keyword
MENU ▼
Read by QxMD icon Read
search

Gc

keyword
https://www.readbyqxmd.com/read/28532002/electrochemical-sensor-for-detection-of-hydrogen-peroxide-modified-with-prussian-blue-electrodeposition-on-nitrogen-phosphorus-and-sulfur-co-doped-porous-carbons-chitosan
#1
Xiurong Zhai, Yonghong Li, Jisen Li, Chengyang Yue, Xiaowu Lei
Nitrogen, phosphorus and sulfur co-doped porous carbons (N, P, S@PC) were well dispersed in the chitosan (CS) acid solution, in particular via covalently interaction, which could avoid the aggregation of N, P, S@PC in most solvents. Moreover, CS could also avoid N, P, S@PC leakage from the modified electrode. A novel electrochemical sensor was then developed through prussian blue (PB) was electrodeposited on the glass carbon (GC) electrode modified with N, P, S@PC-CS composite. Results with scanning electron microscopy image, illustrate that PB/N, P, S@PC-CS composite distributes very uniformly on the substrate surface, which is hoped to be very attractive for determination of hydrogen peroxide (H2O2)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531862/unravelling-the-suitability-of-biological-induction-for-halophilic-lipase-production-by-halomonas-sp-lm1c-cultures
#2
Esther Gutiérrez-Arnillas, María Arellano, Francisco J Deive, Ana Rodríguez, María Ángeles Sanromán
In this study, the viability of using biological induction as an alternative to the conventional chemical induction in lipase production by a novel halophilic microorganism, Halomonas sp. LM1C, has been demonstrated. Thus, a 9-times increase of lipase activity (3000U/L) was recorded when Staphylococcus equorum sp. AMC7 was present in the medium, which is competitive with the results obtained when Triton X-100 was added as chemical inducer. The GC-MS data allowed concluding the true nature of the biological inducer effect, as the existence of high percentages of isomeric forms of pentadecanoic acid were detected...
May 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28531831/workflow-methodology-for-rat-brain-metabolome-exploration-using-nmr-lc-ms-and-gc-ms-analytical-platforms
#3
Binta Diémé, Antoine Lefèvre, Lydie Nadal-Desbarats, Laurent Galineau, Blandine Madji Hounoum, Frédéric Montigny, Hélène Blasco, Christian R Andres, Patrick Emond, Sylvie Mavel
We developed a multi-platform approach for the metabolome exploration of rat brain tissue, using liquid chromatography coupled with mass spectrometry (LC-MS), nuclear magnetic resonance spectroscopy (NMR) and gas-chromatography coupled with mass spectrometry (GC-MS). The critical steps for metabolite exploration of cerebral tissues are tissue lysis and metabolites extraction. We first evaluated the impact of freeze-drying compared to wet tissue metabolites extraction using NMR and LC-MS with a reversed phase liquid chromatography...
May 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28531658/co-plantation-of-aquatic-macrophytes-typha-angustifolia-and-paspalum-scrobiculatum-for-effective-treatment-of-textile-industry-effluent
#4
Vishal V Chandanshive, Niraj R Rane, Asif S Tamboli, Avinash R Gholave, Rahul V Khandare, Sanjay P Govindwar
Field treatment of textile industry effluent was carried out in constructed drenches (91.4m×1.2m×0.6m; 65.8m(3)) planted independently with Typha angustifolia, Paspalum scrobiculatum and their co-plantation (consortium-TP). The in situ treatment of effluent by T. angustifolia, P. scrobiculatum and consortium-TP was found to decrease ADMI color value by 62, 59 and 76%, COD by 65, 63 and 70%, BOD by 68, 63 and 75%, TDS by 45, 39 and 57%, and TSS by 35, 31 and 47%, respectively within 96h. Heavy metals such as arsenic, cadmium, chromium and lead were also removed up to 28-77% after phytoremediation...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531656/biodegradation-of-phthalic-acid-esters-paes-and-in-silico-structural-characterization-of-mono-2-ethylhexyl-phthalate-mehp-hydrolase-on-the-basis-of-close-structural-homolog
#5
Neha Singh, Vikram Dalal, Jai Krishna Mahto, Pravindra Kumar
Three bacterial strains capable of degrading phthalates namely Pseudomonas sp. PKDM2, Pseudomonas sp. PKDE1 and Pseudomonas sp. PKDE2 were isolated and characterized for their degradative potential. These strains efficiently degraded 77.4%-84.4% of DMP, 75.0%-75.7% of DEP and 71.7%-74.7% of DEHP, initial amount of each phthalate is 500mgL(-1) of each phthalate, after 44h of incubation. GC-MS results reveal the tentative DEHP degradation pathway, where hydrolases mediate the breakdown of DEHP to phthalic acid (PA) via an intermediate MEHP...
