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https://www.readbyqxmd.com/read/28434191/the-effect-of-parotid-gland-sparing-imrt-on-salivary-composition-flow-rate-and-xerostomia-measures
#1
Thomas M Richards, Tara Hurley, Lorna Grove, Kevin J Harrington, Guy H Carpenter, Gordon B Proctor, Christopher M Nutting
OBJECTIVES: To describe parotid gland (PG) saliva organic and inorganic composition and flow rate changes, after curative intensity-modulated radiotherapy (IMRT) for head and neck cancer (HNC) and analyse the relationship between PG saliva analytes and xerostomia measures. METHODS AND MATERIALS: Twenty-six patients recruited to five prospective phase 2 or 3 trials which assessed toxicity and efficacy of IMRT by HNC subsite, provided longitudinal PG salivas. Salivary flow rate, subjective and objective xerostomia measures were prospectively collected and salivas tested for inorganic and organic analytes...
April 23, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28434167/analysis-of-s1p-receptor-expression-by-uterine-immune-cells-using-standardized-multi-parametric-flow-cytometry
#2
Jianhong Zhang, Annie Bang, Stephen J Lye
Flow cytometry is a powerful tool for phenotypic and functional analyses of single immune cells. The increasing capability of flow cytometry technology has driven a more detailed understanding of immune cell subsets and functions in complex cellular systems such as the developing human decidua/placenta. We propose a standardized procedure for the isolation and analysis of human decidual natural killer (dNK) cells and this method can be extended to investigation of other uterine lymphocytes. Here this platform is used to examine the expression of sphingosine-1-phosphate (S1P) receptor and functional growth factors by dNK cells...
April 23, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28433923/uhplc-q-orbitrap-hrms-based-global-metabolomics-reveal-metabolome-modifications-in-plasma-of-young-women-after-cranberry-juice-consumption
#3
Haiyan Liu, Timothy J Garrett, Zhihua Su, Christina Khoo, Liwei Gu
Plasma metabolome in young women following cranberry juice consumption were investigated using a global UHPLC-Q-Orbitrap-HRMS approach. Seventeen female college students, between 21 and 29 years old, were given either cranberry juice or apple juice for three days using a cross-over design. Plasma samples were collected before and after juice consumption. Plasma metabolomes were analyzed using UHPLC-Q-Orbitrap-HRMS followed by orthogonal partial least squares-discriminant analyses (OPLS-DA). S-plot was used to identify discriminant metabolites...
April 7, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28433709/pulmonary-pathobiology-induced-by-zinc-oxide-nanoparticles-in-mice-a-24-hour-and-28-day-follow-up-study
#4
Hsiao-Chi Chuang, Kai-Jen Chuang, Jen-Kun Chen, His-En Hua, Yen-Ling Shen, Wei-Neng Liao, Chii-Hong Lee, Chih-Hong Pan, Kuan-Yuan Chen, Kang-Yun Lee, Ta-Chih Hsiao, Tsun-Jen Cheng
Inhaled zinc oxide nanoparticles (ZnONPs) have high deposition rates in the alveolar region of the lungs; however, the adverse health effects of ZnONPs on the respiratory system are unclear. Herein, pathobiological responses of the respiratory system of mice that received intratracheal administration of ZnONPs were investigated by a combination of molecular and imaging (SPECT and CT) approaches. Also, normal BEAS-2B and adenocarcinoma A549 cells were used to confirm the results in mice. First, female BALB/c mice were administrated a series of doses of 20-nm ZnONPs and were compared to the phosphate-buffered saline control for 24-h and 28-day follow-up observations...
April 19, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28433660/redox-regulation-of-gasotransmission-in-the-vascular-system-a-focus-on-angiogenesis
#5
REVIEW
Rajesh K Mistry, Alison C Brewer
Reactive oxygen species have emerged as key participants in a broad range of physiological and pathophysiological processes, not least within the vascular system. Diverse cellular functions which have been attributed to some of these pro-oxidants within the vasculature include the regulation of blood pressure, neovascularisation and vascular inflammation. We here highlight the emerging roles of the enzymatically-generated reaction oxygen species, O2(-) and H2O2, in the regulation of the functions of the gaseous signalling molecules: nitric oxide (NO), carbon monoxide (CO), and hydrogen sulphide (H2S)...
