization. J Neurochem 2015; 135:1232-41. [PMID: 26442961 DOI: 10.1111/jnc.13380] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 09/02/2015] [Accepted: 09/15/2015] [Indexed: 12/20/2022]
Abstract
The nucleus accumbens (Nac) mediates the reinforcing and motor stimulating properties of psychostimulants. It receives dopaminergic afferents from the ventral midbrain and is divided into two distinct subregions: shell and core. Each of these contains two subtypes of medium spiny neurons, which express either dopamine D1 (D1R) or D2 (D2R) receptors. However, functional dissociation between the two subtypes in psychostimulant response remains to be elucidated. We performed selective ablation of each subtype in the Nac shell in mice, using immunotoxin-mediated cell targeting, and examined the behavioral sensitization evoked by repeated administration of methamphetamine. The D1R cell-ablated mice exhibited delayed induction of sensitized locomotion compared to control mice, whereas the D2R cell-ablated mice showed a mildly enhanced rate of induction of sensitization. In vivo microdialysis revealed a marked blockade of the increase in extracellular dopamine in the Nac of the D1R cell-ablated animals in response to methamphetamine, indicating that the observed delay in behavioral sensitization in these mice involves an impairment in accumbal dopamine release. Our results reveal differential roles of D1R- and D2R-containing accumbal shell neurons in the development of behavioral sensitization to psychostimulants. Behavioral sensitization, enhanced motility by repetitive psychostimulant administration, is a model of drug addiction. Here, we show that the nucleus accumbens (Nac) shell neurons containing dopamine D1 receptor (D1R) or D2 receptor (D2R) play distinct roles in behavioral sensitization triggered by methamphetamine, and that D1R-containing neurons enhance the induction of behavioral sensitization at the early phase, whereas D2R-containing neurons act to suppress the rate of development of the behavior.
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Affiliation(s)
- Nobuyuki Kai
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan.,Department of Histology & Neurobiology, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Kayo Nishizawa
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yuji Tsutsui
- Faculty of Symbiotic Systems Science, Fukushima University, Fukushima, Japan
| | - Shuichi Ueda
- Department of Histology & Neurobiology, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Kazuto Kobayashi
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
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Abstract
Prolonged morphine treatment in neonatal pediatric populations is associated with a high incidence of opioid tolerance and dependence. Despite the clinical relevance of this problem, our knowledge of long-term consequences is sparse. The main objective of this study was to investigate whether prolonged morphine administration in a neonatal rat is associated with long-term behavioral changes in adulthood. Newborn animals received either morphine (10 mg/kg) or equal volume of saline subcutaneously twice daily for the first 2 weeks of life. Morphine-treated animals underwent 10 days of morphine weaning to reduce the potential for observable physical signs of withdrawal. Animals were subjected to nonstressful testing (locomotor activity recording and a novel-object recognition test) at a young age (Postnatal Days [PDs] 27-31) or later in adulthood (PDs 55-56), as well as stressful testing (calibrated forceps test, hot plate test, and forced swim test) only in adulthood. Analysis revealed that prolonged neonatal morphine exposure resulted in decreased thermal but not mechanical threshold. Importantly, no differences were found for total locomotor activity (proxy of drug reward/reinforcement behavior), individual forced swim test behaviors (proxy of affective processing), or novel-object recognition test. Performance on the novel-object recognition test was compromised in the morphine-treated group at the young age, but the effect disappeared in adulthood. These novel results provide insight into the long-term consequences of opioid treatment during an early developmental period and suggest long-term neuroplastic differences in sensory processing related to thermal stimuli.
