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Antimania-Like Effect of Panax ginseng Regulating the Glutamatergic Neurotransmission in REM-Sleep Deprivation Rats. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3636874. [PMID: 33123570 PMCID: PMC7586145 DOI: 10.1155/2020/3636874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 08/29/2020] [Accepted: 09/28/2020] [Indexed: 11/17/2022]
Abstract
Previous studies have shown the therapeutic properties of ginseng and ginsenosides on hyperactive and impulsive behaviors in several psychiatric diseases. Herein, we investigated the effect of Panax ginseng Meyer (PG) on hyperactive/impulsive behaviors in a manic-like animal model, sleep deprivation (SD) rats. Male rats were sleep-deprived for 48 h, and PG (200 mg/kg) was administered for 4 days, from 2 days prior to the start of SD to the end date of SD. The elevated plus maze (EPM) test showed that PG alleviated the increased frequency of entries into and spent time within open arms by SD. In order to investigate the molecular mechanism on this effect of PG, we assessed differentially expressed genes (DEGs) in the prefrontal cortex of PG-treated SD rats using RNA sequencing (RNA-seq) and performed gene-enrichment analysis for DEGs. The gene-enrichment analysis showed that PG most prominently affected the glutamatergic synapse pathway. Among the glutamatergic synapse pathway genes, particularly, PG enhanced the expressions of glutamate transporter Slc1a3 and Slc1a2 reduced in SD rats. Moreover, we found that PG could inhibit the SD-induced phosphorylation of the NR2A subunit of the NMDA receptor. These results suggested that PG might have a therapeutic effect against the manic-like behaviors, regulating the glutamatergic neurotransmission.
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Gu SM, Cha HJ, Seo SW, Hong JT, Yun J. Dopamine D1 receptor antagonist reduces stimulant-induced conditioned place preferences and dopamine receptor supersensitivity. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:131-138. [PMID: 31372696 DOI: 10.1007/s00210-019-01694-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 07/12/2019] [Indexed: 01/24/2023]
Abstract
Repeated administration of stimulants induces conditioned place preference (CPP). Dopamine receptor supersensitivity is developed in stimulant-induced CPP animals; however, dopamine receptor subtypes associated with the development of supersensitivity in CPP animals are largely unknown. The present preclinical study aimed to examine whether dopamine D1 or D2 receptor antagonists exert inhibitory effects on stimulant-induced psychological behaviors. Additionally, the authors aimed to elucidate the role of dopamine receptor supersensitivity on the development of reward-related behavior. Sprague Dawley rats subjected to methamphetamine- and cocaine-induced CPP tests were treated with dopamine D1 (SCH23390) or D2 (sulpiride) receptor antagonists. Following the CPP experiment, rats were challenged with apomorphine (dopamine receptor agonist), and locomotor activity was measured. Methamphetamine- and cocaine-induced CPP was reduced with the administration of SCH23390, but not sulpiride. In addition, the apomorphine challenge evoked an increase in locomotor activity in stimulant-pre-treated rats, reflecting dopamine receptor supersensitivity. SCH23390 pre-treatment inhibited the development of dopamine receptor supersensitivity, while sulpiride demonstrated no inhibitory effects. These results suggest that the dopamine D1 receptor antagonist SCH23390 inhibits the development of dopamine receptor supersensitivity which is associated with the development of CPP.