April 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28433582/effects-of-twenty-standard-amino-acids-on-biochemical-constituents-docosahexaenoic-acid-production-and-metabolic-activity-changes-of-crypthecodinium-cohnii
#6
Waseem Safdar, Xinyi Zan, Muhammad Shamoon, Hafiz Rizwan Sharif, Omar Mukama, Xin Tang, Yuanda Song
The influence of 20 standard amino acids was investigated on growth, lipid accumulation, docosahexaenoic acid (DHA) production and cell biochemical composition of Crypthecodinium cohnii. C. cohnii efficiently utilize organic nitrogen (predominantly threonine and to a lesser extent tyrosine and serine) as compared to inorganic nitrogen (NH4)2SO4. However, No significant effect was observed on major biochemical composition of C. cohnii (lipids, carbohydrates and proteins) under N limitation or supplementation with different N-sources...
April 9, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28433566/%C3%AE-aminoisobutyric-acid-ameliorates-the-renal-fibrosis-in-mouse-obstructed-kidneys-via-inhibition-of-renal-fibroblast-activation-and-fibrosis
#7
Huijuan Wang, Jun Qian, Xiufen Zhao, Changing Xing, Bin Sun
Renal fibrosis is a hallmark feature of chronic kidney disease, which is reflected by proliferation and migration of interstitial fibroblasts and extracellular matrix (ECM) accumulation. β-Aminoisobutyric acid (BAIBA) is recently demonstrated to exert a protective role from metabolic diseases. However, whether and how BAIBA on fibroblast activation and renal fibrosis response to angiotensin II (Ang II) remains largely obscure. Herein, we showed that BAIBA significantly depressed the proliferation and migration of NRK-49F cells in vitro...
February 8, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28433189/synergic-regulation-of-redox-potential-and-oxygen-uptake-to-enhance-production-of-coenzyme-q10-in-rhodobacter-sphaeroides
#8
Yongqiang Zhu, Lidan Ye, Zhaofeng Chen, Weijiang Hu, Yanghui Shi, Jianbo Chen, Chenfei Wang, Yong Li, Weifeng Li, Hongwei Yu
The physiological role of Coenzyme Q10 (CoQ10) as an electron carrier suggests its association with redox potential. Overexpression of glyceraldehyde-3-phosphate dehydrogenase type I (gapA-1) in Rhodobacter sphaeroides elevated the NADH/NAD(+) ratio and meanwhile enhanced the CoQ10 content by 58%, but at the sacrifice of biomass. On the other hand, Vitreoscilla hemoglobin was heterologously expressed to enhance the oxygen uptake ability of the cells, leading to 127% improvement of biomass. Subsequent coexpression of gapA-1 and vgb resulted in a CoQ10 titer of 83...
June 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28433003/the-plastid-outer-membrane-localized-lptd1-is-important-for-glycerolipid-remodeling-under-phosphate-starvation
#9
Yi-Ching Hsueh, Christian Ehmann, Nadine Flinner, Roman Ladig, Enrico Schleiff
Glycerolipid synthesis in plants is coordinated between plastids and the endoplasmic reticulum (ER). A central step within the glycerolipid synthesis is the transport of phosphatidic acid from ER to chloroplasts. The chloroplast outer envelope protein TGD4 belongs to the LptD family conserved in bacteria and plants and selectively binds and may transports phosphatidic acid. We describe a second LptD-family protein in A. thaliana (atLPTD1; At2g44640) characterized by a barrel domain with an amino acid signature typical for cyanobacterial LptDs...
April 22, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28432918/a-quinoline-based-cu-2-ion-complex-fluorescence-probe-for-selective-detection-of-inorganic-phosphate-anion-in-aqueous-solution-and-its-application-to-living-cells
#10
Yanpeng Dai, Peng Wang, Jiaxin Fu, Kun Yao, Kuoxi Xu, Xiaobin Pang
A quinaldine functionalized probe QP has been designed and synthesized. It exhibited selective turn-off fluorescence response toward Cu(2+) ion over most of the biologically important ions at physiological pH. The binding ratio of the probe QP and Cu(2+) ion was determined to be 1:1 through fluorescence titration, Job's plot and ESI-MS. The binding constant (K) of Cu(2+) to probe QP was found to be 2.12×10(4)M(-1). Further, the Cu(2+) ensemble of probe QP was found to respond H2PO4(-) and HPO4(2-) among other important biological anions via fluorescence turn-on response at physiological pH...
