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Naringin

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https://www.readbyqxmd.com/read/28431473/structures-and-bioactivities-of-seven-flavonoids-from-osmanthus-fragrans-jinqiu-essential-oil-extraction-residues
#1
Jiang-Lian Zhou, Xian-Ying Fang, Jing-Qiu Wang, Lin-Guo Zhao, Yi Li, Feng Tang, Yong-De Yue
Osmanthus fragrans are well-known for their fragrance, but it is wasteful if to discard O. fragrans flower after extracting their essential oils. In this paper, we found that O. fragrans flower residues were rich in flavonoids. Six flavonoids and one phenylethanoid glycoside were isolated from the ethanol extract of O. fragrans flower residues, identified as quercetin (1), rutin (2), verbascoside (3), genistin (4), kaempferol (5), isorhamnetin (6) and naringin (7). In bioactivity study, kaempferol (IC50 = 1...
April 21, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28426254/naringin-protects-viscera-from-ischemia-reperfusion-injury-by-regulating-the-nitric-oxide-level-in-a-rat-model
#2
A Cerkezkayabekir, F Sanal, E Bakar, E Ulucam, M Inan
We investigated the effects of naringin on small intestine, liver, kidney and lung recovery after ischemia/reperfusion (I/R) injury of the gut. Rats were divided randomly into four groups of eight. Group A was the sham control; group B was ischemic for 2 h; group C was ischemic for 2 h and re-perfused for 2 h (I/R); group D was treated with 50 mg/kg naringin after ischemia, then re-perfused for 2 h. Endothelial nitric oxide synthase (eNOS) and inducible nitric oxide synthase (iNOS) expressions were detected by immunolabeling...
April 20, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28422390/naringin-abates-adverse-effects-of-cadmium-mediated-hepatotoxicity-an-experimental-study-using-hepg2-cells
#3
Visesh Kumar Rathi, Shubhankar Das, Archana Parampalli Raghavendra, Bola Sadashiva Satish Rao
This study investigated the protective potential of Naringin (NIN) against cadmium chloride (CdCl2 ) mediated hepatotoxicity using human hepatocellular carcinoma (HepG2) cells. An optimal concentration of NIN (5 μM) was potent enough to confer cytoprotection against CdCl2 (50 μM) as was observed by MTT assay. Preconditioning with NIN maintained redox homeostasis, mitochondrial membrane potential, and reduced apoptosis as marked by decrease in the percentage sub-G0 /G1 and Annexin V-FITC/propidium iodide positive cells (apoptotic)...
April 19, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28395989/naringin-ameliorates-diabetic-nephropathy-by-inhibiting-nadph-oxidase-4
#4
Junwei Zhang, Suxia Yang, Huicong Li, Fang Chen, Jun Shi
Naringin, a naturally flavanone glycoside, has been previously demonstrated to alleviate diabetic kidney disease by inhibiting oxidative stress and inflammatory reaction. However, the underlying mechanism of naringin in diabetic nephropathy (DN) has not been fully elucidated. Here, the beneficial effect of naringin on DN in streptozotocin (STZ)-induced DN rats and high glucose (HG)-induced podocytes and its underlying mechanism were elaborated. The result revealed that naringin alleviated STZ-induced renal dysfunction and injury in DN rats, relieved STZ-induced oxidative stress in vivo and inhibited HG-induced apoptosis and reactive oxygen species level i20n vitro...
June 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28330084/covalent-immobilization-of-microbial-naringinase-using-novel-thermally-stable-biopolymer-for-hydrolysis-of-naringin
#5
Ghada E A Awad, Abeer A Abd El Aty, Abeer N Shehata, Mohamed E Hassan, Magdy M Elnashar
Naringinase induced from the fermented broth of marine-derived fungus Aspergillus niger was immobilized into grafted gel beads, to obtain biocatalytically active beads. The support for enzyme immobilization was characterized by ART-FTIR and TGA techniques. TGA revealed a significant improvement in the grafted gel's thermal stability from 200 to 300 °C. Optimization of the enzyme loading capacity increased gradually by 28-fold from 32 U/g gel to 899 U/g gel beads, retaining 99 % of the enzyme immobilization efficiency and 88 % of the immobilization yield...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28322845/metformin-like-antidiabetic-cardio-protective-and-non-glycemic-effects-of-naringenin-molecular-and-pharmacological-insights
#6
REVIEW
Ntsoaki Annah Nyane, Thabiso Bethwel Tlaila, Tanki Gabriel Malefane, Dudu Edith Ndwandwe, Peter Mark Oroma Owira
Metformin is a widely used drug for the treatment of type 2 diabetes (T2D). Its blood glucose-lowering effects are initially due to inhibition of hepatic glucose production and increased peripheral glucose utilization. Metformin has also been shown to have several beneficial effects on cardiovascular risk factors and it is the only oral antihyperglycaemic agent thus far associated with decreased macrovascular complications in patients with diabetes. Adenosine Monophosphate Activated-Protein Kinase (AMPK) is a major cellular regulator of lipid and glucose metabolism...
