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Liu S, Wang M, Xiao H, Ye J, Cao L, Li W, Sun G. Advancements in research on the effects of panax notoginseng saponin constituents in ameliorating learning and memory disorders. Heliyon 2024; 10:e28581. [PMID: 38586351 PMCID: PMC10998096 DOI: 10.1016/j.heliyon.2024.e28581] [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: 09/01/2023] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 04/09/2024] Open
Abstract
Learning and memory disorder is a cluster of symptoms caused by neuronal aging and other diseases of the central nervous system (CNS). Panax notoginseng saponins (PNS) are a series of saponins derived from the natural active ingredients of traditional Chinese medicine (TCM) that have neuroprotective effects on the central nervous system. In this paper, we review the ameliorative effects and mechanisms of Panax notoginseng saponin-like components on learning and memory disorders to provide valuable references and insights for the development of new drugs for the treatment of learning and memory disorders. Our summary results suggest that Panax ginseng saponins have significant effects on improving learning and memory disorders, and these effects and potential mechanisms are mediated by their anti-inflammatory, anti-apoptotic, antioxidant, β-amyloid lowering, mitochondrial homeostasis in vivo, neuronal structure and function improving, neurogenesis promoting, neurotransmitter release regulating, and probiotic homeostasis in vivo activities. These findings suggest the potential of Panax notoginseng saponin-like constituents as drug candidates for improving learning and memory disorders.
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Affiliation(s)
- Shusen Liu
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- School of Pharmacy, Harbin University of Commerce, Harbin, 150076, China
| | - Min Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Haiyan Xiao
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Jingxue Ye
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Li Cao
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Wenlan Li
- School of Pharmacy, Harbin University of Commerce, Harbin, 150076, China
| | - Guibo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
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Li C, Lin Y, Lin R, Chen Z, Zhou Q, Luo C, Mo Z. Host miR-129-5p reverses effects of ginsenoside Rg1 on morphine reward possibly mediated by changes in B. vulgatus and serotonin metabolism in hippocampus. Gut Microbes 2023; 15:2254946. [PMID: 37698853 PMCID: PMC10498813 DOI: 10.1080/19490976.2023.2254946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/31/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023] Open
Abstract
Morphine addiction is closely associated with dysbiosis of the gut microbiota. miRNAs play a crucial role in regulating intestinal bacterial growth and are involved in the development of disease. Ginsenoside Rg1 exhibits an anti-addiction effect and significantly improves intestinal microbiota disorders. In pseudo-germfree mice, supplementation with Bacteroides vulgatus (B. vulgatus) synergistically enhanced Rg1 to alleviate morphine addiction. However, it is currently unknown the relationship between fecal miRNAs in morphine-exposed mice and their potential modulation of gut microbiome, as well as their role in mediating the resistance of ginsenoside Rg1 to drug addiction. Here, we studied the fecal miRNA abundance in mice treated with morphine to explore the different miRNAs expressed, their association with B. vulgatus and their role in the amelioration of morphine reward by ginsenoside Rg1. Our results indicated ginsenoside Rg1 attenuated the significant increase in miR-129-5p expression observed in the feces of morphine-treated mice. The miR-129-5p, specifically, inhibited the growth of B. vulgatus by modulating the transcript of the site-tag BVU_RS11835 and increased the levels of 5-hydroxytryptophan and indole-3-carboxaldehyde in vitro. Subsequently, we noticed that oral administration of synthetic miR-129-5p increased 5-HT levels in the hippocampus and inhibited the reversal effect of ginsenoside Rg1 both on the relative abundance of B. vulgatus in the feces and CPP effect induced by morphine exposure. In short, Ginsenoside Rg1 might play an indirect role in remodeling the B. vulgatus against morphine reward by suppressing miR-129-5p expression. These results highlight the role of miR-129-5p and B. vulgatus in morphine reward and the anti-morphine addiction of ginsenoside Rg1.
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Affiliation(s)
- Chan Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Yingbo Lin
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- Department of Pharmacy, Jiangmen Central Hospital, Jiangmen, China
| | - Rukun Lin
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhijie Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Qichun Zhou
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Chaohua Luo
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhixian Mo
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- Department of Chinese Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Feng H, Xue M, Deng H, Cheng S, Hu Y, Zhou C. Ginsenoside and Its Therapeutic Potential for Cognitive Impairment. Biomolecules 2022; 12:1310. [PMID: 36139149 PMCID: PMC9496100 DOI: 10.3390/biom12091310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Cognitive impairment (CI) is one of the major clinical features of many neurodegenerative diseases. It can be aging-related or even appear in non-central nerve system (CNS) diseases. CI has a wide spectrum that ranges from the cognitive complaint with normal screening tests to mild CI and, at its end, dementia. Ginsenosides, agents extracted from a key Chinese herbal medicine (ginseng), show great promise as a new therapeutic option for treating CI. This review covered both clinical trials and preclinical studies to summarize the possible mechanisms of how ginsenosides affect CI in different diseases. It shows that ginsenosides can modulate signaling pathways associated with oxidative stress, apoptosis, inflammation, synaptic plasticity, and neurogenesis. The involved signaling pathways mainly include the PI3K/Akt, CREB/BDNF, Keap1/Nrf2 signaling, and NF-κB/NLRP3 inflammasome pathways. We hope to provide a theoretical basis for the treatment of CI for related diseases by ginsenosides.
