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Wang Y, Li H, Wang D, Li Y, Shen Y, Fu Y, Li Y, Gao M, Zhang D. Changes of PK/PD of Meropenem in patients with abdominal septic shock and exploration of clinical rational administration plan: a prospective exploratory study. Sci Rep 2024; 14:10173. [PMID: 38702351 PMCID: PMC11068909 DOI: 10.1038/s41598-024-60909-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 04/29/2024] [Indexed: 05/06/2024] Open
Abstract
This study aimed to explore the changes of pharmacokinetic parameters after meropenem in patients with abdominal septic shock after gastrointestinal perforation, and to simulate the probability of different dosing regimens achieving different pharmacodynamic goals. The study included 12 patients, and utilized high performance liquid chromatography-tandem mass spectrometry to monitor the plasma concentration of meropenem. The probability of target attainment (PTA) for different minimum inhibitory concentration (MIC) values and %fT > 4MIC was compared among simulated dosing regimens. The results showed that in 96 blood samples from 12 patients, the clearance (CL) of meropenem in the normal and abnormal creatinine clearance subgroups were 7.7 ± 1.8 and 4.4 ± 1.1 L/h, respectively, and the apparent volume of distribution (Vd) was 22.6 ± 5.1 and 17.2 ± 5.8 L, respectively. 2. Regardless of the subgroup, 0.5 g/q6h infusion over 6 h regimen achieved a PTA > 90% when MIC ≤ 0.5 mg/L. 1.0 g/q6h infusion regimen compared with other regimen, in most cases, the probability of making PTA > 90% is higher. For patients at low MIC, 0.5 g/q6h infusion over 6 h may be preferable. For patients at high MIC, a dose regimen of 1.0 g/q6 h infusion over 6 h may be preferable. Further research is needed to confirm this exploratory result.
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Affiliation(s)
- Youquan Wang
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | - Hongxiang Li
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | - Dongxia Wang
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | - Yuting Li
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | | | - Yao Fu
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | - Yanhua Li
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | - Meng Gao
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China
| | - Dong Zhang
- Department of Critical Care Medicine, The First Hospital of Jilin University, Chaoyang District, Changchun City, 130021, Jilin Province, China.
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2
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Phipps WS, Kilgore MR, Kennedy JJ, Whiteaker JR, Hoofnagle AN, Paulovich AG. Clinical Proteomics for Solid Organ Tissues. Mol Cell Proteomics 2023; 22:100648. [PMID: 37730181 PMCID: PMC10692389 DOI: 10.1016/j.mcpro.2023.100648] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 09/07/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023] Open
Abstract
The evaluation of biopsied solid organ tissue has long relied on visual examination using a microscope. Immunohistochemistry is critical in this process, labeling and detecting cell lineage markers and therapeutic targets. However, while the practice of immunohistochemistry has reshaped diagnostic pathology and facilitated improvements in cancer treatment, it has also been subject to pervasive challenges with respect to standardization and reproducibility. Efforts are ongoing to improve immunohistochemistry, but for some applications, the benefit of such initiatives could be impeded by its reliance on monospecific antibody-protein reagents and limited multiplexing capacity. This perspective surveys the relevant challenges facing traditional immunohistochemistry and describes how mass spectrometry, particularly liquid chromatography-tandem mass spectrometry, could help alleviate problems. In particular, targeted mass spectrometry assays could facilitate measurements of individual proteins or analyte panels, using internal standards for more robust quantification and improved interlaboratory reproducibility. Meanwhile, untargeted mass spectrometry, showcased to date clinically in the form of amyloid typing, is inherently multiplexed, facilitating the detection and crude quantification of 100s to 1000s of proteins in a single analysis. Further, data-independent acquisition has yet to be applied in clinical practice, but offers particular strengths that could appeal to clinical users. Finally, we discuss the guidance that is needed to facilitate broader utilization in clinical environments and achieve standardization.
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Affiliation(s)
- William S Phipps
- Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Mark R Kilgore
- Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Jacob J Kennedy
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Jeffrey R Whiteaker
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Andrew N Hoofnagle
- Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle, Washington, USA; Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA.
| | - Amanda G Paulovich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA; Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA.
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Morikawa G, Fukami K, Moriiwa Y, Okazawa K, Yanagida A. Evaluation of the clinical and quantitative performance of a practical HPLC-UV platform for in-hospital routine therapeutic drug monitoring of multiple drugs. J Pharm Health Care Sci 2023; 9:29. [PMID: 37777811 PMCID: PMC10544152 DOI: 10.1186/s40780-023-00298-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/22/2023] [Indexed: 10/02/2023] Open
Abstract
BACKGROUND In-hospital therapeutic drug monitoring (TDM) requires a suitable quantification method for target drugs from the viewpoint of precision, throughput, and testing costs. We previously developed a practical HPLC-UV platform for quantification of serum levels of various drugs. In this report, the platform was effectively applied to the quantification of patient serum levels of five different drugs by clinical professionals in our hospital during their daily work. METHODS The residual sera of patients receiving carbamazepine (CBZ), phenytoin (PHT), lamotrigine (LTG), vancomycin (VCM), or voriconazole (VRCZ) were used in the present clinical study. The quantification method for each drug consisted of rapid solid-phase extraction (SPE) of each drug in the patient serum, followed by optimized HPLC-UV analysis of the drug in the SPE eluate. Furthermore, patient serum levels of PHT, CBZ, and VCM were also measured by ligand-binding assay using a cobas® analyzer in our hospital, and those of LTG and VRCZ were measured by HPLC-MS/MS at an outsourced provider. Passing-Bablok regression analysis and Bland-Altman analysis were employed to analyze the agreement of drug levels in patient sera, which was separately quantified using two different methods-our HPLC-UV platform and the cobas analyzer, or HPLC-UV and HPLC-MS/MS. RESULTS All analytical conditions of the present method using our HPLC-UV platform were well optimized for each target drug quantification in the patient's serum, and the quantification method for each drug was fully validated for accuracy, precision and reproducibility. Furthermore, Passing-Bablok regression analysis and Bland-Altman analysis revealed that patient serum levels of PHT, CBZ, and VCM quantified by our HPLC-UV platform were closely correlated with those quantified by the cobas® analyzer, and the levels of LTG and VRCZ quantified by our HPLC-UV platform were also correlated with those quantified by HPLC-MS/MS. CONCLUSIONS Our HPLC-UV platform can be performed without requiring special analytical techniques. This platform is expected to be used for the measurement of blood levels of multiple drugs for in-hospital routine TDM.
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Affiliation(s)
- Go Morikawa
- Department of Pharmacy, Hokushin General Hospital, 1-5-63, Nishi, Nakano, Nagano, 383-8505, Japan.
| | - Kazuto Fukami
- Department of Clinical laboratory, Hokushin General Hospital, 1-5-63, Nishi, Nakano, Nagano, 383-8505, Japan
| | - Yukiko Moriiwa
- Department of Biomedical Analysis, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Katsuko Okazawa
- Department of Pharmacy, Hokushin General Hospital, 1-5-63, Nishi, Nakano, Nagano, 383-8505, Japan
| | - Akio Yanagida
- Department of Biomedical Analysis, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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Lentjes EGWM, Bui HN, Ruhaak LR, Kema IP, Coene KLM, van den Ouweland JMW. LC-MS/MS in Clinical Chemistry: did it live up to its promise?: Consideration from the Dutch EQAS organisation. Clin Chim Acta 2023; 546:117391. [PMID: 37196897 DOI: 10.1016/j.cca.2023.117391] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Over the past decade the use of LC-MS/MS has increased significantly in the hospital laboratories. Clinical laboratories have switched from immunoassays to LC-MS/MS methods due to the promise of improvements in sensitivity and specificity, better standardization with often non-commutable international standards, and better between-laboratory comparison. However, it remains unclear whether routine performance of the LC-MS/MS methods have met these expectations. METHOD This study examined the EQAS results, from the Dutch SKML, of serum cortisol, testosterone, 25OH-vitaminD and cortisol in urine and saliva over 9 surveys (2020 to first half of 2021). RESULTS The study found a significant increase in the number of compounds and in the number of results measured in the different matrices, with LC-MS/MS over a period of eleven years. In 2021, approximately 4000 LC-MS/MS results were submitted (serum: urine: saliva = 58:31:11%) compared to only 34 in 2010. When compared to the individual immunoassays, the LC-MS/MS based methods for serum cortisol, testosterone and 25OH-vitaminD showed comparable but also higher between-laboratory CVs in different samples of the surveys. For cortisol, testosterone and 25OH-vitaminD the median CV was 6.8%, 6.1% and 4.7% respectively for the LC-MS/MS compared to 3.9-8.0%,4.5-6.7%, and 7.5-18.3% for immunoassays. However, the bias and imprecision of the LC-MS/MS was better than that of the immunoassays. CONCLUSION Despite the expectation that LC-MS/MS methods would result in smaller between-laboratory differences, as they are relatively matrix independent and better to standardize, the results of the SKML round robins do not reflect this for some analytes and may be in part explained by the fact that in most cases laboratory developed tests were used.
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Affiliation(s)
- E G W M Lentjes
- Central Diagnostic Laboratory, University Medical Center Utrecht, The Netherlands.
| | - H N Bui
- Clinical Chemistry , Reinier de Graaf Groep Diagnostisch Centrum SSDZ, The Netherlands
| | - L R Ruhaak
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, The Netherlands
| | - I P Kema
- Department of Laboratory Medicine, University Medical Center Groningen, the Netherlands
| | - K L M Coene
- Laboratory of Clinical Chemistry & Hematology, Elisabeth TweeSteden Hospital, Tilburg, the Netherlands
| | - J M W van den Ouweland
- Department of Clinical Chemistry, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands
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Chen Y, Yang Y, Xu S, Wang C, Shu P, Zhang X, Huang Q, Kim JS, Jiao Z. Model Informed Development of SIM0295 in Patients with Gout and Hyperuricemia and Healthy Volunteers Using a Population Pharmacokinetics/ Pharmacodynamics Approach. Expert Opin Investig Drugs 2023:1-10. [PMID: 37183631 DOI: 10.1080/13543784.2023.2212153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
BACKGROUND SIM0295, a novel inhibitor of human uric acid transporter 1 (hURAT1), is used to treat patients with gout and hyperuricemia. This study aimed to develop population pharmacokinetics and pharmacodynamics (popPK/PD) models of SIM0295 and explore potential covariates to inform clinical drug development. RESEARCH DESIGN AND METHODS Data were obtained from four phase I studies conducted in healthy Korean and Chinese subjects and two phase II studies conducted in Korean patients with gout and hyperuricemia. The popPK/PD model of SIM0295 was developed using nonlinear mixed effects modeling. RESULTS SIM0295 pharmacokinetics was described using a two-compartment model with the absorption of four transit compartments and first-order elimination. PK parameters were normalized to weight via allometric scaling. Food was identified as a factor significantly affecting the absorption rate, with no clinical relevance. The sigmoid Emax model with a semi-mechanism of inhibition of serum uric acid (sUA) reabsorption was used to describe the exposure-response relationship. Additionally, Monte Carlo simulations demonstrated that approimately 9 mg/day of SIM0295 for 7 days could achieve the maximum decrease in sUA. CONCLUSION The established popPK/PD model characterized the dose-exposure-response relationship for SIM0295 in healthy subjects and patients with gout and hyperuricemia and could be used to inform the drug development.