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Affiliation(s)
- Sun Mi Gu
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea
| | - Hye Jin Cha
- National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Heungdeok-gu, Cheongju, Chungbuk, 28159, Republic of Korea
| | - So Woon Seo
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
| | - Jaesuk Yun
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
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Gao Y, Chu S, Zhang Z, Chen N. Hepataprotective effects of ginsenoside Rg1 - A review. JOURNAL OF ETHNOPHARMACOLOGY 2017; 206:178-183. [PMID: 28427912 DOI: 10.1016/j.jep.2017.04.012] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 04/13/2017] [Accepted: 04/16/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND AND ETHNOPHARMACOLOGICAL RELEVANCE Ginseng has been used as efficient tonic and for the treatment of various diseases including hepatic disorders. Ginseng saponins, also known as ginsenosides, are principal constituents and have been treated to be responsible for disparate ginseng health benefits. The current review mainly focuses on ginsenoside Rg1, a compound isolated from traditional Chinese herbal medicine Panax ginseng Meyer. AIMS To summary the hepataprotective effects and related mechanisms of ginsenoside Rg1, we conclude this review by combining the literature and our own researches. METHODS As evidenced, we organized the pharmacological function of ginsenoside Rg1 by searching the pubmed. It has been deeply studied and summarized in the field of neurobiology, however, in this paper we described the pharmacological function of Rg1 in liver related to antioxidative stress and anti-inflammation. R&D: Individual ginsenoside could be used since it shows a wide array of beneficial functions in the regulation and disorders of acute and chronic hepatotoxicity, hepatitis, hepatic fibrosis and cirrhosis in various pathways and different mechanisms. Of note, the antioxidant hepatic protection of ginsenoside Rg1 is mainly through the induction of Keap1-Nrf2-ARE signaling pathway. CONCLUSION The multi-target actions of Rg1 substantiates it as a promising drug candidate for the treatment of hepatic impairment in different factors induced liver diseases.
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Affiliation(s)
- Yan Gao
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shifeng Chu
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; Hunan University of Chinese Medicine, Changsha 410208, China
| | - Zhao Zhang
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Naihong Chen
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; Hunan University of Chinese Medicine, Changsha 410208, China.
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Yun J, Jung YS. A Scutellaria baicalensis radix water extract inhibits morphine-induced conditioned place preference. PHARMACEUTICAL BIOLOGY 2014; 52:1382-1387. [PMID: 25068674 DOI: 10.3109/13880209.2014.892514] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
CONTEXT Scutellaria baicalensis Georgi (Lamiaceae) has been used as a traditional herbal preparation for the treatment of neuropsychiatric disorders in Asian countries for centuries. OBJECTIVE To evaluate the effects of S. baicalensis on morphine-induced drug dependence in rats. MATERIALS AND METHODS In order to evaluate the effect of S. baicalensis and baicalin on morphine-induced dependence-like behavior, a water extract of S. baicalensis [500 mg/kg, intraperitoneally (i.p.)] or baicalin (50 mg/kg, i.p., a flavonoid found in S. baicalensis) was administered prior to morphine injection [5 and 2.5 mg/kg, respectively, subcutaneously (s.c.)] to rats for 8 and 4 d, respectively. Morphine-induced conditioned place preference was assessed by measuring the time spent in a drug-paired chamber. The effect of S. baicalensis on dopamine receptor supersensitivity (locomotor activity) and dopamine agonist-induced climbing behavior due to a single apomorphine treatment (2 mg/kg, s.c.) was also measured. RESULTS At 50 mg/kg, a water extract of S. baicalensis decreased morphine (5 mg/kg)-induced conditioned place preference by 86% in rats. Apomorphine (2 mg/kg)-induced locomotor activity (dopamine receptor supersensitivity) in rats and climbing behavior in mice were attenuated after pretreatment with 500 mg/kg of S. baicalensis water extract by 41% and 56%, respectively. In addition, baicalin-reduced morphine-induced conditioned places preference by 86% in rats at 50 mg/kg. DISCUSSION AND CONCLUSION These results suggest that S. baicalensis can ameliorate drug addiction-related behavior through functional regulation of dopamine receptors.
