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Gerred K, Kapoor A. A fit-for-purpose validation of a commercial radioimmunoassay for measurement of human peripheral oxytocin. Biochem Biophys Rep 2024; 38:101666. [PMID: 38434143 PMCID: PMC10907144 DOI: 10.1016/j.bbrep.2024.101666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/07/2023] [Accepted: 02/12/2024] [Indexed: 03/05/2024] Open
Abstract
Oxytocin (OT) is a peptide hormone synthesized in the hypothalamus and released into systemic circulation or other areas of the brain. Its physiological roles include action as a hormone with stimulation of uterine contractions and that as a neuromodulator with involvement in social behaviors and regulation of mood. Its small size and low levels within biological matrices make it challenging to accurately measure. The goal of this study was to demonstrate the specificity of the antibody, sensitivity, and reproducibility of the Phoenix Pharmaceuticals (PP) OT radioimmunoassay (RIA) for use in human urine, serum, and saliva. Specificity of the antibody was assessed by high pressure liquid chromatography with ultraviolet (HPLC-UV) separation and assay of the fractions. Immunoreactivity was evaluated using the percent OT bound, and the fraction retention times were compared to the retention time of an intact OT standard to determine which fractions contained OT in the extracted samples. Reproducibility was assessed by running replicates of pools of each biomatrix over several assays. Sensitivity was assessed by repeated measurement of physiologically relevant low-concentration specimens. In all tested specimens the greatest reactivity in assay corresponded to the same fraction(s) as the OT standard. Only minimal reactivity was found in the other fractions, suggesting that in an unfractionated sample the antibody reacts mostly with intact OT. Reproducibility was acceptable for all specimens and the coefficient of variation (CV) ranged from 3.72 to 8.04% and 5.89-12.8%, for intra and inter-assay, respectively. The limits of quantitation (LOQ) were sufficient for measurement of normal values in urine (0.643 & 1.43 pg/mL), serum (1.90 pg/mL), and saliva pools (0.485 & 4.42 pg/mL). In conclusion, the PP OT RIA is specific and sensitive enough for reproducible measurement of intact OT in human peripheral biological matrices.
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Affiliation(s)
- Keenan Gerred
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1220 Capitol Court, Madison, WI, 53715, USA
| | - Amita Kapoor
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1220 Capitol Court, Madison, WI, 53715, USA
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2
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Malkawi AK, Ohlund L, Rahman AMA, Sleno L, Siaj M. Co-stimulatory pathway competitive assay development using Liquid chromatography-tandem mass spectrometry (LC-MS/MS). J Pharm Biomed Anal 2024; 242:116034. [PMID: 38422671 DOI: 10.1016/j.jpba.2024.116034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 02/02/2024] [Accepted: 02/10/2024] [Indexed: 03/02/2024]
Abstract
T-cells play a significant role in the development of autoimmune diseases. The CD28-B7 costimulatory pathway is crucial for activating T-cells, and blocking this pathway is essential for treating autoimmune diseases. Therapeutic antibodies and fusion proteins that target costimulatory molecules like CD80, CD86, CTLA-4, and CD28 have been developed to explore the costimulation process and as targeted treatments. To advance our understanding of costimulation in autoimmunity and the inhibition of the costimulatory pathway, it is crucial to have an accurate, precise, and direct method for detecting and quantifying the soluble form of these molecules in body fluids and various biological systems. Herein, we developed a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for quantifying the four costimulatory proteins depending on the signature peptides derived from the soluble isoform of these proteins in multiple reaction monitoring (MRM) mode. The method was validated using the US FDA guidelines. The LOQ was determined as ∼0.5 nM for the four analytes, with quantification extended to 20 nM with a correlation coefficient of R2>0.998. The developed MRM method was used to analyze on-bead digested protein mixtures to establish a competitive assay for the CD28-B7 costimulatory pathway using CTLA4-Ig (Abatacept ™) as an FDA-approved drug for rheumatoid arthritis. The IC50 was determined to be 2.99 and 159.8 nM for sCD80 and sCD86, respectively. A straightforward MRM-based competitive assay will advance the knowledge about the costimulatory role in autoimmunity and the autoimmune therapeutic drug discovery, with the need for broad application on different in vitro and in vivo models to discover new targeted inhibitors.
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Affiliation(s)
- Abeer K Malkawi
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H3C 3P8, Canada
| | - Leanne Ohlund
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H3C 3P8, Canada
| | - Anas M Abdel Rahman
- Metabolomics Section, Department of Clinical Genomics, Center for Genome Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia; Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia; Department of Chemistry, Memorial University of Newfoundland, St. John's, NL AIC 5S7, Canada
| | - Lekha Sleno
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H3C 3P8, Canada
| | - Mohamed Siaj
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H3C 3P8, Canada.
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3
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Raposo F, Borja R, Gutiérrez-González JA. A comprehensive and critical review of the unstandardized Folin-Ciocalteu assay to determine the total content of polyphenols: The conundrum of the experimental factors and method validation. Talanta 2024; 272:125771. [PMID: 38394752 DOI: 10.1016/j.talanta.2024.125771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/29/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
The Folin-Ciocalteu method can be considered to be the most widely used in laboratories around the world, to quantify the total polyphenols content. Many different variations found in this assay have been reported in the scientific literature. In this review, the full experimental conditions influencing the Folin-Ciocalteu assay have been comparatively assessed and discussed. Furthermore, few studies relating to the method validation have been evaluated according to the results of selectivity, linearity, precision, trueness, limit of determination, limit of quantification and robustness. In general, the results derived from the reviewed literature are widely variable according to both, the experimental factors selected and the performance parameters reported, making difficult the comparison of the overall results published.
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Affiliation(s)
- Francisco Raposo
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (IG-CSIC), Campus Universitario Pablo de Olavide, Carretera de Utrera km 1, Edificio 46, 41013 Seville, Spain.
| | - Rafael Borja
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (IG-CSIC), Campus Universitario Pablo de Olavide, Carretera de Utrera km 1, Edificio 46, 41013 Seville, Spain
| | - Julio A Gutiérrez-González
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (IG-CSIC), Campus Universitario Pablo de Olavide, Carretera de Utrera km 1, Edificio 46, 41013 Seville, Spain
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4
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Zhang L, Vassileva E. Determination of ultra-trace level 241Am in marine sediment and seawater by combining TK200-TK221 tandem-column extraction chromatography and SF ICP-MS. Talanta 2024; 271:125724. [PMID: 38301375 DOI: 10.1016/j.talanta.2024.125724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/17/2024] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
Sound strategies for marine chemical monitoring call for measurement systems capable of producing comparable analytical results with demonstrated quality. This work presents the development and validation of a new analytical procedure for the determination of the 241Am mass fraction in marine sediment and seawater samples at low levels. The procedure includes a tandem-column extraction chromatography for separation of 241Am and sector field-inductively coupled plasma mass spectrometry (SF ICP-MS) for its determination. The separation is based on the application of two new extraction resins, TK200 and TK221. The acid leaching method was employed for the pre-treatment of marine sediments, while Fe(OH)3 co-precipitation was used for Am pre-concentration in seawater samples. The extraction behaviors of Am on TK221 resins in the different acidic mediums were investigated. The removal capabilities of the tandem TK200-TK221 columns for the 241Am in the presence of interfering elements including Pu, Pb, Hg, Bi, Tl, Pt, Hf, U, and Th were carefully investigated and the corresponding decontamination factors (DFs) estimated to be in the range from 104 to 106. The main interfering element Pu was efficiently removed with a DF of about 6 × 105. Matrix rare earth elements (REEs) in marine sediments were further removed by the application of TEVA resins. 241Am mass fraction was quantified by the application of external calibration and SF ICP-MS. Following the recommendations of the ISO/IEC 17025 guidelines, the validation of the analytical procedure was accomplished by executing it on the certified reference material (CRM) IAEA-385 (marine sediment) and the seawater IAEA-443 reference materials (RM). The obtained results showed that 241Am mass fractions were accurately determined in both reference samples, with excellent reproducibility (2.1 % and 7.6 %) and low LODs (0.4 fg g-1 and 0.2 fg g-1). The relative expanded uncertainties (k = 2) obtained were 17.1 % and 29.0 %, respectively. The overall analytical times for the application of the proposed procedure on the marine sediment and seawater samples were evaluated to be only about 9 h and 6.5 h, respectively. It shows great advantages for its potential applications for emergency monitoring of 241Am contamination in the marine environment.
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Affiliation(s)
- Ling Zhang
- International Atomic Energy Agency, Environment Laboratories, 4 Quai Antoine 1er, Principality of Monaco, 98000, Monaco; Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China.
| | - Emilia Vassileva
- International Atomic Energy Agency, Environment Laboratories, 4 Quai Antoine 1er, Principality of Monaco, 98000, Monaco
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5
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Zhang L, Liu X, Jin T, Dong J, Li X, Zhang Y, Liu D. Isomers-oriented separation of forty-five plasma bile acids with liquid chromatography-tandem mass spectrometry. J Chromatogr A 2024; 1721:464827. [PMID: 38520985 DOI: 10.1016/j.chroma.2024.464827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 03/25/2024]
Abstract
Some bile acids (BAs) were considered as biomarkers or have therapeutical effect on metabolic diseases. However, due to the existence of isomers and limitations in sensitivity, simultaneous quantification of multiple BAs remains a challenge. The aim of this study is to establish an accurate and sensitive method for the determination of multiple BAs with similar polarity. A LC-MS/MS analytical method capable of quantifying forty-five BAs simultaneously using nine stable isotope internal standards was developed and fully validated based on key isomers-oriented separation strategy. The method was further applied to analyze plasma samples to describe the dynamic profile of BAs after high glucose intake. The chromatography and mass spectrum conditions were optimized to enable the accurate quantification of forty-five BAs, while ensuring the lower limit of quantification between 0.05-10 ng/mL. The results of system suitability, linearity, dilution integrity, accuracy and precision demonstrated the good quantitative capacity and robustness of the method. A total of thirty-five BAs were quantified in plasma samples from twelve healthy Chinese individuals. The established method featured superior sensitivity and better separation efficiency compared to previous studies. Meanwhile, BAs exhibited correlations with glucose and insulin, suggesting their potential as biomarkers for metabolic disorders.
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Affiliation(s)
- Lei Zhang
- Center of Clinical Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing 100191, China; Drug Clinical Trial Center, Peking University Third Hospital, Beijing 100191, China
| | - Xu Liu
- Drug Clinical Trial Center, Peking University Third Hospital, Beijing 100191, China
| | - Tenghui Jin
- Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Jing Dong
- Shimadzu China Innovation Center, Beijing 100020, China
| | - Xiaodong Li
- Shimadzu China Innovation Center, Beijing 100020, China
| | - Youyi Zhang
- Department of Cardiology, Institute of Vascular Medicine, Peking University Third Hospital, Beijing 100191, China.
| | - Dongyang Liu
- Center of Clinical Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing 100191, China; Drug Clinical Trial Center, Peking University Third Hospital, Beijing 100191, China.
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Woo SY, Lee SY, Park SB, Chun HS. Simultaneous determination of 17 regulated and non-regulated Fusarium mycotoxins co-occurring in foodstuffs by UPLC-MS/MS with solid-phase extraction. Food Chem 2024; 438:137624. [PMID: 38011795 DOI: 10.1016/j.foodchem.2023.137624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 09/25/2023] [Accepted: 09/27/2023] [Indexed: 11/29/2023]
Abstract
Fusarium species produce numerous mycotoxins known to co-occur in food. While some of these mycotoxins (e.g., deoxynivalenol, fumonisins) are regulated in several countries, others are non-regulated (e.g., nivalenol, beauvericin). In this study, UPLC-MS/MS with solid-phase extraction cleanup was used to determine 17 Fusarium mycotoxins (FTs) simultaneously. The method showed excellent performance in terms of linearity (R2 > 0.99), LOD (<1.2 μg/kg), LOQ (<3.6 μg/kg), accuracy (70.0-116.3 %), repeatability (<15.7 %), reproducibility (<25.3 %), and expanded uncertainty (<41.7 %). The validated method was successfully applied to 198 marketed food samples collected in South Korea. Of the tested samples, 79 % were contaminated with at least one FT. Job's tears showed the highest prevalence of 14 FTs, and sorghum had the highest total FTs level (3.03 mg/kg). The results suggest that this method can be used for the simultaneous analysis of 17 FTs in food samples, which would serve as crucial information for risk management.
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Affiliation(s)
- So Young Woo
- School of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Sang Yoo Lee
- School of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Su Been Park
- School of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Hyang Sook Chun
- School of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea.
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7
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Thomann J, Vogt SB, Guessoum A, Meyer M, Vogel M, Liechti ME, Luethi D, Duthaler U. Development and validation of an LC-MS/MS method for quantifying diamorphine and its major metabolites 6-monoacetylmorphine, morphine, morphine-3-glucuronide, and morphine-6-glucuronide in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1237:124104. [PMID: 38552595 DOI: 10.1016/j.jchromb.2024.124104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/19/2024] [Accepted: 03/23/2024] [Indexed: 04/13/2024]
Abstract
Diamorphine, commonly known as heroin, is a semi-synthetic opioid analgesic. In the context of heroin-assisted treatment for opioid-dependent patients, diamorphine is mostly administered intravenously. However, recent attention has shifted towards intranasal administration as a better-tolerated alternative to the intravenous route. Here, we developed and validated a rapid bioanalytical method for the simultaneous quantification of diamorphine and its major metabolites 6-monoacetylmorphine, morphine, morphine-3-glucuronide, and morphine-6-glucuronide in human plasma using liquid chromatography-tandem mass spectrometry (LC-MS/MS). A straightforward protein precipitation extraction step was used for sample preparation. Chromatographic analyte separation was achieved using a Kinetex EVO C18 analytical column and a mobile phase gradient comprising an aqueous solution of ammonium hydrogen carbonate and methanol supplied with formic acid. Employing positive electrospray ionization and scheduled multiple reaction monitoring, we established a quantification range of 1-1,000 ng/mL for all analytes. Our validation results demonstrate a mean intra-assay accuracy of 91-106% and an intra-assay precision (CV) between 2 and 9% for all analytes and over three validation runs. The method exhibits a high extraction recovery (> 87%) and a negligible matrix effect (99-125%). Furthermore, no interferences with endogenous plasma compounds were detected. Lastly, we applied the method to assess the plasma concentrations of an opioid-dependent patient after the intranasal administration of diamorphine in a clinical study. In summary, we have successfully developed a rapid, highly reliable, and straightforward bioanalytical method for quantifying diamorphine and its metabolites in low amounts of clinical plasma samples.