April 25, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531201/evolutionary-forces-affecting-synonymous-variations-in-plant-genomes
#6
Yves Clément, Gautier Sarah, Yan Holtz, Felix Homa, Stéphanie Pointet, Sandy Contreras, Benoit Nabholz, François Sabot, Laure Sauné, Morgane Ardisson, Roberto Bacilieri, Guillaume Besnard, Angélique Berger, Céline Cardi, Fabien De Bellis, Olivier Fouet, Cyril Jourda, Bouchaib Khadari, Claire Lanaud, Thierry Leroy, David Pot, Christopher Sauvage, Nora Scarcelli, James Tregear, Yves Vigouroux, Nabila Yahiaoui, Manuel Ruiz, Sylvain Santoni, Jean-Pierre Labouisse, Jean-Louis Pham, Jacques David, Sylvain Glémin
Base composition is highly variable among and within plant genomes, especially at third codon positions, ranging from GC-poor and homogeneous species to GC-rich and highly heterogeneous ones (particularly Monocots). Consequently, synonymous codon usage is biased in most species, even when base composition is relatively homogeneous. The causes of these variations are still under debate, with three main forces being possibly involved: mutational bias, selection and GC-biased gene conversion (gBGC). So far, both selection and gBGC have been detected in some species but how their relative strength varies among and within species remains unclear...
May 22, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28530614/effect-of-traditional-chinese-cooking-methods-on-fatty-acid-profiles-of-vegetable-oils
#7
Yamin Cui, Pengfei Hao, Bingjie Liu, Xianghong Meng
The effect of four frying processes (vegetable salad, stir frying, pan frying, and deep frying) on fatty acid composition of ten vegetable oils (peanut oil, soybean oil, rapeseed oil, corn oil, sunflower seed oil, rice bran oil, olive oil, sesame oil, linseed oil, and peony seed oil) was investigated using GC-MS. The result showed that trans-fatty acid (TFA) was produced during all processes. Rapeseed oil had the highest TFA content in vegetable salad oil with 2.88% of total fatty acid. The TFA content of sunflower seed oil was 0...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530579/fatty-acid-and-sterol-composition-of-tea-seed-oils-their-comparison-by-the-fancytiles-approach
#8
Xiaoqin Wang, Qiumei Zeng, Vito Verardo, María Del Mar Contreras
Confusion among tea seed oils from Sect. Thea, Oleifera and Camellia in Camellia is a widespread problem in research and production. In this work, 22 fatty acids, squalene and 13 phytosterols in the three groups of tea seed oils from 16 Chinese regions were analyzed with GC-FID and GC-MS respectively. Thea oils were significantly higher in linoleic (C18:2) and palmitic (C16:0) acids but lower in oleic acid (C18:1) than Camellia and Oleifera oils while the latter two overlapped in major fatty acids. Similarly, Camellia and Oleifera oils clustered together based on the data of squalene and 12 phytosterols while Thea oils branched from them in HCA...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530568/characterization-of-the-key-aroma-compounds-in-different-light-aroma-type-chinese-liquors-by-gc-olfactometry-gc-fpd-quantitative-measurements-and-aroma-recombination
#9
Yunwei Niu, Zhengmin Yao, Qing Xiao, Zuobing Xiao, Ning Ma, Jiancai Zhu
The aroma profiles of five Chinese light aroma-type liquors were investigated in this study. Gas chromatography-olfactometry (GC-O) and GC-flame photometric detection (FPD) were employed to investigate aroma-active compounds. A total of 80 odorants were identified, including ten sulfur compounds. In addition, aroma-active compounds (FD≥16) were determined, according to quantitative study and odor activity values (OAVs). Finally 27 key aroma compounds, mainly possessing fruity and floral notes, were successfully used to simulate the aromas of Chinese light aroma-type liquors by dissolving them in 53% (v/v) hydroalcoholic solution in their natural concentrations...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530567/using-combined-optimization-gc-ms-and-analytical-technique-to-analyze-the-germination-effect-on-phenolics-dietary-fibers-minerals-and-gaba-contents-of-kodo-millet-paspalum-scrobiculatum
#10
Seema Sharma, Dharmesh C Saxena, Charanjit S Riar
A central composite rotatable design was applied to study the effects of soaking time, germination time and temperature on the responses; total phenolics, total flavonoids and antioxidant activity for the biochemical enhancement of bioactive components of Kodo millet. The optimum conditions for producing germinated Kodo millet flour of highest TPC (83.01mgGAE/100g), TFC (87.53mgRUE/g) and AoxA (91.34%), were soaking time (13.81h), germination temperature (38.75°C) and germination time (35.82h). Protein increased significantly form, 6...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530403/propitious-dendritic-cu2o%C3%AF-pt-nanostructured-anodes-for-direct-formic-acid-fuel-cells
