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Partha Pratim Roy et al.
Bioorganic chemistry, 56, 1-7 (2014-06-03)
The objective of the present work was tantamount to explain the antiperoxidative potential and structural requirements of twenty-eight structurally diverse classes of antioxidants on docetaxel-induced lipid peroxidation. Both experimental and computational approaches were taken to the work. The experiments were
Christopher A McGoldrick et al.
BMC cancer, 14, 675-675 (2014-09-23)
Cancer cell esterases are often overexpressed and can have chiral specificities different from that of the corresponding normal cells and can, therefore, be useful targets for activating chemotherapeutic prodrug esters. Prodrug esters are inactive compounds that can be preferentially activated
Seshu K Gudlavalleti et al.
Journal of pharmaceutical and biomedical analysis, 107, 432-436 (2015-02-11)
The ability to accurately measure and report trace amounts of residual formaldehyde impurity in a vaccine product is not only critical in the product release but also a regulatory requirement. In many bacterial or viral vaccine manufacturing procedures, formaldehyde is
Vratislav Kostal et al.
Analytical and bioanalytical chemistry, 400(1), 213-222 (2011-02-18)
The level of carbonylation in skeletal muscle is a marker of oxidative damage associated with disease and aging. While immunofluorescence microscopy is an elegant method to identify carbonylation sites in muscle cross-sections, imaging analysis is manual, tedious, and time consuming
Jalaluddin M Ashraf et al.
PloS one, 10(2), e0116804-e0116804 (2015-02-18)
Advanced glycation end-products (AGEs) are heterogeneous group of compounds, known to be implicated in diabetic complications. One of the consequences of the Maillard reaction is attributed to the production of reactive intermediate products such as α-oxoaldehydes. 3-deoxyglucosone (3-DG), an α-oxoaldehyde
Opas Bunkoed et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 47(2), 167-175 (2012-01-17)
A simple and high collection efficiency sampling method was developed for the monitoring of carbonyl compounds, i.e., formaldehyde, acetaldehyde, benzaldehyde, acetone and butanone. The determination is based on the reaction of these compounds in a sensitive absorbing solution of 2,4-DNPH.
Ikuo Yamamiya et al.
Drug metabolism and disposition: the biological fate of chemicals, 38(8), 1267-1276 (2010-05-14)
Tegafur (FT) is a 5-fluorouracil (5-FU) prodrug that has been clinically used for various cancer chemotherapies. The following metabolites of FT were identified in patients: 5-FU, fluoro-beta-alanine, and gamma-butyrolactone (GBL) and its acidic form, gamma-hydroxybutyrate (GHB). GBL/GHB, which is probably
Laszlo Prokai et al.
Journal of chromatography. A, 1232, 281-287 (2012-02-22)
Carbonyl compounds are common byproducts of many metabolic processes. These volatile chemicals are usually derivatized before mass spectrometric analysis to enhance the sensitivity of their detections. The classically used reagent for this purpose is 2,4-dinitrophenylhydrazine (DNPH) that forms the corresponding
Shigehisa Uchiyama et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 879(17-18), 1282-1289 (2010-10-26)
Derivatization of carbonyl compounds with 2,4-dinitrophenylhydrazine (DNPH) is one of the most widely used analytical methods. In this article, we highlight recent advances using DNPH provided by our studies over past seven years. DNPH reacts with carbonyls to form corresponding
Jorge Gutiérrez et al.
Journal of experimental botany, 65(12), 3081-3095 (2014-04-12)
Light-grown Arabidopsis thaliana cell suspension culture (ACSC) were subjected to mild photooxidative damage with Rose Bengal (RB) with the aim of gaining a better understanding of singlet oxygen-mediated defence responses in plants. Additionally, ACSC were treated with H2O2 at concentrations
Seoungwoo Shin et al.
Molecules (Basel, Switzerland), 20(3), 3549-3564 (2015-02-24)
Glycation is an ageing reaction of naturally occurring sugars with dermal proteins, with clinical signs appearing in vivo around age 30, and increasing steadily/regularly with age. The suppleness of the dermis is affected by the formation of bridges between proteins
Sorabh Sharma et al.
Journal of molecular neuroscience : MN, 56(1), 1-11 (2014-11-14)
Metabolic syndrome is increasingly recognized for its effects on cognitive health. Recent studies have highlighted the role of histone deacetylases (HDACs) in metabolic syndrome and cognitive functions. The present study was designed to investigate the possible therapeutic role of a
Bianca Meyer et al.
Journal of agricultural and food chemistry, 60(29), 7306-7311 (2012-07-04)
During thermal milk processing, severe oxidation can occur, which alters the technological and physiological properties of the milk proteins. Due to differences in composition and physicochemical properties, it can be expected that the particular milk proteins are differently affected by
Shigehisa Uchiyama et al.
Journal of chromatography. A, 1217(26), 4383-4388 (2010-05-21)
A new method for the determination of acrolein and other carbonyls in cigarette smoke using a dual cartridge system has been developed. Each cartridge consists of reagent-impregnated silica particles. The first contains hydroquinone (HQ) for the inhibition of acrolein polymerization
Ya-Ping Xue et al.
Bioprocess and biosystems engineering, 35(9), 1515-1522 (2012-05-09)
To isolate enantioselective α-hydroxyacid dehydrogenases (α-HADHs), a high-throughput screening method was established. 2,4-Dinitrophenylhydrazine solution forms a red-brown complex with ketoacid produced during the α-HADH-mediated oxidation of α-hydroxyacid. The complex can be easily quantified by spectrophotometric measurement at 458 nm. The
S B Tejada
International journal of environmental analytical chemistry, 26(2), 167-185 (1986-01-01)
A procedure for coating in situ silica gel in prepacked cartridges with 2,4-dinitrophenylhydrazine (DNPH) acidified with hydrochloric acid is described. The coated cartridge was compared with a validated DNPH impinger method for sampling organic carbonyl compounds (aldehydes and ketones) in
Rebekka Wild et al.