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Affiliation(s)
- Jaesuk Yun
- Pharmaceutical Standardization Research and Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety , Busan , Republic of Korea and
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Hao K, Gong P, Sun SQ, Hao HP, Wang GJ, Dai Y, Liang Y, Xie L, Li FY. Beneficial estrogen-like effects of ginsenoside Rb1, an active component of Panax ginseng, on neural 5-HT disposition and behavioral tasks in ovariectomized mice. Eur J Pharmacol 2011; 659:15-25. [PMID: 21414307 DOI: 10.1016/j.ejphar.2011.03.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 02/08/2011] [Accepted: 03/01/2011] [Indexed: 11/29/2022]
Abstract
Decreased 5-hydroxytryptamine (5-HT) concentration in the brain has been linked to central nervous system dysfunctions, especially in menopausal women. Ginsenoside Rb1, a potential phytoestrogen, has been shown to improve central nervous system dysfunctions, comparable to the estrogen treatment. To investigate the estrogen-like effects of ginsenoside Rb1 on neural 5-HT disposition and behavioral tasks, we quantified the concentrations of 5-HT and other related endogenous substances in the frontal cortex and striatum of ovariectomized mice. The activities of tryptophan hydroxylase (TPH), aromatic amino acid decarboxylase (AAAD) and monoamine oxidase (MAO) were also measured to evaluate the synthesis and metabolism of neural 5-HT. Our work shows that both ginsenoside Rb1 and estradiol increased the neural 5-HT concentration. Ginsenoside Rb1 and estradiol administration resulted in elevated TPH and depressed MAO activities, indicating that modulating the synthesis and metabolism of neural 5-HT successfully elevated 5-HT concentration. Ginsenoside Rb1 and estradiol also improved object recognition and decreased immobility time in the forced swimming test. However, a pretreatment with clomiphene (an estrogen receptor antagonist) blocked the beneficial effects of ginsenoside Rb1 and estradiol, suggesting that the estrogen-like effects of ginsenoside Rb1 were estrogen receptor-dependent.
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Affiliation(s)
- Kun Hao
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Ping Gong
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Shi-Qing Sun
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Hai-Ping Hao
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Guang-Ji Wang
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Yue Dai
- College of Traditional Chinese Materia Medica, China Pharmaceutical University, Nanjing, PR China
| | - Yan Liang
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Lin Xie
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
| | - Fei-Yan Li
- Key Lab of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, PR China
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Lu L, Liu Y, Zhu W, Shi J, Liu Y, Ling W, Kosten TR. Traditional medicine in the treatment of drug addiction. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2009; 35:1-11. [PMID: 19152199 DOI: 10.1080/00952990802455469] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AIMS To evaluate clinical trials and neurochemical mechanisms of the action of traditional herbal remedies and acupuncture for treating drug addiction. METHODS We used computerized literature searches in English and Chinese and examined texts written before these computerized databases existed. We used search terms of treatment and neurobiology of herbal medicines, and acupuncture for drug abuse and dependence. RESULTS Acupuncture showed evidence for clinical efficacy and relevant neurobiological mechanisms in opiate withdrawal, but it showed poor efficacy for alcohol and nicotine withdrawal or relapse prevention, and no large studies supported its efficacy for cocaine in well-designed clinical trials. Clinical trials were rare for herbal remedies. Radix Puerariae showed the most promising efficacy for alcoholism by acting through daidzin, which inhibits mitocochondrial aldehyde dehydrogenase 2 and leads to disulfiram-like alcohol reactions. Peyote also has some evidence for alcoholism treatment among Native Americans. Ginseng and Kava lack efficacy data in addictions, and Kava can be hepatotoxic. Thunbergia laurifolia can protect against alcoholic liver toxicity. Withania somnifera and Salvia miltiorrhiza have no efficacy data, but can reduce morphine tolerance and alcohol intake, respectively, in animal models. CONCLUSIONS Traditional herbal treatments can compliment pharmacotherapies for drug withdrawal and possibly relapse prevention with less expense and perhaps fewer side effects with notable exceptions. Both acupuncture and herbal treatments need testing as adjuncts to reduce doses and durations of standard pharmacotherapies.