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Affiliation(s)
- Yueting Chen
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Yang
- Jiangsu Simcere Pharmaceutical Co. Ltd, Nanjing, China
| | - Shansen Xu
- Jiangsu Simcere Pharmaceutical Co. Ltd, Nanjing, China
| | - Chenyu Wang
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pan Shu
- Jiangsu Simcere Pharmaceutical Co. Ltd, Nanjing, China
| | - Xiaoyu Zhang
- Jiangsu Simcere Pharmaceutical Co. Ltd, Nanjing, China
| | - Qin Huang
- Jiangsu Simcere Pharmaceutical Co. Ltd, Nanjing, China
| | - Jin Sook Kim
- JW Pharmaceutical Corporation, Seoul, Korea, Republic of South
| | - Zheng Jiao
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Cortés Giménez-Coral A, Rodríguez-González P, González Gago A, Cernuda Morollón E, Lopez-Cancio E, Prieto García B, García Alonso JI. Comparison between one and two-dimensional liquid chromatographic approaches for the determination of plasmatic stroke biomarkers by isotope dilution and tandem mass spectrometry. Analyst 2023; 148:583-593. [PMID: 36594438 DOI: 10.1039/d2an01750d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This work presents the evaluation of one- and two-dimensional liquid chromatography for the quantification of three stroke outcome predictors in plasma. Isotopically labelled analogues of L-arginine (L-Arg), asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA) are used to quantify the three analytes by isotope dilution and tandem mass spectrometry. Chromatographic isotope effects were not observed between natural L-Arg and its 15N-labelled analogue but they were observed between natural ADMA and SDMA and their multiple deuterated analogues. Under these conditions, bidimensional chromatography through the use of an automated multiple heart cutting mode provided unsatisfactory results for ADMA and SDMA due to the different amounts of natural and labelled compounds transferred from the first to the second chromatographic dimension. In contrast, using one dimensional liquid chromatography after a derivatization step to esterify carboxylic groups, chromatographic isotope effects did not alter the initial mass balance as full coelution of natural and labelled analogues or baseline resolution between the analytes was not required. This method was successfully validated following the Clinical & Laboratory Standards Institute guidelines and applied to the analysis of plasma samples from patients who had suffered from an intraparenchymal haemorrhagic stroke.
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Affiliation(s)
- Adela Cortés Giménez-Coral
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain. .,Clinical Biochemistry, Laboratory of Medicine, Central University Hospital of Asturias, Oviedo, 33011, Spain
| | - Pablo Rodríguez-González
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
| | - Adriana González Gago
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
| | - Eva Cernuda Morollón
- Clinical Biochemistry, Laboratory of Medicine, Central University Hospital of Asturias, Oviedo, 33011, Spain
| | - Elena Lopez-Cancio
- Department of Neurology, Central University Hospital of Asturias, 33011 Oviedo, Spain
| | - Belén Prieto García
- Clinical Biochemistry, Laboratory of Medicine, Central University Hospital of Asturias, Oviedo, 33011, Spain
| | - J Ignacio García Alonso
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
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Gent R, Barbier ID, Atkin SL, Newell-Fugate AE, Swart AC. Ultra-performance convergence chromatography tandem mass spectrometry analysis of adrenal and gonadal steroid hormones in southern white rhinoceros(Ceratotherium simum simum) faeces and serum. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1215:123576. [PMID: 36529070 DOI: 10.1016/j.jchromb.2022.123576] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/04/2022] [Accepted: 12/10/2022] [Indexed: 12/14/2022]
Abstract
Steroid hormone analysis is routinely undertaken in the assessment of stress response and reproductive function in the management of both captive and free-ranging wildlife species. Faecal samples have become the preferred sample type for analysis as collection is non-invasive and easily assessable. These investigations are generally aimed at aiding successful translocations, enhanced survival outcomes in captivity and improvement of reproductive rate. Immunoassays are the most common approach in the analysis of hormones, particularly in the case of the southern white rhinoceros (Ceratotherium simum simum). Non-specificity, attributed to structural similarity of steroid metabolites impedes accurate evaluations which can be eliminated by chromatographic techniques which are more specific, selective and provide comprehensive analyses. This study developed and validated three methods using ultra-performance convergence chromatography tandem mass spectrometry for the assessment of classical androgens, progestogens and adrenal steroids, as well as the C11-oxy androgens and C11-oxy progestogens in serum and faeces from white rhinoceros. The limit of detection and quantification were determined for each steroid, parameters such as accuracy (<19.8 % RSD) and precision (<20.2 % RSD) were established with recovery, matrix effect, and process efficiency within acceptable limits. Subsequent analysis of serum and faecal samples from five white rhinoceros identified novel steroids for the first time in this species. In addition to the classical adrenal steroids, the following C11-oxy steroids were detected in faecal samples: 11α-hydroxydihydroprogesterone (168 ng/g), 11α-hydroxyprogesterone (125.9 ng/g), 11β-hydroxyprogesterone (210.2 ng/g) and 11-ketoandrostenedione (3.3-19.6 ng/g) with 11-deoxycortisol being the major glucocorticoid (24.2-67.3 ng/g) together with 21-deoxycortisone (40.7 ng/g) and deoxycorticosterone (7.6-14.6 ng/g). In serum samples 11β-hydroxyandrostenedione (0.35-2.34 ng/mL) and 11β-hydroxytestosterone (0.18-1.62 ng/mL) were the predominant androgens with cortisol (5.8-20.5 ng/mL), the predominant glucocorticoid, while corticosterone, 18-hydroxycorticosterone and aldosterone were also detected. These methods can be applied independently to assess either androgens, progestogens, or adrenal steroid panels or in combination to assess the cohort of gonadal and adrenal steroids in faeces and/or serum, in southern white rhinoceros as well as other wildlife species. Analysis would enable the accurate assessment of reproductive health and stress responses while also distinguishing between stress and distress thus contributing to the conservation of wildlife species.
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Affiliation(s)
- Rachelle Gent
- Department of Biochemistry, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Inge D Barbier
- Department of Biochemistry, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Stephen L Atkin
- Royal College of Surgeons in Ireland Bahrain, Adliya, Bahrain
| | - Annie E Newell-Fugate
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, TX 77843, United States
| | - Amanda C Swart
- Department of Biochemistry, Stellenbosch University, Stellenbosch 7600, South Africa; Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch 7600, South Africa.
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Man ISC, Shao R, Hou WK, Xin Li S, Liu FY, Lee M, Wing YK, Yau SY, Lee TMC. Multi-systemic evaluation of biological and emotional responses to the Trier Social Stress Test: A meta-analysis and systematic review. Front Neuroendocrinol 2023; 68:101050. [PMID: 36410619 DOI: 10.1016/j.yfrne.2022.101050] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/28/2022] [Accepted: 11/13/2022] [Indexed: 11/19/2022]
Abstract
Humans experience multiple biological and emotional changes under acute stress. Adopting a multi-systemic approach, we summarized 61 studies on healthy people's endocrinological, physiological, immunological and emotional responses to the Trier Social Stress Test. We found salivary cortisol and negative mood states were the most sensitive markers to acute stress and recovery. Biomarkers such as heart rate and salivary alpha-amylase also showed sensitivity to acute stress, but the numbers of studies were small. Other endocrinological (e.g., dehydroepiandrosterone), inflammatory (C-Reactive Protein, Interleukin-6) and physiological (e.g., skin conductance level) measures received modest support as acute stress markers. Salivary cortisol showed some associations with mood measures (e.g., state anxiety) during acute stress and recovery, and heart rate showed preliminary positive relationship with calmness ratings during response to TSST, but the overall evidence was mixed. While further research is needed, these findings provide updated and comprehensive knowledge on the integrated psychobiological response profiles to TSST.
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Affiliation(s)
- Idy S C Man
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, China; Laboratory of Neuropsychology and Human Neuroscience, The University of Hong Kong, Hong Kong, China
| | - Robin Shao
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, China; Laboratory of Neuropsychology and Human Neuroscience, The University of Hong Kong, Hong Kong, China; Department of Affective Disorders, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - W K Hou
- Department of Psychology, The Education University of Hong Kong, Hong Kong, China; Centre for Psychosocial Health, The Education University of Hong Kong, Hong Kong, China
| | - Shirley Xin Li
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, China; Sleep Research Clinic and Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong, China
| | - Fiona Yan Liu
- Department of Computing, The Hong Kong Polytechnic University, Hong Kong, China
| | - Maggy Lee
- Department of Sociology, The University of Hong Kong, Hong Kong, China
| | - Yun Kwok Wing
- Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Suk-Yu Yau
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, China; Mental Health Research Center, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Tatia M C Lee
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, China; Laboratory of Neuropsychology and Human Neuroscience, The University of Hong Kong, Hong Kong, China.
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9
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Zhao YT, Dai HR, Li Y, Zhang YY, Guo HL, Ding XS, Hu YH, Chen F. Comparison of LC-MS/MS and EMIT methods for the precise determination of blood sirolimus in children with vascular anomalies. Front Pharmacol 2022; 13:925018. [PMID: 36147342 PMCID: PMC9486013 DOI: 10.3389/fphar.2022.925018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Sirolimus (SRL) is a mammalian target of rapamycin (mTOR) inhibitor. The whole blood concentration of SRL is routinely monitored to tailor dosage and prevent toxicity. Currently, the enzyme multiplied immunoassay technique (EMIT) is often applied to perform therapeutic drug monitoring (TDM) of SRL, but the cross-reactivity with various metabolites is of great concern. A more specific method is required, such as liquid chromatography–tandem mass spectrometry (LC-MS/MS). However, no study on the method comparison of the EMIT and LC-MS/MS for the measurement of whole blood SRL concentration in children with vascular anomalies has been reported. This study developed a simple and sensitive LC-MS/MS assay for the determination of SRL. Meanwhile, consistency between LC-MS/MS and the EMIT was evaluated by linear regression and Bland–Altman analysis. Whole blood samples were deproteinized with methanol for erythrocyte lysis, and the resulting solution was injected into the LC-MS/MS system using the positive electrospray ionization mode. The multiple reaction monitoring transitions of m/z 931.7 → 864.6 and m/z 934.7 → 864.6 were used for SRL and SRL-d3 as the internal standards, respectively. The analytes were separated on a C18 column with a gradient mobile phase (0.1 mM formic acid and 0.05 mM ammonium acetate in methanol/ultrapure water). Blood samples collected from children with vascular anomalies undergoing SRL therapy were tested by EMIT and by LC-MS/MS. The linear range of LC-MS/MS was 0.500–50.0 ng/ml and that of the EMIT was 3.50–30.0 ng/ml. A significant positive correlation between the two assays was established with a regression equation described as [EMIT] = 1.281 × [LC−MS/MS] + 2.450 (r = 0.8361). Bland–Altman plots showed a mean concentration overestimation of 4.7 ng/ml [95% CI: (−3.1, 12.6)] and a positive bias of 63.1% [95% CI: (−36.1, 162.3)] generated by the EMIT more than that of by LC-MS/MS. In conclusion, the two methods were closely correlated, indicating that switching between the two methods is feasible. Considering the overestimation nature of the EMIT assay, switching from the EMIT to the LC-MS/MS method deserves close attention and necessary re-evaluation for the target therapeutic reference range, may be required when methods are switched within the same clinical laboratory or results are compared between different laboratories.
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Affiliation(s)
- Yue-Tao Zhao
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Hao-Ran Dai
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Yue Li
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Yuan-Yuan Zhang
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Hong-Li Guo
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Xuan-Sheng Ding
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Ya-Hui Hu
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Ya-Hui Hu, ; Feng Chen,
| | - Feng Chen
- Pharmaceutical Sciences Research Center, Department of Pharmacy, Children’s Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Ya-Hui Hu, ; Feng Chen,
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10
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Rappold BA. Review of the Use of Liquid Chromatography-Tandem Mass Spectrometry in Clinical Laboratories: Part II-Operations. Ann Lab Med 2022; 42:531-557. [PMID: 35470272 PMCID: PMC9057814 DOI: 10.3343/alm.2022.42.5.531] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/08/2022] [Accepted: 04/13/2022] [Indexed: 11/19/2022] Open
Abstract
Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is increasingly utilized in clinical laboratories because it has advantages in terms of specificity and sensitivity over other analytical technologies. These advantages come with additional responsibilities and challenges given that many assays and platforms are not provided to laboratories as a single kit or device. The skills, staff, and assays used in LC-MS/MS are internally developed by the laboratory, with relatively few exceptions. Hence, a laboratory that deploys LC-MS/MS assays must be conscientious of the practices and procedures adopted to overcome the challenges associated with the technology. This review discusses the post-development landscape of LC-MS/MS assays, including validation, quality assurance, operations, and troubleshooting. The content knowledge of LC-MS/MS users is quite broad and deep and spans multiple scientific fields, including biology, clinical chemistry, chromatography, engineering, and MS. However, there are no formal academic programs or specific literature to train laboratory staff on the fundamentals of LC-MS/MS beyond the reports on method development. Therefore, depending on their experience level, some readers may be familiar with aspects of the laboratory practices described herein, while others may be not. This review endeavors to assemble aspects of LC-MS/MS operations in the clinical laboratory to provide a framework for the thoughtful development and execution of LC-MS/MS applications.
