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Zhang YT, Tian W, Lu YS, Li ZM, Ren DD, Zhang Y, Sha JY, Huo XH, Li SS, Sun YS. American ginseng with different processing methods ameliorate immunosuppression induced by cyclophosphamide in mice via the MAPK signaling pathways. Front Immunol 2023; 14:1085456. [PMID: 37153583 PMCID: PMC10160487 DOI: 10.3389/fimmu.2023.1085456] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 04/10/2023] [Indexed: 05/09/2023] Open
Abstract
This study aimed to clarify the effects of two processed forms of American ginseng (Panax quinquefolius L.) on immunosuppression caused by cyclophosphamide (CTX) in mice. In the CTX-induced immunosuppressive model, mice were given either steamed American ginseng (American ginseng red, AGR) or raw American ginseng (American ginseng soft branch, AGS) by intragastric administration. Serum and spleen tissues were collected, and the pathological changes in mice spleens were observed by conventional HE staining. The expression levels of cytokines were detected by ELISA, and the apoptosis of splenic cells was determined by western blotting. The results showed that AGR and AGS could relieve CTX-induced immunosuppression through the enhanced immune organ index, improved cell-mediated immune response, increased serum levels of cytokines (TNF-α, IFN-γ, and IL-2) and immunoglobulins (IgG, IgA, and IgM), as well as macrophage activities including carbon clearance and phagocytic index. AGR and AGS downregulated the expression of BAX and elevated the expression of Bcl-2, p-P38, p-JNK, and p-ERK in the spleens of CTX-injected animals. Compared to AGS, AGR significantly improved the number of CD4+CD8-T lymphocytes, the spleen index, and serum levels of IgA, IgG, TNF-α, and IFN-γ. The expression of the ERK/MAPK pathway was markedly increased. These findings support the hypothesis that AGR and AGS are effective immunomodulatory agents capable of preventing immune system hypofunction. Future research may investigate the exact mechanism to rule out any unforeseen effects of AGR and AGS.
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Affiliation(s)
- Yan-Ting Zhang
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Wei Tian
- Institute of Cash Crops, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang, China
| | - Yu-Shun Lu
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Zhi-Man Li
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Duo-Duo Ren
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Yue Zhang
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Ji-Yue Sha
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Xiao-Hui Huo
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
| | - Shan-Shan Li
- Institute of Biological and Pharmaceutical Engineering, Jilin Agricultural Science and Technology University, Jilin, China
- *Correspondence: Shan-Shan Li, ; Yin-Shi Sun,
| | - Yin-Shi Sun
- Institute of Special Animal and Plant Sciences, China Academy of Agricultural Sciences, Changchun, China
- *Correspondence: Shan-Shan Li, ; Yin-Shi Sun,
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Salama A, Mansour D, Hegazy R. The cardio and renoprotective role of ginseng against epinephrine-induced myocardial infarction in rats: Involvement of angiotensin II type 1 receptor/protein kinase C. Toxicol Rep 2021; 8:908-919. [PMID: 33996504 PMCID: PMC8099916 DOI: 10.1016/j.toxrep.2021.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/26/2021] [Accepted: 04/16/2021] [Indexed: 11/30/2022] Open
Abstract
Epinephrine induced MI with renal complication through Nrf2/NF-κB imbalance and PKC/AT1R. Ginseng abolished ECG changes induced by epinephrine and stimulated Nrf2. Ginseng reduced upregulation of PKC, NF-κB, and AT1R induced by epinephrine. Ginseng inhibited iNOS and corrected renal disorder in epinephrine model of MI.
The expression of angiotensin II type 1 receptor (AT1 receptor)/protein kinase C (PKC) in heart tissues has a vital role in myocardial infarction (MI). The current work aimed to clarify the renal complication enhanced by MI following epinephrine injection via AT1 receptor/ PKC expression; in addition, the impact of ginseng extract on epinephrine-induced MI and its renal complication was assessed. Adult male albino Wistar rats were pretreated orally with ginseng extract (200 & 400 mg/kg/day) for 14 days, then two successive doses of epinephrine injection (100 mg/kg, i.p.). Epinephrine evoked electrocardiographic (ECG) and renal changes accompanied with a significant increase in heart and kidney contents of malodialdehyde (MDA), nitric oxide (NO), protein kinase C (PKC), heart contents of nuclear factor-kabba B (NF-κB) and angiotensin 1receptor (AT1R), as well as a decrease in heart and kidney reduced glutathione (GSH) and nuclear factor-erythroid-related factor 2 (Nrf2) contents. In histopathological investigations epinephrine exhibited deleterious heart changes in the form of acute MI with the presence of necrosis of cardiomyocytes with iNOS expression and produced glomerulus and renal tubules degeneration. Pretreatment of rats with ginseng extract in both doses significantly corrected epinephrine-induced heart and renal changes. The current work revealed that epinephrine-induced MI associated with aggravated renal complication and ginseng extract has cardio and reno protective role against this as it reduces infarct size, preserves cardiac and renal tissues and functions through activating Nrf2 and down-regulating NF-κB, PKC, AT1R and iNOS.
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Affiliation(s)
- Abeer Salama
- Pharmacology Department, Medical Division, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), 12622 Dokki, Cairo, Egypt
| | - Dina Mansour
- Pharmacology Department, Medical Division, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), 12622 Dokki, Cairo, Egypt
| | - Rehab Hegazy
- Pharmacology Department, Medical Division, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), 12622 Dokki, Cairo, Egypt
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Tang X, Gan XT, Jong CJ, Rajapurohitam V, Karmazyn M. Inhibition of angiotensin II-induced hypertrophy and cardiac dysfunction by North American ginseng ( Panax quinquefolius). Can J Physiol Pharmacol 2021; 99:512-521. [PMID: 33091308 DOI: 10.1139/cjpp-2020-0480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We determined whether North American ginseng (Panax quinquefolius L.) mitigates the effect of angiotensin II on hypertrophy and heart failure. Angiotensin II (0.3 mg/kg) was administered to rats for 2 or 4 weeks in the presence or absence of ginseng pretreatment. The effect of ginseng (10 μg/mL) on angiotensin II (100 nM) - induced hypertrophy was also determined in neonatal rat ventricular myocytes. We also determined effects of ginseng on fatty acid and glucose oxidation by measuring gene and protein expression levels of key factors. Angiotensin II treatment for 2 and 4 weeks induced cardiac hypertrophy as evidenced by increased heart weights, as well as the upregulation of the hypertrophy-related fetal gene expression levels, with all effects being abolished by ginseng. Ginseng also reduced abnormalities in left ventricular function as well as the angiotensin II-induced increased blood pressure. In myocytes, ginseng abolished the hypertrophic response to angiotensin II as assessed by surface area and gene expression of molecular markers of hypertrophy. Ginseng modulated angiotensin II-induced abnormalities in gene expression and protein levels of CD36, CPT1M, Glut4, and PDK4 in vivo and in vitro. In conclusion, ginseng suppresses angiotensin II-induced cardiac hypertrophy and dysfunction which is related to normalization of fatty acid and glucose oxidation.
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Affiliation(s)
- Xilan Tang
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
| | - Xiaohong Tracey Gan
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
| | - Chian Ju Jong
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
| | - Venkatesh Rajapurohitam
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
| | - Morris Karmazyn
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON N6A 5C1, Canada
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Irfan M, Kwak YS, Han CK, Hyun SH, Rhee MH. Adaptogenic effects of Panax ginseng on modulation of cardiovascular functions. J Ginseng Res 2020; 44:538-543. [PMID: 32617033 PMCID: PMC7322748 DOI: 10.1016/j.jgr.2020.03.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
Cardiovascular diseases are a rapidly growing epidemic with high morbidity and mortality. There is an urgent need to develop nutraceutical-based therapy with minimum side effects to reduce cardiovascular risk. Panax ginseng occupies a prominent status in herbal medicine for its various therapeutic effects against inflammation, allergy, diabetes, cardiovascular diseases, and even cancer, with positive, beneficial, and restorative effects. The active components found in most P. ginseng varieties are known to include ginsenosides, polysaccharides, peptides, alkaloids, polyacetylene, and phenolic compounds, which are considered to be the main pharmacologically active constituents in ginseng. P. ginseng is an adaptogen. That is, it supports living organisms to maintain optimal homeostasis by exerting effects that counteract physiological changes caused by physical, chemical, or biological stressors. P. ginseng possesses immunomodulatory (including both immunostimulatory and immunosuppressive), neuromodulatory, and cardioprotective effects; suppresses anxiety; and balances vascular tone. P. ginseng has an antihypertensive effect that has been explained by its vasorelaxant action, and paradoxically, it is also known to increase blood pressure by vasoconstriction and help maintain cardiovascular health. Here, we discuss the potential adaptogenic effects of P. ginseng on the cardiovascular system and outline a future research perspective in this area.
