Read by QxMD icon Read


Po-Han Chen, Jen-Tsan Chi, Michael Boyce
In metazoans, thousands of intracellular proteins are modified with O-linked β-N-acetylglucosamine (O-GlcNAc) in response to a wide range of stimuli and stresses. In particular, a complex and evolutionarily conserved interplay between O-GlcNAcylation and oxidative stress has emerged in recent years. Here, we review the current literature on the connections between O-GlcNAc and oxidative stress, with a particular emphasis on major signaling pathways, such as KEAP1/NRF2, FOXO, NFκB, p53 and cell metabolism...
March 14, 2018: Glycobiology
Francesca Micoli, Paolo Costantino, Roberto Adamo
Cell surface carbohydrates have been proven optimal targets for vaccine development. Conjugation of polysaccharides to a carrier protein triggers a T-cell dependent immune response to the glycan moiety. Licensed glycoconjugate vaccines are produced by chemical conjugation of capsular polysaccharides to prevent meningitis caused by meningococcus, pneumococcus and Haemophilus influenzae type b. However, other classes of carbohydrates (O-antigens, exopolysaccharides, wall/teichoic acids) represent attractive targets for developing vaccines...
March 14, 2018: FEMS Microbiology Reviews
Edna M S Oliveira, Francisco R Silva, Crislânia C O Morais, Thiago Mielle B F Oliveira, Carlos A Martínez-Huitle, Artur J Motheo, Cynthia C Albuquerque, Suely S L Castro
This study investigated the anodic oxidation of phenolic wastewater generated by cashew-nut processing industry (CNPI) using active (Ti/RuO2 -TiO2 ) and inactive (boron doped diamond, BDD) anodes. During electrochemical treatment, various operating parameters were investigated, such as current density, chemical oxygen demand (COD), total phenols, O2 production, temperature, pH, as well as current efficiency and energy consumption. After electrolysis under optimized working conditions, samples were evaluated by chromatography and toxicological tests against L...
February 9, 2018: Chemosphere
Tianhua Yang, Jian Wang, Bingshuo Li, Xingping Kai, Wanli Xing, Rundong Li
This study extended previous work investigating two-step liquefaction by supercritical ethanol of rice straw under CO2 atmosphere at temperatures of 270-345 °C. Subcritical CO2 -subcritical ethanol (SubCO2 -SubEtOH) pretreatment decreased the content of lignin in the rice stalk from 22.94 to 21.43 wt%. The results showed that although oxygen-transfer reaction, transesterification, carbonylation, and other reactions may occur with the supercritical CO2 -supercritical ethanol (ScCO2 -ScEtOH) liquefaction reactions, transesterification was the main reaction...
February 23, 2018: Bioresource Technology
H Lindman, M Andersson, J Ahlgren, E Balslev, A Sverrisdottir, S B Holmberg, N O Bengtsson, E H Jacobsen, A B Jensen, J Hansen, M K Tuxen, L Malmberg, K Villman, H Anderson, B Ejlertsen, J Bergh, C Blomqvist
STUDY AIM: Retrospective studies have demonstrated a worse outcome in breast cancer patients not developing leukopenia during adjuvant chemotherapy. The SBG 2000-1 is the first randomised trial designed to compare individually dosed chemotherapy without G-CSF support based on grade of toxicity to standard-dosed chemotherapy based on body surface area (BSA). METHODS: Patients with early breast cancer were included and received the first cycle of standard FEC (fluorouracil 600 mg/m2 , epirubicin 60 mg/m2 , cyclophosphamide 600 mg/m2 )...
March 13, 2018: European Journal of Cancer
María S Islas, Juan J Martínez Medina, Oscar E Piro, Gustavo A Echeverría, Evelina G Ferrer, Patricia A M Williams
Coumarins (2H-chromen-2-one) are oxygen-containing heterocyclic compounds that belong to the benzopyranones family. In this work we have synthesized different coordination complexes with coumarin-3-carboxylic acid (HCCA), o-phenanthroline (phen) and zinc(II). In the reported [Zn(CCA)2 (H2 O)2 ] complex, coumarin-3-carboxylate (CCA) is acting as a bidentate ligand while in the two prepared complexes, [Zn(phen)3 ]CCA(NO3 ) (obtained as a single crystal) and [Zn(CCA)2 phen].4H2 O, CCA is acting as a counterion of the complex cation [Zn(phen)3 ]+2 or coordinated to the metal center along with phen, respectively...
March 7, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
A Garbout, M Férid
Considering the features in changing the structure and properties of rare earth titanates pyrochlores, the substituted Dy2 Ti2 O7 may be very attractive for various applications. Effect of Sm and Y substitution on the structural properties of Dy2 Ti2 O7 ceramic was established. These ceramics were prepared by solid-state reaction and characterized by X-ray diffraction and Raman spectroscopy. Both analysis show that YDyTi2 O7 with the pyrochlore structure is obtained after heating at 1400°C, but SmDyTi2 O7 has already formed after sintering at 1200°C...
