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https://www.readbyqxmd.com/read/29156573/neuraminidase-inhibitory-activity-and-constituent-characterization-of-fagopyrum-dibotrys
#1
Xiang Zhang, Yu Cao, Jinhua Li, Ailin Liu, Haibo Liu, Linfang Huang
This study aimed to identify a new biological activity of the widely distributed species Fagopyrum dibotrys. Four F. dibotrys extracts (ethyl acetate (EA), petroleum ether (P), ethanol (E), and water (W)) were explored for their anti-neuraminidase (NA) activity. A total of 32 compounds were identified using UHPLC-Q-Exactive Orbitrap HRMS in the EA extract, which had the best NA inhibitory effects. We used the docking data for supporting compounds' anti-neuraminidase activity. Among them, five compounds including one flavonoid, three organic acids, and one glucoside were discovered for the first time in F...
November 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29151126/nutritional-programming-of-bone-structure-in-male-offspring-by-maternal-consumption-of-citrus-flavanones
#2
Sandra M Sacco, Caitlin Saint, Paul J LeBlanc, Wendy E Ward
Maternal exposure to hesperidin (HSP) and naringin (NAR) during pregnancy and lactation transiently compromised bone mineral density (BMD) and bone structure at the proximal tibia in female CD-1 offspring. We examined whether maternal consumption of HSP + NAR during pregnancy and lactation compromises BMD, bone structure, and bone strength in male CD-1 offspring. Male CD-1 offspring, from mothers fed a control diet (CON, n = 10) or a 0.5% HSP + 0.25% NAR diet (HSP + NAR, n = 8) for 5 weeks before mating and throughout pregnancy and lactation, were weaned and fed CON until 6 months of age...
November 18, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29142606/hesperidin-inhibits-ovarian-cancer-cell-viability-through-endoplasmic-reticulum-stress-signaling-pathways
#3
Jun Zhao, Yali Li, Jinfang Gao, Yinshan De
Hesperidin is a vitamin P flavonoid compound primarily present in citrus fruits. The aim of the present study was to investigate whether hesperidin inhibits ovarian cancer cell viability via endoplasmic reticulum stress signaling pathways. A2780 cells were treated with various doses of hesperidin for 6, 12 or 24 h, and the viability of A2780 cells was assessed using the MTT assay. Hesperidin decreased the viability of A2780 cells and increased cytotoxicity in a dose- and time-dependent manner. In addition, hesperidin induced apoptosis and increased cleaved caspase-3 protein expression levels in A2780 cells...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29138795/hesperidin-induces-apoptosis-and-g0-g1-arrest-in-human-non-small-cell-lung-cancer-a549-cells
#4
Rongmu Xia, Xin Sheng, Xianlin Xu, Chunbo Yu, Hongling Lu
Lung cancer has high incidence and mortality rates worldwide. In the present study, the mechanisms by which hesperidin decreases the viability and induces the apoptosis of human non-small cell lung cancer (NSCLC) A549 cells were investigated. Initially, MTT and flow cytometric assays were performed to evaluate the effects of hesperidin on the viability and apoptosis of A549 cells and human normal lung epithelial BEAS-2B cells. The results revealed that hesperidin has no negative effects on the human normal lung epithelial BEAS-2B cells and the viability of cells treated with various concentrations of hesperidin was inhibited in a time- and dose-dependent manner compared with the control groups...
November 9, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29124335/rhamnosidase-activity-of-selected-probiotics-and-their-ability-to-hydrolyse-flavonoid-rhamnoglucosides
#5
Monika Mueller, Barbara Zartl, Agnes Schleritzko, Margit Stenzl, Helmut Viernstein, Frank M Unger
Bioavailability of flavonoids is low, especially when occurring as rhamnoglucosides. Thus, the hydrolysis of rutin, hesperidin, naringin and a mixture of narcissin and rutin (from Cyrtosperma johnstonii) by 14 selected probiotics was tested. All strains showed rhamnosidase activity as shown using 4-nitrophenyl α-L-rhamnopyranoside as a substrate. Hesperidin was hydrolysed by 8-27% after 4 and up to 80% after 10 days and narcissin to 14-56% after 4 and 25-97% after 10 days. Rutin was hardly hydrolysed with a conversion rate ranging from 0 to 5% after 10 days...
