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naringenin

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https://www.readbyqxmd.com/read/27915399/naringenin-interferes-with-the-anti-diabetic-actions-of-pioglitazone-via-pharmacodynamic-interactions
#1
Hiroki Yoshida, Rika Tsuhako, Toshiyuki Atsumi, Keiko Narumi, Wataru Watanabe, Chihiro Sugita, Masahiko Kurokawa
Pioglitazone is a peroxisome proliferator-activated receptor gamma (PPARγ) full agonist and useful for the treatment of type 2 diabetes mellitus. Naringenin is a citrus flavonoid with anti-inflammatory actions, which has been shown to prevent obesity-related diseases and to activate PPARγ. The aim of this study was to investigate whether dietary naringenin affects the actions of pioglitazone. We administered naringenin (100 mg/kg) and pioglitazone (10 mg/kg) to Tsumura Suzuki Obese Diabetes (TSOD) mice for 4 weeks and then conducted an oral glucose tolerance test...
December 3, 2016: Journal of Natural Medicines
https://www.readbyqxmd.com/read/27910780/naringenin-ameliorates-doxorubicin-toxicity-and-hypoxic-condition-in-dalton-s-lymphoma-ascites-tumor-mouse-model-evidence-from-electron-paramagnetic-resonance-imaging
#2
Venkatesan Kathiresan, Swathika Subburaman, Arun Venkatesh Krishna, Mathivanan Natarajan, Gandhidasan Rathinasamy, Kumaresan Ganesan, Murugesan Ramachandran
Doxorubicin (DOX) is a well-known cytotoxic agent used extensively as a chemotherapeutic drug to eradicate a wide variety of human cancers. Reactive oxygen species (ROS)-mediated oxidative stress during DOX treatment can induce cardiac, renal, and hepatic toxicities, which can constrain its use as a potential cytotoxic agent. The present work investigates the antioxidant potential of naringenin (NAR) against DOXinduced toxicities of a Dalton's lymphoma ascites (DLA) tumor-bearing mouse model. Mice were randomized into four groups: a negative control, positive control, DOX (2...
2016: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/27904048/inhibitory-effect-of-hesperetin-and-naringenin-on-human-udp-glucuronosyltransferase-enzymes-implications-for-herb-drug-interactions
#3
Dan Liu, Jie Wu, Hongbo Xie, Mingyi Liu, Isaiah Takau, Hong Zhang, Yuqing Xiong, Chunhua Xia
Hesperetin (HET) and naringenin (NGR) are flavanones found in citrus (oranges and grapefruit) and Aurantii Fructus Immaturus. The present study aims to investigate the inhibition potential of HET and NGR derivatives towards one of the most important phase II drug-metabolizing enzymes-uridine diphosphate (UDP)-glucuronosyltransferases (UGTs). We used trifluoperazine as a probe substrate to test UGT1A4 activity, and recombinant UGT-catalyzed 4-methylumbelliferone glucuronidation was used as a probe reaction for other UGT isoforms...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27890083/anticoccidial-efficacy-of-naringenin-and-a-grapefruit-peel-extract-in-growing-lambs-naturally-infected-with-eimeria-spp
#4
Agustín Pérez-Fonseca, Yazmin Alcala-Canto, Abdelfattah Z M Salem, Aldo B Alberti-Navarro
The current study aimed to determine the anti-Eimeria efficacy of an extract of grapefruit peels (GF) and commercial naringenin (NAR) in naturally-infected lambs, as well as the influence of these flavonoids on the oxidative status during ovine coccidiosis. Pharmacokinetic profiles were also determined. Extracts were administered per os to Eimeria naturally infected growing lambs during 90 consecutive days. The commercial anticoccidial drug toltrazuril (TTZ) was included in this trial as a standard. Twenty-four lambs were divided into four groups: NAR, lambs given a daily dose of 5mg of a commercial naringenin extract of 98% higher purity per kg body weight; GF, lambs that recived a daily dose of 5mg of ethanolic extract of grapefruit peels per kg body weight; TTZ, lambs treated with 20mg of toltrazuril/kg body weight on days 0 and 15 of the experiment; and CTRL, untreated lambs that received daily dose of 30ml of water...
December 15, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27889540/seladoeflavones-a-f-six-novel-flavonoids-from-selaginella-doederleinii
#5
ZhenXing Zou, KangPing Xu, PingSheng Xu, XiaoMin Li, Fei Cheng, Jing Li, Xia Yu, DongSheng Cao, Dan Li, Wei Zeng, GuoGang Zhang, GuiShan Tan
Six new flavonoids, seladoeflavones A-F (1-6), were isolated from the whole herbs of Selaginella doederleinii, together with one known flavonoid (7). Their structures including absolute configuration were characterized on the basis of extensive spectroscopic methods including NMR, HRMS, and electronic circular dichroism (ECD). All compounds consist of an aryl substituent at the C-3' position of naringenin or apigenin skeletons, and compounds 1 and 6 were identified as R configurations, which are uncommonly encountered in nature...
