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Zvozilova A, Bukatova S, Koprdova R, Mach M. Evaluation of New Approaches to Depression Treatment Using an Animal Model of Pharmacoresistant Depression. Int J Mol Sci 2024; 25:5265. [PMID: 38791304 PMCID: PMC11121040 DOI: 10.3390/ijms25105265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
Depression is emerging as the predominant psychiatric disorder globally. Despite the wide availability of antidepressants, up to 30% of patients exhibit poor response to treatment, falling into the category of treatment-resistant depression (TRD). This underscores the need for the exploration of novel therapeutic options. Our work aims to study the effect of chronic administration of the pyridoindole derivative SMe1EC2M3, a triple reuptake inhibitor, and the combination of zoletil and venlafaxine under conditions of stress induced by a 4-week chronic mild stress (CMS) procedure in Wistar-Kyoto male rats as an animal model of TRD. Therefore, we investigated the possible effect of the selected compounds in four experimental groups, i.e., stress + vehicle, stress + venlafaxine, stress + zoletil + venlafaxine and stress + SMe1EC2M3. The following variables were assessed: anhedonia in sucrose preference test (SPT), spontaneous locomotion and exploration in open field test (OF), anxiety-like behavior in elevated plus maze test (EPM), motivation and depressive-like behavior in forced swim test (FST) and nociception in tail flick test. We also evaluated cognition, particularly recognition memory, in the novel object recognition test (NOR). Sucrose preference was significantly increased in the SMe1EC2M3 group (p < 0.05) in comparison with the venlafaxine animals. In the OF, we observed a significantly higher number of entries into both the central and peripheral zones in the venlafaxine (p < 0.05 central zone; p ≤ 0.05 periphery zone) and SMe1EC2M3 (p < 0.05 central zone; p < 0.05 periphery zone) groups compared to the venlafaxine + zoletil group. SMe1EC2M3 was able to significantly increase the time of climbing in FST (p < 0.05) in comparison with the venlafaxine and control groups. The NOR test revealed a significantly higher discrimination ratio in the SMe1EC2M3 group (p < 0.05) compared to the control and venlafaxine groups. Analyses of the tail flick test showed a significant increase in reaction time to painful stimuli in the SMe1EC2M3 group (p < 0.05) in comparison to both the control and venlafaxine groups. Our findings suggest that SMe1EC2M3 has the potential to ameliorate some behavioral changes associated with TRD, and the venlafaxine + zoletil combination treatment was not a promising treatment alternative in the animal model of TRD.
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Affiliation(s)
- Alexandra Zvozilova
- Centre of Experimental Medicine of the Slovak Academy of Sciences, Institute of Experimental Pharmacology and Toxicology, 841 04 Bratislava, Slovakia; (A.Z.); (S.B.); (R.K.)
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Stanislava Bukatova
- Centre of Experimental Medicine of the Slovak Academy of Sciences, Institute of Experimental Pharmacology and Toxicology, 841 04 Bratislava, Slovakia; (A.Z.); (S.B.); (R.K.)
| | - Romana Koprdova
- Centre of Experimental Medicine of the Slovak Academy of Sciences, Institute of Experimental Pharmacology and Toxicology, 841 04 Bratislava, Slovakia; (A.Z.); (S.B.); (R.K.)
| | - Mojmir Mach
- Centre of Experimental Medicine of the Slovak Academy of Sciences, Institute of Experimental Pharmacology and Toxicology, 841 04 Bratislava, Slovakia; (A.Z.); (S.B.); (R.K.)
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Kim RE, Mabunga DF, Kim HJ, Han SH, Kim HY, Shin CY, Kwon KJ. Novel Therapeutics for Treating Sleep Disorders: New Perspectives on Maydis stigma. Int J Mol Sci 2022; 23:ijms232314612. [PMID: 36498940 PMCID: PMC9740493 DOI: 10.3390/ijms232314612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/26/2022] [Accepted: 11/05/2022] [Indexed: 11/24/2022] Open
Abstract
Sleep is a restorative period that plays a crucial role in the physiological functioning of the body, including that of the immune system, memory processing, and cognition. Sleep disturbances can be caused by various physical, mental, and social problems. Recently, there has been growing interest in sleep. Maydis stigma (MS, corn silk) is a female maize flower that is traditionally used as a medicinal plant to treat many diseases, including hypertension, edema, and diabetes. It is also used as a functional food in tea and other supplements. β-Sitosterol (BS) is a phytosterol and a natural micronutrient in higher plants, and it has a similar structure to cholesterol. It is a major component of MS and has anti-inflammatory, antidepressive, and sedative effects. However, the potential effects of MS on sleep regulation remain unclear. Here, we investigated the effects of MS on sleep in mice. The effects of MS on sleep induction were determined using pentobarbital-induced sleep and caffeine-induced sleep disruption mouse models. MS extracts decreased sleep latency and increased sleep duration in both the pentobarbital-induced sleep induction and caffeine-induced sleep disruption models compared to the positive control, valerian root extract. The butanol fraction of MS extracts decreased sleep latency time and increased sleep duration. In addition, β-sitosterol enhances sleep latency and sleep duration. Both MS extract and β-sitosterol increased alpha activity in the EEG analysis. We measured the mRNA expression of melatonin receptors 1 and 2 (MT1/2) using qRT-PCR. The mRNA expression of melatonin receptors 1 and 2 was increased by MS extract and β-sitosterol treatment in rat primary cultured neurons and the brain. In addition, MS extract increased the expression of clock genes including per1/2, cry1/2, and Bmal1 in the brain. MS extract and β-sitosterol increased the phosphorylation of ERK1/2 and αCaMKII. Our results demonstrate for the first time that MS has a sleep-promoting effect via melatonin receptor expression, which may provide new scientific evidence for its use as a potential therapeutic agent for the treatment and prevention of sleep disturbance.