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Affiliation(s)
- Michael M. Craig
- Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA, USA
| | - Dusica Bajic
- Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA, USA
- Department of Anaesthesia, Harvard Medical School, 25 Shattuck St., Boston, MA, USA
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43
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Collins GT, Chen Y, Tschumi C, Rush EL, Mensah A, Koek W, France CP. Effects of consuming a diet high in fat and/or sugar on the locomotor effects of acute and repeated cocaine in male and female C57BL/6J mice. Exp Clin Psychopharmacol 2015; 23:228-37. [PMID: 26237320 PMCID: PMC4523901 DOI: 10.1037/pha0000019] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Drug abuse and obesity are serious public health problems. Dopamine plays a central role in mediating the reinforcing effects of drugs and food. Prolonged use of drugs is known to alter the function and/or sensitivity of many neurotransmitter systems, including dopamine; however, the impact of consuming foods high in fat and/or sugar is less clear. These studies characterized the locomotor effects of acute and repeated cocaine in male and female C57BL/6J mice consuming 1 of 4 diets: (a) standard chow + water; (b) standard chow + 10% sucrose solution; (c) high-fat chow + water; or (d) high-fat chow + 10% sucrose solution. The acute locomotor effects of cocaine (3.2-32.0 mg/kg) were evaluated 4 weeks after initiating dietary conditions; the effects of repeated cocaine administration were evaluated after 5, 6, 7, and 12 weeks. During acute tests, mice consuming a diet high in fat and/or sucrose exhibited greater locomotor responses to cocaine than mice consuming standard chow and water, regardless of sex. Although diet-induced enhancements persisted across repeated cocaine testing, locomotor sensitization developed more rapidly in females drinking sucrose (and consuming either standard or high-fat chow) than in females consuming standard chow and water. In addition to providing evidence that consuming a diet high in fat and/or sugar enhances abuse-related effects of cocaine in ways that might increase vulnerability to abuse cocaine, these studies identified a potentially important sex-related difference in the interaction between nutrition and cocaine effects, with the impacts of sucrose consumption being greater in females than in males.
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Affiliation(s)
- Gregory T Collins
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
| | - Yu Chen
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
| | - Chris Tschumi
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
| | - Elise L Rush
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
| | - Ayele Mensah
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
| | - Wouter Koek
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
| | - Charles P France
- Department of Pharmacology, University of Texas Health Science Center at San Antonio
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Zhu J, Midde NM, Gomez AM, Sun WL, Harrod SB. Intra-ventral tegmental area HIV-1 Tat1-86 attenuates nicotine-mediated locomotor sensitization and alters mesocorticolimbic ERK and CREB signaling in rats. Front Microbiol 2015; 6:540. [PMID: 26150803 PMCID: PMC4473058 DOI: 10.3389/fmicb.2015.00540] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 05/15/2015] [Indexed: 12/24/2022] Open
Abstract
Cigarette smoking prevalence in the HIV-positive individuals is profoundly higher than that in the HIV-negative individuals. We have demonstrated that HIV-1 transgenic rats exhibit attenuated nicotine-mediated locomotor activity, altered cAMP response element binding protein (CREB) and extracellular regulated kinase (ERK1/2) signaling in the mesocorticolimbic regions. This study investigated the role of HIV-1 transactivator of transcription (Tat) protein in the alterations of nicotine-mediated behavior and the signaling pathway observed in the HIV-1 transgenic rats. Rats received bilateral microinjection of recombinant Tat1-86 (25 μg/side) or vehicle directed at ventral tegmental area (VTA) followed by locomotor testing in response to 13 daily intravenous injections of nicotine (0.05 mg/kg, freebase, once/day) or saline. Further, we examined the phosphorylated levels of CREB (pCREB) and ERK1/2 (pERK1/2) in the prefrontal cortex (PFC), nucleus accumbens (NAc) and VTA. Tat diminished baseline activity in saline control rats, and attenuated nicotine-induced behavioral sensitization. Following repeated saline injection, the basal levels of pERK1 in the NAc and VTA and pERK2 in VTA were lower in the vehicle control group, relative to the Tat group. After repeated nicotine injection, pERK1 in NAc and VTA and pERK2 in VTA were increased in the vehicle group, but not in the Tat group. Moreover, repeated nicotine injections decreased pCREB in the PFC and VTA in the Tat group but not in the vehicle group. Thus, these findings indicate that the direct injection of Tat at the VTA may mediate CREB and ERK activity in response to nicotine-induced locomotor activity.