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Affiliation(s)
- Jan Thomann
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland; Division of Clinical Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Severin B Vogt
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland; Division of Clinical Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Adrian Guessoum
- University Psychiatric Clinics Basel, University of Basel, Basel, Switzerland
| | - Maximilian Meyer
- University Psychiatric Clinics Basel, University of Basel, Basel, Switzerland
| | - Marc Vogel
- University Psychiatric Clinics Basel, University of Basel, Basel, Switzerland
| | - Matthias E Liechti
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland; Division of Clinical Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Dino Luethi
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland; Division of Clinical Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
| | - Urs Duthaler
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland; Division of Clinical Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland; Institute of Forensic Medicine, Department of Biomedical Engineering, University of Basel, Basel, Switzerland; Institute of Forensic Medicine, Health Department Basel-Stadt, Basel, Switzerland
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8
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Martín-Gómez B, Valverde S, Bernal J, Ares AM. Development and validation of an analytical methodology based on solvent microextraction and UHPLC-MS/MS for determining bisphenols in honeys from different botanical origins. Food Chem 2024; 450:139358. [PMID: 38631201 DOI: 10.1016/j.foodchem.2024.139358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/03/2024] [Accepted: 04/11/2024] [Indexed: 04/19/2024]
Abstract
A new analytical methodology was proposed to determine fourteen bisphenols in honeys from different botanical origins using ultra-high performance liquid chromatography-tandem mass spectrometry. A fast, efficient, environmentally-friendly and simple sample treatment (recoveries between 81% and 116%; matrix effect <20% for all studied compounds except for bisphenol E, F and S) was proposed, which involved a solvent microextraction with acetone and a small volume/amount of 1-hexanol. Chromatographic analysis (< 15 min) was performed in a Kinetex EVO C18 column under gradient elution mode. The method was validated in terms of selectivity, limits of detection (0.2-1.5 μg/kg) and quantification (0.5-4.7 μg/kg), linearity, matrix effect, trueness, and precision (relative standard deviation <17%). Finally, thirty honey samples were analyzed, revealing the presence of residues of nine bisphenols in some of them. However, quantification was possible only in two cases for bisphenol A, with a concentration of approximately 13 μg/kg.
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Affiliation(s)
- Beatriz Martín-Gómez
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - Silvia Valverde
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - José Bernal
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - Ana María Ares
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain.
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9
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Yuan T, Merai D, Gunsch MJ, Peters R, Lohani S, Bernardoni F, Zompa MA, Ahmad IH, Regalado EL, Pohl CA. Universal ion chromatography method for anions in active pharmaceutical ingredients enabled by computer-assisted separation modeling. J Pharm Biomed Anal 2024; 241:115923. [PMID: 38244392 DOI: 10.1016/j.jpba.2023.115923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/22/2023] [Accepted: 12/12/2023] [Indexed: 01/22/2024]
Abstract
Ion Chromatography (IC) is one of the most widely used methods for analyzing ionic species in pharmaceutical samples. A universal IC method that can separate a wide range of different analytes is highly desired as it can save a lot of time for method development and validation processes. Herein we report the development of a universal method for anions in active pharmaceutical ingredients (APIs) using computer-assisted chromatography modeling tools. We have screened three different IC columns (Dionex IonPac AS28-Fast 4 µm, AS19 4 µm and AS11-HC 4 µm) to determine the best suitable column for universal IC method development. A universal IC method was then developed using an AS11-HC 4 µm column to separate 31 most common anionic substances in 36 mins. This method was optimized using LC Simulator and a model which precisely predicts the retention behavior of 31 anions was established. This model demonstrated an excellent match between predicted and experimental analyte retention time (R2 =0.999). To validate this universal IC method, we have studied the stability of sulfite and sulfide analytes in ambient conditions. The method was then validated for a subset of 29 anions using water and organic solvent/water binary solvents as diluents for commercial APIs. This universal IC method provides an efficient and simple way to separate and analyze common anions in APIs. In addition, the method development process combined with LC simulator modeling can be effectively used as a starting point during method development for other ions beyond those investigated in this study.
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Affiliation(s)
- Tianyu Yuan
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA.
| | - Dolee Merai
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Matthew J Gunsch
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Ryan Peters
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Sachin Lohani
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Frank Bernardoni
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Michael A Zompa
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Imad Haidar Ahmad
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Erik L Regalado
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
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10
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Yang W, Feng J, Liang W, Nie M, Tan J, Fan R. A high-throughput method for the determination of 14 UV-filters in human plasma by LC-MS/MS: Minimize interferences from proteins and phospholipids in the matrix. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1237:124090. [PMID: 38522130 DOI: 10.1016/j.jchromb.2024.124090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/03/2024] [Accepted: 03/14/2024] [Indexed: 03/26/2024]
Abstract
Accurate monitoring of UV-filters exposure levels in human plasma is a challenge because of the significant differences in the physicochemical properties of UV-filters, as well as the matrix effect caused by abundant proteins and phospholipids in plasma. Therefore, an effective and rapid method for simultaneous determination of 14 UV-filters in human plasma using protein precipitation-solid phase extraction (SPE) coupled with liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed. Acetonitrile with 0.1 % formic acid and 10 % isopropanol (v/v) were used as mobile phases. A gradient elution on an ACQUITY UPLC BEH-C18 column at 30 °C and 0.3 mL/min flow rate was applied for separation. The electrospray ionization positive or negative modes were selected to determine the corresponding analyte to increase selectivity and sensitivity. Results showed that acetonitrile-tetrahydrofuran (v/v, 8:2) as the extraction solvent can effectively precipitate protein in plasma and improve the solubility of UV-filters. The HybridSPE cartridge improved the removal efficiency of phospholipids, while 1 mL of methanol elution increased the extraction recoveries of targets. Fourteen UV-filters achieved good linearities, low detection limits (0.050 to 0.10 μg/L) and quantification limits (0.10 to 1.0 μg/L). Method accuracy and precision, extraction recoveries, and storage stabilities of all analytes met the criterion of 80-120 %. Moreover, this method was successfully applied for the determination of UV-filters in plasma randomly collected from adults. Nine of 14 UV-filters were determined and their concentrations were distributed widely, suggesting a big variation of individual UV-filters exposure.
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Affiliation(s)
- Wucheng Yang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Jianglu Feng
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou 510631, China; Guangxi Zhuang Autonomous Region Institute of Product Quality Inspection, Nanning 530000, China
| | - Wenyao Liang
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 511447, China
| | - Mingxia Nie
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 511447, China
| | - Jianhua Tan
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 511447, China.
| | - Ruifang Fan
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
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11
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Lin J, Yang X, Wang A, Yang J, Zheng Y, Dong H, Tian Y, Zhang Z, Wang M, Song R. LC-MS/MS profiling of colon oxysterols and cholesterol precursors in mouse model of ulcerative colitis. J Chromatogr A 2024; 1722:464865. [PMID: 38598891 DOI: 10.1016/j.chroma.2024.464865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/12/2024]
Abstract
Oxysterols and cholesterol precursors are being increasingly investigated in humans and laboratory animals as markers for various diseases in addition to their important functions. However, the quantitative analysis of these bioactive molecules is obstructed by high structural similarity, poor ionization efficiency and low abundance. The current assay methods are still cumbersome to be of practical use, and their applicability in different bio-samples needs to be evaluated and optimized as necessary. In the present work, chromatographic separation conditions were carefully studied to achieve baseline separation of difficult-to-isolate compound pairs. On the other hand, an efficient sample purification method was established for colon tissue samples with good recoveries of sterols, demonstrating negligible autoxidation of cholesterol into oxysterols. The developed UPLC-APCI-MS/MS method was thoroughly validated and applied to measure oxysterols and cholesterol precursors in colon tissue of dextran sulfate sodium (DSS)-induced mouse colitis models, and it is expected to be successfully applied to the quantitative determination of such components in other tissue samples.
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Affiliation(s)
- Jiachun Lin
- China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing, 210009, China; Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Xue Yang
- China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing, 210009, China; Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Anhui Wang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Jinni Yang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Yuan Zheng
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Haijuan Dong
- The Public Laboratory Platform of China Pharmaceutical University, Nanjing, 210009, China
| | - Yuan Tian
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Zunjian Zhang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China
| | - Min Wang
- China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing, 210009, China.
| | - Rui Song
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, 24 Tongjia Lane, Nanjing 210009, China.
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12
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Emteborg H, Seghers J, García-Ruiz S, Elordui-Zapatarietxe S, Breidbach A, Labibes K, Charoud-Got J, Koeber R. Paving the way for new and challenging matrix reference materials-particle suspensions at the core of material processing providing RMs for method development and method validation. Anal Bioanal Chem 2024; 416:2079-2088. [PMID: 37987767 PMCID: PMC10950969 DOI: 10.1007/s00216-023-05046-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/03/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023]
Abstract
Sufficient homogeneity of the certified parameter(s) over the whole fill series of a matrix reference material (RM) is a fundamental quality criterion. In practice, the heterogeneity of the target parameter is evaluated, whereby a relative value can be calculated of how much the target parameter is varying over the RM-batch. A high degree of homogeneity (low heterogeneity) is an inherent quality mark of a good RM. Here, we report how challenging matrix RMs were produced by using particle suspensions at the core of the material processing step. The examples of matrix RMs produced span from whole water reference materials for persistent organic pollutants, PM2.5-like atmospheric dust certified for specific ions to microplastic RMs. Most of these RMs were subsequently used in different phases of analytical method development or for method validation. Common to all these matrices is that they cannot be easily mixed, handled, or dosed to prepare larger sample batches. In all cases, a continuously stirred suspension of particles was used during material processing. In general, relative between-bottle heterogeneities from 1.6 to 6% were achieved for the target parameters in these matrix presentations. Concerning developments of new CRMs in emerging fields, the co-dependence between the availability of validated analytical methods with good repeatability and testing materials with a known and high homogeneity of the target parameter(s) becomes particularly challenging. This situation is an RM/Method causality dilemma. To overcome that hurdle, strategies are proposed for stepwise processes where RM producers and a network of analytical method developers could work hand in hand. In addition, development of a portfolio of inexpensive and well-homogenised common samples coupled with a reporting interface is suggested. This would benefit method developers and RM producers alike. As more and more data is compiled for a specific matrix, it paves the way for new and challenging RMs that can later be used by a wider community.
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Affiliation(s)
- Håkan Emteborg
- European Commission, Joint Research Centre (JRC), Geel, Belgium.
| | - John Seghers
- European Commission, Joint Research Centre (JRC), Geel, Belgium
| | | | | | | | | | | | - Robert Koeber
- European Commission, Joint Research Centre (JRC), Geel, Belgium
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13
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Grutle LA, Holm HV, Kopperud HBM, Uhlig S. Validation of a human saliva model for the determination of leachable monomers and other chemicals from dental materials. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1236:124073. [PMID: 38452631 DOI: 10.1016/j.jchromb.2024.124073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
This study aimed to prove the validity of a mixture of chemicals, including salts, small organic molecules, mucin, and α-amylase, as saliva surrogate ("artificial saliva") for assessing leakage of methacrylate monomers and other constituents from dental materials. To achieve this, we developed and validated a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the quantification of 2-hydroxyethyl methacrylate (HEMA), triethylene glycol dimethacrylate (TEGDMA), diurethane dimethacrylate (UDMA), bisphenol A glycerolate dimethacrylate (BisGMA), diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), bisphenol A (BPA), and five homologues of ethoxylated bisphenol A dimethacrylate (BisEMA EO2-6) in unstimulated and artificial saliva, and compared their concentrations in the two saliva media following either spiking with a mixture of the compounds or incubation of test specimens of printed biomaterials. Test specimens were immersed in unstimulated/artificial saliva, incubated at 37 °C for 24 h, and saliva aliquots were extracted with methanol and subsequently analyzed by LC-MS/MS. The method was validated with regard to matrix effects, linearity, selectivity, lower limits of quantification (LLOQ), precision, bias and combined measurement uncertainty (u'). The performance characteristics of the method were comparable for unstimulated and artificial saliva samples. The combined u' for individual chemicals at a concentration of 10 × LLOQ were within the range of 5.3-14 % for unstimulated saliva and 6.9-16 % for artificial saliva, except for the BisEMA homologues. Combined u' for the latter were 27-74 % in unstimulated saliva, and 27-79 % in artificial saliva. There was no detectable release of BPA from the test specimens, and the TPO concentrations were mainly below the LLOQ. TEGDMA and UDMA were detected in the highest quantities, and at comparable concentrations in the unstimulated and artificial saliva. For all BisEMA homologues, the release was higher in unstimulated saliva than in artificial saliva. The study showed that the artificial saliva model can be a suitable replacement for native saliva, but might underestimate leakage of more lipophilic methacrylates.
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Affiliation(s)
- Lene A Grutle
- Nordic Institute of Dental Materials (NIOM), Sognsveien 70A, 0855 Oslo, Norway
| | - Heidi V Holm
- Nordic Institute of Dental Materials (NIOM), Sognsveien 70A, 0855 Oslo, Norway
| | - Hilde B M Kopperud
- Nordic Institute of Dental Materials (NIOM), Sognsveien 70A, 0855 Oslo, Norway
| | - Silvio Uhlig
- Nordic Institute of Dental Materials (NIOM), Sognsveien 70A, 0855 Oslo, Norway.
