Abstract:
:PEGylation is practically one of most important modifications of drugs including small molecules, peptides and proteins, which has been proven to dramatically improve physicochemical properties and pharmacokinetic behavior of the PEGylated drugs. However, it is a challenge currently to quantitatively analyze PEG and PEGylated drugs by various analytical methods, even mass spectrometry because of multiple parent ion distribution of PEG caused by its polydispersity of molecular weight. Here we developed a robust method with MS/MSALL technique using electrospray ionization (ESI) source coupled high resolution Quadrupole Time-of-Flight (Q-TOF) mass spectrometry for the quantification of PEG2K-Paclitaxel (PEG-PTX) and its two metabolites, PEG and Paclitaxel (PTX). The analysis was performed on a 300SB-C18 column with acetonitrile and 0.1% formic acid as the mobile phase. Samples were simply prepared by protein precipitation in a small quantity of plasma (50μL). Calibration curve was linear within the range of 50.0-4000ng/mL for PEG and PEG-PTX and 1.0-1000ng/mL for PTX. The intra- and inter-day precisions were 3.2-6.9% and 3.1-6.9% for PEG, 4.1-7.8% and 4.0-9.9% for PEG-PTX, and 3.3-4.8% and 3.1-6.9% for PTX, respectively. The recoveries were greater than 90% with low matrix effects. Afterwards, the newly developed method was successfully applied to support a preclinical pharmacokinetic study in six rats after single intravenous injection of PEG-PTX (51.7mg/kg).
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Sun H,Zhang Q,Zhang Z,Tong J,Chu D,Gu Jdoi
10.1016/j.jpba.2017.06.053subject
Has Abstractpub_date
2017-10-25 00:00:00pages
255-261eissn
0731-7085issn
1873-264Xpii
S0731-7085(17)30492-2journal_volume
145pub_type
杂志文章abstract::A variety of hallucinogens of the lysergamide type has emerged on the drug market in recent years and one such uncontrolled derivative of lysergic acid diethylamide (LSD) is 1-propionyl-LSD (1P-LSD). Due to the high potency of LSD and some of its derivatives (common doses: 50-200 μg), sensitive methods are required fo...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2019.05.062
更新日期:2019-09-10 00:00:00
abstract::The application of fully automated, unattended sample preparation performed by a laboratory robot for the analysis of drugs in biological samples requires the prevention of system failures which may arise in the on-line coupled chromatographic system or in other components of the robotic system. A computer program has...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/0731-7085(90)80083-2
更新日期:1990-01-01 00:00:00
abstract::This paper describes a method for quantification of d-amphetamine and diphenhydramine in beagle dog plasma by organic solvent field-amplified sample stacking (FASS)-capillary zone electrophoresis (CZE), using amlodipine as the internal standard. The separation was carried out at 25 °C in a 40.2 cm × 75 μm fused-silica...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2018.04.040
更新日期:2018-07-15 00:00:00
abstract::Rapamycin or sirolimus is a carboxylic lactone-lactam macrolide with a potent immunosuppressive activity. It can be successfully used to impregnate stents inserted in coronary arteries during surgical applications, preventing fatal infection and rejection adverse effect. The chemical stability of rapamycin in several ...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2006.02.009
更新日期:2006-06-07 00:00:00
abstract::The simultaneous interaction of 15 steroidal drugs with tau-cyclodextrin (tauCD) and hydroxypropyl-beta-CD (HPbetaCD) was determined by charge transfer chromatography and the relative strength of interaction was calculated for each drug-tauCD-HPbetaCD ternary complex. The mixture of CDs interacted with each steroidal ...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/s0731-7085(99)00234-4
更新日期:2000-02-01 00:00:00
abstract::One of the main issues of Green Chemistry, encouraging innovative technologies, where incorporates solutions to reduce or eliminate existing pollution problems, is the development of novel green solvents. Therefore, design of environmentally friendly solvents has had a strategic preface in the framework of green techn...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章,评审
doi:10.1016/j.jpba.2019.05.059
更新日期:2019-09-10 00:00:00
abstract::Although chemotherapy is widely used to treat human cancers, most chemotherapeutic agents only benefit a small fraction of patients because of the heterogeneity of cancers. Therefore, identifying of the sensitivity of cancers toward various chemotherapies would be important for choosing of chemotherapeutic regime. In ...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2014.10.018
更新日期:2015-01-01 00:00:00