April 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28432851/fungal-production-of-the-polysaccharide-pullulan-from-a-plant-hydrolysate
#11
Thomas P West
The ability of the fungus Aureobasidium pullulans ATCC 42023 to produce pullulan from hydrolysates of the native grass known as prairie cordgrass was investigated and examined relative to polysaccharide and cell biomass production, yield, and pullulan content of the polysaccharide. A pullulan concentration of 9.7 g l-1 and yield of 0.78 g g-1 was produced by ATCC 42023 when grown for 168 h at 30°C on a phosphate-buffered hydrolysate. The highest biomass level of 7.7 g l-1 was produced by ATCC 42023 after 168 h on a hydrolysate-containing complete medium...
April 22, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/28432843/vitamin-b1-in-critically-ill-patients-needs-and-challenges
#12
REVIEW
Jake T B Collie, Ronda F Greaves, Oliver A H Jones, Que Lam, Glenn M Eastwood, Rinaldo Bellomo
BACKGROUND: Thiamine has a crucial role in energy production, and consequently thiamine deficiency (TD) has been associated with cardiac failure, neurological disorders, oxidative stress (lactic acidosis and sepsis) and refeeding syndrome (RFS). This review aims to explore analytical methodologies of thiamine compound quantification and highlight similarities, variances and limitations of current techniques and how they may be relevant to patients. CONTENT: An electronic search of Medline, PubMed and Embase databases for original articles published in peer-reviewed journals was conducted...
April 22, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28432821/addition-of-hydrogen-peroxide-to-groundwater-with-natural-iron-induces-water-disinfection-by-photo-fenton-at-circumneutral-ph-and-other-photochemical-events
#13
Héctor Mario Gutiérrez-Zapata, John Jairo Alvear-Daza, Julián Andrés Rengifo-Herrera, Janeth Sanabria
Samples of natural groundwater (with low turbidity, neutral pH and 0.3 mg L(-1) iron concentration) inoculated with Escherichia coli K-12, were exposed to simulated solar light both in the presence and absence 10 mg L(-1) of H2 O2. Results demonstrated that the viability of E. coli (by DVC-FISH) was grounded to zero after 360 min of irradiation. This abatement could be caused by the oxidative stress induced by •OH radicals or another photo-induced reactive oxygen species. Two 2(3) factorial experimental designs enabled the evaluation of the effects of chemical factors on the inactivation of E...
April 22, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28432793/single-and-dual-cyclodextrins-systems-for-the-enantiomeric-and-diastereoisomeric-separations-of-structurally-related-dihydropyridone-analogues
#14
Thibaut Delplanques, Rajaa Boulahjar, Julie Charton, Corentin Houze, Michaël Howsam, Anne-Catherine Servais, Marianne Fillet, Emmanuelle Lipka
Cyclodextrin capillary electrophoresis methods (CD-CZE) were developed for complete enantiomeric and diastereoisomeric separations of a series of ten dihydropyridone analogues, of which eight were neutral, one was anionic and one was cationic. Ten different systems comprising one or two cyclodextrins were found to successfully separate the isomers thanks to a screening approach. Among the tested cyclodextrins, HS-γ-CD, either in a single or in a dual system, in a phosphate buffer using capillaries dynamically coated with polyethylene oxide (PEO), and SBE-β-CD, either in a single or in a dual system, in a borate buffer using uncoated capillaries, were the most selective selectors...
April 22, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28432604/phosphate-imbalance-in-patients-with-heart-failure
#15
REVIEW
E C Christopoulou, T D Filippatos, E Megapanou, M S Elisaf, G Liamis
Patients with heart failure often exhibit electrolyte abnormalities, such as hyponatremia or hypokalemia/hyperkalemia. Although not as common as the other electrolyte disturbances observed in patients with heart failure, phosphate imbalance is also of high importance in this population. The aim of this review is to present the mechanisms of low or high phosphate serum levels in patients with heart failure and its role in the pathogenesis and progression of heart dysfunction. Hypophosphatemia in patients with heart failure may be the result of co-existing electrolyte and acid-base abnormalities, pharmacological treatments, decreased intestinal absorption or secondary to sympathetic nervous system activation and co-morbidities, such as diabetes mellitus or heavy alcohol consumption...