Analytical and bioanalytical chemistry, 403(9), 2577-2581 (2012-05-15)
The determination of methylglyoxal (MG) concentrations in vivo is gaining increasing importance as high levels of MG are linked to various health impairments including complications of diabetes. In order to standardize the measurements of MG in body fluids, it is
Shigehisa Uchiyama et al.
Analytica chimica acta, 691(1-2), 119-124 (2011-04-05)
A new diffusive sampling method for the simultaneous determination of ozone and carbonyls in air has been developed. In this method, silica gel impregnated with a mixture of trans-1,2-bis(2-pyridyl)ethylene (2BPE) and 2,4-dinitrophenylhydrazine (DNPH) is used as the absorbent; further, a
Mohammad Rashid Khan et al.
Renal failure, 37(1), 136-143 (2014-09-19)
Vitamin E is the generic term for a group of tocopherols and tocotrienols (T3). Hyperlipidemia has been known to cause progressive chronic renal dysfunction (CRD). Several investigators have reported that T3 have hypolipidemic and nephroprotective activity against free radical-related diseases.
Abbas Afkhami et al.
Journal of hazardous materials, 181(1-3), 836-844 (2010-06-15)
2,4-Dinitrophenylhydrazine (DNPH) immobilized on sodium dodecyl sulfate coated nano-alumina was developed for the removal of metal cations Pb(II), Cd(II), Cr(III), Co(II), Ni(II) and Mn(II) from water samples. The research results displayed that adsorbent has the highest adsorption capacity for Pb(II)
Xiangying Guan et al.
Alcoholism, clinical and experimental research, 36(3), 398-405 (2011-09-08)
Acetaldehyde is produced during ethanol metabolism predominantly in the liver by alcohol dehydrogenase and rapidly eliminated by oxidation to acetate via aldehyde dehydrogenase. Assessment of circulating acetaldehyde levels in biological matrices is performed by headspace gas chromatography and reverse phase
Masumi Katane et al.
Biological & pharmaceutical bulletin, 38(2), 298-305 (2015-03-10)
D-Aspartate (D-Asp), a free D-amino acid found in mammals, plays crucial roles in the neuroendocrine, endocrine, and central nervous systems. Recent studies have implicated D-Asp in the pathophysiology of infertility and N-methyl-D-Asp receptor-related diseases. D-Asp oxidase (DDO), a degradative enzyme
Camila Carrião M Garcia et al.
Journal of the American Chemical Society, 133(24), 9140-9143 (2011-05-25)
Acetaldehyde is an environmentally widespread genotoxic aldehyde present in tobacco smoke, vehicle exhaust and several food products. Endogenously, acetaldehyde is produced by the metabolic oxidation of ethanol by hepatic NAD-dependent alcohol dehydrogenase and during threonine catabolism. The formation of DNA
Paola Manini et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 878(27), 2616-2622 (2010-03-09)
We present the application of a novel isotope dilution method, named Alternate Isotope-Coded Derivatization Assay (AIDA), to the quantitative analysis of hydrazone derivatives of malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE) in exhaled breath condensate (EBC) samples using liquid chromatography-tandem mass spectrometry.
Hui Xu et al.
Analytica chimica acta, 690(1), 86-93 (2011-03-19)
In this work, a polypropylene frit with porous network structure (20 μm pole size) was first utilized as the mould of polymer monolithic material, poly(methacrylic acid-co-ethylene glycol dimethacrylate) (MAA-co-EDMA) monolith was synthesized within channels and macropores of the frit. A
Md Nurul Islam et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 69, 55-62 (2014-04-10)
Vicenin 2, isolated from a traditionally used medicinal plant Artemisia capillaris, is a 6,8-di-C-glucoside of apigenin which has been previously reported to possess a wide variety of pharmacological activities including antioxidant, anti-inflammatory, anti-cancer, and hepatoprotective. However, there have not been
Opas Bunkoed et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 48(3), 263-272 (2012-12-19)
Formaldehyde was monitored in the workplace environment of an adhesive manufacturer producing formaldehyde and urea-formaldehyde resin using a cost-effective sol-gel-based sensor. The sensor was first evaluated by comparing its performance to the conventional 2,4-dinitrophynylhydrazine-devivatization method (2,4-DNPH) followed by high-performance liquid
Zhigang Wang et al.
Journal of pharmaceutical and biomedical analysis, 107, 1-6 (2015-01-06)
The metabolism of gentiopicroside in vivo was studied by LC/MS following 2,4-dinitrophenylhydrazine derivatization for the first time. The ionization efficiency of the major metabolites erythrocentaurin and gentiopicral were greatly enhanced by the new analytical method developed, and they were successfully
Aitor Carretero et al.
Analytical and bioanalytical chemistry, 406(22), 5465-5476 (2014-06-28)
Multiple analytical methods are required to comprehensively assess oxidative homeostasis and specific damage to macromolecules. Our aim was to develop a straightforward strategy for the fast assessment of global oxidative status and specific damage to DNA, proteins, and lipids. To
Virginia Carvalhais et al.
Applied microbiology and biotechnology, 99(6), 2751-2762 (2015-02-13)
Staphylococcus epidermidis is an important nosocomial bacterium among carriers of indwelling medical devices, since it has a strong ability to form biofilms. The presence of dormant bacteria within a biofilm is one of the factors that contribute to biofilm antibiotic
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