1
|
Zhang YZ, Zhang B, Chen QQ, Qin L, Hu YQ, Bai CH, Li YL, Qin B. N-doped carbon dots coupled with molecularly imprinted polymers as a fluorescent sensor for ultrasensitive detection of genistein in soya products. Food Chem 2023; 424:136133. [PMID: 37267649 DOI: 10.1016/j.foodchem.2023.136133] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 06/04/2023]
Abstract
Rapid detection of genistein in soya products has remained difficult. Current methods necessitate sample handling and use of costly instruments. Here, using a simple one-pot reverse microemulsion method, a sensor based on N-doped carbon dots conjugated molecularly imprinted polymers (N-CDs@MIPs) was synthesized to analyze genistein. N-doped carbon dots were used as fluorescent component, genistein as the template molecule, and molecularly imprinted polymers as the selective sorbent in this fluorescence sensor. The sensor was then examined and optical studies demonstrated that N-CDs@MIPs not only had strong fluorescence emission and outstanding optical stability, but also had good sensitivity (detection limit 35.7 nM) and selectivity to genistein. Furthermore, the N-CDs@MIPs materials were used to analyze genistein in soya products, and the findings (which ranged from 99.77% to 106.11%) show that the N-CDs@MIPs has high potential for quickly detecting the amount of genistein in complicated food samples.
Collapse
Affiliation(s)
- Yu-Zhen Zhang
- School of Pharmacy, Institute of Medicine, Xi'an Medical University, Xi'an 710021, PR China
| | - Bo Zhang
- School of Pharmacy, Institute of Medicine, Xi'an Medical University, Xi'an 710021, PR China
| | - Qing-Qing Chen
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Lan Qin
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Ya-Qi Hu
- School of Pharmacy, Institute of Medicine, Xi'an Medical University, Xi'an 710021, PR China
| | - Chun-Hua Bai
- School of Pharmacy, Institute of Medicine, Xi'an Medical University, Xi'an 710021, PR China
| | - Yi-Le Li
- School of Pharmacy, Institute of Medicine, Xi'an Medical University, Xi'an 710021, PR China
| | - Bei Qin
- School of Pharmacy, Institute of Medicine, Xi'an Medical University, Xi'an 710021, PR China.
| |
Collapse
|
2
|
Jargin SV. Scientific Papers and Patents on Substances with Unproven Effects. Part 2. RECENT PATENTS ON DRUG DELIVERY & FORMULATION 2019; 13:160-173. [PMID: 31424374 PMCID: PMC7011683 DOI: 10.2174/1872211313666190819124752] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/19/2019] [Accepted: 08/01/2019] [Indexed: 12/03/2022]
Abstract
Several examples are discussed in this review, where substances without proven effects were proposed for practical use within the scope of evidence-based medicines. The following is discussed here: generalizations of the hormesis concept and its use in support of homeopathy; phytoestrogens and soy products potentially having feminizing effects; glycosaminoglycans for the treatment of osteoarthritis and possibilities of their replacement by diet modifications; flavonoids recommended for the treatment of chronic venous insufficiency and varicose veins; acetylcysteine as a mucolytic agent and its questionable efficiency especially by an oral intake; stem cells and cell therapies. In conclusion, placebo therapies can be beneficial and ethically justifiable but it is not a sufficient reason to publish biased information. Importantly, placebo must be devoid of adverse effects, otherwise, it is named pseudo-placebo. Therapeutic methods with unproven effects should be tested in high-quality research shielded from the funding bias. Some issues discussed in this review are not entirely clear, and the arguments provided here can initiate a constructive discussion.
