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Phytoestrogens

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https://www.readbyqxmd.com/read/29688134/genistein-attenuates-brain-damage-induced-by-transient-cerebral-ischemia-through-up-regulation-of-nrf2-expression-in-ovariectomized-rats
#1
Zhong-Yan Miao, Xu Xia, Lu Che, Yan-Tao Song
OBJECTIVE: Postmenopausal women possess higher incidence of stroke and worse prognosis. Although estrogen replacement therapy has obvious neuroprotective effects against stroke, it is always accompanied with several adverse effects and undesired outcomes. Genistein, a natural phytoestrogen, has been indicated to be a potential neuroprotective alternative for postmenopausal women against stroke. However, the role and mechanism of genistein's neuroprotective effects against stroke in ovariectomized rats have rarely been explored...
April 24, 2018: Neurological Research
https://www.readbyqxmd.com/read/29687165/mechanism-underlying-the-effects-of-estrogen-deficiency-on-otoconia
#2
Liping Yang, Yinfang Xu, Yan Zhang, Sarath Vijayakumar, Sherri M Jones, Yunxia Yesha Wang Lundberg
Otoconia-related vertigo and balance deficits, particularly benign paroxysmal positional vertigo (BPPV), are common. Our recent studies in humans show that, while BPPV prevalence greatly increases with age in both genders, peri-menopausal women are especially susceptible. In the present study, we show that bilateral ovariectomized (OVX) mice have significant balance behavioral deficits, and that estrogen deficiency compromises otoconia maintenance and anchoring by reducing the expression of otoconial component and anchoring proteins...
April 23, 2018: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/29685279/silage-review-animal-and-human-health-risks-from-silage
#3
REVIEW
F Driehuis, J M Wilkinson, Y Jiang, I Ogunade, A T Adesogan
Silage may contain several agents that are potentially hazardous to animal health, the safety of milk or other animal food products, or both. This paper reviews published literature about microbial hazards, plant toxins, and chemical hazards. Microbial hazards include Clostridium botulinum, Bacillus cereus, Listeria monocytogenes, Shiga toxin-producing Escherichia coli, Mycobacterium bovis, and various mold species. High concentrations of C. botulinum in silage have been associated with cattle botulism. A high initial concentration of C...
May 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29679883/protective-effects-of-stigmasterol-against-ketamine-induced-psychotic-symptoms-possible-behavioral-biochemical-and-histopathological-changes-in-mice
#4
Monu Yadav, Milind Parle, Deepak Kumar Jindal, Sameer Dhingra
BACKGROUND: Stigmasterol, a naturally occurring phytoestrogen has been reported to possess many pharmacological activities. The aim of the present study was to screen the effect of stigmasterol against ketamine-induced mice model of psychosis. METHODS: The behavioural studies included an assessment of locomotor activity, stereotypic behaviours, immobility duration, step down latency and effects on catalepsy. Biochemical estimations involved the estimations of GABA, dopamine, GSH, MDA, TNF-α, total protein content and AChE activity...
January 11, 2018: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29676234/low-dose-of-acacetin-promotes-breast-cancer-mcf-7-cells-proliferation-through-the-activation-of-erk-pi3k-akt-signaling-pathway
#5
Huanhuan Ren, Jun Ma, Lingling Si, Boxue Ren, Xiaoyu Chen, Dan Wang, Wenjin Hao, Xuexi Tang, Defang Li, Qiusheng Zheng
Background Phytoestrogens has been proposed as a replaceable medicine for climacteric hormone replacement therapy, according to EP3138562, WO/2017/019213 and US5516528. However, recent studies showed that phytoestrogens might promote the proliferation of breast cancer cells and that is associated with their estrogenic activity. Acacetin, as one phytoestrogen, has been reported to exhibit estrogenic activity. But the effects of Acacetin on breast cancer cells proliferation have not been explored Objective In this study, we evaluated the effects of acacetin on breast cancer MCF-7 cells proliferation and explored its possible mechanism...
