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Predrag Jovanovic et al.
Enzyme and microbial technology, 60, 16-23 (2014-05-20)
Chemoselective reduction of activated carbon-carbon double bond in conjugated nitroalkenes was achieved using Escherichia coli BL21(DE3) whole cells. Nine different substrates have been used furnishing the reduced products in moderate to good yields. 1-Nitro-4-phenyl-1,3-butadiene and (2-nitro-1-propenyl)benzene were successfully biotransformed with
Hui Zhang et al.
Environmental science and pollution research international, 21(16), 9939-9947 (2014-05-16)
An efficient pretreatment and analytical method was developed to investigate the occurrence and fate of four free estrogens (estrone (E1), 17β-estradiol (17β-E2), estriol (E3), and 17α-ethinylestradiol (EE2)), four conjugated estrogens (estrone-3-sulfate sodium salt (E1-3S), 17β-estradiol-3-sulfate sodium salt (E2-3S), estrone-3-glucuronide sodium
Paula Florian et al.
Biochemistry and cell biology = Biochimie et biologie cellulaire, 90(3), 449-455 (2012-03-03)
Different cell types have been reported to internalize lactoferrin (Lf) by specific or nonspecific receptors. Our studies focused on the endocytic pathway of human Lf in macrophage-like THP-1 cells. Lactoferrin was found to be internalized by THP-1 cells differentiated with
Younis A Salmean et al.
Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation, 25(3), 316-320 (2014-12-03)
To determine the effects of supplemental fiber on plasma p-cresol, stool frequency, and quality of life (QoL) in chronic kidney disease (CKD) patients. In a 12-week single-blind study, participants were provided with control muffins and supplements (5.5 g sucrose/day) for 2 weeks
Matthias Onghena et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 31(12), 2090-2102 (2014-11-20)
In 2011, the European Union prohibited the production of polycarbonate (PC) baby bottles due to the toxic effects of the PC monomer bisphenol-A. Therefore, baby bottles made of alternative materials, e.g. polypropylene (PP) or polyethersulphone (PES), are currently marketed. The
Zareen S Khan et al.
Journal of chromatography. A, 1418, 228-232 (2015-10-04)
Public exposure to pesticide residues through the main/side-stream smoke of tobacco (Nicotiana tabacum L.) is an international concern. This article reports optimization and validation of large-scale multiresidue analysis methods involving low pressure and traditional gas chromatography tandem mass spectrometry in
Stuart J Khan et al.
Chirality, 26(11), 739-746 (2014-12-17)
Ibuprofen and naproxen are commonly used members of a class of pharmaceuticals known as 2-arylpropionic acids (2-APAs). Both are chiral chemicals and can exist as either of two (R)- and (S)-enantiomers. Enantioselective analyses of effluents from municipal wastewater treatment plants
Man-Jeong Paik et al.
Sleep & breathing = Schlaf & Atmung, 18(3), 517-523 (2014-01-10)
The apnea-hypopnea index (AHI) is closely related with the severity of daytime sleepiness, but excessive daytime sleepiness (EDS) is not presented on all patients with obstructive sleep apnea (OSA). It is unclear why daytime sleepiness is not always present in
M Cooke et al.
Archives of oral biology, 48(4), 323-327 (2003-03-29)
The concentrations of putrescine, cadaverine, indole and skatole were determined in the saliva of healthy human volunteers upon waking and at time points during the day. Putrescine was found to be the most abundant of the amines studied, followed by
Franziska Janusch et al.
Environmental toxicology and pharmacology, 38(3), 792-799 (2014-10-13)
The application of antibiotics including fluoroquinolones to farming animals is widespread and may lead to the development of antibiotic resistance and other environmental effects. To calculate environmental loads and for a proper risk assessment it is necessary to determine the
Dilek Battal et al.
