BIOMEDICAL CHROMATOGRAPHY
·
2015
·Vol. 29
·期 11
·1737-1743
·
IF 1.723
Xue-jia Zhai,Fen Chen,Chao-ran Zhu,Yong-ning Lu
Many amino acid neurotransmitters in urine are associated with chronic stress as well as major depressive disorders. To better understand depression, an analytical LC-MS/MS method for the simultaneous determination of 11 underivatized neurotransmitters (4-aminohippurate, 5-HIAA, glutamate, glutamine, hippurate, pimelate, proline, tryptophan, tyramine, tyrosine and valine) in a single analytical run was developed. The advantage of this method is the simple preparation in that there is no need to deconjugate the urine samples. The quantification range was 25–12,800 ng mL −1 with >85.8% recovery for all analytes. The nocturnal urine concentrations of the 11 neurotransmitters in chronic unpredictable mild stress (CUMS) model rats and control group ( n = 12) were analyzed. A series of significant changes in urinary excretion of neurotransmitters could be detected: the urinary glutamate, glutamine, hippurate and tyramine concentrations were significantly lower in the CUMS group. In addition, the urinary concentrations of tryptophan as well as tyrosine were significantly higher in chronically stressed rats. This method allows the assessment of the neurotransmitters associated with CUMS in rat urine in a single analytical run, making it suitable for implementation as a routine technique in depression research. Copyright © 2015 John Wiley & Sons, Ltd.
研究领域:
生物化学
·
医学研究
·
神经科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2018
·
IF 2.831
Renjie Hui,Yueying Gao,Jingyi Liu,Haili Liu,Chunlei Tang,Bainian Feng
Heart failure (HF) is one of the most serious health problems worldwide. A new positive inotropic compound, an isonicotinylhydrazide derivative (AF-HF001) was designed recently. A liquid chromatography-tandem mass spectrometry (LC–MS/MS) method was developed for the determination of the target analyte in mouse plasma. Samples were prepared by one step precipitation with ethyl acetate and stored in acetonitrile. Chromatographic analysis was carried out on a Hypersil Gold C 18 column (2.1 mm × 50 mm, 3 μm) with a gradient mobile phase consisting of acetonitrile and 0.1% aqueous formic acid. The analyte was detected by selective reaction monitoring (SRM) mode with target quantitative ion pair of m/z 292.1 → 148.2, using praziquantel as the internal standard (IS) m/z 313.1 → 203.2. Good linearity ( r = 0.995) was observed over a wide concentration range. The validation of method showed acceptable recovery and precision. The method has been then applied to a very first pharmacokinetic assay of AF-HF001 in mice.
研究领域:
药物分析
·
心血管药理学
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DOI
PubMed
高影响因子
Heliyon
·
2024
·
IF 3.4
Yu Yang,Xingyan Bao,Jiangyue Ning,Ruiyan Huang,Yuan Liang,Zelong Yan,Haotian Chen,Li Ding,Chang Shu
The investigation of peptide drugs has become essential in the development of innovative medications for hypertension. In this study, a sensitive high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method was developed to determine the plasma concentration and stability of the antihypertensive peptide FR-6 in rats. An isotopically labeled peptide (with an unchanged sequence) was utilized as an internal standard (IS) for validation purposes. Subsequently, this assay was employed to examine the pharmacokinetics of different administration methods (tail vein and gavage) in Sprague Dawley (SD) rats. Extracted plasma samples underwent sample preparation through methanol protein precipitation, followed by elution of FR-6 on Wondasil C18 Superb column (4.6 × 150 mm, 5 μm), using a mobile phase consisting of formic acid (0.1%) in water (A) and formic acid (0.125%)-ammonium formate (2 mM) in methanol (B). Ion pairs corresponding to FR-6 and IS were monitored via multiple reaction monitoring (MRM) under positive ion mode: m / z 400.7 → 285.1 for FR-6 and m / z 406.1 → 295.1 for IS detection respectively. The method exhibited excellent linearity with respect to FR-6 concentrations. In addition, the inter-day and intra-day precision were 0.61–6.85% and 1.76–11.75%; the inter-day and intra-day accuracy were −7.28–0.13% and −7.20–2.28%, respectively. In conclusion, the matrix effect, extraction recovery, and stability data were validated according to FDA recommended acceptance criteria for bioanalytical methods. This validated method serves as a reliable tool for determining the concentration of antihypertensive peptide FR-6, and has been successfully applied in pharmacokinetic studies involving rats.