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Affiliation(s)
- Brian A Rappold
- Laboratory Corporation of America Holdings, Research Triangle Park, NC, USA
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11
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A Second-generation Opioid LC-MS/MS Assay Improves Laboratory Workflow and Capacity. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1210:123438. [DOI: 10.1016/j.jchromb.2022.123438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/04/2022] [Accepted: 08/25/2022] [Indexed: 11/24/2022]
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12
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Chen HC, Chen YY, Chao MR, Chang YZ. Validation of a high-throughput method for simultaneous determination of areca nut and tobacco biomarkers in hair using microwave-assisted extraction and isotope dilution liquid chromatography tandem mass spectrometry. J Pharm Biomed Anal 2022; 216:114775. [PMID: 35490505 DOI: 10.1016/j.jpba.2022.114775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/10/2022] [Accepted: 04/15/2022] [Indexed: 11/26/2022]
Abstract
For people with habits of chewing betel nuts and smoking, the probability of suffering from oral cancer is ten to a hundred times higher than others. Due to the serious health consequences of areca nut and tobacco, a reliable cessation program is needed. Hair is the best option to document long-term exposure. Unfortunately, the research on betel nut in hair did not attract much attention. In this study, a high-throughput method based on microwave-assisted extraction (MAE) and isotope dilution liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed to measure the four biomarkers of betel nuts and cigarettes, including areca alkaloids (arecoline), tobacco alkaloids (nicotine), and their metabolites (arecaidine and cotinine). The hair sample was washed, cut, weighed, and incubated for 3 min MAE with methanol/trifluoroacetic acid, then evaporated and reconstituted for LC-MS/MS analysis. The total experiment time was 50 min. The lower limits of quantification (LOQ) were 5-10 pg/mg. The intra-day and inter-day precision were 2.2-7.6%. Intra-day and inter-day accuracy were - 6.1-8.2%. The method showed good linearity (r2 > 0.995) over LOQ - 1000 pg/mg concentration ranges. It was successfully applied to analyze 11 subjects of regular areca nut chewers, also smokers. Eight samples were black hair; three samples were naturally black hair with partially gray hair. Measured concentrations in black hair were in the range 56.9 pg/mg to 3.2 ng/mg for arecoline, 12.8 pg/mg to 222.2 pg/mg for arecaidine, 3.8 ng/mg to 33.4 ng/mg for nicotine and 1.1 ng/mg to 6.1 ng/mg for cotinine. The results showed lower levels in gray hair. This method was utilized successfully to analyze pg/mg levels of arecoline, arecaidine, nicotine, and cotinine, and good recoveries were obtained. The mean concentration of arecaidine and cotinine in hair was 15% and 20% of arecoline and nicotine, respectively. A good positive correlation was found between the concentrations of these compounds and self-report. This method improved extraction speed, concentration, and analysis of samples and is useful for monitoring betel nut and smoking cessation programs.
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Affiliation(s)
- Hsiu-Chuan Chen
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Ya-Yi Chen
- Department of Stomatology, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan
| | - Mu-Rong Chao
- Department of Occupational Safety and Health, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Yan-Zin Chang
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan; Drug Testing Center, Department of Clinical Laboratory, Chung Shan Medical University Hospital, Taichung 40201, Taiwan.
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Sheng K, Jiang H, Fang Y, Wang L, Jiang D. Emerging electrochemical biosensing approaches for detection of allergen in food samples: A review. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.01.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Koomen DC, May JC, McLean JA. Insights and prospects for ion mobility-mass spectrometry in clinical chemistry. Expert Rev Proteomics 2022; 19:17-31. [PMID: 34986717 PMCID: PMC8881341 DOI: 10.1080/14789450.2022.2026218] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Ion mobility-mass spectrometry is an emerging technology in the clinical setting for high throughput and high confidence molecular characterization from complex biological samples. Ion mobility spectrometry can provide isomer separations on the basis of molecular structure, the ability of which is increasing through technological developments that afford enhanced resolving power. Integrating multiple separation dimensions, such as liquid chromatography-ion mobility-mass spectrometry (LC-IM-MS) provide dramatic enhancements in the mitigation of molecular interferences for high accuracy clinical measurements. AREAS COVERED Multidimensional separations with LC-IM-MS provide better selectivity and sensitivity in molecular analysis. Mass spectrometry imaging of tissues to inform spatial molecular distribution is improved by complementary ion mobility analyses. Biomarker identification in surgical environments is enhanced by intraoperative biochemical analysis with mass spectrometry and holds promise for integration with ion mobility spectrometry. New prospects in high resolving power ion mobility are enhancing analysis capabilities, such as distinguishing isomeric compounds. EXPERT OPINION Ion mobility-mass spectrometry holds many prospects for the field of isomer identification, molecular imaging, and intraoperative tumor margin delineation in clinical settings. These advantages are afforded while maintaining fast analysis times and subsequently high throughput. High resolving power ion mobility will enhance these advantages further, in particular for analyses requiring high confidence isobaric selectivity and detection.
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Affiliation(s)
- David C. Koomen
- Department of Chemistry, Center for Innovative Technology, Institute of Chemical Biology, Institute for Integrative Biosystems Research and Education, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN, USA
| | - Jody C. May
- Department of Chemistry, Center for Innovative Technology, Institute of Chemical Biology, Institute for Integrative Biosystems Research and Education, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN, USA
| | - John A. McLean
- Department of Chemistry, Center for Innovative Technology, Institute of Chemical Biology, Institute for Integrative Biosystems Research and Education, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN, USA
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Chen F, Cheng Z, Wang Z, Peng Y, Wang B, Guo W, Pan B. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) based assay for the simultaneous quantification of 18-hydroxycorticosterone, 18-hydroxycortisol and 18-oxocortisol in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1188:123030. [PMID: 34871919 DOI: 10.1016/j.jchromb.2021.123030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/25/2021] [Accepted: 11/07/2021] [Indexed: 10/19/2022]
Abstract
18-hydroxycorticosterone (18-OHB), 18-hydroxycortisol (18-OHF) and 18-oxocortisol (18-OXOF) are important biomarkers for the diagnosis of subtypes of primary aldosteronism. The detection of these three analytes by liquid chromatography-tandem mass spectrometry (LC-MS/MS) is free from structurally similar compounds. The aim of this study was to develop and validate a new LC-MS/MS assay for the simultaneous quantification of 18-OHB, 18-OHF and 18-OXOF in plasma and to establish a reference intervals for apparently healthy population. Plasma samples were prepared by solid phase extraction and separated in an ultra-high performance reversed phase column. MS detection was achieved using a triple quadrupole mass spectrometer in both positive and negative ionization modes. The developed assay was then validated against standard guidelines. We collected 691 plasma samples from apparently healthy individuals (M:398, F:293) to establish the reference intervals. The analytes were separated and quantified within 5 min. The newly developed method demonstrated linearity for the detected steroid concentration in range of 5 to 3000 pg/ml for 18-OXOF (r2 = 0.999) and 20 to 3000 pg/ml for 18-OHB (r2 = 0.997) and 18-OHF (r2 = 0.997). The lower limit of quantification (LLOQ) was 2.5 pg/ml, 20 pg/ml and 20 pg/m for 18-OXOF, 18-OHB and 18-OHF respectively. Specificity, precision, accuracy and stability were tested, and met the requirements of the guidelines. 18-OHB was higher in females than in males, but 18-OHF were higher in males than females. The reference intervals of 18-OHB, 18-OHF and 18-OXOF for both genders together were 90.5-1040.6 pg/ml, 224.4-1685.2 pg/ml, 4.0-70.5 pg/ml, respectively. Age was also an important factor influencing the levels of these three hormones. We have developed a sensitive and reliable method for the simultaneous quantification of 18-OHB, 18-OHF, and 18-OXOF. Our work provides a reference interval for the clinical application of these three steroid hormones.
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Affiliation(s)
- Fangjun Chen
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China
| | - Ziyun Cheng
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China
| | - Zhenxin Wang
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China
| | - Yingfei Peng
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China
| | - Beili Wang
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China
| | - Wei Guo
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China.
| | - Baishen Pan
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032, PR China.
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Karrar E, Ahmed IAM, Manzoor MF, Wei W, Sarpong F, Wang X. Lipid-soluble vitamins from dairy products: Extraction, purification, and analytical techniques. Food Chem 2021; 373:131436. [PMID: 34740052 DOI: 10.1016/j.foodchem.2021.131436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 10/14/2021] [Accepted: 10/17/2021] [Indexed: 12/12/2022]
Abstract
Milk and dairy products are considered as essential sources of lipid-soluble vitamins (LSVs) for human nutrition. Due to the lower concentrations, complexity, and instability of LSVs during extraction, their quantification remains challenging. This review focus on advances in the extraction and quantification of LSVs from different dairy products. Saponification, and liquid-liquid (LLE), solid-phase (SPE), and supercritical fluid (SFE) extraction methods, as well as dispersive liquid-liquid microextraction, are the most common techniques. Liquid chromatography-mass spectrophotometry (LC-MS) has unique advantages for LSVs determination and quantification due to its high sensitivity and specificity.
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Affiliation(s)
- Emad Karrar
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, People's Republic of China
| | - Isam A Mohamed Ahmed
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Muhammad Faisal Manzoor
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, People's Republic of China
| | - Wei Wei
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, People's Republic of China
| | - Frederick Sarpong
- Value Addition Division, Oil Palm Research Institute, Council for Scientific and Industrial Research, Kade, Ghana
| | - Xingguo Wang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, People's Republic of China.
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Fast accurate quantification of salivary cortisol and cortisone in a large-scale clinical stress study by micro-UHPLC-ESI-MS/MS using a surrogate calibrant approach. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1182:122939. [PMID: 34547590 DOI: 10.1016/j.jchromb.2021.122939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 11/23/2022]
Abstract
Cortisol and cortisone are common markers for stress and thus preferentially analyzed in matrices that allow non-invasive sampling such as saliva. Though the major drawback of immunoassays is lack of specificity due to cross reactivities, they are still most commonly used for quantification of steroid hormones. To overcome such problems, sensitive methods based on liquid chromatography-mass spectrometry are becoming more and more accepted as the golden standard for steroid bioanalysis as they achieve accurate quantification at trace levels for multiple analytes in the same run. Along this line, the aim of this study was the development of a new microflow UHPLC-ESI-MS/MS method for the measurement of salivary cortisol and cortisone, which due to its microflow regime provides enhanced sensitivity and is more ecofriendly. The developed method implemented sample preparation by Solid-Phase Extraction (SPE) in a 96-well plate format. Data acquisitions were carried out in MRM (multiple reaction monitoring) mode. The quantitative determination of endogenous compounds in saliva remains a challenge since analyte-free matrix is lacking. Hence, a surrogate calibrant approach with cortisol-d4 andcortisone-13C3 was applied for the target compounds in the presented method. A number of factors were optimized and the method validated. The lower limit of quantitation (LLOQ) was 72 and 62 pg mL-1for cortisol and cortisone, respectively. Linear calibration was achieved in the range from 0.062 to 75.5 ng mL-1for cortisol-d4 and 0.072 to 44 ng mL-1forcortisone-13C3. The performance of the method was also evaluated via proficiency test for salivary cortisol. Finally, it was applied successfully to evaluate cortisol and cortisone concentrations in multiple batches in routine clinical stress study samples (4056 total injections with 1983 study samples). Moreover, the instrument performance (in particular retention time variability) within each batch, between different batches and lot-to-lot of 5 investigated capillary columns over time is described. The work documents that micro-UHPLC-ESI-MS/MS is suitable and robust enough to carry out a full clinical study with greater than 1000s of samples over an extended period if adequate internal standards can be used.