Therapeutic drug monitoring, 37(6), 805-811 (2015-05-21)
Mescaline, the primary psychoactive chemical in peyote cactus, has been consumed for thousands of years in ancient religious ceremonies. The US military wanted to determine if mescaline intake was a problem for personnel readiness. Twenty thousand seventeen urine specimens negative
Chang Li et al.
Journal of agricultural and food chemistry, 63(44), 9850-9854 (2015-10-20)
The capacities of six antioxidants to inhibit the formation of 3-monochloropropane-1,2 diol (3-MCPD) esters were examined in this study. Inhibitory capacities of the antioxidants were investigated both in chemical models containing the precursors (tripalmitoyl glycerol, 1,2-dipalmitoyl-sn-glycerol, monopalmitoyl glycerol, and sodium
Dae J Park et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 962, 147-152 (2014-06-14)
New tandem mass spectrometric method coupled with liquid chromatography (LC-MS/MS) has been developed to determine the total concentration of camptothecin derivatives (irinotecan and SN-38) regardless of inter-conversion phenomenon between carboxylate and lactone forms. At first, all sample solutions were acidified
G A van den Berg et al.
Clinical chemistry, 32(10), 1930-1937 (1986-10-01)
A capillary gas-chromatographic method with nitrogen-phosphorus detection is used to determine simultaneously urinary 1,3-diaminopropane, monoacetyl-1,3-diaminopropane, putrescine, monoacetylputrescine, cadaverine, monoacetylcadaverine, spermidine, N1-acetylspermidine, N beta-acetylspermidine, spermine, N1-acetylspermine, isoputreanine, N-(3-aminopropyl)pyrrolidin-2-one, and putreanine. The compounds are isolated by adsorption onto silica and converted into
Shupeng Yang et al.
Analytical and bioanalytical chemistry, 407(13), 3579-3589 (2015-03-17)
Ochratoxin A (OTA) is a mycotoxin that frequently contaminates a wide variety of food and feedstuffs. The metabolism of OTA greatly affects fate and toxicity in humans and animals, because of its possible carcinogenic character (International Agency for Research on
Laura Trabalón et al.
Environmental research, 143(Pt B), 116-122 (2015-04-29)
The occurrence of ten synthetic musks in samples of 10 widely consumed fish and shellfish species from Tarragona (Catalonia, Spain) was determined. The most used nitro and polycyclic musks, as well as a well-known transformation product in tissues, were analyzed.
Cunliu Zhou et al.
Pakistan journal of pharmaceutical sciences, 26(5), 1023-1025 (2013-09-17)
Berberine and palmatine are two of the main bioactive components in Huangbai, a major Chinese medicinal herb. The current methods to extract these compounds usually involving the usage of inorganic acid and base, are not only complex and time-consuming, but
Chamila Nimalaratne et al.
Journal of agricultural and food chemistry, 63(11), 2956-2962 (2015-03-10)
Among dietary carotenoids, lutein and zeaxanthin are known to protect against age-related macular degeneration, a leading cause of irreversible vision loss in the elderly. Egg yolk is rich in lutein and zeaxanthin, however, the effect of cooking and gastrointestinal digestion
D S Raj et al.
Blood purification, 18(2), 97-102 (2000-06-06)
The purpose of this study was to examine the effect of nocturnal hemodialysis (NHD) on serum amino acid (AA) profile. In a cross-over trial, we studied the AA profile in 11 patients who were switched from conventional hemodialysis to NHD.
Inés Racamonde et al.
Analytica chimica acta, 865, 22-30 (2015-03-04)
Fabric phase sorptive extraction (FPSE) is a new, yet very promising member of the sorbent-based sorptive microextraction family. It has simultaneously improved both the extraction sensitivity and the speed of the extraction by incorporating high volume of sol-gel hybrid inorganic-organic
L Yañez et al.
Journal of food science, 77(8), T143-T150 (2012-07-20)
In this work, the presence of biogenic amines (BAs) was correlated with the type of wine grape culture (traditional or organic) and their concentration in the different stages of winemaking (must, alcoholic fermentation [AF] and malolactic fermentation [MLF]). The formation
S Kubota et al.