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Affiliation(s)
- Ryeong-Eun Kim
- Department of Neuroscience, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Darine Froy Mabunga
- Department of Neuroscience, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hee Jin Kim
- Department of Pharmacy, Uimyung Research Institute for Neuroscience, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Seol-Heui Han
- Department of Neurology, Konkuk Hospital Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Republic of Korea
| | - Hahn Young Kim
- Department of Neurology, Konkuk Hospital Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Republic of Korea
| | - Chan Young Shin
- Department of Pharmacology, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Kyoung Ja Kwon
- Department of Neuroscience, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
- Department of Neurology, Konkuk Hospital Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Republic of Korea
- Correspondence: ; Tel.: +82-2-454-5630; Fax: +82-2030-7899
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Li F, Du H, Wu B, Wei J, Qiao Y, Lai M, Zhou W, Shen H, Wang Y, Xu P, Di B. 2-Fluorodeschloroketamine has similar abuse potential as ketamine. Addict Biol 2022; 27:e13171. [PMID: 35470563 DOI: 10.1111/adb.13171] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 03/12/2022] [Accepted: 03/15/2022] [Indexed: 12/13/2022]
Abstract
2-Fluorodeschloroketamine (2-FDCK) as a substitute for ketamine has emerged among drug abusers in recent years. However, 2-FDCK has not been controlled or regulated in many countries, which may be partly related to the lack of evidence on its abuse potential. In this study, we evaluated the abuse potential of 2-FDCK via the tests of the conditioned place preference (CPP), locomotor sensitization, drug self-administration and drug discrimination using ketamine as a reference. 2-FDCK induced significant CPP at a minimum dose of 3 mg/kg in mice, an effect comparable with that of ketamine (3 mg/kg). Acute injections of 2-FDCK or ketamine at 30 mg/kg enhanced locomotor activity. Repeated treatments with this dose of 2-FDCK and ketamine induced locomotor sensitization after withdrawal. 2-FDCK readily induced self-administration with 0.5 mg/kg/infusion, the same dose for ketamine, and induced the highest seeking response at 1 mg/kg. Drug discrimination test showed that 2-FDCK dose-dependently substitute for ketamine with comparable ED50 to ketamine in substitution testing. Taken together, these results strongly suggested that 2-FDCK has an abuse potential comparable with ketamine.
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Affiliation(s)
- Feng Li
- School of Pharmacy China Pharmaceutical University Nanjing China
- Office of China National Narcotics Control Commission China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control Beijing China
| | - Han Du
- Zhejiang Provincial Key Laboratory of Addiction, Ningbo Kangning Hospital, School of Medicine Ningbo University Ningbo China
| | - Bo Wu
- School of Pharmacy China Pharmaceutical University Nanjing China
- Drug Laboratory of Narcotic Control Division Nanjing Public Security Bureau Nanjing China
| | - Jiayun Wei
- School of Pharmacy China Pharmaceutical University Nanjing China
- Office of China National Narcotics Control Commission China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control Beijing China
| | - Yanling Qiao
- School of Pharmacy China Pharmaceutical University Nanjing China
- Office of China National Narcotics Control Commission China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control Beijing China
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center Ministry of Public Security Beijing China
| | - Miaojun Lai
- Zhejiang Provincial Key Laboratory of Addiction, Ningbo Kangning Hospital, School of Medicine Ningbo University Ningbo China
| | - Wenhua Zhou
- Zhejiang Provincial Key Laboratory of Addiction, Ningbo Kangning Hospital, School of Medicine Ningbo University Ningbo China
| | - Haowei Shen
- Faculty of Physiology and Pharmacology, School of Medicine Ningbo University Ningbo China
| | - Youmei Wang
- School of Pharmacy China Pharmaceutical University Nanjing China
- Office of China National Narcotics Control Commission China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control Beijing China
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center Ministry of Public Security Beijing China
| | - Peng Xu
- School of Pharmacy China Pharmaceutical University Nanjing China
- Office of China National Narcotics Control Commission China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control Beijing China
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center Ministry of Public Security Beijing China
| | - Bin Di
- School of Pharmacy China Pharmaceutical University Nanjing China
- Office of China National Narcotics Control Commission China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control Beijing China
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Rodriguez-Sanchez R, Barnaby E, Améndola L, Hea SY, Smith B, Webster J, Zobel G. Voluntary Oral Ingestion of a Sedative Prior to Euthanasia with CO 2: Behavioural Responses of Mice. Animals (Basel) 2021; 11:ani11102879. [PMID: 34679900 PMCID: PMC8533016 DOI: 10.3390/ani11102879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/24/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022] Open
Abstract
Laboratory mice are commonly euthanised with carbon dioxide (CO2); however, there is ample evidence that this gas is aversive. Previous work suggests that sedation achieved via injection with benzodiazepines prior to CO2 administration could reduce aversive behaviours during euthanasia. We explored the potential of using a voluntarily ingested sedative (tiletamine-zolazepam, Zoletil®) prior to euthanasia. Male and female C57BL/6 mice were allocated into one of the five experimental groups, which differed in the dose of Zoletil: 0, 10, 20, 40, 80 or 100 mg/kg. A dose of 20 mg/kg was found to achieve mild sedation prior to euthanasia; mice which received this dose numerically reared and walked on the cage lid less, and showed ataxia, immobility and recumbency for longer than mice that received a lower dose. During euthanasia, mice that received 20 mg/kg showed fewer aversive responses to CO2. Doses of 40 to 100 mg/kg were associated with signs of moderate to severe sedation, but resulted in an incomplete intake of the sedative, which made the interpretation of the aversiveness to CO2 difficult. Voluntary oral administration of a sedative is an effective, affordable, and easy way to minimize the stress of mice to euthanasia with CO2.
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Affiliation(s)
- Raquel Rodriguez-Sanchez
- Animal Behaviour and Welfare Team, AgResearch Ltd., Ruakura Research Centre, 10 Bisley Road, Private Bag 3123, 3214 Hamilton, New Zealand;
| | - Elyssa Barnaby
- Animal Ethics Office, AgResearch Ltd., Ruakura Research Centre, 10 Bisley Road, Private Bag 3123, 3214 Hamilton, New Zealand; (E.B.); (J.W.)
| | - Lucia Améndola
- Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE C1A 4P3, Canada;
| | - Shen-Yan Hea
- Bioinformatics and Statistics, AgResearch Ltd., Grasslands Research Centre, Tennent Drive, Fitzherbert, 4410 Palmerston North, New Zealand;
| | - Bobby Smith
- Small Animal Colony, AgResearch Ltd., Ruakura Research Centre, 10 Bisley Road, Private Bag 3123, 3214 Hamilton, New Zealand;
| | - James Webster
- Animal Ethics Office, AgResearch Ltd., Ruakura Research Centre, 10 Bisley Road, Private Bag 3123, 3214 Hamilton, New Zealand; (E.B.); (J.W.)