研究领域:
药理学
·
分析化学
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DOI
PubMed
高影响因子
Bioanalysis
·
2015
·Vol. 7
·期 9
·
IF 3.003
Shirui Zheng,Zhiyuan Ma,Feifeng Song,Jianfeng Ye,Ruwei Wang,Meijuan Tu,Liping Li,Hui Zhou,Su Zeng,Huidi Jiang
Background: Deficiency or imbalance of unsaturated fatty acids will promote the pathogenesis of many diseases. In order to monitor the exposure of unsaturated fatty acids, the method based on LC–MS/MS was developed. Results: Standard calibration curves for α-linolenic acid, linoleic acid, palmitoleic acid and oleic acid were linear (r ≥0.99). The intra-and interbatch accuracy (RE%) ranged from -4.5 to 8.6%, while the intra- and interbatch precisions (RSD%) were ≤8.7%. The extraction recovery varied from 85.4 to 99.6%, and no obvious matrix effect was observed. Conclusion: The method offers a simple approach for measuring 4 unsaturated fatty acids in 1 μl rat plasma within 3.95 min.
研究领域:
分析化学
·
医学
·
营养学
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
·
2024
·
IF 2.8
Zong-liang Xu,Cheng-jian Li,Xian Qian,Hu Duan,Jin Zhou,Qian-qian Zhang,Xin Dong,Liang Zhao
Antiviral treatment for COVID-19 is considered an effective tool in reducing the rate of severe cases and deaths. As of June 2023, a total of six small molecule antiviral drugs have been conditionally approved for marketing by the National Medical Products Administration (NMPA) within China. In this study, a method of HPLC-MS/MS was established and validated for the determination of six small molecule antiviral drugs in plasma using Lamivudine as an internal standard. The chromatographic separation was performed using gradient elution with an ACE 3 C 18 -PFP column (3.0 mm × 150 mm, 3 μm), and the mobile phase consisted of deionized water and acetonitrile/water (90:10, v/v), both with 10 mmol/L of ammonium acetate and 0.1 % ammonium hydroxide added. Quantitative analysis of the six small molecule drugs was carried out through selective reaction monitoring based on the positive ion spray ionization mode. The method exhibited excellent precision, accuracy, recovery, and linearity, and it was used to determine the pharmacokinetic characteristics in rats. Our work not only established a bioanalytical method for six small molecule antiviral drugs but also provided scientific references for clinical pharmacokinetic studies.
研究领域:
药理学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
BIOMEDICAL CHROMATOGRAPHY
·
2017
·Vol. 32
·期 3
·e4126
·
IF 1.613
Fuguo Shi,Hong Pan,Yi Li,Linyan Huang,Qin Wu,Yuanfu Lu
Genipin (GP), an active metabolite of geniposide (GE), exhibits more potent pharmacological effects than its parent compound. In this paper, a sensitive LC-MS/MS method was developed and fully validated for the simultaneous determination of GE and GP in rat plasma. We found that GP degraded rapidly in rat plasma at room temperature as a result of irreversible binding with the endogenous nucleophiles in plasma. GP was stable when the sample's pH was ≤4.0. The degradation of GP in rat plasma was well prevented by immediate addition of 5% glacial acetic acid to the freshly collected plasma. The detection was performed on a tandem mass spectrometer coupled with electrospray ionization source in negative mode. Quantification was conducted by multiple reaction monitoring of the transitions [M + CH 3 COO] − m/z 447.3 → 225.3 for GE and [M − H] − m/z 225.2 → 123.1 for GP. The method exhibited high sensitivity (LLOQ 1 ng/mL for GE and 0.2 ng/mL for GP) by selecting the acetate adduct ions as the precursor ions for GE. The robust developed method was successfully applied to a pharmacokinetic study in rats after oral administration of GE.
研究领域:
药物分析
·
药理学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Congcong Yu,Dongyu Hao,Qiao Chu,Ting Wang,Songnan Liu,Tao Lan,Fenghe Wang,Canping Pan
Tea polyphenols, chlorophyll and lutein generally cause strong matrix effects and challenge analysis of trace substances in tea. Seven frequently used adsorbents were chosen to test removal ability for tea polyphenols, chlorophyll and lutein based on the adsorption isotherm fitting. Results showed that MWCNTs-NH 2 demonstrated the strongest removal ability, which may be ascribed to the π-π and electrostatic interaction. Then a method of MWCNTs-NH 2 modified QuEChERS coupled with HPLC-MS/MS detection of 10 organophosphorus pesticide residues in tea was developed and validated. Unlike traditional QuEChERS, only one adsorbent (MWCNTs-NH 2 ) was applied in this method to replace the combined effect of various adsorbents, which improved the easiness and generality of the method. The LOQs were 1.7–9.0 µg/kg. The average recovery rate ranged from 72% to 116% with RSDs less than 14%. This study provides a targeted strategy to develop analysis method for trace substances in a complicated matrix.