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Affiliation(s)
- Hui Feng
- School of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
| | - Mei Xue
- School of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
| | - Hao Deng
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300073, China
| | - Shiqi Cheng
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang 330008, China
| | - Yue Hu
- School of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
| | - Chunxiang Zhou
- School of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210024, China
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Fu YY, Cen JK, Song HL, Song SY, Zhang ZJ, Lu HJ. Ginsenoside Rh2 Ameliorates Neuropathic Pain by inhibition of the miRNA21-TLR8-MAPK axis. Mol Pain 2022; 18:17448069221126078. [PMID: 36039405 PMCID: PMC9478689 DOI: 10.1177/17448069221126078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Ginsenoside Rh2 is one of the major bioactive ginsenosides in Panax
ginseng. Although Rh2 is known to enhance immune cells activity for
treatment of cancer, its anti-inflammatory and neuroprotective effects have yet
to be determined. In this study, we investigated the effects of Rh2 on spared
nerve injury (SNI)-induced neuropathic pain and elucidated the potential
mechanisms. We found that various doses of Rh2 intrathecal injection
dose-dependently attenuated SNI-induced mechanical allodynia and thermal
hyperalgesia. Rh2 also inhibited microglia and astrocyte activation in the
spinal cord of a murine SNI model. Rh2 treatment inhibited SNI-induced increase
of proinflammatory cytokines, including tumor necrosis factor-α, interleukin
(IL)-1 and IL-6. Expression of miRNA-21, an endogenous ligand of Toll like
receptor (TLR)8 was also decreased. Rh2 treatment blocked the mitogen-activated
protein kinase (MAPK) signaling pathway by inhibiting of phosphorylated
extracellular signal-regulated kinase expression. Finally, intrathecal injection
of TLR8 agonist VTX-2337 reversed the analgesic effect of Rh2. These results
indicated that Rh2 relieved SNI-induced neuropathic pain via inhibiting the
miRNA-21-TLR8-MAPK signaling pathway, thus providing a potential application of
Rh2 in pain therapy.
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Affiliation(s)
- Yuan-Yuan Fu
- Institute of Pain Medicine and
Special Environmental Medicine, Nantong University, Jiangsu, China
- Department of Human Anatomy, School
of Medicine, Nantong University, Jiangsu, China
| | - Jian-Ke Cen
- Institute of Pain Medicine and
Special Environmental Medicine, Nantong University, Jiangsu, China
| | - Hao-Lin Song
- Department of Human Anatomy, School
of Medicine, Nantong University, Jiangsu, China
| | - Si-Yuan Song
- Institute of Pain Medicine and
Special Environmental Medicine, Nantong University, Jiangsu, China
| | - Zhi-Jun Zhang
- Department of Human Anatomy, School
of Medicine, Nantong University, Jiangsu, China
- Zhi-jun Zhang, Department of Human Anatomy,
School of Medicine, Nantong University, Jiangsu 226019, China,
| | - Huan-Jun Lu
- Institute of Pain Medicine and
Special Environmental Medicine, Nantong University, Jiangsu, China
- Huan-Jun Lu, Institute of Pain Medicine and
Special Environmental Medicine, Nantong University, Jiangsu 226019, China,
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Abdelghany AK, El-Nahass ES, Ibrahim MA, El-Kashlan AM, Emeash HH, Khalil F. Neuroprotective role of medicinal plant extracts evaluated in a scopolamine-induced rat model of Alzheimer's disease. Biomarkers 2022; 27:773-783. [PMID: 35950787 DOI: 10.1080/1354750x.2022.2112975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
BackgroundAlzheimer's disease is a debilitating neurological brain disease with memory impairment among the first signs. Scopolamine (SCO), a muscarinic receptor antagonist that disrupts cognition and memory acquisition, is considered a psychopharmacological AD model. We investigate the effectiveness of medicinal plants in mitigating the SCO-induced neurobehavioural damage in rats.Materials and MethodsAnimals were injected with Scopolamine hydrobromide trihydrate (2.2 mg/kg IP.) daily for 2 months. Each treatment group was administered one of four medicinal spice extracts (Nigella sativa, 400 mg/kg; rosemary, 200 mg/kg; sage, 600 mg/kg and ginseng;200 mg/kg 90 minutes after SCO injection. Animals were subjected to cognitive-behavioral tests (NOR, Y-maze, and MWM). After the experiment, we extracted the brains for histopathological examination and biochemical assessment for oxidative stress (levels of TT, CAT and TBARS) and gene expression of acetylcholinesterase and brain monoamines.ResultsAs expected, SCO treatment impaired memory and cognition, increased oxidative stress, decreased neurotransmitters, and caused severe neurodegenerative changes in the brain.ConclusionSurprisingly, these effects were measurably moderated by the administration of all four plant extracts, indicating a neuroprotective action that we suggest could alleviate AD disease manifestations.
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Affiliation(s)
- Asmaa K Abdelghany
- Animal and Poultry Management and Wealth Development Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - El-Shymaa El-Nahass
- Pathology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Marwa A Ibrahim
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University
| | - Akram M El-Kashlan
- Biochemistry Department, Faculty of Pharmacy, University of Sadat City, Monufia, Egypt
| | - H H Emeash
- Animal and Poultry Management and Wealth Development Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Fatma Khalil
- Animal and Poultry Management and Wealth Development Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
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Konrath EL, Arbo MD, Arbo BD, Hort MA, Elisabetsky E, Leal MB. Plants with Anti-Addictive Potential. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1308:185-215. [PMID: 33861445 DOI: 10.1007/978-3-030-64872-5_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Drug addiction is prevalent among individuals of modern society, being a major cause of disability and premature loss of life. Although the drug addiction have profound social, economical and health impact in the world population, its management remains a challenge as available pharmacological treatments remains ineffective for most people. The limited efficacy and adverse effects have led to a search for alternative therapies to treat drug addiction. In this context, natural products are an important source for new chemical substances with a potential therapeutic applicability. Therefore, this chapter will present data obtained after an extensive literature search regarding the use of medicinal plants as a pharmacological alternative for drug addiction treatment.