| | - Gosia Zobel
- Animal Behaviour and Welfare Team, AgResearch Ltd., Ruakura Research Centre, 10 Bisley Road, Private Bag 3123, 3214 Hamilton, New Zealand;
- Correspondence: ; Tel.: +64-78385911
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5
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Youn DH, Kim JM, Hong YK, Park SI, Lee JM, Kim YH, Park CW, Kang MS. Assessment of the abuse potential of methamnetamine in rodents: a behavioral pharmacology study. Psychopharmacology (Berl) 2021; 238:2155-2165. [PMID: 33811503 DOI: 10.1007/s00213-021-05840-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
RATIONALE Methamnetamine (MNA; PAL-1046) is a new psychoactive substance that acts as a full biogenic amine transporter (BAT) substrate. BAT substrates promote neurotransmitter release from the nerve terminal and can be abused as stimulants. However, scientific information on the abuse potential of methamnetamine is lacking. OBJECTIVE We evaluated the abuse liability of methamnetamine. METHODS The effective dose range of methamnetamine was determined using a climbing behavior test. The rewarding effect and reinforcing effect of the test compound were evaluated in mice by conditioned place preference (CPP) testing and self-administration (SA) testing at the selected doses. Dopamine level changes were analyzed using synaptosomes and in vivo microdialysis to investigate the effects of methamnetamine on the central nervous system. Drug discrimination experiments were used to examine the potential similarity of the interoceptive effects of methamnetamine and cocaine. RESULTS A significant response was observed in the climbing behavior test with 10 and 40 mg/kg intraperitoneally administered methamnetamine. In the CPP test, mice intraperitoneally administered methamnetamine (10 and 20 mg/kg) showed a significant preference for the drug-paired compartment. In the SA test, mice that intravenously received 1 mg/kg/infusion showed significant active-lever responses. Dopamine was significantly increased in synaptosomes and in in vivo microdialysis tests. Furthermore, methamnetamine showed cross-generalization with cocaine in a dose-dependent manner. CONCLUSIONS Methamnetamine exhibits interceptive stimulus properties similar to those of cocaine and induces rewarding and reinforcing effects, suggesting its dependence liability potential.
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Affiliation(s)
- Dong-Hyun Youn
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Jin Mook Kim
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Young-Ki Hong
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Seo-In Park
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Jin-Moo Lee
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Young-Hoon Kim
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Chang Won Park
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea
| | - Mi Sun Kang
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi, 28159, Korea.
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Park D, Mabunga DFN, Adil KJ, Ryu O, Valencia S, Kim R, Kim HJ, Cheong JH, Kwon KJ, Kim HY, Han SH, Jeon SJ, Shin CY. Synergistic efficacy and diminished adverse effect profile of composite treatment of several ADHD medications. Neuropharmacology 2021; 187:108494. [PMID: 33587920 DOI: 10.1016/j.neuropharm.2021.108494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 01/05/2021] [Accepted: 02/07/2021] [Indexed: 11/26/2022]
Abstract
Although attention-deficit/hyperactivity disorder (ADHD) is widely studied, problems regarding the adverse effect risks and non-responder problems still need to be addressed. Combination pharmacotherapy using standard dose regimens of existing medication is currently being practiced mainly to augment the therapeutic efficacy of each drug. The idea of combining different pharmacotherapies with different molecular targets to alleviate the symptoms of ADHD and its comorbidities requires scientific evidence, necessitating the investigation of their therapeutic efficacy and the mechanisms underlying the professed synergistic effects. Here, we injected male ICR mice with MK-801 to induce ADHD behavioral condition. We then modeled a "combined drug" using sub-optimal doses of methylphenidate, atomoxetine, and fluoxetine and investigated the combined treatment effects in MK-801-treated mice. No sub-optimal dose monotherapy alleviated ADHD behavioral condition in MK-801-treated mice. However, treatment with the combined drug attenuated the impaired behavior of MK-801-treated animals. Growth impediment, sleep disturbances, or risk of substance abuse were not observed in mice treated subchronically with the combined drugs. Finally, we observed that the combined ADHD drug rescued alterations in p-AKT and p-ERK1/2 levels in the prefrontal cortex and hippocampus, respectively, of MK-801-treated mice. Our results provide experimental evidence of a possible new pharmacotherapy option in ameliorating the ADHD behavioral condition without the expected adverse effects. The detailed mechanism of action underlying the synergistic therapeutic efficacy and reduced adverse reaction by combinatorial drug treatment should be investigated further in future studies.
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Affiliation(s)
- Donghyun Park
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Darine Froy N Mabunga
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Keremkleroo Jym Adil
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Onjeon Ryu
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Schley Valencia
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Ryeongeun Kim
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Kyung Ja Kwon
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hahn Young Kim
- Department of Neurology, Konkuk University Medical Center, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University School of Medicine, Seoul, 05029, Republic of Korea
| | - Seol-Heui Han
- Department of Neurology, Konkuk University Medical Center, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University School of Medicine, Seoul, 05029, Republic of Korea
| | - Se Jin Jeon
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea; TriNeuro Inc., 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.
| | - Chan Young Shin
- School of Medicine and Center for Neuroscience Research, Konkuk University, Seoul, 05029, Republic of Korea; TriNeuro Inc., 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.
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Abiero A, Perez Custodio RJ, Botanas CJ, Ortiz DM, Sayson LV, Kim M, Lee HJ, Yoon S, Lee YS, Cheong JH, Kim HJ. 1-Phenylcyclohexan-1-amine hydrochloride (PCA HCl) alters mesolimbic dopamine system accompanied by neuroplastic changes: A neuropsychopharmacological evaluation in rodents. Neurochem Int 2021; 144:104962. [PMID: 33460722 DOI: 10.1016/j.neuint.2021.104962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/23/2020] [Accepted: 01/11/2021] [Indexed: 12/21/2022]
Abstract
The recreational use of N-methyl-D-aspartate (NMDA) antagonist phencyclidine (PCP) and ketamine have grown rapidly due to their psychotomimetic properties. These compounds induce both non-fatal and fatal adverse effects and despite the enhanced regulation, they are continuously synthesized and are being sold in the illegal drug market, including 1-phenylcyclohexan-1-amine hydrochloride (PCA). Therefore, we evaluated its abuse potential through the conditioned-place preference (CPP), self-administration, and locomotor sensitization paradigms. Pretreatment with SCH 2 3390 and haloperidol was also performed during a CPP test. We used ELISA to measure dopamine (DA) levels and western blotting to determine effects on the DA-related proteins as well as on phosphorylated CREB, deltaFosB, and brain-derived neurotrophic factor (BDNF) in the ventral tegmental area (VTA) and nucleus accumbens (NAc). Finally, we examined the effects on brain wave activity using electroencephalography (EEG). PCA induced CPP in mice and was self-administered by rats, suggesting that PCA has rewarding and reinforcing properties. PCA increased locomotor of mice on the first treatment and challenge days. SCH 23390 and haloperidol blocked the CPP. PCA altered the DA, tyrosine hydroxylase, dopamine D1 and D2 receptors as well as p-CREB and deltaFosB. Also, PCA altered the delta and gamma waves in the brain, which were then normalized by SCH 2 3390 and haloperidol. The present findings indicate that PCA may induce abuse potential through the dopaminergic system and probably accompanied with alterations in brain wave activity which is similar to that of other psychotomimetic NMDA antagonists. We advocate thorough monitoring of PCP analogs as they pose potential harm to public health.
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Affiliation(s)
- Arvie Abiero
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea; Centre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology Sydney, New South Wales, 2007, Australia
| | - Raly James Perez Custodio
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Darlene Mae Ortiz
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Leandro Val Sayson
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Mikyung Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea; Department of Chemistry & Life Science, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Hyun Jun Lee
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Seolmin Yoon
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Yong Sup Lee
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea; School of Pharmacy, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea.