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Key Words
- AD, Alzheimer's disease
- APP, Amyloid precursor protein
- Adaptogen
- Akt, Protein kinase B
- Aβ, Amyloid-beta
- CVD, Cardiovascular disease
- Cardioprotective
- Ginsenoside
- NO, Nitric oxide
- PI3K, Phosphatidylinositol-3 kinase
- Panax ginseng
- Vascular endothelium
- cGMP, Cyclic guanosine 3′,5′-monophosphate
- eNOS, Endothelial nitric oxide synthase
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Affiliation(s)
- Muhammad Irfan
- Laboratory of Veterinary Physiology and Cell Signaling, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Yi-Seong Kwak
- R&D Headquarters, Korean Ginseng cooperation, Daejeon, Republic of Korea
| | - Chang-Kyun Han
- R&D Headquarters, Korean Ginseng cooperation, Daejeon, Republic of Korea
| | - Sun Hee Hyun
- R&D Headquarters, Korean Ginseng cooperation, Daejeon, Republic of Korea
| | - Man Hee Rhee
- Laboratory of Veterinary Physiology and Cell Signaling, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
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Sun ZH, Chen J, Song YQ, Dou TY, Zou LW, Hao DC, Liu HB, Ge GB, Yang L. Inhibition of human carboxylesterases by ginsenosides: structure-activity relationships and inhibitory mechanism. Chin Med 2019; 14:56. [PMID: 31889992 PMCID: PMC6915887 DOI: 10.1186/s13020-019-0279-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 12/07/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Human carboxylesterases (hCES) are key serine hydrolases responsible for the hydrolysis of a wide range of endogenous and xenobiotic esters. Although it has been reported that some ginsenosides can modulate the activities of various enzymes, the inhibitory effects of ginsenosides on hCES have not been well-investigated. METHODS In this study, more than 20 ginsenosides were collected and their inhibitory effects on hCES1A and hCES2A were assayed using the highly specific fluorescent probe substrates for each isoenzyme. Molecular docking simulations were also performed to investigate the interactions between ginsenosides and hCES. RESULTS Among all tested ginsenosides, Dammarenediol II (DM) and 20S-O-β-(d-glucosyl)-dammarenediol II (DMG) displayed potent inhibition against both hCES1A and hCES2A, while protopanaxadiol (PPD) and protopanaxatriol (PPT) exhibited strong inhibition on hCES2A and high selectivity over hCES1A. Introduction of O-glycosyl groups at the core skeleton decreased hCES inhibition activity, while the hydroxyl groups at different sites might also effect hCES inhibition. Inhibition kinetic analyses demonstrated that DM and DMG functioned as competitive inhibitors against hCES1A-mediated d-luciferin methyl ester (DME) hydrolysis. In contrast, DM, DMG, PPD and PPT inhibit hCES2A-mediated fluorescein diacetate (FD) hydrolysis via a mixed manner. CONCLUSION The structure-inhibition relationships of ginsenosides as hCES inhibitors was investigated for the first time. Our results revealed that DM and DMG were potent inhibitors against both hCES1A and hCES2A, while PPD and PPT were selective and strong inhibitors against hCES2A.
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Affiliation(s)
- Zhao-Hui Sun
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Jing Chen
- School of Life Science and Medicine, Dalian University of Technology, Panjin, 124221 China
| | - Yun-Qing Song
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Tong-Yi Dou
- School of Life Science and Medicine, Dalian University of Technology, Panjin, 124221 China
| | - Li-Wei Zou
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Da-Cheng Hao
- School of Environment and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028 China
| | - Hai-Bin Liu
- National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Liaocheng, 252201 China
| | - Guang-Bo Ge
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Ling Yang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
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Study on the Effect of Ginsenosides Rb on Blood of Tumor Mice. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5476076. [PMID: 31531357 PMCID: PMC6720054 DOI: 10.1155/2019/5476076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/05/2019] [Accepted: 07/08/2019] [Indexed: 01/10/2023]
Abstract
Objective The blood of cancer patients is in a state of hypercoagulability, easily leading to thrombosis. Anemia is also a complication of tumors. Anemia and thrombosis affect the treatment of tumor patients. Methods Ginsenosides Rb were extracted from the stems and leaves of American ginseng using water-saturated ethanol and ethyl acetate in silica gel column. Tumor mice model was established by injecting H22 hepatocellular carcinoma cells into the axilla of mice. Mice were randomly divided into 6 groups: normal control group, model control group, positive control group, low dose group (7 mg/kg), middle dose group (14 mg/kg), and high dose group (35 mg/kg). After 18 days, the blood was obtained by picking the eyeball of mice. The levels of red blood cells (RBC), hemoglobin (HGB), neutrophils/lymphocytes radio (NLR), platelets (PLT), platelet distribution width (PDW), fibrinogen (FIB), and D-Dimer (D-D) were measured and compared in each group of mice. Results The content of obtained ginsenosides Rb reached 90.05%. This extraction process was simple and reliable. Middle dose of ginsenosides Rb could significantly increase RBC and HGB levels (P<0.05). Moreover, ginsenosides Rb could significantly reduce NLR, PLT, PDW, FIB, and D-D (P<0.01). Conclusion ginsenosides Rb could significantly improve anaemia and hypercoagulation of blood in cancer mice. Ginsenosides Rb are a potential anticoagulant and antianemia drug in treating cancer.
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Akhter KF, Mumin MA, Lui EMK, Charpentier PA. Immunoengineering with Ginseng Polysaccharide Nanobiomaterials through Oral Administration in Mice. ACS Biomater Sci Eng 2019; 5:2916-2925. [DOI: 10.1021/acsbiomaterials.9b00348] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Chen LX, Qi YL, Qi Z, Gao K, Gong RZ, Shao ZJ, Liu SX, Li SS, Sun YS. A Comparative Study on the Effects of Different Parts of Panax ginseng on the Immune Activity of Cyclophosphamide-Induced Immunosuppressed Mice. Molecules 2019; 24:E1096. [PMID: 30897728 PMCID: PMC6470474 DOI: 10.3390/molecules24061096] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/10/2019] [Accepted: 03/16/2019] [Indexed: 01/07/2023] Open
Abstract
The objective of the present study was to compare the effects of the immunological activity of various parts (root/stem/leaf/flower/seed) of five-year-old ginseng on the immune system of immunosuppressive mice. Immunosuppression was induced by cyclophosphamide (CTX) in the mouse model, whereas levamisole hydrochloride tablet (LTH) was used for the positive control group. We found that ginseng root (GRT), ginseng leaf (GLF), and ginseng flower (GFR) could relieve immunosuppression by increased viability of NK cells, enhanced immune organ index, improved cell-mediated immune response, increased content of CD4⁺ and ratio of CD4⁺/CD8⁺, and recovery of macrophage function, including carbon clearance, phagocytic rate, and phagocytic index, in immunodeficient mice. However, ginseng stem (GSM) and ginseng seed (GSD) could only enhance the thymus indices, carbon clearance, splenocyte proliferation, NK cell activities, and the level of IL-4 in immunosuppressed mice. In CTX-injected mice, GRT and GFR remarkably increased the protein expression of Nrf2, HO-1, NQO1, SOD1, SOD2, and CAT in the spleen. As expected, oral administration of GRT and GFR markedly enhanced the production of cytokines, such as IL-1β, IL-4, IL-6, IFN-γ, and TNF-α, compared with the CTX-induced immunosuppressed mice, and GRT and GFR did this relatively better than GSM, GLF, and GSD. This study provides a theoretical basis for further study on different parts of ginseng.
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Affiliation(s)
- Li-Xue Chen
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Yu-Li Qi
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Zeng Qi
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China.
| | - Kun Gao
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Rui-Ze Gong
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
| | - Zi-Jun Shao
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Song-Xin Liu
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Shan-Shan Li
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
| | - Yin-Shi Sun
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
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Hubbard TD, Hsieh JH, Rider CV, Sipes NS, Sedykh A, Collins BJ, Auerbach SS, Xia M, Huang R, Walker NJ, DeVito MJ. Using Tox21 High-Throughput Screening Assays for the Evaluation of Botanical and Dietary Supplements. APPLIED IN VITRO TOXICOLOGY 2019; 5:10-25. [PMID: 30944845 PMCID: PMC6442399 DOI: 10.1089/aivt.2018.0020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Introduction: Recent nationwide surveys found that natural products, including botanical dietary supplements, are used by ∼18% of adults. In many cases, there is a paucity of toxicological data available for these substances to allow for confident evaluations of product safety. The National Toxicology Program (NTP) has received numerous nominations from the public and federal agencies to study the toxicological effects of botanical dietary supplements. The NTP sought to evaluate the utility of in vitro quantitative high-throughput screening (qHTS) assays for toxicological assessment of botanical and dietary supplements. Materials and Methods: In brief, concentration-response assessments of 90 test substances, including 13 distinct botanical species, and individual purported active constituents were evaluated using a subset of the Tox21 qHTS testing panel. The screen included 20 different endpoints that covered a broad range of biologically relevant signaling pathways to detect test article effects upon endocrine activity, nuclear receptor signaling, stress response signaling, genotoxicity, and cell death signaling. Results and Discussion: Botanical dietary supplement extracts induced measurable and diverse activity. Elevated biological activity profiles were observed following treatments with individual chemical constituents relative to their associated botanical extract. The overall distribution of activity was comparable to activities exhibited by compounds present in the Tox21 10K chemical library. Conclusion: Botanical supplements did not exhibit minimal or idiosyncratic activities that would preclude the use of qHTS platforms as a feasible method to screen this class of compounds. However, there are still many considerations and further development required when attempting to use in vitro qHTS methods to characterize the safety profile of botanical/dietary supplements.
