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https://www.readbyqxmd.com/read/28550410/different-exogenous-sugars-affect-the-hormone-signal-pathway-and-sugar-metabolism-in-red-globe-vitis-vinifera-l-plantlets-grown-in-vitro-as-shown-by-transcriptomic-analysis
#1
Juan Mao, Wenfang Li, Baoqin Mi, Mohammed Mujitaba Dawuda, Alejandro Calderón-Urrea, Zonghuan Ma, Yongmei Zhang, Baihong Chen
Exogenously applied 2% fructose is the most appropriate carbon source that enhances photosynthesis and growth of grape plantlets compared with the same concentrations of sucrose and glucose. The role of the sugars was regulated by the expression of key candidate genes related to hormones, key metabolic enzymes, and sugar metabolism of grape plantlets ( Vitis vinifera L.) grown in vitro. The addition of sugars including sucrose, glucose, and fructose is known to be very helpful for the development of grape (V...
May 26, 2017: Planta
https://www.readbyqxmd.com/read/28550062/engineering-of-a-hyperthermophilic-archaeon-thermococcus-kodakarensis-that-displays-chitin-dependent-hydrogen-production
#2
Mehwish Aslam, Ayumi Horiuchi, Jan-Robert Simons, Savyasachee Jha, Masahiro Yamada, Toru Odani, Rikako Fujimoto, Yasuyuki Yamamoto, Ryoma Gunji, Tadayuki Imanaka, Tamotsu Kanai, Haruyuki Atomi
Thermococcus kodakarensis is a hyperthermophilic archaeon that harbors a complete set of genes for chitin degradation to fructose 6-phosphate. However, wild-type T. kodakarensis KOD1 does not display growth on chitin. In this study, we developed a T. kodakarensis strain that can grow on chitin via genetic and adaptive engineering. First, a chitinase overproduction strain (KC01) was constructed by replacing the chitinase gene promoter with a strong promoter from the cell-surface glycoprotein gene, resulting in increased degradation of swollen chitin and accumulation of N-, N'-diacetylchitobiose in the medium...
May 26, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28549946/potential-metabolomic-biomarkers-for-reliable-diagnosis-of-behcet-s-disease-using-gas-chromatography-with-time-of-flight-mass-spectrometry
#3
Joong Kyong Ahn, Jungyeon Kim, Jiwon Hwang, Juhwan Song, Kyoung Heon Kim, Hoon-Suk Cha
OBJECTIVES: Although many diagnostic criteria of Behcet's disease (BD) have been developed and revised by experts, diagnosing BD is still complicated and challenging. No metabolomic studies on serum have been attempted to improve the diagnosis and to identify potential biomarkers of BD. The purposes of this study were to investigate distinctive metabolic changes in serum samples of BD patients and to identify metabolic candidate biomarkers for reliable diagnosis of BD using the metabolomics platform...
May 23, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28549558/the-kv1-3-channel-blocker-vm24-enhances-muscle-glucose-transporter-4-mobilization-but-does-not-reduce-body-weight-gain-in-diet-induced-obese-male-rats
#4
Lorraine Jaimes-Hoy, Georgina B Gurrola, Miguel Cisneros, Patricia Joseph-Bravo, Lourival D Possani, Jean-Louis Charli
AIMS: Voltage-gated potassium channels 1.3 (Kv1.3) can be targeted to reduce diet-induced obesity and insulin resistance in mice. Since species-specific differences in Kv1.3 expression and pharmacology have been observed, we tested the effect of Vm24, a high-affinity specific blocker of Kv1.3 channels from Vaejovis mexicanus smithi, on body weight (BW), glucose tolerance and insulin resistance in diet-induced obese rats. MATERIALS AND METHODS: Young adult male Wistar rats were switched to a high-fat/high-fructose (HFF) diet...
May 23, 2017: Life Sciences
https://www.readbyqxmd.com/read/28548573/inulin-type-fructan-degradation-capacity-of-clostridium-cluster-iv-and-xiva-butyrate-producing-colon-bacteria-and-their-associated-metabolic-outcomes
#5
F Moens, L De Vuyst
Four selected butyrate-producing colon bacterial strains belonging to Clostridium cluster IV (Butyricicoccus pullicaecorum DSM 23266(T) and Faecalibacterium prausnitzii DSM 17677(T)) and XIVa (Eubacterium hallii DSM 17630 and Eubacterium rectale CIP 105953(T)) were studied as to their capacity to degrade inulin-type fructans and concomitant metabolite production. Cultivation of these strains was performed in bottles and fermentors containing a modified medium for colon bacteria, including acetate, supplemented with either fructose, oligofructose, or inulin as the sole energy source...