November 24, 2016: Fitoterapia
https://www.readbyqxmd.com/read/27889245/selagintriflavonoids-with-bace1-inhibitory-activity-from-the-fern-selaginella-doederleinii
#6
Zhenxing Zou, Pingsheng Xu, Guogang Zhang, Fei Cheng, Kai Chen, Jing Li, Weixing Zhu, Dongsheng Cao, Kangping Xu, Guishan Tan
Eight triflavonoids, selagintriflavonoids A-H, were isolated from whole herbs of Selaginella doederleinii. The structures of compounds selagintriflavonoids A-C consisted of three naringenin units, whereas those of selagintriflavonoids D-H consisted of apigenin and two naringenin moieties. The structures and absolute configurations of the compounds were determined based on NMR, HRESIMS, and experimental and calculated electronic circular dichroism (ECD) data. The ability of the compounds to inhibit β-secretase (BACE1) was also evaluated...
November 23, 2016: Phytochemistry
https://www.readbyqxmd.com/read/27878922/a-nodd-like-protein-activates-transcription-of-genes-involved-with-naringenin-degradation-in-a-flavonoid-dependent-manner-in-herbaspirillum-seropedicae
#7
R Wassem, A M Marin, A Daddaoua, R A Monteiro, L S Chubatsu, J L Ramos, W J Deakin, W J Broughton, F O Pedrosa, E M Souza
Herbaspirillum seropedicae is an associative, endophytic non-nodulating diazotrophic bacterium that colonises several grasses. An ORF encoding a LysR-type transcriptional regulator, very similar to NodD proteins of rhizobia, was identified in its genome. This nodD-like gene, named fdeR, is divergently transcribed from an operon encoding enzymes involved in flavonoid degradation (fde operon). Apigenin, chrysin, luteolin and naringenin strongly induce transcription of the fde operon, but not that of the fdeR, in an FdeR-dependent manner...
November 23, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27855932/industrial-processing-versus-home-processing-of-tomato-sauce-effects-on-phenolics-flavonoids-and-in-vitro-bioaccessibility-of-antioxidants
#8
Merve Tomas, Jules Beekwilder, Robert D Hall, Osman Sagdic, Dilek Boyacioglu, Esra Capanoglu
The effect of industrial and home processing, in vitro gastrointestinal digestion, individual phenolic content, and antioxidant capacity of tomato into tomato sauce were investigated. Industrial processing of tomato fruit into sauce had an overall positive effect on the total antioxidant capacity (∼1.2-fold higher) compared to tomato fruit whereas home processing of tomato fruit into sauce led to a decrease in these values. Untargeted LC-QTOF-MS analysis revealed 31 compounds in tomato that changed upon processing, of which 18 could be putatively identified...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27829416/tyrosinase-inhibition-and-antioxidant-properties-of-asphodelus-microcarpus-extracts
#9
Amalia Di Petrillo, Ana Maria González-Paramás, Benedetta Era, Rosaria Medda, Francesca Pintus, Celestino Santos-Buelga, Antonella Fais
BACKGROUND: Asphodelus microcarpus belongs to the family Liliaceae that include several medicinal plants. In the traditional medicine plants of the genus Asphodelus are used to treat skin disorders such as ectodermal parasites, psoriasis, microbial infection and for lightening freckles. In order to find novel skin depigmenting agents, the present work was carry out to evaluate antioxidant activity and tyrosinase inhibitory potential of leaves, flowers and tubers extracts of A. microcarpus...
November 9, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27815193/engineering-the-biological-conversion-of-methanol-to-specialty-chemicals-in-escherichia-coli
#10
W Brian Whitaker, J Andrew Jones, R Kyle Bennett, Jacqueline E Gonzalez, Victoria R Vernacchio, Shannon M Collins, Michael A Palmer, Samuel Schmidt, Maciek R Antoniewicz, Mattheos A Koffas, Eleftherios T Papoutsakis
Methanol is an attractive substrate for biological production of chemicals and fuels. Engineering methylotrophic Escherichia coli as a platform organism for converting methanol to metabolites is desirable. Prior efforts to engineer methylotrophic E. coli were limited by methanol dehydrogenases (Mdhs) with unfavorable enzyme kinetics. We engineered E. coli to utilize methanol using a superior NAD-dependent Mdh from Bacillus stearothermophilus and ribulose monophosphate (RuMP) pathway enzymes from B. methanolicus...