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Development of an antibody-free ID-LC MS method for the quantification of procalcitonin in human serum at sub-microgram per liter level using a peptide-based calibration. Anal Bioanal Chem 2021; 413:4707-4725. [PMID: 33987701 DOI: 10.1007/s00216-021-03361-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/03/2021] [Accepted: 04/16/2021] [Indexed: 10/21/2022]
Abstract
The quantification of low abundant proteins in complex matrices by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) remains challenging. A measurement procedure based on optimized antibody-free sample preparation and isotope dilution coupled to LC-MS/MS was developed to quantify procalcitonin (PCT) in human serum at sub-microgram per liter level. A combination of sodium deoxycholate-assisted protein precipitation with acetonitrile, solid-phase extraction, and trypsin digestion assisted with Tween-20 enhanced the method sensitivity. Linearity was established through peptide-based calibration curves in the serum matrix (0.092-5.222 μg/L of PCT) with a good linear fit (R2 ≥ 0.999). Quality control materials spiked with known amounts of protein-based standards were used to evaluate the method's accuracy. The bias ranged from -2.6 to +4.3%, and the intra-day and inter-day coefficients of variations (CVs) were below 2.2% for peptide-based quality controls. A well-characterized correction factor was determined and applied to compensate for digestion incompleteness and material loss before the internal standards spike. Results with metrological traceability to the SI units were established using standard peptide of well-characterized purity determined by peptide impurity corrected amino acid analysis. The validated method enables accurate quantification of PCT in human serum at a limit of quantification down to 0.245 μg/L (bias -1.9%, precision 9.1%). The method was successfully applied to serum samples obtained from patients with sepsis. Interestingly, the PCT concentration reported implementing the isotope dilution LC-MS/MS method was twofold lower than the concentration provided by an immunoassay.
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Thorsteinsdóttir UA, Thorsteinsdóttir M. Design of experiments for development and optimization of a liquid chromatography coupled to tandem mass spectrometry bioanalytical assay. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4727. [PMID: 33860573 DOI: 10.1002/jms.4727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/15/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Design of experiments (DoE) is a valuable tool for the optimization of quantitative bioanalytical methods utilizing liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). Liquid chromatography mass spectrometry (LC-MS) is composed of several processes, including, liquid introduction and analyte ionization. The goal is to transfer analytes from atmospheric pressure to vacuum and maintain conditions that are compatible for both LC and MS. These processes involve many experimental factors which need to be simultaneously optimized to obtain maximum sensitivity and resolution at minimum retention time. In this tutorial, the basic concepts of DoE will be explained with focus on practical use of DoE. Three case studies optimized with DoE for liquid chromatography tandem mass spectrometry (LC-MS/MS) quantitative assays will then be presented.
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Affiliation(s)
- Unnur Arna Thorsteinsdóttir
- Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland
- ArcticMass ehf., Reykjavík, Iceland
| | - Margrét Thorsteinsdóttir
- Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland
- ArcticMass ehf., Reykjavík, Iceland
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Agretti P, Pelosini C, Bianchi L, Grosso AD, Saba A, Canale D, Sessa MR. Importance of total and measured free testosterone in diagnosis of male hypogonadism: immunoassay versus mass spectrometry in a population of healthy young/middle-aged blood donors. J Endocrinol Invest 2021; 44:321-326. [PMID: 32474765 DOI: 10.1007/s40618-020-01304-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 05/20/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE To meet clinicians' request for adequate results and reliable reference ranges for testosterone, this study was planned with the aims (i) to verify the reliability of the reference interval for total testosterone (TT) declared by immunoassay manufacturer and adopted by laboratory, (ii) to compare results for serum TT obtained by immunoassay and LC-MS/MS and (iii) to verify if the cutoff values for low TT and measured free testosterone (FT), defined by Endocrine Society Guidelines for diagnosis of hypogonadism, are applicable to our study group. METHODS Sera from anonymous young/middle-aged male blood donors were selected for the study. TT was measured by immunoassay and LC-MS/MS. SHBG was measured by immunoassay and used with albumin concentration to calculate FT according to Vermeulen's formula. RESULTS The reference interval declared by the manufacturer and adopted by the lab was validated. The two methods for TT evaluation correlated very well. TT and FT lower limits at 5th and 2.5th percentile are below the cutoffs reported in the literature for the diagnosis of hypogonadism. CONCLUSIONS The immunoassay currently used in our lab can be considered an adequate tool for TT, but it's essential that clinical data agree with the biochemical ones, particularly in the presence of TT values between the lower limit of reference range and the cutoff values recommended by scientific societies.
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Affiliation(s)
- P Agretti
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy.
| | - C Pelosini
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - L Bianchi
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - A Del Grosso
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - A Saba
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Savi 10, 56126, Pisa, Italy
- Laboratory of Clinical Pathology, University Hospital of Pisa, Via Roma 67, 56126, Pisa, Italy
| | - D Canale
- Endocrinology Unit, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - M R Sessa
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
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van Faassen M, van der Veen A, van Ockenburg S, de Jong H, de Vries EGE, Kema IP. Mass spectrometric quantification of urinary 6-sulfatoxymelatonin: age-dependent excretion and biological variation. Clin Chem Lab Med 2021; 59:187-195. [DOI: 10.1515/cclm-2020-0455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 06/23/2020] [Indexed: 11/15/2022]
Abstract
Abstract
Objectives
Regulators of circadian rhythm, including melatonin, influence fundamental biological processes. Measuring the melatonin metabolite 6-sulfatoxymelatonin in urine can estimate melatonin production. 6-sulfatoxymelatonin is mainly analyzed by immunoassays, but these methods are hampered by cross-reactivity and poor reproducibility when used to analyze small molecules. Therefore, we validated a high-throughput liquid chromatography with tandem mass spectrometry (LC–MS/MS) method to quantify 6-sulfatoxymelatonin in urine. We evaluated age-dependent 24-h excretion of 6-sulfatoxymelatonin into urine and the biological variation of urinary excretion in healthy individuals.
Methods
The online solid phase extraction method combined with LC–MS/MS was validated according to international guidelines, and used to measure the excretion of 6-sulfatoxymelatonin into urine of 240 healthy individuals. Biological variation of 6-sulfatoxymelatonin excretion was examined in 10 healthy individuals.
Results
Urinary 6-sulfatoxymelatonin results were well within the validation criteria (interassay coefficient of variation: <5.4%, quantification limit: 0.2 nmol/L). There was an age-related decrease in 6-sulfatoxymelatonin excretion into 24-h urine [F(5, 234)=13.9; p<0.001]. Within-subject variation of 6-sulfatoxymelatonin was 39.2% in day urine, 15.1% in night urine, and 12.2% in 24-h urine. Between-subject variation was 39.1% in day urine, 37.9% in night urine, and 36.8% in 24-h urine.
Conclusions
This MS-based method enables straightforward, reproducible, and sensitive quantification of 6-sulfatoxymelatonin in urine. Urinary 6-sulfatoxymelatonin levels decreased with age. Biological variation of 6-sulfatoxymelatonin excretion into urine was high between subjects and lower within subjects, indicating that repeated measurements of 6-sulfatoxymelatonin in 24-h urine are needed in future studies.
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Affiliation(s)
- Martijn van Faassen
- Department of Laboratory Medicine , University of Groningen, University Medical Center Groningen , Groningen , The Netherlands
| | - Anna van der Veen
- Department of Laboratory Medicine , University of Groningen, University Medical Center Groningen , Groningen , The Netherlands
| | - Sonja van Ockenburg
- Department of Endocrinology , University of Groningen, University Medical Center Groningen , Groningen , The Netherlands
| | - Helma de Jong
- Department of Laboratory Medicine , University of Groningen, University Medical Center Groningen , Groningen , The Netherlands
| | - Elisabeth G. E. de Vries
- Department of Medical Oncology , University Medical Center Groningen, University of Groningen , Groningen , The Netherlands
| | - Ido P. Kema
- Department of Laboratory Medicine , University of Groningen, University Medical Center Groningen , Groningen , The Netherlands
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Caminati G, Procacci P. Mounting evidence of FKBP12 implication in neurodegeneration. Neural Regen Res 2020; 15:2195-2202. [PMID: 32594030 PMCID: PMC7749462 DOI: 10.4103/1673-5374.284980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/18/2020] [Accepted: 03/24/2020] [Indexed: 12/25/2022] Open
Abstract
Intrinsically disordered proteins, such as tau or α-synuclein, have long been associated with a dysfunctional role in neurodegenerative diseases. In Alzheimer's and Parkinson's' diseases, these proteins, sharing a common chemical-physical pattern with alternating hydrophobic and hydrophilic domains rich in prolines, abnormally aggregate in tangles in the brain leading to progressive loss of neurons. In this review, we present an overview linking the studies on the implication of the peptidyl-prolyl isomerase domain of immunophilins, and notably FKBP12, to a variety of neurodegenerative diseases, focusing on the molecular origin of such a role. The involvement of FKBP12 dysregulation in the aberrant aggregation of disordered proteins pinpoints this protein as a possible therapeutic target and, at the same time, as a predictive biomarker for early diagnosis in neurodegeneration, calling for the development of reliable, fast and cost-effective detection methods in body fluids for community-based screening campaigns.
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Affiliation(s)
- Gabriella Caminati
- Department of Chemistry “Ugo Schiff”, University of Florence, Sesto Fiorentino, Italy
- Center for Colloid and Surface Science (CSGI), University of Florence, Sesto Fiorentino, Italy
| | - Piero Procacci
- Department of Chemistry “Ugo Schiff”, University of Florence, Sesto Fiorentino, Italy
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Ponzetto F, Settanni F, Parasiliti-Caprino M, Rumbolo F, Nonnato A, Ricciardo M, Amante E, Priolo G, Vitali S, Anfossi L, Arvat E, Ghigo E, Giordano R, Mengozzi G. Reference ranges of late-night salivary cortisol and cortisone measured by LC-MS/MS and accuracy for the diagnosis of Cushing's syndrome. J Endocrinol Invest 2020; 43:1797-1806. [PMID: 32772255 DOI: 10.1007/s40618-020-01388-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/02/2020] [Indexed: 01/09/2023]
Abstract
PURPOSE International guidelines recommend salivary cortisol for the diagnosis of Cushing's syndrome. Despite mass spectrometry-based assays are considered the analytical gold-standard, there is still the need to define reference intervals and diagnostic accuracy of such methodology. METHODS 100 healthy volunteers and 50 consecutive patients were enrolled to compare LC-MS/MS and electrochemiluminescence assay for the determination of late-night salivary cortisol and cortisone. Moreover, we aimed to determine reference intervals of salivary steroids in a population of healthy individuals and diagnostic accuracy in patients with suspected hypercortisolism and in a population including also healthy individuals. RESULTS Method comparison highlighted a positive bias (51.8%) of immunoassay over LC-MS/MS. Reference intervals of salivary cortisol (0.17-0.97 µg/L), cortisone (0.84-4.85 µg/L) and ratio (0.08-0.30) were obtained. The most accurate thresholds of salivary cortisol for the diagnosis of hypercortisolism were 1.15 µg/L in the population with suspected hypercortisolism (AUC 1) and 1.30 µg/L in the population including also healthy individuals (AUC 1). Cut-off values of salivary cortisone (7.23 µg/L; Se 92.9%, Sp 97.2%, AUC 0.960 and Se 92.9%, Sp 99.1%, AUC 0.985 in suspected hypercortisolism and in overall population, respectively) and cortisol-to-cortisone ratio (0.20; Se 85.7%, Sp 80.6%, AUC 0.820 and Se 85.7%, Sp 85.5%, AUC 0.855 in suspected hypercortisolism and in overall population, respectively) were accurate and similar in both populations. CONCLUSION LC-MS/MS is the most accurate analytical platform for measuring salivary steroids. Obtained reference intervals are coherent with previously published data and diagnostic accuracy for diagnosis of overt hypercortisolism proved highly satisfactory.