May 30, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28548281/adverse-effects-of-fructose-on-cardiometabolic-risk-factors-and-hepatic-lipid-metabolism-in-subjects-with-abdominal-obesity
#6
Marja-Riitta Taskinen, Sanni Söderlund, Leonie H Bogl, Antti Hakkarainen, Niina Matikainen, Kirsi H Pietiläinen, Sari Räsänen, Nina Lundbom, Elias Björnson, Björn Eliasson, Rosellina M Mancina, Stefano Romeo, Natalie Alméras, Giuseppe Della Pepa, Claudia Vetrani, Anna Prinster, Giovanni Annuzzi, Angela Rivellese, Jean-Pierre Després, Jan Borén
BACKGROUND: Overconsumption of dietary sugars, fructose in particular, is linked to cardiovascular risk factors such as type 2 diabetes, obesity, dyslipidemia, and non-alcoholic fatty liver disease. However, clinical studies have to date not clarified whether these adverse cardiometabolic effects are induced directly by dietary sugars, or if they are secondary to weight gain. OBJECTIVES: To assess the effects of fructose (75 g/day), served with their habitual diet over 12 weeks, on liver fat content and other cardiometabolic risk factors in a large cohort (n=71) of abdominally obese men...
May 26, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28547120/enzymatic-characterization-of-fructose-1-6-bisphosphatase-ii-from-francisella-tularensis-an-essential-enzyme-for-pathogenesis
#7
Hiten J Gutka, Nina M Wolf, Jasper Marc G Bondoc, Farahnaz Movahedzadeh
The glpX gene from Francisella tularensis encodes for the class II fructose 1,6-bisphosphatase (FBPaseII) enzyme. The glpX gene has been verified to be essential in F. tularensis, and the inactivation of this gene leads to impaired bacterial growth on gluconeogenic substrates. In the present work, we have complemented a ∆glpX mutant of Escherichia coli with the glpX gene of F. tularensis (FTF1631c). Our complementation work independently verifies that the glpX gene (FTF1631c) in F. tularensis is indeed an FBPase and supports the growth of the ΔglpX E...
May 25, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28545955/the-up-regulation-of-phosphofructokinase1-pfk1-protein-during-chemically-induced-hypoxia-is-mediated-by-the-hypoxia-responsive-internal-ribosome-entry-site-ires-element-present-in-its-5-untranslated-region
#8
Rehana Ismail, Mahboob Ul Hussain
PURPOSE: Astrocytes cope-up the hypoxia conditions by up regulating the activity of the enzymes catalyzing the irreversible steps of the glycolytic pathway. The phosphofructokinase1 (PFK1), which converts fructose-6-phosphate to fructose-1, 6-bisphosphate, is the major regulatory enzyme of the glycolytic pathway. For this purpose, we investigated the expression regulation of the PFK1 during chemically induced hypoxia. PRINCIPAL RESULT: After 48 hours of the chemically induced hypoxia induction of the C6 glioma cells, the PFK1 protein depicted strong up regulation, with no appreciable change in its mRNA levels...
May 22, 2017: Biochimie
https://www.readbyqxmd.com/read/28545487/inhaled-ambient-level-traffic-derived-particulates-decrease-cardiac-vagal-influence-and-baroreflexes-and-increase-arrhythmia-in-a-rat-model-of-metabolic-syndrome
#9
Alex P Carll, Samir M Crespo, Mauricio S Filho, Douglas H Zati, Brent A Coull, Edgar A Diaz, Rodrigo D Raimundo, Thomas N G Jaeger, Ana Laura Ricci-Vitor, Vasileios Papapostolou, Joy E Lawrence, David M Garner, Brigham S Perry, Jack R Harkema, John J Godleski
BACKGROUND: Epidemiological studies have linked exposures to ambient fine particulate matter (PM2.5) and traffic with autonomic nervous system imbalance (ANS) and cardiac pathophysiology, especially in individuals with preexisting disease. It is unclear whether metabolic syndrome (MetS) increases susceptibility to the effects of PM2.5. We hypothesized that exposure to traffic-derived primary and secondary organic aerosols (P + SOA) at ambient levels would cause autonomic and cardiovascular dysfunction in rats exhibiting features of MetS...