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Affiliation(s)
- Troy D. Hubbard
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | | | - Cynthia V. Rider
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Nisha S. Sipes
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | | | - Bradley J. Collins
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Scott S. Auerbach
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Menghang Xia
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland
| | - Ruili Huang
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland
| | - Nigel J. Walker
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Michael J. DeVito
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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Liao D, Jia C, Sun P, Qi J, Li X. Quality evaluation of Panax quinquefolium from different cultivation regions based on their ginsenoside content and radioprotective effects on irradiated mice. Sci Rep 2019; 9:1079. [PMID: 30705366 PMCID: PMC6355895 DOI: 10.1038/s41598-018-37959-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 12/17/2018] [Indexed: 02/07/2023] Open
Abstract
Ginsenosides are one of major types of bioactive compounds in American ginseng (AG) and utilized to assess the quality of various AG samples. The contents of ginsenosides showed cultivation region-related variation, which is possibly associated with AG’s pharmacological effect difference. Therefore, to reveal the quality difference of AGs in different cultivation regions, AG samples from seven cultivation regions were evaluated via analyzing their contents of nine ginsenosides and the biochemical parameters in AG-treated irradiated mice. Pre-administration of AG decoctions could reversely modulate the irradiation-induced changes of antioxidant enzymatic activity, cytokine level and hormone level in irradiated mice, which demonstrated that AG had the radioprotective effects due to its antioxidative, immunomodulatory and anti-inflammatory properties. However, this radioprotection effect varied among different cultivation regions of AGs. Collectively, Beijing and Canada-cultivated AGs had the best radioprotection. Heilongjiang and Jilin-originated AGs had the similar pharmacological effects while USA, Shandong and Shaanxi-grown AGs had closer pharmacological effects. This biochemical measurements-based PCA and heatmap clustering of AGs from seven cultivation regions was nearly consistent with ginsencoside content- and the previous serum metabolome-based analyses. However, the pearson correlation analysis revealed that only Rb3 and Rd were significantly correlated with some of assayed biochemical parameters in irradiated mice pretreated with different cultivation regions of AG extracts.
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Affiliation(s)
- Dengqun Liao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China
| | - Chan Jia
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China
| | - Peng Sun
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China
| | - Jianjun Qi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China
| | - Xian'en Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China.
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Finding the bad actor: Challenges in identifying toxic constituents in botanical dietary supplements. Food Chem Toxicol 2018; 124:431-438. [PMID: 30582954 DOI: 10.1016/j.fct.2018.12.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 12/11/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022]
Abstract
Botanical-derived dietary supplements have widespread use in the general population. The complex and variable nature of botanical ingredients and reports of adverse responses have led to concern for negative human health impacts following consumption of these products. Toxicity testing of the vast number of available products, formulations, and combinations is not feasible due to the time and resource intensive nature of comprehensive testing. Methods are needed to assess the safety of a large number of products via more efficient frameworks. Identification of toxicologically-active constituents is one approach being used, with many advantages toward product regulation. Bioassay-guided fractionation (BGF) is the leading approach used to identify biologically-active constituents. Most BGF studies with botanicals focus on identifying pharmacologically-active constituents for drug discovery or botanical efficacy research. Here, we explore BGF in a toxicological context, drawing from both efficacy and poisonous plant research. Limitations of BGF, including loss of mixture activity and bias toward abundant constituents, and recent advancements in the field (e.g., biochemometrics) are discussed from a toxicological perspective. Identification of active constituents will allow better monitoring of market products for known toxicologically-active constituents, as well as surveying human exposure, two important steps to ensuring the safety of botanical dietary supplements.
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Shin MS, Song JH, Choi P, Lee JH, Kim SY, Shin KS, Ham J, Kang KS. Stimulation of Innate Immune Function by Panax ginseng after Heat Processing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4652-4659. [PMID: 29659255 DOI: 10.1021/acs.jafc.8b00152] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Panax ginseng Meyer has been used for the treatment of immune diseases and for strengthening the immune function. In this study, we evaluated the innate immune-stimulating functions and action mechanisms of white ginseng (WG) and heat-processed ginseng (HPG) in RAW264.7 cells. According to LC-MS analysis results, WG contained typical ginsenosides, such as Rb1, Rc, Rb2, Rd, and Rg1, whereas HPG contained Rg3, Rk1, and Rg5 as well as typical ginsenosides. HPG, not WG, enhanced NF-κB transcriptional activity, cytokine production (IL-6 and TNF-α), and MHC class I and II expression in RAW264.7 cells. In addition, HPG phosphorylated MAPKs and NF-kB pathways. In experiments with inhibitors, the ERK inhibitor completely suppressed the effect of HPG on IL-6 and TNF-α production. HPG-induced c-Jun activation was suppressed by an ERK inhibitor and partially suppressed by JNK, p38, and IκBα inhibitors. Collectively, these results suggested that HPG containing Rg3, Rg5, and Rk1 increased macrophage activation which was regulated by the ERK/c-Jun pathway in RAW264.7 cells.
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Affiliation(s)
- Myoung-Sook Shin
- College of Korean Medicine , Gachon University , Seongnam 13120 , Korea
| | - Ji Hoon Song
- Department of Medicine , University of Ulsan College of Medicine , Seoul 05505 , Korea
| | - Pilju Choi
- Institute of Natural Products , Korea Institute of Science and Technology (KIST) , Gangneung 210-340 , Korea
| | - Jong Hun Lee
- Department of Food Science and Biotechnology , College of Life Science, CHA University , Gyeonggi 443-742 , Korea
| | - Song-Yi Kim
- College of Korean Medicine , Gachon University , Seongnam 13120 , Korea
| | - Kwang-Soon Shin
- Department of Food Science and Biotechnology , Kyonggi University , Suwon 443-760 , Korea
| | - Jungyeob Ham
- Institute of Natural Products , Korea Institute of Science and Technology (KIST) , Gangneung 210-340 , Korea
| | - Ki Sung Kang
- College of Korean Medicine , Gachon University , Seongnam 13120 , Korea
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Murias JM, Jiang M, Dzialoszynski T, Noble EG. Effects of Ginseng Supplementation and Endurance-Exercise in the Artery-Specific Vascular Responsiveness of Diabetic and Sedentary Rats. Front Physiol 2018; 9:460. [PMID: 29780326 PMCID: PMC5946630 DOI: 10.3389/fphys.2018.00460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 04/13/2018] [Indexed: 11/17/2022] Open
Abstract
This study examined the effects of 12 weeks North-American ginseng supplementation, exercise training, and sedentary behavior on vascular responses in type I diabetic rats. The following hypotheses were tested: (1) ginseng supplementation would result in improved vascular responsiveness and sensitivity; (2) exercise training would result in further improvement in these vascular responses; (3) control rats with no access to exercise would show a depressed vascular response compared to control rats that were not exposed to a sedentary lifestyle. Groups: non-diabetic sedentary control (CS), sedentary diabetic (DS), sedentary diabetic with ginseng supplementation (DS+GS), diabetic with ginseng supplementation and high-intensity endurance exercise (D+GS+EX), and control not exposed to sedentary behavior (C). Diabetes was induced by streptozotocin. Arteries were excised, cleaned, and mounted onto a myography system. Percent vasorelaxation to acetylcholine (ACh) (10-8 M ACh to 10-4 M ACh) of the carotid artery was similar in CS (57 ± 31%), C (66 ± 35%), DS (58 ± 36%), D+GS+Ex (71 ± 37%), and DS+GS (64 ± 37%) (p > 0.05). Percent vasorelaxation of the aorta was smaller in CS (23 ± 17%) compared to C (46 ± 35%), DS (60 ± 40%), D+GS+Ex (64 ± 40%), and DS+GS (56 ± 39%) (p < 0.05), and smaller in C compared to D+GS+Ex (p < 0.05). In the femoral, the percent vasorelaxation was reduced in DS (18 ± 16%) compared to all the other conditions (CS, 43 ± 22%; C, 79 ± 28%; D+GS+Ex, 55 ± 27%; DS+GS, 45 ± 26%; p < 0.05), but larger in C compared to the other conditions (CS, DS, D+GS+Ex, DS+GS; p < 0.05). Diabetes and sedentary lifestyle have detrimental effects on vascular responses that are evident in the femoral arteries of the diabetic rats. Ginseng supplementation restored the loss of sensitivity, with no added vascular protection of exercise training.
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Affiliation(s)
- Juan M. Murias
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- *Correspondence: Juan M. Murias,
| | - Mao Jiang
- School of Kinesiology, University of Western Ontario, London, ON, Canada
| | | | - Earl G. Noble
- School of Kinesiology, University of Western Ontario, London, ON, Canada
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Akhter KF, Mumin MA, Lui EMK, Charpentier PA. Fabrication of fluorescent labeled ginseng polysaccharide nanoparticles for bioimaging and their immunomodulatory activity on macrophage cell lines. Int J Biol Macromol 2017; 109:254-262. [PMID: 29229245 DOI: 10.1016/j.ijbiomac.2017.12.050] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 11/30/2017] [Accepted: 12/07/2017] [Indexed: 12/20/2022]
Abstract
Polysaccharides are a major active component of American ginseng root showing various biological activities including anti-carcinogenic, anti-aging, immunostimulatory and antioxidant effects. Although their biological activity has been reported by several groups, no research has explored their cellular uptake and biodistribution, owing to the lack of suitable detection techniques in living cells. This work examines a novel, simple and efficient fluorescent labeling procedure of ginseng polysaccharides (PS), in order to examine their cellular distribution using confocal microscopy. This procedure utilized a one-pot strategy with fluorescein-5-thiosemicarbazide (FTSC) to introduce a thiosemicarbazide group onto the aldehyde group at the reducing saccharide end to form a stable amino derivative through reductive amination. This polysaccharide-FTSC derivative was then characterized by GPC, UV, FTIR, photoluminescence and fluorescence microscopy to confirm attachment and any structural changes. The results demonstrated that the labeled ginseng PS nanostructure showed high fluorescence with minimal changes in PS molecular weight. The labeled PS exhibited almost no cytotoxicity effect against tumor induced macrophage cell lines (RAW 264.7) while retaining high immunostimulating activity similar to the non-labeled ginseng PS. Therefore, the developed approach provides a convenient and highly efficient fluorescent labeling procedure for understanding the mechanism of ginseng PS uptake in macrophage cell lines.