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Affiliation(s)
- Jun Zhu
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina , Columbia, SC, USA
| | - Narasimha M Midde
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina , Columbia, SC, USA
| | - Adrian M Gomez
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina , Columbia, SC, USA
| | - Wei-Lun Sun
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina , Columbia, SC, USA
| | - Steven B Harrod
- Department of Psychology, University of South Carolina , Columbia, SC, USA
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45
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Tobón KE, Catuzzi JE, Cote SR, Sonaike A, Kuzhikandathil EV. Post-transcriptional regulation of dopamine D1 receptor expression in caudate-putamen of cocaine-sensitized mice. Eur J Neurosci 2015; 42:1849-57. [PMID: 25900179 DOI: 10.1111/ejn.12933] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 04/14/2015] [Accepted: 04/16/2015] [Indexed: 11/30/2022]
Abstract
The dopamine D1 receptor is centrally involved in mediating the effects of cocaine and is essential for cocaine-induced locomotor sensitization. Changes in D1 receptor expression have been reported in various models of cocaine addiction; however, the mechanisms that mediate these changes in D1 receptor expression are not well understood. Using preadolescent drd1a-EGFP mice and a binge cocaine treatment protocol we demonstrate that the D1 receptor is post-transcriptionally regulated in the caudate-putamen of cocaine-sensitized animal. While cocaine-sensitized mice express high levels of steady-state D1 receptor mRNA, the expression of D1 receptor protein is not elevated. We determined that the post-transcriptional regulation of D1 receptor mRNA is rapidly attenuated and D1 receptor protein levels increase within 30 min when the sensitized mice are challenged with cocaine. The rapid increase in D1 receptor protein levels requires de novo protein synthesis and correlates with the cocaine-induced hyperlocomotor activity in the cocaine-sensitized mice. The increase in D1 receptor protein levels in the caudate-putamen inversely correlated with the levels of microRNA 142-3p and 382, both of which regulate D1 receptor protein expression. The levels of these two microRNAs decreased significantly within 5 min of cocaine challenge in sensitized mice. The results provide novel insights into the previously unknown rapid kinetics of D1 receptor protein expression which occurs in a time scale that is comparable to the expression of immediate early genes. Furthermore, the results suggest a potential novel role for inherently labile microRNAs in regulating the rapid expression of D1 receptor protein in cocaine-sensitized animals.
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Affiliation(s)
- Krishna E Tobón
- Department of Pharmacology and Physiology, Rutgers-New Jersey Medical School, 185 South Orange Avenue, MSB, I-647, Newark, NJ, 07103, USA
| | - Jennifer E Catuzzi
- Department of Pharmacology and Physiology, Rutgers-New Jersey Medical School, 185 South Orange Avenue, MSB, I-647, Newark, NJ, 07103, USA
| | - Samantha R Cote
- Department of Pharmacology and Physiology, Rutgers-New Jersey Medical School, 185 South Orange Avenue, MSB, I-647, Newark, NJ, 07103, USA
| | - Adenike Sonaike
- Department of Pharmacology and Physiology, Rutgers-New Jersey Medical School, 185 South Orange Avenue, MSB, I-647, Newark, NJ, 07103, USA
| | - Eldo V Kuzhikandathil
- Department of Pharmacology and Physiology, Rutgers-New Jersey Medical School, 185 South Orange Avenue, MSB, I-647, Newark, NJ, 07103, USA
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Abstract
Methylphenidate (MPD) is a readily prescribed drug for the treatment of attention deficit hyperactivity disorder (ADHD) and moreover is used illicitly by youths for its cognitive-enhancing effects and recreation. MPD exposure in rodents elicits increased locomotor activity. Repetitive MPD exposure leads to further augmentation of their locomotor activity. This behavioral response is referred to as behavioral sensitization. Behavioral sensitization is used as an experimental marker for a drug’s ability to elicit dependence. There is evidence that dopamine (DA) is a key player in the acute and chronic MPD effect; however, the role of DA in the effects elicited by MPD is still debated. The objective of this study was to investigate the role of D1 and/or D2 DA receptors in the acute and chronic effect of MPD on locomotor activity. The study lasted for 12 consecutive days. Seven groups of male Sprague Dawley® rats were used. A single D1 or D2 antagonist was given before and after acute and chronic MPD administration. Single injection of D1 DA antagonist was able to significantly attenuate the locomotor activity when given prior to the initial MPD exposure and after repetitive MPD exposure, while the D2 DA antagonist partially attenuated the locomotor activity only when given before the second MPD exposure. The results show the role, at least in part, of the D1 DA receptor in the mechanism of behavioral sensitization, whereas the D2 DA receptor only partially modulates the response to acute and chronic MPD.