研究领域:
分析化学
·
食品科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
PHARMAZIE
·
2013
·Vol. 68
·期 6
·396-400
·
IF 0.962
Shi Zheng,Liu Jian,Hu Xing-Jiang,ShenTu Jian-Zhong
The purpose of this study was to design a simple, sensitive and rapid liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for a febuxostat bioequivalence study in healthy Chinese male volunteers. In this method, febuxostat and etodolac (internal standard) were isolated
from plasma samples by protein precipitation with acetonitrile. The supernatant was chromatographed on a Zorbax SB-C18 (150 × 3.0 mm, 3.5-μm particle size, Agilent) column with a SecurityGuard Inertsil Symmetry C18 column (12.5 × 4.6 mm, 5-μm particle size, Waters). The lower
limit of quantification for febuxostat in 0.2 mL of human plasma was 13.40 ng•mL–1, and the linearity was achieved over a concentration range from 13.40 to 21440 ng•mL–1. Febuxostat tablets from Hengrui Medicine Co., Ltd (test, Jiangsu, China) and
from Takeda pharmaceuticals america, Inc. (reference, Deerfield, IL) were evaluated following a single 80 mg oral dose to 18 healthy volunteers. Bioequivalence was determined by calculating 90% confidence intervals (90% CI) for the ratio of C
max, AUC
0-t,
and AUC
0-∞ values for the test and reference products, using logarithmic transformed data. The calculated 90% CIs for the ratio of C
max (88.7∼131.2%), AUC
0-t (99.2∼ 122.7%) and AUC
0-∞ (99.5∼123.1%)
values for the test and reference products were all located within the bioequivalence criteria range (80∼125% for AUC, and 70∼143% for C
max), proposed by State of Food and Drug Administration [SFDA, 2005. China]. It was concluded that the two febuxostat formulations
(test and reference) analyzed were bioequivalent in terms of rate and extent of absorption and the method met the principle of quick and easy clinical analysis.
研究领域:
药理学
·
分析化学
·
临床药学
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DOI
高影响因子
BIOMEDICAL CHROMATOGRAPHY
·
2018
·Vol. 32
·期 6
·e4192
·
IF 1.688
Dan Li,Gang Zhao,Weipeng Ai,Gao Li,Luqin Si,Jiangeng Huang,Yunzhou Chen,Sanlan Wu
In this study, a liquid chromatography–tandem mass spectrometry (LC-MS/MS) method was developed and validated to simultaneously determine the anticancer drugs etoposide and paclitaxel in mouse plasma and tissues including liver, kidney, lung, heart, spleen and brain. The analytes were extracted from the matrices of interest by liquid–liquid extraction using methyl tert -butyl ether–dichloromethane (1:1, v/v). Chromatographic separation was achieved on an Ultimate XB-C 18 column (100 × 2.1 mm, 3 μm) at 40°C and the total run time was 4 min under a gradient elution. Ionization was conducted using electrospray ionization in the positive mode. Stable isotope etoposide-d3 and docetaxel were used as the internal standards. The lower limit of quantitation (LLOQ) of etoposide was 1 ng/g tissue for all tissues and 0.5 ng/mL for plasma. The LLOQ of paclitaxel was 0.4 ng/g tissue and 0.2 ng/mL for all tissues and plasma, respectively. The coefficients of correlation for all of the analytes in the tissues and plasma were >0.99. Both intra- and inter-day accuracy and precision were satisfactory. This method was successfully applied to measure plasma and tissue drug concentrations in mice treated with etoposide and paclitaxel-loaded self-microemulsifying drug-delivery systems.
研究领域:
药物分析
·
肿瘤学
·
药代动力学
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DOI
PubMed
高影响因子
JOURNAL OF FOOD AND DRUG ANALYSIS
·
2018
·
IF 2.852
Xiujuan Chen,Chen Liang,Lijun Cui,Jian Le,Zheyuan Qian,Runsheng Zhang,Zhanying Hong,Yifeng Chai
Combinations of new antidepressants like duloxetine and second-generation antipsychotics like quetiapine are used in clinical treatment of major depressive disorder, as well as in forensic toxicology scenarios. The drug–drug interaction (DDI) between quetiapine and duloxetine is worthy of attention to avoid unnecessary adverse effects. However, no pharmacokinetic DDI studies of quetiapine and duloxetine have been reported. In the present study, a rapid and sensitive liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed for simultaneous determination of quetiapine and duloxetine in rat plasma. A one-step protein precipitation with acetonitrile was applied for sample preparation. The analytes were eluted on an Eclipse XDB-C 18 column using the mixture of acetonitrile and 2 mM ammonium formate containing 0.1% formic acid at a gradient elution within 6.0 min. Quantification was performed in multiple-reaction-monitoring mode with the ion transitions m/z 384.4 → 253.2 for quetiapine, m/z 298.1 → 154.1 for duloxetine and m/z 376.2 → 165.2 for IS (haloperidol), respectively. Good linearity was obtained in the range of 0.50–100 ng/mL for quetiapine (r 2 = 0.9972) and 1.00–200 ng/mL for duloxetine (r 2 = 0.9982) using 50 μL of rat plasma, respectively. The method was fully validated with accuracy, precision, matrix effects, recovery and stability. The validated data have met the acceptance criteria in FDA guideline. The method was applied to a pharmacokinetic interaction study and the results indicated that quetiapine had significant effect on the enhanced plasma exposure of duloxetine in rats under combination use. This study could be readily applied in therapeutic drug monitoring of major depressive disorder patients receiving such drug combinations.