abstract::PGE-9509924 is a nonfluorinated quinolone and is active against a variety of susceptible and drug resistant bacteria in vitro and in animal infection models. A method for determining both enantiomers of PGE-9509924 in dog plasma has been developed. The enantiomers are derivatized with a chiral derivatizing agent, (-)-...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/s0731-7085(01)00717-8
更新日期:2002-08-22 00:00:00
abstract::A simple, sensitive and specific agar diffusion bioassay for the antibacterial gatifloxacin was developed using a strain of Bacillus subtilis ATCC 9372 as the test organism. Gatifloxacin could be measured in tablets and raw material at concentration ranging 4-16 microgml(-1). The calibration graph for gatifloxacin was...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2005.07.020
更新日期:2006-02-13 00:00:00
abstract::Persistent abuse and overuse of antibiotics induces a widespread bloom of antibiotic resistance genes (ARGs) and the emergence of superbugs. A method designed to rapidly quantify ARGs in real-world scenarios is urgently needed. Here, we present an orthogonal test of heavy water and kanamycin exposure, namely, a "clove...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2020.113108
更新日期:2020-03-20 00:00:00
abstract::A simple and rapid method was developed for measuring 10 organophosphorus pesticides (acephate, methidathion, dichlorvos, fenthion, EPN, diazinon, phenthoate, malathion, fenitrothion, and cyanophos) in the serum of acute poisoning patients by LC/MS. Following deproteinization by acetonitrile, an aliquot of the biologi...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2007.01.036
更新日期:2007-05-09 00:00:00
abstract::Imidazol(in)e derivatives, having the chemical structure similar to clonidine, exert diverse pharmacological activities connected with their interactions with alpha2-adrenergic receptors, e.g. hypotension, bradycardia, sedation as well as antinociceptive, anxiolytic, antiarrhythmic, muscle relaxant and mydriatic effec...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2017.03.053
更新日期:2017-09-10 00:00:00
abstract::A reversed phase high-performance liquid chromatographic method with detection at 220 nm was developed and validated for the determination of piperacillin, I, and tazobactam, II, in Tazocin injectable powder. Acetaminophen was used as internal standard. A Hypersil BDS RP-C(18) column (250 x 4.6 mm), 5 microm particle ...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/s0731-7085(02)00129-2
更新日期:2002-07-31 00:00:00
abstract::We describe a simple method for evaluating the inhibition of collagen IV degradation by cathepsin B with a surface plasmon resonance (SPR) biosensor. The change in the SPR signal decreased with an increase in the concentration of cathepsin B inhibitors. The order of the inhibitory constant (Ki) obtained by the SPR met...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2017.06.026
更新日期:2017-10-25 00:00:00
abstract::Imigliptin has been reported as a novel dipeptidyl-peptidase-IV (DPP-4) inhibitor to treat type 2 Diabetes Mellitus (T2DM), and is currently being tested in clinical trials. In the first human clinical study, imigliptin was well tolerated and proved to be a potent DPP-4 inhibitor. Considering its potential therapeutic...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jpba.2018.05.029
更新日期:2018-08-05 00:00:00
abstract::In this study, pharmaceutical grade sorbitol was used as a model system for comparison of Raman based library spectral correlation methods with more sophisticated methods of chemometric data analysis. Both crystallizing sorbitol (CS) and non-crystallizing sorbitol (NCS) from several manufacturers were examined. The Ra...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2011.12.002
更新日期:2012-03-05 00:00:00
abstract::Stroke is the third most common cause of death in most industrialized countries. Polygonum multiflorum (He-Shou-Wu, HSW) is one of the traditional Chinese medicines with multiple pharmacological activities which is widely used in Chinese recipe. This study aims to explore the protective effect of HSW on ischemic strok...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2018.03.049
更新日期:2018-06-05 00:00:00
abstract::The aim of the study was to develop a reliable quantification procedure for mixtures of three solid forms of ranitidine hydrochloride using X-ray powder diffraction (XRPD) and Raman spectroscopy combined with multivariate analysis. The effect of mixing methods of the calibration samples on the calibration model qualit...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2008.09.054
更新日期:2009-01-15 00:00:00
abstract::High-performance liquid chromatographic methods were developed for the separation of enantiomers of four unnatural paclitaxel precursor phenylisoserine analogs on chiral stationary phases containing macrocyclic glycopeptides and cyclofructans as chiral selectors. The effects of the mobile phase composition, the nature...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2015.06.007
