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Junjie Yao et al.
NeuroImage, 64, 257-266 (2012-09-04)
We have demonstrated the feasibility of imaging mouse brain metabolism using photoacoustic computed tomography (PACT), a fast, noninvasive and functional imaging modality with optical contrast and acoustic resolution. Brain responses to forepaw stimulations were imaged transdermally and transcranially. 2-NBDG, which...
Yaroslav V Faletrov et al.
The Journal of steroid biochemistry and molecular biology, 134, 59-66 (2012-11-06)
Docking simulations and experimental data indicate that 22-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino)-23,24-bisnor-5-cholen-3β-ol (22-NBD-cholesterol), a common fluorescent sterol analog, binds into active sites of bovine cytochrome P450scc and microbial cholesterol dehydrogenases (CHDHs) and then undergoes regiospecific oxidations by these enzymes. The P450scc-dependent system was established...
Jasmina Zivanovic et al.
Cell metabolism, 30(6), 1152-1170 (2019-11-19)
Life on Earth emerged in a hydrogen sulfide (H2S)-rich environment eons ago and with it protein persulfidation mediated by H2S evolved as a signaling mechanism. Protein persulfidation (S-sulfhydration) is a post-translational modification of reactive cysteine residues, which modulate protein structure...
Gholamreza Bahrami et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 850(1-2), 400-404 (2007-01-02)
A new, sensitive and simple high-performance liquid chromatographic method for analysis of topiramate, an antiepileptic agent, using 4-chloro-7-nitrobenzofurazan as pre-column derivatization agent is described. Following liquid-liquid extraction of topiramate and an internal standard (amlodipine) from human serum, derivatization of the...
Xiu Kong et al.
Journal of chromatography. A, 1364, 198-203 (2014-09-23)
A non-aqueous reversed-phase high-performance liquid chromatographic (HPLC) method has been developed to separate a light stabilizer Chimassorb 944 into individual oligomers, which are further identified using pre-column fluorescent derivatization and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). Consistent with previous studies...
Lina F Bernal-Perez et al.
Analytical biochemistry, 428(1), 13-15 (2012-06-09)
A fluorogenic derivatization method was developed to distinguish the protein N-terminal acetylation status. The unacetylated protein selectively reacted with 4-chloro-7-nitrobenzofurazan (NBD-Cl) at neutral pH to provide high fluorescence. In contrast, the protein with N-terminal acetylation was essentially nonfluorescent under the...
Abhinav Kanwal et al.
Analytical biochemistry, 429(1), 70-75 (2012-07-17)
Sodium-dependent glucose cotransporters (SGLT1 and SGLT2), which have a key role in the absorption of glucose in the kidney and/or gastrointestinal tract, have been proposed as a novel therapeutic strategy for diabetes and cardiomyopathy. Here we developed a simple cell-based...
Pablo Garrido et al.
Endocrinology, 154(6), 1979-1989 (2013-04-03)
The relationship between estrogen and some types of breast cancer has been clearly established. However, although several studies have demonstrated the relationship between estrogen and glucose uptake via phosphatidylinositol 3-kinase (PI3K)/Akt in other tissues, not too much is known about...
Zhen Luo et al.
Journal of biomedical optics, 17(10), 106006-106006 (2012-12-12)
Predicting the response of individual patients to cytotoxic chemotherapy drugs is critical for developing individualized therapies. With this motivation, an optical molecular imaging approach was developed to detect cisplatin induced changes in the uptake and intracellular retention of choline. Intracellular...
Angel Josabad Alonso-Castro et al.
Endocrinology, 153(11), 5222-5230 (2012-09-06)
Isoorientin (ISO) is a plant C-glycosylflavonoid with purported antidiabetic effects but unexplored mechanisms of action. To gain insight into its antidiabetic mechanisms, we assayed nontoxic ISO concentrations on the 2-(N-(7-nitrobenz-2-oxa-1, 3-diazol-4-yl) amino)-2-deoxy-d-glucose (2-NBDG) uptake by murine 3T3-F442A and human sc...
Yasuhiko Higashi et al.
Journal of cosmetic science, 63(3), 205-212 (2012-12-01)
Various methods for the determination of kojic acid (KA), a skin-whitening agent, have been reported by high-performance liquid chromatography (HPLC). In this study, the concentration of KA in a skin-whitening cosmetic was analyzed by HPLC with ultraviolet detection (380 nm)...
Marco Filice et al.
Organic & biomolecular chemistry, 9(15), 5535-5540 (2011-06-23)
Lipase B from Candida antarctica (CAL-B) has been site-directedly modified by the introduction of a trans,trans-hexadiene moiety onto lipase molecules, identified by MALDI-TOF. This modification on CAL-B permitted its immobilization on Q-Sepharose supports in excellent yields (>95%) when native lipase...
Gholamreza Bahrami et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 857(2), 322-326 (2007-08-21)
A sensitive and rapid high-performance liquid chromatographic method for the analysis of fluvoxamine, a selective serotonin reuptake inhibitor in human serum, is described using 4-chloro-7-nitrobenzofurazan as pre-column derivatization agent. The drug and an internal standard (fluoxetine) were extracted from 0.25...
Parallel dip-pen nanolithography using spore- and colloid-terminated cantilevers.
Marcus A Kramer et al.
Small (Weinheim an der Bergstrasse, Germany), 8(24), 3791-3794 (2012-08-18)
Brad Chazotte
Cold Spring Harbor protocols, 2012(8), doi:10-doi:10 (2012-08-03)
The Golgi may be considered a principal organizer of macromolecular traffic in the cell because many molecules, such as secreted proteins, glycoproteins, glycolipids, and plasma membrane glycoproteins, pass through the Golgi during their maturation. The fluorescent probes used to tag...
