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50809-U

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E Lesellier
Journal of chromatography. A, 1266, 34-42 (2012-11-03)
The recent introduction of new stationary phases for liquid chromatography based on superficially porous particles, called core-shell or fused-core, dramatically improved the separation performances through very high efficiency, due mainly to reduced eddy diffusion. However, few studies have evaluated the...
Han Young Eom et al.
Journal of chromatography. A, 1217(26), 4347-4354 (2010-05-11)
Saikosaponins are triterpene saponins derived from the roots of Bupleurum falcatum L. (Umbelliferae), which has been traditionally used to treat fever, inflammation, liver diseases, and nephritis. It is difficult to analyze saikosaponins using HPLC-UV due to the lack of chromophores....
Tingting Wang et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 912, 93-97 (2012-12-25)
A high-performance liquid chromatography-tandem mass spectrometric (LC-MS/MS) method for the determination of paclitaxel in intracellular compartments using docetaxel as internal standard (IS) has been developed and validated. A549 cancer cells (10(6)) were incubated with paclitaxel (2ng/mL) for up to 4h...
Silvia Jakabová et al.
Journal of chromatography. A, 1232, 295-301 (2012-03-07)
Hyoscyamine (atropine) and scopolamine are the predominant tropane alkaloids in the Datura genus, occurring in all plant organs. The assessment of the alkaloid content of various plant parts is essential from the viewpoint of medical use, but also as a...
Rita Upreti et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 930, 121-128 (2013-06-08)
A simple, sensitive and robust method to extract tamsulosin from human serum, and quantify by liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed and validated and is applicable as a measure of compliance in clinical research. Tamsulosin was extracted from human...
Ludmila Matysova et al.
Journal of analytical methods in chemistry, 2015, 806736-806736 (2015-04-17)
A selective and sensitive gradient HPLC-UV method for quantification of sotalol hydrochloride and potassium sorbate in five types of oral liquid preparations was developed and fully validated. The separation of an active substance sotalol hydrochloride, potassium sorbate (antimicrobial agent), and...
Monika A Olszewska
Journal of separation science, 35(17), 2174-2183 (2012-07-19)
An HPLC method of high resolution has been developed and validated for the simultaneous determination of ten prominent flavonoid aglycones in plant materials using a fused-core C18-silica column (Ascentis® Express, 4.6 mm × 150 mm, 2.7 μm). The separation was...
Aljona Saleh et al.
Journal of pharmaceutical and biomedical analysis, 104, 1-11 (2014-12-03)
MTH1 is a protein that is required for cancer cell survival and is overexpressed in cancer cells. TH588 and TH287 are two new compounds that inhibit the MTH1 protein. The inhibitors were tested in pharmacokinetic studies on mice. A bioanalytical...
Pavel Jandera et al.
Journal of separation science, 33(10), 1382-1397 (2010-03-24)
Gradient elution provides significant improvement in peak capacity with respect to isocratic conditions. In the second dimension, gradients are limited to a short-time period available for separation. Various types of second-dimension gradients in comprehensive LC x LC are compared: (i)...
Petra Drábková et al.
Biomedical chromatography : BMC, 31(2) (2016-07-28)
A method for the determination of selected amino acids in culture medium using HPLC with fluorescence detection is described. Twenty hours after intra-cytoplasmic sperm injection, one randomly selected zygote was transferred to the culture medium. After incubation (72 h after fertilization)...
Dalibor Šatínský et al.
Talanta, 142, 124-130 (2015-05-25)
A new on-line SPE-HPLC method using fused-core columns for on-line solid phase extraction and large volume sample injection for increasing the sensitivity of detection was developed for the determination of insecticides fenoxycarb and cis-, trans-permethrin in surface waters. The separation...
Imran Ali et al.
Journal of separation science, 35(23), 3235-3249 (2012-11-28)
New generation columns, i.e. packed with superficially porous silica particles are available as trade names with following manufacturers: Halo, Ascentis Express, Proshell 120, Kinetex, Accucore, Sunshell, and Nucleoshell. These provide ultra-fast HPLC separations for a variety of compounds with moderate...
Meiyun Shi et al.
Journal of separation science, 38(8), 1351-1357 (2015-01-30)
The pentapeptide thymopentin (Arg-Lys-Asp-Val-Tyr, RKDVY) corresponds to amino acids 32-36 of the 49 amino acid immunomodulatory polypeptide, thymopoietin, whose biological activity is partially reproduced. Thymopentin is widely used in the clinic and represents a promising target for drug design but...
Petr Chocholouš et al.
Talanta, 103, 221-227 (2012-12-04)
Currently, for Sequential Injection Chromatography (SIC), only reversed phase C18 columns have been used for chromatographic separations. This article presents the first use of three different stationary phases: three core-shell particle-packed reversed phase columns in flow systems. The aim of...
Peilin Yang et al.
Journal of separation science, 34(21), 2975-2982 (2011-09-22)
Commercial C(18) columns packed with superficially porous particles of different sizes and shell thicknesses (Ascentis Express, Kinetex, and Poroshell 120) or sub-2-μm totally porous particles (Acquity BEH) were systematically compared using a small molecule mixture and a complex natural product...
Federica Pellati et al.
Journal of pharmaceutical and biomedical analysis, 81-82, 126-132 (2013-05-07)
A closed-vessel microwave-assisted extraction (MAE) technique was optimized for the first time for the extraction of polyphenols from raw propolis. The results obtained by means of response surface experimental design methodology showed that the best global response was reached when...