Collapse
Affiliation(s)
- Sergei V. Jargin
- Peoples’ Friendship University of Russia, Clementovski per 6-82, Moscow115184, Russia
| |
Collapse
|
3
|
An BH, Jeong H, Zhou W, Liu X, Kim S, Jang CY, Kim HS, Sohn J, Park HJ, Sung NH, Hong CY, Chang M. Evaluation of the Biological Activity of Opuntia ficus indica as a Tissue- and Estrogen Receptor Subtype-Selective Modulator. Phytother Res 2016; 30:971-80. [PMID: 26989859 DOI: 10.1002/ptr.5602] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/07/2016] [Accepted: 02/09/2016] [Indexed: 11/07/2022]
Abstract
Phytoestrogens are selective estrogen receptor modulators (SERMs) with potential for use in hormone replacement therapy (HRT) to relieve peri/postmenopausal symptoms. This study was aimed at elucidating the molecular mechanisms underlying the SERM properties of the extract of Korean-grown Opuntia ficus-indica (KOFI). The KOFI extract induced estrogen response element (ERE)-driven transcription in breast and endometrial cancer cell lines and the expression of endogenous estrogen-responsive genes in breast cancer cells. The flavonoid content of different KOFI preparations affected ERE-luciferase activities, implying that the flavonoid composition likely mediated the estrogenic activities in cells. Oral administration of KOFI decreased the weight gain and levels of both serum glucose and triglyceride in ovariectomized (OVX) rats. Finally, KOFI had an inhibitory effect on the 17β-estradiol-induced proliferation of the endometrial epithelium in OVX rats. Our data demonstrate that KOFI exhibited SERM activity with no uterotrophic side effects. Therefore, KOFI alone or in combination with other botanical supplements, vitamins, or minerals may be an effective and safe alternative active ingredient to HRTs, for the management of postmenopausal symptoms. Copyright © 2016 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Byoung Ha An
- Department of Food and Nutrition, College of Life Sciences, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Hyesoo Jeong
- Graduate School of Biological Sciences, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Wenmei Zhou
- Graduate School of Biological Sciences, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Xiyuan Liu
- Graduate School of Biological Sciences, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Soolin Kim
- Graduate School of Biological Sciences, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Chang Young Jang
- Department of Pharmacy, College of Pharmacy, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Hyun-Sook Kim
- Department of Food and Nutrition, College of Life Sciences, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| | - Johann Sohn
- Natural F&P Corp. 39 Yangcheongsongdae-gil, Ochang-eup, Chongwon-gu, Cheongju-si, Chungbuk, Korea
| | - Hye-Jin Park
- Natural F&P Corp. 39 Yangcheongsongdae-gil, Ochang-eup, Chongwon-gu, Cheongju-si, Chungbuk, Korea
| | - Na-Hye Sung
- Natural F&P Corp. 39 Yangcheongsongdae-gil, Ochang-eup, Chongwon-gu, Cheongju-si, Chungbuk, Korea
| | - Cheol Yi Hong
- Natural F&P Corp. 39 Yangcheongsongdae-gil, Ochang-eup, Chongwon-gu, Cheongju-si, Chungbuk, Korea
| | - Minsun Chang
- Department of Medical and Pharmaceutical Science, College of Science, Sookmyung Women's University, 100, Chungparo 47-gil, Seoul, 140-742, Republic of Korea
| |
Collapse
|
4
|
Mocanu MM, Nagy P, Szöllősi J. Chemoprevention of Breast Cancer by Dietary Polyphenols. Molecules 2015; 20:22578-620. [PMID: 26694341 PMCID: PMC6332464 DOI: 10.3390/molecules201219864] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/04/2015] [Accepted: 12/08/2015] [Indexed: 02/07/2023] Open
Abstract
The review will discuss in detail the effects of polyphenols on breast cancer, including both the advantages and disadvantages of the applications of these natural compounds. First, we focus on the characterization of the main classes of polyphenols and then on in vitro and in vivo experiments carried out in breast cancer models. Since the therapeutic effects of the administration of a single type of polyphenol might be limited because of the reduced bioavailability of these drugs, investigations on combination of several polyphenols or polyphenols with conventional therapy will also be discussed. In addition, we present recent data focusing on clinical trials with polyphenols and new approaches with nanoparticles in breast cancer. Besides the clinical and translational findings this review systematically summarizes our current knowledge about the molecular mechanisms of anti-cancer effects of polyphenols, which are related to apoptosis, cell cycle regulation, plasma membrane receptors, signaling pathways and epigenetic mechanisms. At the same time the effects of polyphenols on primary tumor, metastasis and angiogenesis in breast cancer are discussed. The increasing enthusiasm regarding the combination of polyphenols and conventional therapy in breast cancer might lead to additional efforts to motivate further research in this field.
