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Xu X, Qu Z, Qian H, Li Z, Sun X, Zhao X, Li H. Ginsenoside Rg1 ameliorates reproductive function injury in C57BL/6J mice induced by di-N-butyl-phthalate. ENVIRONMENTAL TOXICOLOGY 2021; 36:789-799. [PMID: 33331133 DOI: 10.1002/tox.23081] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/21/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
With the aggravation of environmental pollution, the incidence of infertility is increasing. Ginsenoside Rg1 is a monomer component extracted from Panax ginseng. It has been found that Ginsenoside Rg1 is able to prevent premature ovarian failure and delay testicular senescence. Therefore, we speculate Ginsenoside Rg1 may have great potential to prevent and treat infertility. The aim of this work is to explore whether Ginsenoside Rg1 plays a protective role in the dinbutyl phthalate (DBP)-induced reproductive function injury mice, and to elucidate the potential mechanism. C57BL/6J male mice were administered by DBP with or without Ginsenoside Rg1 treatment and serum, testis and epididymis were collected for further analysis. Sperm analysis, hematoxylin and eosin staining, and serum hormone detection indicated that Ginsenoside Rg1 treatment improved the sperm density and sperm motility, reduced the testicular tissue damage, increased the serum testosterone and luteinizing hormone levels, and decreased the serum follicle-stimulating hormone level in DBP-induced mice. Furthermore, Ginsenoside Rg1 treatment upregulated expression levels of spermatogenesis-related protein, Cx43, E-cadherin, p-PI3K, p-Akt, and mTOR in the mice treated by DBP, observed by using a immunohistochemistry assay, a real-time quantitative PCR assay, and a western blot analysis. The present study reveals that Ginsenoside Rg1 may exert anti-DBP-induced reproductive function injury in C57BL/6J mice. In addition, the protect role of Ginsenoside Rg1 in spermatogenesis may be associated with the regulation of reproductive hormones, upregulation of spermatogenic associated proteins expression, restoration of the gap junctions, and the activation of PI3K/Akt/mTOR signaling pathways.
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Affiliation(s)
- Xiaolei Xu
- School of Public Health, Beihua University, Jilin, China
| | - Zhenting Qu
- Department of Pediatrics, Jilin Combine Traditional Chinese and Western Hospital, Jilin, China
| | - Honghao Qian
- School of Public Health, Beihua University, Jilin, China
| | - Zhongming Li
- School of Public Health, Beihua University, Jilin, China
| | - Xiuling Sun
- School of Public Health, Beihua University, Jilin, China
| | - Xinrui Zhao
- Department of Iodine Deficiency Disorders, The Second Institue for Endemic Disease Control and Prevention of Jilin Province, Jilin, China
| | - Huan Li
- School of Public Health, Beihua University, Jilin, China
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Ginsenoside Rg1 activates ligand-independent estrogenic effects via rapid estrogen receptor signaling pathway. J Ginseng Res 2018; 43:527-538. [PMID: 31695561 PMCID: PMC6823751 DOI: 10.1016/j.jgr.2018.03.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 02/12/2018] [Accepted: 03/26/2018] [Indexed: 01/08/2023] Open
Abstract
Background Ginsenoside Rg1 was shown to exert ligand-independent activation of estrogen receptor (ER) via mitogen-activated protein kinase–mediated pathway. Our study aimed to delineate the mechanisms by which Rg1 activates the rapid ER signaling pathways. Methods ER-positive human breast cancer MCF-7 cells and ER-negative human embryonic kidney HEK293 cells were treated with Rg1 (10−12M, 10−8M), 17ß-estradiol (10−8M), or vehicle. Immunoprecipitation was conducted to investigate the interactions between signaling protein and ER in MCF-7 cells. To determine the roles of these signaling proteins in the actions of Rg1, small interfering RNA or their inhibitors were applied. Results Rg1 rapidly induced ERα translocation to plasma membrane via caveolin-1 and the formation of signaling complex involving linker protein (Shc), insulin-like growth factor-I receptor, modulator of nongenomic activity of ER (MNAR), ERα, and cellular nonreceptor tyrosine kinase (c-Src) in MCF-7 cells. The induction of extracellular signal-regulated protein kinase and mitogen-activated protein kinase kinase (MEK) phosphorylation in MCF-7 cells by Rg1 was suppressed by cotreatment with small interfering RNA against these signaling proteins. The stimulatory effects of Rg1 on MEK phosphorylation in these cells were suppressed by both PP2 (Src kinase inhibitor) and AG1478 [epidermal growth factor receptor (EGFR) inhibitor]. In addition, Rg1-induced estrogenic activities, EGFR and MEK phosphorylation in MCF-7 cells were abolished by cotreatment with G15 (G protein-coupled estrogen receptor-1 antagonist). The increase in intracellular cyclic AMP accumulation, but not Ca mobilization, in MCF-7 cells by Rg1 could be abolished by G15. Conclusion Ginsenoside Rg1 exerted estrogenic actions by rapidly inducing the formation of ER containing signalosome in MCF-7 cells. Additionally, Rg1 could activate EGFR and c-Src ER-independently and exert estrogenic effects via rapid activation of membrane-associated ER and G protein-coupled estrogen receptor.