May 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28293083/pharmacokinetics-and-pharmacodynamics-of-da-cheng-qi-decoction-in-the-liver-of-rats-with-severe-acute-pancreatitis
#7
Yu-Mei Zhang, Hong-Yu Ren, Xian-Lin Zhao, Juan Li, Jun-Yi Li, Fu-Sheng Wu, Hang Su, Wen-Fu Tang
AIM: To explore the pharmacokinetics and pharmacodynamics of Da-Cheng-Qi decoction (DCQD) in the liver of rats with severe acute pancreatitis (SAP) based on an herbal recipe tissue pharmacology hypothesis. METHODS: Healthy male Sprague-Dawley rats were randomly divided into a sham operation group (SOG); a model group (MG); and low-, median- and high-dose treatment groups (LDG, MDG, and HDG, respectively). Different dosages (6, 12 and 24 g/kg for the LDG, MDG, and HDG, respectively) of DCQD were administered to the rats with SAP...
February 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28282882/maternal%C3%A2-consumption%C3%A2-of%C3%A2-hesperidin%C3%A2-and%C3%A2-naringin%C3%A2-flavanones%C3%A2-exerts%C3%A2-transient%C3%A2-effects%C3%A2-to%C3%A2-tibia%C3%A2-bone%C3%A2-structure%C3%A2-in%C3%A2-female%C3%A2-cd-1%C3%A2-offspring
#8
Sandra M Sacco, Caitlin Saint, Paul J LeBlanc, Wendy E Ward
Hesperidin (HSP) and naringin (NAR), flavanones rich in citrus fruits, support skeletal integrity in adult and aging rodent models. This study determined whether maternal consumption of HSP and NAR favorably programs bone development, resulting in higher bone mineral density (BMD) and greater structure and biomechanical strength (i.e., peak load) in female offspring. Female CD-1 mice were fed a control diet or a HSP + NAR diet five weeks before pregnancy and throughout pregnancy and lactation. At weaning, female offspring were fed a control diet until six months of age...
March 8, 2017: Nutrients
https://www.readbyqxmd.com/read/28270768/extracts-of-immature-orange-aurantii-fructus-immaturus-and-citrus-unshiu-peel-citri-unshiu-pericarpium-induce-p-glycoprotein-and-cytochrome-p450-3a4-expression-via-upregulation-of-pregnane-x-receptor
#9
Naoto Okada, Aki Murakami, Shiori Urushizaki, Misa Matsuda, Kazuyoshi Kawazoe, Keisuke Ishizawa
P-glycoprotein (P-gp) and cytochrome P450 3A4 (CYP3A4) are expressed in the intestine and are associated with drug absorption and metabolism. Pregnane X receptor (PXR) is the key molecule that regulates the expression of P-gp and CYP3A4. Given that PXR activity is regulated by a variety of compounds, it is possible that unknown PXR activators exist among known medicines. Kampo is a Japanese traditional medicine composed of various natural compounds. In particular, immature orange [Aurantii fructus immaturus (IO)] and citrus unshiu peel [Citri unshiu pericarpium (CP)] are common ingredients of kampo...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28263808/structural-characterization-and-bioavailability-of-ternary-nanoparticles-consisting-of-amylose-%C3%AE-linoleic-acid-and-%C3%AE-lactoglobulin-complexed-with-naringin
#10
Tao Feng, Ke Wang, Fangfang Liu, Ran Ye, Xiao Zhu, Haining Zhuang, Zhimin Xu
Naringin is a bioflavonoid that is rich in citrus plants and possesses enormous health benefits. However, the use of naringin as a nutraceutical is significantly limited by its low bioavailability. In this study, a novel water-soluble ternary nanoparticle material consisting of amylose, α-linoleic acid and β-lactoglobulin was developed to encapsulate naringin to improve its bioavailability. The physicochemical characteristics of the ternary nanoparticle-naringin inclusion complex were analysed by ultraviolet-visible spectroscopy (UV), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), high-resolution transmission electron microscopy (TEM), X-ray diffractometry (XRD) and particle size distribution...