March 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Peng-Xiang Pei, Jing-Han Hu, Chen Long, Peng-Wei Ni
A novel chemosensor 2-((Z)-(((E)-quinolin-2-ylmethylene)hydrazono)methyl)phenol PX has been successfully designed and synthesized, which showed both colorimetric and "turn-on" fluorescence responses for CN- in DMSO/H2 O (3:2, v/v; pH=7.20) solution. The sensor could respond effectively to the stimulation of CN- ions via deprotonation and sensing mechanism of intramolecular charge transfer (ICT). Moreover, the sensor PX was successfully utilized to detect CN- in bitter almond, and the detection limit on fluorescence response of PX towards CN- was down to 4...
March 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Mingfei Zeng, Huachuan Cao
Short chain fatty acids (SCFA) and ketone bodies recently emerged as important physiological relevant metabolites because of their association with microbiota, immunology, obesity and other metabolic states. They were commonly analyzed by GC-MS with long run time and laborious sample preparation. In this study we developed a novel LC-MS/MS method using fast derivatization coupled with liquid-liquid extraction to detect SCFA and ketone bodies in plasma and feces. Several different derivatization reagents were evaluated to compare the efficiency, the sensitivity and chromatographic separation of structural isomers...
March 8, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Ya'nan Liu, Na Liu, Yuning Chen, Weifeng Zhang, Ruixiang Qu, Qingdong Zhang, Tzungyu-Shih, Lin Feng, Yen Wei
Food waste water is one of the most urgent environmental problems for the close connection between food and our daily life. Herein, we use a simple hydrothermal method to prepare a highly efficient catalyst-CeO2 /Co3 O4 compound on the stainless steel mesh, aiming for food waste water treatment. Possessing the superhydrophilic property and catalytic ability under ultraviolet light, CeO2 /Co3 O4 coated mesh has successfully processed three representative contaminants in food wastewater, which are soybean oil (food oil), AR (food dye) and VA (food flavor) simultaneously with an one-step filtration...
March 9, 2018: Water Research
Jialiang Liang, Fuyang Liu, Mian Li, Wen Liu, Meiping Tong
Magnetic Fe3 O4 @BiOI@AgI (FBA) spheres were synthesized through a multi-step process. The fabricated photocatalysts were characterized by different techniques. To testify the visible light driven photocatalytic activity of FBA, Rhodamine B and Bisphenol A were chosen as model common and emerging organic contaminants, respectively. While, gram-negative strain Escherichia coli was selected as model waterborne bacteria. The results showed that under visible light irradiation, FBA contained strong photocatalytic degradation capacity towards both RhB and BPA...
March 10, 2018: Water Research
Alexandra M V Wennberg, Clinton E Hagen, Mary M Machulda, John H Hollman, Rosebud O Roberts, David S Knopman, Ronald C Petersen, Michelle M Mielke
Levels of insulin-like growth factor (IGF)-1, IGF-binding protein (IGFBP)-3, and their ratio in the blood may be useful for monitoring those at risk of cognitive and functional decline. However, the association between IGF measures and functional and cognitive outcomes has been mixed, and the associations may vary by sex. The present study investigated the cross-sectional, sex-specific associations between serum measures total IGF-1, IGFBP-3, and the IGF-1/IGFBP-3 ratio, gait speed, and cognition in 1320 cognitively unimpaired participants aged 50-95 years enrolled in the Mayo Clinic Study of Aging...
February 19, 2018: Neurobiology of Aging
Omar A Z Tutakhel, Frans Bianchi, Daniël A Smits, René J M Bindels, Joost G J Hoenderop, Jenny van der Wijst
The NaCl cotransporter (NCC) is essential for electrolyte homeostasis and control of blood pressure. The human SLC12A3 gene, which encodes NCC, gives rise to 3 isoforms, of which only the shortest isoform [NaCl cotransporter isoform 3 (NCC3 )] has been studied extensively. All NCC isoforms share key phosphorylation sites at T55 and T60 that are essential mediators of NCC function. Recently, a novel phosphorylation site at S811 was identified in isoforms 1 and 2 [NaCl cotransporter splice variant (NCCSV )], which are only present in humans and higher primates...