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14
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Fuente-Ballesteros A, Jano A, Bernal J, Ares AM. Development and validation of an analytical methodology based on solvent extraction and gas chromatography for determining pesticides in royal jelly and propolis. Food Chem 2024; 437:137911. [PMID: 37948804 DOI: 10.1016/j.foodchem.2023.137911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/12/2023] [Accepted: 10/29/2023] [Indexed: 11/12/2023]
Abstract
We propose a new analytical methodology to determine seven pesticides (atrazine, chlorpyrifos, chlorfenvinphos, α-endosulfan, bromopropylate, coumaphos, and τ-fluvalinate) in royal jelly and propolis products using gas chromatography-mass spectrometry. Sample treatment, with minor modifications for propolis, consisted of a solvent extraction with a hexane and isopropanol mixture, and a further clean-up step. Meanwhile, chromatographic analysis (<25 min) was performed in a DB-5MS column under programmed temperature conditions. In all cases we validated the method in terms of selectivity, limits of detection (0.1-2.8 μg kg-1) and quantification (0.3-9.2 μg kg-1), linearity, matrix effect (<±20 %), trueness (recoveries between 93 % and 118 %), and precision (relative standard deviation < 11 %). All royal jelly liquid dietary supplements were positive for chlorfenvinphos and, in the case of one of them, for α-endosulfan; chlorfenvinphos was determined in some fresh royal jelly samples, and no pesticide residues were detected in the propolis samples analysed.
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Affiliation(s)
- Adrián Fuente-Ballesteros
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - Ana Jano
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - José Bernal
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - Ana M Ares
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain.
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15
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Moragues F, Miralles P, Igualada C, Coscollà C. Determination of nitrofuran metabolites and nifurpirinol in animal tissues and eggs by ultra-high performance liquid chromatography-tandem mass spectrometry validated according to Regulation (EU) 2021/808. Heliyon 2024; 10:e27889. [PMID: 38515656 PMCID: PMC10955277 DOI: 10.1016/j.heliyon.2024.e27889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/07/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024] Open
Abstract
In this work, an analytical method for the determination of eight non-allowed nitrofurans, including nifurpirinol and the metabolites of furazolidone, furaltadone, nitrofurantoin, nitrofurazone, nifursol, nitrovin, and nifuroxazide in animal tissues, including muscle (poultry, bovine, ovine, porcine, rabbit, and fish), kidney (bovine, ovine, porcine), and eggs, has been developed and validated according to Regulation (EU) 2021/808. The method was based on derivatization with 2-nitrobenzaldehyde in acid medium, followed by vortex-assisted liquid-liquid extraction and solid phase extraction for sample purification prior to ultra-high performance liquid chromatography-tandem mass spectrometry. Under selected conditions, the method was validated showing satisfactory relative matrix effects (CV ≤ 20 %), linearity (R2 ≥ 0.98), trueness (≤20 %, expressed as bias), accuracy (83-120 %), repeatability (1.7-19.9 %), reproducibility (1.9-25.7 %), specificity (blank signal ≤30 % at the LCL), and ruggedness. The decision limit for confirmation (CCα) for the target analytes ranged from 0.27 to 0.35 μg kg-1, all below the current reference point for action (RPA) of 0.5 μg kg-1 for the studied compounds. This validated method is currently accredited according to UNE-EN ISO/IEC 17025 by the Spanish National Accreditation Body (ENAC) to be implemented for official control analyses in the Public Health Laboratory of Valencia (Spain).
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Affiliation(s)
- Francisco Moragues
- Public Health Laboratory of Valencia, Av. Catalunya 21, 46020, Valencia, Spain
| | - Pablo Miralles
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, Av. Catalunya 21, 46020, Valencia, Spain
| | - Carmen Igualada
- Public Health Laboratory of Valencia, Av. Catalunya 21, 46020, Valencia, Spain
| | - Clara Coscollà
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, Av. Catalunya 21, 46020, Valencia, Spain
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16
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Tang D, Song X, Du Y, Wang J, Lei Y, Chen B. Development of a reporter gene-based assay for the bioactivity determination of rhLH pharmaceutical products. Anal Biochem 2024; 686:115413. [PMID: 38040174 DOI: 10.1016/j.ab.2023.115413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/14/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023]
Abstract
To establish an in vitro biological activity detection method for luteinizing hormone (LH), the hLHCGR-CREB-HEK293 cell line was constructed to stably express human luteinizing hormone/chorionic gonadotropin receptor (hLHCGR). After optimization, the rhLH starting working concentration was 800 mIU/mL with 4-fold serial dilutions, 10 concentrations and an incubation time of 5 h. The method was confirmed to be highly specific, with good accuracy, precision and linearity, meeting the needs of process research and release testing, and can be used as a routine detection method for LH biological activity. With the increasing demand for research and development of rhLH biologically similar drugs, establishing a stable and simple activity assay method to evaluate the biological activity of rhLH can provide technical support for quality control of rhLH products and powerful tools for comparability research of similar products.
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Affiliation(s)
- Defang Tang
- Chengdu Jingze Pharmaceutical Co., Ltd, No.1166 Shuangyan Road, Wenjiang District, Chengdu, 611137, China
| | - Xiufang Song
- Chengdu Jingze Pharmaceutical Co., Ltd, No.1166 Shuangyan Road, Wenjiang District, Chengdu, 611137, China
| | - Yanjiao Du
- Chengdu Jingze Pharmaceutical Co., Ltd, No.1166 Shuangyan Road, Wenjiang District, Chengdu, 611137, China
| | - Jiaxin Wang
- Chengdu Jingze Pharmaceutical Co., Ltd, No.1166 Shuangyan Road, Wenjiang District, Chengdu, 611137, China
| | - Yuqing Lei
- Chengdu Jingze Pharmaceutical Co., Ltd, No.1166 Shuangyan Road, Wenjiang District, Chengdu, 611137, China
| | - Bin Chen
- Chengdu Jingze Pharmaceutical Co., Ltd, No.1166 Shuangyan Road, Wenjiang District, Chengdu, 611137, China.
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17
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Jin Y, Ma H, Fu L, Qi X, Zhang M, Di X, Zheng L, He C, Wang Z. Quantification of meropenem in serum and cerebrospinal fluid in children with bacterial meningitis with augmented renal clearance by UPLC-MS/MS. Heliyon 2024; 10:e26132. [PMID: 38390088 PMCID: PMC10881352 DOI: 10.1016/j.heliyon.2024.e26132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/25/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
Meropenem is an ultrabroad-spectrum antimicrobial agent that is often recommended for the treatment of bacterial meningitis (BM) in children. However, a subtherapeutic phenomenon occurred in BM children complicated with augmented renal clearance (ARC) at the recommended dose of meropenem. To support its pharmacokinetics, a sensitive, fast and robust ultra-liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed to measure meropenem concentrations in serum and cerebrospinal fluid (CSF). The method involved protein precipitation, and samples were diluted with a large proportion of water to eliminate solvent effects. The separation of samples was performed on a Waters Acquity™ BEH C18 column (2.1 × 50 mm i.d., 1.7 μm) with a gradient profile. The mobile phases were formic acid-water (1:1000, v/v) and acetonitrile. The linear range was good, with a concentration range of 0.100-100 μg/mL for serum and 0.0400-20.0 μg/mL for CSF. The intra-day and inter-day precisions were less than 8.0%, and the intra-day and inter-day accuracies varied -6.6% from 6.5% for the both serum and CSF. The selectivity, carry-over, dilution integrity, matrix effect, recovery and stability were validated according to international guidelines. The developed UPLC-MS/MS method successfully determined the meropenem concentrations in the serum and CSF of children with BM complicated with ARC. The results indicated that under the recommended dosing regimen (40 mg/kg every 8 h), the time to reach the effective treatment target of 50%T > MIC was only approximately 3 h and lower CSF concentrations of meropenem were observed in children with BM with ARC.
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Affiliation(s)
- Ying Jin
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hongtu Ma
- Department of Neurosurgery Children's Hospital of Chongqing Medical University. Chongqi, China
| | - Lisha Fu
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiaohui Qi
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
- Chengdu Medical College, Chengdu, Sichuan, China
| | - Mengyu Zhang
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiangjie Di
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Li Zheng
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Cuiyao He
- Department of Pharmacy, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, 136 Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Zhenlei Wang
- Department of Pharmacy, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, West China Hospital, Sichuan University, Chengdu, 610041, China
- Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, 610041, China
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18
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Lv J, Wu Q, Li S, Yi H, Xie F. Development and validation of a UPLC-PDA method for quantifying ceftazidime in dried blood spots. J Pharm Biomed Anal 2024; 239:115928. [PMID: 38134705 DOI: 10.1016/j.jpba.2023.115928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 12/24/2023]
Abstract
Bacterial infection is a leading cause of neonatal death. Ceftazidime, commonly used for neonatal infections, is often used off-label. Blood sampling limits pharmacokinetic (PK) studies in neonatal patients. The dried blood spots (DBS) are a potential matrix for microsampling. Herein, we describe an ultra-performance liquid chromatography with a photodiode array (UPLC-PDA) to determine ceftazidime in DBS from neonatal patients in support of pharmacokinetic studies. The Capitainer® device-based DBS samples containing 10 µL blood were extracted in 70% methanol/water (v/v) with acetaminophen as the internal standard (IS). The extraction process was carried out at 20 °C using a block bath shaker at 1000 rpm for 30 min. The extracted ceftazidime was subsequently eluted through an Acquity UPLC HSS T3 column (2.1 × 50 mm, 1.8 µm). Elution was achieved using a water (containing 0.1% trifluoroacetic acid)/acetonitrile linear gradient at a flow rate of 0.5 mL/min, and the analytical time was 3.2 min. The PDA detection wavelength was set at 259 nm. The method underwent thorough validation following the recommendation of the European Bioanalysis Forum (EBF) and the bioanalytical guideline established by the European Medicines Agency (EMA). No interfering peaks were detected at the retention times of ceftazidime and IS. The ceftazidime exhibited a quantification range spanning from 0.5 to 200 µg/mL, and the assay demonstrated good accuracy (intra/inter-assay ranging from 90.1% to 104.8%) and precision (intra/inter-assay coefficient of variations ranging from 4.8% to 11.7%). The method's applicability was demonstrated by analyzing clinical DBS samples collected from neonatal patients.
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Affiliation(s)
- Jianmei Lv
- Division of Biopharmaceutics and Pharmacokinetics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Qiping Wu
- Division of Biopharmaceutics and Pharmacokinetics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Sanwang Li
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China; Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Hanxi Yi
- Department of Pathology, School of Basic Medical Science, Central South University, Changsha, China
| | - Feifan Xie
- Division of Biopharmaceutics and Pharmacokinetics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
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Huang WS, Li WQ, Yu X, Xue MZ, Yuan YL, Chen C, Wu YL, Yu JH, Diao XX. A robust and validated LC-MS/MS method for the quantification of ramucirumab in rat and human serum using direct enzymatic digestion without immunoassay. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1234:123991. [PMID: 38266611 DOI: 10.1016/j.jchromb.2023.123991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/26/2024]
Abstract
A new liquid chromatography tandem mass spectrometry (LC-MS/MS) method was established to quantify the anti-gastric cancer fully human monoclonal antibody (ramucirumab) in rat and human serum. The surrogate peptide (GPSVLPLAPSSK) for ramucirumab was generated by trypsin hydrolysis and quantified using the isotopically labeled peptide GPSVLPLAPSSK[13C6, 15N2]ST containing two more amino acids at the carboxyl end as an internal standard to correct for variations introduced during the enzymatic hydrolysis process and any mass spectrometry changes. Additionally, the oxidation and deamidation of unstable peptides (VVSVLTVLHQDWLNGK and NSLYLQMNSLR) were detected. The quantitative range of the proposed method was 1-1000 μg/mL, and complete methodological validation was performed. The precision, accuracy, matrix effect, sensitivity, stability, selectivity, carryover, and interference of the measurements met the required standards. The validated LC-MS/MS method was applied to pharmacokinetic studies in rats administered ramucirumab at 15 mg/kg intravenously. Overall, a robust, efficient, and cost-effective LC-MS/MS method was successfully developed for quantifying ramucirumab in rat and human serum.
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Affiliation(s)
- Wen-Si Huang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Qiang Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiong Yu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Ming-Zhen Xue
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ya-Li Yuan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Chong Chen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ya-Li Wu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing-Hua Yu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China.
| | - Xing-Xing Diao
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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20
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Brozmanová H, Šištík P, Ďuricová J, Kacířová I, Kaňková K, Kolek M. Liquid chromatography-tandem mass spectrometry methods for quantification of total and free antibiotic concentrations in serum and exudate from patients with post-sternotomy deep sternal wound infection receiving negative pressure wound therapy. Clin Chim Acta 2024; 554:117704. [PMID: 38185284 DOI: 10.1016/j.cca.2023.117704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Systemically administered antibiotics are thought to penetrate the wounds more effectively during negative pressure wound therapy (NPWT).To test this hypothesis total and free antibiotic concentrations were quantified in serum and wound exudate. METHODS UHPLC-MS/MS methods were developed and validated for the determination of ceftazidime, cefepime, cefotaxime, cefuroxime, cefazolin, meropenem, oxacillin, piperacillin with tazobactam, clindamycin, ciprofloxacin, sulfamethoxazole/trimethoprim (cotrimoxazole), gentamicin, vancomycin, and linezolid. The unbound antibiotic fraction was obtained by ultrafiltration using a Millipore Microcon-30kda Centrifugal Filter Unit. Analysis was performed on a 1.7-µm Acquity UPLC BEH C18 2.1 × 100-mm column with a gradient elution. RESULTS The validation was performed for serum, exudates and free fractions. For all matrices, requirements were met regarding linearity, precision, accuracy, limit of quantitation, and matrix effect. The coefficient of variation was in the range of 1.2-13.6%.and the recovery 87.6-115.6%, respectively. Among the 29 applications of antibiotics thus far, including vancomycin, clindamycin, ciprofloxacin, oxacillin, cefepime, cefotaxime, cotrimoxazole, and gentamicin, total and free antibiotic concentrations in serum and exudate were correlated. CONCLUSION This method can accurately quantify the total and free concentrations of 16 antibiotics. Comparison of concentration ratios between serum and exudates allows for monitoring individual antibiotics' penetration capacity in patients receiving NPWT.