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea.
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Abiero A, Botanas CJ, Custodio RJ, Sayson LV, Kim M, Lee HJ, Kim HJ, Lee KW, Jeong Y, Seo JW, Ryu IS, Lee YS, Cheong JH. 4-MeO-PCP and 3-MeO-PCMo, new dissociative drugs, produce rewarding and reinforcing effects through activation of mesolimbic dopamine pathway and alteration of accumbal CREB, deltaFosB, and BDNF levels. Psychopharmacology (Berl) 2020; 237:757-772. [PMID: 31828394 DOI: 10.1007/s00213-019-05412-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 11/21/2019] [Indexed: 12/27/2022]
Abstract
RATIONALE A high number of synthetic dissociative drugs continue to be available through online stores, leading to their misuse. Recent inclusions in this category are 4-MeO-PCP and 3-MeO-PCMo, analogs of phencyclidine. Although the dissociative effects of these drugs and their recreational use have been reported, no studies have investigated their abuse potential. OBJECTIVES To examine their rewarding and reinforcing effects and explore the mechanistic correlations. METHODS We used conditioned place preference (CPP), self-administration, and locomotor sensitization tests to assess the rewarding and reinforcing effects of the drugs. We explored their mechanism of action by pretreating dopamine receptor (DR) D1 antagonist SCH23390 and DRD2 antagonist haloperidol during CPP test and investigated the effects of 4-MeO-PCP and 3-MeO-PCMo on dopamine-related proteins in the ventral tegmental area and nucleus accumbens. We also measured the levels of dopamine, phosphorylated cyclic-AMP response element-binding (p-CREB) protein, deltaFosB, and brain-derived neurotrophic factor (BDNF) in the nucleus accumbens. Additionally, we examined the effects of both drugs on brain wave activity using electroencephalography. RESULTS While both 4-MeO-PCP and 3-MeO-PCMo induced CPP and self-administration, only 4-MeO-PCP elicited locomotor sensitization. SCH23390 and haloperidol inhibited the acquisition of drug CPP. 4-MeO-PCP and 3-MeO-PCMo altered the levels of tyrosine hydroxylase, DRD1, DRD2, and dopamine, as well as that of p-CREB, deltaFosB, and BDNF. All drugs increased the delta and gamma wave activity, whereas pretreatment with SCH23390 and haloperidol inhibited it. CONCLUSION Our results indicate that 4-MeO-PCP and 3-MeO-PCMo induce rewarding and reinforcing effects that are probably mediated by the mesolimbic dopamine system, suggesting an abuse liability in humans.
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Affiliation(s)
- Arvie Abiero
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Raly James Custodio
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Leandro Val Sayson
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Mikyung Kim
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Hyun Jun Lee
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea
| | - Kun Won Lee
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Youngdo Jeong
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Joung-Wook Seo
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea
| | - In Soo Ryu
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon, 305-343, Republic of Korea
| | - Yong Sup Lee
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea.
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, College of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul, 01795, Republic of Korea. .,School of Pharmacy, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea.
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Abiero A, Ryu IS, Botanas CJ, Custodio RJP, Sayson LV, Kim M, Lee HJ, Kim HJ, Seo JW, Cho MC, Lee KW, Yoo SY, Jang CG, Lee YS, Cheong JH. Four Novel Synthetic Tryptamine Analogs Induce Head-Twitch Responses and Increase 5-HTR2a in the Prefrontal Cortex in Mice. Biomol Ther (Seoul) 2019; 28:83-91. [PMID: 31230432 PMCID: PMC6939696 DOI: 10.4062/biomolther.2019.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/08/2019] [Accepted: 05/23/2019] [Indexed: 12/22/2022] Open
Abstract
Tryptamines are monoamine alkaloids with hallucinogenic properties and are widely abused worldwide. To hasten the regulations of novel substances and predict their abuse potential, we designed and synthesized four novel synthetic tryptamine analogs: Pyrrolidino tryptamine hydrochloride (PYT HCl), Piperidino tryptamine hydrochloride (PIT HCl), N,N-dibutyl tryptamine hydrochloride (DBT HCl), and 2-Methyl tryptamine hydrochloride (2-MT HCl). Then, we evaluated their rewarding and reinforcing effects using the conditioned place preference (CPP) and self-administration (SA) paradigms. We conducted an open field test (OFT) to determine the effects of the novel compounds on locomotor activity. A head-twitch response (HTR) was also performed to characterize their hallucinogenic properties. Lastly, we examined the effects of the compounds on 5-HTR1a and 5-HTR2a in the prefrontal cortex using a quantitative real-time polymerase chain reaction (qRT-PCR) assay. None of the compounds induced CPP in mice or initiated SA in rats. PYT HCl and PIT HCl reduced the locomotor activity and elevated the 5-HTR1a mRNA levels in mice. Acute and repeated treatment with the novel tryptamines elicited HTR in mice. Furthermore, a drug challenge involving a 7-day abstinence from drug use produced higher HTR than acute and repeated treatments. Both the acute treatment and drug challenge increased the 5-HTR2a mRNA levels. Ketanserin blocked the induced HTR. Taken together, the findings suggest that PYT HCl, PIT HCl, DBT HCl, and 2-MT HCl produce hallucinogenic effects via 5-HTR2a stimulation, but may have low abuse potential.