Cancer research, 43(5), 2363-2367 (1983-05-01)
We developed a new simple enzymatic assay method for measuring urinary polyamines (total amount of putrescine, spermidine, and cadaverine), using an acylpolyamine amidohydrolase and a putrescine oxidase. First conjugated polyamines (putrescine, spermidine, and cadaverine) in urine were hydrolyzed by incubation
Christine App et al.
Analytical biochemistry, 456, 14-21 (2014-04-16)
A new photoactivatable trifunctional cross-linker, cBED (cadaverine-2-[6-(biotinamido)-2-(p-azidobenzamido) hexanoamido]ethyl-1,3'-dithiopropionate), was synthesized by chemical conversion of sulfo-SBED (sulfosuccinimidyl-2-[6-(biotinamido)-2-(p-azidobenzamido) hexanoamido]ethyl-1,3'-dithiopropionate) with cadaverine. This cross-linker was purified by reversed-phase high-performance liquid chromatography (RP-HPLC) and characterized using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) analysis. cBED is
Kenji Uehara et al.
Applied and environmental microbiology, 81(1), 453-460 (2014-11-02)
4-Hydroxy-2 (or 5)-ethyl-5 (or 2)-methyl-3(2H)-furanone (HEMF) is an important flavor compound that contributes to the sensory properties of many natural products, particularly soy sauce and soybean paste. The compound exhibits a caramel-like aroma and several important physiological activities, such as
Steven Pham et al.
The Journal of steroid biochemistry and molecular biology, 144 Pt B, 436-444 (2014-09-10)
Castration resistant prostate cancer (CRPC) is often lethal and inevitably develops after androgen ablation therapy. However, in the majority of cases it remains androgen dependent. CRPC tumors have the ability to synthesize their own androgens from cholesterol by engaging in
Sang Jin Kim et al.
ChemSusChem, 8(22), 3783-3792 (2015-10-21)
Herein, we report a high performance polymer membrane with simultaneously large improvements in the CO2 permeability and CO2/N2 selectivity. These improvements are obtained by incorporation of a multi-functional amphiphilic comb copolymer micelle, that is, poly(dimethylsiloxane)-g-poly(oxyethylene methacrylate) (PDMS-g-POEM), into a poly(amide-b-ethylene
Barbara Laddomada et al.
International journal of molecular sciences, 16(2), 3512-3527 (2015-02-07)
In this study, the quali-quantitative composition of hydrophilic (phenolic acids) and lipophilic (isoprenoids) extracts from whole-meal flour of five elite Italian durum wheat cultivars was determined. Significant differences in the content of bioactive compounds were observed among the wheat extracts
S Umair et al.
Experimental parasitology, 131(1), 101-106 (2012-03-31)
Catabolism of lysine through the pipecolate, saccharopine and cadaverine pathways has been investigated in L3 and adult Haemonchus contortus and Teladorsagia circumcincta. Both enzymes of the saccharopine pathway (lysine ketoglutarate reductase (LKR) and saccharopine dehydrogenase (SDH)) were active in L3
John Suberu et al.
Journal of pharmaceutical and biomedical analysis, 117, 522-531 (2015-10-18)
An improved liquid chromatography-tandem mass spectrometry (LC-MS/MS) protocol for rapid analysis of co-metabolites of A. annua in raw extracts was developed and extensively characterized. The new method was used to analyse metabolic profiles of 13 varieties of A. annua from
Hannelore Rücker et al.
Organic & biomolecular chemistry, 13(10), 3040-3047 (2015-01-27)
Inflammatory signaling pathways orchestrate the cellular response to infection and injury. These pathways are known to be modulated by compounds that alkylate cysteinyl thiols. One class of phytochemicals with strong thiol alkylating activity is the chalcones. In this study we
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