#11
Gumaa A El-Nagar, Ahmad M Mohammad, Mohamed S El-Deab, Bahgat E El-Anadouli
This study introduces a novel competent dendritic copper oxide-platinum nanocatalyst (nano-Cu2O-Pt) immobilized onto a glassy carbon (GC) substrate for formic acid (FA) electrooxidation (FAO); the prime reaction in the anodic compartment of direct formic acid fuel cells (DFAFCs). Interestingly, the proposed catalyst exhibited an outstanding improvement for FAO compared to the traditional platinum nanoparticles (nano-Pt) modified GC (nano-Pt/GC) catalyst. This was evaluated from steering the reaction mechanism towards the desired direct route producing carbon dioxide (CO2); consistently with mitigating the other undesired indirect pathway producing carbon monoxide (CO); the potential poison deteriorating the catalytic activity of typical Pt-based catalysts...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530340/-can-post-traumatic-stress-disorder-be-prevented-with-glucocorticoids
#12
REVIEW
Hagit Cohen, Zeev Kaplan, Joseph Zohar
Glucocorticoids (GCs) play a major role in orchestrating the complex physiological and behavioral reactions essential for the maintenance of homeostasis. These compounds enable the organism to prepare for, respond to and cope with the acute demands of physical and emotional stressors. The appropriate GC release, commensurate with stressor severity, enables the body to properly contain stress responses so as to promote recovery by rapidly restoring homeostasis. Indeed, inadequate GC release following stress not only delays recovery by disrupting biological homeostasis in the short run but can also interfere with the processing or interpretation of stressful information that results in long-term disruptions in memory integration...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28530296/post-cycloaddition-modification-of-a-porous-mof-for-improved-gc-separation-of-ethanol-and-water
#13
Ya-Jun Zhang, Cheng Chen, Li-Xuan Cai, Bin Tan, Xiao-Dong Yang, Jie Zhang, Min Ji
An olefin-containing pyridinium derivative, 1-(4-carboxybenzyl)-4-[2-(4-pyridyl)-vinyl]-pyridinium chloride (HBCbpeCl) has been introduced into a novel 2D metal-organic framework with rare right- and left-handed spiral nanotubular channels arranged alternately in the structure. The 1D channel is modified by positively-charged pyridinium segments, which shows high affinities to Lewis basic molecules such as methanol, ethanol, and water vapor. Additionally, the BCbpe molecules in the structure have been directed through cation-π interactions to be aligned antiparallel to each other with the C[double bond, length as m-dash]C double bond arranged properly for [2 + 2] photocycloaddition, which can be triggered to undergo structural transformation from 2D to 3D...
May 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28529617/combined-detection-of-plasma-zic1-hoxd10-and-runx3-methylation-is-a-promising-strategy-for-early-detection-of-gastric-cancer-and-precancerous-lesions
#14
Zhenghua Lin, Mengzhao Luo, Xueqing Chen, Xingkang He, Yun Qian, Sanchuan Lai, Jianmin Si, Shujie Chen
We try to explore the value of aberrant DNA methylation of several cancer-related genes in plasma as non-invasive biomarkers for gastric cancer (GC) and precancerous lesions. By using methylation-specific polymerase chain reaction assay we determined the methylation status of three selected genes ZIC1, HOXD10 and RUNX3 in blood samples from patients with GC and precancerous lesions. We discovered that the methylation rate of ZIC1, HOXD10 and RUNX3 increased significantly in the progression of gastric carcinogenesis...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28529596/andrographolide-induces-apoptotic-and-non-apoptotic-death-and-enhances-tumor-necrosis-factor-related-apoptosis-inducing-ligand-mediated-apoptosis-in-gastric-cancer-cells
#15
Sung-Chul Lim, Ho Jong Jeon, Keun Hong Kee, Mi Ja Lee, Ran Hong, Song Iy Han
Andrographolide, a natural compound isolated from Andrographis paniculata, has been reported to possess antitumor activity. In the present study, the effect of andrographolide in human gastric cancer (GC) cells was investigated. Andrographolide induced cell death with apoptotic and non-apoptotic features. At a low concentration, andrographolide potentiated apoptosis and reduction of clonogenicity triggered by recombinant human tumor necrosis factor-related apoptosis-inducing ligand (rhTRAIL). Exposure of GC cells to andrographolide altered the expression level of several growth-inhibiting and apoptosis-regulating proteins, including death receptors...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529571/epigenetic-modulation-associated-with-carcinogenesis-and-prognosis-of-human-gastric-cancer