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Affiliation(s)
- Arvie Abiero
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - In Soo Ryu
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Raly James Perez Custodio
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Leandro Val Sayson
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Mikyung Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Hyun Jun Lee
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Joung-Wook Seo
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Min Chang Cho
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kun Won Lee
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung Yeun Yoo
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Choon-Gon Jang
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yong Sup Lee
- Medicinal Chemistry Laboratory, Department of Pharmacy & Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
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Abiero A, Botanas CJ, Sayson LV, Custodio RJ, de la Peña JB, Kim M, Lee HJ, Seo JW, Ryu IS, Chang CM, Yang JS, Lee YS, Jang CG, Kim HJ, Cheong JH. 5-Methoxy-α-methyltryptamine (5-MeO-AMT), a tryptamine derivative, induces head-twitch responses in mice through the activation of serotonin receptor 2a in the prefrontal cortex. Behav Brain Res 2019; 359:828-835. [DOI: 10.1016/j.bbr.2018.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/10/2018] [Accepted: 07/24/2018] [Indexed: 12/20/2022]
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11
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Cha HJ, Jeon SY, Jang HJ, Shin J, Kim YH, Suh SK. Rewarding and reinforcing effects of 4-chloro-2,5-dimethoxyamphetamine and AH-7921 in rodents. Neurosci Lett 2018; 676:66-70. [PMID: 29626650 DOI: 10.1016/j.neulet.2018.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/30/2018] [Accepted: 04/03/2018] [Indexed: 10/17/2022]
Abstract
New psychoactive substances (NPSs), i.e., newly designed substances with chemical residues that are slightly different from those of known psychoactive substances, have been emerging since the late 2000s, and social problems related to the use of these substances are increasing globally. Two such NPSs are 4-chloro-2,5-dimethoxyamphetamine (DOC), a psychedelic substance that is structurally related to amphetamine, and AH-7921, an opioid analgesic that is used for recreational purposes and has a potency similar to that of morphine. Currently, scientific evidence for the dependence liability or toxicity of NPSs is lacking. Therefore, in this study, we performed animal behavioral tests to evaluate the dependence liability of DOC and AH-7921. The rewarding and reinforcing effects of DOC and AH-7921 were evaluated using the conditioned place preference (CPP) paradigm in mice and the self-administration (SA) procedure in rats. Both DOC and AH-7921 increased the preference for the drug-paired compartment in the CPP test at a dose of 0.3 mg/kg and increased the number of responses to the active lever in the SA test at 0.01 mg/(kg·infusion). Collectively, the data suggest that DOC and AH-7921 may have both rewarding and reinforcing effects. Further studies are needed to confirm the reinforcing effects in broader dose ranges with various schedules.
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Affiliation(s)
- Hye Jin Cha
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi 28159, Republic of Korea.
| | - Seo Young Jeon
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi 28159, Republic of Korea
| | - Hwa Jin Jang
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi 28159, Republic of Korea
| | - Jisoon Shin
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi 28159, Republic of Korea
| | - Young-Hoon Kim
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi 28159, Republic of Korea
| | - Soo Kyung Suh
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osong Saengmyeong 2-ro, Heungdeok-gu, Chungju-shi 28159, Republic of Korea
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12
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Botanas CJ, Yoon SS, de la Peña JB, Dela Peña IJ, Kim M, Woo T, Seo JW, Jang CG, Park KT, Lee YH, Lee YS, Kim HJ, Cheong JH. The Abuse Potential of α-Piperidinopropiophenone (PIPP) and α-Piperidinopentiothiophenone (PIVT), Two New Synthetic Cathinones with Piperidine Ring Substituent. Biomol Ther (Seoul) 2017; 25:122-129. [PMID: 28173643 PMCID: PMC5340536 DOI: 10.4062/biomolther.2016.241] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 11/10/2016] [Accepted: 11/24/2016] [Indexed: 11/05/2022] Open
Abstract
A diversity of synthetic cathinones has flooded the recreational drug marketplace worldwide. This variety is often a response to legal control actions for one specific compound (e.g. methcathinone) which has resulted in the emergence of closely related replacement. Based on recent trends, the nitrogen atom is one of the sites in the cathinone molecule being explored by designer type modifications. In this study, we designed and synthesized two new synthetic cathinones, (1) α-piperidinopropiophenone (PIPP) and (2) α-piperidinopentiothiophenone (PIVT), which have piperidine ring substituent on their nitrogen atom. Thereafter, we evaluated whether these two compounds have an abuse potential through the conditioned place preference (CPP) in mice and self-administration (SA) in rats. We also investigated whether the substances can induce locomotor sensitization in mice following 7 days daily injection and challenge. qRT-PCR analyses were conducted to determine their effects on dopamine-related genes in the striatum. PIPP (10 and 30 mg/kg) induced CPP in mice, but not PIVT. However, both synthetic cathinones were not self-administered by the rats and did not induce locomotor sensitization in mice. qRT-PCR analyses showed that PIPP, but not PIVT, reduced dopamine transporter gene expression in the striatum. These data indicate that PIPP, but not PIVT, has rewarding effects, which may be attributed to its ability to affect dopamine transporter gene expression. Altogether, this study suggests that PIPP may have abuse potential. Careful monitoring of this type of cathinone and related drugs are advocated.
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Affiliation(s)
- Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Seong Shoon Yoon
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - June Bryan de la Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Irene Joy Dela Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Mikyung Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Taeseon Woo
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Joung-Wook Seo
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Choon-Gon Jang
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyung-Tae Park
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Young Hun Lee
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yong Sup Lee
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
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13
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Botanas CJ, Yoon SS, de la Peña JB, Dela Peña IJ, Kim M, Woo T, Seo JW, Jang CG, Park KT, Lee YH, Lee YS, Kim HJ, Cheong JH. The abuse potential of two novel synthetic cathinones with modification on the alpha-carbon position, 2-cyclohexyl-2-(methylamino)-1-phenylethanone (MACHP) and 2-(methylamino)-1-phenyloctan-1-one (MAOP), and their effects on dopaminergic activity. Pharmacol Biochem Behav 2017; 153:160-167. [PMID: 28063946 DOI: 10.1016/j.pbb.2016.12.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/21/2016] [Accepted: 12/31/2016] [Indexed: 10/20/2022]
Abstract
The recreational use of synthetic cathinones has dramatically increased in recent years, which is partly due to easy accessibility and ability of synthetic cathinones to exert rewarding effects similar to cocaine and methamphetamine. Many synthetic cathinones have already been scheduled in several countries; however, novel and diverse synthetic cathinones are emerging at an unprecedented rate, often outpacing regulatory processes. Recently, designer modifications of the basic cathinone molecule are usually performed on the alpha-carbon position. In this study, we designed and synthesized two novel synthetic cathinones with substituents on alpha-carbon position, [1] 2-cyclohexyl-2-(methylamino)-1-phenylethanone (MACHP), and [2] 2-(methylamino)-1-phenyloctan-1-one (MAOP). Then, we evaluated their rewarding and reinforcing effects through the conditioned place preference (CPP) in mice and self-administration (SA) test in rats. Locomotor activity was also assessed in mice during daily MACHP or MAOP treatment for 7days and drug challenge. qRT-PCR analyses were conducted to determine their effects on dopamine-related genes in the striatum. MACHP and MAOP produced CPP at 10 and 30mg/kg. In the SA test, MACHP (1mg/kg/infusion), but not MAOP, was self-administered. Both MACHP and MAOP induced locomotor sensitization in mice. qRT-PCR analyses showed that MACHP and MAOP reduced dopamine transporter gene expression in the striatum. These data indicate that MACHP and MAOP may have rewarding properties, which might be attributed to their ability to affect the dopaminergic activity. These findings may be useful in predicting the abuse potential and hasten the regulation of future cathinone entities with similar modifications.
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Affiliation(s)
- Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Seong Shoon Yoon
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 305-343, Republic of Korea
| | - June Bryan de la Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Irene Joy Dela Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Mikyung Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Taeseon Woo
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Joung-Wook Seo
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 305-343, Republic of Korea
| | - Choon-Gon Jang
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Kyung-Tae Park
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Young Hun Lee
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yong Sup Lee
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea.
