Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (J Chrom B)

Publisher: Elsevier

Journal description

The Journal of Chromatography B. addresses advancements in and applications of analytical methodologies related to drugs, other pharmacologically active compounds, metabolites, as well as to bio-polymers such as proteins and nucleic acids. The areas considered include: clinical analysis, therapeutic drug monitoring, pharmaceutical analysis and novel approaches to sample preparation in bioanalysis; the qualitative and quantitative analysis of proteins, peptides and their post-translational modifications as well as nucleic acids; the screening and profiling of body fluids and tissues related to monitoring the level of active substances, including metabolites, biomarkers and toxicants; the comparative analysis of biological systems and proteomics and genomics including novel ways of data handling and interpretation; analytical techniques covered include the various facets of chromatography, electrophoresis and related methods, including mass spectrometry and affinity-based methodologies.

Current impact factor: 2.73

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 2.729
2013 Impact Factor 2.694
2012 Impact Factor 2.487
2011 Impact Factor 2.888
2010 Impact Factor 2.971
2009 Impact Factor 2.777
2008 Impact Factor 2.5
2007 Impact Factor 2.935
2006 Impact Factor 2.647
2005 Impact Factor 2.391
2004 Impact Factor 2.176
2003 Impact Factor 2.085
2002 Impact Factor 1.913
1996 Impact Factor 1.341
1995 Impact Factor 1.255
1994 Impact Factor 1.209

Impact factor over time

Impact factor
Year

Additional details

5-year impact 2.85
Cited half-life 7.80
Immediacy index 0.46
Eigenfactor 0.03
Article influence 0.67
Website Journal of Chromatography B website
ISSN 1873-376X

Publisher details

Elsevier

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Authors pre-print on any website, including arXiv and RePEC
    • Author's post-print on author's personal website immediately
    • Author's post-print on open access repository after an embargo period of between 12 months and 48 months
    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months
    • Author's post-print may be used to update arXiv and RepEC
    • Publisher's version/PDF cannot be used
    • Must link to publisher version with DOI
    • Author's post-print must be released with a Creative Commons Attribution Non-Commercial No Derivatives License
    • Publisher last reviewed on 03/06/2015
  • Classification
    green

Publications in this journal

  • Hang Chu · Aihua Zhang · Ying Han · Shengwen Lu · Ling Kong · Jinwei Han · Zhidong Liu · Hui Sun · Xijun Wang