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Affiliation(s)
- F Ponzetto
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy
| | - F Settanni
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - M Parasiliti-Caprino
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy.
| | - F Rumbolo
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - A Nonnato
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - M Ricciardo
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - E Amante
- Department of Chemistry, University of Turin, Turin, Italy
| | - G Priolo
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - S Vitali
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - L Anfossi
- Department of Chemistry, University of Turin, Turin, Italy
| | - E Arvat
- Oncologic Endocrinology, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - E Ghigo
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy
| | - R Giordano
- Department of Biological and Clinical Sciences, University of Turin, Turin, Italy
| | - G Mengozzi
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
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24
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Mégarbane B, Oberlin M, Alvarez JC, Balen F, Beaune S, Bédry R, Chauvin A, Claudet I, Danel V, Debaty G, Delahaye A, Deye N, Gaulier JM, Grossenbacher F, Hantson P, Jacobs F, Jaffal K, Labadie M, Labat L, Langrand J, Lapostolle F, Le Conte P, Maignan M, Nisse P, Sauder P, Tournoud C, Vodovar D, Voicu S, Claret PG, Cerf C. Management of pharmaceutical and recreational drug poisoning. Ann Intensive Care 2020; 10:157. [PMID: 33226502 PMCID: PMC7683636 DOI: 10.1186/s13613-020-00762-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 10/09/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Poisoning is one of the leading causes of admission to the emergency department and intensive care unit. A large number of epidemiological changes have occurred over the last years such as the exponential growth of new synthetic psychoactive substances. Major progress has also been made in analytical screening and assays, enabling the clinicians to rapidly obtain a definite diagnosis. METHODS A committee composed of 30 experts from five scientific societies, the Société de Réanimation de Langue Française (SRLF), the Société Française de Médecine d'Urgence (SFMU), the Société de Toxicologie Clinique (STC), the Société Française de Toxicologie Analytique (SFTA) and the Groupe Francophone de Réanimation et d'Urgences Pédiatriques (GFRUP) evaluated eight fields: (1) severity assessment and initial triage; (2) diagnostic approach and role of toxicological analyses; (3) supportive care; (4) decontamination; (5) elimination enhancement; (6) place of antidotes; (7) specificities related to recreational drug poisoning; and (8) characteristics of cardiotoxicant poisoning. Population, Intervention, Comparison, and Outcome (PICO) questions were reviewed and updated as needed, and evidence profiles were generated. Analysis of the literature and formulation of recommendations were then conducted according to the GRADE® methodology. RESULTS The SRLF-SFMU guideline panel provided 41 statements concerning the management of pharmaceutical and recreational drug poisoning. Ethanol and chemical poisoning were excluded from the scope of these recommendations. After two rounds of discussion and various amendments, a strong consensus was reached for all recommendations. Six of these recommendations had a high level of evidence (GRADE 1±) and six had a low level of evidence (GRADE 2±). Twenty-nine recommendations were in the form of expert opinion recommendations due to the low evidences in the literature. CONCLUSIONS The experts reached a substantial consensus for several strong recommendations for optimal management of pharmaceutical and recreational drug poisoning, mainly regarding the conditions and effectiveness of naloxone and N-acetylcystein as antidotes to treat opioid and acetaminophen poisoning, respectively.
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Affiliation(s)
- Bruno Mégarbane
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, AP-HP, INSERM MURS-1144, University of Paris, 2 Rue Ambroise Paré, Paris, 75010 France
| | - Mathieu Oberlin
- Emergency Department, HuManiS Laboratory (EA7308), University Hospital, Strasbourg, France
| | - Jean-Claude Alvarez
- Department of Pharmacology and Toxicology, Inserm U-1173, FHU Sepsis, Raymond Poincaré Hospital, AP-HP, Paris-Saclay University, Garches, France
| | - Frederic Balen
- Emergency Department, Toulouse University Hospital, Toulouse, France
| | - Sébastien Beaune
- Department of Emergency Medicine, Ambroise Paré Hospital, AP-HP, INSERM UMRS-1144, Paris-Saclay University, Boulogne-Billancourt, France
| | - Régis Bédry
- Hospital Secure Unit, Pellegrin University Hospital, Bordeaux, France
| | - Anthony Chauvin
- Emergency Department, Hôpital Lariboisière, AP-HP, Paris, France
| | - Isabelle Claudet
- Pediatric Emergency Department Children’s Hospital CHU Toulouse, Toulouse, France
| | - Vincent Danel
- Department of Emergency Medicine, University Hospital of Grenoble, Grenoble, France
| | - Guillaume Debaty
- 5525, University Grenoble Alps/CNRS/CHU de Grenoble Alpes/TIMC-IMAG UMR, Grenoble, France
| | | | - Nicolas Deye
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, AP-HP, INSERM U942, University of Paris, Paris, France
| | - Jean-Michel Gaulier
- Laboratory of Toxicology, EA 4483 - IMPECS - IMPact de L’Environnement Chimique Sur La Santé Humaine, University of Lille, Lille, France
| | | | - Philippe Hantson
- Intensive Care Department, Cliniques Universitaires St-Luc, Brussels, Belgium
| | - Frédéric Jacobs
- Polyvalent Intensive Care Unit, Antoine Béclère Hospital, Assistance Publique-Hôpitaux de Paris, Paris-Sud University, Clamart, France
| | - Karim Jaffal
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, AP-HP, INSERM MURS-1144, University of Paris, 2 Rue Ambroise Paré, Paris, 75010 France
| | - Magali Labadie
- Poison Control Centre of Bordeaux, University Hospital of Bordeaux, Bordeaux, France
| | - Laurence Labat
- Laboratory of Toxicology, Federation of Toxicology APHP, Lariboisière Hospital, INSERM UMRS-1144, University of Paris, Paris, France
| | - Jérôme Langrand
- Poison Control Center of Paris, Federation of Toxicology, Fernand-Widal-Lariboisière Hospital, AP-HP, INSERM UMRS-1144, University of Paris, Paris, France
| | - Frédéric Lapostolle
- SAMU 93-UF Recherche-Enseignement-Qualité, Inserm, U942, Avicenne Hospital, AP-HP, Paris-13 University, Bobigny, France
| | - Philippe Le Conte
- Department of Emergency Medicine, University Hospital of Nantes, Nantes, France
| | - Maxime Maignan
- Emergency Department, Grenoble University Hospital, INSERM U1042, Grenoble Alpes University, Grenoble, France
| | - Patrick Nisse
- Poison Control Centre, University Hospital of Lille, Lille, France
| | - Philippe Sauder
- Intensive Care Unit, University Hospital of Strasbourg, Strasbourg, France
| | | | - Dominique Vodovar
- Poison Control Center of Paris, Federation of Toxicology, Fernand-Widal-Lariboisière Hospital, AP-HP, INSERM UMRS-1144, University of Paris, Paris, France
| | - Sebastian Voicu
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, AP-HP, INSERM MURS-1144, University of Paris, 2 Rue Ambroise Paré, Paris, 75010 France
| | - Pierre-Géraud Claret
- Department of Anesthesia Resuscitation Pain Emergency Medicine, Nîmes University Hospital, Nîmes, France
| | - Charles Cerf
- Intensive Care Unit, Foch Hospital, Suresnes, France
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25
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Masood MA, Veenstra TD. LC-MS-sMRM method development and validation of different classes of pain panel drugs and analysis of clinical urine samples. Basic Clin Pharmacol Toxicol 2020; 127:533-550. [PMID: 33135384 DOI: 10.1111/bcpt.13519] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 07/14/2017] [Indexed: 11/26/2022]
Abstract
Urine drug testing (UDT) is an important analytical/bio-analytical technique that has inevitably become an integral and vital part of a testing programme for diagnostic purposes. This manuscript presents a tailor-made LC-MS/MS quantitative assay method development and validation for a custom group of 33 pain panel drugs and their metabolites belonging to different classes (opiates, opioids, benzodiazepines, illicit, amphetamines, etc.) that are prescribed in pain management and depressant therapies. The LC-MS/MS method incorporates two experiments to enhance the sensitivity of the assay and has a run time of about 7 minutes with no prior purification of the samples required and a flow rate of 0.7 mL/min. The method also includes the second-stage metabolites for some drugs that belong to different classes but have first-stage similar metabolic pathways that will enable to correctly identify the right drug or to flag the drug that might be due to specimen tampering. Some real case examples and difficulties in peak picking were provided with some of the analytes in subject samples. Finally, the method was deliberated with some randomly selected de-identified clinical subject samples, and the data evaluated from "direct dilute and shoot analysis" and after "glucuronide hydrolysis" were compared. This method is now used to run routinely more than 100 clinical subject samples on a daily basis.
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Affiliation(s)
- M Athar Masood
- Laboratory of Proteomics and Analytical Technologies, Advanced Technology Program, SAIC-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Timothy D Veenstra
- Laboratory of Proteomics and Analytical Technologies, Advanced Technology Program, SAIC-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
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26
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Abstract
Celiac disease (CD) is an immune-mediated gluten-sensitive enteropathy. Currently, it affects around 1% of world population, but it is constantly growing. Celiac patients have to follow a strict gluten-free (GF) diet. Beer is one of the most consumed beverages worldwide, but it is not safe for people with CD. It has a gluten content usually above the safe threshold (20 ppm), determined by the official method for hydrolyzed foods (R5-competitive-ELISA). The demand on the market for GF beers is increasingly growing. This review aims to provide a comprehensive overview of different strategies to produce GF beer, highlighting strengths and weaknesses of each approach and taking into account technological and sensory issues. GF cereals or pseudocereals have poor brewing attitudes (if used as main raw material) and give the beer unusual flavour. Instead, enzymatic treatments allow traditional brewing process followed by gluten content reduction. A survey on 185 GF-producing breweries (both industrial and craft) from all over the world have been considered to assess which approach is most used. Beers brewed with GF cereals and pseudocereals (used in well-balanced proportions) are more common than gluten-removed (GR) beers, obtained by enzymatic treatment.
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27
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Le Goff C, Farre-Segura J, Stojkovic V, Dufour P, Peeters S, Courtois J, Nizet A, De Vos N, Cavalier E. The pathway through LC-MS method development: in-house or ready-to-use kit-based methods? ACTA ACUST UNITED AC 2020; 58:1002-1009. [DOI: 10.1515/cclm-2019-0916] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/21/2020] [Indexed: 12/31/2022]
Abstract
Abstract
Historically, the determination of low concentration analytes was initially made possible by the development of rapid and easy-to-perform immunoassays (IAs). Unfortunately, typical problems inherent to IA technologies rapidly appeared (e.g. elevated cost, cross-reactivity, lot-to-lot variability, etc.). In turn, liquid chromatography tandem mass spectrometry (LC-MS/MS) methods are sensitive and specific enough for such analyses. Therefore, they would seem to be the most promising candidates to replace IAs. There are two main choices when implementing a new LC-MS/MS method in a clinical laboratory: (1) Developing an in-house method or (2) purchasing ready-to-use kits. In this paper, we discuss some of the respective advantages, disadvantages and mandatory requirements of each choice. Additionally, we also share our experiences when developing an in-house method for cortisol determination and the implementation of an “ready-to-use” (RTU) kit for steroids analysis.
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Affiliation(s)
- Caroline Le Goff
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Jordi Farre-Segura
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Violeta Stojkovic
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Patrice Dufour
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Stéphanie Peeters
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Justine Courtois
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Adrien Nizet
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
| | - Nathalie De Vos
- Department of Medical Chemistry , Free University Hospital of Bruxelles (LHUB-ULB) , Brussels , Belgium
| | - Etienne Cavalier
- Department of Clinical Chemistry , University Hospital of Liege (CHU-ULiege) , Liege , Belgium
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28
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Chen Z, Gao Y, Zhong D. Technologies to improve the sensitivity of existing chromatographic methods used for bioanalytical studies. Biomed Chromatogr 2020; 34:e4798. [PMID: 31994210 DOI: 10.1002/bmc.4798] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/10/2020] [Accepted: 01/24/2020] [Indexed: 12/16/2022]
Abstract
Chromatographic method has long been recognized as the most widely used separation method in bioanalytical research. However, the relatively low sensitivity of existing chromatographic methods remains a significant challenge, as the requirements for experimental procedures become more demanding. This review discusses the main causes for the low sensitivity of chromatographic methods and aims to introduce different technologies for enhancing their sensitivity in the following aspects: (i) different pretreatment methods for improving clean-up efficiency and recovery; (ii) derivatization step for altering the chromatographic behavior of analytes and enhancing MS ionization efficiency; (iii) optimal LC-MS conditions and appropriate separation mechanism; and (iv) applications of other chromatographic methods, including miniaturized LC, 2D-LC, 2D-GC, and supercritical fluid chromatography. Altogether, this review is devoted to summarizing the recent technologies reported in the literature and providing new strategies for the detection of bioanalytes.