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea.
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Kolesnikova TO, Khatsko SL, Shevyrin VA, Morzherin YY, Kalueff AV. Effects of a non-competitive N-methyl-d-aspartate (NMDA) antagonist, tiletamine, in adult zebrafish. Neurotoxicol Teratol 2017; 59:62-67. [DOI: 10.1016/j.ntt.2016.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 11/25/2016] [Accepted: 11/29/2016] [Indexed: 10/20/2022]
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Botanas CJ, Yoon SS, de la Peña JB, dela Peña IJ, Kim M, Woo T, Seo JW, Jang CG, Park KT, Lee YH, Lee YS, Kim HJ, Cheong JH. A novel synthetic cathinone, 2-(methylamino)-1-(naphthalen-2-yl) propan-1-one (BMAPN), produced rewarding effects and altered striatal dopamine-related gene expression in mice. Behav Brain Res 2017; 317:494-501. [DOI: 10.1016/j.bbr.2016.10.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/07/2016] [Accepted: 10/09/2016] [Indexed: 01/02/2023]
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de la Peña JB, Cheong JH. The abuse liability of the NMDA receptor antagonist-benzodiazepine (tiletamine-zolazepam) combination: evidence from clinical case reports and preclinical studies. Drug Test Anal 2016; 8:760-7. [DOI: 10.1002/dta.1987] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/17/2016] [Accepted: 04/07/2016] [Indexed: 11/09/2022]
Affiliation(s)
- June Bryan de la Peña
- Uimyung Research Institute for Neuroscience; Sahmyook University; 815 Hwarang-ro Nowon-gu Seoul 139-742 Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience; Sahmyook University; 815 Hwarang-ro Nowon-gu Seoul 139-742 Korea
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Tampus R, Yoon SS, de la Peña JB, Botanas CJ, Kim HJ, Seo JW, Jeong EJ, Jang CG, Cheong JH. Assessment of the Abuse Liability of Synthetic Cannabinoid Agonists JWH-030, JWH-175, and JWH-176. Biomol Ther (Seoul) 2015; 23:590-6. [PMID: 26535085 PMCID: PMC4624076 DOI: 10.4062/biomolther.2015.120] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 08/21/2015] [Accepted: 08/25/2015] [Indexed: 11/05/2022] Open
Abstract
The emergence and use of synthetic cannabinoids have greatly increased in recent years. These substances are easily dispensed over the internet and on the streets. Some synthetic cannabinoids were shown to have abuse liability and were subsequently regulated by authorities. However, there are compounds that are still not regulated probably due to the lack of abuse liability studies. In the present study, we assessed the abuse liability of three synthetic cannabinoids, namely JWH-030, JWH-175, and JWH-176. The abuse liability of these drugs was evaluated in two of the most widely used animal models for assessing the abuse potential of drugs, the conditioned place preference (CPP) and self-administration (SA) test. In addition, the open-field test was utilized to assess the effects of repeated (7 days) treatment and abrupt cessation of these drugs on the psychomotor activity of animals. Results showed that JWH-175 (0.5 mg/kg), but not JWH-030 or JWH-176 at any dose, significantly decreased the locomotor activity of mice. This alteration in locomotor activity was only evident during acute exposure to the drug and was not observed during repeated treatment and abstinence. Similarly, only JWH-175 (0.1 mg/kg) produced significant CPP in rats. On the other hand, none of the drugs tested was self-administered by rats. Taken together, the present results indicate that JWH-175, but not JWH-030 and JWH-176, may have abuse potential. More importantly, our findings indicate the complex psychopharmacological effects of synthetic cannabinoids and the need to closely monitor the production, dispensation, and use of these substances.
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Affiliation(s)
- Reinholdgher Tampus
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Seong Shoon Yoon
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - June Bryan de la Peña
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Joung-Wook Seo
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Eun Ju Jeong
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Choon Gon Jang
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
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Botanas CJ, de la Peña JB, Dela Pena IJ, Tampus R, Kim HJ, Yoon SS, Seo JW, Jeong EJ, Cheong JH. Evaluation of the abuse potential of AM281, a new synthetic cannabinoid CB1 receptor antagonist. Eur J Pharmacol 2015; 766:135-41. [PMID: 26450088 DOI: 10.1016/j.ejphar.2015.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 08/29/2015] [Accepted: 10/02/2015] [Indexed: 11/30/2022]
Abstract
AM281 (1-(2,4-dichlorophenyl)-5-(4-iodophenyl)-4-methyl-N-4-morpholinyl-1H-pyrazole-3-carboxamide) is a new synthetic cannabinoid CB1 receptor antagonist. Similar to other cannabinoid antagonists, AM281 has been suggested to have therapeutic indications. However, recent reports have suggested that cannabinoid CB1 receptor antagonists may share similar behavioral effects with other drugs of abuse such as cocaine and amphetamine. These reports cast doubts on the safety profile of AM281. Thus, in the present study we evaluated the abuse potential (rewarding and reinforcing effects) of AM281 through two of the most widely used animal models for assessing the abuse potential of drugs: the conditioned place preference (CPP) and self-administration (SA) tests. Experiments were performed in Sprague-Dawley rats in various dosages [CPP (0.1, 0.5 or 2.5mg/kg), SA (0.005, 0.025 or 0.1mg/kg/infusion)]. We also delved into the consequences of repeated drug exposure on the subsequent response to the drug. Thus, parallel experiments were carried out in rats pretreated with AM281 for 7 or 14 days. Our findings indicated that AM281, at any dose, did not induce CPP and SA in drug-naïve rats. Interestingly, significant CPP (0.5mg/kg of AM281), but not SA, was observed in 14 days pretreated rats. These observations suggest that AM281 per se has no or minimal rewarding and reinforcing properties, but alterations in neuronal functions and behavior due to repeated AM281 exposure may contribute in part to the abuse potential of this drug. In view of this finding, we advocate the careful use, monitoring, and dispensation of AM281.
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Affiliation(s)
- Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - June Bryan de la Peña
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Irene Joy Dela Pena
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Reinholdgher Tampus
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Seong Shoon Yoon
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 305-343, Republic of Korea
| | - Joung-Wook Seo
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 305-343, Republic of Korea
| | - Eun Ju Jeong
- Center for Safety Pharmacology, Korea Institute of Toxicology, Daejeon 305-343, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, School of Pharmacy, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea.