Collapse
Affiliation(s)
- Maria-Magdalena Mocanu
- Department of Biophysics, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
| | - Péter Nagy
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
| | - János Szöllősi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
- MTA-DE Cell Biology and Signaling Research Group, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
| |
Collapse
|
5
|
Jargin SV. Soy and phytoestrogens: possible side effects. GERMAN MEDICAL SCIENCE : GMS E-JOURNAL 2014; 12:Doc18. [PMID: 25587246 PMCID: PMC4270274 DOI: 10.3205/000203] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 11/13/2014] [Indexed: 12/15/2022]
Abstract
Phytoestrogens are present in certain edible plants being most abundant in soy; they are structurally and functionally analogous to the estrogens. Phytoestrogens have been applied for compensation of hormone deficiency in the menopause. At the same time, soy products are used in infant food and other foodstuffs. Furthermore, soy is applied as animal fodder, so that residual phytoestrogens and their active metabolites such as equol can remain in meat and influence the hormonal balance of the consumers. There have been only singular reports on modified gender-related behavior or feminization in humans in consequence of soy consumption. In animals, the intake of phytoestrogens was reported to impact fertility, sexual development and behavior. Feminizing effects in humans can be subtle and identifiable only statistically in large populations.
Collapse
|
6
|
Albini A, Rosano C, Angelini G, Amaro A, Esposito AI, Maramotti S, Noonan DM, Pfeffer U. Exogenous hormonal regulation in breast cancer cells by phytoestrogens and endocrine disruptors. Curr Med Chem 2014; 21:458-500. [PMID: 24304271 PMCID: PMC4153070 DOI: 10.2174/09298673113206660291] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 08/19/2013] [Accepted: 10/04/2013] [Indexed: 01/25/2023]
Abstract
Observations on the role of ovarian hormones in breast cancer growth, as well as interest in contraception, stimulated research into the biology of estrogens. The identification of the classical receptors ERα and ERβ and the transmembrane receptor GPER and the resolution of the structure of the ligand bound to its receptor established the principal molecular mechanisms of estrogen action. The presence of estrogen-like compounds in many plants used in traditional medicine or ingested as food ingredients, phytoestrogens, as well as the estrogenic activities of many industrial pollutants and pesticides, xenoestrogens, have prompted investigations into their role in human health. Phyto- and xenoestrogens bind to the estrogen receptors with a lower affinity than the endogenous estrogens and can compete or substitute the hormone. Xenoestrogens, which accumulate in the body throughout life, are believed to increase breast cancer risk, especially in cases of prenatal and prepuberal exposure whereas the role of phytoestrogens is still a matter of debate. At present, the application of phytoestrogens appears to be limited to the treatment of post-menopausal symptoms in women where the production of endogenous estrogens has ceased. In this review we discuss chemistry, structure and classification, estrogen signaling and the consequences of the interactions of estrogens, phytoestrogens and xenoestrogens with their receptors, the complex interactions of endogenous and exogenous ligands, the evaluation of the health risks related to xenoestrogens, and the perspectives toward the synthesis of potent third generation selective estrogen receptor modulators (SERMs).
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - U Pfeffer
- Universita degli Studi dell'Insubria, Facolta di Medicina e Chirurgia, Dipartimento di Biotecnologie e Scienze della Vita, Viale Dunant, n.3 Varese, Italy, 21100.
| |
Collapse
|
7
|
Sánchez-Borrego R, Navarro MC, Llaneza P, Hormigo A, Duran M, Mendoza N. Efficacy and safety of a phyto-SERM as an alternative to hormone therapy. Climacteric 2014; 18:350-7. [PMID: 25236805 DOI: 10.3109/13697137.2014.960383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this review, we analyze the efficacy and safety of DT56a in the treatment of postmenopausal symptoms. Similar to all selective estrogen receptor modulators (SERMs), DT56a demonstrates dual agonistic and antagonistic effects due to the synergy between its components. DT56a is referred to as a plant-origin SERM (phyto-SERM) and, for this reason, its therapeutic capacity in postmenopausal women differs from other phytoestrogens used independently. Although interesting data on relief of vasomotor symptoms have been reported for DT56a, further clinical studies with a greater number of cases and a longer period of study are required to correctly identify its indications for use as an alternative to hormone therapy, especially in preventing osteoporosis.