April 20, 2018: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/29671937/quercetin-improves-postpartum-hypogalactia-in-milk-deficient-mice-via-stimulating-prolactin-production-in-pituitary-gland
#6
Man Lin, Na Wang, Bei Yao, Yao Zhong, Yan Lin, Tianhui You
Postpartum dysgalactia is a common clinical problem for lactating women. Seeking out the safe and efficient phytoestrogens will be a promising strategy for postpartum dysgalactia therapy. In this study, the postpartum mice within four groups, including control group, the model group, and the treatment groups intragastrically administrated with normal saline, bromocriptine, bromocriptine plus 17α-ethinyl estradiol, and bromocriptine plus quercetin, respectively, were used. The results showed that quercetin, a kind of natural phytoestrogen, could efficiently promote lactation yield and mammary gland development in the agalactosis mice produced by bromocriptine administration...
April 19, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29665798/the-association-between-dietary-isoflavones-intake-and-gastric-cancer-risk-a-meta-analysis-of-epidemiological-studies
#7
Jie You, Yafei Sun, Yacong Bo, Yiwei Zhu, Dandan Duan, Han Cui, Quanjun Lu
BACKGROUND: Isoflavones, a class of phytoestrogenic compounds, are abundant in soybeans. A number of epidemiological studies have investigated the association between dietary isoflavones intake and the risk of gastric cancer. However, the results are inconclusive. Therefore, the meta-analysis was conducted to evaluate the effect of dietary isoflavones intake on the risk of gastric cancer. METHODS: Relevant studies from May 1992 to May 2017 were identified through searching PubMed and Web of Science...
April 17, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29659549/blackcurrant-anthocyanins-increase-the-levels-of-collagen-elastin-and-hyaluronic-acid-in-human-skin-fibroblasts-and-ovariectomized-rats
#8
Naoki Nanashima, Kayo Horie, Hayato Maeda, Toshiko Tomisawa, Maiko Kitajima, Toshiya Nakamura
Blackcurrants ( Ribes nigrum L.) contain high levels of anthocyanin polyphenols, which have beneficial effects on health, owing to their antioxidant and anticarcinogenic properties. Phytoestrogens are plant-derived substances with estrogenic activity, which could have beneficial effects on the skin. Estradiol secretion decreases during menopause, reducing extracellular matrix (ECM) component production by skin fibroblasts. Using a normal human female skin fibroblast cell line (TIG113) and ovariectomized rats, the present study investigated whether an anthocyanin-rich blackcurrant extract (BCE) and four blackcurrant anthocyanins have novel phytoestrogenic activities that could benefit the skin in menopausal women...
April 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29649162/identification-by-molecular-docking-ofhomoisoflavones-from-leopoldia-comosa-as-ligands-of-estrogen-receptors
#9
Fedora Grande, Bruno Rizzuti, Maria A Occhiuzzi, Giuseppina Ioele, Teresa Casacchia, Fabrizio Gelmini, Rita Guzzi, Antonio Garofalo, Giancarlo Statti
The physiological responses to estrogen hormones are mediated within specific tissues by at least two distinct receptors, ER and ER. Several natural and synthetic molecules show activity by interacting with these proteins. In particular, a number of vegetal compounds known as phytoestrogens shows estrogenic or anti-estrogenic activity. The majority of these compounds belongs to the isoflavones family and the most representative one, genistein, shows anti-proliferative effects on various hormone-sensitive cancer cells, including breast, ovarian and prostate cancer...
April 12, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29624291/neonatal-genistein-exposure-and-glucocorticoid-signaling-in-the-adult-mouse-uterus
#10
Shannon D Whirledge, Edwina P Kisanga, Robert H Oakley, John A Cidlowski
BACKGROUND: Female reproductive tract development is sensitive to the endocrine-disrupting potential of environmental estrogens. Early-life exposure to the dietary phytoestrogen genistein impairs fertility and persistently alters the transcriptome in the oviduct and uterus of rodents. Glucocorticoid signaling, which has recently been shown to be essential for normal fertility in the female mouse uterus, is antagonized by genistein. OBJECTIVE: Our goal was to determine whether early-life exposure to genistein disrupts glucocorticoid signaling in the mouse uterus, which may contribute to infertility...
April 5, 2018: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29620230/formononetin-inhibits-colon-carcinoma-cell-growth-and-invasion-by-microrna%C3%A2-149%C3%A2-mediated-ephb3-downregulation-and-inhibition-of-pi3k-akt-and-stat3-signaling-pathways
#11
Ai-Lei Wang, Yong Li, Qun Zhao, Li-Qiao Fan
Formononetin (Form), a phytoestrogen extracted from the roots of Astragalus membranaceus, is one of the fundamental herbs used in traditional Chinese medicine because of its protective effects against certain malignant tumors. However, its role in colon carcinoma cells and the underlying molecular mechanisms have not been completely elucidated. The present study aimed to demonstrate that Form significantly inhibited the proliferation and invasion of the colon carcinoma cell lines SW1116 and HCT116. Mechanistic studies have suggested that Form suppresses colon carcinoma cell growth by downregulating cell cycle‑associated protein (cyclin D1) expression and arresting the cell cycle at the G0‑G1 checkpoint...