May 25, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28545346/gamma-linolenic-acid-ameliorated-glycation-induced-memory-impairment-in-rats
#10
Shahab Ali Khan, Ali Haider, Wajahat Mahmood, Talat Roome, Ghulam Abbas
CONTEXT: γ-Linolenic acid (GLA) is an important constituent of anti-ageing supplements. OBJECTIVE: The current study investigates the anti-ageing effect of GLA in Sprague-Dawley rats. MATERIALS AND METHODS: GLA (0.1, 0.2, 0.4, 2, 10, 20 and 24 μM) was initially evaluated for its effect on the formation of advanced glycation end products (AGEs) in vitro. For in vivo assessment (1, 5 or 15 mg/kg), the rat model of accelerated ageing was developed using d-fructose (1000 mg/kg (i...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28542187/elucidation-of-new-condition-dependent-roles-for-fructose-1-6-bisphosphatase-linked-to-cofactor-balances
#11
Du Toit W P Schabort, Stephanus G Kilian, James C du Preez
The cofactor balances in metabolism is of paramount importance in the design of a metabolic engineering strategy and understanding the regulation of metabolism in general. ATP, NAD+ and NADP+ balances are central players linking the various fluxes in central metabolism as well as biomass formation. NADP+ is especially important in the metabolic engineering of yeasts for xylose fermentation, since NADPH is required by most yeasts in the initial step of xylose utilisation, including the fast-growing Kluyveromyces marxianus...
2017: PloS One
https://www.readbyqxmd.com/read/28539736/antiprotozoal-activities-of-tiliroside-and-other-compounds-from-sphaeralcea-angustifolia-cav-g-don
#12
Fernando Calzada, Jose Correa Basurto, Elizabeth Barbosa, Claudia Velázquez, Normand García Hernández, R M Ordoñez Razo, David Mendez Luna, Lilian Yepez Mulia
BACKGROUND: Sphaeralcea angustifolia (Malvaceae) is extensively used in Mexican traditional medicine for the treatment of gastrointestinal disorders such as diarrhea and dysentery. OBJECTIVE: The current study was to validate the traditional use of S. angustifolia for the treatment of diarrhea and dysentery on biological grounds using in vitro antiprotozoal activity and computational experiments. MATERIALS AND METHODS: The ethanol extract, subsequent fractions, flavonoids, phenolic acids, and a sterol were evaluated on Entamoeba histolytica and Giardia lamblia trophozoites...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28539355/xanthine-oxidase-inhibition-protects-against-western-diet-induced-aortic-stiffness-and-impaired-vasorelaxation-in-female-mice
#13
Guido Lastra, Camila Manrique, Guanghong Jia, Annayya R Aroor, Melvin R Hayden, Brady J Barron, Brett Niles, Jaume Padilla, James R Sowers
Consumption of a high-fat high-fructose diet (western diet, [WD]) promotes vascular stiffness, a critical factor in the development of cardiovascular disease (CVD). Obese and diabetic women exhibit greater arterial stiffness than men, which contributes to the increased incidence of CVD in women. Further, high-fructose diets result in elevated plasma concentrations of uric acid via xanthine oxidase (XO) activation, and are also associated with vascular stiffness. In turn, uric acid levels lead to vascular stiffness and CVD in women...
May 24, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28537709/titanium-oxo-cluster-with-six-peripheral-ferrocene-units-and-its-photocurrent-response-properties-for-saccharides
#14
Jin-Le Hou, Wen Luo, Yao Guo, Ping Zhang, Shen Yang, Qin-Yu Zhu, Jie Dai
A unique titanium oxo cluster with a ferrocene ligand was synthesized and characterized by single crystal X-ray analysis. Six ferrocene carboxylates coordinate to a D3d Ti6O6 core to be a redox active cluster 1, [Ti6O6(O(i)Pr)6(O2CFc)6]. An analogue 2, [Ti6O6(O(i)Pr)6(O2C(i)Bu)6], where the redox active ferrocene group is replaced by isobutyrate, is also reported as a contrast. The six ferrocene moieties in 1 are structurally identical to give a main redox wave at E1/2 = 0.62 V in dichloromethane investigated by cyclic voltammetry...
May 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28537388/micro-electric-current-treatment-enhanced-biodegradation-of-pumpkin-lignocelluloses-by-trichoderma-reesei-rut-c30
#15
Rui Yang, Yuqian Liu, Zhongkai Zhou, Jiping Sheng, Demei Meng
A home-made micro-current reactor was used to treat the fermentation of Trichoderma reesei. Results indicated that the yield of saccharides for Trichoderma reesei RUT-C30 cultivated in pumpkin lignocelluloses broth reach to 38.86% (w/w), when a micro-current treatment (20 mA, at 48th hour for 60 min) was carried out, which is significantly higher than the control group (p<0.05). Additionally, activities of endoglucanase, cellobiohydrolase, xylanase, and pectinase were significantly increased in days 3-7...