Collapse
|
8
|
Hu XJ, Song WR, Gao LY, Nie SP, Eisenbrand G, Xie MY. Assessment of dietary phytoestrogen intake via plant-derived foods in China. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:1325-35. [PMID: 24950423 DOI: 10.1080/19440049.2014.930562] [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: 12/31/2022]
Abstract
The potential influence of dietary phytoestrogen exposure on human health during different life phases including early childhood is a matter of scientific debate. In order to improve the risk-benefit assessment of exposure to dietary phytoestrogen, reliable and age-stratified exposure data are desirable. For contributing to the database on phytoestrogen exposure, in the present study plant-derived foods from the Chinese market were analysed by LC-MS/MS for their contents of phytoestrogens, including daidzein, genistein, secoisolariciresinol, glycitein and coumestrol. The analytical data showed the presence of phytoestrogens in a concentration range of less than 0.1 to about 50 μg g(-1). Dietary intake was assessed on the basis of average food intake data obtained from interviewing 1000 randomly selected people with the help of food frequency questionnaires. Based on the overall population sampled, the average total phytoestrogen intake was estimated at 232 μg kg(-1) day(-1). Genistein contributed to about 66%, secoisolariciresinol and glycitein to about 10% each, and daidzein to about 7% of the overall intake. Coumestrol was present only in trace amounts. Age-related exposure assessment indicated that pre-pubertal children (aged 0-14 years) were exposed at the highest level with an average total phytoestrogen intake of 621 μg kg(-1) day(-1). The substantially higher average exposure of children as compared with adults should trigger further research into the potential health effects of early life exposure to phytoestrogen.
Collapse
Affiliation(s)
- Xiao Juan Hu
- a State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang , China
| | | | | | | | | | | |
Collapse
|
9
|
Liu X, Nam JW, Song YS, Viswanath ANI, Pae AN, Kil YS, Kim HD, Park JH, Seo EK, Chang M. Psoralidin, a coumestan analogue, as a novel potent estrogen receptor signaling molecule isolated from Psoralea corylifolia. Bioorg Med Chem Lett 2014; 24:1403-6. [PMID: 24507928 DOI: 10.1016/j.bmcl.2014.01.029] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 01/03/2014] [Accepted: 01/10/2014] [Indexed: 10/25/2022]
Abstract
A novel biological activity of psoralidin as an agonist for both estrogen receptor (ER)α and ERβ agonist has been demonstrated in our study. Psoralidin has been characterized as a full ER agonist, which activates the classical ER-signaling pathway in both ER-positive human breast and endometrial cell lines as well as non-human cultured cells transiently expressing either ERα or ERβ. The estrogenic activity was determined using the relative expression levels of either reporter or the endogenous genes dependent on the agonist-bound ER to the estrogen response element (ERE). Psoralidin at 10 μM was able to induce the maximum reporter gene expression corresponding to that of E2-treated cells and such activation of the ERE-reporter gene by psoralidin was completely abolished by the cotreatment of a pure ER antagonist, implying that the biological activities of psoralidin are mediated by ER. Psoralidin was also able to induce the endogenous estrogen-responsive gene, pS2, in human breast cancer cells MCF-7. It was observed that activation of the classical ER-signaling pathway by psoralidin is mediated via induction of ER conformation by psoralidin and direct binding of the psoralidin-ER complex to the EREs present in the promoter region of estrogen-responsive genes, as shown by chromatin immunoprecipitation assay results. Finally, molecular docking of psoralidin to the ligand binding pocket of the ERα showed that psoralidin is able to mimic the binding interactions of E2, and thus, it could act as an ER agonist in the cellular environment.
Collapse
Affiliation(s)
- Xiyuan Liu
- Department of Biological Science, College of Science, Sookmyung Women's University, 47 Chungpa-ro, Yongsan-Gu, 140-742 Seoul, Republic of Korea
| | - Joo-Won Nam
- Graduate School of Pharmaceutical Sciences, Global Top5 Research Program, College of Pharmacy, Ewha Womans University, 11-1 Daehyun-Dong, Seodaemun-Gu, 120-750 Seoul, Republic of Korea
| | - Yun Seon Song
- College of Pharmacy, Sookmyung Women's University, 47 Chungpa-ro, Yongsan-Gu, 140-742 Seoul, Republic of Korea
| | - Ambily Nath Indu Viswanath
- Center for Neuro-Medicine, Korea Institute of Science and Technology, 136-791 Seoul, Republic of Korea; Department of Biological Chemistry, School of Science, University of Science and Technology, 52 Eoeun Dong, Yuseong-Gu, 305-333 Daejeon, Republic of Korea
| | - Ae Nim Pae
- Center for Neuro-Medicine, Korea Institute of Science and Technology, 136-791 Seoul, Republic of Korea; Department of Biological Chemistry, School of Science, University of Science and Technology, 52 Eoeun Dong, Yuseong-Gu, 305-333 Daejeon, Republic of Korea
| | - Yun-Seo Kil
- Graduate School of Pharmaceutical Sciences, Global Top5 Research Program, College of Pharmacy, Ewha Womans University, 11-1 Daehyun-Dong, Seodaemun-Gu, 120-750 Seoul, Republic of Korea
| | - Hee-Doo Kim
- College of Pharmacy, Sookmyung Women's University, 47 Chungpa-ro, Yongsan-Gu, 140-742 Seoul, Republic of Korea
| | - Jong Hoon Park
- Department of Biological Science, College of Science, Sookmyung Women's University, 47 Chungpa-ro, Yongsan-Gu, 140-742 Seoul, Republic of Korea
| | - Eun-Kyoung Seo
- Graduate School of Pharmaceutical Sciences, Global Top5 Research Program, College of Pharmacy, Ewha Womans University, 11-1 Daehyun-Dong, Seodaemun-Gu, 120-750 Seoul, Republic of Korea.
| | - Minsun Chang
- Department of Medical and Pharmaceutical Science, College of Science, Sookmyung Women's University, 47 Chungpa-ro, Yongsan-Gu, 140-742 Seoul, Republic of Korea.
| |
Collapse
|
10
|
Leclercq G, Jacquot Y. Interactions of isoflavones and other plant derived estrogens with estrogen receptors for prevention and treatment of breast cancer-considerations concerning related efficacy and safety. J Steroid Biochem Mol Biol 2014; 139:237-44. [PMID: 23274118 DOI: 10.1016/j.jsbmb.2012.12.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 12/07/2012] [Accepted: 12/18/2012] [Indexed: 12/20/2022]
Abstract
Phytoestrogens are natural endocrine disruptors that interfere with estrogenic pathways. They insert directly within the hormone-binding domain of ERα and β, with a preference for the β isoform of which the concentration predominates in the normal mammary epithelium. Since ERβ antagonizes the growth promoting effect of ERα, which is mainly expressed in estrogen-sensitive tumor cells, a potential protective action against breast cancer incidence has been ascribed to phytoestrogens. The fact that Asian women living in far-east countries who consume isoflavone-rich food are less subjected to breast cancer emergence than their congeners in the USA as well as Caucasian women has been advocated to justify such a concept. Overview of data concerning the mechanism of action phytoestrogens reveals that such a view is an oversimplification: Such compounds interfere with a huge panel of regulatory proteins, giving rise to both promoting and antagonizing carcinogenic effects. Moreover, various physiological and pathological factors able to amplify these effects are not often sufficiently taken into account, which increases the difficulty to interpret data. Nevertheless, this overview of data established that chemical structures and concentrations modulate such effects: at the micromolar level, isoflavones activate ERα-mediated transcription and breast cancer cell proliferation while flavones fail to induce any significant promoting effects. At higher doses, both classes of compounds may display an antitumor activity. Reasons for such distinct behaviors as well as their potential impact in therapeutic applications are analyzed here. Ability of isoflavones and flavones to antagonize the association of calmodulin to ERα, which is required for its enhanced transcriptional activity is evoked to justify the antitumor activity ascribed to some flavones. Finally, a suspicion that peculiar classes of phytoestrogens may adopt a SERM-like conformation is addressed in a context of selection and synthesis of compounds with non-equivocal therapeutic value. This article is part of a Special Issue entitled "Phytoestrogens".
Collapse
Affiliation(s)
- Guy Leclercq
- Laboratoire J.-C. Heuson de Cancérologie Mammaire, Université Libre de Bruxelles (U.L.B.), Institut Jules Bordet, 1, rue Héger Bordet, Brussels, B-1000, Belgium.
| | | |
Collapse
|
11
|
Barba M, Pizzuti L, Sergi D, Maugeri-Saccà M, Vincenzoni C, Conti F, Tomao F, Vizza E, Di Lauro L, Di Filippo F, Carpano S, Mariani L, Vici P. Hot flushes in women with breast cancer: state of the art and future perspectives. Expert Rev Anticancer Ther 2013; 14:185-98. [DOI: 10.1586/14737140.2013.856271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
12
|
Shim MK, Lee YJ. Estrogen receptor is activated by korean red ginseng in vitro but not in vivo. J Ginseng Res 2013; 36:169-75. [PMID: 23717117 PMCID: PMC3659583 DOI: 10.5142/jgr.2012.36.2.169] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 01/31/2012] [Accepted: 02/10/2012] [Indexed: 12/21/2022] Open
Abstract
Ginseng has been used as a traditional medicine for treatment of many diseases and for general health maintenance in people of all ages. Ginseng is also used to ameliorate menopausal systems. We investigated the estrogenic activity of Korean red ginseng (KRG) in a transient transfection system, using estrogen receptor (ER) and estrogen-responsive luciferase plasmids in MCF-7 cells. The extract activated both ERα and ERβ. KRG modulated the mRNA levels of estrogen-responsive genes such as pS2 and ESR1 and decreased the protein level of ERα. In order to examine in vivo estrogenic activity of KRG, sixteen female Sprague-Dawley rats separated into four groups were studied for nine weeks: non-ovariectomized (OVX) rats treated with olive oil, OVX rats treated with olive oil, OVX rats treated with 17-β-estradiol (E2) in olive oil, and OVX rats treated with KRG extract in olive oil. The experiments were repeated for three times and the data of twelve rats were combined. Body weight of OVX rats was greater than that of sham-operated control rats and was decreased by E2 treatment. Uterine weight increased after E2 treatment compared to OVX rats. However, no difference in body or uterine weight was observed with KRG intake. KRG induced reductions in total cholesterol, low density lipoprotein cholesterol/total cholesterol, high density lipoprotein cholesterol/total cholesterol, and low density lipoprotein cholesterol/high density lipoprotein cholesterol, but not to the same degree as did E2 intake. These results show that KRG does contain estrogenic activity as manifested by in vitro study but the activity is not strong enough to elicit physiological responses.
Collapse
Affiliation(s)
- Myeong Kuk Shim
- Department of Bioscience and Biotechnology, Institute of Biotechnology, College of Life Science, Sejong University, Seoul 143-747, Korea
| | | |
Collapse
|
13
|
Letters to the Editor. Menopause 2013; 20:359. [DOI: 10.1097/gme.0b013e3182843379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
14
|
Risiken und fraglicher Nutzen von Nahrungsergänzungsmitteln mit isolierten Isoflavonen für Frauen in und nach der Menopause. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2012; 56:277-84. [DOI: 10.1007/s00103-012-1604-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
15
|
Lowry SJ, Sprague BL, Bowles EJA, Hedman CJ, Hemming J, Hampton JM, Burnside ES, Sisney GA, Buist DS, Trentham-Dietz A. Mammographic breast density and serum phytoestrogen levels. Nutr Cancer 2012; 64:783-9. [PMID: 22860715 PMCID: PMC4055295 DOI: 10.1080/01635581.2012.707279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Some forms of estrogen are associated with breast cancer risk as well as with mammographic density (MD), a strong marker of breast cancer risk. Whether phytoestrogen intake affects breast density, however, remains unclear. We evaluated the association between serum levels of phytoestrogens and MD in postmenopausal women. We enrolled 269 women, ages 55-70 yr, who received a screening mammogram and had no history of postmenopausal hormone use. Subjects completed a survey on diet and factors related to MD and provided a blood sample for analysis of 3 phytoestrogens: genistein, daidzein, and coumestrol. We examined whether mean percent MD was related to serum level of phytoestrogens, adjusting for age and body mass index. Genistein and daidzein levels correlated with self-reported soy consumption. Mean percent MD did not differ across women with different phytoestrogen levels. For example, women with nondetectable genistein levels had mean density of 11.0% [95% confidence intervals (CI) = 9.9-12.4], compared to 10.5% (95% CI = 8.0-13.7) and 11.2% (95% CI = 8.7-14.6) for < and ≥ median detectable levels, respectively. In a population with relatively low soy intake, serum phytoestrogens were not associated with mammographic density. Additional studies are needed to determine effects of higher levels, particularly given patterns of increasing phytoestrogen intake.
Collapse
Affiliation(s)
- Sarah J. Lowry
- Group Health Research Institute
- Department of Epidemiology, University of Washington
| | | | | | | | | | | | - Elizabeth S. Burnside
- University of Wisconsin Carbone Cancer Center
- Department of Radiology, University of Wisconsin
| | | | | | - Amy Trentham-Dietz
- University of Wisconsin Carbone Cancer Center
- Department of Population Health Sciences, University of Wisconsin
| |
Collapse
|
16
|
Guttuso T. Effective and clinically meaningful non-hormonal hot flash therapies. Maturitas 2012; 72:6-12. [PMID: 22377187 DOI: 10.1016/j.maturitas.2012.01.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 01/30/2012] [Accepted: 01/31/2012] [Indexed: 11/19/2022]
Abstract
Although many non-hormonal compounds have shown statistically significant benefit over placebo in hot flash randomized controlled trials (RCTs), these studies have varied considerably in basic methodology making it challenging to deduce which compounds have the greatest potential to provide clinically meaningful benefit. This review used evidence-based methodology closely mirroring the FDA and EMEA guidelines as a template to identify "well-designed" RCTs from which effective and clinically meaningful non-hormonal hot flash therapies could be identified. In addition, pertinent safety information was reviewed. Out of 3548 MEDLINE citations and abstracts, 51 well-designed hot flash RCTs were identified. From these trials, gabapentin, oxybutynin ER, desvenlafaxine, soy-derived isoflavones and black cohosh each showed a clinically meaningful treatment effect in at least 1 RCT. Among these 5 compounds, only gabapentin demonstrated consistent and statistically significant benefit over placebo in all of its well-designed RCTs. Desvenlafaxine, soy-derived isoflavones, and black cohosh demonstrated statistically significant benefit over placebo in 75%, 21%, and 17% of the well-designed RCTs for each compound, respectively. There was only 1 well-designed RCT using oxybutynin ER, which showed it to have a robust and clinically meaningful benefit. In terms of safety, there have been cardiovascular risks associated with desvenlafaxine use in postmenopausal women with hot flashes. The use of anticonvulsants, in general, has been associated with an absolute 0.21% increase in suicidal thoughts and behavior. Further research is needed with several of these nonhormonal compounds to replicate these findings and to also directly compare their efficacy and tolerability with those of hormone replacement therapy.
Collapse
Affiliation(s)
- Thomas Guttuso
- University at Buffalo, Buffalo, NY 14214, United States.
| |
Collapse
|
17
|
|
18
|
Molecular Pathways: Digoxin Use and Estrogen-Sensitive Cancers—Risks and Possible Therapeutic Implications: Figure 1. Clin Cancer Res 2012; 18:2133-7. [DOI: 10.1158/1078-0432.ccr-11-1389] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|