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Kiyama R. Estrogenic terpenes and terpenoids: Pathways, functions and applications. Eur J Pharmacol 2017; 815:405-415. [PMID: 28970013 DOI: 10.1016/j.ejphar.2017.09.049] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/11/2017] [Accepted: 09/28/2017] [Indexed: 12/15/2022]
Abstract
Terpenes are made of the isoprene unit (C5), and along with their derivatives, terpenoids, they are widely distributed in plants as active ingredients involved in anti-inflammation, anti-carcinogenesis and neuroprotection. Estrogenic terpenes and terpenoids are an important category of phytoestrogens and have been used as traditional medicines. The comprehensive list of estrogenic terpenes and terpenoids includes hemi-, mono-, sesqui-, di-, tri-, tetra- and polyterpenes, their derivatives, and meroterpenes, along with the signaling pathways and cellular functions on which their estrogenicity is exerted. Signaling pathways are further classified as bidirectional or unidirectional, the latter being further divided into two types depending upon the presence of both ligands, or the absence of one or both ligands. Although estrogenic activity of terpenes and terpenoids was evaluated by ligand-binding assays, yeast two-hybrid assays, reporter-gene assays, transcription assays, protein assays, cell assays and animal testing, the mechanism of estrogenic activity is still not fully understood. Applications of estrogenic terpenes and terpenoids are categorized into cancer treatment and prevention, cardioprotection, endocrine toxicity/reproductive dysfunction, food/supplement/traditional medicine, immunology/inflammation, menopausal syndromes and neuroprotection, where their benefits are discussed based on their availability, stability and variations.
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Affiliation(s)
- Ryoiti Kiyama
- Faculty of Life Science, Kyushu Sangyo University, Fukuoka, Japan.
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Mou Z, Huang Q, Chu SF, Zhang MJ, Hu JF, Chen NH, Zhang JT. Antidepressive effects of ginsenoside Rg1 via regulation of HPA and HPG axis. Biomed Pharmacother 2017; 92:962-971. [PMID: 28618657 DOI: 10.1016/j.biopha.2017.05.119] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 05/13/2017] [Accepted: 05/24/2017] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Hypothalamic-pituitary-adrenal (HPA) axis hyperactivity is a well-established pathological feature of major depression, accompanied by the persistent increase of glucocorticoid level and the dysfunction of hypothalamic-pituitary-gonadal (HPG) axis. Ginsenoside Rg1 (Rg1) is one of the most active ingredients of Panax ginseng, which has various biological activity. OBJECTIVE This study aimed to investigate the antidepressive effects of Rg1 and elucidate its impact on neuroendocrine system. METHODS The antidepressive effects of Rg1 were first analysed in mice, and was further identified in the chronic-unpredictable-mild-stress (CUMS) model and the gonadectomized (GDX) model. The effects of Rg1 on depression-like behaviour were analysed by the forced swimming test (FST), tail suspension test (TST), sucrose preference test, and measurement of pentobarbital-induced sleep. The serum corticosterone and testosterone levels were detected by ELISA. The protein levels of glucocorticoid receptor (GR) and androgen receptor (AR) were analysed by western blot and immunohistochemistry analysis. RESULTS Rg1 significantly decreased the immobility time of mice in FST and TST. Furthermore, Rg1 alleviated anhedonia and hopelessness, decreased serum corticosterone level, and increased serum testosterone level, and the GR protein level in the PFC and hippocampus of the CUMS-treated rats. Moreover, Rg1 improved sleep disruption, down-regulated the serum corticosterone level, and increased AR protein level in the PFC of the GDX-treated mice. CONCLUSION Together, these studies suggest that Rg1 displayed antidepressant activity through the modulation of the HPA and the HPG axis. These findings provide new mechanism involved in the antidepressive effects of Rg1 and propose theoretical clues for clinical therapies.