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Affiliation(s)
- Zhendong Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yuxiong Gao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Dafang Zhong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
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29
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Melnyk T, Đorđević S, Conejos-Sánchez I, Vicent MJ. Therapeutic potential of polypeptide-based conjugates: Rational design and analytical tools that can boost clinical translation. Adv Drug Deliv Rev 2020; 160:136-169. [PMID: 33091502 DOI: 10.1016/j.addr.2020.10.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/09/2020] [Accepted: 10/14/2020] [Indexed: 12/14/2022]
Abstract
The clinical success of polypeptides as polymeric drugs, covered by the umbrella term "polymer therapeutics," combined with related scientific and technological breakthroughs, explain their exponential growth in the development of polypeptide-drug conjugates as therapeutic agents. A deeper understanding of the biology at relevant pathological sites and the critical biological barriers faced, combined with advances regarding controlled polymerization techniques, material bioresponsiveness, analytical methods, and scale up-manufacture processes, have fostered the development of these nature-mimicking entities. Now, engineered polypeptides have the potential to combat current challenges in the advanced drug delivery field. In this review, we will discuss examples of polypeptide-drug conjugates as single or combination therapies in both preclinical and clinical studies as therapeutics and molecular imaging tools. Importantly, we will critically discuss relevant examples to highlight those parameters relevant to their rational design, such as linking chemistry, the analytical strategies employed, and their physicochemical and biological characterization, that will foster their rapid clinical translation.
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Affiliation(s)
- Tetiana Melnyk
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab, Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - Snežana Đorđević
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab, Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - Inmaculada Conejos-Sánchez
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab, Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - María J Vicent
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab, Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
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30
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Tandem mass spectrometry in the clinical laboratory: A tutorial overview. CLINICAL MASS SPECTROMETRY 2020. [DOI: 10.1016/j.clinms.2019.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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31
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Melatonin is not stored in platelets. Clin Chim Acta 2019; 498:17-20. [DOI: 10.1016/j.cca.2019.07.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 01/30/2023]
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32
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Bianchi L, Campi B, Sessa MR, De Marco G, Ferrarini E, Zucchi R, Marcocci C, Vitti P, Manetti L, Saba A, Agretti P. Measurement of urinary free cortisol by LC-MS-MS: adoption of a literature reference range and comparison with our current immunometric method. J Endocrinol Invest 2019; 42:1299-1305. [PMID: 31012054 DOI: 10.1007/s40618-019-01050-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 04/10/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE One of the best indicators of adrenal gland dysfunction is the level of free cortisol measured in the 24-h urine (UFC) which faithfully reflects the level of biologically active serum cortisol not subjected to circadian variations. Liquid chromatography coupled with tandem mass spectrometry (LC-MS-MS) is a sensitive, accurate and precise method recently available in routine laboratories that could remedy interference problems of immunoassays. METHODS In this study, a literature reference range for UFC measured by LC-MS-MS was verified, and UFC values measured by LC-MS-MS and immunoassay were compared. Immunometric UFC measurement was performed by ACCESS CORTISOL assay without preliminary extraction, using Beckman Coulter UniCel DxI 600 highly automated platform. Liquid chromatography-tandem mass spectrometry UFC measurement was performed by a home-made validated method using cortisol-D4 as internal standard with preliminary deproteinization of urinary samples by centrifugal filter and injection on reverse-phase column. Cortisol was analyzed in positive ion mode with an ESI interface. RESULTS The reference interval from literature (11-70 μg/day) was confirmed by results obtained for healthy study group. Comparison study of the two methods highlighted a constant and proportional systematic error with a general tendency to overestimate results for the in-use method. CONCLUSIONS In conclusion, the direct immunometric method overestimates UFC results with respect to liquid chromatography-tandem mass spectrometry which represents the reference method. The literature reference range 11-70 μg/day was confirmed and can be adopted by our lab that will shift all UFC tests performed in routine to the mass spectrometry-based method, satisfying clinicians' request.
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Affiliation(s)
- L Bianchi
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - B Campi
- Institute of Clinical Physiology, National Research Council, Via Moruzzi 1, 56124, Pisa, Italy
| | - M R Sessa
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - G De Marco
- Section of Endocrinology, Department of Clinical and Experimental Medicine, University of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - E Ferrarini
- Section of Endocrinology, Department of Clinical and Experimental Medicine, University of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - R Zucchi
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Savi 10, 56126, Pisa, Italy
| | - C Marcocci
- Section of Endocrinology, Department of Clinical and Experimental Medicine, University of Pisa, Via Paradisa 2, 56124, Pisa, Italy
- Endocrinology Units, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - P Vitti
- Section of Endocrinology, Department of Clinical and Experimental Medicine, University of Pisa, Via Paradisa 2, 56124, Pisa, Italy
- Endocrinology Units, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - L Manetti
- Endocrinology Units, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
| | - A Saba
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Savi 10, 56126, Pisa, Italy
- Laboratory of Clinical Pathology, University Hospital of Pisa, Via Roma 67, 56126, Pisa, Italy
| | - P Agretti
- Laboratory of Chemistry and Endocrinology, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy.
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33
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Peters MA, van Faassen M, de Jong WH, Bouma G, Meijer C, Walenkamp AM, de Vries EG, Oosting SF, Ruhé HG, Kema IP. Use of selective serotonin reuptake inhibitors is associated with very low plasma-free serotonin concentrations in humans. Ann Clin Biochem 2019; 57:59-63. [PMID: 31533444 DOI: 10.1177/0004563219880567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Selective serotonin reuptake inhibitors (SSRIs) block the serotonin transporter on neurons, but also on platelets, thus decreasing platelet serotonin concentrations in users of SSRIs. Data on plasma-free serotonin concentrations in SSRI users are lacking, while plasma-free serotonin is available for receptor binding and plays a role in several pathophysiological processes. We therefore measured the plasma-free and platelet serotonin concentrations in users of SSRIs and age-matched healthy controls, and we analysed plasma concentrations of the serotonin precursor tryptophan and serotonin metabolite 5-hydroxyindoleamineacetic acid (5-HIAA). Methods For this cross-sectional single-centre case control study, participants were recruited at the departments of Psychiatry and General Medicine. High-performance liquid chromatography combined with tandem mass spectrometry (LC-MS/MS) was used to measure plasma-free and platelet serotonin, plasma tryptophan and 5-HIAA concentrations. Preanalytical conditions were optimized by careful blood collection, rapid sample handling, high-speed centrifugation, drug and diet restrictions and age-matched controls. Results In 64 SSRI users, median concentrations of plasma-free and platelet serotonin were 10-fold and 14-fold lower, respectively, than in 64 matched controls. Patients using higher dose SSRIs or those with higher affinity for the serotonin transporter had lower plasma-free and platelet serotonin concentrations. Compared with controls, SSRI users had similar median plasma tryptophan concentrations but slightly higher plasma 5-HIAA concentrations. Conclusion SSRI users have low platelet serotonin and low plasma-free serotonin. This could not be explained by lower concentrations of its precursor tryptophan, and only partially by increased breakdown to 5-HIAA.
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Affiliation(s)
- Marloes Am Peters
- University Medical Center Groningen, Department of Medical Oncology, University of Groningen, Groningen, the Netherlands
| | - Martijn van Faassen
- University Medical Center Groningen, Department of Laboratory Medicine, University of Groningen, Groningen, the Netherlands
| | - Wilhelmina Ha de Jong
- University Medical Center Groningen, Department of Laboratory Medicine, University of Groningen, Groningen, the Netherlands
| | - Grietje Bouma
- University Medical Center Groningen, Department of Medical Oncology, University of Groningen, Groningen, the Netherlands
| | - Coby Meijer
- University Medical Center Groningen, Department of Medical Oncology, University of Groningen, Groningen, the Netherlands
| | - Annemiek Me Walenkamp
- University Medical Center Groningen, Department of Medical Oncology, University of Groningen, Groningen, the Netherlands
| | - Elisabeth Ge de Vries
- University Medical Center Groningen, Department of Medical Oncology, University of Groningen, Groningen, the Netherlands
| | - Sjoukje F Oosting
- University Medical Center Groningen, Department of Medical Oncology, University of Groningen, Groningen, the Netherlands
| | - Henricus G Ruhé
- University Medical Center Groningen, University Center for Psychiatry, University of Groningen, Groningen, the Netherlands.,Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, UK.,Department of Psychiatry, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ido P Kema
- University Medical Center Groningen, Department of Laboratory Medicine, University of Groningen, Groningen, the Netherlands
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Kim KY, Kwon HJ, Cho SH, Nam M, Kim CW. Development and validation of a highly sensitive LC–MS/MS method for in vitro measurement of histamine concentration. J Pharm Biomed Anal 2019; 172:33-41. [DOI: 10.1016/j.jpba.2019.04.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 11/29/2022]
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Liu Q, Jiang F, Zhu J, Zhong G, Huang M. Development, Validation, and Application of a New Method To Correct the Nonlinearity Problem in LC-MS/MS Quantification Using Stable Isotope-Labeled Internal Standards. Anal Chem 2019; 91:9616-9622. [DOI: 10.1021/acs.analchem.9b00947] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Qian Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong Province, China
- The Second Affiliated Hospital of Guizhou Medical University, Kaili 556000, Guizhou Province, China
| | - Fulin Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong Province, China
| | - Janshon Zhu
- Guangdong RangerBio Technologies Co., Ltd., Dongguan 523000, Guangdong Province, China
| | - Guoping Zhong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong Province, China
| | - Min Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong Province, China
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Antonia Álvarez-Fernández M, Fernández-Cruz E, Valero E, Troncoso AM, Carmen García-Parrilla M. Efficiency of three intracellular extraction methods in the determination of metabolites related to tryptophan and tyrosine in winemaking yeast's metabolism by LC-HRMS. Food Chem 2019; 297:124924. [PMID: 31253284 DOI: 10.1016/j.foodchem.2019.05.198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 01/09/2023]
Abstract
Yeast nitrogen metabolism produces metabolites, whose origin in wines has scarcely been studied, with an important biological and organoleptic role. The present work focuses on comparing three intracellular extraction methods in order to elucidate efficiency of extraction while measuring the effect of temperature upon the integrity of the compounds related to the metabolism of tryptophan and tyrosine by yeast. Two UHPLC/HRMS methods to measure 16 metabolites were developed and validated. The validation provided optimum values of LOD (7.4·10-6 to 0.1 μg L-1), of LOQ (2·10-5 to 0.02 μg L-1) of precision (11-0.5% RSD) and repeatability (12-0.5% RSD). The removal of interfering molecules enabled matrix effects to be kept at low levels. The results pointed out that the low-temperature methods were more effective, providing better precision for 16 metabolites. The high-temperature extraction method may yield false enhanced compounds concentrations since they originate in cell wall macromolecules degradation.
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Affiliation(s)
- M Antonia Álvarez-Fernández
- Departamento de Nutrición, Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/P. García González n° 2, Sevilla 41012, Spain
| | - E Fernández-Cruz
- Departamento de Nutrición, Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/P. García González n° 2, Sevilla 41012, Spain
| | - E Valero
- Departamento de Biología Molecular e Ingeniería Bioquímica, Universidad Pablo de Olavide, Ctra. Utrera, Km 1, Sevilla 41013, Spain
| | - Ana M Troncoso
- Departamento de Nutrición, Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/P. García González n° 2, Sevilla 41012, Spain
| | - M Carmen García-Parrilla
- Departamento de Nutrición, Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/P. García González n° 2, Sevilla 41012, Spain.