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Affiliation(s)
- Lin Lu
- National Institute on Drug Dependence, Peking University, Beijing, China.
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Kitaoka K, Uchida K, Okamoto N, Chikahisa S, Miyazaki T, Takeda E, Séi H. Fermented ginseng improves the first-night effect in humans. Sleep 2009; 32:413-21. [PMID: 19294962 DOI: 10.1093/sleep/32.3.413] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
STUDY OBJECTIVES The goal of this study was to clarify whether ginseng fermented by lactic acid bacteria (fermented ginseng, FG), can improve the first-night effect (FNE) in humans. DESIGN Behavioral tests and quantification of mRNA expression related to GABAergic neurotransmission in brain (glutamic acid decarboxylase 1, gamma-aminobutyrate aminotransferase [Abat], gamma-aminobutyric acid transporter 1 [GAT1], gamma-aminobutyric acid transporter 4, gamma-aminobutyric acid A receptor subunit alpha 1 and gamma-aminobutyric acid A receptor subunit alpha 2) were carried out in FG-treated mice. We also performed double-blind sleep recordings of human subjects given FG or placebo. SETTING A university-based sleep laboratory. PATIENTS OR PARTICIPANTS Sixteen healthy male volunteers (aged 20.69 +/- 0.44 years) were observed in the human study. INTERVENTIONS At the end of administration, 2 consecutive all-night polysomnography recordings were performed. Subjects also completed psychological questionnaires, and urine and saliva samples were taken to analyze stress-sensitive markers. MEASUREMENTS AND RESULTS The light-dark transition test demonstrated that FG had some anxiolytic effect in mice, but other anxiety measures were unaffected. The hippocampal mRNA expression showed a decrease of Abat and GAT1 suggesting an increase of GABA. Other regions (amygdala and cerebellum) showed no differences. Furthermore, there was some evidence (using simple pairwise comparisons but not supported in the full ANOVA model) that administration of FG tended to diminish decreases in total sleep time and sleep efficiency (seen as first night effects in the placebo group) without affecting sleep architecture. CONCLUSIONS Our results suggest the administration of FG could improve the FNE in humans. The improvement may be related to an anxiolytic effect of FG which acts via GABAergic modification.
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Affiliation(s)
- Kazuyoshi Kitaoka
- Department of Integrative Physiology, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan
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MA Y, KIM YB, NAM SY, CHEONG JH, PARK SH, KIM HJ, HONG JT, OH KW. Effects of red ginseng extract on sleep architecture and electroencephalogram power spectra in rats. Sleep Biol Rhythms 2009. [DOI: 10.1111/j.1479-8425.2009.00391.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lee B, Yang CH, Hahm DH, Lee HJ, Han SM, Kim KS, Shim I. Inhibitory Effects of Ginseng Total Saponins on Behavioral Sensitization and Dopamine Release Induced by Cocaine. Biol Pharm Bull 2008; 31:436-41. [DOI: 10.1248/bpb.31.436] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- BomBi Lee
- Department of Neurobiology, Division of Neuroscience, Children's Hospital and Harvard Medical School
| | - Chae Ha Yang
- Department of Physiology, College of Oriental Medicine, Daegu Haany University
| | - Dae-Hyun Hahm
- Acupuncture and Meridianology Scientific Research Center, Kyung Hee University
| | - Hye-Jung Lee
- Acupuncture and Meridianology Scientific Research Center, Kyung Hee University
| | - Seung-Moo Han
- Department of Biomedical Engineering, Kyung Hee University
| | - Kyung-Soo Kim
- Department of Integrative Medicine, College of Medicine, The Catholic University of Korea
| | - Insop Shim
- Department of Integrative Medicine, College of Medicine, The Catholic University of Korea