    No preview · Article · Feb 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: A method based on a simplified sample extraction by matrix solid phase dispersion (MSPD) followed by HPLC determination is validated for analysis of five lignans in Schisandra chinensis. The MSPD parameters that affect the extraction efficiency of lignans from S. chinensis were examined and optimized. The optimal extraction conditions were determined to be that silica gel was used as dispersing sorbent, the ratio of silica gel to sample mass was selected to be 2:1, and 4 mL of methanol was used as elution solvent. The method recoveries were determined to be from 92.25 to 101.17% and the RSDs from 1.3 to 4.9%. The extraction yields of five lignans obtained by the MSPD were higher than those of traditional reflux and sonication extraction with reduced requirements on sample, solvent and time. In addition, the optimized method was applied for analyzing five real S. chinensis samples obtained from different cultivated areas.
    No preview · Article · Feb 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: Molecular distillation residue (MD-R) from ginger had the most total phenol content of 247.6mg gallic acid equivalents per gram (GAE/g) among the ginger oils. High-speed counter-current chromatography (HSCCC) technique in semi-preparative scale was successfully performed in separation and purification of 6-gingerol from MD-R by using a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (10:2:5:7, v/v/v/v). The target compound was isolated, collected, purified by HSCCC in the head-tail mode, and then analyzed by HPLC. A total of 90.38±0.53mg 6-gingerol was obtained from 600mg MD-R, with purity of 99.6%. In addition, the structural identification of 6-gingerol was performed by EI/MS, 1H NMR and 13C NMR. Moreover, the orders of antioxidant activity were vitamin E (VE)>supercritical fluid extraction oleoresin (SFE-O)=MD-R=6-gingerol>molecular distillation essential oil (MD-EO) and butylated hydroxytoluene (BHT)=VE>6-gingerol>MD-R=SFE-O>MD-EO, respectively in 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging and β-Carotene bleaching.
    No preview · Article · Feb 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: Gallocatechin gallate (GCG) possesses multiple potential biological activities. However, the content of GCG in traditional green tea is too low which limits its in-depth pharmacological research and application. In the present study, a simple, efficient and environment-friendly chromatographic separation method was developed for preparative enrichment and separation of GCG from cocoa tea (Camellia ptilophylla) which contains high content of GCG. In the first step, the adsorption properties of selected resins were evaluated, and XAD-7HP resin was chosen by its adsorption and desorption properties for GCG. In order to maximize column efficiency for GCG collection, the operating parameters (e.g., flow rate, ethanol concentration, and bed height) were optimized. We found that the best combination was the feed concentration at 20 mg/mL, flow rate at 0.75 BV/h and the ratio of diameter to bed heights as 1:12. Under these conditions, the purity of GCG was 45% with a recovery of 89%. In order to obtain pure target, a second step was established using column chromatography with sephadex LH-20 gel and 55% ethanol–water solution as eluent. After this step, the purity of the GCG was 91% with a recovery of 68% finally.
    No preview · Article · Feb 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: Peucedanum praeruptorum Dunn (BaiHuaQianHu in Chinese) is a traditional Chinese medicine that has a long history of use in China. In this study, HEK 293 α1A adrenergic cell membrane chromatography was coupled with UHPLC-ESI-MS/MS and successfully used to identify active components from Peucedanum praeruptorum Dunn. Paeruptorin A, paeruptorin B, and paeruptorin C were identified with α1A adrenergic receptor activity. Pharmacological assays showed that tamsulosin hydrochloride, paeruptorin A, paeruptorin B, and paeruptorin C in concentrations of 1 × 10−8 to 1 × 10−4 mol/mL could relax prostate strips pre-contracted with adrenalin in a concentration dependent manner. Therefore, the HEK293 α1A cell membrane chromatography coupled UHPLC–ESI–MS/MS system may be a potentially useful drug discovery method for screening for medicinal herbal components with α1A adrenergic receptor inhibitory activity.