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Affiliation(s)
- Zheng Mou
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Qian Huang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Feng Chu
- College of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
| | - Mei-Jin Zhang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jin-Feng Hu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Nai-Hong Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; College of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
| | - Jun-Tian Zhang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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Effect of the Interaction of Veratrum Nigrum with Panax Ginseng on Estrogenic Activity In Vivo and In Vitro. Sci Rep 2016; 6:26924. [PMID: 27229740 PMCID: PMC4882595 DOI: 10.1038/srep26924] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 05/10/2016] [Indexed: 01/06/2023] Open
Abstract
Panax ginseng (GS) and Veratrum nigrum (VN) are representative of incompatible pairs in “eighteen antagonistic medicaments” that have been recorded in the Chinese medicinal literature for over 2,000 years. However, evidence linking interference effects with combination use is scare. Based on the estrogen-like effect of GS described in our previous studies, we undertake a characterization of the interaction on estrogenic activity of GS and VN using in vivo models of immature and ovariectomized (OVX) mice and in vitro studies with MCF-7 cells for further mechanism. VN decreased the estrogenic efficacy of GS on promoting the development of the uterus and vagina in immature mice, and reversing the atrophy of reproductive tissues in OVX mice. VN interfered with the estrogenic efficacy of GS by decreasing the increase of the serum estradiol and the up-regulation of ERα and ERβ expressions by treatment with GS. And VN antagonized the estrogenic efficacy of GS on promoting the viability of MCF-7 cells and up-regulation of protein and gene expressions of ERs. In conclusion, this study provided evidence that GS and VN decreased effects on estrogenic activity, which might be related to regulation of estrogen secretion and ERs.
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Che CT, Wong MS, Lam CWK. Natural Products from Chinese Medicines with Potential Benefits to Bone Health. Molecules 2016; 21:239. [PMID: 26927052 PMCID: PMC6274145 DOI: 10.3390/molecules21030239] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 02/03/2016] [Accepted: 02/12/2016] [Indexed: 01/23/2023] Open
Abstract
Osteoporosis is a progressive, systemic bone disorder characterized by loss of bone mass and microstructure, leading to reduced bone strength and increased risk of fracture. It is often associated with reduced quality of life and other medical complications. The disease is common in the aging population, particularly among postmenopausal women and patients who receive long-term steroidal therapy. Given the rapid growth of the aging population, increasing life expectancy, the prevalence of bone loss, and financial burden to the healthcare system and individuals, demand for new therapeutic agents and nutritional supplements for the management and promotion of bone health is pressing. With the advent of global interest in complementary and alternative medicine and natural products, Chinese medicine serves as a viable source to offer benefits for the improvement and maintenance of bone health. This review summarizes the scientific information obtained from recent literatures on the chemical ingredients of Chinese medicinal plants that have been reported to possess osteoprotective and related properties in cell-based and/or animal models. Some of these natural products (or their derivatives) may become promising leads for development into dietary supplements or therapeutic drugs.
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Affiliation(s)
- Chun-Tao Che
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The University of Illinois at Chicago, Chicago, IL 60612, USA.
| | - Man Sau Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Christopher Wai Kei Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China.