April 22, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28432465/ppar%C3%AE-activation-regulates-lipid-droplet-formation-and-lactate-production-in-rat-sertoli-cells
#16
A Gorga, G M Rindone, M Regueira, E H Pellizzari, M C Camberos, S B Cigorraga, M F Riera, M N Galardo, S B Meroni
Sertoli cells provide the structural and nutritional support for germ cell development; they actively metabolize glucose and convert it to lactate, which is an important source of energy for germ cells. Furthermore, Sertoli cells can oxidize fatty acids, a metabolic process that is assumed to fulfill their own energy requirements. Fatty acids are stored as triacylglycerides within lipid droplets. The regulation of fatty acid storage in conjunction with the regulation of lactate production may thus be relevant to seminiferous tubule physiology...
April 21, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28432452/fluorescent-angioscopic-imaging-of-calcium-phosphate-tribasic-precursor-of-hydroxyapatite-the-major-calcium-deposit-in-human-coronary-plaques
#17
Takanobu Kobayashi, Osamu Nakagawa, Seiichiro Shirai, Ei Shimoyama, Nobuyuki Hiruta, Yasumi Uchida
Coronary calcification is a risk factor for ischemic heart disease. Hydroxyapatite that is formed by polymerization from calcium phosphate tribasic (CPT) is the major constituent of coronary calcium deposits. If CPT could be visualized, coronary calcification could be predicted and prevented. We discovered that when CPT and collagen I, the main constituent of collagen fibers, are mixed with lac dye (LD) and then exposed to fluorescent light excited at 345 ± 15 nm and emitted at 420 nm, a purple fluorescence that is characteristic of CPT only is elicited...
April 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28432298/endogenous-two-photon-excited-fluorescence-imaging-characterizes-neuron-and-astrocyte-metabolic-responses-to-manganese-toxicity
#18
Emily Stuntz, Yusi Gong, Disha Sood, Volha Liaudanskaya, Dimitra Pouli, Kyle P Quinn, Carlo Alonzo, Zhiyi Liu, David L Kaplan, Irene Georgakoudi
As neurodegenerative conditions are increasingly linked to mitochondrial dysfunction, methods for studying brain cell metabolism at high spatial resolution are needed to elucidate neurodegeneration mechanisms. Two-photon excited fluorescence (TPEF) imaging is a non-destructive, high-resolution technique for studying cell metabolism via endogenous fluorescence of reduced nicotinamide adenine dinucleotide (phosphate) (NAD(P)H) and flavin adenine dinucleotide (FAD). We employed TPEF to study the metabolism of primary rat astrocyte and neuronal cultures under normal growth conditions and in response to manganese (Mn) treatment...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28432276/identification-of-common-immunodominant-antigens-of-eimeria-tenella-eimeria-acervulina-and-eimeria-maxima-by-immunoproteomic-analysis
#19
Lianrui Liu, Xinmei Huang, Jianhua Liu, Wenyu Li, Yihong Ji, Di Tian, Lu Tian, Xinchao Yang, Lixin Xu, Ruofeng Yan, Xiangrui Li, Xiaokai Song
Clinical chicken coccidiosis is mostly caused by simultaneous infection of several Eimeria species, and host immunity against Eimeria is species-specific. It is urgent to identify common immunodominant antigen of Eimeria for developing multivalent anticoccidial vaccines. In this study, sporozoite proteins of Eimeria tenella, Eimeria acervulina and Eimeria maxima were analyzed by two-dimensional electrophoresis (2DE). Western bot analysis was performed on the yielded 2DE gel using antisera of E. tenella E. acervulina and E...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28431974/unique-mitochondrial-localization-of-arginase-1-and-2-in-hepatocytes-of-air-breathing-walking-catfish-clarias-batrachus-and-their-differential-expression-patterns-under-hyper-ammonia-stress
#20
Bodhisattwa Banerjee, Debaprasad Koner, Priyanka Lal, Nirmalendu Saha
Arginase (ARG) catalyzes the final step of ornithine-urea cycle (OUC) leading to a conversion of L-arginine to L-ornithine and urea. Several isoforms of ARG have been reported in vertebrates, out of which the two predominant isoforms are the cytosolic ARG1 and the mitochondrial ARG2. The air-breathing walking catfish (Clarias batrachus) is frequently being challenged by different environmental insults such as hyper-ammonia, dehydration and osmotic stresses in their natural habitats throughout the year. The present study investigated the active presence of ARG1 and ARG2 isoforms in hepatocytes along with unique localization of both the isoforms inside the mitochondria, and also their specific expression patterns under hyper-ammonia stress (5mM NH4Cl) in isolated hepatocytes of walking catfish...
April 18, 2017: Gene
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