November 10, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29115547/preventive-effect-of-hesperidin-modulates-inflammatory-responses-and-antioxidant-status-following-acute-myocardial-infarction-through-the-expression-of-ppar%C3%A2-%C3%AE-and-bcl%C3%A2-2-in-model-mice
#6
Chunying Meng, Zeheng Guo, Dagang Li, Hanwei Li, Jianbin He, Dingguo Wen, Bin Luo
Hesperetin is the main pharmacological ingredient of fruit of the citrus family, rutaceae. It is a flavanone, which has potent antioxidation and anti‑inflammatory activities. The present study investigated the preventive effect of hesperidin in the modulation of acute myocardial infarction (AMI)‑induced inflammatory responses and antioxidant status in a mouse model. The levels of creatine kinase‑MB, tumor necrosis factor (TNF‑α), interleukin (IL)‑1β, IL‑6, monocyte chemoattractant protein 1 (MCP‑1), intercellular adhesion molecule 1 (ICAM‑1), malondialdehyde (MDA), catalase (CAT), superoxide dismutase (SOD) and caspase‑3/9 were measured using ELISA kits...
November 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29113871/oxidative-stress-and-dietary-phytochemicals-role-in-cancer-chemoprevention-and-treatment
#7
Shireen Chikara, Lokesh Dalasanur Nagaprashantha, Jyotsana Singhal, David Horne, Sanjay Awasthi, Sharad S Singhal
Several epidemiological observations have shown an inverse relation between consumption of plant-based foods, rich in phytochemicals, and incidence of cancer. Phytochemicals, secondary plant metabolites, via their antioxidant property play a key role in cancer chemoprevention by suppressing oxidative stress-induced DNA damage. In addition, they modulate several oxidative stress-mediated signaling pathways through their anti-oxidant effects, and ultimately protect cells from undergoing molecular changes that trigger carcinogenesis...
November 4, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29100031/research-on-major-antitumor-active-components-in-zi-cao-cheng-qi-decoction-based-on-hollow-fiber-cell-fishing-with-high-performance-liquid-chromatography
#8
Miaomiao Li, Shuang Hu, Xuan Chen, Runqin Wang, Xiaohong Bai
Hollow fiber cell fishing (HFCF) based on hepatoma HepG-2 cells, human renal tubular ACHN cells or human cervical carcinoma HeLa cells, coupled with high-performance liquid chromatography (HPLC), was developed and employed to research the major active components in Zi-Cao-Cheng-Qi decoction both in vitro and in vivo. The research showed that the active components, such as hesperidin, magnolol, honokiol, shikonin, emodin and β,β'-dimethylacrylshikonin were screened out by HFCF based on the cancer cells in vitro, furthermore they can be absorbed into blood and reach in the target organ, and some of the active components can be fished by the cells and maintain effective concentrations...
October 28, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29082695/-study-on-relationship-between-efficacy-against-lung-cancer-and-different-parts-of-schizonepeta-tenuifolia-based-on-microfluidic-chip-technology
#9
Jia-Xin Fan, Yong-Rui Bao, Xian-Sheng Meng, Shuai Wang, Tian-Jiao Li
In order to further clarify the rational use of different medicinal parts of Schizonepeta, microfluidic technology was used in this study to investigate the differences in drug efficacy against lung cancer in vitro. The ethanol extracts were examined with HPLC to establish their fingerprints in order to analyze the relationship between the spectrum and efficacy index through Grey Correlation software, and a rapid HPLC-Q-TOF/MS method was established. The result in vitro shows that the effect and components of different medicinal parts had a certain differences, and apoptosis and necrosis rate from big to small in turn is leaf, flower, root, stem...
May 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29054047/application-of-transglycosylated-stevia-and-hesperidin-as-drug-carriers-to-enhance-biopharmaceutical-properties-of-poorly-soluble-artemisinin
#10
Kumaran Letchmanan, Shou-Cang Shen, Wai Kiong Ng, Reginald B H Tan
Biopharmaceutical properties of poorly water-soluble antimalarial drug, Artemisinin (ART), were improved by formulating amorphous solid dispersions with transglycosylated food additives (Hsp-G and Stevia-G) via co-spray drying. Both the formulated ART/Hsp-G and ART/Stevia-G showed superior dissolution properties with a burst release of more than 95% of drug within 5 min, whereas untreated ART dissolved only 4% in 5min. The supersaturation solubility of the formulated ART was enhanced by 2-fold as compared with untreated counterpart...