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Affiliation(s)
- Hana Brozmanová
- Department of Clinical Pharmacology, Institute of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic; Department of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic
| | - Pavel Šištík
- Department of Clinical Pharmacology, Institute of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic; Department of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic.
| | - Jana Ďuricová
- Department of Clinical Pharmacology, Institute of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic; Department of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic
| | - Ivana Kacířová
- Department of Clinical Pharmacology, Institute of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic; Department of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic
| | - Klára Kaňková
- Department of Cardiac Surgery, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic
| | - Martin Kolek
- Department of Cardiac Surgery, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic; Department of Clinic Subjects, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic
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21
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Raimo M, Zavoianu AG, Meijs W, Scholten P, Spanholtz J. Qualification of a flow cytometry-based method for the evaluation of in vitro cytotoxicity of GTA002 natural killer cell therapy. Heliyon 2024; 10:e24715. [PMID: 38304826 PMCID: PMC10830575 DOI: 10.1016/j.heliyon.2024.e24715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/12/2024] [Accepted: 01/12/2024] [Indexed: 02/03/2024] Open
Abstract
Background Natural Killer (NK) cell-based therapies represent a ground-breaking opportunity for the treatment of solid tumors and hematological malignancies. NK cell manufacturing under good manufacturing practice (GMP) is complex and requires attentive assessment the product's safety and efficacy through quality control (QC). Release testing includes monitoring of in vitro cell expansion, differentiation, purity, phenotype, and cytotoxicity. As NK cells are biologically active products, the establishment of potency methods is particularly relevant; surrogate or improper assays can lead to rejection of qualifiable batches or to release of products that falsely meet potency specifications, potentially causing low efficacy during clinical trials. As cell-based therapeutics are highly heterogeneous, no universal guidelines for product characterization are available, and developers must invest significant effort in establishing and validating robust and fit-to-purpose assays. In this study, we describe the qualification procedure of a flow cytometry-based analytical method to assess in vitro potency of GTA002 NK cells, to be applied to oNKord®/inaleucel allogeneic off-the-shelf NK cell product from Glycostem Therapeutics, undergoing a Phase I/IIa clinical trial in acute myeloid leukemia (AML) patients (NCT04632316). Methods First, we established multi-color flow cytometry panels to quantitatively determine the count of effector (E) GTA002 cells and leukemia target (T) K562 cells alone and in co-culture at different E:T ratios (10:1, 3:1, 1:1). Effector potency was then qualitatively expressed as percentage of cytotoxicity. Next, we defined protocols for method qualification to assess the pivotal features of the assays, including accuracy, precision, linearity, range, specificity, robustness, and carryover; quantitative acceptance criteria were determined for all parameters. Results of the qualification procedure are reported and discussed against pre-defined acceptance criteria. Results Overall, our methods show robust performance across all parameters, ensuring QC-compliant assessment of NK cell potency as part of the release test panel for clinical batches. Notably, we identified relevant aspects to address when progressing towards method validation to support pivotal clinical studies. Conclusions This article provides a "case-study" of how analytical method development for cell therapeutics is planned and executed from early clinical stages, anticipating the need to establish robust procedures to overcome scientific and regulatory challenges during method validation.
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Affiliation(s)
| | | | - Wilma Meijs
- Glycostem Therapeutics, Kloosterstraat 9, 5349, AB Oss, the Netherlands
| | - Pascal Scholten
- Glycostem Therapeutics, Kloosterstraat 9, 5349, AB Oss, the Netherlands
| | - Jan Spanholtz
- Glycostem Therapeutics, Kloosterstraat 9, 5349, AB Oss, the Netherlands
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22
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Dedić M, Omeragić E, Imamović B, Bilajac E, Mahmutović L, Glamočlija U, Bečić E. HPLC method for the determination of thymoquinone in growth cell medium. Technol Health Care 2024:THC231432. [PMID: 38306072 DOI: 10.3233/thc-231432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
BACKGROUND Preclinical drug testing requires in vitro and in vivo assessments that are vital for studying drug pharmacokinetics and toxicity. Distinct factors that play an important role in drug screening, such as hydrophobicity, solubility of the substance and serum protein binding can be challenging by inducing result inconsistencies. Hence, establishing accurate methods to quantify drug concentrations in cell cultures becomes pivotal for reliable and reproducible results important for in vivo dosing predictions. OBJECTIVE This research focuses on developing an optimized analytical approach via high-pressure liquid chromatography (HPLC) to determine thymoquinone (TQ) levels in monolayer cell cultures. METHODS The method's validation adheres to the International Council for Harmonisation (ICH) guideline M10, ensuring its acceptance and applicability. Using an HPLC system with a Diode Array Detector (DAD), the study fine-tuned various parameters to achieve an efficient separation of TQ. Validation covered specificity, sensitivity, matrix effects, linearity, precision, and accuracy, alongside assessing TQ stability in RPMI-1640 medium. RESULTS The HPLC method exhibited remarkable TQ specificity, free from interfering peaks at the analyte retention. Sensitivity analysis at the lower limit of quantification (LLOQ) revealed 5.68% %CV and 98.37% % mean accuracy. Matrix effect evaluation showcased accuracy within 85-115%. Linearity spanned in the concentration range of 2-10 μM with a correlation coefficient (r2) of 0.9993. Precision and accuracy were aligned with acceptance criteria. The proposed method was found to be greener in terms of usage of persistent, bioaccumulative, and toxic chemicals and solvents, corrosive samples, and waste production. CONCLUSION The developed HPLC-DAD method emerges as specific, accurate, sensitive, and reliable for TQ determination in cell cultures. It ensures robust TQ quantification, enhancing precise in vitro assessments and dependable dosing predictions for in vivo studies. Further research is advocated to investigate TQ's stability across diverse environmental conditions.
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Affiliation(s)
- Mirza Dedić
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Elma Omeragić
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Belma Imamović
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Esma Bilajac
- International University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Lejla Mahmutović
- International University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Una Glamočlija
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
- School of Medicine, University of Mostar, Mostar, Bosnia and Herzegovina
- Bosnalijek JSC, Sarajevo, Bosnia and Herzegovina
| | - Ervina Bečić
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
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Buckley C, MacHale C, Bones J. Quantitative analysis of residual aurintricarboxylic acid in biotherapeutic process streams using liquid chromatography triple quadrupole mass spectrometry. J Pharm Biomed Anal 2024; 238:115798. [PMID: 37865022 DOI: 10.1016/j.jpba.2023.115798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/08/2023] [Accepted: 10/12/2023] [Indexed: 10/23/2023]
Abstract
Aurintricarboxylic acid (ATA) is an excipient that can be added to the therapeutic protein manufacturing process as a component of the Chinese hamster ovary (CHO) cell culture media. ATA inhibits cell apoptosis and promotes cell growth in both serum-free and protein-free media. The addition of ATA is beneficial to the manufacturing process at the cell growth stage, however, residual ATA not consumed by cells can have toxicological effects on patients and its removal is required during downstream processing. To ensure manufacturing control and patient safety, the determination of residual ATA during downstream processing of biotherapeutics is required. The aim of this study was to develop and validate a liquid chromatography triple quadrupole mass spectrometry method for monitoring process clearance of ATA during downstream processing. Chromatographic separation of ATA was achieved using a 50 × 3 mm, 3 µm Imtakt Cadenza HS-C18 column and a triple quadrupole mass spectrometer operated in selected reaction monitoring mode was used for sensitive and specific detection. Linearity was assessed over a range of 62.5 ng/mL to 2000 ng/mL. Accuracy and precision were within 20% of the theoretical spike levels across the three concentration levels evaluated utilising two different antibodies, an IgG1 and an IgG4. Analyte specificity and selectivity were deemed acceptable based on no extraneous peaks detected. The method was successfully applied to monitoring process clearance of ATA in a tangential flow filtration (TFF) unit operation for downstream processing of monoclonal antibodies.
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Affiliation(s)
- Ciaran Buckley
- Eli Lilly Kinsale Limited, Dunderrow, Kinsale, Co. Cork P17 NY71, Ireland; School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - Ciara MacHale
- Eli Lilly Kinsale Limited, Dunderrow, Kinsale, Co. Cork P17 NY71, Ireland
| | - Jonathan Bones
- School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland; National Institute for Bioprocessing Research & Training, Fosters Avenue, Mount Merrion, Blackrock, A94 X099 Co. Dublin, Ireland.
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24
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Kormány R, Soós B, Horváth K. Updating the European Pharmacopoeia impurity profiling method for cetirizine and suggesting alternative column, using design space comparison. J Pharm Biomed Anal 2024; 237:115776. [PMID: 37862850 DOI: 10.1016/j.jpba.2023.115776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/06/2023] [Accepted: 10/08/2023] [Indexed: 10/22/2023]
Abstract
The goal of the present study was to develop a generic workflow to evaluate the chromatographic resolution in a design space and find replacement column for the new method. To attain this objective, a limited number of initial experiments have been performed, and a modeling tool was employed to study and compare design spaces obtained with different columns. By overlaying the different individual resolution maps (design spaces), it is possible to quickly identify a robust zone where the different columns meet a given resolution criterion. This new feature of the modeling tool is very useful for finding alternative columns for a given separation, rather than the usual column tests. It was also demonstrated that two different columns can be used as equivalents (replacement columns), providing sufficient resolution at the same working point and with a high degree of robustness.
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25
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Villani S, Fallarini S, Rezzi SJ, Di Martino RMC, Aprile S, Del Grosso E. Selective inhibition of indoleamine and tryptophan 2,3-dioxygenases: Comparative study on kynurenine pathway in cell lines via LC-MS/MS-based targeted metabolomics. J Pharm Biomed Anal 2024; 237:115750. [PMID: 37804639 DOI: 10.1016/j.jpba.2023.115750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/22/2023] [Accepted: 09/22/2023] [Indexed: 10/09/2023]
Abstract
In the last decade, the kynurenine pathway, which is the primary metabolic route for tryptophan (TRP) catabolism, has sparked great interest in the pharmaceutical sciences due to its role in immune regulation and cancer immunoediting. In this context, the development of cell-based assays might represent a tool to: i) characterize the cell secretome according to cell types; ii) gain more insight into the role of kynurenines in different disease scenarios; iii) screen hIDO1 (human indoleamine 2,3-dioxygenase) inhibitors and evaluate their effect on downstream TRP-catabolizing enzymes. This paper reports a validated Liquid Chromatography with tandem mass spectrometry (LC-MS/MS) method to simultaneously quantify TRP, L-kynurenine (KYN), xanthurenic acid (XA), 3-hydroxykynurenine (3OHKYN), kynurenic acid (KA), 3-hydroxyanthranilic acid (3OHAA), anthranilic acid (AA), 5-hydroxytryptamine (serotonin, 5HT) and tryptamine (TRYP) in Dulbecco's Modified Eagle and Eagle's Minimum Essential Media (DMEM and EMEM, respectively). The quantitative method was validated according to FDA, ICH and EMA guidelines, later applied: i) to assess the impact of selective inhibition of hIDO1 or hTDO (human tryptophan 2,3-dioxygenase) on the kynurenine pathway in A375 (melanoma), MDA-MB-231 (breast cancer), and U87 (glioblastoma) cell lines using multivariate analysis (MVA); ii) to determine the IC50 values of both well-known (i.e., epacadostat, linrodostat) and the novel hIDO1 inhibitor (i.e., BL5) in the aforementioned cell lines. The proposed LC-MS/MS method is reliable and robust. Furthermore, it is highly versatile and suitable for applications in the preclinical drug research and in vitro assays.
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Affiliation(s)
- Salvatore Villani
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Silvia Fallarini
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Sarah Jane Rezzi
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | | | - Silvio Aprile
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Erika Del Grosso
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy.
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26
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Vitali C, Peters RJB, Janssen HG, Undas AK, Munniks S, Ruggeri FS, Nielen MWF. Quantitative image analysis of microplastics in bottled water using artificial intelligence. Talanta 2024; 266:124965. [PMID: 37487270 DOI: 10.1016/j.talanta.2023.124965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 07/04/2023] [Accepted: 07/18/2023] [Indexed: 07/26/2023]
Abstract
The ubiquitous occurrence of microplastics (MPs) in the environment and the use of plastics in packaging materials result in the presence of MPs in the food chain and exposure of consumers. Yet, no fully validated analytical method is available for microplastic (MP) quantification, thereby preventing the reliable estimation of the level of exposure and, ultimately, the assessment of the food safety risks associated with MP contamination. In this study, a novel approach is presented that exploits interactive artificial intelligence tools to enable automation of MP analysis. An integrated method for the analysis of MPs in bottled water based on Nile Red staining and fluorescent microscopy was developed and validated, featuring a partial interrogation of the filter and a fully automated image processing workflow based on a Random Forest classifier, thereby boosting the analysis speed. The image analysis provided particle count, size and size distribution of the MPs. From these data, a rough estimation of the mass of the individual MPs, and consequently of the MP mass concentration in the sample, could be obtained as well. Critical materials, method performance characteristics, and final applicability were studied in detail. The method showed to be highly sensitive in sizing MPs down to 10 μm, with a particle count limit of detection and quantification of 28 and 85 items/500 mL, respectively. Linearity of mass concentration determined between 10 ppb and 1.5 ppm showed a regression coefficient (R2) of 0.99. Method precision was demonstrated by a repeatability of 9-16% RSD (n = 7) and within-laboratory reproducibility of 15-27% RSD (n = 21). Accuracy based on recovery was 92 ± 15% and 98 ± 23% at a level of 0.1 and 1.0 ppm, respectively. The quantitative performance characteristics thus obtained complied with regulatory requirements. Finally, the method was successfully applied to the analysis of twenty commercial samples of bottled water, with and without gas and flavor additives, yielding results ranging from values below the limit of detection to 7237 (95% CI [6456, 8088]) items/500 mL.