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Ding J, Xu Y, Ma X, An J, Yang X, Liu Z, Lin N. Estrogenic effect of the extract of Renshen (Radix Ginseng) on reproductive tissues in immature mice. J TRADIT CHIN MED 2015; 35:460-7. [PMID: 26427118 DOI: 10.1016/s0254-6272(15)30125-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate the estrogenic efficacy of Renshen (Radix Ginseng) (GS) on reproductive target tissues in immature mice. METHODS One hundred and ten female immature Kunming (KM) mice, 21-day-old, were randomly assigned to eleven groups, 10 for each; one served as control group treated with 0.154 mg/kg estradiol valerate (EV, n = 10), the rest were treated respectively with GS intragastrically at a daily dose of 0.5, 1.0, 1.5, 3.0, 6.0, 12.0, 18.0, 24.0 and 30.0 g/kg (n = 10 in per group) for 7 days. The estrous cycle, uterine weight, hormone levels in circulation and histomorphology changes of uterus and vagina were scrupulously examined. The estrogen receptor (ER) α and ERβ expressions in the uterus and vagina were detected by immunohistochemistry and western blotting. RESULTS Treatment with GS at the dose of 12.0, 18.0 and 24.0 g/kg resulted significant estrogenic activity in the mice, as indicated by advanced and prolonged estrous stage and increased uterine weight (all P < 0.05). GS treatment substantially promoted development of reproductive tisue by thickening the uterine endometrium and increasing vaginal epithelial layers. In addition, treatment with GS induced significant up-regulation of ERα and ERβ expressions in reproductive tissues, and ERα up-regulation was stronger than that of ERβ. GS could raise levels of circulating estrogen, simultaneously decrease levels of luteinizing hormone and follicle-stimulating hormone (all P < 0.001) compared with the control group. CONCLUSION Our findings suggest that GS had estrogenic effect on reproductive tissues in immature mice by stimulating biosynthesis of estrogen in circulation and up-regulating ERs.
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Kiyama R, Wada-Kiyama Y. Estrogenic endocrine disruptors: Molecular mechanisms of action. ENVIRONMENT INTERNATIONAL 2015; 83:11-40. [PMID: 26073844 DOI: 10.1016/j.envint.2015.05.012] [Citation(s) in RCA: 178] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 05/20/2023]
Abstract
A comprehensive summary of more than 450 estrogenic chemicals including estrogenic endocrine disruptors is provided here to understand the complex and profound impact of estrogen action. First, estrogenic chemicals are categorized by structure as well as their applications, usage and effects. Second, estrogenic signaling is examined by the molecular mechanism based on the receptors, signaling pathways, crosstalk/bypassing and autocrine/paracrine/homeostatic networks involved in the signaling. Third, evaluation of estrogen action is discussed by focusing on the technologies and protocols of the assays for assessing estrogenicity. Understanding the molecular mechanisms of estrogen action is important to assess the action of endocrine disruptors and will be used for risk management based on pathway-based toxicity testing.
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Affiliation(s)
- Ryoiti Kiyama
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
| | - Yuko Wada-Kiyama
- Department of Physiology, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
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Wong AST, Che CM, Leung KW. Recent advances in ginseng as cancer therapeutics: a functional and mechanistic overview. Nat Prod Rep 2015; 32:256-72. [PMID: 25347695 DOI: 10.1039/c4np00080c] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cancer is one of the leading causes of death worldwide. Ginseng, a key ingredient in traditional Chinese medicine, shows great promise as a new treatment option. As listed by the U.S. National Institutes of Health as a complementary and alternative medicine, its anti-cancer functions are being increasingly recognized. This review covers the mechanisms of action of ginsenosides and their metabolites, which can modulate signaling pathways associated with inflammation, oxidative stress, angiogenesis, metastasis, and stem/progenitor-like properties of cancer cells. The emerging use of structurally modified ginsenosides and recent clinical studies on the use of ginseng either alone or in combination with other herbs or Western medicines which are exploited as novel therapeutic strategies will also be explored.
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Affiliation(s)
- Alice S T Wong
- State Key Laboratory of Oncogenes and Related Genes, and School of Biological Sciences, The University of Hong Kong, Hong Kong.
