Showing 1-30 of 61 results for "39220"
Ming-Hua Liang et al.
Journal of the science of food and agriculture, 95(9), 1949-1955 (2014-09-11)
To decrease the methanol content of the sugar cane sprits, mutagenesis of ultraviolet (UV) coupled with diethyl sulfate (DES) was used to generate a mutant of Saccharomyces cerevisiae with lower methanol content. Meanwhile, the effects of the additions of pectinase...
Zeena S Pillai et al.
Chemistry, an Asian journal, 8(4), 771-777 (2013-01-25)
We have designed two novel dendrimers with cyclam cores with appended poly(amido amine) (PAMAM) dendrons, decorated at the periphery with four and eight dansyl chromophores, respectively. The photophysical properties of the dendrimers and their Nd(3+) complexes have been investigated. The...
Miguel López-Gómez et al.
Phytochemistry, 107, 32-41 (2014-09-16)
Polyamines (PAs) are low molecular weight aliphatic compounds that have been shown to be an important part of plant responses to salt stress. For that reason in this work we have investigated the involvement of PAs in the response to...
Juan C Marini
Rapid communications in mass spectrometry : RCM, 25(9), 1291-1296 (2011-04-15)
The enteral metabolisms of glutamine and citrulline are intertwined because, while glutamine is one of the main fuel sources for the enterocyte, citrulline is one of its products. It has been shown that the administration of (15)N-labeled glutamine results in...
Arisa Yamada et al.
Biomacromolecules, 16(8), 2356-2362 (2015-06-30)
We report the development of environmentally responsive fluorescent polymers. The reversible temperature-induced phase transition of copolymers composed of N-isopropylacrylamide and a fluorescent monomer based on the fluorescein (FL), coumarin (CO), rhodamine (RH), or dansyl (DA) skeleton was used as a...
Sarah A Goretta et al.
Bioorganic & medicinal chemistry, 20(13), 4012-4019 (2012-06-08)
Sphingomyelin (SM) and cholesterol form microdomains called lipid rafts in cellular membranes. To develop a versatile fluorescent lipid probe, chemical modifications to both the hydrophobic and hydrophilic portions of SM are essential. Few reports describing SM probes with a fluorophore...
Shaodong Jia et al.
Journal of chromatography. A, 1218(51), 9174-9182 (2011-11-15)
A novel liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (LC-Q-TOFMS) method was developed for the simultaneous determination of 23 amino acids and 7 biogenic amines in food samples. These analytes were pre-column derivatized with dansyl chloride and then separated...
Xingnan Li et al.
Steroids, 99(Pt A), 84-90 (2014-12-30)
Estrogen metabolites are important biomarkers to evaluate cancer risks and metabolic diseases. Due to their low physiological levels, a sensitive and accurate method is required, especially for the quantitation of unconjugated forms of endogenous steroids and their metabolites in humans....
Zhongmei Tang et al.
Analytical chemistry, 82(18), 7706-7712 (2010-08-28)
Chemical derivatization is useful for improving the ionization characteristics of poorly or nonionizable analytes in liquid chromatography-mass spectrometry (LC-MS). Dansyl chloride has been widely used as a derivatizing reagent for fluorescence detection and for facilitating the MS detection of phenols...
Tadeu Chaves de Figueiredo et al.
Talanta, 142, 240-245 (2015-05-25)
A quantitative and confirmatory high-performance liquid chromatography with ultraviolet detection (HPLC-UV) method for the determination of bioactive amines in the albumen and yolk of commercial eggs was developed, optimized and validated by analyte extraction with trichloroacetic acid and pre-column derivatization...
Yuyin Zhou et al.
Environmental science & technology, 49(12), 7218-7226 (2015-05-23)
The occurrence of bisphenol A (BPA), nonylphenol (NP), and their six chlorinated byproducts were investigated in 74 food contacting papers (FCPs) from China, the U.S.A., Japan, and Europe using a sensitive dansylation LC-MS/MS method. BPA (<LOQ-83 ng/g) and NP (<LOQ-5.4...
Giovanni Licari et al.
Xenobiotica; the fate of foreign compounds in biological systems, 45(1), 3-9 (2014-07-23)
1. Perhexiline, a chiral anti-anginal agent, may be useful to develop new cardiovascular therapies, despite its potential hepatotoxicity. 2. This study compared Dark Agouti (DA) and Sprague-Dawley (SD) rats, as models of perhexiline's metabolism and hepatotoxicity in humans. Rats (n...
Radia Bousoumah et al.
Analytical and bioanalytical chemistry, 407(29), 8713-8723 (2015-09-24)
Multi-residue methods permitting the high-throughput and affordable simultaneous determination of an extended range of endocrine disrupting chemicals (EDCs) with reduced time and cost of analysis is of prime interest in order to characterize a whole set of bioactive compounds. Such a...
DeQing Cao et al.
Drug and chemical toxicology, 38(1), 44-49 (2014-03-22)
A Type II pyrethroid pesticide β-cypermethrin is widely used in agriculture and domestic applications for pest control. However, the effect of β-cypermethrin on the glutamate neurotransmitter has not been well-documented. In the current study, mice were treated with 20, 40...
M Lisa Manier et al.
Journal of mass spectrometry : JMS, 49(8), 665-673 (2014-07-22)
Imaging mass spectrometry (IMS) studies increasingly focus on endogenous small molecular weight metabolites and consequently bring special analytical challenges. Since analytical tissue blanks do not exist for endogenous metabolites, careful consideration must be given to confirm molecular identity. Here, we...