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Affiliation(s)
- Clementina Vitali
- Wageningen Food Safety Research, Wageningen University & Research, Akkermaalsbos 2, 6708 WB, Wageningen, the Netherlands; Wageningen University, Laboratory of Organic Chemistry, Stippeneng 4, 6708 WE, Wageningen, the Netherlands.
| | - Ruud J B Peters
- Wageningen Food Safety Research, Wageningen University & Research, Akkermaalsbos 2, 6708 WB, Wageningen, the Netherlands
| | - Hans-Gerd Janssen
- Wageningen University, Laboratory of Organic Chemistry, Stippeneng 4, 6708 WE, Wageningen, the Netherlands; Unilever Foods Innovation Centre - Hive, Bronland 14, 6708 WH, Wageningen, the Netherlands
| | - Anna K Undas
- Wageningen Food Safety Research, Wageningen University & Research, Akkermaalsbos 2, 6708 WB, Wageningen, the Netherlands
| | - Sandra Munniks
- Wageningen Food Safety Research, Wageningen University & Research, Akkermaalsbos 2, 6708 WB, Wageningen, the Netherlands
| | - Francesco Simone Ruggeri
- Wageningen University, Laboratory of Organic Chemistry, Stippeneng 4, 6708 WE, Wageningen, the Netherlands; Wageningen University, Physical Chemistry and Soft Matter, Stippeneng 4, 6708 WE, Wageningen, the Netherlands.
| | - Michel W F Nielen
- Wageningen Food Safety Research, Wageningen University & Research, Akkermaalsbos 2, 6708 WB, Wageningen, the Netherlands; Wageningen University, Laboratory of Organic Chemistry, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
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Schofield RC, Scordo M, Shah G, Carlow DC. Measurement of ThioTEPA and Its Metabolite TEPA in Plasma and Cerebrospinal Fluid by Turbulent Flow Chromatography-Tandem Mass Spectrometry. Methods Mol Biol 2024; 2737:423-433. [PMID: 38036843 DOI: 10.1007/978-1-0716-3541-4_39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
N,N',N''-Triethylenethiophosphoramide (thioTEPA) is a polyfunctional, organophosphorus alkylating agent that has been a primary treatment of multiple solid malignancies for many years and more recently as part of conditioning regimens prior to hematopoietic stem cell transplantation for a variety of hematologic malignancies. In vivo, thioTEPA is quickly metabolized to N,N',N″-triethylenephosphoramide (TEPA). ThioTEPA and TEPA have similar alkylating activity and both exhibit outstanding central nervous system penetration. Therefore, it is possible and desirable to monitor both compounds in plasma and cerebrospinal fluid (CSF).This chapter describes a method to measure both compounds simultaneously. ThioTEPA and TEPA are extracted with solvent from plasma and CSF by the addition of deuterated internal standards prepared in methanol. Chromatographic separation is attained using a C18 column and mass spectrometry which is performed in the positive ion mode. Herein, we describe a fast, accurate, and sensitive assay to quantify both compounds in plasma and CSF by turbulent flow LC-MS/MS which allows for fast and accurate therapeutic drug monitoring and timely dose modifications.
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Affiliation(s)
- Ryan C Schofield
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael Scordo
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Gunjan Shah
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Dean C Carlow
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Hutcherson SM, Schofield RC, Carlow DC. Determination of Treosulfan and Fludarabine in Plasma by Turbulent Flow Liquid Chromatography-Tandem Mass Spectrometry (TFLC-MS/MS). Methods Mol Biol 2024; 2737:453-463. [PMID: 38036846 DOI: 10.1007/978-1-0716-3541-4_42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Treosulfan is a structural analog of the alkylating agent busulfan which has been shown in clinical trials to exhibit comparable myeloablative activity while causing fewer serious side effects. Treosulfan is currently being considered for FDA approval in combination with fludarabine, one of the most commonly used myeloablative agents, as a conditioning regimen prior to hematopoietic stem cell transplantation (HSCT). Because plasma concentrations of both treosulfan and fludarabine exhibit significant interindividual variability, therapeutic drug monitoring (TDM) is indicated to ensure dosages are administered that maximize efficacy while minimizing toxicity. In this chapter, we describe a rapid, accurate assay to detect treosulfan and fludarabine simultaneously in human plasma using turbulent flow liquid chromatography coupled to electrospray ionization tandem mass spectrometry (TFLC-ESI-MS/MS). Treosulfan and fludarabine are extracted from only 100 μL of acidified plasma via protein precipitation with methanol containing isotope-labeled internal standards. The extract is injected into the TFLC-ESI-MS/MS system, and the analytes are quantified using multiple reaction monitoring and a six-point calibration curve.
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Affiliation(s)
- Shelby M Hutcherson
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ryan C Schofield
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Dean C Carlow
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Schofield RC, Scordo M, Shah G, Carlow DC. Quantification of Clofarabine and Fludarabine in Plasma by High-Performance Liquid Chromatography-Tandem Mass Spectrometry. Methods Mol Biol 2024; 2737:175-184. [PMID: 38036821 DOI: 10.1007/978-1-0716-3541-4_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Allogeneic hematopoietic cell transplantation (allo-HCT) is a potentially curative therapeutic treatment for many patients with high-risk hematologic malignancies and bone marrow failure syndromes. While allo-HCT can be highly effective, it is met with significant bone marrow conditioning regimen-related toxicities and complications such as infections related to poor immune reconstitution. This chapter describes the measurement of clofarabine and fludarabine concentrations to support clinical trials whose goal is to determine the optimal therapeutic ranges in order to maximize effectiveness while minimizing variability and regimen-related adverse events and toxicities. Moreover, the same holds true for patients receiving fludarabine as part of their lymphodepleting chemotherapy for chimeric antigen receptor T-cells (CAR T-cells). It is believed that one of the causes of variable outcomes after CAR T-cell therapy is lymphodepletion due to the variable fludarabine concentrations.This chapter describes a HPLC-MS/MS method to measure both compounds simultaneously. Clofarabine and fludarabine are extracted with solvent from plasma by the addition of deuterated internal standards prepared in methanol. Chromatographic separation is attained using a reversed-phase column followed by mass spectrometry which is performed in the positive ion mode. Herein, the described method to quantify both compounds in plasma is fast, accurate, and sensitive and allows for rapid drug concentration monitoring and timely dose adjustments.
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Affiliation(s)
- Ryan C Schofield
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael Scordo
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Gunjan Shah
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Dean C Carlow
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Ponce-Rodriguez HD, Riera-Williams JP. A simple, fast, and cost-effective smartphone-based digital imaging method for quantification of lidocaine hydrochloride in pharmaceutical formulations. Ann Pharm Fr 2024; 82:96-109. [PMID: 37625529 DOI: 10.1016/j.pharma.2023.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/13/2023] [Accepted: 08/21/2023] [Indexed: 08/27/2023]
Abstract
OBJECTIVE A simple, highly specific, accurate and fast method by smartphone-based digital imaging was developed for estimating lidocaine hydrochloride in pharmaceutical formulations. MATERIAL AND METHODS To obtain the images, a Galaxy A03 Core smartphone and an image acquisition device developed in the laboratory were used to control the incident factors in reproducibility of the measurements. The processing of the images was carried out with the Color Grab application. Finally, the absorbance values were calculated using the RGB intensity values of blank, standard, and sample solutions. The proposed method was compared with spectroscopic and chromatographic methods. RESULTS The reaction between copper and lidocaine hydrochloride was characterized, showing better results in an equimolar ratio and maintaining the pH of the solution above 11.5. The use of the device for the capture of digital images allowed to control those sensitive parameters for reproducibility so that the analytical measurements showed adequate precision and accuracy. Validation of the main parameters of the method showed compliance with acceptance criteria. The application of the method for the analysis of injectable samples achieved reliable results, which were statistically similar to other reference instrumental methods. CONCLUSION The proposed method presented figures of merit in relation to linearity, precision, selectivity, accuracy, and robustness; it was carried out by designing and manufacturing a device for capturing digital images on a smartphone, which were analyzed to obtain RGB intensity values. These data are finally used to calculate absorbance values of solutions. All these elements provide this work with innovative characteristics in the field of analysis for control of pharmaceutical formulations.
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Affiliation(s)
- Henry Daniel Ponce-Rodriguez
- Departamento de Control Químico, Facultad de Ciencias Químicas y Farmacia, Universidad Nacional Autónoma de Honduras, Ciudad Universitaria, Tegucigalpa, Honduras.
| | - Jessica Patracia Riera-Williams
- Departamento de Control Químico, Facultad de Ciencias Químicas y Farmacia, Universidad Nacional Autónoma de Honduras, Ciudad Universitaria, Tegucigalpa, Honduras
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Schofield RC, Scordo M, Shah G, Carlow DC. Determination of Busulfan and Melphalan in Plasma by Turbulent Flow Chromatography-Tandem Mass Spectrometry. Methods Mol Biol 2024; 2737:141-151. [PMID: 38036818 DOI: 10.1007/978-1-0716-3541-4_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Melphalan and busulfan are DNA-alkylating agents that are often used concurrently in hematopoietic stem cell transplant (HCT) conditioning regimens. Studies have demonstrated that this combination of alkylating agents is very effective and well-tolerated prior to HCT. This combination is widely used for acute leukemia, advanced lymphoid malignancies, and multiple myeloma. Our goal was to develop an assay for the rapid measurement of both compounds simultaneously in the hopes that rapidly measuring their concentrations could possibly shorten the length of hospital stay. It would also simplify specimen handling in the clinic and the laboratory, reduce the amount of blood drawn, and allow for rapid reporting of the drug levels, thereby facilitating rapid dose adjustments.This chapter describes a validated method that measures both compounds simultaneously. Melphalan and busulfan were extracted from plasma with methanol containing deuterated internal standards. Turbulent flow chromatography coupled with reversed-phase HPLC was used for separation, while the mass spectrometer was set in the positive ion mode. This method has proven accurate and rapid and allowed for timely dose adjustments. The assay was linear over the clinically relevant ranges; the analytical measurement range for busulfan and melphalan was 10-5000 ng/mL and 10-15,000 ng/mL, respectively. Specimens containing elevated drug levels were diluted yielding a final clinically reportable range of 10-25,000 ng/mL for busulfan and 10-75,0000 ng/mL for melphalan. This method is very suitable for simultaneous measurements of these drugs and is currently being used to support pharmacokinetic studies.
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Affiliation(s)
- Ryan C Schofield
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael Scordo
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Gunjan Shah
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Dean C Carlow
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Bibi A, Anjum F, Hussain SR, Ahad A, Deen AU, Suleman M, Jan B. Surveillance of pesticide residues in tomato and eggplant and assessment of acute and chronic health risks to the consumers in Pakistan. Environ Sci Pollut Res Int 2024; 31:6385-6397. [PMID: 38148460 DOI: 10.1007/s11356-023-31581-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/12/2023] [Indexed: 12/28/2023]
Abstract
Pesticide application has become a mandatory requirement of the modern agricultural system, resulting in the objectionable levels of pesticide residues in the treated food commodities and posing health threats to the consumers. This study aimed at optimization and validation of an analytical method which can be reliably applied for routine monitoring of the selected eighteen widely reported pesticides in tomato and eggplant. The principle of quick, easy, cheap, effective, rugged, and safe, i.e., QuEChERS, involving the acetate-buffered extraction followed by cleanup using the primary secondary amines (PSA) was employed. The analytical method was validated at three spiking levels (0.05, 0.01, 0.005 mg/kg) using gas chromatograph-micro electron capture detector (GC-µECD). Gas chromatograph-mass spectrometric detector (GC-MSD) was also used for confirmation and quantification using selective ion monitoring (SIM) mode. The method was applied on fresh samples of tomato (n = 33) and eggplant (n = 27) collected from local markets of Khyber Pakhtunkhwa, Pakistan, in the crop season 2020-2021. Twenty-five (76%) tomato samples and fifteen (56%) eggplant samples were found positive for one or more pesticides. Though the chronic and acute health risk assessments indicate that both of these vegetables are unlikely to pose any unacceptable health threat to their consumers, yet the risks from regular intake of pesticides-contaminated food commodities should be regularly addressed for possible protection of the public health and assurance of safe and consistent agro-trade, alike.
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Affiliation(s)
- Aasma Bibi
- Pesticides Chemistry Section, Directorate of Soil and Plants Nutrition, Agricultural Research Institute, Tarnab, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan
| | - Farida Anjum
- Directorate of Soil and Plants Nutrition, Agricultural Research Institute, Tarnab, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan.
| | - Syed Roohul Hussain
- Pesticides Chemistry Section, Directorate of Soil and Plants Nutrition, Agricultural Research Institute, Tarnab, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Ahad
- Pesticides Chemistry Section, Directorate of Soil and Plants Nutrition, Agricultural Research Institute, Tarnab, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan
| | - Azeem Ud Deen
- Pesticides Chemistry Section, Directorate of Soil and Plants Nutrition, Agricultural Research Institute, Tarnab, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Suleman
- Department of Agricultural Chemistry and Biochemistry, University of Agriculture, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan
| | - Bilal Jan
- Pesticides Chemistry Section, Directorate of Soil and Plants Nutrition, Agricultural Research Institute, Tarnab, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan
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Schofield RC, Scordo M, Shah G, Carlow DC. Simultaneous Determination of Prednisone and Prednisolone in Serum by Turbulent Flow Liquid Chromatography-Tandem Mass Spectrometry. Methods Mol Biol 2024; 2737:413-422. [PMID: 38036842 DOI: 10.1007/978-1-0716-3541-4_38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Allogeneic hematopoietic cell transplantation (allo-HCT) is a potentially curative therapeutic treatment for patients with high-risk hematologic malignancies and bone marrow failure syndromes. While allo-HCT can be highly effective, it is met with significant regimen-related toxicities and complications such as graft-versus-host disease (GVHD), poor immune reconstitution, and infections. Prednisone is the preferred treatment for patients with both acute and chronic GVHD. While effective, high-dose prednisone can cause many complications, including weight gain, skin fragility, muscle weakness, bone demineralization, hyperglycemia, insomnia, and psychosis. Optimizing prednisone (and prednisolone) dosing by measuring their concentrations and calculating their pharmacokinetic parameters will allow for personalized treatments for patients, producing more effective and safer treatments for GVHD. This chapter describes a method to measure both compounds simultaneously. Prednisone and prednisolone are extracted from serum by the addition of methanol containing deuterated internal standards. Chromatographic separation is achieved using a reversed-phase HPLC column followed by tandem mass spectrometry performed in the positive ion mode. This assay is fast, accurate, sensitive and allows for rapid drug measurements and timely dose modifications.