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de la Peña JB, Ahsan HM, Tampus R, Botanas CJ, dela Peña IJ, Kim HJ, Sohn A, dela Peña I, Shin CY, Ryu JH, Cheong JH. Cigarette smoke exposure during adolescence enhances sensitivity to the rewarding effects of nicotine in adulthood, even after a long period of abstinence. Neuropharmacology 2015; 99:9-14. [PMID: 26116818 DOI: 10.1016/j.neuropharm.2015.06.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 06/19/2015] [Accepted: 06/22/2015] [Indexed: 12/18/2022]
Abstract
Adolescence is a period of enhanced vulnerability to the motivational properties of tobacco/cigarette smoking. Several studies have suggested that smoking initiation during this period will more likely lead to long-lasting cigarette or nicotine addiction. In the present study, we investigated the influences of adolescent cigarette smoke or nicotine exposure on the rewarding effects of nicotine, particularly whether these influences persist even after a long period of abstinence. Towards this, adolescent and adult Sprague-Dawley rats were repeatedly exposed to cigarette smoke or nicotine, for 14 days, and then were subjected to a 1-month abstinence period. Thereafter, the rewarding effects of nicotine were evaluated through the conditioned place preference (CPP) and self-administration (SA) tests. Even after a 1-month abstinence period, rats pre-exposed to either nicotine or cigarette smoke demonstrated enhanced CPP for the higher dose (0.6 mg/kg) of nicotine. Notably, cigarette smoke-preexposed adolescent rats, now adults, showed CPP for both 0.2 and 0.6 mg/kg dose of nicotine. Moreover, only these rats (pre-exposed to cigarette smoke during adolescence) showed significant acquisition and maintenance of nicotine (0.03 mg/kg/infusion) SA. These results suggest that cigarette smoke exposure during adolescence enhances sensitivity to the rewarding effects of nicotine in adulthood, even after a long period of abstinence. This may be a factor in the high rates of nicotine addiction and dependence observed in smokers who started during adolescence. More importantly, our findings highlight the enduring consequences of adolescent-onset cigarette smoking and the need to protect this vulnerable population.
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Affiliation(s)
- June Bryan de la Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Hafiz Muhammad Ahsan
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Reinholdgher Tampus
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Irene Joy dela Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Aeree Sohn
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea
| | - Ike dela Peña
- Department of Pharmaceutical and Administrative Sciences, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Chan Young Shin
- Department of Neuroscience, School of Medicine, Konkuk University, Seoul, 143-701, Republic of Korea
| | - Jong Hoon Ryu
- Department of Oriental Pharmaceutical Science and Kyung Hee East-West Pharmaceutical Research Institute, College of Pharmacy, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 815 Hwarang-ro Nowon-gu, Seoul, 139-742, Republic of Korea.
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Methoxetamine, a ketamine derivative, produced conditioned place preference and was self-administered by rats: Evidence of its abuse potential. Pharmacol Biochem Behav 2015; 133:31-6. [DOI: 10.1016/j.pbb.2015.03.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 03/04/2015] [Accepted: 03/10/2015] [Indexed: 01/05/2023]
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Ahsan HM, de la Peña JBI, Botanas CJ, Kim HJ, Yu GY, Cheong JH. Conditioned place preference and self-administration induced by nicotine in adolescent and adult rats. Biomol Ther (Seoul) 2014; 22:460-6. [PMID: 25414778 PMCID: PMC4201227 DOI: 10.4062/biomolther.2014.056] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 06/13/2014] [Accepted: 06/24/2014] [Indexed: 11/05/2022] Open
Abstract
Nicotine addiction is a worldwide problem. However, previous studies characterizing the rewarding and reinforcing effects of nicotine in animal models have reported inconsistent findings. It was observed that the addictive effects are variable on different factors (e.g. route, dose, and age). Here, we evaluated the rewarding and reinforcing effects of nicotine in different routes of administration, across a wide dose range, and in different age groups. Two of the most widely used animal models of drug addiction were employed: the conditioned place preference (CPP) and self-administration (SA) tests. Nicotine CPP was evaluated in different routes [intraperitoneal (i.p.) and subcutaneous (s.c.)], doses (0.05 to 1.0 mg/kg) and age [adolescent and adult rats]. Similarly, intravenous nicotine SA was assessed in different doses (0.01 to 0.06 mg/kg/infusion) and age (adolescent and adult rats). In the CPP test, s.c. nicotine produced greater response than i.p. The 0.2 mg/kg dose produced highest CPP response in adolescent, while 0.6 mg/kg in adult rats; which were also confirmed in 7 days pretreated rats. In the SA test, adolescent rats readily self-administer 0.03 mg/kg/infusion of nicotine. Doses that produced nicotine CPP and SA induced blood nicotine levels that corresponded well with human smokers. In conclusion, we have demonstrated that nicotine produces reliable CPP [0.2 mg/kg dose (s.c.)] in adolescents and [0.6 mg/kg dose (s.c.)] in adults, and SA [0.03 mg/kg/infusion] in adolescent rats. Both tests indicate that adolescent rats are more sensitive to the rewarding and reinforcing effects of nicotine.
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Affiliation(s)
- Hafiz Muhammad Ahsan
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 139-742
| | - June Bryan I de la Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 139-742
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 139-742
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 139-742
| | - Gu Yong Yu
- Department of Chemistry, Sahmyook University, Seoul 139-742, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 139-742
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Hillhouse TM, Porter JH, Negus SS. Dissociable effects of the noncompetitive NMDA receptor antagonists ketamine and MK-801 on intracranial self-stimulation in rats. Psychopharmacology (Berl) 2014; 231:2705-16. [PMID: 24522331 PMCID: PMC4058412 DOI: 10.1007/s00213-014-3451-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 12/31/2013] [Indexed: 11/27/2022]
Abstract
RATIONALE The noncompetitive NMDA antagonist ketamine produces rapid antidepressant effects in treatment-resistant patients suffering from major depressive and bipolar disorders. However, abuse liability is a concern. OBJECTIVES This study examined abuse-related effects of ketamine using intracranial self-stimulation (ICSS) in rats. The higher-affinity NMDA antagonist MK-801 and the monoamine reuptake inhibitor cocaine were examined for comparison. METHODS Male Sprague Dawley rats were implanted with electrodes targeting the medial forebrain bundle and trained to respond to brain stimulation under a frequency-rate ICSS procedure. The first experiment compared the potency and time course of ketamine (3.2-10.0 mg/kg) and MK-801 (0.032-0.32 mg/kg). The second experiment examined effects of repeated dosing with ketamine (3.2-20.0 mg/kg/day) and acute cocaine (10.0 mg/kg). RESULTS Following acute administration, ketamine (3.2-10 mg/kg) produced only dose- and time-dependent depressions of ICSS and failed to produce an abuse-related facilitation of ICSS at any dose or pretreatment time. In contrast, MK-801 (0.032-0.32 mg/kg) produced a mixed profile of rate-increasing and rate-decreasing effects; ICSS facilitation was especially prominent at an intermediate dose of 0.18 mg/kg. Repeated dosing with ketamine produced dose-dependent tolerance to the rate-decreasing effects of ketamine (10.0 and 18.0 mg/kg) but failed to unmask expression of ICSS facilitation. Termination of ketamine treatment failed to produce withdrawal-associated decreases in ICSS. As reported previously, 10.0 mg/kg cocaine facilitated ICSS. CONCLUSIONS The dissociable effects of ketamine and MK-801 suggest differences in the pharmacology of these nominally similar NMDA antagonists. Failure of ketamine to facilitate ICSS contrasts with other evidence for the abuse liability of ketamine.