    No preview · Article · Feb 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: Protein A chromatography is a well-established platform in downstream purification of monoclonal antibodies. Dynamic binding capacities are continuously increasing with almost every newly launched Protein A resin. Nevertheless, binding capacities of affinity chromatography resins cannot compete with binding capacities obtained with modern ion exchange media. Capacities of affinity resins are roughly 50% lower. High binding capacities of ion exchange media are supported by spacer technologies. In this article, we review existing spacer technologies of affinity chromatography resins. A yet known effective approach to increase the dynamic binding capacity of Protein A resins is oligomerization of the particular Protein A motifs. This resembles the tentacle technology used in ion exchange chromatography. Dynamic binding capacities of a hexameric ligand are roughly twice as high compared to capacities obtained with a tetrameric ligand. Further capacity increases up to 130 mg/ml can be realized with the hexamer ligand, if the sodium phosphate buffer concentration is increased from 20 to 100 mM. Equilibrium isotherms revealed a BET shape for the hexamer ligand at monoclonal antibody liquid phase concentrations higher than 9 mg/ml. The apparent multilayer formation may be due to hydrophobic forces. Other quality attributes such as recovery, aggregate content, and overall purity of the captured monoclonal antibody are not affected.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: The distribution of IgG in different salting-out extraction systems (SOESs), including ethanol/K2HPO4, Na2CO3, and trisodium citrate, was investigated. The SOESs that were composed of 20% K2HPO4 (w/w)-14% ethanol (w/w), 19% Na2CO3 (w/w)-13% ethanol (w/w) and 25% trisodium citrate (w/w)-19% ethanol (w/w) showed satisfactory results, with IgG recovery rates as high as 97.4%, 93.1%, and 90.2%, respectively. ELISA, CD and IR analyses confirmed the active retention and structural constant of IgG in the K2HPO4-ethanol system. An optimized system that consisted of 14% ethanol (w/w)-20% K2HPO4 (w/w) (pH 7.0) was selected for extracting active plasma proteins directly from pig plasma. As a result, recovery rates as high as 95.7% for IgG and 93.0% for albumin were achieved. In addition, some contaminating proteins were also removed by this system, which may provide a new alternative method for the separation and purification of immunoglobulin.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: The chromatographic behaviour of series of 4‑amino-7-chloroquinoline (4,7-ACQ) based compounds was studied by reversed-phase thin-layer chromatography (RPTLC) with binary mobile phases containing water and the organic modifiers, DMSO or acetone. The lipophilicity of the studied compounds was determined by extrapolation of retention parameters RM to pure water content in mobile phase. In order to obtain some basic insight into the chromatographic behaviour and structural features of investigated compounds PCA was performed on both chromatographic data (RM values) and calculated 2D and 3D structural descriptors. Both QSRR and QSAR models were built by means of the partial least squares (PLS) statistical method. It was found that descriptors which encode hydrophobic (dispersive) interactions have positive influence on retention, while influence of descriptors encoding polar interactions was negative. According to the obtained PLS model for inhibition of botulinum neurotoxin serotype A light chain, hydrophobic interactions influence positively on the mechanism of action of the investigated 4,7-ACQ, while polar interactions are less favoured. Contrary, the results of PLS modelling of activity against Plasmodium falciparum strains (W2, D6 and TM91C235) indicate that higher polarity of 4,7-ACQ contribute to their higher antimalarial activity.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: To investigate the effect of Shexiang Baoxin Pill (SBP), a tranditional Chinese medicine, on the pharmacokinetic (PK) parameters of simvastatin in healthy volunteers' plasma, a quantitative method was developed using an Agilent G6410A rapid performance liquid chromatography (RPLC) coupled with triple quadrupole mass spectrometry system. The established method was rapid with high extraction recovery and successfully applied for the determination of simvastatin in plasma of 16 healthy volunteers. The results demonstrated that the MRT(0-∞), T1/2 and Tmax value of simvastatin were significantly decreased, while the AUC(0-t) and Cmax values of smivastatin were increased by SBP. The pharmacokinetic study demonstrated that the metabolism parameters of simvastatin could be affected by SBP and the potential drug-drug interaction should be noted in the future clinical practice.