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Affiliation(s)
- Ryan C Schofield
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael Scordo
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Gunjan Shah
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Dean C Carlow
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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San Román A, Abilleira E, Irizar A, Santa-Marina L, Gonzalez-Gaya B, Etxebarria N. Optimization for the analysis of 42 per- and polyfluorinated substances in human plasma: A high-throughput method for epidemiological studies. J Chromatogr A 2023; 1712:464481. [PMID: 37948771 DOI: 10.1016/j.chroma.2023.464481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/25/2023] [Accepted: 10/29/2023] [Indexed: 11/12/2023]
Abstract
There is an increasing awareness about the presence of per- and polyfluoroalkyl substances (PFAS) in many environmental and biological compartments, including human biofluids and tissues. However, the increase of PFAS replacements, including alternatives with shorter chain or less bioaccumulative potential, has broaden the exposure and the need for wider identification procedures. Moreover, the low volumes available for human blood or plasma, and the high number of samples needed to assess adequately epidemiologic studies, require particularly fast, reproducible and, if possible, miniaturized protocols. Therefore, accurate and robust analytical methods are still needed to quantify the PFAS's burden in humans and to understand potential health risks. In this study, we have developed and validated the analysis of 42 PFAS in human plasma by means of a Captiva 96-well micro extraction plate and a LC-q-Orbitrap. For the optimization of the analytical workflow, three extraction/clean-up methods were tested, and the selected one was validated using spiked artificial and bovine plasma at four concentration levels. The final method showed high absolute recoveries for the 42 PFAS, ranging from 52% to 130%, instrumental detection limits between 0.001-0.6 ng mL-1, overall good precision (CV < 20% for most of the PFAS) and a low uncertainty (< 30% of relative expanded deviation, k = 2). The method was further validated both with the NIST plasma Standard Reference Material 1950, showing that the accuracy of the provided results was between 63%-101%, and by the proficiency test arranged by the Arctic Monitoring Assessment Program (AMAP, 2022) obtaining satisfactory results within 95% confidence interval of the assigned value.
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Affiliation(s)
- Anne San Román
- Institute of Health Research Biodonostia, Paseo Dr. Begiristain, s/n, 20014 Donostia Gipuzkoa, Basque Country; Plentzia Marine Station (PiE), University of Basque Country (UPV/EHU), Areatza Hiribidea, 47, 48620 Plentzia, Bizkaia, Basque Country; Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940, Leioa, Basque Country, Spain; Department of Public Health from the Basque Government, Avenida Navarra, 4, 20013 Donostia Gipuzkoa, Basque Country.
| | - Eunate Abilleira
- Institute of Health Research Biodonostia, Paseo Dr. Begiristain, s/n, 20014 Donostia Gipuzkoa, Basque Country; Department of Public Health from the Basque Government, Avenida Navarra, 4, 20013 Donostia Gipuzkoa, Basque Country
| | - Amaia Irizar
- Institute of Health Research Biodonostia, Paseo Dr. Begiristain, s/n, 20014 Donostia Gipuzkoa, Basque Country
| | - Loreto Santa-Marina
- Institute of Health Research Biodonostia, Paseo Dr. Begiristain, s/n, 20014 Donostia Gipuzkoa, Basque Country; Department of Public Health from the Basque Government, Avenida Navarra, 4, 20013 Donostia Gipuzkoa, Basque Country
| | - Belen Gonzalez-Gaya
- Plentzia Marine Station (PiE), University of Basque Country (UPV/EHU), Areatza Hiribidea, 47, 48620 Plentzia, Bizkaia, Basque Country; Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940, Leioa, Basque Country, Spain
| | - Nestor Etxebarria
- Plentzia Marine Station (PiE), University of Basque Country (UPV/EHU), Areatza Hiribidea, 47, 48620 Plentzia, Bizkaia, Basque Country; Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940, Leioa, Basque Country, Spain
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Abdelrahman MM, Naguib IA, Zaazaa HE, Nagieb HM. Ecofriendly single-step HPLC and TLC methods for concurrent analysis of ternary antifungal mixture in their pharmaceutical products. BMC Chem 2023; 17:173. [PMID: 38041191 PMCID: PMC10691124 DOI: 10.1186/s13065-023-01083-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 11/08/2023] [Indexed: 12/03/2023] Open
Abstract
Two accurate, sensitive, and selective methods for simultaneous determination of miconazole nitrate (MIC), nystatin (NYS), and metronidazole (MET) in pure state or drug product were established and verified. First, RP-HPLC-DAD was designed. Separation was accomplished using a ZOBRAX Eclipse Plus RP-C8 column that was running under an isocratic elution of methanol: 0.05% aqueous solution of sodium dodecyl sulphate (40: 60 v/v), with a flow rate that was regulated at 0.8 mL/min. The column temperature was adjusted at 25 °C and diode array detector was monitored at 220 nm. The linearity range of the proposed method was achieved at the concentration of 5-50, 4-50, and 4-40 µg/mL and the attained retention time for the studied drugs was 2.52, 3.52 and 4.99 min for MIC, NYS, and MET, correspondingly. Second, a TLC-densitometric approach was used to resolve the three compounds. Resolution of the three cited drugs was carried out using TLC aluminum plates pre-coated with 0.25 mm silica gel 60 F254. A developing solvent comprised ethyl acetate: toluene: methanol: triethyl amine: formic acid (3: 1: 7: 0.3: 0.1 by volume) (pH = 5.5) was utilized and scanning of the resolved bands at 215 nm. Linearity of the developed TLC method was evaluated and evident to be 0.4-2, 0.4-2.2, and 0.4-2 μg/band for MIC, NYS, and MET, in that order. The suggested chromatographic methods were verified according to ICH directives. The findings of the developed chromatographic procedures were statistically compared with the results of the reported ones using student's t-test and F-test. Furthermore, two green assessment tools evaluated the indicated methods' level of greenness (GAPI and AGREE).
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Affiliation(s)
- Maha M Abdelrahman
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Alshaheed Shehata Ahmad Hegazy St., Beni-Suef, 62514, Egypt.
| | - Ibrahim A Naguib
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, 21944, Taif, Saudi Arabia
| | - Hala E Zaazaa
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo, 11562, Egypt
| | - Hend M Nagieb
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
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Gutiérrez-Martín D, Restrepo-Montes E, Golovko O, López-Serna R, Aalizadeh R, Thomaidis NS, Marquès M, Gago-Ferrero P, Gil-Solsona R. Comprehensive profiling and semi-quantification of exogenous chemicals in human urine using HRMS-based strategies. Anal Bioanal Chem 2023; 415:7297-7313. [PMID: 37946034 PMCID: PMC10684428 DOI: 10.1007/s00216-023-04998-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 11/12/2023]
Abstract
Chemicals infiltrate our daily experiences through multiple exposure pathways. Human biomonitoring (HBM) is routinely used to comprehensively understand these chemical interactions. Historically, HBM depended on targeted screening methods limited to a relatively small set of chemicals with triple quadrupole instruments typically. However, recent advances in high-resolution mass spectrometry (HRMS) have facilitated the use of broad-scope target, suspect, and non-target strategies, enhancing chemical exposome characterization within acceptable detection limits. Despite these advancements, establishing robust and efficient sample treatment protocols is still essential for trustworthy broad-range chemical analysis. This study sought to validate a methodology leveraging HRMS-based strategies for accurate profiling of exogenous chemicals and related metabolites in urine samples. We evaluated five extraction protocols, each encompassing various chemical classes, such as pharmaceuticals, plastic additives, personal care products, and pesticides, in terms of their extraction recoveries, linearity, matrix effect, sensitivity, and reproducibility. The most effective protocol was extensively validated and subsequently applied to 10 real human urine samples using wide-scope target analysis encompassing over 2000 chemicals. We successfully identified and semi-quantified a total of 36 chemicals using an ionization efficiency-based model, affirming the methodology's robust performance. Notably, our results dismissed the need for a deconjugation step, a typically labor-intensive and time-consuming process.
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Affiliation(s)
- Daniel Gutiérrez-Martín
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research - Severo Ochoa Excellence Center (IDAEA), Spanish Council of Scientific Research (CSIC), 08034, Barcelona, Spain
- Institute of Sustainable Processes (ISP), Dr. Mergelina S/N, 47011, Valladolid, Spain
- Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Paseo de Belén 7, 47011, Valladolid, Spain
| | - Esteban Restrepo-Montes
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research - Severo Ochoa Excellence Center (IDAEA), Spanish Council of Scientific Research (CSIC), 08034, Barcelona, Spain
| | - Oksana Golovko
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), 75007, Uppsala, Sweden
| | - Rebeca López-Serna
- Institute of Sustainable Processes (ISP), Dr. Mergelina S/N, 47011, Valladolid, Spain
- Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Paseo de Belén 7, 47011, Valladolid, Spain
| | - Reza Aalizadeh
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Nikolaos S Thomaidis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771, Athens, Greece
| | - Montse Marquès
- Universitat Rovira I Virgili, Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Sant LLorenç 21, 43201, Reus, Catalonia, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
| | - Pablo Gago-Ferrero
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research - Severo Ochoa Excellence Center (IDAEA), Spanish Council of Scientific Research (CSIC), 08034, Barcelona, Spain
| | - Rubén Gil-Solsona
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research - Severo Ochoa Excellence Center (IDAEA), Spanish Council of Scientific Research (CSIC), 08034, Barcelona, Spain.
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Min SW, Lim DK, Lee S, Kim J, Baek SY. Accurate determination of 11 representative phthalates and di(2-ethylhexyl) terephthalate in polyvinyl chloride using isotope dilution-gas chromatography/mass spectrometry. J Chromatogr A 2023; 1711:464454. [PMID: 37871502 DOI: 10.1016/j.chroma.2023.464454] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 10/25/2023]
Abstract
Phthalates are mainly used as plasticizers in polyvinyl chloride (PVC). However, prolonged exposure to phthalates poses considerable risks to human health. Consequently, the utilization of phthalates in consumer products is subject to regulations, with a defined threshold of 0.1 %. In this study, we developed an accurate and simultaneous method for determination of 11 representative phthalates and a non-phthalate plasticizer (di(2-ethylhexyl) terephthalate, DEHT) in PVC as a higher-order reference method. Homogeneously prepared PVC samples, each containing approximately 0.1 % of the target plasticizer compounds, were analyzed using gas chromatography-mass spectrometry (GC-MS) with deuterium-labeled phthalates and DEHT. The developed method could effectively separate and quantify all target plasticizers without interference with each other and potential overlap between the isomeric forms of phthalates, di-isodecyl phthalate, and di-isononyl phthalate. The developed method has high-order metrological quality, exhibiting exceptional selectivity, accuracy, repeatability (≤ 2.17 %), reproducibility (≤ 2.16 %), and relative expanded uncertainty (≤ 5.6 %). This analytical method is thus suitable for accurately assessing the target plasticizer levels in PVC products for ensuring compliance with the established 0.1 % threshold. This method was successfully applied to quantify twelve distinct plasticizers in PVC products obtained from the Korean market, validating its effectiveness and reliability in real-world scenarios.
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Affiliation(s)
- Sang-Won Min
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea; Department of Chemistry, Chungnam National University, Daejon 34134, Republic of Korea
| | - Dong Kyu Lim
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea
| | - Sunyoung Lee
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea
| | - Jeongkwon Kim
- Department of Chemistry, Chungnam National University, Daejon 34134, Republic of Korea
| | - Song-Yee Baek
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea.
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Loh TP, Cooke BR, Tran TCM, Markus C, Zakaria R, Ho CS, Theodorsson E, Greaves RF. The LEAP checklist for Laboratory Evaluation and Analytical Performance characteristics reporting of clinical measurement procedures. Clin Chim Acta 2023; 551:117605. [PMID: 37844680 DOI: 10.1016/j.cca.2023.117605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 10/11/2023] [Indexed: 10/18/2023]
Abstract
Reporting a measurement procedure and its analytical performance following method evaluation in a peer-reviewed journal is an important means for clinical laboratory practitioners to share their findings. It also represents an important source of evidence base to help others make informed decisions about their practice. At present, there are significant variations in the information reported in laboratory medicine journal publications describing the analytical performance of measurement procedures. These variations also challenge authors, readers, reviewers, and editors in deciding the quality of a submitted manuscript. The International Federation of Clinical Chemistry and Laboratory Medicine Working Group on Method Evaluation Protocols (IFCC WG-MEP) developed a checklist and recommends its adoption to enable a consistent approach to reporting method evaluation and analytical performance characteristics of measurement procedures in laboratory medicine journals. It is envisioned that the LEAP checklist will improve the standardisation of journal publications describing method evaluation and analytical performance characteristics, improving the quality of the evidence base that is relied upon by practitioners.
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Affiliation(s)
- Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, Singapore.
| | - Brian R Cooke
- Department of Clinical Biochemistry, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Thi Chi Mai Tran
- Faculty of Medical Technology, Hanoi Medical University, Viet Nam; Department of Clinical Biochemistry, National Children's Hospital, Hanoi, Viet Nam
| | - Corey Markus
- Flinders University International Centre for Point-of-Care Testing, Flinders Health and Medical Research Institute, Adelaide, Australia
| | - Rosita Zakaria
- RMIT University, School of Health and Biomedical Sciences, Melbourne, Victoria, Australia; Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Chung Shun Ho
- Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT, Hong Kong
| | - Elvar Theodorsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linkoping University, SE-58183 Linkoping, Sweden
| | - Ronda F Greaves
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia; Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Parkville, Victoria, Australia.