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Affiliation(s)
- Eduardo Luis Konrath
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Marcelo Dutra Arbo
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Bruno Dutra Arbo
- Departamento de Farmacologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Mariana Appel Hort
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, Rio Grande do Sul, Brazil
| | - Elaine Elisabetsky
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Mirna Bainy Leal
- Departamento de Farmacologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
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Ginsenoside Rg1 attenuates isoflurane/surgery-induced cognitive disorders and sirtuin 3 dysfunction. Biosci Rep 2020; 39:220750. [PMID: 31652451 PMCID: PMC6822512 DOI: 10.1042/bsr20190069] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 09/18/2019] [Accepted: 09/27/2019] [Indexed: 12/14/2022] Open
Abstract
Isoflurane/surgery (I/S) may induce neurocognitive disorders, but detailed mechanisms and appropriate treatment remain largely unknown. This experiment was designed to determine whether ginsenoside Rg1 could attenuate I/S-induced neurocognitive disorders and Sirtuin3 (Sirt3) dysfunction. C57BL/6J male mice received 1.4% isoflurane plus abdominal surgery for 2 h. Ginsenoside Rg1 10 mg/kg was intraperitoneally given for 8 days before surgery. Neurocognitive function was assessed by the Barnes Maze test. Levels of reactive oxygen species (ROS), oxygen consumption rate (OCR), mitochondrial membrane potential (MMP), expression and deacetylation activity of Sirt3 in the hippocampus tissues were measured. Results showed that I/S induced hippocampus-dependent learning and memory impairments, with increased ROS levels, and reduced OCR, MMP, and expression and deacetylation activity of Sirt3 in hippocampus tissues. Ginsenoside Rg1 treatment before I/S intervention significantly ameliorated learning and memory performance, reduced ROS levels and improved the OCR, MMP, expression and deacetylation activity of Sirt3. In conclusion, this experiment demonstrates that ginsenoside Rg1 treatment can attenuate I/S-induced neurocognitive disorders and Sirt3 dysfunction.
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Huang Y, Ma S, Wang Y, Yan R, Wang S, Liu N, Chen B, Chen J, Liu L. The Role of Traditional Chinese Herbal Medicines and Bioactive Ingredients on Ion Channels: A Brief Review and Prospect. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 18:257-265. [PMID: 30370864 DOI: 10.2174/1871527317666181026165400] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 06/20/2018] [Accepted: 06/20/2018] [Indexed: 12/18/2022]
Abstract
Traditional Chinese Medicines (TCMs), particularly the Chinese herbal medicines, are valuable sources of medicines and have been used for centuries. The term "TCMs" both represents to the single drug agent like Salvia miltiorrhiza, Ligusticum chuanxiong and Angelica sinensis, and those herbal formulas like Jingshu Keli, Wenxin Keli and Danzhen powder. In recent years, the researches of TCMs developed rapidly to understand the scientific basis of these herbs. In this review, we collect the studies of TCM and their containing bioactive compounds, and attempt to provide an overview for their regulatory effects on different ion channels including Ca2+, K+, Na+, Cl- channels and TRP, P2X receptors. The following conditions are used to limit the range of our review. (i) Only the herbal materials are included in this review and the animal- and mineral-original TCMs are excluded. (ii) The major discussions in this review focus on single TCM agent and the herbal formulas are only discussed for a little. (iii) Those most famous herbal medicines like Capsicum annuum (pepper), Curcuma longa (ginger) and Cannabis sativa (marijuana) are excluded. (iv) Only those TCM herbs with more than 5 research papers confirming their effects on ion channels are discussed in this review. Our review discusses recently available scientific evidences for TCMs and related bioactive compounds that have been reported with the modulatory effects on different ion channels, and thus provides a new ethnopharmacological approach to understand the usage of TCMs.
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Affiliation(s)
- Yian Huang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Shumei Ma
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Yan Wang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Renjie Yan
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Sheng Wang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Nan Liu
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Ben Chen
- Laboratory of Cell Asymmetry, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan.,Department of CNS Research, New Drug Research Division, Otsuka Pharmaceutical Co., Ltd., Tokushima 771-0192, Japan
| | - Jia Chen
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Li Liu
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China.,Shanghai Professional and Technical Service Center for Biological Material Drug-ability Evaluation, Shanghai 200437, China
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Ryoo N, Rahman MA, Hwang H, Ko SK, Nah SY, Kim HC, Rhim H. Ginsenoside Rk1 is a novel inhibitor of NMDA receptors in cultured rat hippocampal neurons. J Ginseng Res 2019; 44:490-495. [PMID: 32372871 PMCID: PMC7195591 DOI: 10.1016/j.jgr.2019.04.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 03/12/2019] [Accepted: 04/09/2019] [Indexed: 11/29/2022] Open
Abstract
Background Ginsenoside Rk1, a saponin component isolated from heat-processed Panax ginseng Meyer, has been implicated in the regulation of antitumor and anti-inflammatory activities. Although our previous studies have demonstrated that ginsenoside Rg3 significantly attenuated the activation of NMDA receptors (NMDARs) in hippocampal neurons, the effects of ginsenosides Rg5 and Rk1, which are derived from heat-mediated dehydration of ginsenoside Rg3, on neuronal NMDARs have not yet been elucidated. Methods We examined the regulation of NMDARs by ginsenosides Rg5 and Rk1 in cultured rat hippocampal neurons using fura-2–based calcium imaging and whole-cell patch-clamp recordings. Results The results from our investigation showed that ginsenosides Rg3 and Rg5 inhibited NMDARs with similar potencies. However, ginsenoside Rk1 inhibited NMDARs most effectively among the five compounds (Rg3, Rg5, Rk1, Rg5/Rk1 mixture, and protopanaxadiol) tested in cultured hippocampal neurons. Its inhibition is independent of the NMDA- and glycine-binding sites, and its action seems to involve in an interaction with the polyamine-binding site of the NMDAR channel complex. Conclusion Taken together, our results suggest that ginsenoside Rk1 might be a novel component contributable to the development of ginseng-based therapeutic treatments for neurodegenerative diseases.