June 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28260042/protective-effect-of-naringin-against-the-lps-induced-apoptosis-of-pc12-cells-implications-for-the-treatment-of-neurodegenerative-disorders
#11
Hui Wang, You Song Xu, Miao Lin Wang, Chao Cheng, Rui Bian, Hao Yuan, Yi Wang, Ting Guo, Lin Lin Zhu, Hang Zhou
Several studies have demonstrated that increased apoptosis plays an essential role in neurodegenerative disorders. It has been demonstrated that lipopolysaccharide (LPS) induces apoptosis largely through the production of intracellular reactive oxygen species (ROS) and inflammatory mediators. In this study, we investigated the potential protective mechanisms of naringin (Nar), a pummelo peel extract, on LPS-induced PC12 cell apoptosis. Nar pre-conditioning prior to stimulation with LPS for 18 h was a prerequisite for evaluating PC12 cell viability and the protective mechanisms of Nar...
April 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28202192/ordered-mesoporous-silica-functionalized-with-%C3%AE-cyclodextrin-derivative-for-stereoisomer-separation-of-flavanones-and-flavanone-glycosides-by-nano-liquid-chromatography-and-capillary-electrochromatography
#12
Mariana Silva, Damián Pérez-Quintanilla, Sonia Morante-Zarcero, Isabel Sierra, María Luisa Marina, Zeineb Aturki, Salvatore Fanali
In this paper a chiral stationary phase (CSP) was prepared by the immobilization of a β-CD derivative (3,5-dimethylphenylcarbamoylated β-CD) onto the surface of amino-functionalized spherical ordered mesoporous silica (denoted as SM) via a urea linkage using the Staudinger reaction. The CSP was packed into fused silica capillaries 100μm I.D. and evaluated by means of nano-liquid chromatography (nano-LC) and capillary electrochromatography (CEC) using model compounds for the enantio- and the diastereomeric separation...
February 9, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28192136/inhibition-of-glycation-and-aldose-reductase-activity-using-dietary-flavonoids-a-lens-organ-culture-studies
#13
Kapil K Patil, Rajesh N Gacche
On the eve of increasing incidence of diabetes mellitus and related complications, the search for novel, safe and alternatives therapeutic approaches are evolving. In the present investigation, a panel of ten dietary flavonoids such as 4'-methoxyflavanone, formononetin, hesperetin, hesperidin, naringenin, naringin, rutin, diadzin, silibinin and silymarin was evaluated as possible inhibitors of sugar induced cataractogenesis using bovine lens organ culture studies. The effect of selected flavonoids was observed on glycation induced lens opacity, AGE fluorescence, carbonyl group formation (a biomarker of glycation), protein aggregation and aldose reductase (AR) inhibition...
May 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28174089/controllable-immobilization-of-naringinase-on-electrospun-cellulose-acetate-nanofibers-and-their-application-to-juice-debittering
#14
Weijuan Huang, Yingfei Zhan, Xiaowen Shi, Jiajia Chen, Hongbing Deng, Yumin Du
Electrospinning is a facile method to fabricate nanofibers, in terms of their high specific surface area and porous structure. Electrospun nanofibrous mats are excellent candidates for immobilization of enzymes. In this study, a simple route based on electrospinning and layer-by-layer (LBL) self-assembly processes has been developed to prepared naringinase/alginate multilayer coated electrospun cellulose acetate nanofibers. The content of immobilized naringinase could be tuned by adjusting the number of multilayers...
May 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28165379/in-vitro-lipophilic-antioxidant-capacity-antidiabetic-and-antibacterial-activity-of-citrus-fruits-extracts-from-aceh-indonesia
#15
Ernawita, Ruri Agung Wahyuono, Jana Hesse, Uta-Christina Hipler, Peter Elsner, Volker Böhm
This study reports in vitro lipophilic antioxidant, inhibition of α-amylase and antibacterial activities of extracts of peel and pulp of citrus samples from Aceh, Indonesia. HPLC (high-performance liquid chromatography), phytochemical, and FTIR (fourier transform infrared) analysis detected carotenoids, flavonoids, phenolic acids and terpenoids, contributing to the biological potencies. Most peel and pulp extracts contained lutein and lower concentrations of zeaxanthin, α-carotene, β-carotene and β-cryptoxanthin...