March 16, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Carrie J Butts-Wilmsmeyer, Rita H Mumm, Kent Rausch, Gurshagan Kandhola, Nicole Yana, Mary Happ, Alexandra Ostezan, Matthew Wasmund, Martin O Bohn
The notion that many nutrients and beneficial phytochemicals in maize are lost due to food product processing is common, but this has not been studied in detail for the phenolic acids. Information regarding changes in phenolic acid content throughout processing is highly valuable because some phenolic acids are chemopreventive agents of aging-related diseases. It is unknown when and why these changes in phenolic acid content might occur during processing, whether some maize genotypes might be more resistant to processing induced changes in phenolic acid content than other genotypes, or if processing affects the bioavailability of phenolic acids in maize-based food products...
March 16, 2018: Journal of Agricultural and Food Chemistry
Charles Hellec, Maxime Delos, Mathieu Carpentier, Agnès Denys, Fabrice Allain
Heparan sulfate 3-O-sulfotransferases (HS3STs) catalyze the final maturation step of heparan sulfates. Although seven HS3ST isozymes have been described in human, 3-O-sulfation is a relatively rare modification, and only a few biological processes have been described to be influenced by 3-O-sulfated motifs. A conflicting literature has recently reported that HS3ST2, 3A, 3B and 4 may exhibit either tumor-promoting or anti-oncogenic properties, depending on the model used and cancer cell phenotype. Hence, we decided to compare the consequences of the overexpression of each of these HS3STs in the same cellular model...
2018: PloS One
Souheil El-Chemaly, Kevin J O'Brien, Steven D Nathan, Gerald L Weinhouse, Hilary J Goldberg, Jean M Connors, Ye Cui, Todd L Astor, Philip C Camp, Ivan O Rosas, Merte Lemma, Vladislav Speransky, Melissa A Merideth, William A Gahl, Bernadette R Gochuico
Pulmonary fibrosis is a progressive, fatal manifestation of Hermansky-Pudlak syndrome (HPS). Some patients with advanced HPS pulmonary fibrosis undergo lung transplantation despite their disease-associated bleeding tendency; others die while awaiting donor organs. The objective of this study is to determine the clinical management and outcomes of a cohort with advanced HPS pulmonary fibrosis who were evaluated for lung transplantation. Six patients with HPS-1 pulmonary fibrosis were evaluated at the National Institutes of Health Clinical Center and one of two regional lung transplant centers...
2018: PloS One
K D P P Gunathilake, K K D S Ranaweera, H P V Rupasinghe
The aim of the present study was to evaluate the effect of cooking (boiling, steaming, and frying) on anti-inflammation associated properties in vitro of six popularly consumed green leafy vegetables in Sri Lanka, namely: Centella asiatica , Cassia auriculata , Gymnema lactiferum , Olax zeylanica , Sesbania grnadiflora, and Passiflora edulis. The anti-inflammation associated properties of methanolic extracts of cooked leaves were evaluated using four in vitro biological assays, namely, hemolysis inhibition, proteinase inhibition, protein denaturation inhibition, and lipoxygenase inhibition...
March 16, 2018: Plants (Basel, Switzerland)
Qiang Zhang, Tianyuan Xin, Xiaoke Lu, Yuexia Wang
We exploited novel two-dimensional (2D) carbon selenide (CSe) with a structure analogous to phosphorene, and probed its electronics and optoelectronics. Calculating phonon spectra using the density functional perturbation theory (DFPT) method indicated that 2D CSe possesses dynamic stability, which made it possible to tune and equip CSe with outstanding properties by way of X-doping (X = O, S, Te), i.e., X substituting Se atoms. Then systematic investigation on the structural, electronic, and optical properties of pristine and X-doped monolayer CSe was carried out using the density functional theory (DFT) method...
March 16, 2018: Materials
William Martinez, James W Pichert, Gerald B Hickson, Casey H Braddy, Amy J Brown, Thomas F Catron, Ilene N Moore, Morgan R Stampfle, Lynn E Webb, William O Cooper
OBJECTIVES: The aims of the study were to develop a valid and reliable taxonomy of coworker reports of alleged unprofessional behavior by physicians and advanced practice professionals and determine the prevalence of reports describing particular types of unprofessional conduct. METHODS: We conducted qualitative content analysis of coworker reports of alleged unprofessional behavior by physicians and advanced practice professionals to create a standardized taxonomy...
March 15, 2018: Journal of Patient Safety
Brin Freund, James J Gugger, Alexandra Reynolds, William O Tatum, Jan Claassen, Peter W Kaplan
PURPOSE: Periodic discharges (PDs) are EEG patterns denoting brain dysfunction and ictal tendency. Their exact meaning regarding etiology and outcomes is not well known. In particular, bilateral independent PDs (BIPDs) are poorly described. METHODS: We performed a retrospective, multicenter study evaluating neuroimaging, epileptic, clinical, and EEG correlates of BIPDs. RESULTS: Twenty-five patients studied with a mean Glasgow Coma Scale 6...
March 15, 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"