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Affiliation(s)
- Nayeon Ryoo
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Md Ataur Rahman
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Hongik Hwang
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Sung Kwon Ko
- Department of Oriental Medical Food & Nutrition, Semyung University, Jecheon, Republic of Korea
| | - Seung-Yeol Nah
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hyoung-Chun Kim
- College of Pharmacy, Kangwon National University, Chuncheon, Republic of Korea
| | - Hyewhon Rhim
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul, Republic of Korea
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10
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Ginsenoside Rg1 Prevents Chemotherapy-Induced Cognitive Impairment: Associations with Microglia-Mediated Cytokines, Neuroinflammation, and Neuroplasticity. Mol Neurobiol 2019; 56:5626-5642. [DOI: 10.1007/s12035-019-1474-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 01/10/2019] [Indexed: 12/26/2022]
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Jakaria M, Haque ME, Kim J, Cho DY, Kim IS, Choi DK. Active ginseng components in cognitive impairment: Therapeutic potential and prospects for delivery and clinical study. Oncotarget 2018; 9:33601-33620. [PMID: 30323902 PMCID: PMC6173364 DOI: 10.18632/oncotarget.26035] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/10/2018] [Indexed: 12/11/2022] Open
Abstract
Cognitive impairment is a state that affects thinking, communication, understanding, and memory, and is very common in various neurological disorders. Among many factors, age-related cognitive decline is an important area in mental health research. Research to find therapeutic medications or supplements to treat cognitive deficits and maintain cognitive health has been ongoing. Ginseng and its active components may have played a role in treating chronic disorders. Numerous preclinical studies have confirmed that ginseng and its active components such as ginsenosides, gintonin, and compound K are pharmacologically efficacious in different models of and are linked to cognitive impairment. Among their several roles, they act as an anti-neuroinflammatory and help fight against oxidative stress and modulate the cholinergic signal. These roles may be involved in enhancing cognition and attenuating impairment. There have been some clinical studies on the activity of ginseng in cognitive impairment, but many ginseng species and active compounds remain to be investigated. In addition, new formulations of active ginseng components such as nanoparticles and liposomes could be used for preclinical and clinical models of cognitive impairment. Here, we discuss the therapeutic potential of active ginseng components in cognitive impairment and their chemistry and pharmacokinetics and consider prospects for their delivery and clinical study with respect to cognitive impairment.
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Affiliation(s)
- Md. Jakaria
- Department of Applied Life Science, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
| | - Md. Ezazul Haque
- Department of Applied Life Science, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
| | - Joonsoo Kim
- Department of Applied Life Science, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
| | - Duk-Yeon Cho
- Department of Applied Life Science, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
| | - In-Su Kim
- Department of Applied Life Science, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
- Department of Integrated Bioscience & Biotechnology, College of Biomedical and Health Science, and Research Institute of Inflammatory Disease, Konkuk University, Chungju 27478, Republic of Korea
| | - Dong-Kug Choi
- Department of Applied Life Science, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
- Department of Integrated Bioscience & Biotechnology, College of Biomedical and Health Science, and Research Institute of Inflammatory Disease, Konkuk University, Chungju 27478, Republic of Korea
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Ghaeminia M, Rajkumar R, Koh HL, Dawe GS, Tan CH. Ginsenoside Rg1 modulates medial prefrontal cortical firing and suppresses the hippocampo-medial prefrontal cortical long-term potentiation. J Ginseng Res 2017; 42:298-303. [PMID: 29989070 PMCID: PMC6035377 DOI: 10.1016/j.jgr.2017.03.010] [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: 12/22/2016] [Accepted: 03/23/2017] [Indexed: 01/29/2023] Open
Abstract
Background Panax ginseng is one of the most commonly used medicinal herbs worldwide for a variety of therapeutic properties including neurocognitive effects. Ginsenoside Rg1 is one of the most abundant active chemical constituents of this herb with known neuroprotective, anxiolytic, and cognition improving effects. Methods We investigated the effects of Rg1 on the medial prefrontal cortex (mPFC), a key brain region involved in cognition, information processing, working memory, and decision making. In this study, the effects of systemic administration of Rg1 (1 mg/kg, 3 mg/kg, or 10 mg/kg) on (1) spontaneous firing of the medial prefrontal cortical neurons and (2) long-term potentiation (LTP) in the hippocampal–medial prefrontal cortical (HP–mPFC) pathway were investigated in male Sprague–Dawley rats. Results The spontaneous neuronal activity of approximately 50% the recorded pyramidal cells in the mPFC was suppressed by Rg1. In addition, Rg1 attenuated LTP in the HP–mPFC pathway. These effects were not dose-dependent. Conclusion This report suggests that acute treatment of Rg1 impairs LTP in the HP–mPFC pathway, perhaps by suppressing the firing of a subset of mPFC neurons that may contribute to the neurocognitive effects of Rg1.