November 1, 2016: Metabolic Engineering
https://www.readbyqxmd.com/read/27810393/metabolic-engineering-of-saccharomyces-cerevisiae-for-de-novo-production-of-dihydrochalcones-with-known-antioxidant-antidiabetic-and-sweet-tasting-properties
#11
Michael Eichenberger, Beata Joanna Lehka, Christophe Folly, David Fischer, Stefan Martens, Ernesto Simón, Michael Naesby
Dihydrochalcones are plant secondary metabolites comprising molecules of significant commercial interest as antioxidants, antidiabetics, or sweeteners. To date, their heterologous biosynthesis in microorganisms has been achieved only by precursor feeding or as minor by-products in strains engineered for flavonoid production. Here, the native ScTSC13 was overexpressed in Saccharomyces cerevisiae to increase its side activity in reducing p-coumaroyl-CoA to p-dihydrocoumaroyl-CoA. De novo production of phloretin, the first committed dihydrochalcone, was achieved by co-expression of additional relevant pathway enzymes...
October 31, 2016: Metabolic Engineering
https://www.readbyqxmd.com/read/27785700/naringenin-ameliorates-hypoxia-reoxygenation-induced-endoplasmic-reticulum-stress-mediated-apoptosis-in-h9c2-myocardial-cells-involvement-in-atf6-ire1%C3%AE-and-perk-signaling-activation
#12
Jia-You Tang, Ping Jin, Qing He, Lin-He Lu, Ji-Peng Ma, Wei-Lun Gao, He-Ping Bai, Jian Yang
Naringenin, a flavanone mainly derived from grapes and citrus fruits, has been reported to exhibit cardioprotective effects. Accumulating evidence has confirmed that endoplasmic reticulum (ER) stress-mediated apoptosis participates in the process of myocardial ischemia/reperfusion injury and inhibiting ER stress is a potential therapeutic target/strategy in preventing cardiovascular diseases. Herein, the current study was designed to investigate whether naringenin protects H9c2 myocardial cells against hypoxia/reoxygenation (H/R) injury via attenuating ER stress or ER stress-mediated apoptosis...
October 26, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27765421/development-of-a-high-speed-counter-current-chromatography-system-with-cu-ii-chiral-ionic-liquid-complexes-and-hydroxypropyl-%C3%AE-cyclodextrin-as-dual-chiral-selectors-for-enantioseparation-of-naringenin
#13
Shanshan Wang, Chao Han, Sisi Wang, Lijuan Bai, Shanshan Li, Jianguang Luo, Lingyi Kong
Cu(II) complexed amino acid ionic liquid, Cu(II)-[1-butyl-3-methylimidazolium][L-Pro] (Cu(II)-[BMIm][L-Pro]), was successfully adopted as chiral ligand to improve the enantioseparation efficiency in high speed counter-current chromatography (HSCCC). For the enantioseparation of intractable naringenin (NRG) racemic mixtures, Cu(II)-[BMIm][L-Pro] coupled with hydroxypropyl-β-cyclodextrin (HP-β-CD) was successfully applied as dual chiral selectors in HSCCC. The influence of important parameters, including the concentration of the chiral selectors, the pH value, and the temperature were investigated...
October 14, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27764708/coordination-ability-and-biological-activity-of-a-naringenin-thiosemicarbazone
#14
Katarzyna Brodowska, Isabel Correia, Eugenio Garribba, Fernanda Marques, Elżbieta Klewicka, Elżbieta Łodyga-Chruscińska, João Costa Pessoa, Aliaksandr Dzeikala, Longin Chrusciński
No abstract text is available yet for this article.
September 30, 2016: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/27761073/antihepatotoxic-effect-and-metabolite-profiling-of-panicum-turgidum-extract-via-uplc-qtof-ms
#15
Mohamed A Farag, Ahlam M El Fishawy, Sayed A El-Toumy, Khadiga F Amer, Ahmed M Mansour, Hala E Taha
BACKGROUND: Panicum turgidum, desert grass, has not reported any detailed phytochemical or biological study as yet. OBJECTIVE: To establish P. turgidum secondary metabolite profile and to assess its antihepatotoxic effect. MATERIALS AND METHODS: Ultra-performance liquid chromatography (UPLC) coupled to quadrupole high-resolution time of flight mass spectrometry (qTOF-MS) was used for large-scale secondary metabolites profiling in P. turgidum extract, alongside assessing median lethal dose (LD50) and hepatoprotective effect against carbon tetrachloride (CCl4) intoxication...