April 5, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29608946/phytoestrogens-and-mycoestrogens-interacting-with-breast-cancer-proteins
#12
Diana Montes-Grajales, Esperanza Martínez-Romero, Jesus Olivero-Verbel
Breast cancer is a highly heterogeneous disease influenced by the hormonal microenvironment and the most common malignancy in women worldwide. Some phytoestrogens and mycoestrogens have been epidemiologically linked as risk factors or protectors, however their mechanisms of action are complex and not fully understood. The aim of this study was to predict the potential of 36 natural xenoestrogens to interact with 189 breast cancer proteins using AutoDock Vina. In order to validate our protocol, an in silico docking pose and binding site determination was compared with the crystallographic structure and the power of prediction to distinguish between ligand and decoys was evaluated though a receiver operating characteristic curve (ROC) of the resultant docking affinities and in vitro data...
March 30, 2018: Steroids
https://www.readbyqxmd.com/read/29600624/-protective-effects-of-genistein-on-a%C3%AE-%C3%A2-%C3%A2-induced-pc12-cell-injury-via-regulating-cam-camkiv-signaling-pathway
#13
Biao Cai, Shu Ye, Yan Wang, Ru-Peng Hua, Ting-Ting Wang, Li Jing Lix, Ai-Juan Jiang, Guo-Ming Shen
Genistein is a kind of isoflavone compounds, also called phytoestrogens, with clinical effects on cardiovascular disease, cancer and postmenopausal-related gynecological diseases, and also has the potentiality in the prevention and treatment of Alzheimer's disease(AD). In this study, the protective effect of genistein on Aβ₂₅₋₃₅-induced PC12 cell injury and effect on CaM-CaMKIV signaling pathway were observed to investigate its mechanism for AD. PC12 cells were cultured in vitro and then the safe concentration of genistein and the modeling concentration and optimal time point of administration of Aβ₂₅₋₃₅ were screened by MTT assay...
February 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29582200/pig-testis-extract-augments-adiponectin-expression-and-secretion-through-the-peroxisome-proliferator-activated-receptor-signaling-pathway-in-3t3-l1-adipocytes
#14
Keishi Kadooka, Mikako Sato, Takashi Matsumoto, Satoru Kuhara, Yoshinori Katakura, Tatsuya Fujimura
Adiponectin is a key molecule whose upregulation may ameliorate symptoms of type 2 diabetes mellitus and disorders of lipid metabolism. Several plant-derived components have been shown to enhance adiponectin secretion; however, there have been no reports on the effects of animal-derived products. Therefore, in the current study, we investigated whether hot-water extracts of specific livestock by-products induce the expression of adiponectin in mouse 3T3-L1 adipocytes. Out of the 11 extracts tested, pig testis extract (PTE) was found to enhance adiponectin expression and secretion by 3T3-L1 cells...
March 26, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29578867/the-relationship-between-urinary-genistein-levels-and-serum-alanine-aminotransferase-levels-in-adults-in-the-usa-national-health-and-nutrition-examination-survey-1999-2010
#15
Carolyn Marcelo, Melissa Warwick, Catherine Marcelo, Manpreet Malik, Rehan Qayyum
BACKGROUND: Genistein, a phytoestrogen with similarities to female sex hormones, has been shown to protect against oxidative stress and fibrosis in nonalcoholic fatty liver injury in animal studies. However, few studies have examined genistein's effects on liver function in humans. PARTICIPANTS AND METHODS: We analyzed data from the National Health and Nutrition Examination Survey from 1999 to 2010. Individuals younger than 21 years, with viral hepatitis, or with serum alanine aminotransferase (ALT) at the extremes of distribution (5% on each extreme) were excluded...