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Affiliation(s)
- Mehdy Ghaeminia
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
- Neurobiology and Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore
| | - Ramamoorthy Rajkumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
- Neurobiology and Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore
- Singapore Institute for Neurotechnology (SINAPSE), Singapore
| | - Hwee-Ling Koh
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore
| | - Gavin S. Dawe
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
- Neurobiology and Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore
- Singapore Institute for Neurotechnology (SINAPSE), Singapore
- Corresponding author. Gavin S. Dawe, Department of Pharmacology, Yong Loo Lin School of Medicine, #04-01Y, Level 4, MD3, 16 Medical Drive, National University of Singapore, 117600, Singapore.
| | - Chay Hoon Tan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Corresponding author. Chay Hoon Tan, Department of Pharmacology, Yong Loo Lin School of Medicine, #04-01S, Level 4, MD3, 16 Medical Drive, National University of Singapore, 117600, Singapore.
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Smith I, Williamson EM, Putnam S, Farrimond J, Whalley BJ. Effects and mechanisms of ginseng and ginsenosides on cognition. Nutr Rev 2014; 72:319-33. [DOI: 10.1111/nure.12099] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Imogen Smith
- School of Chemistry; Food and Nutritional Sciences and Pharmacy; University of Reading; Reading Berkshire UK
| | - Elizabeth M Williamson
- School of Chemistry; Food and Nutritional Sciences and Pharmacy; University of Reading; Reading Berkshire UK
| | | | | | - Benjamin J Whalley
- School of Chemistry; Food and Nutritional Sciences and Pharmacy; University of Reading; Reading Berkshire UK
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Chang XH, Liang LN, Zhan LB, Lu XG, Shi X, Qi X, Feng ZL, Wu MJ, Sui H, Zheng LP, Zhang FL, Sun J, Bai CC, Li N, Han GZ. The effect of Chinese Jinzhida recipe on the hippocampus in a rat model of diabetes-associated cognitive decline. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:161. [PMID: 23829668 PMCID: PMC3735391 DOI: 10.1186/1472-6882-13-161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 07/04/2013] [Indexed: 12/20/2022]
Abstract
Background To investigate the effects of treatment with Multi component Chinese Medicine Jinzhida (JZD) on behavioral deficits in diabetes-associated cognitive decline (DACD) rats and verify our hypothesis that JZD treatment improves cognitive function by suppressing the endoplasmic reticulum stress (ERS) and improving insulin signaling transduction in the rats’ hippocampus. Methods A rat model of type 2 diabetes mellitus (T2DM) was established using high fat diet and streptozotocin (30 mg/kg, ip). Insulin sensitivity was evaluated by the oral glucose tolerance test and the insulin tolerance test. After 7 weeks, the T2DM rats were treated with JZD. The step-down test and Morris water maze were used to evaluate behavior in T2DM rats after 5 weeks of treatment with JZD. Levels of phosphorylated proteins involved in the ERS and in insulin signaling transduction pathways were assessed by Western blot for T2DM rats’ hippocampus. Results Compared to healthy control rats, T2DM rats initially showed insulin resistance and had declines in acquisition and retrieval processes in the step-down test and in spatial memory in the Morris water maze after 12 weeks. Performance on both the step-down test and Morris water maze tasks improved after JZD treatment. In T2DM rats, the ERS was activated, and then inhibited the insulin signal transduction pathways through the Jun NH2-terminal kinases (JNK) mediated. JZD treatment suppressed the ERS, increased insulin signal transduction, and improved insulin resistance in the rats’ hippocampus. Conclusions Treatment with JZD improved cognitive function in the T2DM rat model. The possible mechanism for DACD was related with ERS inducing the insulin signal transduction dysfunction in T2DM rats’ hippocampus. The JZD could reduce ERS and improve insulin signal transduction and insulin resistance in T2DM rats’ hippocampus and as a result improved the cognitive function.
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Song XY, Hu JF, Chu SF, Zhang Z, Xu S, Yuan YH, Han N, Liu Y, Niu F, He X, Chen NH. Ginsenoside Rg1 attenuates okadaic acid induced spatial memory impairment by the GSK3β/tau signaling pathway and the Aβ formation prevention in rats. Eur J Pharmacol 2013; 710:29-38. [DOI: 10.1016/j.ejphar.2013.03.051] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 03/22/2013] [Accepted: 03/28/2013] [Indexed: 11/28/2022]
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Kim HJ, Kim P, Shin CY. A comprehensive review of the therapeutic and pharmacological effects of ginseng and ginsenosides in central nervous system. J Ginseng Res 2013; 37:8-29. [PMID: 23717153 PMCID: PMC3659622 DOI: 10.5142/jgr.2013.37.8] [Citation(s) in RCA: 167] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 07/30/2012] [Accepted: 07/31/2012] [Indexed: 12/14/2022] Open
Abstract
Ginseng is one of the most widely used herbal medicines in human. Central nervous system (CNS) diseases are most widely investigated diseases among all others in respect to the ginseng’s therapeutic effects. These include Alzheimer’s disease, Parkinson’s disease, cerebral ischemia, depression, and many other neurological disorders including neurodevelopmental disorders. Not only the various types of diseases but also the diverse array of target pathways or molecules ginseng exerts its effect on. These range, for example, from neuroprotection to the regulation of synaptic plasticity and from regulation of neuroinflammatory processes to the regulation of neurotransmitter release, too many to mention. In general, ginseng and even a single compound of ginsenoside produce its effects on multiple sites of action, which make it an ideal candidate to develop multi-target drugs. This is most important in CNS diseases where multiple of etiological and pathological targets working together to regulate the final pathophysiology of diseases. In this review, we tried to provide comprehensive information on the pharmacological and therapeutic effects of ginseng and ginsenosides on neurodegenerative and other neurological diseases. Side by side comparison of the therapeutic effects in various neurological disorders may widen our understanding of the therapeutic potential of ginseng in CNS diseases and the possibility to develop not only symptomatic drugs but also disease modifying reagents based on ginseng.