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The Inhibition of Epileptogenesis During Status Epilepticus by Ginsenosides of Korean Red Ginseng and Ginseng Cell Culture (Dan25). J Ginseng Res 2007. [DOI: 10.5142/jgr.2007.31.3.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Tzschentke TM. Measuring reward with the conditioned place preference (CPP) paradigm: update of the last decade. Addict Biol 2007; 12:227-462. [PMID: 17678505 DOI: 10.1111/j.1369-1600.2007.00070.x] [Citation(s) in RCA: 1006] [Impact Index Per Article: 59.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Conditioned place preference (CPP) continues to be one of the most popular models to study the motivational effects of drugs and non-drug treatments in experimental animals. This is obvious from a steady year-to-year increase in the number of publications reporting the use this model. Since the compilation of the preceding review in 1998, more than 1000 new studies using place conditioning have been published, and the aim of the present review is to provide an overview of these recent publications. There are a number of trends and developments that are obvious in the literature of the last decade. First, as more and more knockout and transgenic animals become available, place conditioning is increasingly used to assess the motivational effects of drugs or non-drug rewards in genetically modified animals. Second, there is a still small but growing literature on the use of place conditioning to study the motivational aspects of pain, a field of pre-clinical research that has so far received little attention, because of the lack of appropriate animal models. Third, place conditioning continues to be widely used to study tolerance and sensitization to the rewarding effects of drugs induced by pre-treatment regimens. Fourth, extinction/reinstatement procedures in place conditioning are becoming increasingly popular. This interesting approach is thought to model certain aspects of relapse to addictive behavior and has previously almost exclusively been studied in drug self-administration paradigms. It has now also become established in the place conditioning literature and provides an additional and technically easy approach to this important phenomenon. The enormous number of studies to be covered in this review prevented in-depth discussion of many methodological, pharmacological or neurobiological aspects; to a large extent, the presentation of data had to be limited to a short and condensed summary of the most relevant findings.
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Affiliation(s)
- Thomas M Tzschentke
- Grünenthal GmbH, Preclinical Research and Development, Department of Pharmacology, Aachen, Germany.
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Eun JS, Bae K, Yun YP, Hong JT, Kwon HN, Oh KW. Inhibitory effects of paeonol on morphine-induced locomotor sensitization and conditioned place preference in mice. Arch Pharm Res 2006; 29:904-10. [PMID: 17121187 DOI: 10.1007/bf02973913] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The inhibitory effects of paeonol, a major compound of Paeoniae radix, on the development of locomotor sensitization, conditioned place preference (CPP) and dopamine receptor supersensitivity induced by the repeated administration of morphine were investigated through behavioral experiments. A single administration of morphine produces hyperlocomotion. Repeated administration of morphine develops sensitization (reverse tolerance), a progressive enhancement of locomotion, which is used as a model for studying the drug-induced drug-seeking behaviors, and CPP, which is used as a model for studying drug reinforcement. Paeonol inhibited morphine-induced hyperlocomotion, sensitization and CPP. In addition, paeonol inhibited the development of postsynaptic dopamine receptors supersensitivity, which may be an underlying common mechanism that mediates the morphine-induced dopaminergic behaviors such as sensitization and CPP. Apomorphine (a dopamine agonist)-induced climbing behaviors also were inhibited by a single direct administration of paeonol. These results provide evidence that paeonol exerts anti-dopaminergic activity, and it is suggested that paeonol may be useful for the prevention and therapy of these adverse actions of morphine.