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Mir KB, Abrol V, Wani TU, Jan I, Singh N, Khan NA, Dar AA, Sabri Sultan RM, Lone SA, Iesa MA, Alhag SK, Al-Shuraym LA, Helm N, AL-Farga A. Validation and development of RP-HPLC method for quantification of glibenclamide in rat plasma and its application to pharmacokinetic studies in wistar rats. Heliyon 2023; 9:e20876. [PMID: 37928045 PMCID: PMC10623144 DOI: 10.1016/j.heliyon.2023.e20876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 11/07/2023] Open
Abstract
Herein, we report a novel, simple, specific, accurate and cost-friendly validated reverse phase-high performance liquid chromatographic (RP-HPLC) method for the quantification of second generation sulphonylurea based antidiabetic drug, glibenclamide (GLB) in rat plasma and its application to calculate pharmacokinetic parameters in wistar rats. The internal standard used was flufenamic acid. The chromatographic separation was conducted on C18 column (250 mm × 4.6 mm x 5 μm, Agilent-Zorbax, SB) using isocratic elution with mobile phase containing Acetonitrile: Water (1:1; v/v) pH adjusted to 4.0 with 0.03 % glacial acetic acid and detected by photo-diode array as detector. Calibration curves made in the rat plasma were linear in the range of 50-1200 ng/ml with r2 = 0.998. The LLOQ was 40 ng/ml. This method was effectively applied for pharmacokinetic studies of Glibenclamide following administration through oral route as solid dispersion formulation to Wistar rats. Several methods are available in the literature which can be employed for the quantification of Glibenclamide but such methods are tedious, provide lower sensitivity, less simultaneous resolution and are time-consuming. Therefore the present methods suits best for the quantification of Glibenclamide from Wistar rats.
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Affiliation(s)
- Khalid Bashir Mir
- Department of Pharmaceutical Sciences, University of Kashmir, J&K, 190001, India
- School of Medical & Allied Sciences, KR Mangalam University, Gurgaon, Haryana, India
| | - Vidushi Abrol
- Fermentation & Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, J&K, 180001, India
| | - Taha U. Wani
- Department of Pharmaceutical Sciences, University of Kashmir, J&K, 190001, India
| | - Ishrat Jan
- Research Centre for Residue and Quality Analysis, Sher-e-Kashmir University of Agricultural Sciences & Technologyof Kashmir, Shalimar Campus, Srinagar, J&K, 190025, India
| | - Nasseb Singh
- Synthetic Organic Chemistry Laboratory, Faculty of Sciences, Shri Mata Vaishno Devi University, Katra, 182320, India
| | - Nisar A. Khan
- Department of Pharmaceutical Sciences, University of Kashmir, J&K, 190001, India
| | - Alamgir A. Dar
- Research Centre for Residue and Quality Analysis, Sher-e-Kashmir University of Agricultural Sciences & Technologyof Kashmir, Shalimar Campus, Srinagar, J&K, 190025, India
| | | | - Showkat A. Lone
- Department of Basic Sciences, College of Science and Theoretical Studies, Saudi Electronic University, Jeddah-M, Riyadh, 11673, Saudi Arabia
| | - Mohamed A.M. Iesa
- Department of Physiology, Al Qunfudah Medical College, Umm Al Qura University, Mecca, Saudi Arabia
| | - Sadeq K. Alhag
- Biology Department, College of Science and Arts, King Khalid University, Muhayl Asser, 61913, Saudi Arabia
| | - Laila A. Al-Shuraym
- Biology Department, Faculty of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Nawal Helm
- Biochemistry Departments, College of Science, Unversity of Jeddah, Jeddah, 23218, Saudi Arabia
| | - Ammar AL-Farga
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah, 23218, Saudi Arabia
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Rašević M, Malenović A, Protić A, Zečević M. Analytical method development supported by DoE-DS approach for enantioseparation of (S,S)- and (R,R)-moxifloxacin. J Pharm Biomed Anal 2023; 235:115645. [PMID: 37598470 DOI: 10.1016/j.jpba.2023.115645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 08/22/2023]
Abstract
In this paper, method for enantiomeric purity testing of fourth-generation fluoroquinolone, moxifloxacin hydrochloride, was developed and validated. Exceptional enantioselectivity for this assay was achieved using cyclodextrin type Chiral Stationary Phase (CSP), phenylcarbamate-β-cyclodextrin CSP, and mobile phase consisted of acetonitrile and triethylammonium acetate (TEAA) buffer. Analytical Quality by Design (AQbD) methodology, comprising Design of Experiments (DoE) - Design Space (DS) approach, was used for method development. In order to select appropriate Critical Method Parameters (CMPs), risk assessment was done using combined three step strategy that involved Ishikawa diagram - CNX (Control, Noise and eXperimental) - FMEA (Failure Mode and Effect Analysis). Three CMPs were further selected and investigated in this study: acetonitrile content in the mobile phase (30-50%, v/v), triethylamine content in the TEAA buffer (0.1-1.5%, v/v) and aqueous phase pH (3.5-4.5). Monte Carlo simulations were performed and 3D-DS was computed. One point situated in the center of 3D-DS was selected as working point for method validation, with the following values of CMPs: acetonitrile content in the mobile phase set to 37% (v/v), triethylamine content in TEAA 0.8% and pH value of the aqueous phase set at 4.0. Also, 2D-DS was created (with fixed one factor - pH value of aqueous phase at 4.0) which also gave us confirmation that the selection of working conditions was suitable. The proposed enantioselective method was further on tested for its quantitative robustness, as well as for its suitability for the intended purpose through validation studies.
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Affiliation(s)
- Marija Rašević
- University of Belgrade, Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia.
| | - Anđelija Malenović
- University of Belgrade, Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
| | - Ana Protić
- University of Belgrade, Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
| | - Mira Zečević
- University of Belgrade, Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
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Tomassetti F, Pelagalli M, Nicolai E, Sarubbi S, Calabrese C, Giovannelli A, Codella S, Viola G, Diamanti D, Massoud R, Bernardini S, Pieri M. Validation of the New MINI-CUBE for Clinic Determination of Erythrocyte Sedimentation Rate. J Hematol 2023; 12:208-214. [PMID: 37936975 PMCID: PMC10627362 DOI: 10.14740/jh1165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/02/2023] [Indexed: 11/09/2023] Open
Abstract
Background Erythrocyte sedimentation rate (ESR) indirectly measures blood fibrinogen, and it is altered by all those pathological conditions that modify the aggregation of red blood cells. The international guidelines by the International Council for Standardization in Hematology (ICSH) define the Westergren method as the gold standard for ESR, although it is completely operator-dependent, time-consuming, and requires a patient's blood consumption. Therefore, the validation of new ESR analyzers is needed. The aim of this study is the validation of a new automated ESR analyzer, MINI-CUBE (DIESSE, Diagnostica Senese, Italy). Methods The samples (n = 270) were collected at the University Hospital of the University of Rome Tor Vergata. A comparison between the automated instrument and the gold standard was performed. Statistical analyses were processed by MedCalc software. Results The comparison analysis performed on the overall samples reported a good agreement, showing a Spearman rank correlation coefficient of 0.94 (P < 0.001), compared to the Westergren test. The Bland-Altman analysis showed a mean bias of 1.5 (maximum (max.):19.6; minimum (min.): -16.6). Inter-run (level 1 coefficient of variation (CV): 4.9%; level 2 CV: 0.8%), intra-run (level 1 CV: 21.1%; level 2 CV: 3.2%), and inter-instrument (level 1 CV: 27.1%; level 2 CV: 5.6%) precision were also assessed. The hematocrit value did not interfere with the analysis: Spearman rank correlation coefficient of 0.929 (P < 0.001); mean bias of 1.3 (max.:18.3; min.: -15.6). Conclusions Overall results from MINI-CUBE asserted a good correlation rate with the gold standard, and it could be considered an accurate, and objective alternative for the Westergren test.
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Affiliation(s)
- Flaminia Tomassetti
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Martina Pelagalli
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Eleonora Nicolai
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Serena Sarubbi
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Cinzia Calabrese
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Alfredo Giovannelli
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Silvia Codella
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Gemma Viola
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Daniela Diamanti
- Research and Development Department, DIESSE Diagnostica Senese Spa, Monteriggioni 53035, Siena (SI), Italy
| | - Renato Massoud
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Sergio Bernardini
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
| | - Massimo Pieri
- Department of Experimental Medicine, University of Rome “Tor Vergata”, Rome 00133, Italy
- Department of Laboratory Medicine, “Tor Vergata” University Hospital, Rome 00133, Italy
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Oyugi M, Wang X, Yang X, Wu D, Rogstad S. Method validation and new peak detection for the liquid chromatography-mass spectrometry multi-attribute method. J Pharm Biomed Anal 2023; 234:115564. [PMID: 37451094 DOI: 10.1016/j.jpba.2023.115564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/27/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
The multi-attribute method (MAM) is a liquid chromatography-mass spectrometry (LC-MS) peptide mapping technique that has been proposed as a replacement for several conventional quality control (QC) methods for therapeutic proteins. In addition to quantification of multiple product quality attributes (PQAs), MAM can also monitor impurities using a new peak detection (NPD) feature. Here, results are provided from method validation and NPD studies of an MAM approach applied to rituximab as a model monoclonal antibody (mAb). Twenty-one rituximab PQAs were monitored, including oxidation, pyroglutamination, deamidation, lysine clipping, and glycosylation. The PQA monitoring aspect of the method was validated according to ICH Guidance. Accuracy, precision, specificity, detection and quantitation limits, linearity, range, and robustness were demonstrated for this MAM approach with minimal issues. All PQAs were successfully validated except for several oxidation sites, which did not pass intermediate precision criteria. The variability found in oxidation measurements was attributed to artificial oxidation during sample preparation and could likely be alleviated through several approaches. The NPD aspect of the method was also evaluated. A spike-in approach was used to assess the limits of detection and quantitation (LOD/LOQ) of the NPD feature of MAM. For NPD, the peak intensity threshold was found to be the most critical parameter for accurate detection of impurities since a low threshold can result in false positives while a high threshold can obscure the detection of true peaks. Overall, the MAM approach presented and validated here has been demonstrated to be suitable for both targeted monitoring of rituximab PQAs and non-targeted detection of new peaks that represent impurities.
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Affiliation(s)
- Mercy Oyugi
- Office of Biotechnology Products, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA; Office of Testing and Research, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA
| | - Xiaoshi Wang
- Office of Biotechnology Products, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA; Office of Testing and Research, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA
| | - Xiangkun Yang
- Office of Testing and Research, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA; Prime Medicine, Cambridge, MA 02139, USA
| | - Di Wu
- Office of Testing and Research, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA; AbbVie, South San Francisco, CA 94080, USA
| | - Sarah Rogstad
- Office of Testing and Research, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD 20903, USA.
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Chen Y, Jo J, Hernandez E, Wang H, Bernardoni F. Biocatalytic cascade process of islatravir: Analytical and regulatory control strategy of minor enantiomer. J Pharm Biomed Anal 2023; 234:115536. [PMID: 37343454 DOI: 10.1016/j.jpba.2023.115536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/16/2023] [Accepted: 06/15/2023] [Indexed: 06/23/2023]
Abstract
Commercial process of islatravir (MK-8591, EFdA) utilizes biocatalytic cascade reactions to construct the ribose moiety of the molecule which bears three chiral centers. However, this biocatalytic process also brought analytical challenges where all stereoisomers and process related compounds are controlled in one isolated intermediate, the final drug substance. A chiral LC method was developed to resolve all those compounds from islatravir and its minor enantiomer by thorough column screening and careful optimization. Detail of designing key method validation components such as method linearity, precision and robustness is discussed, and their results were presented. The method was successfully validated to fulfill various expectation from each individual health authority including FDA, EMA, PMDA, and ANVISA.
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Affiliation(s)
- Yun Chen
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA.
| | - Junyong Jo
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA.
| | - Edgar Hernandez
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Heather Wang
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Frank Bernardoni
- Analytical Research and Development, MRL, Merck & Co., Inc., Rahway, NJ 07065, USA
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Thorat S, Ogale P, Gautam M, Shaligram U, Gairola S. Development and validation of capillary electrophoresis sodium dodecyl sulfate (CE-SDS) method for purity analysis of pertussis toxin, filamentous haemagglutinin and pertactin antigens. Vaccine 2023; 41:5854-5862. [PMID: 37591705 DOI: 10.1016/j.vaccine.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 07/18/2023] [Accepted: 08/03/2023] [Indexed: 08/19/2023]
Abstract
We report here the development and validation of CE-SDS method for purity analysis of Acellular Pertussis vaccine components viz. purified Pertussis toxin (PTx), purified Filamentous haemagglutinin (FHA), and Pertactinantigen (PRN). The method was found to be specific and showed excellent linearity at a concentration range of 15.62 µg/mL-1000 µg/mL for purified PTx, 31.25 µg/mL-1000 µg/mL for purified FHA, and 3.9 µg/mL-1000 µg/mL for PRN antigen. Method reported limit of quantification (LOQ) 31.25 µg/mL, 62.5 µg/mL, and 7.8 µg/mL for purified PTx, FHA, and PRN respectively. Method precision (repeatability and intermediate precision) for purity and molecular weight determination in product matrix was below 10% for all three proteins. Method comparability studies were performed with SDS-PAGE. CE-SDS demonstrated corroborating results with SDS-PAGE for the estimation of purity and molecular weight analysis. However, CE-SDS method exhibited better resolution capabilities for resolving all the sub-unit peaks of PTx and isoforms of purified FHA. CE-SDS method also demonstrated stability indicating potential and thus fits its intended purpose as an effective analytical tool for quality control of acellular pertussis-based vaccines.
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Affiliation(s)
- Shrikant Thorat
- Serum Institute of India Pvt. Ltd, Hadapsar, Pune 411 028, Maharashtra, India
| | - Pratik Ogale
- Serum Institute of India Pvt. Ltd, Hadapsar, Pune 411 028, Maharashtra, India
| | - Manish Gautam
- Serum Institute of India Pvt. Ltd, Hadapsar, Pune 411 028, Maharashtra, India
| | - Umesh Shaligram
- Serum Institute of India Pvt. Ltd, Hadapsar, Pune 411 028, Maharashtra, India
| | - Sunil Gairola
- Serum Institute of India Pvt. Ltd, Hadapsar, Pune 411 028, Maharashtra, India.