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: Previously we found by HPLC with fluorescence detection that inorganic nitrite induces oxidation of glutathione (GSH) to its disulphide (GSSG) in intact and more abundantly in lyzed red blood cells (RBCs) from healthy humans. In the present work, we performed MS-based protein analysis and observed that nitrite (range, 0–20 mM) induces formation of S-glutathionyl hemoglobin (HbSSG) at cysteine (Cys) β93 and β112 of oxyhemoglobin (HbO2) in lyzed human RBCs (range, 6–8 mM HbO2). Hemoglobin species were isolated from incubation mixtures of nitrite in lyzed RBCs by ultrafiltration or affinity chromatography and analyzed by HPLC and LC-MS/MS. The mechanism likely involves inhibition of catalase activity by nitrite (IC50, 9 μM), which allows H2O2 to accumulate and oxidize Cys moieties of oxyhemoglobin and erythrocytic GSH to form HbSSG in addition to GSSG. In freshly prepared hemolysate samples, nitrite induced release of superoxide and molecular oxygen. In the presence of paracetamol and nitrite in hemolysate samples, 3-nitro-paracetamol was detected. Nitrite also induced S-nitroso hemoglobin (HbSNO) formation in low yield (i.e., 0.1%). Synthetic cysteine (Cys), glutathione (GSH), N-acetylcysteine (NAC) and N-acetylcysteine ethyl ester (NACET) inhibited nitrite-induced modifications of oxyhemoglobin including methemoglobin, HbSSG (CysSH >> NACET >> GSH ≈ NAC; thiol concentration, 50 μM) and HbSNO. Nitrite-induced oxidative modifications may alter physiological hemoglobin functions and may require alternative treatments for conditions associated with oxidized hemoglobin like in nitrite-induced methemoglobinemia. Accumulation of soluble Cys in RBCs via oral administration of NACET could be a new promising strategy to prevent nitrite-induced methemoglobinemia by nitrite and other oxidants.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: The counter current salting-out homogenous liquid-liquid extraction (CCSHLLE) joined with the dispersive liquid-liquid microextraction based on solidification of floating organic drop (DLLME–SFO) has been developed as a high preconcentration technique for the determination of different drugs in urine samples. Amphetamines were employed as model compounds to assess the extraction procedure and were determined by high performance liquid chromatography–ultraviolet detection (HPLC–UV). In this method, initially, NaCl as a separation reagent is filled into a small column and a mixture of urine and acetonitrile is passed through the column. By passing the mixture, NaCl is dissolved and the fine droplets of acetonitrile are formed due to salting-out effect. The produced droplets go up through the remained mixture and collect as a separated layer. Then, the collected acetonitrile is removed with a syringe and mixed with 30.0 μL 1-undecanol (extraction solvent). In the second step, the 5.00 mL K2CO3 solution (2% w/v) is rapidly injected into the above mixture placed in a test tube for further DLLME–SFO. Under the optimum conditions, calibration curves are linear in the range of 1–3000 μg L−1 and limit of detections (LODs) are in the range of 0.5–2 μg L−1. The extraction recoveries and enrichment factors ranged from 78 to 84% and 157 to 168, respectively. Repeatability (intra-day) and reproducibility (inter-day) of method based on seven replicate measurements of 100 μg L−1 of amphetamines were in the range of 3.5–4.5% and 4–5%, respectively. The method was successfully applied for the determination of amphetamines in the actual urine samples. The relative recoveries of urine samples spiked with amphetamine and methamphetamine are 90–108%.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: In this study, we investigate for the first time the presence of sulforaphane (SFN) residues in two of the most currently consumed food/dietary supplements, royal jelly and bee pollen. Chromatography-tandem mass spectrometry (LC-MS/MS) was the method employed, the mass spectrometer consisting of an ion-trap mass analyzer used with electrospray ionization (ESI) in positive ion mode. An efficient sample treatment involving a solvent extraction with methanol, centrifugation, and concentration in a rotary evaporator was proposed. In all cases average analyte recoveries were between 92 and 106%. Chromatographic analysis (16 min) was performed on a core-shell technology based column (Kinetex C18, 150 × 4.6 mm, 2.6 μm, 100 Å). The mobile phase consisted of 0.02 M ammonium formate in water and acetonitrile, with a flow rate of 0.5 mL/min in gradient elution mode. The fully validated method was selective, linear from 8 to 1000 μg/kg (bee pollen), or from 10 to 1250 μg/kg (royal jelly), precise and accurate; relative standard deviation (% RSD) and relative error (% RE) values were below 10%. Low limits of detection (LOD) and quantification (LOQ) were obtained, namely, 3 μg/kg (LOD) and 8 (bee pollen) and 10 (royal jelly) μg/kg (LOQ). The method was applied for SFN analysis in several royal jelly and bee pollen samples. SFN was detected at trace levels in some bee pollen samples (< 23 μg/kg) examined, whilst SFN went undetected in the royal jelly samples analyzed.