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Affiliation(s)
- Jae Soon Eun
- College of Pharmacy, Woosuk University, Samrye 565-701, Korea
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Kim HC, Shin EJ, Jang CG, Lee MK, Eun JS, Hong JT, Oh KW. Pharmacological action of Panax ginseng on the behavioral toxicities induced by psychotropic agents. Arch Pharm Res 2005; 28:995-1001. [PMID: 16212227 DOI: 10.1007/bf02977391] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Morphine-induced analgesia has been shown to be antagonized by ginseng total saponins (GTS), which also inhibit the development of analgesic tolerance to and physical dependence on morphine. GTS is involved in both of these processes by inhibiting morphine-6-dehydrogenase, which catalyzes the synthesis of morphinone from morphine, and by increasing the level of hepatic glutathione, which participates in the toxicity response. Thus, the dual actions of ginseng are associated with the detoxification of morphine. In addition, the inhibitory or facilitated effects of GTS on electrically evoked contractions in guinea pig ileum (mu-receptors) and mouse vas deferens (delta-receptors) are not mediated through opioid receptors, suggesting the involvement of non-opioid mechanisms. GTS also attenuates hyperactivity, reverse tolerance (behavioral sensitization), and conditioned place preference induced by psychotropic agents, such as methamphetamine, cocaine, and morphine. These effects of GTS may be attributed to complex pharmacological actions between dopamine receptors and a serotonergic/adenosine A2A/ delta-opioid receptor complex. Ginsenosides also attenuate the morphine-induced cAMP signaling pathway. Together, the results suggest that GTS may be useful in the prevention and therapy of the behavioral side effects induced by psychotropic agents.
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Affiliation(s)
- Hyoung-Chun Kim
- Neurotoxicology Program, College of Pharmacy, Kangwon National University, Chunchon, Korea
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Cha HY, Park JH, Hong JT, Yoo HS, Song S, Hwang BY, Eun JS, Oh KW. Anxiolytic-like effects of ginsenosides on the elevated plus-maze model in mice. Biol Pharm Bull 2005; 28:1621-5. [PMID: 16141527 DOI: 10.1248/bpb.28.1621] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In a previous study, we reported that ginseng extract has anxiolytic-like effects in the elevated plus-maze model and that the ginseng saponin fraction plays an important role. This experiment was performed to investigate the anxiolytic-like effects of ginsenosides Rb1, Rg1, Rg3-R, and Rg3-S, and the Rg5 and Rk mixture isolated from the ginseng saponin fraction in the elevated plus-maze. Furthermore, the anxiolytic-effects of Rb1, Rg1, Rg3-R, Rg3-S, and the Rg5 and Rk mixture were compared with those of a well-known active anxiolytic drug (diazepam). The oral administration of ginsenoside Rb1 significantly increased the number of open arm entries and the time spent on the open arm compared with those in the vehicle-treated group. Ginsenoside Rg1 and the Rg5 and Rk mixture also significantly increased the number of open arm entries and the time spent on the open arm. However, ginsenosides Rg3-R and Rg3-S did not increase the number of open arm entries or the time spent on the open arm. On the other hand, ginsenoside Rb1 and the Rg5 and Rk mixture decreased locomotor activity in a manner similar to diazepam. These data indicate that ginsenosides Rb1, Rg1, and the Rg5 and Rk mixture have anxiolytic-like effects, but ginsenosides Rg3-R and Rg3-S do not in this model. We provide evidence that some ginsenosides may be useful for the treatment of anxiety.
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Affiliation(s)
- Hwa-Young Cha
- College of Pharmacy, Chungbuk National University, Cheongju, Korea
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Park JK, Namgung U, Lee CJ, Park JO, Jin SH, Kwon OB, Ko SR, Kim SW, Kang EJ, Ko JH, Lee SM, Kim DH, Won MH. Calcium-independent CaMKII activity is involved in ginsenoside Rb1-mediated neuronal recovery after hypoxic damage. Life Sci 2005; 76:1013-25. [PMID: 15607330 DOI: 10.1016/j.lfs.2004.10.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2004] [Accepted: 07/27/2004] [Indexed: 10/26/2022]
Abstract
Recent studies have indicated that Ginsenoside Rb1, one of the major components of ginseng root, may play an important role in protecting cells from damage. Here, we investigated the neuroprotective activity of Rb1 after hypoxic injury in young rats. About 50% animals were dead by exposing hypoxic condition three times in three consecutive days. Then, the pretreatment with Rb1 prior to hypoxic stimulation reduced animal death to 12%, and also significantly reduced the recovery time from hypoxia-related, compromised symptoms in survived animals. Rb1 also significantly reduced levels of lactate dehydrogenase (LDH) release from primary hippocampal neurons which were maintained at low oxygen concentration, indicating increased neuronal survival by Rb1. Ca(2+)/calmodulin-dependent kinase II (CaMKII) activity in the hippocampal tissues of hypoxia-induced rats was decreased to about 50% of the control animal. Then Rb1-treatment prior to hypoxic stimulation significantly elevated Ca(2+)-independent kinase II activity when measured 48 hr after hypoxic stimulation. Thus, the present data suggest that calcium independent CaMKII activity may be involved in the process of ginsenoside Rb1-mediated recovery of neuronal cells after hypoxic damage.