4-Chloro-7-nitrobenzofurazan as a Diels-Alder reagent. A facile access to highly functionalized naphthofurazans.
Vichard D, et al.
Tetrahedron Letters, 42(43), 7571-7574 (2001)
Pavel Ostašov et al.
Chemistry and physics of lipids, 167-168, 62-69 (2013-03-08)
HEK293 cells stably expressing δ-opioid receptor were labeled first with fluorescent analog of cholesterol, 22-NBD-cholesterol, exposed to cholesterol-depleting agent β-cyclodextrin (β-CDX) and analyzed by fluorescence lifetime imaging microscopy (FLIM). In accordance with chemical analysis of cholesterol level, the total cellular...
Joe Forth et al.
Langmuir : the ACS journal of surfaces and colloids, 31(34), 9312-9324 (2015-08-12)
We study the films formed by tetradecylamine (TDA) at the water-dodecane interface in the presence of hydrogen phosphate ions. Using Fourier transform infrared spectroscopy (FTIR), interfacial shear rheology, confocal fluorescence microscopy, cryo-scanning electron microscopy (cryo-SEM), and small-angle neutron scattering (SANS)...
Xiangtang Li et al.
Journal of chromatography. A, 1285, 159-164 (2013-03-12)
Integration of a pressure-driven make-up flow (MUF) into a microchip electrophoresis (MCE) platform in order to facilitate its coupling with electrospray ionization-mass spectrometric detection (ESI-MS) is described. In the glass/PDMS hybrid microchip, a MUF channel was made to intersect with...
P A T Martins et al.
Biochimica et biophysica acta, 1778(5), 1308-1315 (2008-03-25)
The bovine milk lipocalin, beta-Lactoglobulin (beta-LG), has been associated with the binding and transport of small hydrophobic and amphiphilic compounds, whereby it is proposed to increase their bioavailability. We have studied the binding of the fluorescent phospholipid-derivative, NBD-didecanoylphosphatidylethanolamine (NBD-diC10PE) to...
Molecular structure, vibrational, UV and NBO analysis of 4-chloro-7-nitrobenzofurazan by DFT calculations.
Kurt M, et al.
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, 79(5), 1162-1170 (2011)
Rolffy Ortiz-Andrade et al.
Journal of ethnopharmacology, 143(2), 455-462 (2012-07-24)
Justicia spicigera is a plant species used for the Teenak (Huesteca Potosina) and Mayan (Yucatan peninsula) indigenous for the empirical treatment of diabetes, infections and as stimulant. To evaluate the cytotoxicity, antioxidant and antidiabetic properties of J. spicigera. The effects...
Hiroyuki Nakao et al.
Biochimica et biophysica acta, 1848(1 Pt A), 145-150 (2014-10-15)
KcsA is a pH-dependent potassium channel that is activated at acidic pH. The channel undergoes global conformational changes upon activation. We hypothesized that the open-close conformational changes of the transmem brane region could promote the flip-flop of phosphoiipids. Based on...
Kelsi M Sandoz et al.
Antimicrobial agents and chemotherapy, 56(8), 4296-4302 (2012-05-31)
A novel and quantitative high-throughput screening approach was explored as a tool for the identification of novel compounds that inhibit chlamydial growth in mammalian cells. The assay is based on accumulation of a fluorescent marker by intracellular chlamydiae. Its utility...
Lucy J Martínez-Guerrero et al.
The Journal of pharmacology and experimental therapeutics, 346(3), 495-503 (2013-06-21)
The multidrug and toxin extruders 1- and 2-K (MATE1 and MATE2-K) are expressed in the luminal membrane of renal proximal tubule cells and provide the active step in the secretion of molecules that carry a net positive charge at physiologic...
Lili Guo et al.
The Journal of endocrinology, 223(3), 217-225 (2014-09-23)
Alarin, a regulatory peptide, belongs to the galanin family and plays the same regulatory roles as galanin in orexigenic activity and energy metabolism. Our previous studies had found that galanin might facilitate insulin sensitivity via activation of its central receptors....
El-Hay Soad S Abd et al.
Journal of AOAC International, 96(5), 968-975 (2013-11-29)
New, sensitive, and selective spectrophotometric and spectrofluorometric methods have been developed for determination of clemastine hydrogen fumarate (Clem), loratadine (Lor), losartan potassium (Los), and ramipril (Ram) in both pure form and pharmaceutical formulations using 4-chloro-7-nitrobenzofurazan (NBD-CI), which is a highly...
Rob van Zwieten et al.
Biochimica et biophysica acta, 1821(12), 1493-1500 (2012-09-11)
Maintenance of the asymmetric distribution of phospholipids across the plasma membrane is a prerequisite for the survival of erythrocytes. Various stimuli have been shown to induce scrambling of phospholipids and thereby exposure of phosphatidylserine (PS). In two types of patients...
Emmanuel C Gorospe et al.
Gastrointestinal endoscopy, 76(5), 933-938 (2012-09-18)
There are currently 2 existing confocal laser endomicroscopy (CLE) platforms: probe-based CLE (pCLE) and endoscope-based CLE (eCLE) systems, each with its own criteria for identifying dysplasia in Barrett's esophagus (BE). The diagnostic performance of these 2 systems has not been...
Yasuhiko Higashi et al.
Journal of cosmetic science, 64(5), 381-389 (2013-10-22)
Hinokitiol, a potent, broad-spectrum antibacterial agent, is a component of various personal care products. In this study, the concentration of hinokitiol in skin lotion was analyzed by means of high-performance liquid chromatography-ultraviolet detection (380 nm) after precolumn derivatization with 4-fluoro-7-nitro-2,1...
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