更新日期:2015-10-10 00:00:00
abstract::Unknown by-product associated with the synthesis of dapoxetine was isolated. The structure elucidation of this new compound using accurate mass data and NMR spectroscopy is presented herein. The unambiguous resonance assignment concluded to the formation of a tricyclic compound 4-phenyl-2H,3H,4H-naphtho[1,2-b]pyran, a...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2014.04.002
更新日期:2014-08-05 00:00:00
abstract::New treatment options and improved strategies for Lysosomal Storage Disorders (LSDs) diagnosis on dried blood spot (DBS) have led to the development of several pilot newborn screening programs. Building on a previously published protocol, we devised a new 6-plex assay based on a single DBS punch incubated into a buffe...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2018.12.002
更新日期:2019-02-20 00:00:00
abstract::A liquid chromatography tandem mass spectrometry method (LC-MS/MS) was developed to determine simultaneously the bioactive proteins including pertussis toxin (PT) subunits, filamentous hemagglutinin (FHA), pertactin (PRN) and fimbriae (FIM) in diphtheria, tetanus and acellular pertussis combined vaccine (DTaP). The tr...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2019.02.029
更新日期:2019-05-30 00:00:00
abstract::Due to severe chelating effect caused by N-hydroxylpyridone group of ciclopirox, there is no published direct HPLC or LC/MS/MS method for the determination of ciclopirox in any in vitro or in vivo matrix. Instead, the time-consuming pre-column derivatization methods have been adapted for indirect analysis of ciclopiro...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2009.08.019
更新日期:2010-01-05 00:00:00
abstract::A gas-chromatographic assay method was developed and validated for determination of busulfan in human plasma for test dose therapeutic drug monitoring. Busulfan and the internal standard (1,6-bis-(methanesulfonyloxy)hexane) were extracted from plasma samples and derivatized with 2,3,5,6-tetrafluorothiophenol prior to ...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/0731-7085(95)01342-i
更新日期:1995-08-01 00:00:00
abstract::Juglone (JL), as one of the major bioactive components present in the bark of Juglans mandshruica Maxim, exhibits versatile bioactivities, especially anti-cancer activity. To better understand the pharmacokinetic properties of juglone, the protein binding rate of juglone was determined by ultrafiltration method, and t...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2017.03.036
更新日期:2017-07-15 00:00:00
abstract::A relatively simple, selective, precise and accurate high performance liquid chromatography (HPLC) method based on a reaction of phenylisothiocyanate (PITC) with glucosamine (GL) in alkaline media was developed and validated to determine glucosamine hydrochloride permeating through human skin in vitro. It is usually p...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2005.11.044
更新日期:2006-05-03 00:00:00
abstract::Amarogentin (AG) is a secoiridoid glycoside that is mainly extracted from the traditional Chinese medicine Swertia and Gentiana, which have been widely used in clinical practice to treat liver disease. However, the exact hepatoprotective mechanism of AG was still looking forward to further elucidation by far. In this ...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2017.10.029
更新日期:2018-02-05 00:00:00
abstract::The current position with respect to the expression of biological potency and chemical purity of antibiotics is reviewed. In particular, attention is drawn to the policies adopted in the USA which have been a source of confusion regarding the expression of biological potency. It is suggested that the opportunity provi...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/0731-7085(87)80037-7
更新日期:1987-01-01 00:00:00
abstract::A rapid and sensitive method using liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed for the simultaneous determination of telmisartan and hydrochlorothiazide in human plasma. Sample preparation involved liquid-liquid extraction with diethyl ether-dichloromethane (60:40, v/v). The analytes a...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2008.08.021
更新日期:2008-12-01 00:00:00
abstract::Ligustilide (LIG) is the main active ingredient of Angelica sinensis (Oliv.) Diels and has a neuroprotective effect against ischemic stroke. However, owing to its multi-conjugated unstable structure, the compound has poor drug-forming properties. Therefore, we synthesized highly stable colorless needle crystals (known...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2020.113140
更新日期:2020-04-15 00:00:00