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Affiliation(s)
- Kazi Farida Akhter
- Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Md Abdul Mumin
- Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Edmund M K Lui
- Physiology and Pharmacology, University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Paul A Charpentier
- Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada; Biomedical Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada.
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Singh RK, Lui E, Wright D, Taylor A, Bakovic M. Alcohol extract of North American ginseng (Panax quinquefolius) reduces fatty liver, dyslipidemia, and other complications of metabolic syndrome in a mouse model. Can J Physiol Pharmacol 2017; 95:1046-1057. [PMID: 28666094 DOI: 10.1139/cjpp-2016-0510] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We investigated whether North American ginseng (Panax quinquefolius) could reduce development of the metabolic syndrome phenotype in a mouse model (ETKO) of the disease. Young ETKO mice have no disease but similar to humans start to develop the fatty liver, hypertriglyceridemia, obesity, and insulin resistance at 25-30 weeks of age, and the disease continues to progress with ageing. ETKO mice were orally given an ethanol extract of ginseng roots at 4 and 32 weeks of age. Treatments with ginseng eliminated the ETKO fatty liver, reduced hepatic and intestinal lipoprotein secretion, and reduced the level of circulating lipids. Improvements by ginseng treatments were manifested as a reduction in the expression of genes involved in the regulation of fatty acid and triglyceride (fat) synthesis and secretion by the lipoproteins on one hand, and the stimulation of fatty acid oxidation and triglyceride degradation by lipolysis on the other hand. These processes altogether improved glucose, fatty acid, and triglyceride metabolism, reduced liver fat load, and reversed the progression of metabolic syndrome. These data confirm that treatments with North American ginseng could alleviate metabolic syndrome through the maintenance of a better balance between glucose and fatty acid metabolism, lipoprotein secretion, and energy homeostasis in disease-prone states.
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Affiliation(s)
- Ratnesh K Singh
- a Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Edmund Lui
- b Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON N6A 5C1, Canada
| | - David Wright
- a Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Adrian Taylor
- a Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Marica Bakovic
- a Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
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Chakrabarti S, Sen S, Lui E. Effect of ginseng therapy on diabetes and its chronic complications: lessons learned. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2017; 14:/j/jcim.2017.14.issue-4/jcim-2016-0166/jcim-2016-0166.xml. [PMID: 29345436 DOI: 10.1515/jcim-2016-0166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 04/11/2017] [Indexed: 11/15/2022]
Abstract
Ginseng played a significant role in the management of diabetes in China and in other Asian countries for a long period of time. It has a large number of pharmacological properties and is relatively free from adverse effects. As a part of Ontario Ginseng Research and Innovation Consortium, we investigated the effects of ginseng extract on diabetes and its complications. We demonstrated large number of beneficial effects of ginseng therapy and showed that these effects are possibly mediated through its antioxidant properties. Thus ginseng may lend itself as a relatively safe and inexpensive adjuvant treatment for diabetes and chronic diabetic complications.
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Qi B, Wang S, Wang Q, Zhang H, Bai XY, He HN, Sun WJ, Liu L, Zhao DQ. Characterization and immunostimulating effects on murine peritoneal macrophages of a novel protein isolated from Panax quinquefolius L. JOURNAL OF ETHNOPHARMACOLOGY 2016; 193:700-705. [PMID: 27742408 DOI: 10.1016/j.jep.2016.10.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 10/02/2016] [Accepted: 10/09/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Panax quinquefolius L. has been used as a proverbial tonic in oriental countries for hundreds of years. It is used as a traditional medicinal herb to nourish vitality. AIM OF THE STUDY The purpose of our study was to inquiry the activation effects on murine peritoneal macrophages of a novel protein separated from the roots of Panax quinquefolius L. MATERIALS AND METHODS In our work, a novel protein of the roots of American ginseng (AGNP) was separated and purified from the roots of Panax quinquefolius L. The characteristic was investigated with SDS-PAGE, high pressure gel filtration chromatography (HPGFC) and matrix-assisted laser desorption ionization/time-of-flight mass (MALDI-TOF-MS) spectrometry method. The method of neutral red was carried out to investigate the phagocytosis of peritoneal macrophages. And Griess method and colorimetry were executed to detect the level of nitric oxide and iNOS activity respectively. Tumor necrosis factor-α and interleukin-6 were analyzed by enzyme linked immunosorbent assay (ELISA). RESULTS Our results demonstrated that the subunit molecular weight of AGNP determined by SDS-PAGE was 15kD and the content of proteins determined by Bradford assay was 2.31mg/mL. The molecular weight of the AGNP was15, 114Da both of electrophoresis and MS purity. And the result of HPGFC showed that the molecular weight of AGNP was 31,086Da, Immunological studied indicated that AGNP could conspicuously increase phagocytosis of macrophages, facilitate the nitric oxide production, Tumor necrosis factor-α and interleukin-6 production. What is more, AGNP dose-dependently stimulated NO formation through the up-regulation of iNOS activity. CONCLUSIONS In conclusion, AGNP had good immunoregulatory effects supporting the traditional claims and may provide a valuable therapeutic strategy to promoting immune function and metabolism.
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Affiliation(s)
- Bin Qi
- College of Pharmacy,Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Shan Wang
- College of Pharmacy,Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Qiu Wang
- College of Pharmacy,Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - He Zhang
- The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, China
| | - Xue-Yuan Bai
- Center of Chinese Medicine and Bio-Engineering Research, Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Hui-Nan He
- College of Pharmacy,Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Wei-Jie Sun
- College of Pharmacy,Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Li Liu
- College of Pharmacy,Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Da-Qing Zhao
- Center of Chinese Medicine and Bio-Engineering Research, Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China.
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Belanger D, Calder MD, Gianetto-Berruti A, Lui EM, Watson AJ, Feyles V. Effects of American Ginseng on Preimplantation Development and Pregnancy in Mice. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 44:981-95. [DOI: 10.1142/s0192415x16500543] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In North America, a high proportion of pregnant women use herbal medications including North American ginseng. This medicinal plant contains high amounts of triterpene saponins (ginsenosides), which are the main bioactive compounds. It is important to assess ginseng’s impact on all reproductive functions to ensure the safety of pregnant women and fetuses. In this study, we defined the concentration-responsive effects of North American alcoholic and aqueous ginseng extracts on preimplantation development in vitro and on pregnancy and post-partum development in the mouse. Two-cell mouse embryos were cultured with 5 different concentrations of whole ginseng root extracts, or ginsenosides Rb1, Rg1 and Re alone, a combinatorial ginsenoside solution and a crude polysaccharide fraction solution. Embryonic development and recovery from each treatment was assessed. To investigate the in vivo effects of ginseng extracts, female mice were gavaged with 50[Formula: see text]mg/kg/day, 500[Formula: see text]mg/kg/day or 2000[Formula: see text]mg/kg/day of either extract (treatment) or water (sham) for 2 weeks prior to mating and throughout gestation. Gestation period, litter size, pup growth and pup sex ratio were evaluated. Oral ginseng consumption did not significantly affect fertility or pregnancy in the mouse. High doses of ginseng (2000[Formula: see text]mg/kg/day) decreased maternal weight gain. Direct treatment of preimplantation embryos in vitro demonstrated that ALC and AQ extract treatment reduced development in a concentration responsive manner, while only ALC extract effects were largely reversible. Treatments with individual or combinatorial ginsenosides, or the polysaccharide fraction solution alone did not impair preimplantation development, in vitro. In conclusion, maternal oral consumption of ginseng has little negative impact on pregnancy in the mouse, however, direct exposure to ginseng extract during mouse preimplantation development in vitro is detrimental.
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Affiliation(s)
- Danyka Belanger
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Children’s Health Research Institute-Lawson Health Research Institute, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Michele D. Calder
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Children’s Health Research Institute-Lawson Health Research Institute, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Alessandra Gianetto-Berruti
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Edmund M. Lui
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Andrew J. Watson
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Children’s Health Research Institute-Lawson Health Research Institute, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Valter Feyles
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
- Children’s Health Research Institute-Lawson Health Research Institute, The University of Western Ontario, London, Ontario, N6A 5C1, Canada
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North American ginseng inhibits myocardial NOX2-ERK1/2 signaling and tumor necrosis factor-α expression in endotoxemia. Pharmacol Res 2016; 111:217-225. [PMID: 27317946 DOI: 10.1016/j.phrs.2016.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 05/24/2016] [Accepted: 06/09/2016] [Indexed: 11/21/2022]
Abstract
Sepsis is a systemic inflammatory response to infection with a high mortality but has no specific treatment despite decades of research. North American (NA) ginseng (Panax quinquefolius) is a popular natural health product with anti-oxidant and anti-inflammatory properties. The aim of the present study was to investigate the effects of NA ginseng on pro-inflammatory cytokine expression and cardiac function in endotoxemia, a model of sepsis. Mice were challenged with lipopolysaccharide (LPS) to induce endotoxemia. Myocardial expression of tumor necrosis factor-alpha (TNF-α), a major pro-inflammatory cytokine that causes cardiac dysfunction, was upregulated in mice with endotoxemia, which was accompanied by increases in NOX2 expression, superoxide generation and ERK1/2 phosphorylation. Notably, pretreatment with NA ginseng aqueous extract (50mg/kg/day, oral gavage) for 5days significantly inhibited NOX2 expression, superoxide generation, ERK1/2 phosphorylation and TNF-α expression in the heart during endotoxemia. Importantly, cardiac function and survival in endotoxemic mice were significantly improved. Additionally, pretreatment with ginseng extract inhibited superoxide generation, ERK1/2 phosphorylation and TNF-α expression induced by LPS in cultured cardiomyocytes. We conclude that NA ginseng inhibits myocardial NOX2-ERK1/2-TNF-α signaling pathway and improves cardiac function in endotoxemia, suggesting that NA ginseng may have the potential in the prevention of clinical sepsis.