#16
Fuminori Sonohara, Yoshikuni Inokawa, Masamichi Hayashi, Yasuhiro Kodera, Shuji Nomoto
Gastric cancer (GC) is a leading cause of cancer-related death, particularly in Asia. Epidemiological and other clinical studies have identified an association between a number of risk factors, including Helicobacter pylori, and GC. A number of studies have also examined genetic changes associated with the development and progression of GC. When considering the clinical significance of the expression of a specific gene, its epigenetic modulation should be considered. Epigenetic modulation appears to be a primary driver of changes in gastric tissue that promotes carcinogenesis and progression of GC and other neoplasms...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529558/sirna-mediated-knockdown-of-id1-disrupts-nanog-and-oct-4-mediated-cancer-stem-cell-likeness-and-resistance-to-chemotherapy-in-gastric-cancer-cells
#17
Linlin Li, Xiaoyong Wei, Baofeng Wu, Yuanli Xiao, Mingzhu Yin, Qiaohong Yang
DNA-binding protein inhibitor ID-1 (ID1) serves an essential role in tumor progression, and the self-renewal and pluripotency of embryonic stem cells. However, the effect of ID1 on the stemness and cancer stem cell (CSC)-like properties of gastric adenocarcinoma cells remains to be elucidated. In the present study, effective ID1 knockdown was achieved in gastric cancer (GC) cells using small interfering RNA, and the self-renewal ability and cisplatin (DDP) sensitivity of GC cells was subsequently examined. ID1 knockdown in the MKN-28 and MGC-803 cell lines was demonstrated to significantly suppress colony formation (P=0...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28528947/syntrophic-association-of-termite-gut-bacterial-symbionts-with-bifunctional-characteristics-of-cellulose-degrading-and-polyhydroxyalkanoate-producing-bacteria
#18
Balasubramanian Cibichakravarthy, Subramani Abinaya, Solai Ramatchandirane Prabagaran
The guild between higher termites and their partnership with the diverse community of bacteria and archaea in their gut is a marvel evolutionary achievement. Sustained attempts were made worldwide with a quest for identifying viable important biological macromolecule polyhydroxyalkanoate (PHA) accumulating bacteria. Termite gut serve as a novel source for bacteria with dual properties like PHA production as well as cellulose degradation. Among 40 isolates cultivated, 32.5% turned positive for PCR based screening of PhaC gene...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28528844/prevalence-of-chlamydia-trachomatis-and-neisseria-gonorrhea-and-associated-factors-among-women-living-with-human-immunodeficiency-virus-in-brazil-a-multicenter-study
#19
Angelica E Miranda, Mariangela F Silveira, Ana Gabriela Travassos, Teresinha Tenório, Isabel Cristina Chulvis do Val, Leonor de Lannoy Tavares, Hortensio Simões de Mattos Junior, Newton Sergio de Carvalho
BACKGROUND: Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) cause infections in the female genital tract, increasing susceptibility to and infectiousness of HIV. The objectives of the present study were to determine the prevalence and associated factors of CT and GC infection among HIV-infected women in Brazil. METHODS: Cross-sectional study conducted from March to December 2015, including HIV-infected women attending referral centers in nine states of Brazil, aged 18-49 years, nonpregnant...
May 18, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28528436/the-unresolved-riddle-of-glucocorticoid-withdrawal
#20
REVIEW
F Guerrero Pérez, A P Marengo, C Villabona Artero
Glucocorticoid (GC) therapy is the most common cause of adrenal insufficiency (AI). The real prevalence of AI after GC is unknown but it could involve more than 30% of patients. Some gene variation has been associated with the variability of hypothalamic-pituitary-adrenal (HPA) axis and this issue could contribute to the individual variation of adrenal function after GC treatment. Symptoms and signs of AI are nonspecific and frequently the diagnosis is delayed. Dosage, duration of treatment, administration route and serum cortisol value are not completely useful to predict AI...
May 20, 2017: Journal of Endocrinological Investigation
keyword
keyword
77236
1
2
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"