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Affiliation(s)
- Todd M. Hillhouse
- Department of Psychology, Virginia Commonwealth University, PO Box 842018, 806 West Franklin Street, Richmond 23284, VA, USA
| | - Joseph H. Porter
- Department of Psychology, Virginia Commonwealth University, PO Box 842018, 806 West Franklin Street, Richmond 23284, VA, USA
| | - S. Stevens Negus
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, PO Box 980613, Richmond VA 23298, USA
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de la Peña JB, Ahsan HM, Botanas CJ, Sohn A, Yu GY, Cheong JH. Adolescent nicotine or cigarette smoke exposure changes subsequent response to nicotine conditioned place preference and self-administration. Behav Brain Res 2014; 272:156-64. [PMID: 24991754 DOI: 10.1016/j.bbr.2014.06.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 06/21/2014] [Accepted: 06/23/2014] [Indexed: 10/25/2022]
Abstract
Nicotine/cigarette addiction starts young. Indeed, most smokers started when they were adolescents. Adolescence has been implicated to be a critical period for nicotine/cigarette addiction, thus it is important to understand the consequences of such early exposure. In the present study, we sought to characterize the effects of adolescent nicotine or cigarette smoke pre-exposure on the subsequent addictive effects of nicotine. The rewarding and reinforcing effects of nicotine were evaluated in drug-naïve, nicotine pre-exposed, or cigarette smoke pre-exposed adolescent and adult rats, through the conditioned place preference (CPP) and the self-administration (SA) tests. In the CPP test, drug-naïve adolescent rats demonstrated CPP for the 0.2mg/kg dose of nicotine, while drug-naïve adult rats showed CPP for the relatively higher dose of 0.6mg/kg. Pre-exposed adolescent rats showed diminished response for the 0.2mg/kg, instead significant CPP was observed for the higher dose (0.6mg/kg) of nicotine. No significant change was observed in pre-exposed adult rats. Interestingly, cigarette smoke pre-exposed adolescent rats showed substantially higher nicotine CPP (0.6mg/kg) than to its nicotine-pre-exposed or adult counterpart. In the SA test, drug-naïve adolescent rats reliably produced stable nicotine (0.03mg/kg/infusion) self-administration, but drug-naïve adult rats did not. Surprisingly, however, nicotine or cigarette smoke pre-exposed adolescent and adult rats showed decreased nicotine self-administration. These results conform with the growing notion that adolescents are more sensitive to the addictive effects of nicotine and that nicotine or cigarette smoke exposure during this period produces complex behavioral changes which may influence subsequent response to nicotine.
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Affiliation(s)
- June Bryan de la Peña
- Uimyung Research Institute for Neuroscience, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Hafiz Muhammad Ahsan
- Uimyung Research Institute for Neuroscience, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Chrislean Jun Botanas
- Uimyung Research Institute for Neuroscience, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Aeree Sohn
- Uimyung Research Institute for Neuroscience, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Gu Young Yu
- Department of Chemistry, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Sahmyook University, 26-21 Kongreung-2-dong, Hwarangro-815 Nowon-gu, Seoul 139-742, Republic of Korea.
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de la Peña JB, Ahsan HM, dela Peña IJ, Park HB, Kim HJ, Sohn A, Kim YT, Cheong JH. Propofol pretreatment induced place preference and self-administration of the tiletamine-zolazepam combination: implication on drug of abuse substitution. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2014; 40:321-6. [DOI: 10.3109/00952990.2014.920850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | - Hafiz Muhammad Ahsan
- Uimyung Research Institute for Neuroscience, Sahmyook University
Nowon-gu, Seoul
| | - Irene Joy dela Peña
- Uimyung Research Institute for Neuroscience, Sahmyook University
Nowon-gu, Seoul
| | - Hyun Bin Park
- Uimyung Research Institute for Neuroscience, Sahmyook University
Nowon-gu, Seoul
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Sahmyook University
Nowon-gu, Seoul
| | - Aeree Sohn
- Uimyung Research Institute for Neuroscience, Sahmyook University
Nowon-gu, Seoul
| | - Yun Tai Kim
- Department of Applied Bioscience, College of Life Science
Gyeongghi-doKorea
| | - Jae Hoon Cheong
- Uimyung Research Institute for Neuroscience, Sahmyook University
Nowon-gu, Seoul
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de la Peña JBI, dela Peña IJI, Lee HL, dela Peña I, Shin CY, Sohn AR, Cheong JH. Pre-exposure to ethanol, but not to caffeine and nicotine, induced place preference and self-administration of the NMDA receptor antagonist-benzodiazepine combination, Zoletil®. Pharmacol Biochem Behav 2013; 110:231-7. [PMID: 23916424 DOI: 10.1016/j.pbb.2013.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/22/2013] [Accepted: 07/24/2013] [Indexed: 11/30/2022]
Abstract
Zoletil® is an equal amount combination of the NMDA receptor antagonist, tiletamine, and the benzodiazepine, zolazepam, usually used as a veterinary anesthetic. Previous studies have shown that pre-exposure to Zoletil® and other psychoactive drugs (e.g. ketamine, diazepam) plays a significant role in the abuse liability of the compound. However, these studies were only focused on illicit psychoactive drugs and not on the more widely used licit psychoactive substances. Thus, the goal of the present work is to investigate whether pre-exposure to the three most commonly used licit psychoactive substances (caffeine, nicotine, and ethanol) affects the rewarding and reinforcing effects of Zoletil®. Rats were pretreated with caffeine (1.25 or 2.5 mg/kg), nicotine (125 or 250 μg/kg), ethanol (0.5, 2, or 4 g/kg), or saline (1 ml/kg) for 14 days, and evaluated for subsequent Zoletil® place preference (2.5 mg/kg) and self-administration (250 μg/kg). Zoletil® produced neither place preference nor self-administration in saline-pretreated rats. Pre-exposure to caffeine or nicotine does not have significant effects on Zoletil®'s abuse potential. However, pretreatment of ethanol significantly produced Zoletil® place preference and self-administration. These results suggest that individuals who are exposed to ethanol may have a high propensity to use/abuse Zoletil®. More importantly, the present result advocates the careful monitoring on the use and dispensation of Zoletil® or related substances.
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Affiliation(s)
- June Bryan I de la Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, 26-21 Kongneung-2-dong, Nowon-gu, Seoul 139-742, Republic of Korea
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