May 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28536557/biocontrol-of-sugarcane-smut-disease-by-interference-of-fungal-sexual-mating-and-hyphal-growth-using-a-bacterial-isolate
#16
Shiyin Liu, Nuoqiao Lin, Yumei Chen, Zhibin Liang, Lisheng Liao, Mingfa Lv, Yufan Chen, Yingxin Tang, Fei He, Shaohua Chen, Jianuan Zhou, Lianhui Zhang
Sugarcane smut is a fungal disease caused by Sporisorium scitamineum, which can cause severe economic losses in sugarcane industry. The infection depends on the mating of bipolar sporida to form a dikaryon and develops into hyphae to penetrate the meristematic tissue of sugarcane. In this study, we set to isolate bacterial strains capable of blocking the fungal mating and evaluate their potential in control of sugarcane smut disease. A bacterial isolate ST4 from rhizosphere displayed potent inhibitory activity against the mating of S...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28536126/relation-of-total-sugars-fructose-and-sucrose-with-incident-type-2-diabetes-a-systematic-review-and-meta-analysis-of-prospective-cohort-studies
#17
Christine S Tsilas, Russell J de Souza, Sonia Blanco Mejia, Arash Mirrahimi, Adrian I Cozma, Viranda H Jayalath, Vanessa Ha, Reem Tawfik, Marco Di Buono, Alexandra L Jenkins, Lawrence A Leiter, Thomas M S Wolever, Joseph Beyene, Tauseef Khan, Cyril W C Kendall, David J A Jenkins, John L Sievenpiper
BACKGROUND: Sugar-sweetened beverages are associated with type 2 diabetes. To assess whether this association holds for the fructose-containing sugars they contain, we conducted a systematic review and meta-analysis of prospective cohort studies. METHODS: We searched MEDLINE, Embase, CINAHL and the Cochrane Library (through June 2016). We included prospective cohort studies that assessed the relation of fructose-containing sugars with incident type 2 diabetes. Two independent reviewers extracted relevant data and assessed risk of bias...
May 23, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28536120/hepatocyte-specific-sirtuin-6-deletion-predisposes-to-nonalcoholic-steatohepatitis-by-up-regulation-of-bach1-an-nrf2-repressor
#18
Sun-O Ka, In Hyuk Bang, Eun Ju Bae, Byung-Hyun Park
Sirtuin (Sirt)6 has been implicated in negative regulation of inflammation and lipid metabolism, although its function in the progression from simple steatosis to nonalcoholic steatohepatitis (NASH) remains to be defined. To explore the role of hepatocyte Sirt6 in NASH development, we generated hepatocyte-specific Sirt6 knockout (KO) mice that were fed a high-fat and high-fructose (HFHF) diet for 16 wk. HFHF-fed KO mice had increased hepatic steatosis and inflammation and aggravated glucose intolerance and insulin resistance compared with wild-type mice...
May 23, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28534831/rapidly-simultaneous-determination-of-six-effective-components-in-cistanche-tubulosa-by-near-infrared-spectroscopy
#19
Xinhong Wang, Xiaoguang Wang, Yuhai Guo
Quantitative determination of multiple effective components in a given plant usually requires a very large amount of authentic natural products. In this study, we proposed a rapid and non-destructive method for the simultaneous determination of echinacoside, verbascoside, mannitol, sucrose, glucose and fructose in Cistanche tubulosa by near infrared spectroscopy (NIRS). Near infrared diffuse reflectance spectroscopy (DRS) and high performance liquid chromatography (HPLC) were conducted on 116 batches of C. tubulosa samples...
May 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28533178/mucin-and-carbohydrate-stimulated-adhesion-and-subproteome-changes-of-the-probiotic-bacterium-lactobacillus-acidophilus-ncfm
#20
Hasan Ufuk Celebioglu, Sita Vaag Olesen, Kennie Prehn, Sampo J Lahtinen, Susanne Brix, Maher Abou Hachem, Birte Svensson
Adhesion to intestinal mucosa is a crucial property for probiotic bacteria. Adhesion is thought to increase host-bacterial interactions, thus potentially enabling health benefits to the host. Molecular events connected with adhesion and surface proteome changes were investigated for the probiotic Lactobacillus acidophilus NCFM cultured with established or emerging prebiotic carbohydrates as carbon source and in the presence of mucin, the glycoprotein of the epithelial mucus layer. Variation in adhesion to HT29-cells and mucin was associated with carbon source and mucin-induced subproteome abundancy differences...
May 19, 2017: Journal of Proteomics
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