July 2016: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/27722779/catabolism-of-citrus-flavanones-by-the-probiotics-bifidobacterium-longum-and-lactobacillus-rhamnosus
#16
Gema Pereira-Caro, Begoña Fernández-Quirós, Iziar A Ludwig, Inmaculada Pradas, Alan Crozier, José Manuel Moreno-Rojas
PURPOSE: Orange juice (OJ) flavanones undergo limited absorption in the upper gastrointestinal tract and reach the colon where they are transformed by the microbiota prior to absorption. This study investigated the ability of two probiotic bacteria, Bifidobacterium longum R0175 and Lactobacillus rhamnosus subsp. Rhamnosus NCTC 10302 to catabolise OJ flavanones. METHODS: The bacteria were incubated with hesperetin-7-O-rutinoside, naringenin-7-O-rutinoside, hesperetin and naringenin, and the culture medium and intracellular cell extracts were collected at intervals over a 48 h of incubation period...
October 8, 2016: European Journal of Nutrition
https://www.readbyqxmd.com/read/27720435/toxic-aromatic-compounds-from-fruits-of-narthecium-ossifragum-l
#17
Marita Vu, Lars Herfindal, Ole Johan Juvik, Anni Vedeler, Svein Haavik, Torgils Fossen
The intake of Narthecium ossifragum, commonly known as bog asphodel, has been associated with toxic effects observed in sheep for centuries. Although the plant has been studied for five centuries little is known about its chemical constituents. Six previously undescribed natural products, naringenin(3 → 6″)luteolin, naringenin(3 → 6″)chrysoeriol, liovil 4-O-β-glucopyranoside, 2,6-dimethoxy cinnamic acid, (E)-4-(3-hydroxy-2,2-dimethylchroman-6-yl)but-3-en-2-one and (E)-4-(4-(((E)-4-hydroxy-3-methylbut-2-en-1-yl)oxy)phenyl)but-3-en-2-one, have been identified from fruits of N...
October 6, 2016: Phytochemistry
https://www.readbyqxmd.com/read/27710830/6-c-e-phenylethenyl-naringenin-induces-cell-growth-inhibition-and-cytoprotective-autophagy-in-colon-cancer-cells
#18
Yueliang Zhao, Daming Fan, Beibei Ru, Ka-Wing Cheng, Shuting Hu, Jiangwen Zhang, Edmund T S Li, Mingfu Wang
6-C-(E-phenylethenyl)naringenin (6-CEPN) is a small molecule found in naringenin fortified fried beef. It has been shown to suppress colon cancer cell proliferation, but the underlying mechanisms are not fully understood. Here we demonstrate that 6-CEPN suppresses tumour cell proliferation through cell cycle arrest in G1 phase, induces necrotic cell death and autophagy in colon cancer cells. Blockade of autophagy by knockdown of the essential autophagy proteins, Atg7 or beclin-1, resulted in aggravated cell death in response to 6-CEPN treatment...
October 3, 2016: European Journal of Cancer
https://www.readbyqxmd.com/read/27668121/ripening-dependent-changes-in-antioxidants-color-attributes-and-antioxidant-activity-of-seven-tomato-solanum-lycopersicum-l-cultivars
#19
Shiva Ram Bhandari, Jun Gu Lee
To evaluate the ripening-dependent changes in phytonutrients, seven commercial cultivars (two general and five cherry) of tomatoes were cultivated under greenhouse conditions. Fruits were harvested at breaker, turning, pink, light red, and red stages of each cultivar, and antioxidant contents, color attributes, and antioxidant activities were measured. During ripening process, lycopene content increased from the breaker to red stage, while lutein displayed the reverse accumulation pattern, with higher values during the breaker stage...
2016: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/27665317/copper-ii-and-zinc-ii-complexes-with-flavanone-derivatives-identification-of-potential-cholinesterase-inhibitors-by-on-flow-assays
#20
André Lucio Franceschini Sarria, Adriana Ferreira Lopes Vilela, Bárbara Mammana Frugeri, João Batista Fernandes, Rose Maria Carlos, Maria Fátima das Graças Fernandes da Silva, Quezia Bezerra Cass, Carmen Lúcia Cardoso
Metal chelates strongly influence the nature and magnitude of pharmacological activities in flavonoids. In recent years, studies have shown that a promising class of flavanone-metal ion complexes can act as selective cholinesterase inhibitors (ChEIs), which has led our group to synthesize a new series of flavanone derivatives (hesperidin, hesperetin, naringin, and naringenin) complexed to either copper (II) or zinc (II) and to evaluate their potential use as selective ChEIs. Most of the synthesized complexes exhibited greater inhibitory activity against acetylcholinesterase (AChE) than against butyrylcholinesterase (BChE)...
September 17, 2016: Journal of Inorganic Biochemistry
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