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Akhter KF, Mumin MA, Lui EK, Charpentier PA. Microfluidic Synthesis of Ginseng Polysaccharide Nanoparticles for Immunostimulating Action on Macrophage Cell Lines. ACS Biomater Sci Eng 2015; 2:96-103. [DOI: 10.1021/acsbiomaterials.5b00413] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazi Farida Akhter
- Chemical and Biochemical Engineering and ‡Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada N6A 5B9
| | - Md Abdul Mumin
- Chemical and Biochemical Engineering and ‡Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada N6A 5B9
| | - Edmond K. Lui
- Chemical and Biochemical Engineering and ‡Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada N6A 5B9
| | - Paul A. Charpentier
- Chemical and Biochemical Engineering and ‡Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada N6A 5B9
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21
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Yao Y, Xue P, Zhu Y, Gao Y, Ren G. Antioxidant and immunoregulatory activity of polysaccharides from adzuki beans (Vigna angularis). Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.05.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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22
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Wang L, Yao Y, Sang W, Yang X, Ren G. Structural features and immunostimulating effects of three acidic polysaccharides isolated from Panax quinquefolius. Int J Biol Macromol 2015; 80:77-86. [DOI: 10.1016/j.ijbiomac.2015.06.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 11/25/2022]
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Garbett J, Wilson SAF, Ralston JC, De Boer AA, Lui EMK, Wright DC, Mutch DM. North American ginseng influences adipocyte-macrophage crosstalk regulation of inflammatory gene expression. J Ginseng Res 2015; 40:141-50. [PMID: 27158235 PMCID: PMC4845049 DOI: 10.1016/j.jgr.2015.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/29/2015] [Accepted: 07/05/2015] [Indexed: 01/04/2023] Open
Abstract
Background Adipocyte–macrophage communication plays a critical role regulating white adipose tissue (WAT) inflammatory gene expression. Because WAT inflammation contributes to the development of metabolic diseases, there is significant interest in understanding how exogenous compounds regulate the adipocyte–macrophage crosstalk. An aqueous (AQ) extract of North American (NA) ginseng (Panax quinquefolius) was previously shown to have strong inflammo-regulatory properties in adipocytes. This study examined whether different ginseng extracts influence adipocyte–macrophage crosstalk, as well as WAT inflammatory gene expression. Methods The effects of AQ and ethanol (EtOH) ginseng extracts (5 μg/mL) on adipocyte and macrophage inflammatory gene expression were studied in 3T3-L1 and RAW264.7 cells, respectively, using real-time reverse transcription polymerase chain reaction. Adipose tissue organ culture was also used to examine the effects of ginseng extracts on epididymal WAT (EWAT) and inguinal subcutaneous WAT (SWAT) inflammatory gene expression. Results The AQ extract caused significant increases in the expression of common inflammatory genes (e.g., Mcp1, Ccl5, Tnf-α, Nos2) in both cell types. Culturing adipocytes in media from macrophages treated with the AQ extract, and vice versa, also induced inflammatory gene expression. Adipocyte Ppar-γ expression was reduced with the AQ extract. The AQ extract strongly induced inflammatory gene expression in EWAT, but not in SWAT. The EtOH extract had no effect on inflammatory gene expression in either both cell types or WAT. Conclusion These findings provide important new insights into the inflammo-regulatory role of NA ginseng in WAT.
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Affiliation(s)
- Jaime Garbett
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Sarah A F Wilson
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Jessica C Ralston
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Anna A De Boer
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Ed M K Lui
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - David C Wright
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - David M Mutch
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
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Estaki M, Noble EG. North American ginseng protects against muscle damage and reduces neutrophil infiltration after an acute bout of downhill running in rats. Appl Physiol Nutr Metab 2014; 40:116-21. [PMID: 25531801 DOI: 10.1139/apnm-2014-0331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Eccentric muscle contractions such as those experienced during downhill running are associated with inflammation, delayed-onset of muscle soreness, myofiber damage, and various functional deficits. North American ginseng (Panax quinquefolius L.) has been reported to possess anti-inflammatory properties and thus may offset some of this exercise-induced damage. Hence, we tested the hypothesis that intervention with North American ginseng would reduce eccentric exercise-induced muscle damage and inflammation. Male Wistar rats were fed (300 mg/(kg·day)(-1)) of either an alcohol (AL) or aqueous (AQ) extract of North American ginseng for 14 days before a single bout of downhill running and were compared with matching nonexercised (C) groups. Plasma creatine kinase levels were significantly reduced in both ginseng treated groups compared with the C group that received a water placebo (p < 0.002). Further, the AQ but not AL group also showed attenuated morphological signs of damage (hemotoxylin and eosin) as well as reduced levels of infiltrating neutrophils (HIS48) in the soleus muscle (p < 0.001). In summary, supplementation with an AQ but not AL extract of North American ginseng was able to reduce eccentric exercise-induced muscle damage and inflammation.
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Affiliation(s)
- Mehrbod Estaki
- a School of Kinesiology, The University of Western Ontario, London, ON N6A 3K7, Canada
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25
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Lakshmikuttyamma A, Sun Y, Lu B, Undieh AS, Shoyele SA. Stable and efficient transfection of siRNA for mutated KRAS silencing using novel hybrid nanoparticles. Mol Pharm 2014; 11:4415-24. [PMID: 25340957 DOI: 10.1021/mp500525p] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
siRNA is currently the most widely studied form of RNAi, and it has promising therapeutic potential not just in cancer but also in other diseases such as autoimmune and infectious diseases. However, efficient delivery of siRNA to target cells is being limited by lack of an effective delivery system that ensures efficient transfection into cells while protecting the encapsulated siRNA from nuclease. We hypothesized that a hybrid nanoparticle system composed of human IgG and poloxamer-188, a stealth polymer, will efficiently deliver mutated KRAS siRNA to A549 cells, leading to an efficient knockdown of mutated siRNA while protecting the siRNA from serum nuclease. We also hypothesized that the nanoparticles will not elicit an immunostimulatory effect in murine macrophages and also avoid clearance by macrophages. These nanoparticles were found to efficiently deliver siRNA to the cytoplasm and nuclease of A549 cells in a controlled and sustained manner while avoiding recycling by endosomes. An effective knockdown of mutated KRAS was achieved, which subsequently led to an increased sensitivity to erlotinib. These nanoparticles successfully avoided uptake by murine macrophages and reduced immune responses normally associated with siRNA/nanoparticle therapy. These results demonstrate that the novel hybrid nanoparticles could potentially serve as a platform for efficient delivery of siRNA to cells for stable gene knockdown.
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Affiliation(s)
- A Lakshmikuttyamma
- Department of Pharmaceutical Sciences, School of Pharmacy, and ‡Division of Molecular Radiation Biology, Department of Radiation Oncology, Thomas Jefferson University , Philadelphia, Pennsylvania 19107, United States
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Yao Y, Shi Z, Ren G. Antioxidant and immunoregulatory activity of polysaccharides from quinoa (Chenopodium quinoa Willd.). Int J Mol Sci 2014; 15:19307-18. [PMID: 25342323 PMCID: PMC4227275 DOI: 10.3390/ijms151019307] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 09/27/2014] [Accepted: 10/10/2014] [Indexed: 11/28/2022] Open
Abstract
The water-extractable (QWP) and the alkali-extractable (QAP) polysaccharides from quinoa (named QWP and QAP, respectively) and their four polysaccharide sub-fractions (QWP-1, QWP-2, QAP-1 and QAP-2), were isolated and purified by anion-exchange and gel filtration chromatography. QWP-1 and QWP-2 were composed of Rha, Ara, Gal and GalA. QAP-1 and QAP-2 were composed of Rha, Ara, Man, Gal and GalA. Antioxidant and immunoregulatory activities of the polysaccharides were evaluated. The results showed that QWP-1, QWP-2, QAP-1 and QAP-2 had significant antioxidant and immunoregulatory activities. The results suggest that QWP-1, QWP-2, QAP-1 and QAP-2 could be used as potential antioxidants and immunomodulators.