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: The dried flower of Carthamus tinctorius L. (honghua) is a widely used traditional Chinese medicine in clinics to treat coronary heart disease, hypertension, and cerebrovascular disease due to its functions of ameliorating circulation and removing blood stasis. Hydroxysafflor yellow A (HSYA) is an active marker component of honghua. In this paper, ultra-flow liquid chromatography coupled with quadrupole-time-of-flight mass-spectrometry (UFLC-Q-TOF/MS) was established and successfully applied to the detection and identification of the metabolites in bile, urine, plasma and feces samples of normal and model rats with orally administrated HSYA. A total of 8 metabolites were observed in normal rats, while 7 metabolites were detected in model rats. The distribution of metabolites in the plasma, bile, urine and feces of normal and model rats had obvious differences. The major in vivo metabolic pathways for HSYA included hydroxylation, hydroxylation + methylation, acetylation and glucuronidation, and there were also dehydration, hydrogenation, hydration, and hydroxylation + glucuronidation. All of these metabolites were reported for the first time, and these results are valuable and important for the understanding of the metabolic process and therapeutic mechanism of HSYA and some other pigments in honghua.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: A quantitative bioanalytical liquid chromatography-tandem mass spectrometric (LC-MS/MS) assay for afatinib, an irreversible inhibitor of the ErbB (erythroblastic leukemia viral oncogene homolog)) tyrosine kinase family, was developed and validated. Plasma samples were pre-treated using salting-out assisted liquid-liquid extraction (SALLE) with acetonitrile, magnesium chloride and a stable isotopically labeled internal standard. After dilution, the extract was directly injected into the reversed-phase liquid chromatographic system. The eluate was transferred into the electrospray interface with positive ionization and compounds were detected in the selected reaction monitoring mode of a triple quadrupole mass spectrometer.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: The recent investigation on RNA interference (RNAi) related mechanisms and applications led to an increased awareness of the importance of RNA in biology. Nowadays, RNAi-based technology has emerged as a potentially powerful tool for silencing gene expression, being exploited to develop new therapeutics for treating a vast number of human disease conditions, as it is expected that this technology can be translated onto clinical applications in a near future. This approach makes use of a large number of small (namely short interfering RNAs, microRNAs and PIWI-interacting RNAs) and long non-coding RNAs (ncRNAs), which are likely to have a crucial role as the next generation therapeutics. The commercial and biomedical interest in these RNAi-based therapy applications have fostered the need to develop innovative procedures to easily and efficiently purify RNA, aiming to obtain the final product with high purity degree, good quality and biological activity. Recently, affinity chromatography has been applied to ncRNAs purification, in view of the high specificity. Therefore, this article intends to review the biogenesis pathways of regulatory ncRNAs and also to discuss the most significant and recent developments as well as applications of affinity chromatography in the challenging task of purifying ncRNAs. In addition, the importance of affinity chromatography in ncRNAs purification is addressed and prospects for what is forthcoming are presented.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: A novel pretreatment method involving microwave-assisted extraction and solid-phase purification combined with dispersive liquid-liquid microextraction (MAE-SPP-DLLME) followed by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was established for the simultaneous determination of six antibacterial pharmaceuticals including metronidazole, tinidazole, chloramphenicol, thiamphenicol, malachite green and crystal violet. The conditions of MAE were optimized using an orthogonal design and the optimal conditions were found to be 8mL for acetonitrile, 50°C for 5min. Then, neutral alumina column was employed in the solid-phase purification. Finally, the critical parameters affecting DLLME, including selection of extraction and dispersive solvent, adjustment of pH, salt concentration, extraction time, were investigated by single factor study. Under optimum conditions, good linearities (r>0.9991) and satisfied recoveries (Recoveries>87.0%, relative standard deviation (RSD)<6.3%) were observed for all of the target analytes. The limits of detection and quantification were 4.54-101.3pgkg-1 and 18.02-349.1pgkg-1, respectively. Intra-day and inter-day RSDs were all lower than 3.6%. An obvious reduction in matrix effect was observed by this method compared with microwave assisted extraction followed by purification. The established method was sensitive, rapid, accurate and employable to simultaneously determine target analytes in farmed fish, river fish and marine fish.