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Affiliation(s)
- Catherine M Claussen
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center Medical School at Houston, Houston, TX, USA
| | - Lindsey J Witte
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center Medical School at Houston, Houston, TX, USA
| | - Nachum Dafny
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center Medical School at Houston, Houston, TX, USA
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Mohd-Yusof A, Gonzalez AE, Veliz A, McDougall SA. Role of the D1 receptor for the dopamine agonist-induced one-trial behavioral sensitization of preweanling rats. Psychopharmacology (Berl) 2014; 231:4167-77. [PMID: 24740494 DOI: 10.1007/s00213-014-3561-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
Abstract
RATIONALE The neural mechanisms mediating the ontogeny of behavioral sensitization are poorly understood. OBJECTIVE The purpose of the present study was to determine the role of the D1 receptor for the induction of dopamine agonist-induced behavioral sensitization during the preweanling period. METHODS In the first experiment, the early ontogeny of R-propylnorapomorphine (NPA)-induced behavioral sensitization was examined by pretreating male and female rats with saline or NPA (0.5, 1, or 2 mg/kg, intraperitoneally (IP)) before placement in activity chambers on postnatal day (PD) 12, 16, 20, or 24. One day later, rats were tested with lower doses of NPA and the occurrence of locomotor sensitization was determined. In subsequent experiments, rats were injected with saline or the D1 receptor antagonist SCH23390 (0.1, 0.5, 1, or 5 mg/kg, IP) 0, 15, 30, or 60 min before cocaine, methamphetamine (METH), or NPA pretreatment. The next day, rats were tested with the same dopamine agonist again and sensitized responding was assessed. RESULTS NPA produced one-trial behavioral sensitization at all ages tested. In preweanling rats, SCH23390, regardless of dose, was ineffective at preventing the induction of cocaine-, METH-, or NPA-induced one-trial behavioral sensitization. CONCLUSIONS The present results are in partial contrast to adult rodent studies, in which SCH23390 blocks the induction of METH- and apomorphine-induced behavioral sensitization, but not cocaine sensitization. When these findings are considered together, it appears that D1 receptor stimulation is not necessary for the induction of behavioral sensitization during the preweanling period, although D1 receptors may play a more important role in adulthood.
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48
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Pildervasser JVN, Abrahao KP, Souza-Formigoni MLO. Distinct behavioral phenotypes in ethanol-induced place preference are associated with different extinction and reinstatement but not behavioral sensitization responses. Front Behav Neurosci 2014; 8:267. [PMID: 25152719 PMCID: PMC4126182 DOI: 10.3389/fnbeh.2014.00267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 07/20/2014] [Indexed: 01/12/2023] Open
Abstract
Conditioned place preference (CPP) is a model to study the role of drug conditioning properties. In outbred strains, individual variability may affect some behavioral measures. However, there are few studies focusing on understanding how different phenotypes of ethanol conditioned behavior may influence its extinction, reinstatement, and behavioral adaptation measures. We used male Swiss Webster mice to study different phenotypes related to ethanol conditioning strength, reinstatement and behavioral sensitization. Mice went through a CPP procedure with ethanol (2.2 g/kg, i.p.). After that, one group of mice was submitted to repeated extinction sessions, while another group remained in their home cages without any drug treatment. Mice went through environmental and ethanol priming (1.0 g/kg, i.p.) reinstatement tests. Ethanol priming test reinstated the conditioned behavior only in the animals kept in the home-cage during the abstinence period. Besides, the ethanol conditioned behavior strength was positively correlated with the time required to be extinguished. In the second set of experiments, some mice went through a CPP protocol followed by behavioral sensitization (five i.p. administrations of ethanol 2.2 g/kg or saline per week, for 3 weeks) and another group of mice went through sensitization followed by CPP. No positive correlation was observed between ethanol CPP strength and the intensity of behavioral sensitization. Considering that different phenotypes observed in CPP strength predicted the variability in other CPP measures, we developed a statistics-based method to classify mice according to CPP strength to be used in the evaluation of ethanol conditioning properties.
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Affiliation(s)
- João V N Pildervasser
- Unidade de Dependência de Drogas, Departament of Psicobiologia, Universidade Federal de Sao Paulo Sao Paulo, Brazil
| | - Karina P Abrahao
- Laboratory of Integrative Neuroscience, National Institute of Alcohol Abuse and Alcoholism, National Institutes of Health Rockville, MD, USA
| | - Maria L O Souza-Formigoni
- Unidade de Dependência de Drogas, Departament of Psicobiologia, Universidade Federal de Sao Paulo Sao Paulo, Brazil
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49
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Chen YW, Kao HY, Min MY, Lai WS. A sex- and region-specific role of Akt1 in the modulation of methamphetamine-induced hyperlocomotion and striatal neuronal activity: implications in schizophrenia and methamphetamine-induced psychosis. Schizophr Bull 2014; 40:388-98. [PMID: 23474853 PMCID: PMC3932084 DOI: 10.1093/schbul/sbt031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AKT1 (also known as protein kinase B, α), a serine/threonine kinase of AKT family, has been implicated in both schizophrenia and methamphetamine (Meth) use disorders. AKT1 or its protein also has epistatic effects on the regulation of dopamine-dependent behaviors or drug effects, especially in the striatum. The aim of this study is to investigate the sex-specific role of Akt1 in the regulation of Meth-induced behavioral sensitization and the alterations of striatal neurons using Akt1(-/-) mice and wild-type littermates as a model. A series of 4 Experiments were conducted. Meth-induced hyperlocomotion and Meth-related alterations of brain activity were measured. The neural properties of striatal medium spiny neurons (MSNs) were also characterized. Further, 17β-estradiol was applied to examine its protective effect in Meth-sensitized male mice. Our findings indicate that (1) Akt1(-/-) males were less sensitive to Meth-induced hyperlocomotion during Meth challenge compared with wild-type controls and Akt1(-/-) females, (2) further sex differences were revealed by coinjection of Meth with raclopride but not SCH23390 in Meth-sensitized Akt1(-/-) males, (3) Meth-induced alterations of striatal activity were confirmed in Akt1(-/-) males using microPET scan with (18)F-flurodeoxyglucose, (4) Akt1 deficiency had a significant impact on the electrophysiological and neuromorphological properties of striatal MSNs in male mice, and (5) subchronic injections of 17β-estradiol prevented the reduction of Meth-induced hyperactivity in Meth-sensitized Akt1(-/-) male mice. This study highlights a sex- and region-specific effect of Akt1 in the regulation of dopamine-dependent behaviors and implies the importance of AKT1 in the modulation of sex differences in Meth sensitivity and schizophrenia.