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Affiliation(s)
- Jin Kyu Park
- Department of Bio-institute, KT & G Central Research Institute, 302, Sinseong-dong, Yuseong-gu, Daejeon 305-805, Korea.
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Anxiolytic Effects of Total Saponin Fraction from Ginseng Radix Rubra on the Elevated Plus-Maze Model in Mice. J Ginseng Res 2004. [DOI: 10.5142/jgr.2004.28.3.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Shin KW, Hong JT, Yoo HS, Song S, Oh KW. Inhibitory effects of glycine on morphine-induced hyperactivity, reverse tolerance and postsynaptic dopamine receptor supersensitivity in mice. Arch Pharm Res 2003; 26:1074-8. [PMID: 14723343 DOI: 10.1007/bf02994761] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The effects of glycine on morphine-induced hyperactivity, reverse tolerance and postsynaptic dopamine receptor supersensitivity in mice was examined. A single administration of morphine (10 mg/kg, s.c.) induced hyperactivity as measured in mice. The morphine-induced hyperactivity was inhibited by pretreatment with glycine (100, 200 and 400 mg/kg, i.p.). In addition, it was found repeated administration of morphine (10 mg/kg, s.c.) to mice daily for 6 days caused an increase in motor activity which could be induced by a subsequent morphine dose, an effect known as reverse tolerance or sensitization. Glycine (100, 200 and 400 mg/kg, i.p.) also inhibited morphine-induced reverse tolerance. Mice that had received 7 daily repeated administrations of morphine also developed postsynaptic dopamine receptor supersensitivity, as shown by enhanced ambulatory activity after administration of apomorphine (2 mg/kg, s.c.). Glycine inhibited the development of postsynaptic dopamine receptor supersensitivity induced by repeated administration of morphine. It is suggested that the inhibitory effects of glycine might be mediated by dopaminergic (DAergic) transmission. Accordingly, the inhibition by glycine of the morphine-induced hyperactivity, reverse tolerance and dopamine receptor supersensitivity suggests that glycine might be useful for the treatment of morphine addiction.