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: A simple, sensitive, rapid, and reproducible analytical method of manassantin B in rat plasma by high performance liquid chromatography with fluorescence detection (HPLC-FL) was developed for its application to pharmacokinetic study in rats. Valsartan (VST) was used as an internal standard (IS) in this quantitative analytical method. Manassantin B and VST were extracted by simple and efficient protein precipitation method. Manassantin B was detected at 282/322. nm (excitation/emission) wavelengths using FL detector. The chromatographic separation was obtained with reverse phase C18 column and the mobile phase composed of potassium phosphate buffer containing 0.025% trifluoroacetic acid (pH 2.5; 5. mM) and acetonitrile including 0.025% trifluoroacetic acid (20:80, v/v) at 1.0. mL/min flow rate. The linearity was established at 25.0-10000. ng/mL and the lower limit of detection (LLOD) was 7. ng/mL. The intra- and inter-day accuracy and precision values of manassantin B were within. ±. 15% of the theroretical values and <9% from the nominal concentrations, respectively. Accuracy and precision values of manassantin B after stability tests were also within the acceptable ranges. Developed assay was also successfully applied to pharmacokinetic study after intravenous administration of manassantin B in rats.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: Detoxification of lithocholic acid (LCA) to lithocholic acid sulfate (LCA-S) is catalyzed by sulfotransferases, mainly SULT2A1. We developed and validated an ultra-high performance liquid chromatography-tandem mass spectrometric (UPLC-MS/MS) method to quantify human liver cytosolic-dependent LCA sulfation. Chromatographic separation was achieved on an UPLC C18 column (2.1×50mm, 1.7μm) and a gradient elution of 0.1% formic acid in water and acetonitrile. Negative electrospray ionization with multiple reaction monitoring (MRM) mode was used to quantify LCA-S (455.3→97.0) and cholic acid (407.2→343.3; internal standard). The retention time was 3.51min for LCA-S and 3.08min for cholic acid. The lower limit of quantification of LCA-S was 0.5nM (or 0.23ng/ml in 400μl total volume) and the assay was linear from 0.2 to 200pmol. Intra-day and inter-day accuracy and precision were <14%. The quality control samples were stable at room temperature for 4h, 4°C for 24h, -20°C for 14 days, and after three freeze-thaw cycles. The matrix (20-100μg cytosolic protein) did not affect LCA-S quantification. This is the first UPLC-MS/MS method applied to optimization of the human liver cytosolic LCA sulfation assay. The optimal levels of MgCl2 and 3'-phosphoadenosine 5'-phosphosulfate (PAPS) cofactor were 2.5mM and 20μM, respectively. Addition of reducing agents (2-mercaptoethanol and DL-dithiothreitol) did not affect LCA-S formation. Human liver cytosolic LCA sulfation was linear with 20-100μg of cytosolic protein and 5-30min incubation time. This UPLC-MS/MS approach offers a specific, sensitive, fast, and direct approach for quantifying human liver cytosolic LCA sulfation.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
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    ABSTRACT: A sensitive and rapid ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was developed to determine tedizolid and linezolid in rat plasma simultaneously. Chromatographic separation was carried out on an Acquity UPLC BEH C18 column and mass spectrometric analysis was performed using a XEVO TQD triple quadruple mass spectrometer coupled with an electrospray ionization (ESI) source in the positive ion mode. Multiple reaction monitoring (MRM) mode was used for quantification using target fragment ions m/z 371.4 → 343.2 for tedizolid, and m/z 338.3 → 56.1 for linezolid. This assay method has been fully validated in terms of selectivity, linearity, recovery and matrix effect, accuracy, precision and stability. The linearity of this method was found to be within the concentration range of 5-5000 ng/mL for tedizolid, and 10-10,000 ng/mL for linezolid in rat plasma, respectively. Only 3.0 min was needed for an analytical run. This assay was used to support a preclinical study where multiple oral doses were administered to rats to investigate the pharmacokinetics of tedizolid and linezolid.
    No preview · Article · Jan 2016 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences