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Isoflavones

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https://www.readbyqxmd.com/read/29779250/soy-protein-supplement-intake-for-12-months-has-no-effect-on-sexual-maturation-and-may-improve-nutritional-status-in-pre-pubertal-children
#1
Sandra M Duitama, Javier Zurita, Diana Cordoba, Paola Duran, Leopold Ilag, Wilson Mejia
AIM: To evaluate the intake of a soy protein-based supplement (SPS) and its effects on the sexual maturation and nutritional status of prepubertal children who consumed it for a year. METHODS: Healthy children (n = 51) were recruited and randomly assigned to consume the lunch fruit juice with (n = 29) or without (n = 22) addition of 45 g of a commercial soy protein-based supplement (SPS) over 12 months. Nutritional assessment including anthropometry (bodyweight, height, triceps skinfold thickness, mid-upper arm circumference), body mass index (BMI), upper arm muscle area, arm muscle circumference, upper arm area, upper arm fat area data were derived from measures using usual procedures; age and gender-specific percentiles were used as reference...
May 20, 2018: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29777703/bacterial-metabolite-s-equol-modulates-glucagon-like-peptide-1-secretion-from-enteroendocrine-l-cell-line-glutag-cells-via-actin-polymerization
#2
Kazuki Harada, Shoko Sada, Hidekazu Sakaguchi, Mai Takizawa, Rika Ishida, Takashi Tsuboi
S-equol is one of gut bacterial metabolites produced from soybean isoflavone daizein. While S-equol is known to promote glucose-induced insulin secretion from pancreatic β cells, whether S-equol affects glucagon-like peptide-1 (GLP-1) secretion from enteroendoceine L cells remains unclear. Here we assessed the effect of S-equol on GLP-1 secretion from mouse enteroendocrine L cell line GLUTag cells. GLUTag cells expressed GPR30 and estrogen receptors, which are putative S-equol receptors. Application of S-equol induced an increase in intracellular Ca2+ levels via GPR30...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29772836/soybean-hop-alleviates-estrogen-deficiency-related-bone-loss-and-metabolic-dysfunction-in-ovariectomized-rats-fed-a-high-fat-diet
#3
Dasom Noh, Yeni Lim, Hansol Lee, Hyejin Kim, Oran Kwon
Soybeans and hops have been traditionally used as a natural estrogen replacement therapy and their major active ingredients, isoflavones and prenylflavanones, are known to have estrogenic/antiestrogenic effects depending on the target organ. However, their potential benefits are still subject to controversies. The present study investigated the dual effect of soy isoflavones plus hop prenylflavanones (Soy-Hop) on bone loss and metabolic dysfunction under estrogen deficient condition. Rats were sham-operated ( n = 10) or ovariectomized (OVX; n = 40) and then fed a high-fat diet (HFD) to develop hyperlipidemia in OVX rats within the experimental period of 8 weeks...
May 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29768032/flavonoid-subclasses-and-type-2-diabetes-mellitus-risk-a-meta-analysis-of-prospective-cohort-studies
#4
Xiao-Fei Guo, Yue Ruan, Zi-Hao Li, Duo Li
Epidemiological studies have suggested controversial associations between flavonoid subclasses and type 2 diabetes mellitus (T2DM) risk. The aim of the present meta-analysis was to quantitatively estimate these associations with prospective cohort study. A systematic literature search in PubMed and Scopus databases was performed up to May 2018. Multivariate-adjust relative risks (RRs) with corresponding 95% confidence intervals (CIs) for the highest versus the lowest category were pooled by using a random-effects model...
May 16, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29766782/role-of-oxidative-stress-in-diabetic-retinopathy-and-the-beneficial-effects-of-flavonoids
#5
Mohammad Shamsul Ola, Dalia Al-Dosari, Abdullah S Alhomida
Diabetic retinopathy (DR) is one of the leading causes of decreased vision and blindness in developed countries. Diabetes-induced metabolic disorder is believed to increase oxidative stress in the retina. This results in deleterious changes through dysregulation of cellular physiology that damages both neuronal and vascular cells. Here in this review, we first highlight the evidence of potential metabolic sources and pathways which increase oxidative stress that contributes to retinal pathology in diabetes...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29765921/therapeutic-approaches-to-atrophic-vaginitis-in-postmenopausal-women-a-systematic-review-with-a-network-meta-analysis-of-randomized-controlled-trials
#6
Arum Lee, Tae Hee Kim, Hae Hyeog Lee, Yeon Suk Kim, Temuulee Enkhbold, Bora Lee, Yoo Jin Park, Kisung Song
Objectives: Atrophic vaginitis (AV), which is common in postmenopausal women, is characterized by vaginal dryness, dyspareunia, and discomfort. There are a variety of therapeutic agents for the treatment of AV, besides hormone replacement therapy. We performed this systematic review to compare the effectiveness of various therapies for symptom improvement in AV patients. Methods: We searched the Cochrane Library, EMBASE, MEDLINE, and other literature (Google Scholar, Web of Science, and hand search) for studies published between January 2010 and March 2015...
April 2018: Journal of Menopausal Medicine
https://www.readbyqxmd.com/read/29763383/eb-2017-article-soy-protein-isolate-feeding-does-not-result-in-reproductive-toxicity-in-the-pre-pubertal-rat-testis
#7
Martin Jj Ronis, Horacio Gomez-Acevedo, Kartik Shankar, Neha Sharma, Michael Blackburn, Rohit Singhal, Kelly E Mercer, Thomas M Badger
The isoflavone phytoestrogens found in the soy protein isolate used in soy infant formulas have been shown to have estrogenic actions in the developing male reproductive tract resulting in reproductive toxicity. However, few studies have examined potential estrogenicity of soy protein isolate as opposed to that of pure isoflavones. In this study, we fed weanling male Sprague-Dawley rats a semi-purified diet with casein or soy protein isolate as the sole protein source from postnatal day 21 to 33. Additional groups were fed casein or soy protein isolate and treated s...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29762033/isolation-synthesis-and-antisepsis-effects-of-a-c-methylcoumarinochromone-isolated-from-abronia-nana-cell-culture
#8
Wonhwa Lee, Doohyun Lee, Yuri Lee, Taeho Lee, Kyung-Sik Song, Eun-Ju Yang, Jong-Sup Bae
Only a few isoflavones have been isolated from plants of the genus Abronia. The biological properties of compounds isolated from Abronia species have not been well established, and their antisepsis effects have not been reported yet. In the present study, a new C-methylcoumarinochromone, was isolated from Abronia nana suspension cultures. Its structure was deduced as 9,11-dihydroxy-10-methylcoumarinochromone (boeravinone Y, 1) by spectroscopic data analysis and verified by chemical synthesis. The potential inhibitory effects of 1 against high mobility group box 1 (HMGB1)-mediated septic responses were investigated...
May 15, 2018: Journal of Natural Products
https://www.readbyqxmd.com/read/29761845/the-o-methylated-isoflavone-formononetin-inhibits-human-ovarian-cancer-cell-proliferation-by-sub-g0-g1-cell-phase-arrest-through-pi3k-akt-and-erk1-2-inactivation
#9
Sunwoo Park, Fuller W Bazer, Whasun Lim, Gwonhwa Song
Formononetin is an isoflavone that is extracted from red clovers or soy. It has anti-oxidant, anti-proliferative, and anti-tumor effects against cells in various diseases. Several cohort studies have indicated that phytoestrogen intake, including formononetin, could reduce the risk of various carcinogenesis. In fact, many case-control studies have indicated the potential value of flavonoids as drug supplements in the treatment of many cancer patients. However, the toxic effects and the anti-cancer mechanism of formononetin in ovarian cancer are unknown...
May 15, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29759310/flavanols-are-potential-anti-obesity-agents-a-systematic-review-and-meta-analysis-of-controlled-clinical-trials
#10
M Akhlaghi, S Ghobadi, M Mohammad Hosseini, Z Gholami, F Mohammadian
BACKGROUND: The anti-obesity potential of flavonoids has been shown by animal and human studies. In this meta-analysis, we systematically reviewed controlled clinical trials and quantified the effects of flavonoids and flavonoid subclasses on obesity-related anthropometric measures. METHODS AND RESULTS: PubMed, EMBASE, Scopus, Web of Science, and ProQuest databases were searched to identify trials examining the effect of flavonoids on body mass index (BMI), waist circumference, and body fat percentage...
April 13, 2018: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29757972/short-term-soy-protein-isolate-feeding-prevents-liver-steatosis-and-reduces-serum-alt-and-ast-levels-in-obese-female-zucker-rats
#11
Reza Hakkak, Clinton Heath Gauss, Andrea Bell, Soheila Korourian
Non-alcoholic fatty liver disease is a common liver disorder worldwide and is associated with obesity. We investigated effects of obesity and short-term intake of soy protein with isoflavones (SPI) on body weight change, energy intake, liver steatosis, and serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), and leptin levels. Seventeen lean and seventeen obese ( fa / fa ) female Zucker rats were randomly assigned to either casein or SPI diet for 8 weeks. Body weight was recorded twice weekly; feed intake was measured weekly...
May 14, 2018: Biomedicines
https://www.readbyqxmd.com/read/29754011/prolonged-exposure-of-dietary-phytoestrogens-on-semen-characteristics-and-reproductive-performance-of-rabbit-bucks
#12
N M Hashem, M A Abo-Elsoud, A N M Nour El-Din, K I Kamel, G A Hassan
The effects of inclusion of different sources of dietary phytoestrogens on antioxidant capacity, hormonal balance, libido, semen quality, and fertility of rabbit bucks were studied. Twenty-one, adult, fertile, V-line bucks were randomly allocated into 3 homogenous groups (n = 7/treatment) and received control diet (phytoestrogens-free diet, CON) or soybean meal isoflavones-containing diet (SMI) or linseed meal lignans-containing diet (LML) for 12 wk. The diets were formulated to be isocaloric and isonitrogenous...
March 28, 2018: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/29745202/-transcriptome-analysis-of-response-to-heavy-metal-cd-stress-in-soybean-root
#13
Xiao Na Zhang, Chun Lan Piao, You Kui Dong, Min Long Cui
Cadmium (Cd) is a common pollutant not required for life activities, which can have extremely strong toxicity to organisms and affect the growth of crops at a low concentration in soil. To investigate the molecular mechanism of soybean root responding to Cd stress, 7-day old soybean seedlings were stressed by Cd (75 Μmol·L-1 ) for 0 , 4 , 8, 12 and 48 h. Comparative transcriptome analysis showed 244, 1545, 442 and 1401 of genes responded to the four Cd treatments, respectively, and total 2670 differential expression genes were obtained...
May 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29744673/a-highly-glucose-tolerant-gh1-%C3%AE-glucosidase-with-greater-conversion-rate-of-soybean-isoflavones-in-monogastric-animals
#14
Huifang Cao, Yueqi Zhang, Pengjun Shi, Rui Ma, Hong Yang, Wei Xia, Ying Cui, Huiying Luo, Yingguo Bai, Bin Yao
In the feed industry, β-glucosidase has been widely used in the conversion of inactive and bounded soybean isoflavones into active aglycones. However, the conversion is frequently inhibited by the high concentration of intestinal glucose in monogastric animals. In this study, a GH1 β-glucosidase (AsBG1) with high specific activity, thermostability and glucose tolerance (IC 50  = 800 mM) was identified. It showed great glucose tolerance against substrates with hydrophobic aryl ligands (such as pNPG and soy isoflavones)...
May 9, 2018: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29743865/somatopause-weaknesses-of-the-therapeutic-approaches-and-the-cautious-optimism-based-on-experimental-ageing-studies-with-soy-isoflavones
#15
REVIEW
Vladimir Z Ajdžanovic, Svetlana Trifunovic, Dragana Miljic, Branka Šošic-Jurjevic, Branko Filipovic, Marko Miler, Nataša Ristic, Milica Manojlovic-Stojanoski, Verica Miloševic
The pathological phenomenon of somatopause, noticeable in hypogonadal ageing subjects, is based on the growth hormone (GH) production and secretion decrease along with the fall in GH binding protein and insulin-like growth factor 1 (IGF-1) levels, causing different musculoskeletal, metabolic and mental issues. From the perspective of safety and efficacy, GH treatment is considered to be highly controversial, while some other therapeutic approaches (application of IGF-1, GH secretagogues, gonadal steroids, cholinesterase-inhibitors or various combinations) exhibit more or less pronounced weaknesses in this respect...
2018: EXCLI journal
https://www.readbyqxmd.com/read/29742713/flavonoids-intake-and-risk-of-type-2-diabetes-mellitus-a-meta-analysis-of-prospective-cohort-studies
#16
Hui Xu, Jia Luo, Jia Huang, Qian Wen
Epidemiological studies exploring the role of flavonoids intake in preventing type 2 diabetes mellitus (T2DM) showed inconsistent results. Therefore, we performed a meta-analysis of relevant studies to examine the relationship between flavonoids intake and risk of T2DM. We hypothesized that flavonoids intake may decrease the risk of developing T2DM.A systematical search in PubMed and Embase until September 2017 was performed to identify eligible prospective cohort studies. The summary relative risks (RRs) and 95% confidence intervals (CIs) were calculated using random-effect models...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29739677/soy-isoflavones-improve-cardiovascular-disease-risk-markers-in-women-during-the-early-menopause
#17
T Sathyapalan, M Aye, A S Rigby, N J Thatcher, S R Dargham, E S Kilpatrick, S L Atkin
BACKGROUND: Hormone replacement therapy may be beneficial for cardiovascular disease risk (CVR) in post-menopausal women. Soy isoflavones may act as selective estrogen receptor modulators. The aim of this study was to evaluate whether soy isoflavones had an effect on CVR markers. METHODS: The expected 10-year risk of cardiovascular disease and mortality were calculated as a secondary endpoint from a double blind randomised parallel study involving 200 women (mean age 55 years, Caucasian, Hull, UK, 2012) in the early menopause who were randomised to 15 g soy protein with 66 mg isoflavone (SPI) or 15 g soy protein alone (depleted of all isoflavones; SP) given as a snack bar between meals daily for 6 months...
April 10, 2018: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29739609/the-conversion-and-deglycosylation-of-isoflavones-and-anthocyanins-in-black-soymilk-process
#18
Yu-Hsuan Hsiao, Jung-Feng Hsieh
The conversion of isoflavones and anthocyanins during black soymilk processing including soaking and heating was investigated. During soaking procedure, the β-glucosidase activity, content of bioactive compounds including daidzein, genistein, delphinidin and cyanidin were significantly increased by deglycosylation reaction. After heating treatment at 90 °C for 1 h, the content of isoflavones β-glucosides including daidzin, glycitin and genistin were increased through a de-esterification reaction from malonyl-glucosides at high temperature...
September 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29729886/functional-expression-and-purification-of-cyp93c20-a-plant-membrane-associated-cytochrome-p450-from-medicago-truncatula
#19
Zhenzhan Chang, Xiaoqiang Wang, Risheng Wei, Zhouying Liu, Hong Shan, Guizhen Fan, Hongli Hu
Plants possess very large numbers of biosynthetic cytochrome P450 enzymes. In spite of the importance of these enzymes for the synthesis of bioactive plant secondary metabolites, only two plant P450 structures has been obtained to date. Isoflavone synthase (IFS) is a membrane-associated cytochrome P450 enzyme catalyzing the entry-point reaction into isoflavonoid biosynthesis. IFS from the model legume Medicago truncatula (CYP93C20) was engineered by deleting the membrane-spanning domain and inserting a hydrophilic polypeptide in the N-terminus and a four histidine tag at the C-terminus...
May 3, 2018: Protein Expression and Purification
https://www.readbyqxmd.com/read/29727783/comparative-analysis-of-sixteen-flavonoids-from-different-parts-of-sophora-flavescens-ait-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#20
Zebin Weng, Fei Zeng, Zhenhua Zhu, Dawei Qian, Sheng Guo, Hanqing Wang, Jin-Ao Duan
The root of Sophora flavescens Ait. has long been used as a crude drug in China and other Asian countries for thousands of years. The quinolizidine alkaloids and flavonoids are considered as the main bioactive components in this plant. To determine the distribution and content of the flavonoids in different organs of this plant, a rapid, sensitive and reproducible method was established using ultra-high-performance liquid chromatography coupled with a triple quadrupole electrospray tandem mass spectrometry...
April 26, 2018: Journal of Pharmaceutical and Biomedical Analysis
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