Maria T Hultman et al.
Aquatic toxicology (Amsterdam, Netherlands), 159, 233-244 (2015-01-07)
Vitellogenin (Vtg) induction in primary fish hepatocytes has been proposed as an in vitro screening assay for ER agonists and antagonists, but has not yet been used extensively as a high-throughput screening tool due to poor reproducibility, sensitivity and overall...
Balaraman H Shankar et al.
The journal of physical chemistry. B, 115(45), 13292-13299 (2011-10-11)
Interaction of a few dansyl-naphthalimide conjugates 1a-e linked through polymethylene spacer groups with various metal ions was investigated through absorption, fluorescence, NMR, isothermal calorimetric (ITC), and laser flash photolysis techniques. The characteristic feature of these dyads is that they exhibit...
Ramakrishna Nirogi et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 913-914, 41-47 (2012-12-29)
A rapid and sensitive liquid chromatography tandem mass spectrometry method for simultaneous quantification of catecholamine neurotransmitters in microdialysates was developed. The catecholamine neurotransmitters dopamine (DA) and norepinephrine (NE) were pre-column derivatized with dansyl chloride and analyzed. A gradient elution method...
Antonis Myridakis et al.
Analytical and bioanalytical chemistry, 407(9), 2509-2518 (2015-02-04)
Phthalates, bisphenol A (BPA) and parabens (PBs), organic chemicals widely used in everyday products, are considered to be endocrine disruptors. We propose a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of seven phthalate metabolites, six PBs and BPA...
Audrey Roy-Lachapelle et al.
Analytical and bioanalytical chemistry, 407(18), 5487-5501 (2015-05-04)
A new analytical method was developed for the detection of alkaloid cyanotoxins in harmful algal blooms. The detection of the nonproteinogenic amino acid β-N-methylamino-L-alanine (BMAA) and two of its conformation isomers, 2,4-diaminobutyric acid (DAB) and N-(2-aminoethyl) glycine (AEG), as well...
E Bichon et al.
Rapid communications in mass spectrometry : RCM, 26(7), 819-827 (2012-03-01)
The control of forbidden anabolic practices in cattle in the European Union has become challenging since endogenous compounds such as estradiol derivatives can potentially be used as growth promoters. Due to the great difficulty in establishing a reference threshold value...
Hien P Nguyen et al.
Journal of pharmaceutical and biomedical analysis, 54(4), 830-837 (2010-12-15)
Estrogens are known to exhibit neuroprotective effects on the brain. Their importance in this regard and in others has been emphasized in many recent studies, which increases the need to develop reliable analytical methods for the measurement of estrogen hormones....
Xiaomei Zhuang et al.
Journal of pharmaceutical and biomedical analysis, 75, 18-24 (2013-01-15)
Psoralea corylifolia L. (Fabaceae) is a traditional Chinese medicine with many beneficial effects in medical therapies. Bakuchiol was the main active ingredient of Psoralea corylifolia L. In this study, a novel method of pre-column derivatization with dansyl chloride followed by...
Ricardo Souza Reis et al.
Journal of proteomics, 130, 170-179 (2015-10-06)
Somatic embryogenesis, an important biotechnological technique, has great potential for application in sugarcane breeding and micropropagation. Polyamines have been associated with the regulation of several physiological processes, including the acquisition of embryogenic competence and somatic embryogenesis. In this study, we...
Didier Blanot et al.
Chemical biology & drug design, 79(1), 2-8 (2011-08-06)
Muramyl peptides derived from bacterial peptidoglycan have long been known for their ability to trigger host innate immune responses, including inflammation and antimicrobial defense. Muramyl peptides have also been widely studied for their role as immune adjuvants. In mammals, the...
Jérémy Carlier et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 978-979, 70-77 (2014-12-23)
Hypoglycin A (HGA) is the toxic principle in ackee (Blighia sapida Koenig), a nutritious and readily available fruit which is a staple of the Jamaican working-class and rural population. The aril of the unripe fruit has high concentrations of HGA...
Tanumoy Mondol et al.
Photochemistry and photobiology, 88(2), 328-335 (2012-01-04)
In this contribution, we report studies on the interaction of an antituberculosis drug rifampicin (RF) in a macromolecular assembly of CTAB with an extrinsic fluorescent probe, dansyl chloride (DC). The absorption spectrum of the drug RF has been employed to...
Hua-Lin Cai et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 879(21), 1993-1999 (2011-05-31)
A pre-column dansylated ultra-performance liquid chromatography-electrospray ionization tandem mass spectrometry (UPLC-MS/MS) method for simultaneous determination of risperidone (RIP), 9-hydroxyrisperidone (9-OH-RIP), monoamine and amino acid neurotransmitters in human urine was developed with the aim of providing data on how neurotransmitters may...
Dirk Stegehake et al.
The Journal of biological chemistry, 290(29), 18090-18101 (2015-06-03)
Degradation of ornithine decarboxylase, the rate-limiting enzyme of polyamine biosynthesis, is promoted by the protein antizyme. Expression of antizyme is positively regulated by rising polyamine concentrations that induce a +1 translational frameshift required for production of the full-length protein. Antizyme...
Zeynep Aydoğmuş et al.
Journal of fluorescence, 22(2), 549-556 (2011-09-29)
A simple and sensitive method has been developed and validated for the determination of aliskiren (ALS) in its dosage forms and spiked plasma. The method was based on the reaction of the drug with dansyl chloride in the presence of...

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