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Affiliation(s)
- Kyung Wook Shin
- Department of Pharmacy, College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
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Yu S, Ng YY, Jian ZH, Chen CC, Lu MS, Lu HY, Chu CP. Neurotransmitter levels in brains of chronically Jiawey Siwu-treated rats. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2003; 30:507-19. [PMID: 12568278 DOI: 10.1142/s0192415x02000570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Levels of monoamines and metabolites, excitatory amino acids, and gamma-aminobutyric acid (GABA) were investigated in discrete brain areas of chronic Jiawey Siwu (JS)-treated rats. Male Sprague-Dawley rats were dosed orally for 3 months with normal saline or JS at 0.21, 1.05 or 4.2 g/kg/day. Body weights of these four groups were similar over 3 months. Most effects of JS revealed a dose dependency with levels of neurotransmitters. Levels of norepinephrine (NE) and epinephrine (EPI) in cerebral cortex; EPI, vanillylmandelic acid (VMA), dopamine (DA) and 5-hydroxytryptamine (5-HT) in medulla oblongata; DA in midbrain; NE and 5-HT in amygdala; and 5-HT in hypothalamus had decreased in JS-treated rats. 3-Methoxytyramine (3-MT) in cerebral cortex; 5-hydroxyindole-3-acetic acid (5-HIAA) in medulla oblongata; NE, 3-MT and homovanillic acid (HVA) in pons; EPI and 3-MT in midbrain; 3-MT and HVA in amygdala; 3-MT, 3,4-dihydroxyphenylacetic acid (DOPAC), HVA and 5-HIAA in cerebellum; HVA in hypothalamus; and DOPAC and HVA in hippocampus had all increased in JS-treated rats. In pons, 5-HT increased with low and decreased with high JS doses. Ratios of DA/3-MT in pons and midbrain; DA/HVA in pons and cerebellum; and 5-HT/5-HIAA in medulla oblongata, cerebellum and hypothalamus had decreased. Furthermore, aspartate (ASP) and glutamate (GLU) levels had decreased in cerebral cortex, midbrain, hypothalamus and hippocampus or amygdala, and increased in pons. GABA levels were reduced in cerebral cortex, and higher in medulla oblongata, pons, amygdala, cerebellum, hippocampus and striatum of JS-treated rats. These results indicate that the synthesis and (or) metabolism of NE, DA, EPI and 5-HT, and the levels of ASP, GLU and GABA in rat brains were differentially regionally altered by JS, which may contribute to the central manifestations of JS treatment.
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Affiliation(s)
- Sue Yu
- National Research Institute of Chinese Medicine, Peitou, Taipei 112, Taiwan, ROC.
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Ludwiczuk A, Wolski T, Berbeć S. Chromatographic analysis of ginsenosides occurring in the roots of American ginseng (Panax quinquefoliumL.) and in Asian ginseng (Panax ginsengC.A. Mayer) preparations. JPC-J PLANAR CHROMAT 2002. [DOI: 10.1556/jpc.15.2002.2.12] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Jhoo WK, Shin EJ, Lee YH, Cheon MA, Oh KW, Kang SY, Lee C, Yi BC, Kim HC. Dual effects of dextromethorphan on cocaine-induced conditioned place preference in mice. Neurosci Lett 2000; 288:76-80. [PMID: 10869819 DOI: 10.1016/s0304-3940(00)01188-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Dextromethorphan (DM) at supra-antitussive doses might produce psychotomimetic effects in humans. In order to understand the underlying mechanisms responsible for the behavior induced by DM, we examined the effects of DM on cocaine-induced conditioned place preference (CPP) and locomotor pattern in mice, and Fos-related antigen immunoreactivity (FRA-IR) in the striatal complex (nucleus accumbens and striatum) of the mouse brain. The effects of DM (20 and 40 mg/kg, i.p.) on the CPP for 2.5, 5, 10, and 20 mg cocaine/kg, i.p. were assessed. Pretreatment with DM dose-dependently decreased the CPP for 20 mg cocaine/kg. Similarly, pretreatment with DM appeared to reduce the CPP for 10 mg cocaine/kg, but increase the CPP for 5 mg cocaine/kg. This finding was more pronounced for 2.5 mg cocaine/kg; DM significantly increased the CPP for 2.5 mg cocaine/kg in a dose-related manner. Furthermore, these results were correlated with alterations in the locomotor pattern (marginal activity) and FRA-IR in the striatal complex. Thus, our results suggest that DM exhibits a biphasic effect on the cocaine-induced CPP and locomotor pattern.
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Affiliation(s)
- W K Jhoo
- Section of Pharmacology and Toxicology, Department of Pharmacy, College of Pharmacy, Korea Institute of Drug Abuse, Kangwon National University, Chunchon, South Korea
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Williamson EM. Selected bibliography. Phytother Res 1999; 13:702-8. [PMID: 10594945 DOI: 10.1002/(sici)1099-1573(199912)13:8<702::aid-ptr595>3.0.co;2-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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