研究领域:
药理学
·
分析化学
·
临床医学
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产品关联
DOI
PubMed
高影响因子
Journal of Food Measurement and Characterization
·
2022
·Vol. 16
·期 6
·4486-4496
·
IF 3.006
Feng Xian,Wu Zufang,Weng Peifang
Elderberry fruits are rich in nutrients and health-promoting bioactive compounds, meaning they are ideal substrate for lactic acid bacteria (LAB) fermentation. However, there is a lack of study on the compounds change of elderberry juice (EJ) fermented by LAB. This research used untargeted metabolomics to evaluate the changes of metabolites of EJ after fermented by Lactobacillus bulgaricus BNCC336436 and Streptococcus thermophilus ABT-T. Multivariate statistical analysis was applied to investigate significantly different between the unfermented and fermented EJ ( p < 0.05). Subsequently, 86 marker metabolites were identified by LC–MS/MS. The results showed that 16 phenolic compounds, 15 amino acids and derivatives, 11 sugars and derivatives, 10 fatty acids and derivatives, 6 organic acids and 28 other compounds were identified as marker metabolites between unfermented and fermented EJ. The content of total phenolic, total amino acids and derivatives tented to increase after fermentation, whereas the content of sucrose, l -fucose, l -malic acid, tartaric acid and citric acid decreased. The bioactive compounds of EJ were changed after lactic acid bacteria (LAB) fermentation, which provided a new choice for the development and utilization of EJ in the future.
研究领域:
食品科学
·
代谢组学
·
微生物学
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DOI
高影响因子
ANNALS OF MEDICINE
·
2023
·
IF 4.4
Zhengwen Xu,Youran Li,Ying Liu,Shengmin Liu,Lin Zhang,Jing Wang,Shaofei Su,Lin Liu,Lanlan Meng,Hongyuan Zhu,Jingru Sun,Lijun Shao,Lin Li,Yanhong Zhai,Guanghui Li,Zheng Cao
Background As folates are essential for embryonic development and growth, it is necessary to accurately determine the levels of folates in plasma and red blood cells (RBCs) for clinical intervention. The aims of this study were to develop and validate a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for quantitation of folates in plasma and RBCs and to examine the association between plasma and RBC folate concentrations and gestational diabetes mellitus (GDM), gestational hypertension (GH) and preeclampsia (PE).Methods With the in-house developed LC-MS/MS, a retrospective cross-sectional study was conducted. The healthy pregnant women of first- (n = 147), second- (n = 84) and third-trimester (n = 141) or the women diagnosed with GDM (n = 84), GH (n = 58) or PE (n = 23), that were aged between 22 and 46 years old and registered at our institute, were subjected for measurement of folic acid (FA) and 5-methyltetrahydrofolate (5-MTHF), followed by appropriate statistical association analysis.Results The assay for simultaneous quantitation of FA and 5-MTHF in plasma and RBCs was linear, stable, with imprecision less than 15% and recoveries within ±10%. The lower limits of quantification for FA and 5-MTHF measurement in whole blood were 0.57 and 1.09 nmol/L, and in plasma were 0.5 and 1 nmol/L, respectively. In the association analysis, the patients with lower RBC folate level (<906 nmol/L) presented higher risks of PE development (OR 4.861 [95% CI 1.411–16.505]) by logistic regression and restricted cubic spline (RCS) regression in a nonlinear fashion. In addition, higher level of plasma folates in pregnancy was significantly associated with GH risk but may be protective for the development of GDM.Conclusions The in-house developed LC-MS/MS method for folates and metabolites in plasma or RBC showed satisfactory analytical performance for clinical application. Further, the levels of folates and metabolites were diversely associated with GDM, GH and PE development.
研究领域:
临床医学
·
营养学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
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