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phytoestrogen

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https://www.readbyqxmd.com/read/28817364/association-between-dietary-phytoestrogens-intakes-and-prostate-cancer-risk-in-sicily
#1
Giorgio I Russo, Marina Di Mauro, Federica Regis, Giulio Reale, Daniele Campisi, Marina Marranzano, Arturo Lo Giudice, Tatiana Solinas, Massimo Madonia, Sebastiano Cimino, Giuseppe Morgia
OBJECTIVE: In this study we aimed to investigate the association between dietary phytoestrogen consumption and prostate cancer in a sample of southern Italian individuals. METHODS: A population-based case-control study on the association between prostate cancer and dietary factors was conducted from January 2015 to December 2016 in a single institution of the municipality of Catania, southern Italy (Registration number: 41/2015). A total of 118 histopathological-verified prostate cancer (PCa) cases and a total of 222 controls were collected...
August 17, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28814228/the-effects-and-action-mechanisms-of-phytoestrogens-on-vasomotor-symptoms-during-menopausal-transition-thermoregulatory-mechanism
#2
Haryati Ahmad Hairi, Ahmad Nazrun Shuid, Nurul Izzah Ibrahim, Jamia Azdina Jamal, Norazlina Mohamed, Isa Naina Mohamed
Phytoestrogens has recently been claimed to positively influence menopausal discomforts, including hot flashes. However, little is known about the influence of phytoestrogens on core body temperature during estrogen fluctuation at menopause. With many published findings that phytoestrogens could relieve menopausal complaints, the present review was aimed at assessing the effects of phytoestrogens on thermoregulatory mechanism during menopausal transition. Thephytoestrogens of interest in relation to human health include isoflavones, lignans, coumestans and stilbenes, which are widely distributed within nature...
August 16, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28812967/tanshinone-induced-ers-suppresses-igfii-activation-to-alleviate-ang-ii-mediated-cardiac-hypertrophy
#3
Ya-Fang Chen, Nien-Hung Lee, Pei-Ying Pai, Li-Chin Chung, Chia-Yao Shen, Peramaiyan Rajendran, Yu-Feng Chen, Ray-Jade Chen, Vijaya Padma Viswanadha, Wei-Wen Kuo, Chih-Yang Huang
Cardiomyopathy involves changes in myocardial ultrastructure and cardiac hypertrophy. Angiotensin II (AngII) has previously been shown to stimulate the expression of IGF-2 and IGF-2R in H9c2 cardiomyoblasts and increase of blood pressure, and cardiac hypertrophy. Estrogen receptors (ERs) exert protective effects, such as anti-hypertrophy in cadiomyocytes. Tanshinone IIA (TSN), a main active ingredient from a Chinese medical herb, Salvia miltiorrhiza Bunge (Danshen), was shown to protect cardiomyocytes hypertrophy by different stress signals...
October 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28812892/designer-extracts-as-tools-to-balance-estrogenic-and-chemopreventive-activities-of-botanicals-for-women-s-health
#4
Birgit M Dietz, Shao-Nong Chen, René F Ramos Alvarenga, Huali Dong, Dejan Nikolić, Martin Biendl, Richard B van Breemen, Judy L Bolton, Guido F Pauli
Botanical dietary supplements contain multiple bioactive compounds that target numerous biological pathways. The lack of uniform standardization requirements is one reason that inconsistent clinical effects are reported frequently. The multifaceted biological interactions of active principles can be disentangled by a coupled pharmacological/phytochemical approach using specialized ("knock-out") extracts. This is demonstrated for hops, a botanical for menopausal symptom management. Employing targeted, adsorbent-free countercurrent separation, Humulus lupulus extracts were designed for pre- and postmenopausal women by containing various amounts of the phytoestrogen 8-prenylnaringenin (8-PN) and the chemopreventive constituent xanthohumol (XH)...
August 16, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28804245/dna-microarray-analysis-of-estrogen-responsive-genes-in-ishikawa-cells-by-glabridin
#5
Poh Su Wei Melissa, Yong Voon Chen Phelim, Visweswaran Navaratnam, Chia Yoke Yin
Based on a previous study, glabridin displayed a dose-dependent increase in estrogenic activity and cell proliferative activity in Ishikawa cells. However, when treated in combination with 17β-E2, synergistic estrogenic effect was observed but without the same synergistic increase in cell proliferative effect. This study aimed to identify the estrogen and nonestrogen-regulated activities induced by glabridin and in combination with 17β-E2 in comparison with 17β-E2. The results showed that 10 µM glabridin and the combination treatment of 100 nM glabridin with 1 nM 17β-E2 regulated both the genomic and nongenomic estrogen pathways to possibly provide benefits of estrogens in cardiovascular, circulatory, and vasculature systems...
2017: Biochemistry Insights
https://www.readbyqxmd.com/read/28780881/-phytoestrogens-in-the-treatment-of-menopause
#6
Júlia Remport, Anna Blázovics
In previous centuries many women did not even live until their menopause years due to poor economic conditions, deficiencies of medicine, epidemics and wars. Nowadays in the developed countries, people live until they are 75-80 years old, and with the expansion of average age, the number of people affected by menopause and the years spent in that state increase. Nowadays women spend one third of their lives in the menopausal stage. The only effective way to treat unpleasant symptoms for centuries was with the use of herbs, and the knowledge about them spread through oral tradition...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28763397/application-of-the-21-item-vulvovaginal-symptoms-questionnaire-in-postmenopausal-spanish-women
#7
Ana M Fernández-Alonso, Javier Alcaide-Torres, Isabel M Fernández-Alonso, Peter Chedraui, Faustino R Pérez-López
OBJECTIVE: To assess vulvovaginal symptoms and urinary incontinence in postmenopausal women. Secondarily to evaluate factors related to the severity of vulvovaginal symptoms and the internal consistency of the used tools. METHODS: In this cross-sectional study, the Spanish language version of the 21-item Vulvovaginal Symptoms Questionnaire (VSQ) and the 3-item International Consultation on Incontinence Questionnaire (ICIQ-SF) were applied to 122 postmenopausal Spanish women aged 45 to 75 years...
July 31, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28762131/schizandra-chinensis-exhibits-phytoestrogenic-effects-by-regulating-the-activation-of-estrogen-receptor-%C3%AE-and-%C3%AE
#8
Mi Hye Kim, Hyoun-Su Lee, Seong Bin Hong, Woong Mo Yang
OBJECTIVE: To investigate the phytoestrogenic effects of Schizandra chinensis (SC) extract by regulating the activation of estrogen receptor. METHODS: Western blotting assay was performed to investigate the effect of SC extract (1, 10, 100 μg/mL) on the expression of estrogen receptor (ER)-α and -β in MCF-7 human breast cancer cells. Cell viability and the levels of c-fos and c-Jun were analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and Western blot analysis, respectively, to further confirm the anti-cancer effect of SC extract...
July 31, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28754472/exposure-to-contaminants-and-nutritional-intakes-in-a-french-vegetarian-population
#9
S Fleury, G Rivière, B Allès, E Kesse-Guyot, C Méjean, S Hercberg, M Touvier, N Bemrah
The NutriNet Santé study collected, on a voluntary basis, the dietary consumption of French vegetarian populations (N = 1766, including 188 vegan individuals) from 18 to 81 years (18-77 years for the vegan). Taking advantage of the availability of contamination data generated in the context of the second French total diet study, dietary exposures of French vegetarian populations to several contaminants were estimated. Results showed that exposures to persistent organic pollutants (PCBs, PCDD/Fs for instance) was dramatically lower than those of the general French population due to the non consumption of food of animal origins...
July 25, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28738876/enterolactone-has-stronger-effects-than-enterodiol-on-ovarian-cancer
#10
Huidi Liu, Jianrui Liu, Siwen Wang, Zheng Zeng, Ting Li, Yongfang Liu, Emilio Mastriani, Qing-Hai Li, Hong-Xia Bao, Yu-Jie Zhou, Xiaoyu Wang, Sijing Hu, Shan Gao, Yingying Qi, Zhihang Shen, Hongyue Wang, Miao Yu, Tingting Gao, Randal N Johnston, Shu-Lin Liu
BACKGROUND: Ovarian cancer is one of the three leading gynecological malignancies, characterized by insidious growth, highly frequent metastasis, and quick development of drug resistance. As a result, this disease has low 5-year survival rates. Estrogen receptor inhibitors were commonly used for the treatment, but only 7% to 18% of patients respond to anti-estrogen therapies. Therefore, more effective therapies to inhibit estrogen-related tumors are urgently needed. Recently, phytoestrogens, such as lignans with estrogen-like biological activities, have attracted attention for their potential effects in the prevention or treatment of estrogen-related diseases...
July 24, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28734033/genistein-and-enterolactone-in-relation-to-ki-67-expression-and-her2-status-in-postmenopausal-breast-cancer-patients
#11
Stefanie Jaskulski, Audrey Y Jung, Anja Rudolph, Theron Johnson, Kathrin Thöne, Esther Herpel, Peter Sinn, Jenny Chang-Claude
SCOPE: Phytoestrogens (PE) may improve breast cancer prognosis by modifying tumor prognostic markers, such as cell proliferation marker Ki-67 and human epidermal growth factor receptor 2 (HER2). Epidemiological evidence linking lignans and isoflavones to Ki-67 and HER2 is limited. We examined associations between the major metabolites of lignans and isoflavones - enterolactone (ENL) and genistein (GEN) - respectively, and Ki-67 expression and HER2 in tumor tissue of breast cancer patients...
July 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28728453/incomplete-metabolism-of-phytoestrogens-by-gut-microbiota-from-children-under-the-age-of-three
#12
Pilar Gaya, Abel Sánchez-Jiménez, Ángela Peirotén, Margarita Medina, José Maria Landete
Phytoestrogens are plant-derived polyphenols with structural and functional similarities to mammalian oestrogens. The aim of this work was to study the metabolism of phytoestrogens by children's intestinal microbiota and to compare it with previous results in adults. Faecal samples of 24 healthy children were subjected to phytoestrogen fermentation assay. Only one child produced equol, while O-desmethylangolensin was found in all. Urolithin production was detected in 14 children and enterolactone in 10. Further comparison with the metabolism of phytoestrogens by adult intestinal microbiota reflected that glycitein, dihydrogenistein, urolithins D and E, enterolactone, secoisolariciresinol and arctigenin were the most important metabolites differentiating between adult and child microbial gut metabolism...
July 20, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28720470/molecular-docking-prediction-and-in-vitro-studies-elucidate-anti-cancer-activity-of-phytoestrogens
#13
Shreelekha Dutta, Prashant S Kharkar, Niteshkumar U Sahu, Aparna Khanna
AIM: The study is aimed at evaluating the chemosensitization and apoptotic effect of aglycone rich extracts of dietary phytoestrogens (derived from soybean and flaxseed) on estrogen receptor positive, MCF-7 and estrogen receptor negative, MDA-MB-231 cells. The extracts show potent activity on both the cell lines, hence, in silico studies have been carried out to find the possible reason for their activity. MAIN METHODS: MTT assay was carried to assess chemosensitization effect and activated caspase-3/7 activity was studied using flow-cytometry and western blotting...
July 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28718749/glycinol-enhances-osteogenic-differentiation-and-attenuates-the-effects-of-age-on-mesenchymal-stem-cells
#14
Amy L Strong, Robert B Jones, Julie Glowacki, Stephen M Boue, Matthew E Burow, Bruce A Bunnell
AIM: Phytoestrogens, such as glycinol, have recently gained significant attention as an alternative therapy for osteoporosis due to their structural similarity to estradiol and their bone-generating potential. METHODS: The osteogenic effects of glycinol were investigated in human bone marrow mesenchymal stem cells (BMSCs) derived from older (>50 years old) and younger subjects (<25 years old). RESULTS: BMSCs isolated from older donors demonstrated reduced osteogenesis...
July 18, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28706438/genistein-suppresses-retinoblastoma-cell-viability-and-growth-and-induces-apoptosis-by-upregulating-mir-145-and-inhibiting-its-target-abce1
#15
Dong Wei, Lieying Yang, Bo Lv, Lijuan Chen
PURPOSE: Retinoblastoma is a rare malignancy in developing retina tissue in children with limited therapeutic options. Here we sought to investigate the potential clinical value of genistein, the phytoestrogen derived from the soybean with antioxidant activity, in this disease. METHODS: Retinoblastoma cells were treated with genistein. Colony formation capacity was measured with soft agar assay. MiRNA was identified with microarray. Post-transcriptional regulation of gene expression was determined with dual-luciferase reporter assay...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28702975/spontaneous-retrospective-clinical-evaluation-of-a-new-phytoestrogen-based-cosmetic-gel-cream-on-postmenopausal-women%C3%A2-s-skin
#16
P Amori, J Lotti, T Lotti, G Vitiello
The purpose of this study is to evaluate the efficacy of daily application of a new phytoestrogen-based cosmetic gel cream on postmenopausal women’s skin. Sixty postmenopausal women were evaluated. Each subject was initially (T0) submitted to a hydration and sebometry test. A quantity of 50 ml of phytoestrogen-containing gel cream was given for one month to each patient. At the end of the month (T1), the tests were repeated. At the end of the study, 85% of the women showed an improvement of facial skin hydration...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28698543/genistein-protects-genioglossus-myoblast-against-hypoxia-induced-injury-through-pi3k-akt-and-erk-mapk-pathways
#17
Wanghui Ding, Xiaoyan Chen, Wen Li, Zhen Fu, Jiejun Shi
Obstructive sleep apnea and hypopnea syndrome (OSAHS) is a clinical syndrome characterized by recurrent episodes of obstruction of the upper airway during sleep that leads to a hypoxic condition. Genioglossus, an important pharyngeal muscle, plays an important role in maintaining an open upper airway for effective breathing. Our previous study found that genistein (a kind of phytoestrogen) protects genioglossus muscle from hypoxia-induced oxidative injury. However, the underlying mechanism is still unknown...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28692816/unique-oestrogen-receptor-ligand-binding-domain-sequence-of-native-parrots-a-possible-link-between-phytoestrogens-and-breeding-success
#18
Catherine E J Davis, Adrian H Bibby, Kevin M Buckley, Kenneth P McNatty, Janet L Pitman
The New Zealand (NZ) native parrots kākāpō, kākā and kea are classified as critically endangered, endangered and vulnerable respectively. Successful reproduction of kākāpō and kākā is linked to years of high levels of fruiting in native flora (mast years). To assess a possible hormonal link between native plants and reproductive success in these parrots in mast years, we examined the ligand-binding domains (LBD) of the progesterone receptor (PR), androgen receptor (AR), estrogen receptor 1 (ESR1) and estrogen receptor 2 (ESR2) in NZ native (kākāpō, kākā, kea and kākāriki) and non-native (Australian cockatiel) parrots and compared them with those in the chicken...
July 11, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28674520/endocrine-disruption-of-vasopressin-systems-and-related-behaviors
#19
REVIEW
Heather B Patisaul
Endocrine disrupting chemicals (EDCs) are chemicals that interfere with the organizational or activational effects of hormones. Although the vast majority of the EDC literature focuses on steroid hormone signaling related impacts, growing evidence from a myriad of species reveals that the nonapeptide hormones vasopressin (AVP) and oxytocin (OT) may also be EDC targets. EDCs shown to alter pathways and behaviors coordinated by AVP and/or OT include the plastics component bisphenol A (BPA), the soy phytoestrogen genistein (GEN), and various flame retardants...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28666461/glyceollins-trigger-anti-proliferative-effects-through-estradiol-dependent-and-independent-pathways-in-breast-cancer-cells
#20
Sylvain Lecomte, Frederic Chalmel, François Ferriere, Frederic Percevault, Nicolas Plu, Christian Saligaut, Claire Surel, Marie Lelong, Theo Efstathiou, Farzad Pakdel
BACKGROUND: Estrogen receptors (ER) α and β are found in both women and men in many tissues, where they have different functions, including having roles in cell proliferation and differentiation of the reproductive tract. In addition to estradiol (E2), a natural hormone, numerous compounds are able to bind ERs and modulate their activities. Among these compounds, phytoestrogens such as isoflavones, which are found in plants, are promising therapeutics for several pathologies. Glyceollins are second metabolites of isoflavones that are mainly produced in soybean in response to an elicitor...
June 30, 2017: Cell Communication and Signaling: CCS
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