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Zhang W, Ren Y, Lin Z, Ouyang Z. High-Precision Quantitation of Biofluid Samples Using Direct Mass Spectrometry Analysis. Anal Chem 2019; 91:6986-6990. [PMID: 31074609 DOI: 10.1021/acs.analchem.9b01694] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The transition of mass spectrometry for clinical analysis is highly desirable, and major progress has been made with direct sampling ionization for operation simplification. High-precision quantitation, however, remains a major challenge in this transition. Herein, a novel method was developed for direct quantitation of biofluid samples, using an extremely simplified procedure for incorporation of internal standards selected against the traditional rules. Slug flow microextraction was used for the development, with conditions predicted by a theoretical model, viz., using internal standards of partition coefficients very different from the analytes and large sample-to-extraction solvent volume ratios. Direct quantitation of drug compounds in urine and blood samples was demonstrated. This development enabled an extremely simplified protocol that is expected to have a significant impact on on-site or clinical analysis.
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Affiliation(s)
- Wenpeng Zhang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China.,Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Yue Ren
- Weldon School of Biomedical Engineering , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Ziqing Lin
- Weldon School of Biomedical Engineering , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Zheng Ouyang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China.,Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States.,Weldon School of Biomedical Engineering , Purdue University , West Lafayette , Indiana 47907 , United States
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Kertys M, Urbanova A, Mestanik M, Tonhajzerova I, Mokry J. Simultaneous Determination of Total Cortisol and Cortisone in Human Plasma by Liquid Chromatography-Tandem Mass Spectrometry: Method Development, Validation and Preliminary Clinical Application. CURR PHARM ANAL 2019. [DOI: 10.2174/1573412914666180427094811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:Cortisol as a major glucocorticosteroid product of the adrenal cortex which has been recognized as a stress biomarker in evaluating stress related disorders for a long time. Plasma concentration of cortisol and its metabolite cortisone are usually changed in physiological and psychological tension, anxiety and depression. In order to study these changes properly, we need a sensitive, accurate and reproducible assay for plasma cortisol and cortisone determination. </P><P> Objective: The aim of this study was to develop a sensitive and robust method for the determination of total cortisol and cortisone in human plasma using mass spectrometry.Methods:A fast, sensitive and selective liquid chromatography-tandem mass spectrometry (LCMS/ MS) method was developed, validated, and then the levels of cortisol and cortisone were determined. Plasma samples cleanup procedure was composed of two steps: the first was a protein precipitation with 1 % formic acid in acetonitrile, and the second was an on-line solid phase extraction (SPE). Afterwards, cortisol and cortisone were separated using a C18 ACQUITY UPLC BEHTM column with a gradient elution. The mobile phase A was 0.1 % formic acid in water, the mobile phase B was 0.1 % methanol. For the detection we used a XEVO TQ-S mass spectrometer operating in the ESI positive mode.Results:The time of analysis was 6.5 minutes and the quantification range was 5-600 ng/mL for cortisol and cortisone, with > 94% recovery for all analytes (cortisol, cortisone and internal standards). The method was validated according to the EMA guideline for bioanalytical method validation.Conclusion:A simple and sensitive LC-MS/MS method was developed and validated for measurement of cortisol and cortisone in human plasma. Our findings indicate that the proposed analytical method is suitable for routine analysis.
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Affiliation(s)
- Martin Kertys
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Bratislava, Slovakia
| | - Anna Urbanova
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Bratislava, Slovakia
| | - Michal Mestanik
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Bratislava, Slovakia
| | - Ingrid Tonhajzerova
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Bratislava, Slovakia
| | - Juraj Mokry
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Bratislava, Slovakia
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Macut D, Milutinović DV, Rašić-Marković A, Nestorov J, Bjekić-Macut J, Stanojlović O. A decade in female reproduction: an endocrine view of the past and into the future. Hormones (Athens) 2018; 17:497-505. [PMID: 30421155 DOI: 10.1007/s42000-018-0073-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 09/10/2018] [Indexed: 12/01/2022]
Abstract
Over the last decade, huge achievements have been made in the fields of neurophysiology, molecular endocrinology, and biochemistry, as well as in the successful translation of clinical research into diseases into clinical practice. As regards female reproduction, most of the advances made in this area were achieved in gonadal axis regulation, regulation of behavior through sex steroids, reproductive genetics, preservation of ovarian reproductive function, steroid profiling, and metabolic and overall reproductive outcomes. The coming years are expected to bring further understanding of the relationships between nutrition, energy metabolism, and reproductive function and to succeed in identifying new genetic markers linked to adverse metabolic and unfavorable cardiovascular outcomes in women. From our perspective, future research in the field of female reproduction should be directed toward doing research into genetic reproductive abnormalities and neuroendocrine diseases, pathophysiology, long-term health outcomes for oligo/amenorrhea, hyperandrogenism, and ovulatory dysfunction. It is additionally expected that a better understanding will be gained of the endocrinology of the placenta and of pregnancy, the role of the microbiome in female reproduction, the role of insulin sensitizers, anti-obesity and anti-diabetic drugs, and various advances in the prevention of ovarian damage caused by various oncology therapies, while new therapeutic options for the treatment of infertility, including kisspeptin, will be developed.
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Affiliation(s)
- Djuro Macut
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Faculty of Medicine, University of Belgrade, Dr Subotića 13, Belgrade, 11000, Serbia.
| | - Danijela Vojnović Milutinović
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | | | - Jelena Nestorov
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Jelica Bjekić-Macut
- UMC Bežanijska kosa, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Olivera Stanojlović
- Institute of Medical Physiology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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Dahl SR, Nermoen I, Brønstad I, Husebye ES, Løvås K, Thorsby PM. Assay of steroids by liquid chromatography-tandem mass spectrometry in monitoring 21-hydroxylase deficiency. Endocr Connect 2018; 7:1542-1550. [PMID: 30530876 PMCID: PMC6311459 DOI: 10.1530/ec-18-0453] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 12/07/2018] [Indexed: 12/26/2022]
Abstract
Immunoassays of steroid hormones are still used in the diagnosis and monitoring of patients with congenital adrenal hyperplasia. However, cross-reactivity between steroids can give rise to falsely elevated steroid levels. Here, we compare the use of immunoassays and liquid chromatography-tandem mass spectrometry (LC-MS/MS) in the monitoring of patients with classic 21-hydroxylase deficiency (21OHD). Steroid profiles in different mutation groups (genotypes) were also compared. Fifty-five patients with classic 21OHD (38 women) were studied. Blood samples were collected in the morning after an overnight medication fast. LC-MS/MS and immunoassays were employed to assay 17-hydroxyprogesterone (17OHP), testosterone and androstenedione. In addition, 21-deoxycortisol (21DF), 11-deoxycortisol (11DF), corticosterone, deoxycorticosterone, cortisone and cortisol were analyzed by LC-MS/MS. Testosterone, androstenedione and 17OHP levels were consistently lower (by about 30-50%) when measured by LC-MS/MS compared with immunoassays, with exception of testosterone in men. There was a significant correlation between 21DF and 17OHP (r = 0.87, P < 0.001), but three patients had undetectable 21DF. Subjects with no enzyme activity had significantly lower mean 11DF concentrations than subjects with residual activity. The use of LC-MS/MS gives a more specific view of adrenal steroid levels in 21OHD compared with immunoassays, which seem to considerably overestimate the levels of 17OHP and androstenedione. Falsely elevated levels of 17OHP and androstenedione could lead to overtreatment with glucocorticoids.
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Affiliation(s)
- Sandra R Dahl
- Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Ingrid Nermoen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Correspondence should be addressed to I Nermoen:
| | - Ingeborg Brønstad
- National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Eystein S Husebye
- Department of Clinical Science, University of Bergen, Bergen, Norway
- K.G. Jebsen-Center for Autoimmune Diseases, University of Bergen, Bergen, Norway
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Kristian Løvås
- Department of Clinical Science, University of Bergen, Bergen, Norway
- K.G. Jebsen-Center for Autoimmune Diseases, University of Bergen, Bergen, Norway
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Per M Thorsby
- Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
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Muchiri RN, Kowal KE, Hensley K, Feinstein DL, van Breemen RB. Analysis of lanthionine ketimine ethyl ester in mouse serum, whole blood and tissues using ultrahigh-pressure liquid chromatography/tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:1941-1948. [PMID: 30117207 DOI: 10.1002/rcm.8263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/31/2018] [Accepted: 08/04/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE Preclinical studies in the search for treatments for several neurodegenerative diseases have identified lanthionine ketimine (LK) and its monoethyl ester derivative (LKE) as potential candidates. An ultrahigh-pressure liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS) assay was developed to evaluate bioavailability by measuring these compounds in mouse serum, whole blood and brain tissue. METHODS Following administration of LKE to mice for 3 days in chow at 300 ppm, the animals were sacrificed, and LKE was extracted from serum, whole blood and brain tissues through protein precipitation using cold methanol. To enhance chromatographic separation and electrospray ionization, LK was methylated using diazomethane. Separations were carried out using C18 reversed-phase UHPLC, and quantitative measurements were obtained using on-line triple-quadruple mass spectrometry with positive ion electrospray ionization, collision-induced dissociation and selected reaction monitoring. Tolbutamide was used as internal standard. RESULTS LKE showed good recovery ranging from 77-90% in serum and 82-88% in brain tissue. An eight-point standard curve ranging from 0.005 to 4.6 μM was linear (R2 0.998). The average LKE detected in mouse serum was 277.42 nM, while the concentration in whole blood was 38 nM. Neither LK nor LKE was detected in brain tissues. CONCLUSIONS A rapid quantitative method to measure LKE in mouse serum, whole blood and brain tissues using UHPLC/MS/MS was developed and validated following FDA guidelines. This method is suitable for bioavailability and pharmacokinetic studies.
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Affiliation(s)
- Ruth N Muchiri
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | - Katarzyna E Kowal
- Department of Veterans Affairs, Jesse Brown VA Medical Center, University of Illinois at Chicago, IL, USA
| | - Kenneth Hensley
- Arkansas College of Osteopathic Medicine, Fort Smith, AR, USA
| | - Douglas L Feinstein
- Department of Veterans Affairs, Jesse Brown VA Medical Center, University of Illinois at Chicago, IL, USA
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Smith KA, Merrigan SD, Johnson-Davis KL. Selecting a Structural Analog as an Internal Standard for the Quantification of 6-Methylmercaptopurine by LC-MS/MS. J Appl Lab Med 2018; 3:384-396. [PMID: 33636909 DOI: 10.1373/jalm.2018.026187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/30/2018] [Indexed: 11/06/2022]
Abstract
BACKGROUND When choosing an analog internal standard (IS) in a quantitative LC-MS/MS assay, careful selection and thorough verification are important for developing an accurate quantitative assay. The IS is a critical component in quantitative mass spectrometry because it is used to normalize results by compensating for variations in sample preparation and instrument performance. Here we present the results of our investigation in the selection process for a structural analog IS (SA-IS) to be used in the quantification of 6-methylmercaptopurine (6-MMP) in cytolysed red blood cell (RBC). METHODS A cocktail solution of 9 SA-ISs including the isotopically labeled structural isomer and the 6-MMP stable isotope-labeled IS (SIL-IS) was spiked into cytolysed RBC controls and patient samples. Linearity, accuracy, sensitivity, precision, run stability, method comparison, and reinjection reproducibility experiments were performed. Ion suppression was also assessed by T-infusing the cocktail solution. RESULTS All analogs were linear from 100 to 1200 ng/mL 6-MMP with acceptable precision and sensitivity by use of a spiked blank lysate. Method comparison plots of 6-MMP concentrations in patient samples had excellent agreement for 2 of the SA-ISs (i.e., the isotopically labeled structural isomer and an SA-IS with an added methyl group) when compared to the SIL-IS. Halogen-substituted analogs (i.e., Cl and Br) also met the criteria as an acceptable IS. However, 2 of the selected SA-ISs having substituted amine moieties showed unacceptable performance, with ≥15% bias when compared to the SIL-IS. CONCLUSION There are many parameters to consider when determining if an analog will be a good IS choice, and the approaches highlighted in this article can be applied to the selection of SA-IS in the development of other LC-MS/MS assays.