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Affiliation(s)
- Yang Yao
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Zhenxing Shi
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Guixing Ren
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Stimulation and Suppression of Innate Immune Function by American Ginseng Polysaccharides: Biological Relevance and Identification of Bioactives. Pharm Res 2014; 32:876-97. [DOI: 10.1007/s11095-014-1503-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 08/21/2014] [Indexed: 10/24/2022]
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Samimi R, Salarian M, Xu WZ, Lui EMK, Charpentier PA. Encapsulation of Acetyl Ginsenoside Rb1 within Monodisperse Poly(dl-lactide-co-glycolide) Microspheres Using a Microfluidic Device. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501118u] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Raziye Samimi
- Department of Chemical and Biochemical Engineering, ‡Biomedical Engineering Graduate Program, §Department of Physiology and Pharmacology, and ∥The Ontario Ginseng Innovation & Research Consortium, University of Western Ontario, London, Ontario, Canada, N6A 5B9
| | - Mehrnaz Salarian
- Department of Chemical and Biochemical Engineering, ‡Biomedical Engineering Graduate Program, §Department of Physiology and Pharmacology, and ∥The Ontario Ginseng Innovation & Research Consortium, University of Western Ontario, London, Ontario, Canada, N6A 5B9
| | - William Z. Xu
- Department of Chemical and Biochemical Engineering, ‡Biomedical Engineering Graduate Program, §Department of Physiology and Pharmacology, and ∥The Ontario Ginseng Innovation & Research Consortium, University of Western Ontario, London, Ontario, Canada, N6A 5B9
| | - Edmund M. K. Lui
- Department of Chemical and Biochemical Engineering, ‡Biomedical Engineering Graduate Program, §Department of Physiology and Pharmacology, and ∥The Ontario Ginseng Innovation & Research Consortium, University of Western Ontario, London, Ontario, Canada, N6A 5B9
| | - Paul A. Charpentier
- Department of Chemical and Biochemical Engineering, ‡Biomedical Engineering Graduate Program, §Department of Physiology and Pharmacology, and ∥The Ontario Ginseng Innovation & Research Consortium, University of Western Ontario, London, Ontario, Canada, N6A 5B9
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Antioxidant and immunoregulatory activity of alkali-extractable polysaccharides from North American ginseng. Int J Biol Macromol 2014; 65:357-61. [DOI: 10.1016/j.ijbiomac.2014.01.046] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/18/2013] [Accepted: 01/18/2014] [Indexed: 02/07/2023]
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Jiang M, Murias JM, Chrones T, Sims SM, Lui E, Noble EG. American ginseng acutely regulates contractile function of rat heart. Front Pharmacol 2014; 5:43. [PMID: 24672484 PMCID: PMC3953749 DOI: 10.3389/fphar.2014.00043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 02/24/2014] [Indexed: 11/18/2022] Open
Abstract
Chronic ginseng treatments have been purported to improve cardiac performance. However reports of acute administration of ginseng on cardiovascular function remain controversial and potential mechanisms are not clear. In this study, we examined the effects of acute North American ginseng (Panax quinquefolius) administration on rat cardiac contractile function by using electrocardiogram (ECG), non-invasive blood pressure (BP) measurement, and Langendorff isolated, spontaneously beating, perfused heart measurements (LP). Eight-week old male Sprague–Dawley rats (n = 8 per group) were gavaged with a single dose of water-soluble American ginseng at 300 mg/kg body weight. Heart rate (HR) and BP were measured prior to and at 1 and 24 h after gavaging (ECG and BP). Additional groups were used for each time point for Langendorff measurements. HR was significantly decreased (ECG: 1 h: 6 ± 0.2%, 24 h: 8 ± 0.3%; BP: 1 h: 8.8 ± 0.2%, 24 h: 13 ± 0.4% and LP: 1 h: 22 ± 0.4%, 24 h: 19 ± 0.4%) in rats treated with water-soluble ginseng compared with pre or control measures. An initial marked decrease in left ventricular developed pressure was observed in LP hearts but BP changes were not observed in BP group. A direct inhibitory effect of North American ginseng was observed on cardiac contractile function in LP rats and on fluorescence measurement of intracellular calcium transient in freshly isolated cardiac myocytes when exposed to ginseng (1 and 10 μg/ml). Collectively these data present evidence of depressed cardiac contractile function by acute administration of North American ginseng in rat. This acute reduction in cardiac contractile function appears to be intrinsic to the myocardium.
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Affiliation(s)
- Mao Jiang
- School of Kinesiology, Faculty of Health Sciences, Western University London, ON, Canada ; Ontario Ginseng Innovation and Research Consortium London, ON, Canada
| | - Juan M Murias
- School of Kinesiology, Faculty of Health Sciences, Western University London, ON, Canada
| | - Tom Chrones
- Department of Physiology and Pharmacology, Western University London, ON, Canada
| | - Stephen M Sims
- Department of Physiology and Pharmacology, Western University London, ON, Canada
| | - Edmund Lui
- Ontario Ginseng Innovation and Research Consortium London, ON, Canada ; Department of Physiology and Pharmacology, Western University London, ON, Canada
| | - Earl G Noble
- School of Kinesiology, Faculty of Health Sciences, Western University London, ON, Canada ; Ontario Ginseng Innovation and Research Consortium London, ON, Canada
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31
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Sen S, Querques MA, Chakrabarti S. North American Ginseng (Panax quinquefolius) prevents hyperglycemia and associated pancreatic abnormalities in diabetes. J Med Food 2014; 16:587-92. [PMID: 23875898 DOI: 10.1089/jmf.2012.0192] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
North American ginseng (NAG) has received increasing attention as an alternative medicine for the treatment of diabetes. Extract of the NAG root has been reported to possess antidiabetic properties, but the underlying mechanisms for such effects have not been identified. Here we investigated the effects of NAG root extract on type 1 and 2 diabetes and the underlying mechanisms involved for such effects. Type 1 [C57BL/6 mice with streptozotocin (STZ)-induction] and type 2 (db/db) diabetic models were examined. Groups of diabetic mice (both type 1 and 2) were treated with alcoholic extract of the NAG root (200 mg/kg BW/day, oral gavage) for 1 or 2 months following onset of diabetes. Ginseng treatment significantly increased the body weight in type 1 diabetic animals in contrast to the type 2 model, where it caused diminution of body weight. Blood glucose and glycated hemoglobin levels diminished in the diabetic groups of both models with NAG treatment. Interestingly, plasma insulin and C-peptide levels were significantly increased in the STZ-diabetic mice, whereas they were reduced in the db/db mice following NAG treatment. Histological and morphometric analyses (islet/pancreas ratio) of the pancreas revealed an increase in the islet area following the treatment compared to both the untreated diabetic groups. These data indicate that NAG possibly causes regeneration of β-cells resulting in enhanced insulin secretion. On the other hand, in type 2 diabetes, the additional effects of NAG on body weight might have also resulted in improved glucose control.
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Affiliation(s)
- Subhrojit Sen
- Department of Pathology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
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32
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Park EY, Kim MH, Kim EH, Lee EK, Park IS, Yang DC, Jun HS. Efficacy Comparison of Korean Ginseng and American Ginseng on Body Temperature and Metabolic Parameters. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2014; 42:173-87. [DOI: 10.1142/s0192415x14500128] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Ginseng has beneficial effects in cancer, diabetes and aging. There are two main varieties of ginseng: Panax ginseng (Korean ginseng) and Panax quinquefolius (American ginseng). There are anecdotal reports that American ginseng helps reduce body temperature, whereas Korean ginseng improves blood circulation and increases body temperature; however, their respective effects on body temperature and metabolic parameters have not been studied. We investigated body temperature and metabolic parameters in mice using a metabolic cage. After administering ginseng extracts acutely (single dose of 1000 mg/kg) or chronically (200 mg/kg/day for four weeks), core body temperature, food intake, oxygen consumption and activity were measured, as well as serum levels of pyrogen-related factors and mRNA expression of metabolic genes. Acute treatment with American ginseng reduced body temperature compared with PBS-treated mice during the night; however, there was no significant effect of ginseng treatment on body temperature after four weeks of treatment. VO 2, VCO 2, food intake, activity and energy expenditure were unchanged after both acute and chronic ginseng treatment compared with PBS treatment. In acutely treated mice, serum thyroxin levels were reduced by red and American ginseng, and the serum prostaglandin E2 level was reduced by American ginseng. In chronically treated mice, red and white ginseng reduced thyroxin levels. We conclude that Korean ginseng does not stimulate metabolism in mice, whereas a high dose of American ginseng may reduce night-time body temperature and pyrogen-related factors.
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Affiliation(s)
- Eun-Young Park
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon, Korea
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
| | - Mi-Hwi Kim
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon, Korea
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
| | - Eung-Hwi Kim
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon, Korea
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
| | - Eun-Kyu Lee
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon, Korea
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
| | - In-Sun Park
- Department of Pathology, Inha University Hospital, Inha University School of Medicine, Incheon, Korea
| | - Duck-Choon Yang
- Korea Ginseng Center for Most Valuable Products and Ginseng Genetic Resource Bank, Kyung Hee University, Korea
| | - Hee-Sook Jun
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon, Korea
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
- Gachon Medical Research Institute, Gil Hospital, Incheon, Korea
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33
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Wang L, Yang X, Yu X, Yao Y, Ren G. Evaluation of antibacterial and anti-inflammatory activities of less polar ginsenosides produced from polar ginsenosides by heat-transformation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12274-12282. [PMID: 24289140 DOI: 10.1021/jf404461q] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Ginsenosides are the major active constituents in both white and red American ginseng (AG), and their pharmacological effects on central nervous, cardiovascular, and endocrine systems have been well elucidated. However, the anti-Propionibacterium acnes (P. acnes) activity of them is still unknown. In this study, 5 ginsenosides enriched fractions were obtained from the total ginsenosides extract of AG roots (TAG) by resin adsorption and heat-transformation. Resin purification decreased the total polyphenol (TP) content in the fractions. However, heat treatment increased the TP content and induced extensive conversion of the polar ginsenosides (Rg1, Re, Rb1, Rc, Rb2, Rd, and Gyp XVII) to less polar compounds (Rg2, Rg3, Rg6/F4, Rs3, and Rg5/Rk1). Only the heat-treated fraction from 65% methanol elution of the HP-20 column (HPHF) showed antibacterial activity against P. acnes (ATCC11827, MIC, 128 μg/mL; ATCC6919 MIC, 64 μg/mL), S. epidermidis (MIC, 4100 μg/mL) and S. aureus (MIC, 15000 μg/mL). In the anti-inflammatory activity assay, 10 μg/mL of HPHF significantly (P < 0.05) inhibited NO production in LPS-stimulated RAW264.7 cells. These results suggest that less polar ginsenosides enriched fraction HPHF obtained from AG might be useful to develop new types of antibacterial substances and new skin care cosmetics for acne prevention and therapy.