February 3, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28159252/a-process-to-preserve-valuable-compounds-and-acquire-essential-oils-from-pomelo-flavedo-using-a-microwave-irradiation-treatment
#16
Zaizhi Liu, Yuangang Zu, Lei Yang
A microwave pretreatment method was developed to preserve pectin, naringin, and limonin contents in pomelo flavedo to allow for longer storage times and subsequent extraction of pomelo essential oil. In terms of the essential oil, microwave pretreatment performed better than hydrodistillation with respect to extraction efficiency (1.88±0.06% in 24min versus 1.91±0.08% in 240min), oxygenation fraction (48.59±1.32% versus 29.63±1.02%), energy consumption (0.15kWh versus 1.54kWh), and environmental impact (123...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28119357/stimulus-dependent-effects-of-temperature-on-bitter-taste-in-humans
#17
Barry G Green, Kendra Andrew
This study investigated the effects of temperature on bitter taste in humans. The experiments were conducted within the context of current understanding of the neurobiology of bitter taste and recent evidence of stimulus-dependent effects of temperature on sweet taste. In the first experiment, the bitterness of caffeine and quinine sampled with the tongue tip was assessed at 4 different temperatures (10°, 21°, 30°, and 37 °C) following pre-exposure to the same solution or to water for 0, 3, or 10 s. The results showed that initial bitterness (0-s pre-exposure) followed an inverted U-shaped function of temperature for both stimuli, but the differences across temperature were statistically significant only for quinine...
February 2017: Chemical Senses
https://www.readbyqxmd.com/read/28110962/%C3%AE-l-rhamnosidase-selective-for-rutin-to-isoquercitrin-transformation-from-penicillium-griseoroseum-mtcc-9224
#18
Sarita Yadav, Sudha Yadava, Kapil D S Yadav
An α-l-rhamnosidase secreting fungal strain has been isolated from the decaying goose berry (Emblica officinalis) fruit peel. The fungal strain has been identified as Penicillium greoroseum MTCC-9224. The α-l-rhamnosidase of this fungal strain has been purified to homogeneity using a simple procedure involving concentration by ultra filtration and an anion exchange chromatography on DEAE-cellulose. The purified enzyme gave a single protein band corresponding to molecular mass of 97kDa in SDS-PAGE analysis...
January 5, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28110667/identification-of-a-novel-penicillium-chrysogenum-rhamnogalacturonan-rhamnohydrolase-and-the-first-report-of-a-rhamnogalacturonan-rhamnohydrolase-gene
#19
Shotaro Matsumoto, Hiroyuki Yamada, Yuika Kunishige, Shigeo Takenaka, Masami Nakazawa, Mitsuhiro Ueda, Tatsuji Sakamoto
Rhamnogalacturonan (RG) I is one of the main components of pectins in the plant cell wall. We recently reported two RG I-degrading enzymes, endo-RG and exo-RG lyases, secreted by Penicillium chrysogenum 31B. Here, our aims were to purify a RG rhamnohydrolase (PcRGRH78A) from the culture filtrate of this strain and to characterize this enzyme. On the basis of the internal amino acid sequences, the encoding gene, Pcrgrh78A, was cloned and overexpressed in Aspergillus oryzae. The deduced amino acid sequence of PcRGRH78A is highly similar to an uncharacterized protein belonging to glycoside hydrolase family 78...
March 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28101344/evaluation-of-pharmacological-relaxation-effect-of-the-natural-product-naringin-on-in-vitro-cultured-airway-smooth-muscle-cells-and-in-vivo-ovalbumin-induced-asthma-balb-c-mice
#20
Yue Wang, Yun Lu, Mingzhi Luo, Xiaohao Shi, Yan Pan, Huilong Zeng, Linhong Deng
Asthma has become a common chronic respiratory disease worldwide and its prevalence is predicted to continue increasing in the next decade, particularly in developing countries. A key component in asthma therapy is to alleviate the excessive bronchial airway narrowing ultimately due to airway smooth muscle contraction, which is often facilitated by a smooth muscle relaxant, such as the β2-adrenergic agonists. Recently, bitter taste receptor (TAS2R) agonists, including saccharin and chloroquine, have been found to potently relax the airway smooth muscle cells (ASMCs) via intracellular Ca(2+) signaling...
December 2016: Biomedical Reports
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