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Affiliation(s)
- Hee Jin Kim
- Department of Pharmacology, School of Medicine and Advanced Institute of Biomedical Science and Technology, Konkuk University, Seoul 143-701, Korea
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Zhao HH, Di J, Liu WS, Liu HL, Lai H, Lü YL. Involvement of GSK3 and PP2A in ginsenoside Rb1's attenuation of aluminum-induced tau hyperphosphorylation. Behav Brain Res 2013; 241:228-34. [DOI: 10.1016/j.bbr.2012.11.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 11/20/2012] [Accepted: 11/24/2012] [Indexed: 11/17/2022]
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Qi D, Qiao Y, Zhang X, Yu H, Cheng B, Qiao H. Aβ damages learning and memory in Alzheimer's disease rats with kidney-yang deficiency. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2012; 2012:132829. [PMID: 22645624 PMCID: PMC3356918 DOI: 10.1155/2012/132829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 02/18/2012] [Indexed: 11/21/2022]
Abstract
Previous studies demonstrated that Alzheimer's disease was considered as the consequence produced by deficiency of Kidney essence. However, the mechanism underlying the symptoms also remains elusive. Here we report that spatial learning and memory, escape, and swimming capacities were damaged significantly in Kidney-yang deficiency rats. Indeed, both hippocampal Aβ(40) and 42 increases in Kidney-yang deficiency contribute to the learning and memory impairments. Specifically, damage of synaptic plasticity is involved in the learning and memory impairment of Kidney-yang deficiency rats. We determined that the learning and memory damage in Kidney-yang deficiency due to synaptic plasticity impairment and increases of Aβ(40) and 42 was not caused via NMDA receptor internalization induced by Aβ increase. β-Adrenergic receptor agonist can rescue the impaired long-term potential (LTP) in Kidney-yang rats. Taken together, our results suggest that spatial learning and memory inhibited in Kidney-yang deficiency might be induced by Aβ increase and the decrease of β(2) receptor function in glia.
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Affiliation(s)
- Dongmei Qi
- Neuroscience Program, Shandong University of Traditional Chinese Medicine, Changqing University Park, Jinan 250355, China
| | - Yongfa Qiao
- Qingdao Haici Medical Group, 4 Renmin Road, Qingdao 266033, China
| | - Xin Zhang
- Neuroscience Program, Shandong University of Traditional Chinese Medicine, Changqing University Park, Jinan 250355, China
| | - Huijuan Yu
- Neuroscience Program, Shandong University of Traditional Chinese Medicine, Changqing University Park, Jinan 250355, China
| | - Bin Cheng
- Neuroscience Program, Shandong University of Traditional Chinese Medicine, Changqing University Park, Jinan 250355, China
| | - Haifa Qiao
- Neuroscience Program, Shandong University of Traditional Chinese Medicine, Changqing University Park, Jinan 250355, China
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, 16 Nanxiaojie, Dongzhimeinei, Beijing 100700, China
- Department of Biomedical Sciences, Florida State University College of Medicine, 1115 West Call Street, Tallahassee, FL 32306, USA
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Saxena G, Patro IK, Nath C. ICV STZ induced impairment in memory and neuronal mitochondrial function: A protective role of nicotinic receptor. Behav Brain Res 2011; 224:50-7. [PMID: 21620901 DOI: 10.1016/j.bbr.2011.04.039] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Revised: 04/20/2011] [Accepted: 04/25/2011] [Indexed: 10/18/2022]
Abstract
The present study was planned to evaluate the cholinergic influence on mitochondrial activity and neurodegeneration associated with impaired memory in intracerebroventricular (ICV) streptozotocin (STZ) treated rats. STZ (3mg/kg), administered ICV twice with an interval of 48h between the two doses, showed significant impairment in spatial memory tested by water maze test 14 days after first dose without altering blood glucose level and locomotor activity. Animals were sacrificed on 21st day of ICV administration. STZ significantly increased malondialdehyde (MDA), reactive oxygen species (ROS), Ca(2+) ion influx, caspase-3 activity and decreased glutathione (GSH) level. Acetylcholinesterase inhibitors tacrine and donepezil (5mg/kg, PO) pretreatment significantly prevented STZ induced memory deficit, oxidative stress, Ca(2+) influx and caspase-3 activity. Carbachol, a muscarinic cholinergic agonist (0.01mg/kg, SC) did not show any significant effect on ROS generation, Ca(2+) ion influx and caspase-3 activity. While nicotinic cholinergic agonist, nicotine, significantly attenuated ICV STZ induced mitochondrial dysfunction and caspase-3 activity. The results indicate that instead of muscarinic receptors nicotinic receptors may be involved in neuroprotection by maintaining mitochondrial functions.