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Affiliation(s)
- Lijun Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences , Beijing 100081, People's Republic of China
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Identification of immunomodulatory signatures induced by american ginseng in murine immune cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:972814. [PMID: 24319490 PMCID: PMC3844258 DOI: 10.1155/2013/972814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 09/23/2013] [Accepted: 10/01/2013] [Indexed: 12/20/2022]
Abstract
Background. American ginseng (Panax quinquefolius, AG) has been used for more than 300 years. Some of its claimed benefits can be attributed to the immunomodulatory activities, whose molecular mechanisms are largely unknown. Methods. Murine splenic cells from adult male C57BL/6 (B6) mice were isolated and divided into 4 groups to mimic 4 basic pathophysiological states: (1) normal naïve; (2) normal activated; (3) deficient naïve; (4) deficient activated. Then, different AG extracts were added to all groups for 24 h incubation. MTT proliferation assays were performed to evaluate the phenotypic features of cells. Finally, microarray assays were carried out to identify differentially expressed genes associated with AG exposure. Real-time PCR was performed to validate the expression of selected genes. Results. Microarray data showed that most of gene expression changes were identified in the deficient naïve group, suggesting that the pathophysiological state has major impacts on transcriptomic changes associated with AG exposure. Specifically, this study revealed downregulation of interferon-γ signaling pathway in the deficient group of cells. Conclusion. Our study demonstrated that only specific groups of immune cells responded to AG intervention and immunocompromised cells were more likely regulated by AG treatment.
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Alipour M, Omri A, Lui EM, Suntres ZE. Co-administration of aqueous ginseng extract with tobramycin stimulates the pro-inflammatory response and promotes the killing of Pseudomonas aeruginosa in the lungs of infected rats. Can J Physiol Pharmacol 2013; 91:935-40. [DOI: 10.1139/cjpp-2013-0073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
North American ginseng is known to have immunomodulatory and antipseudomonal properties in vitro. In this study we investigated the effects of aqueous ginseng extract, either alone or in a combination with the antibiotic tobramycin, in an animal model of chronic Pseudomonas aeruginosa lung infection. The lungs of male rats (n = 5) were infected with P. aeruginosa (2 × 108 cfu/mL) in agar-beads by intratracheal instillation. Starting on day 7 post-infection, animals were treated daily for 3 consecutive days with saline, tobramycin (300 μg/kg body mass, intratracheal), and (or) ginseng (100 mg/kg body mass, subcutaneous); animals were sacrificed 24 h after the third drug treatment. Lung bacteria counts, cytokine levels in sera, and lung histopathology were examined. The treatment of infected animals with tobramycin [6.6 × 104 colony forming units (cfu)], ginseng (5.3 × 104 cfu), or tobramycin plus ginseng (2.0 × 103 cfu) lessened the lung infection compared with the control group (saline treated) (6.0 × 106 cfu). The levels of pro-inflammatory cytokines (IL-2, IL-4, IL-6, IL-12p70, IFN-γ, GM-CSF, TNF-α) in infected animals were significantly increased with co-treatment of ginseng plus tobramycin. These data suggest that co-administration of aqueous ginseng extract and tobramycin stimulated the pro-inflammatory response and promoted the killing of P. aeruginosa.
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Affiliation(s)
- Misagh Alipour
- Medical Sciences Division, Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada
- Biomolecular Sciences, Laurentian University, Sudbury, Ontario, Canada
- Ontario Ginseng Innovation and Research Consortium, London, Ontario, Canada
| | - Abdelwahab Omri
- Biomolecular Sciences, Laurentian University, Sudbury, Ontario, Canada
| | - Edmund M.K. Lui
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
- Ontario Ginseng Innovation and Research Consortium, London, Ontario, Canada
| | - Zacharias E. Suntres
- Medical Sciences Division, Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada
- Biomolecular Sciences, Laurentian University, Sudbury, Ontario, Canada
- Ontario Ginseng Innovation and Research Consortium, London, Ontario, Canada
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Han HJ, Kim HY, Choi JJ, Ahn SY, Lee SH, Oh KW, Kim SY. Effects of red ginseng extract on sleeping behaviors in human volunteers. JOURNAL OF ETHNOPHARMACOLOGY 2013; 149:597-599. [PMID: 23872254 DOI: 10.1016/j.jep.2013.07.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 07/01/2013] [Accepted: 07/01/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVENCE The ginseng root has been traditionally used as a sedative in oriental countries. However, the condition "ginseng abuse syndrome" (GAS), defined as hypertension, nervousness, sleeplessness, skin eruption, and morning diarrhea, was coined as a result of a study of people who had been using a variety of ginseng preparations. However, we reported that administration of RGE increased rapid eye movement (REM) and non rapid eye movement (NREM) sleep via GABAergic systems in animals. Therefore, this study was performed to investigate how red ginseng extract (RGE) affects sleeping behaviors in human volunteers. MATERIALS AND METHODS RGE (1500 mg) was orally administered to young male healthy volunteers (from 15 to 37 years old ages, n=15) three times a day for 7 days. Overnight polysomnographic (PSG) studies were performed two times, 1 day before and 7 days after RGE administration. We investigated differences in sleep architecture parameters such as total sleep time (TST), sleep efficacy (SE: total sleep time/time in bed), proportion of each sleep stage, and wakefulness after sleep onset (WASO) between baseline PSG and PSG after RGE administration. RESULTS Total wake time (TWT) was significantly reduced (P<0.05) and SE was increased (P<0.05), although slow wave sleep stage 1 (N1) was reduced (P<0.01) and non-rapid eye movement (REM) sleep was increased (P<0.03) after administration. CONCLUSION From these results, it is presumed that RGE intake would improve the quality of sleep, thus having beneficial effects on sleep disturbed subjects.
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Affiliation(s)
- Hyun Jeong Han
- College of Medicine and Myongji Hospital, Kwandong University, Gangreung 210-701, Republic of Korea
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Moey M, Gan XT, Huang CX, Rajapurohitam V, Martínez-Abundis E, Lui EM, Karmazyn M. Ginseng Reverses Established Cardiomyocyte Hypertrophy and Postmyocardial Infarction-Induced Hypertrophy and Heart Failure. Circ Heart Fail 2012; 5:504-14. [DOI: 10.1161/circheartfailure.112.967489] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
A major challenge in the treatment of heart failure is the ability to reverse already-established myocardial remodeling and ventricular dysfunction, with few available pharmacological agents prescribed for the management of heart failure having demonstrated successful reversal of the remodeling and hypertrophic processes. North American ginseng (
Panax quinquefolius
) has previously been shown to effectively prevent cardiomyocyte hypertrophy and heart failure. Here, we determined whether North American ginseng can reverse established cardiomyocyte hypertrophy in cultured myocytes as well as hypertrophy and left ventricular dysfunction in experimental heart failure secondary to coronary artery occlusion.
Methods and Results—
Ginseng was administered in drinking water (0.9 g/L) ad libitum to rats after 4 weeks of sustained coronary artery ligation when heart failure was established or to angiotensin II- (100 nmol/L), endothelin-1- (10 nmol/L), or phenylephrine- (10 µmol/L) induced hypertrophic cultured neonatal ventricular cardiomyocytes. Echocardiographic and catheter-based measurements of hemodynamic parameters 4 weeks after starting ginseng treatment (8 weeks postinfarction) revealed nearly complete reversibility of systolic and diastolic abnormalities. Similarly, ginseng administration to hypertrophic cardiomyocytes resulted in a complete reversal to a normal phenotype after 24 hours as determined by cell surface area and expression of molecular markers. The effects of ginseng both in vivo and in cultured cardiomyocytes were associated with reversal of calcineurin activation and reduced nuclear translocation of the transcription factor NFAT3 (nuclear factor of activated T cells 3) in cultured myocytes. Moreover, the beneficial effect of ginseng was associated with normalization in the gene expression of profibrotic markers, including collagen (I and III) and fibronectin.
Conclusions—
This study demonstrates a marked ability of ginseng to reverse cardiac hypertrophy, myocardial remodeling, and heart failure, which was associated with and likely mediated by reversal of calcineurin activation. Ginseng may offer a potentially effective approach to reverse the myocardial remodeling and heart failure processes, particularly in combination with other treatment modalities.
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Affiliation(s)
- Melissa Moey
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Xiaohong T. Gan
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Cathy Xiaoling Huang
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Venkatesh Rajapurohitam
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Eduardo Martínez-Abundis
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Edmund M.K. Lui
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Morris Karmazyn
- From the Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
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Lemmon HR, Sham J, Chau LA, Madrenas J. High molecular weight polysaccharides are key immunomodulators in North American ginseng extracts: characterization of the ginseng genetic signature in primary human immune cells. JOURNAL OF ETHNOPHARMACOLOGY 2012; 142:1-13. [PMID: 22521964 DOI: 10.1016/j.jep.2012.04.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Revised: 04/03/2012] [Accepted: 04/03/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ginseng (GS) has played a pivotal role in traditional Chinese medicine for thousands of years. Its use has become increasingly popular in North America, in part due to the many claims of its immune-enhancing properties. The immunopharmacology of the North American variety of GS and its extracts is needed to substantiate these claims. MATERIALS AND METHODS Human peripheral blood mononuclear cells were exposed to different North American GS extracts and microarray analysis was performed. The profile of cytokine response to GS extracts was established by ELISA, and Ingenuity Pathway Analysis was used to identify potential signaling pathways responsible for the transcriptional profile induced by GS. Fractionation of the aqueous and polysaccharide extracts was done to determine the molecular weight of the active immune modulatory ingredient(s). RESULTS We found that GS induced a transcriptional profile of immunomodulation characterized by a net T(h)1 immune response, with up-regulation of multiple pro-inflammatory cytokines (e.g., IFN-γ, IL-23A and IL-6) and down-regulation of TGF-β, IL-13 and the LPS co-receptor CD14. Ingenuity Pathway Analysis (IPA) revealed that the MAPK (ERK-1/2), PI3K, p38 and NF-κB cascades were key signaling pathways through which GS may trigger its immunomodulatory action. Furthermore, induction of such an immunomodulatory signature was recapitulated with the high molecular weight polysaccharides found in aqueous and polysaccharide GS extracts. CONCLUSIONS Based on our results, we conclude that high molecular weight polysaccharides in North American GS aqueous and polysaccharide extracts likely trigger the MAPK (ERK-1/2), PI3K, p38 and NF-κB signaling pathways in PBMC resulting in the induction of a T(h)1 transcriptional profile. Our results may assist in optimizing GS-mediated immunomodulation and focus the search for compounds in GS extracts with specific immunomodulatory activities.