October 7, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29042280/biochemical-and-biophysical-characterization-of-a-mycoredoxin-protein-glutaredoxin-a1-from-corynebacterium-pseudotuberculosis
#11
Raphael J Eberle, Liege A Kawai, Fabio R de Moraes, Ljubica Tasic, Raghuvir K Arni, Monika A Coronado
Glutaredoxin A1 from Corynebacterium pseudotuberculosis was shown to be a mycoredoxin protein. In this study, we established a process to overexpress and purify glutaredoxin A1. The aim of this study was the investigation of the Glutaredoxin A1 from C. pseudotuberculosis behavior under different redox environments and the identification of lead molecules, which can be used for specific inhibitor development for this protein family. A quantitative assay was performed measuring the rate of insulin reduction spectrophotometrically at 640nm through turbidity formation from the precipitation of the free insulin...
October 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29023808/enhancement-of-the-water-solubility-and-antioxidant-activity-of-hesperidin-by-chitooligosaccharide
#12
Ruge Cao, Yali Zhao, Zhongkai Zhou, Xiaoyu Zhao
BACKGROUND: Hesperidin is a natural product and a strong antioxidant with potential applications in various food and pharmaceutical products. However, its poor water solubility greatly limits its applications. RESULTS: In this study, chitooligosaccharide (COS) was applied to prepare a stable complex with hesperidin (Hesp-COS) via spray-drying method at 100 °C for 20 min. The resultant complex was characterized by Fourier transformation infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and proton nuclear magnetic resonance spectroscopy...
October 10, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29023372/parp-inhibition-by-flavonoids-induced-selective-cell-killing-to-brca2-deficient-cells
#13
Cathy Su, Alexis H Haskins, Chisato Omata, Yasushi Aizawa, Takamitsu A Kato
High consumption of dietary flavonoids might contribute to a reduction of cancer risks. Quercetin and its glycosides have PARP inhibitory effects and can induce selective cytotoxicity in BRCA2-deficient cells by synthetic lethality. We hypothesized that common flavonoids in diet naringenin, hesperetin and their glycosides have a similar structure to quercetin, which might have comparable PARP inhibitory effects, and can induce selective cytotoxicity in BRCA2-deficient cells. We utilized Chinese hamster V79 wild type, V-C8 BRCA2-deficient and its gene-complemented cells...
October 12, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/29017654/-therapeutic-effect-of-hesperidin-on-severe-acute-pancreatitis-in-rats-and-its-mechanism
#14
Min Li, Zhisong Guo, Huanzhang Shao, Bingyu Qin
OBJECTIVE: To investigate the protective effect of hesperidin on severe acute pancreatitis (SAP) in rats and its related mechanism. METHODS: Sixty male Sprague-Dawley (SD) rats were randomly divided into five groups (n = 12 in each group): sham group, SAP model group, dexamethasone group (5 mg/kg), low and high dose of hesperidin groups (10 mg/kg and 20 mg/kg). SAP rats were administered a retrograde infusion of 3.5% sodium taurocholate solution into the biliopancreatic duct after laparotomy...
October 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28983192/the-role-of-polyphenols-in-modern-nutrition
#15
REVIEW
G Williamson
Polyphenols are found in plant-based foods and beverages, notably apples, berries, citrus fruit, plums, broccoli, cocoa, tea and coffee and many others. There is substantial epidemiological evidence that a diet high in polyphenol-rich fruit, vegetables, cocoa and beverages protects against developing cardiovascular disease and type 2 diabetes. The absorption and metabolism of these compounds have been well described and, for many, the gut microbiota play a critical role in absorption; taking into consideration the parent compound and the metabolites from colon bacteria catabolism, more than 80% of a dose can be absorbed and ultimately excreted in the urine...