Olivier Heudi et al.
Analytical and bioanalytical chemistry, 406(28), 7389-7396 (2014-09-27)
Ceritinib is a highly selective inhibitor of an important cancer target, anaplastic lymphoma kinase (ALK). Because it is an investigational compound, there is a need to develop a robust and reliable analytical method for its quantitative determination in human plasma....
Heena et al.
Journal of chromatographic science, 53(5), 800-806 (2014-10-18)
This study represents a new analytical high-performance liquid chromatography-fluorescence detector method for the determination of Al(III) as Al(III) complex with 8-hydroxyquinoline-5-sulfonic acid in a tap water sample and a coke sample. A micellar liquid chromatographic method is proposed for the...
Jakub Fibigr et al.
Journal of pharmaceutical and biomedical analysis, 120, 112-119 (2016-01-01)
A new high-performance liquid chromatography method using fused-core column for fast separation of resveratrol and polydatin has been developed and used for quality control of nutraceuticals with resveratrol and polydatin content. Retention characteristics (log k) were studied under different conditions...
Petra Šilarová et al.
Food chemistry, 237, 471-480 (2017-08-03)
The degradation of catechins and other phenolics in green tea infusions were monitored using fast HPLC/MS separation. The final separation was performed within 2.5min using Ascentis Express C18 column (50mm×2.1mm i.d.) packed with 2μm porous shell particles. Degradation was studied...
Min Kyung Kim et al.
Journal of chromatography. A, 1218(37), 6319-6330 (2011-08-03)
Methods using high performance liquid chromatography with diode array detection (HPLC-DAD) and tandem mass spectrometry (HPLC-MS/MS) were developed and validated for the simultaneous determination of 5 chromones and 6 coumarins: prim-O-glucosylcimifugin (1), cimifugin (2), nodakenin (3), 4'-O-β-d-glucosyl-5-O-methylvisamminol (4), sec-O-glucosylhamaudol (5)...
Francesco Pio Prencipe et al.
Journal of chromatography. A, 1349, 50-59 (2014-05-27)
The study was aimed at developing a new analytical method for the metabolite fingerprinting of bioactive compounds in Humulus lupulus L. (hop), together with a simple extraction procedure. Different extraction techniques, including maceration, heat reflux extraction (HRE), ultrasound-assisted extraction (UAE)...
Graham Lawson et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 897, 72-79 (2012-05-04)
The use of blood spot collection cards was investigated as a means of obtaining small volume samples for the quantification of therapeutic drugs for assessing medication adherence. A liquid chromatography-high resolution TOF mass spectrometry (LC-HRMS) method, based on the measurement...
Jaehyun Lee et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 879(32), 3887-3895 (2011-11-23)
A simple, rapid and robust high performance liquid chromatography-evaporative light scattering detection (HPLC-ELSD) method was established for the species discrimination and quality evaluation of Radix Bupleuri through the simultaneous determination of ten saikosaponins, namely saikosaponin-a, -b(1), -b(2), -b(3), -b(4), -c...
Massimo Tacchini et al.
Journal of pharmaceutical and biomedical analysis, 146, 1-6 (2017-08-26)
The genus Echinacea (Asteraceae) includes species traditionally used in phytotherapy. Among them, Echinacea pallida (Nutt.) Nutt. root extracts are characterized by a representative antiproliferative activity, due to the presence of acetylenic compounds. In this study, supercritical fluid extraction (SFE) was...
Jonathan Byrne et al.
Journal of pharmaceutical and biomedical analysis, 96, 111-117 (2014-04-16)
A novel stability-indicating reversed phase high performance liquid chromatographic (RP-HPLC) method for the simultaneous assay of betamethasone-17-valerate, fusidic acid and potassium sorbate as well as methyl- and propylparaben in a topical cream preparation has been developed. A 100mm×3.0mm ID. Ascentis...
Pankaj Partani et al.
Journal of chromatographic science, 54(8), 1385-1396 (2016-05-27)
A liquid chromatography-tandem mass spectrometry method was developed and validated for the simultaneous determination of simvastatin (SV) and simvastatin acid (SVA) in human plasma. To improve assay sensitivity and achieve simultaneous analysis, SVA monitored in (-)ESI (electrospray ionization) mode within...
Ivona Lhotská et al.
Analytical and bioanalytical chemistry, 408(12), 3319-3329 (2016-03-20)
A new fast and sensitive method based on on-line solid-phase extraction on a fused-core precolumn coupled to liquid chromatography with fluorescence detection has been developed for ochratoxin A (OTA) and citrinin (CIT) determination in lager beer samples. Direct injection of...
Judy Stone
Methods in molecular biology (Clifton, N.J.), 1378, 301-320 (2015-11-26)
Serum from bar-coded tubes, and then internal standard, are pipetted to 96-well plates with an 8-channel automated liquid handler (ALH). The first precipitation reagent (methanol:ZnSO4) is added and mixed with the 8-channel ALH. A second protein precipitating agent, 1 %...
Babu Rao Chandu et al.
SpringerPlus, 2(1), 194-194 (2013-06-07)
A bioequivalence study was proved of generic Febuxostat 80 mg tablets (T) in healthy volunteers.For this purpose, Authors developed a simple, sensitive, selective, rapid, rugged and reproducible liquid chromatography-tandem mass spectrometry method for the quantification of Febuxostat (FB) in human...
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