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Affiliation(s)
- Gunjan Saxena
- Division of Pharmacology, Central Drug Research Institute (CSIR), Lucknow 226001, India
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Kovacic P, Somanathan R. Clinical physiology and mechanism of dizocilpine (MK-801): electron transfer, radicals, redox metabolites and bioactivity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2010; 3:13-22. [PMID: 20716924 PMCID: PMC2835885 DOI: 10.4161/oxim.3.1.10028] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Dizocilpine (MK-801), an extensively investigated drug possessing secondary amine and benzenoid functions, displays a wide array of biological properties, including anticonvulsant and anesthetic. There is scant discussion of biomechanism. A relevant, important finding is formation of oxidative metabolites in the hydroxylamine and phenolic categories. Analogy to cocaine metabolites suggests participation of redox entities, such as, hydroxylamine, nitroxide and nitrosonium, which can lead to electron transfer and radical formation. There is also similarity to metabolism by 3,3′-iminodipropionitrile and phencyclidine. Alternatively, the phenolic metabolites are well-known precursors of ET quinones. The review documents various physiological effects, mainly involving the central nervous system. Also of interest are the pro- and anti-oxidant properties. Considerable attention has been paid to MK-801 as an antagonist of the N-methyl-D-aspartate receptor in the glutamate category. This aspect is often associated with effects on the central nervous system. The review also provides recent literature dealing with MK-801/NMDA receptor in various areas of bioactivity. Studies were made of MK-801 involvement in working memory processing. Deficits in behavior were noted after administration of the drug. Treatment of mice with dizocilpine induced learning impairment. The influence of MK-801 on fear has been investigated. The substance is known to exert an analgesic effect in pain control. A number of reports deal with anesthetic properties.
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Affiliation(s)
- Peter Kovacic
- Department of Chemistry, San Diego State University, San Diego, CA, USA.
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Abstract
This paper is the 32nd consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2009 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration and thermoregulation (Section 16); and immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd., Flushing, NY 11367, USA.
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Choi RCY, Jiang Z, Xie HQ, Cheung AWH, Lau DTW, Fu Q, Dong TT, Chen J, Wang Z, Tsim KWK. Anti-oxidative effects of the biennial flower of Panax notoginseng against H2O2-induced cytotoxicity in cultured PC12 cells. Chin Med 2010; 5:38. [PMID: 21029415 PMCID: PMC2978211 DOI: 10.1186/1749-8546-5-38] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Accepted: 10/28/2010] [Indexed: 11/29/2022] Open
Abstract
Background Radix notoginseng is used in Chinese medicine to improve blood circulation and clotting; however, the pharmacological activities of other parts of Panax notoginseng have yet to be explored. The present study reports the anti-oxidative effects of various parts of Panax notoginseng. Methods Various parts of Panax notoginseng, including the biennial flower, stem-leaf, root-rhizome, fiber root and sideslip, were used to prepare extracts and analyzed for their anti-oxidation effects, namely suppressing xanthine oxidase activity, H2O2-induced cytotoxicity and H2O2-induced ROS formation. Results Among various parts of the herb (biennial flower, stem-leaf, root-rhizome, fiber root and sideslip), the water extract of the biennial flower showed the strongest effects in (i) inhibiting the enzymatic activity of xanthine oxidase and (ii) protecting neuronal PC12 cells against H2O2-induced cytotoxicity. Only the water extracts demonstrated such anti-oxidative effects while the ethanol extracts did not exert significant effects in suppressing xanthine oxidase and H2O2-induced neuronal cytotoxicity. Conclusions The present study demonstrates the biennial flower of Panax notoginseng to have neuroprotection effect on cultured neurons and the underlying protection mechanism may involve anti-oxidation.
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Affiliation(s)
- Roy Chi-Yan Choi
- Center for Chinese Medicine and Department of Biology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.
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Modulation of long-term potentiation in the hippocampus by pharmacological approach: A novel strategy for the development of cognitive enhancers. CHINESE SCIENCE BULLETIN-CHINESE 2010. [DOI: 10.1007/s11434-010-4069-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Liu ZJ, Zhao M, Zhang Y, Xue JF, Chen NH. Ginsenoside Rg1 promotes glutamate release via a calcium/calmodulin-dependent protein kinase II-dependent signaling pathway. Brain Res 2010; 1333:1-8. [PMID: 20381470 DOI: 10.1016/j.brainres.2010.03.096] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2009] [Revised: 03/02/2010] [Accepted: 03/28/2010] [Indexed: 01/10/2023]
Abstract
Ginseng is one of most extensively used traditional oriental medicines worldwide with beneficial efficacy on cognitive function disorders. Pharmacological researches on its active ingredient--ginsenoside Rg1 revealed that it can improve learning and memory potentially via modulating neurotransmission in the central nervous system, whereas the specific mechanism involved has not been elucidated yet. Our previous studies have indicated that ginsenoside Rb1 could enhance glutamate release via PKA-dependent signaling pathway whereas Rg1 could enhance glutamate release via PKA-independent signaling pathway. In this work we sought to determine the role of another key mediator in neurotransmitter release--calcium/calmodulin-dependent protein kinase II (CaMKII) in the mechanism of Rg1-enhanced glutamate release. Pre-treatment with CaMKII inhibitor KN93 blocked Rg1-induced glutamate release in primary hippocampal neurons. To investigate how CaMKII was involved in this process, the effect of Rg1 on CaMKII was further studied. Rg1 activated CaMKII and subsequently increased phosphorylation level of Synapsin I (Serine(603), a substrate site of CaMKII)--an abundant phosphoprotein essential for regulating neurotransmitter release, which could be blocked by pre-treatment with CaMKII inhibitor KN93. In conclusion, the present study suggests that Rg1 promotes glutamate release potentially via a CaMKII-dependent signaling pathway in which Synapsin I may potentially act as a downstream effector. Combined with our previous study on Rb1, these two studies altogether indicated that different ginsenosides may promote neurotransmitter release via differential signaling pathways.