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Affiliation(s)
- Kathryn A Smith
- ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Stephen D Merrigan
- ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Kamisha L Johnson-Davis
- ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT.,Department of Pathology, University of Utah Health Sciences Center, Salt Lake City, UT
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Banerjee SL, Dionne U, Lambert JP, Bisson N. Targeted proteomics analyses of phosphorylation-dependent signalling networks. J Proteomics 2018; 189:39-47. [DOI: 10.1016/j.jprot.2018.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/19/2018] [Accepted: 02/01/2018] [Indexed: 01/18/2023]
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Cagnone M, Salvini R, Bardoni A, Fumagalli M, Iadarola P, Viglio S. Searching for biomarkers of chronic obstructive pulmonary disease using proteomics: The current state. Electrophoresis 2018; 40:151-164. [PMID: 30216498 DOI: 10.1002/elps.201800305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/10/2018] [Accepted: 09/10/2018] [Indexed: 12/24/2022]
Abstract
Detection of proteins which may be potential biomarkers of disorders represents a big step forward in understanding the molecular mechanisms that underlie pathological processes. In this context proteomics plays the important role of opening a path for the identification of molecular signatures that can potentially assist in early diagnosis of several clinical disturbances. Aim of this report is to provide an overview of the wide variety of proteomic strategies that have been applied to the investigation of chronic obstructive pulmonary disease (COPD), a severe disorder that causes an irreversible damage to the lungs and for which there is no cure yet. The results in this area published over the past decade show that proteomics indeed has the ability of monitoring alterations in expression profiles of proteins from fluids/tissues of patients affected by COPD and healthy controls. However, these data also suggest that proteomics, while being an attractive tool for the identification of novel pathological mediators of COPD, remains a technique mainly generated and developed in research laboratories. Great efforts dedicated to the validation of these biological signatures will result in the proof of their clinical utility.
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Affiliation(s)
- Maddalena Cagnone
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, Italy
| | - Roberta Salvini
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, Italy
| | - Anna Bardoni
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, Italy
| | - Marco Fumagalli
- Department of Biology and Biotechnologies "L.Spallanzani", Biochemistry Unit, University of Pavia, Italy
| | - Paolo Iadarola
- Department of Biology and Biotechnologies "L.Spallanzani", Biochemistry Unit, University of Pavia, Italy
| | - Simona Viglio
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, Italy
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Bunch DR, McShane AJ, Wang S. Investigation of transition ion ratio variation for liquid chromatography-tandem mass spectrometry: A case study approach. Clin Chim Acta 2018; 486:205-208. [PMID: 30098951 DOI: 10.1016/j.cca.2018.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/12/2018] [Accepted: 08/07/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND A transition ion ratio (TIR) is the ratio of one fragment over another from the same precursor and is frequently monitored in liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays for analyte identification. The Clinical and Laboratory Standards Institute (CLSI) C50-A guidelines give a static percent allowable TIR deviation based on the TIR level. Anecdotally, we observed failures of these rules for some of our LC-MS/MS assays. We determined what parameters may affect TIRs in a clinical setting and whether TIR variations may be analyte, matrix, instrument service, and/or concentration dependent. METHODS Data was collected from the validation and selected periods after implementation for urine benzodiazepines (7 analytes) and plasma azole antifungals (6 analytes). TIRs for the calibrators and quality control materials on a Thermo TSQ™ Quantum Ultra from July 2016 to February 2017 for benzodiazepines in urine and Thermo TSQ™ Vantage from May 2016 to Oct 2016 for azoles in serum were monitored. RESULTS The statistically significant day-to-day TIR shift ranged from 5.7 to 27.0% of the days studies for benzodiazepines and from 5.6 to 27.8% of the days studied for azoles excluding shifts caused by instrument services. Instrument service had significant impact on all benzodiazepines except oxazepam with p-values ranging from 1.79 × 10-6 to 1.53 × 10-39 and 4 of the 6 azoles (fluconazole, isavuconazole, voriconazole, and itraconazole) with (p from 7.89 × 10-3 to 1.98 × 10-12). Lorazepam, α-hydroxyalprazolam, and hydroxyitraconazole showed significant concentration dependent TIR variations. CONCLUSIONS TIR variations may be affected by instrument services, and can be concentration and analyte dependent. Instead of using a static percent deviation rule, establishment of TIR variation criteria for each analyte during test development and validation may provide a more useful tool for analyte identification.
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Affiliation(s)
- Dustin R Bunch
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, OH, United States of America
| | - Adam J McShane
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, OH, United States of America
| | - Sihe Wang
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, OH, United States of America.
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Klupczynska A, Plewa S, Sytek N, Sawicki W, Dereziński P, Matysiak J, Kokot ZJ. A study of low-molecular-weight organic acid urinary profiles in prostate cancer by a new liquid chromatography-tandem mass spectrometry method. J Pharm Biomed Anal 2018; 159:229-236. [PMID: 29990890 DOI: 10.1016/j.jpba.2018.06.059] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/19/2018] [Accepted: 06/29/2018] [Indexed: 12/19/2022]
Abstract
Metabolomic studies constantly require high throughput screenings, and this drives development and optimization of methods that include more analytes in a single run, shorten the analysis time and simplify sample preparation. The aim of the study was to develop a new simple and fast liquid chromatography-tandem mass spectrometry-based methodology for quantitative analysis of a panel of ten organic acids in urine. The metabolites selected for the study include ten molecules potentially associated with cancer development. Chromatographic separation involved a Phenomenex Synergi Hydro-RP column under gradient conditions. Quantitation of the analytes was performed in multiple reaction monitoring mode under negative ionization. Validation parameters were satisfactory and in line with the international guidelines. The methodology enabled us to analyze urine samples collected from prostate cancer (PC) (n = 49) and benign prostate hyperplasia (BPH) (n = 49) patients. The obtained concentrations were normalized with urinary specific gravity (USG) prior to statistical analysis. Five analytes were quantified in all urine samples and we observed the following USG-normalized concentration ranges: citric acid (146.5-6339.8), 3-hydroxyisobutyric acid (22.5-431.7), 2-ketoglutaric acid (4.4-334.4), lactic acid (10.1-786.3), succinic acid (4.1-500.5). 3-hydroxyisobutyric acid significantly decreased between two groups of prostate cancer patients: ≥7 Gleason patients and <7 Gleason patients. Quick sample preparation limited to "dilute and shoot" makes the developed methodology a great tool for future metabolomic studies, especially for detecting disturbances in energy metabolism (Krebs cycle) and amino acids metabolism. The research also broadens our knowledge on the alteration of selected organic acids in PC and BPH patients.
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Affiliation(s)
- Agnieszka Klupczynska
- Department of Inorganic and Analytical Chemistry, Poznań University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Szymon Plewa
- Department of Inorganic and Analytical Chemistry, Poznań University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Natalia Sytek
- Department of Inorganic and Analytical Chemistry, Poznań University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Wojciech Sawicki
- Ward of Urology, The Holy Family Hospital, Jarochowskiego 18, 60-235 Poznań, Poland
| | - Paweł Dereziński
- Department of Inorganic and Analytical Chemistry, Poznań University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Jan Matysiak
- Department of Inorganic and Analytical Chemistry, Poznań University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Zenon J Kokot
- Department of Inorganic and Analytical Chemistry, Poznań University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland.
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Salis F, Descalzo AB, Benito-Peña E, Moreno-Bondi MC, Orellana G. Highly Fluorescent Magnetic Nanobeads with a Remarkable Stokes Shift as Labels for Enhanced Detection in Immunoassays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703810. [PMID: 29665269 DOI: 10.1002/smll.201703810] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Fluorescence immunoassays are popular for achieving high sensitivity, but they display limitations in biological samples due to strong absorption of light, background fluorescence from matrix components, or light scattering by the biomacromolecules. A powerful strategy to overcome these problems is introduced here by using fluorescent magnetic nanobeads doped with two boron-dipyrromethane dyes displaying intense emission in the visible and near-infrared regions, respectively. Careful matching of the emission and absorption features of the dopants leads to a virtual Stokes shift larger than 150 nm achieved by an intraparticle Förster resonance energy transfer (FRET) process between the donor and the acceptor dyes. Additionally, the magnetic properties of the fluorescent beads allow preconcentration of the sample. To illustrate the usefulness of this approach to increase the sensitivity of fluorescence immunoassays, the novel nanoparticles are employed as labels for quantification of the widely used Tacrolimus (FK506) immunosuppressive drug. The FRET-based competitive inhibition immunoassay yields a limit of detection (LOD) of 0.08 ng mL-1 , with a dynamic range (DR) of 0.15-2.0 ng mL-1 , compared to a LOD of 2.7 ng mL-1 and a DR between 4.1 and 130 ng mL-1 for the immunoassay carried out with direct excitation of the acceptor dye.
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Affiliation(s)
- Francesca Salis
- Department of Organic Chemistry, Faculty of Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - Ana B Descalzo
- Department of Organic Chemistry, Faculty of Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - Elena Benito-Peña
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - María C Moreno-Bondi
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - Guillermo Orellana
- Department of Organic Chemistry, Faculty of Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
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Kočová Vlčková H, Pilařová V, Svobodová P, Plíšek J, Švec F, Nováková L. Current state of bioanalytical chromatography in clinical analysis. Analyst 2018; 143:1305-1325. [DOI: 10.1039/c7an01807j] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chromatographic methods have become popular in clinical analysis in both routine and research laboratories.
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Affiliation(s)
- H. Kočová Vlčková
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - V. Pilařová
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - P. Svobodová
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - J. Plíšek
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - F. Švec
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - L. Nováková
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
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de Faria HD, Bueno CT, Krieger JE, Krieger EM, Pereira AC, Santos PCJL, Figueiredo EC. Online extraction of antihypertensive drugs and their metabolites from untreated human serum samples using restricted access carbon nanotubes in a column switching liquid chromatography system. J Chromatogr A 2017; 1528:41-52. [PMID: 29102378 DOI: 10.1016/j.chroma.2017.10.072] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 02/03/2023]
Abstract
A novel analytical method was developed to determine 5 antihypertensive drugs of different pharmacological classes (angiotensin-converting enzyme inhibitors, calcium channel blockers, α-2 adrenergic receptor agonists, angiotensin II receptor blockers, and aldosterone receptor antagonists) and some of their metabolites in human serum. The untreated samples were directly analyzed in a column switching system using an extraction column packed with restricted access carbon nanotubes (RACNTs) in an ultra-high performance liquid chromatography coupled to a mass spectrometer (UHPLC-MS/MS). The RACNTs column was able to exclude approximately 100% of proteins from the samples in 2.0min, maintaining the same performance for about 300 analytical cycles. The method was validated in accordance with Food and Drug Administration (FDA) guidelines, being linear for all the determined analytes in their respective analytical ranges (coefficients of determination higher than 0.99) with limits of detection (LODs) and quantification (LOQs) ranging from 0.09 to 10.85μgL-1 and from 0.30 to 36.17μgL-1, respectively. High recovery values (88-112%) were obtained as well as suitable results for inter and intra-assay accuracy and precision. The method provided an analytical frequency of 5 samples per hour, including the sample preparation and separation/detection steps. The validated method was successfully used to analyze human serum samples of patients undergoing treatment with antihypertensive drugs, being useful for pharmacometabolomic, pharmacogenomic, and pharmacokinetic studies.
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Affiliation(s)
- Henrique Dipe de Faria
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - UNIFAL-MG, Alfenas, MG, Brazil
| | - Carolina Tosin Bueno
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Jose Eduardo Krieger
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Eduardo Moacyr Krieger
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Alexandre Costa Pereira
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Paulo Caleb Júnior Lima Santos
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil; Department of Pharmacology - Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil
| | - Eduardo Costa Figueiredo
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - UNIFAL-MG, Alfenas, MG, Brazil.
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50
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Application of Quality by Design Approach to Bioanalysis: Development of a Method for Elvitegravir Quantification in Human Plasma. Ther Drug Monit 2017. [DOI: 10.1097/ftd.0000000000000428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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