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Affiliation(s)
- Holly R Lemmon
- The Centre for Human Immunology, Robarts Research Institute, The University of Western Ontario, London, Ont. N6A 5K8, Canada
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39
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Bowie LE, Roscoe WA, Lui EMK, Smith R, Karlik SJ. Effects of an aqueous extract of North American ginseng on MOG(35-55)-induced EAE in mice. Can J Physiol Pharmacol 2012; 90:933-9. [PMID: 22720838 DOI: 10.1139/y2012-092] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system, in which the release of reactive oxygen species by infiltrating immune cells contributes to demyelination. American ginseng ( Panax quinquefolius ) is a natural health product with numerous beneficial properties, including anti-inflammatory and anti-oxidant effects. The purpose of this study was to determine whether ginseng could influence the course of the disease experimental autoimmune encephalomyelitis (EAE), an animal model of MS. C57BL/6J mice were immunized with MOG((35-55)) peptide to induce EAE. After clinical disease appeared, mice received either oral doses of an aqueous extract of ginseng (150 mg/kg body mass), or the vehicle. Clinical symptoms were recorded, and spinal cord tissue samples were analyzed for pathological signs of disease. The aqueous extract of ginseng significantly decreased (i) clinical signs of EAE, (ii) levels of circulating TNF-α, and (iii) central nervous system immunoreactive iNOS and demyelination scores, without a change in other neuropathological measures. This study shows that an aqueous extract of ginseng may be able to attenuate certain signs of EAE, suggesting that it may be a useful adjuvant therapy for MS.
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Affiliation(s)
- Laura E Bowie
- Department of Pathology, University of Western Ontario, London, Canada
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40
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Sen S, Chen S, Wu Y, Feng B, Lui EK, Chakrabarti S. Preventive effects of North American Ginseng (Panax quinquefolius
) on Diabetic Retinopathy and Cardiomyopathy. Phytother Res 2012; 27:290-8. [DOI: 10.1002/ptr.4719] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 03/27/2012] [Accepted: 04/13/2012] [Indexed: 12/24/2022]
Affiliation(s)
- Subhrojit Sen
- Dept. of Pathology; University of Western Ontario; London Canada
- Ontario Ginseng Innovation and Research Consortium; University of Western Ontario; London Canada
| | - Shali Chen
- Dept. of Pathology; University of Western Ontario; London Canada
| | - Yuexiu Wu
- Dept. of Pathology; University of Western Ontario; London Canada
| | - Biao Feng
- Dept. of Pathology; University of Western Ontario; London Canada
| | - Edmund K Lui
- Dept. of Physiology & Pharmacology; University of Western Ontario; London Canada
- Ontario Ginseng Innovation and Research Consortium; University of Western Ontario; London Canada
| | - Subrata Chakrabarti
- Dept. of Pathology; University of Western Ontario; London Canada
- Ontario Ginseng Innovation and Research Consortium; University of Western Ontario; London Canada
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Sen S, Chen S, Feng B, Wu Y, Lui E, Chakrabarti S. Preventive effects of North American ginseng (Panax quinquefolium) on diabetic nephropathy. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2012; 19:494-505. [PMID: 22326549 DOI: 10.1016/j.phymed.2012.01.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PURPOSE Ginseng has been used as an herbal medicine and nutritional supplement in East Asia for thousands of years and gained popularity in the west because of its various pharmacological properties. Panax ginseng (Asian ginseng) and Panax quinquefolium (North American ginseng) both are reported to possess antihyperglycemic properties. The aim of the present study is to evaluate the preventive effects of North American ginseng on diabetic nephropathy (DN) and the underlying mechanisms of such effects. METHODS Models of both type 1 (C57BL/6 mice with STZ-induced diabetes) and type 2 diabetes (db/db mice) and age- and sex-matched controls were examined. Alcoholic ginseng root (200mg/kgbodywt, daily oral gavage) extract was administered to the diabetic mice (type 1 and type 2) for two or four months in order to evaluate its effects on DN. RESULTS Dysmetabolic state in the diabetic mice was significantly improved by ginseng treatment. In the kidneys of diabetic animals, ginseng significantly prevented oxidative stress and reduced the NF-κB (p65) levels. Diabetes-induced up-regulations of ECM proteins and vasoactive factors in the kidneys were significantly diminished by ginseng administration. Furthermore, albuminuria and mesangial expansion in the diabetic mice were prevented by ginseng therapy. CONCLUSION North American ginseng has preventive effects on DN and it works through a combination of mechanisms such as antihyperglycemic and antioxidant activities.
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Affiliation(s)
- Subhrojit Sen
- Department of Pathology, University of Western Ontario, Schulich School of Medicine and Dentistry, London, Ontario, Canada
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Senchina DS, Hallam JE, Cheney DJ. Multidisciplinary perspectives on mechanisms of activity of popular immune-enhancing herbal supplements used by athletes. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11515-012-1197-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Sen S, Chen S, Feng B, Wu Y, Lui E, Chakrabarti S. American ginseng (Panax quinquefolius) prevents glucose-induced oxidative stress and associated endothelial abnormalities. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2011; 18:1110-1117. [PMID: 21840692 DOI: 10.1016/j.phymed.2011.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 06/16/2011] [Accepted: 06/16/2011] [Indexed: 05/31/2023]
Abstract
PURPOSE Ginseng (Araliaceae), demonstrates widespread biological effects because of its purported antioxidant and other properties. The present study was undertaken to investigate the effects of American ginseng root extract on glucose-induced oxidative stress and associated oxidative damage to human umbilical vein endothelial cells (HUVECs). METHODS Following pretreatment with various concentrations of ginseng (alcoholic extract), HUVECs were incubated with various concentrations of d-glucose ranging from 5 to 25mmol/l for 24h. l-Glucose was used at a concentration of 25mmol/l as a control. RESULTS Glucose-induced oxidative stress detected by intracellular reactive oxygen species accumulation, superoxide anion generation and DNA damage in HUVECs were significantly prevented by ginseng. Treatment of HUVECs with ginseng further led to significant prevention of glucose-induced NF-κB activation. Glucose-induced increase in fibronectin (FN), EDB(+)FN (a splice variant of FN), endothelin-1 (ET-1) and vascular endothelial growth factor (VEGF) mRNAs and protein levels were also prevented by ginseng treatment. CONCLUSION These data indicate that American ginseng prevented glucose-induced damage in the HUVECs through its antioxidant properties.
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Affiliation(s)
- Subhrojit Sen
- Dept. of Pathology, University of Western Ontario, Schulich School of Medicine and Dentistry, London, Ontario, Canada
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Wu Y, Lu X, Xiang FL, Lui EMK, Feng Q. North American ginseng protects the heart from ischemia and reperfusion injury via upregulation of endothelial nitric oxide synthase. Pharmacol Res 2011; 64:195-202. [PMID: 21621617 DOI: 10.1016/j.phrs.2011.05.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 05/11/2011] [Accepted: 05/12/2011] [Indexed: 12/20/2022]
Abstract
Emerging evidence suggests ginseng has therapeutic potential in cardiovascular disease. The aim of this study was to investigate the role of endothelial nitric oxide synthase (eNOS) in the cardioprotective effects of ginseng during myocardial ischemia and reperfusion (I/R). Treatment with ginseng extract significantly increased Akt phosphorylation and eNOS protein levels in cultured neonatal cardiomyocytes. Upregulation of eNOS was blocked by LY294002, a PI3-kinase inhibitor, suggesting a PI3-kinase/Akt-dependent mechanism. To simulate I/R, cultured neonatal cardiomyocytes from eNOS(-/-) and wild-type (WT) mice were subjected to anoxia and reoxygenation (A/R). Ginseng treatment inhibited A/R-induced apoptosis in WT, but not in either eNOS(-/-) cardiomyocytes or WT cardiomyocytes treated with LY294002. To further study the cardioprotective effects of ginseng in vivo, WT and eNOS(-/-) mice were pretreated with ginseng extract (50mg/kg/day, oral gavage) for 7 days before they were subjected to myocardial I/R. Treatment with ginseng significantly increased Akt phosphorylation and eNOS protein levels in the myocardium. Furthermore, ginseng-induced myocardial eNOS expression was inhibited by LY294002. Strikingly, ginseng treatment significantly decreased infarct size and myocardial apoptosis following I/R in WT mice, but not in either eNOS(-/-) mice or WT mice treated with LY294002. We conclude that ginseng treatment protects the heart from I/R injury via upregulation of eNOS expression. Our study suggests that ginseng may serve as a potential therapeutic agent to limit myocardial I/R injury.
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Affiliation(s)
- Yan Wu
- Department of Pharmacology, School of Pharmaceutical Sciences, Central South University, Changsha, China
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