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Affiliation(s)
- Zhi-Jun Liu
- Institute of Material Medica, Chinese Academy of Medical Sciences and Peking Union Medical College (Key Laboratory of Bioactive Substances and Resources Utilization, Ministry of Education), Beijing, People's Republic of China 100050
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Saxena G, Bharti S, Kamat PK, Sharma S, Nath C. Melatonin alleviates memory deficits and neuronal degeneration induced by intracerebroventricular administration of streptozotocin in rats. Pharmacol Biochem Behav 2009; 94:397-403. [PMID: 19808044 DOI: 10.1016/j.pbb.2009.09.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Revised: 09/18/2009] [Accepted: 09/25/2009] [Indexed: 11/18/2022]
Abstract
In the present study the effect of melatonin on intracerebroventricularly administered streptozotocin (STZ)-induced neurodegeneration was investigated in rats. STZ (3mg/kg), administered twice with an interval of 48 h between the two doses, showed impairment in spatial memory tested by water maze test after 14 days of 1st dose. Administration of melatonin (2.5, 5.0 and 10mg/kg, i.p.) was started 1h prior to 1st dose of STZ and continued up to 14 days. Glutathione and malondialdehyde were used as biochemical markers of oxidative stress in different brain regions. Histopathological changes were examined by using hematoxylin and eosin stain. STZ administration caused significant decrease in glutathione and increase in malondialdehyde as compared to control and artificial Cerebrospinal Fluid treated rats indicating oxidative stress. Brain sections of STZ-treated rats showed increased vacuoles in the periventricular cortical area, damaged periventricular cells and damaged cells in the hippocampal CA4 region as compared to control and artificial Cerebrospinal Fluid treated groups. Melatonin treatment significantly attenuated the effect of STZ-induced oxidative stress and histopathological changes. The results indicate that melatonin is effective in providing protection against memory deficit, oxidative stress and neuronal damage induced by STZ.
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Affiliation(s)
- Gunjan Saxena
- Division of Pharmacology, Central Drug Research Institute (CDRI), CSIR, Lucknow (U.P.) 226001, India
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Deng J, Lv XT, Wu Q, Huang XN. Ginsenoside Rg(1) inhibits rat left ventricular hypertrophy induced by abdominal aorta coarctation: involvement of calcineurin and mitogen-activated protein kinase signalings. Eur J Pharmacol 2009; 608:42-7. [PMID: 19347983 DOI: 10.1016/j.ejphar.2009.01.048] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Ginsenoside Rg(1) (Rg(1)), one of the active components of Panax ginseng, has been reported to inhibit proliferation of vascular smooth muscle cells induced by tumor necrosis factor-alpha. This study aims to investigate whether Rg(1) has protective effect on rat left ventricular hypertrophy and to probe its protective mechanisms. The rat left ventricular hypertrophy was induced by abdominal aorta coarctation and Rg(1) (3.75, 7.5 and 15 mg/kg/day) was given the day after surgery for 21 consecutive days. The left ventricular hypertrophy induced by abdominal aorta coarctation was evidenced by histopathology, electromicroscopy, and by determining the elevated left ventricular weight and the expression of atrial natriuretic peptide. Rg(1) significantly ameliorated left ventricular hypertrophy induced by abdominal aorta coarctation in a dose-dependent manner. To examine the mechanism of protection, the expressions of calcineurin, CnA (the catalytic subunit of calcineurin), extracellular signal-regulated kinase-1, and mitogen-activated protein (MAP) kinase phosphatase-1 were determined at the transcript and protein levels. The abdominal aorta coarctation induced increases in calcineurin, CnA, and extracellular signal-regulated kinase-1 expressions were suppressed, but the expression of MAP kinase phosphatase-1 was increased by Rg(1). These results demonstrate that Rg(1) alleviates left ventricular hypertrophy induced by abdominal aorta coarctation, and the protection appears to be due, at least in part, to its inhibitory effects on calcineurin and MAP kinase signaling pathways.
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Affiliation(s)
- Jiang Deng
- Department of Pharmacology, Zunyi Medical College, Zunyi, Guizhou, PR China
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van Praag H. Exercise and the brain: something to chew on. Trends Neurosci 2009; 32:283-90. [PMID: 19349082 DOI: 10.1016/j.tins.2008.12.007] [Citation(s) in RCA: 369] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2008] [Revised: 12/14/2008] [Accepted: 12/15/2008] [Indexed: 12/14/2022]
Abstract
Evidence is accumulating that exercise has profound benefits for brain function. Physical activity improves learning and memory in humans and animals. Moreover, an active lifestyle might prevent or delay loss of cognitive function with aging or neurodegenerative disease. Recent research indicates that the effects of exercise on the brain can be enhanced by concurrent consumption of natural products such as omega fatty acids or plant polyphenols. The potential synergy between diet and exercise could involve common cellular pathways important for neurogenesis, cell survival, synaptic plasticity and vascular function. Optimal maintenance of brain health might depend on exercise and intake of natural products.
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Affiliation(s)
- Henriette van Praag
- Neuroplasticity and Behavior Unit, Laboratory of Neurosciences, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
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