March 23, 2018: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29577719/anisamide-anchored-lyotropic-nano-liquid-crystalline-particles-with-aie-effect-a-smart-optical-beacon-for-tumor-imaging-and-therapy
#16
Sandeep Urandur, Venkatesh Teja Banala, Ravi Prakash Shukla, Naresh Mittapelly, Gitu Pandey, Navodayam Kalleti, Kalyan Mitra, Srikanta Kumar Rath, Ritu Trivedi, Pratibha Ramarao, Prabhat Ranjan Mishra
The prospective design of nanocarriers for personalized oncotherapy should be an ensemble of targeting, imaging, and noninvasive therapeutic capabilities. Here in, we report the development of the inverse hexagonal nano liquid crystalline (NLC) particles able to host Formononetin (FMN), a phytoestrogen with known anticancer activity and Tetraphenylethene (TPE), an iconic optical beacon with aggregation-induced-emission (AIE) signature simultaneously. Ordered 3D mesoporous internal structure and high lipid volume fraction of NLC nanoparticles (NLC NPs) frame the outer compartment for the better settlement of payloads...
March 26, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29569839/soy-phytoestrogens-do-not-fully-reverse-changes-in-rat-pituitary-castration-cells-unbiased-stereological-study
#17
Nataša Nestorović, Svetlana Trifunović, Milica Manojlović-Stojanoski, Ivana Jarić, Nataša Ristić, Branko Filipović, Branka Šošić-Jurjević, Verica Milošević
The aim of the study was to examine the potential of the principal soy isoflavones, genistein and daidzein, or isoflavone rich soy extract to recover pituitary castration cells in orchidectomized adult male rats in comparison with the effects of estradiol. Two weeks post orchidectomy (Orx), animals received estradiol-dipropionate, genistein, daidzein or soy extract subcutaneously for 3 weeks. Control sham-operated (So) and Orx rats received just the vehicle. Changes in the volumes of pars distalis, of individual follicle-stimulating hormone (FSH) and luteinizing hormone (LH) containing cells, their volume, numerical density and number were determined by unbiased design-based stereology...
March 23, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29561730/improved-serotonergic-neurotransmission-by-genistein-pretreatment-regulates-symptoms-of-obsessive-compulsive-disorder-in-streptozotocin-induced-diabetic-mice
#18
Pradeep Phadnis, Purnima Dey Sarkar, Mithun Singh Rajput
BACKGROUND: Initial evidences have shown that diabetes mellitus occurs concomitantly with obsessive-compulsive disorder (OCD) symptomatology. Serotonergic psychiatric therapy posits that serotonin is a central character in the management of OCD. Hence, it is worth investigating novel chemical entities affecting the serotonergic system for targeting OCD. An isoflavonoid phytoestrogen, genistein, has been recognized as of great pharmacological value especially for protecting neurodegeneration, depression (serotonin regulation), and diabetes...
March 21, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29558501/the-associations-between-plasma-phytoestrogens-concentration-and-metabolic-syndrome-risks-in-chinese-population
#19
Jie Liu, Shengquan Mi, Li Du, Xiang Li, Peiqin Li, Keyu Jia, Jing Zhao, Hong Zhang, Wenhua Zhao, Ying Gao
Metabolic syndrome (MetS) has become an important issue in the healthcare systems of both developed and developing countries. Phytoestrogens have shown estrogenic effects, which may involve in the etiology of MetS. The current study consisted of 293 MetS cases and 264 healthy controls. The concentrations of seven plasma phytoestrogens (daidzein, genistein, glycitein, equol, enterolactone, enterodiol and coumestrol) were detected by UPLC-MS/MS. Adjusted unconditional logistic regression was used to assess the associations between plasma phytoestrogens concentration and risks of MetS, as well as the associations between plasma phytoestrogens concentration and MetS components...
2018: PloS One
https://www.readbyqxmd.com/read/29548568/effects-of-trifolium-alexandrinum-phytoestrogens-on-oestrous-behaviour-ovarian-activity-and-reproductive-performance-of-ewes-during-the-non-breeding-season
#20
N M Hashem, K M El-Azrak, A N M Nour El-Din, S M Sallam, T A Taha, M H Salem
Phytoestrogens are classified as naturally occurring endocrine disrupting chemicals that may affect reproductive performance of farm animals. To investigate the effects of Berseem clover phytoestrogens on reproductive performance of seasonal anoestrus ewes, twenty four late pregnant Rahmani ewes were fed either Berseem clover or maize silage (n = 12/treatment). Treatment started 2 months prepartum and continued until oestrous induction (week 8 postpartum), using the CIDR-eCG based protocol, and early pregnancy...
March 8, 2018: Animal Reproduction Science
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