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Cevik O, Akpinar H, Oba R, Cilingir OT, Ozdemir ZN, Cetinel S, Yoldemir T. The effect of Momordica charantia intake on the estrogen receptors ESRα/ESRβ gene levels and apoptosis on uterine tissue in ovariectomy rats. Mol Biol Rep 2014; 42:167-77. [PMID: 25253099 DOI: 10.1007/s11033-014-3756-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 09/16/2014] [Indexed: 12/21/2022]
Abstract
Estrogen or combinational hormone therapy can protect to menopausal symptoms but exogenous estrogen therapy has some potential risks which in turns lead to the appearance of various diseases. In recent years plants with high phytoestrogen content are recommended as therapeutic agents for postmenopausal hormonal treatment. In this research, we investigated the effects of Momordica charantia (MC) on the estrogen production and E2 as well as anti-oxidative and anti-apoptotic role on the ovariectomy rat model. The rats were ovariectomized and fed on 2 g/kg of fruit extra of MC for 30 days by gavage. 17-β estradiol (E2) and 8-OHdG levels in serum, markers of oxidative damage of ROS and ESRα, ESRβ and NF-kB gene levels were measured in uterus horn tissue. Caspase-3, caspase-9, TNF-α, IL-6, IL-10, Bcl-2 and Nf-kB proteins expression were assessed by western blotting. Structural changes in tissue were examined with H&E staining. MC administration also stimulated the E2 production and ESRα/ESRβ gene levels and the inhibited oxidative damage. Furthermore, MC treatment enhanced anti-apoptotic and anti-inflammatory process and tissue regeneration. Data herein support that MC directly regulates uterine estrogen response and may serve as a new phytoestrogenic substance for the treatment of post-menopausal symptoms.
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Affiliation(s)
- Ozge Cevik
- Department of Biochemistry, Faculty of Pharmacy, Cumhuriyet University, Sivas, Turkey,
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Xu Y, Ding J, Ma XP, Ma YH, Liu ZQ, Lin N. Treatment with Panax ginseng antagonizes the estrogen decline in ovariectomized mice. Int J Mol Sci 2014; 15:7827-40. [PMID: 24806341 PMCID: PMC4057706 DOI: 10.3390/ijms15057827] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 03/18/2014] [Accepted: 04/15/2014] [Indexed: 02/03/2023] Open
Abstract
Ginseng is a popular herb for alleviating menopausal symptoms; however, no conclusive scientific data has shown ginseng as being efficient in such therapies. The present study was designed to evaluate the estrogenic efficacy of ginseng on reproductive target tissues of ovariectomized (OVX) mice. The OVX mice were treated with ginseng at doses of 12.0, 18.0 and 24.0 g/kg per day for four weeks. Ginseng treatments restored the estrus cycle and demonstrated significant estrogenic activity, as indicated by the reversal of the atrophy of the uterus and vagina, upregulation of estrogen receptor (ER) α and ER β expression at the protein and mRNA level in the reproductive tissues, where ER α upregulation was stronger than that of ER β. Meanwhile, treatment with ginseng significantly increased adrenal gland weight and serum estradiol and clearly decreased follicle-stimulating hormone (FSH) and luteinizing hormone (LH) in circulation. Notably, the largest changes in these parameters were found at the highest dose of 24.0 g/kg. Moreover, ginseng at 18.0 g/kg resulted in the greatest decrease in weight gain caused by ovariectomy. The data suggest that ginseng estrogenic responses show tissue variation that reflects different affinities of ERs for ginseng components. This study demonstrates that ginseng activity is mediated through estrogenic components and provides further evidence for ginseng treatment of postmenopausal symptoms.
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Affiliation(s)
- Ying Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Dongcheng District, Dongzhimen Nanxiao Road 16, Beijing 100700, China.
| | - Jie Ding
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Dongcheng District, Dongzhimen Nanxiao Road 16, Beijing 100700, China.
| | - Xiao-Ping Ma
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Dongcheng District, Dongzhimen Nanxiao Road 16, Beijing 100700, China.
| | - Ying-Hui Ma
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Road 5625, Changchun 130022, China.
| | - Zhi-Qiang Liu
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Road 5625, Changchun 130022, China.
| | - Na Lin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Dongcheng District, Dongzhimen Nanxiao Road 16, Beijing 100700, China.
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