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Affiliation(s)
- Yi-Wen Chen
- *To whom correspondence should be addressed; 1 Roosevelt Road, Sec. 4, Taipei 10617, Taiwan; tel: 886-2-3366-3112, fax: 886-2-3362-9909, e-mail:
| | - Hui-Yun Kao
- Institute of Zoology, National Taiwan University, Taipei, Taiwan
| | - Ming-Yuan Min
- Institute of Zoology, National Taiwan University, Taipei, Taiwan;,Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan;,Neurobiology and Cognitive Science Center, National Taiwan University, Taipei, Taiwan
| | - Wen-Sung Lai
- Department of Psychology, National Taiwan University, Taipei, Taiwan;,Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan;,Neurobiology and Cognitive Science Center, National Taiwan University, Taipei, Taiwan,*To whom correspondence should be addressed; 1 Roosevelt Road, Sec. 4, Taipei 10617, Taiwan; tel: 886-2-3366-3112, fax: 886-2-3362-9909, e-mail:
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Soares-Simi SL, Pastrello DM, Ferreira ZS, Yonamine M, Marcourakis T, Scavone C, Camarini R. Changes in CREB activation in the prefrontal cortex and hippocampus blunt ethanol-induced behavioral sensitization in adolescent mice. Front Integr Neurosci 2013; 7:94. [PMID: 24379765 PMCID: PMC3861743 DOI: 10.3389/fnint.2013.00094] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 11/25/2013] [Indexed: 12/20/2022] Open
Abstract
Drug dependence is a major health problem in adults and has been recognized as a significant problem in adolescents. We previously demonstrated that repeated treatment with a behaviorally sensitizing dose of ethanol in adult mice induced tolerance or no sensitization in adolescents and that repeated ethanol-treated adolescents expressed lower Fos and Egr-1 expression than adult mice in the prefrontal cortex (PFC). In the present work, we investigated the effects of acute and repeated ethanol administration on cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB) DNA-binding activity using the electrophoretic mobility shift assay (EMSA) and the phosphorylated CREB (pCREB)/CREB ratio using immunoblotting in both the PFC and hippocampus in adolescent and adult mice. Adult mice exhibited typical locomotor sensitization after 15 days of daily treatment with 2.0 g/kg ethanol, whereas adolescent mice did not exhibit sensitization. Overall, adolescent mice displayed lower CREB binding activity in the PFC compared with adult mice, whereas opposite effects were observed in the hippocampus. The present results indicate that ethanol exposure induces significant and differential neuroadaptive changes in CREB DNA-binding activity in the PFC and hippocampus in adolescent mice compared with adult mice. These differential molecular changes may contribute to the blunted ethanol-induced behavioral sensitization observed in adolescent mice.
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Affiliation(s)
- Sabrina L Soares-Simi
- Department of Pharmacology, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
| | - Daniel M Pastrello
- Department of Pharmacology, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
| | - Zulma S Ferreira
- Department of Physiology, Instituto de Biociências, Universidade de São Paulo São Paulo, Brazil
| | - Mauricio Yonamine
- Department of Clinical and Toxicological Analysis, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo São Paulo, Brazil
| | - Tania Marcourakis
- Department of Clinical and Toxicological Analysis, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo São Paulo, Brazil
| | - Cristoforo Scavone
- Department of Pharmacology, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
| | - Rosana Camarini
- Department of Pharmacology, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
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