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Artymowicz M, Struck-Lewicka W, Wiczling P, Markuszewski M, Markuszewski MJ, Siluk D. Targeted quantitative metabolomics with a linear mixed-effect model for analysis of urinary nucleosides and deoxynucleosides from bladder cancer patients before and after tumor resection. Anal Bioanal Chem 2023; 415:5511-5528. [PMID: 37460824 PMCID: PMC10444683 DOI: 10.1007/s00216-023-04826-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/07/2023] [Accepted: 06/26/2023] [Indexed: 08/23/2023]
Abstract
In the present study, we developed and validated a fast, simple, and sensitive quantitative method for the simultaneous determination of eleven nucleosides and deoxynucleosides from urine samples. The analyses were performed with the use of liquid chromatography coupled with triple quadrupole mass spectrometry. The sample pretreatment procedure was limited to centrifugation, vortex mixing of urine samples with a methanol/water solution (1:1, v/v), evaporation and dissolution steps. The analysis lasted 20 min and was performed in dynamic multiple reaction monitoring mode (dMRM) in positive polarity. Process validation was conducted to determine the linearity, precision, accuracy, limit of quantification, stability, recovery and matrix effect. All validation procedures were carried out in accordance with current FDA and EMA regulations. The validated method was applied for the analysis of 133 urine samples derived from bladder cancer patients before tumor resection and 24 h, 2 weeks, and 3, 6, 9, and 12 months after the surgery. The obtained data sets were analyzed using a linear mixed-effect model. The analysis revealed that concentration level of 2-methylthioadenosine was decreased, while for inosine, it was increased 24 h after tumor resection in comparison to the preoperative state. The presented quantitative longitudinal study of urine nucleosides and deoxynucleosides before and up to 12 months after bladder tumor resection brings additional prospective insight into the metabolite excretion pattern in bladder cancer disease. Moreover, incurred sample reanalysis was performed proving the robustness and repeatability of the developed targeted method.
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Affiliation(s)
- Małgorzata Artymowicz
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Aleja Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Wiktoria Struck-Lewicka
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Aleja Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Paweł Wiczling
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Aleja Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Marcin Markuszewski
- Department of Urology, Medical University of Gdańsk, Mariana Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Michał J Markuszewski
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Aleja Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Danuta Siluk
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Aleja Gen. J. Hallera 107, 80-416, Gdańsk, Poland.
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Renai L, Marzullo L, Bonaccorso G, Orlandini S, Mattivi F, Bruzzoniti MC, Del Bubba M. Innovative thermally assisted on-line solid phase extraction-reversed phase liquid chromatography applied to targeted nutrimetabolomics in human biofluids. Anal Chim Acta 2023; 1269:341429. [PMID: 37290855 DOI: 10.1016/j.aca.2023.341429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/09/2023] [Accepted: 05/24/2023] [Indexed: 06/10/2023]
Abstract
In this study, the use of thermal desorption in on-line solid phase extraction coupled with reversed phase liquid chromatography (on-line SPE-LC) was for the first time proposed and demonstrated for the desorption of analytes strongly retained by multiple interaction polymeric sorbents. In detail, this analytical strategy was applied to the on-line SPE-LC targeted analysis of a model set of 34 human gut metabolites characterized by heterogeneous physicochemical properties (i.e., octanol-water partition coefficient in the range -0.3 - 3.4). The novel thermally assisted on-line SPE approach was investigated in comparison to conventional room temperature desorption strategies based on the use of (i) an optimized elution gradient or (ii) organic desorption followed by post-cartridge dilution. The thermally assisted desorption strategy has been shown to be better performing and suitable for the development of a reliable and sensitive method for the analysis of the model group of analytes in urine and serum. In more detail, under the optimized experimental conditions, the proposed method provided negligible matrix effects in both biofluids for almost all target analytes. Moreover, method quantification limits were in the ranges 0.026-7.2 μg L-1 and 0.033-23 μg L-1 for urine and serum, respectively, i.e., comparable to or lower than those reported in methods previously published.
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Affiliation(s)
- Lapo Renai
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Luca Marzullo
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Giulia Bonaccorso
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Serena Orlandini
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Fulvio Mattivi
- Metabolomics Unit, Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via Mach 1, 38098, San Michele all'Adige, Trento, Italy
| | | | - Massimo Del Bubba
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
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Handley S, Dote N, Wanandy T, Prentice L. Verification of the Bühlmann fCAL turbo faecal calprotectin assay on the Binding Site Optilite benchtop analyser. Pract Lab Med 2023; 36:e00318. [PMID: 37649548 PMCID: PMC10462488 DOI: 10.1016/j.plabm.2023.e00318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 12/18/2022] [Accepted: 06/19/2023] [Indexed: 09/01/2023] Open
Abstract
Objectives Inflammatory bowel disease (IBD) and irritable bowel syndrome (IBS) are increasingly prevalent disorders. Faecal calprotectin is useful in the differential diagnosis of IBD from IBS and monitoring IBD activity. We verified the Bühlmann fCAL turbo faecal calprotectin assay on the Binding Site, Optilite benchtop analyser. Design Accuracy, precision, lower limit of quantitation (LLoQ), and linearity of the Bühlmann fCAL turbo faecal calprotectin assay on the Binding Site, Optilite benchtop analyser were ascertained. Comparison with the Bühlmann Quantum Blue fCAL extended and DiaSorin, Liaison calprotectin assays were also undertaken. Difference between assays was evaluated using the Wilcoxon signed-rank test and method comparison was undertaken using Spearman's rank correlation (rs), difference plots and Passing-Bablok regression analyses. Results The fCAL turbo assay was linear between 25 and 10,000 μg/g, and the LLoQ was 25 μg/g. Intra-, and inter-assay imprecision was <5%. There was a good agreement (rs = 0.96) and no significant bias (3%, p = 0.10) present between the fCAL turbo and Quantum Blue extended assays. Between the fCAL turbo and DiaSorin, liaison assays there was a good agreement (rs = 0.97), but a significant bias (53%, p = <0.01) was present. Conclusions The fCAL turbo assay performs well on the Binding Site, Optilite benchtop analyser. Calprotectin results are commutable between with Bühlmann fCAL turbo and Quantum Blue fCAL extended assays, but not between Bühlmann and DiaSorin calprotectin assays.
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Affiliation(s)
- S.A. Handley
- Biochemistry, Department of Pathology, Royal Hobart Hospital, 48 Liverpool Street, Hobart, Tasmania, 7000, Australia
- School of Medicine, University of Tasmania, Menzies Institute for Medical Research, Level 1, Medical Science 1, 17 Liverpool Street, Hobart, Tasmania, 7000, Australia
| | - N.P. Dote
- Biochemistry, Department of Pathology, Royal Hobart Hospital, 48 Liverpool Street, Hobart, Tasmania, 7000, Australia
| | - T. Wanandy
- School of Medicine, University of Tasmania, Menzies Institute for Medical Research, Level 1, Medical Science 1, 17 Liverpool Street, Hobart, Tasmania, 7000, Australia
- Department of Clinical Immunology and Allergy, Royal Hobart Hospital, 48 Liverpool Street, Hobart, Tasmania, 7000, Australia
| | - L. Prentice
- Biochemistry, Department of Pathology, Royal Hobart Hospital, 48 Liverpool Street, Hobart, Tasmania, 7000, Australia
- School of Medicine, University of Tasmania, Menzies Institute for Medical Research, Level 1, Medical Science 1, 17 Liverpool Street, Hobart, Tasmania, 7000, Australia
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Panchakul C, Thongdeeying P, Itharat A, Pipatrattanaseree W, Kongkwamcharoen C, Davies NM. Analytical determination, antioxidant and anti-inflammatory activities of Bhamrung-Lohit a traditional Thai medicine. Res Pharm Sci 2023; 18:449-467. [PMID: 37614616 PMCID: PMC10443669 DOI: 10.4103/1735-5362.378091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/25/2023] [Accepted: 02/28/2023] [Indexed: 08/25/2023] Open
Abstract
Background and purpose Bhamrung-Lohit (BRL) remedy is a traditional Thai medicine (TTM). There are few reports of biological activity, the activity of its constituent plants, or quantitative analytical methods for the content of phytochemicals. In this study, we investigated antioxidant, anti-inflammatory activity, and total phenolic and flavonoid content and validated a new analytical method for BRL. Experimental approach Antioxidant activity was evaluated by a 2,2-diphenyl-1-picrylhydrazyl (DPPH and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical scavenging. The cellular antioxidant activity was evaluated by inhibition of the superoxide anion (O2●-) production from HL-60 cells and anti-inflammatory activity by inhibition of nitric oxide production in RAW264.7 cells. The total phenolic and flavonoid contents were analyzed using the Folin-Ciocalteu method and an aluminum chloride colorimetric assay, respectively. Validated analytical procedures were conducted according to International Conference on Harmonization (ICH) guidelines. Findings/Results An ethanolic extract of BRL exerted potent DPPH radical scavenging activity and moderate antioxidant and anti-inflammatory activity. Caesalpinia sappan exerted the greatest effect and the highest content of total phenolics and flavonoids. The HPLC method validated parameters that complied with ICH requirements. Each peak showed selectivity with a baseline resolution of 2.0 and precision was less than 2.0% CV. The linearity of all compounds was > 0.999 and the recovery % was within 98.0%-102.0%. The validated results demonstrated specificity/selectivity, linearity, precision, and accuracy with appropriate LOD and LOQ. Conclusion and implication BRL remedy, a TTM demonstrated antioxidant and anti-inflammatory properties. This study is the first report on the biological activity and the validation of an HPLC method for BRL remedy.
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Affiliation(s)
- Chitralada Panchakul
- Faculty of Medicine, Thammasat University (Rangsit Campus), Pathumthani, 12120, Thailand
| | - Pakakrong Thongdeeying
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University (Rangsit Campus), Pathumthani, 12120 Thailand
- Center of Excellence in Applied Thai Traditional Medicine Research, Thammasat University (Rangsit Campus), Pathumthani, 12120, Thailand
| | - Arunporn Itharat
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University (Rangsit Campus), Pathumthani, 12120 Thailand
- Center of Excellence in Applied Thai Traditional Medicine Research, Thammasat University (Rangsit Campus), Pathumthani, 12120, Thailand
| | - Weerachai Pipatrattanaseree
- Regional Medical Science Center 12 Songkhla, Department of Medical Sciences, Ministry of Public Health, Songkhla, 90100, Thailand
| | - Chonthicha Kongkwamcharoen
- Graduate School of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Neal M. Davies
- Faculty of Pharmacy and Pharmaceutical Sciences, Katz Centre for Pharmacy and Health Research, University of Alberta, Edmonton, Alberta T6G2E1, Canada
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Banahene JCM, Ofosu IW, Odai BT. Surveillance of ochratoxin A in cocoa beans from cocoa-growing regions of Ghana. Heliyon 2023; 9:e18206. [PMID: 37501961 PMCID: PMC10368851 DOI: 10.1016/j.heliyon.2023.e18206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 07/29/2023] Open
Abstract
Cocoa is one of the agricultural commodities which is highly susceptible to mycotoxin contamination. During two crop/harvest seasons, the occurrence and distribution of ochratoxin A (OTA) in viable commercial cocoa beans were investigated. The cocoa bean samples were collected randomly from farmers across cocoa-growing regions of Ghana. OTA concentrations in the samples were determined by liquid chromatography-tandem mass spectrometry (LC-MS/MS) methods following purification on immunoaffinity solid phase column. The result showed that 21.7% of all samples analyzed were contaminated with OTA at concentrations ranging from 0.01 μg/kg to 12.36 μg/kg. The Western South region had the highest occurrence of OTA-positive samples at 32.5%, followed by the Western North region at 28.75%, the Eastern and Volta regions at 25% each, Brong Ahafo (16.25%), Central (15%) and the Ashanti region at 11.25%. However, 0.9% and 3.5% of the total OTA-positive samples exceeded the OTA maximum limits of 10 μg/kg for cocoa beans and 3 μg/kg for cocoa powder, set by the Brazilian National Health Surveillance Agency and the European Commission, respectively. During the Main and Light crop seasons, the highest concentrations of OTA were detected in the Western North region, reaching up to 12.36 μg/kg and 3.45 μg/kg, respectively. OTA concentrations between the cocoa-growing regions in the Main crop season were not significantly different (p > 0.05), however, the Light crop season indicated a significant difference (p < 0.05). There was a significant difference (p < 0.05) between the two crop seasons. The need for regular monitoring and careful adherence to agronomic strategies such as good agricultural practices (GAPs), recommended code of practices (COPs) and good manufacturing practices (GMPs) for the prevention and reduction of OTA throughout the cocoa value chain cannot be overemphasized.
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Affiliation(s)
- Joel Cox Menka Banahene
- Department of Food Science and Technology, Kwame Nkrumah University of Science and Technology, Kumasi, Ashanti, Ghana
- Research Department, Quality Control Company Limited – Ghana Cocoa Board, Tema, Greater Accra, Ghana
| | - Isaac Williams Ofosu
- Department of Food Science and Technology, Kwame Nkrumah University of Science and Technology, Kumasi, Ashanti, Ghana
| | - Bernard Tawiah Odai
- Radiation Technology Centre - BNARI, Ghana Atomic Energy Commission, Kwabenya, Accra, Ghana
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Lee SJ, Han X, Men X, Oh G, Choi SI, Lee OH. Improvement of analytical method for three azo dyes in processed milk and cheese using HPLC-PDA. Food Chem X 2023; 18:100713. [PMID: 37397211 PMCID: PMC10314154 DOI: 10.1016/j.fochx.2023.100713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 07/04/2023] Open
Abstract
This study aims to develop and validate a method for simultaneously measuring three azo dyes (azorubine, brilliant black BN, lithol rubine BK) not designated in Korea. The HPLC-PDA analysis method was validated based on the ICH guidelines, and the color stability was evaluated. The milk and cheese samples were spiked with azo dyes, the correlation coefficient of calibration curve ranged from 0.999 to 1.000 and the recovery rates of azo dyes were 98.81 ∼ 115.94%, with RSD of 0.08 ∼ 3.71%. The LOD and the LOQ in milk and cheese ranged from 1.14 to 1.73 μg/mL and 3.46 to 5.25 μg/mL, respectively. In addition, the expanded uncertainties of the measurements ranged from 3.3421 to 3.8146%. The azo dyes appeared to be color stable for more than 14 days. The results indicate that this analytical method is suitable for extracting and analyzing azo dyes in milk and cheese samples, which are not permitted in Korea.
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Affiliation(s)
- Se-Jeong Lee
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Xionggao Han
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Xiao Men
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Geon Oh
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Sun-Il Choi
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
- Agricultural and Life Sciences Research Institute, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Ok-Hwan Lee
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
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