September 2017: Nutrition Bulletin
https://www.readbyqxmd.com/read/28980170/improved-conversion-of-ginsenoside-rb1-to-compound-k-by-semi-rational-design-of-sulfolobus-solfataricus-%C3%AE-glycosidase
#16
Kyung-Chul Shin, Hye-Yeon Choi, Min-Ju Seo, Deok-Kun Oh
Ginsenoside compound K has been used as a key nutritional and cosmetic component because of its anti-fatigue and skin anti-aging effects. β-Glycosidase from Sulfolobus solfataricus (SS-BGL) is known as the most efficient enzyme for compound K production. The hydrolytic pathway from ginsenoside Rb1 to compound K via Rd and F2 is the most important because Rb1 is the most abundant component in ginseng extract. However, the enzymatic conversion of ginsenoside Rd to F2 is a limiting step in the hydrolytic pathway because of the relatively low activity for Rd...
October 4, 2017: AMB Express
https://www.readbyqxmd.com/read/28967287/solidification-of-hesperidin-nanosuspension-by-spray-drying-optimized-by-design-of-experiment-doe
#17
Qionghua Wei, Cornelia M Keck, Rainer H Müller
OBJECTIVE: To accelerate the determination of optimal spray drying parameters, a "Design of Experiment" (DoE) software was applied to produce well redispersible hesperidin nanocrystals. SIGNIFICANCE: For final solid dosage forms, aqueous liquid nanosuspensions need to be solidified, whereas spray drying is a large-scale cost-effective industrial process. METHODS: A nanosuspension with 18% (w/w) of hesperidin stabilized by 1% (w/w) of poloxamer 188 was produced by wet bead milling...
October 11, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28958537/optimization-of-low-power-ultrasound-assisted-extraction-of-phenolic-compounds-from-mandarin-citrus-reticulata-blanco-cv-sainampueng-peel
#18
Suriyaporn Nipornram, Worasit Tochampa, Puntarika Rattanatraiwong, Riantong Singanusong
Mandarin peel is a good source of phenolic compounds, which can be extracted by the ultrasound-assisted extraction (UAE) method. This research was to optimize the UAE conditions for maximum mandarin peel extract (MPE) relating to the extract yield, total phenolic content and the content of a mandarin peel rich flavonoid, hesperidin, using a response surface method comparing with the maceration extraction (MAE) method. The results showed that the selected factors (temperature, time and power) have a significant influence on the extraction yield, total phenolic content and hesperidin content...
February 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28942652/polyphenols-from-blossoms-of-citrus-aurantium-l-var-amara-engl-show-significant-anti-complement-and-anti-inflammatory-effects
#19
Chun-Yan Shen, Jian-Guo Jiang, Chun-Ling Huang, Wei Zhu, Chao-Yang Zheng
Citrus aurantium L. var. amara Engl. (CAVA) was traditionally used as a digestant or expectorant in China. Crude polyphenols (CAVAP-W) extracted from blossoms of CAVA were mainly composed of eriocitrin/neoeriocitrin, eriocitrin/neoeriocitrin, rhoifolin, hesperidin, naringin, rutin, veronicastroside, neohesperidin, and hesperetin by LC-MS analysis. CAVAP-W showed significant anticomplement and anti-inflammatory effects. Due to the close relationship between anticomplement and anti-inflammatory activity, the anti-inflammatory effect was further investigated and the results showed that CAVAP-W significantly suppressed production of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), and mRNA expression of inducible nitric oxide synthase (iNOS), IL-6, TNF-α, IL-1β, and cyclooxygenase-2 (COX-2) in lipopolysaccharides-stimulated RAW264...
October 9, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28938495/polyphenol-enriched-fractions-of-cyclopia-intermedia-selectively-affect-lipogenesis-and-lipolysis-in-3t3-l1-adipocytes
#20
Babalwa U Jack, Christiaan J Malherbe, Elize L Willenburg, Dalene de Beer, Barbara Huisamen, Elizabeth Joubert, Christo J F Muller, Johan Louw, Carmen Pheiffer
Cyclopia species are increasingly investigated as sources of phenolic compounds with potential as therapeutic agents. Recently, we demonstrated that a crude polyphenol-enriched organic fraction (CPEF) of Cyclopia intermedia, currently forming the bulk of commercial production, decreased lipid content in 3T3-L1 adipocytes and inhibited body weight gain in obese db/db mice. The aim of the present study was to determine whether a more effective product and/or one with higher specificity could be obtained by fractionation of the CPEF by purposely increasing xanthone and benzophenone levels...
September 22, 2017: Planta Medica
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