1
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Zhang Q, Wang H, Zhang S, Chen M, Gao Z, Sun J, Wang J, Fu L. Metabolomics identifies phenotypic biomarkers of amino acid metabolism in milk allergy and sensitized tolerance. J Allergy Clin Immunol 2024; 154:157-167. [PMID: 38522626 DOI: 10.1016/j.jaci.2024.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/05/2024] [Accepted: 02/12/2024] [Indexed: 03/26/2024]
Abstract
BACKGROUND A substantial proportion of sensitized individuals tolerate suspected foods without developing allergic symptoms; this phenomenon is known as sensitized tolerance. The immunogenic and metabolic features underlying the sensitized-tolerant phenotype remain largely unknown. OBJECTIVE We aimed to uncover the metabolic signatures associated with clinical milk allergy (MA) and sensitized tolerance using metabolomics. METHODS We characterized the serum metabolic and immunologic profiles of children with clinical IgE-mediated MA (n = 30) or milk-sensitized tolerance (n = 20) and healthy controls (n = 21). A comparative analysis was performed to identify dysregulated pathways associated with the clinical manifestations of food allergy. We also analyzed specific biomarkers indicative of different sensitization phenotypes in children with MA. The candidate metabolites were validated in an independent quantification cohort (n = 41). RESULTS Metabolomic profiling confirmed the presence of a distinct metabolic signature that discriminated children with MA from those with milk-sensitized tolerance. Amino acid metabolites generated via arginine, proline, and glutathione metabolism were uniquely altered in children with sensitized tolerance. Arginine depletion and metabolism through the polyamine pathway to fuel glutamate synthesis were closely associated with suppression of clinical symptoms in the presence of allergen-specific IgE. In children with MA, the polysensitized state was characterized by disturbances in tryptophan metabolism. CONCLUSIONS By combining untargeted metabolomics with targeted validation in an independent quantification cohort, we identified candidate metabolites as phenotypic and diagnostic biomarkers of food allergy. Our results provide insights into the pathologic mechanisms underlying childhood allergy and suggest potential therapeutic targets.
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Affiliation(s)
- Qiaozhi Zhang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Hui Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Shenyu Zhang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei, China
| | - Mingwu Chen
- Department of Pediatrics, the First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei, China
| | - Zhongshan Gao
- Allergy Research Center, Zhejiang University, Hangzhou, China
| | - Jinlyu Sun
- Allergy Department, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jizhou Wang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei, China.
| | - Linglin Fu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China.
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2
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Liu Z, Zhao X, Liu Y, Shi L, Wu L, Yuan H, Jin Y. Development of an insulin-like growth factor-1 certified reference material by SI-traceable isotope-dilution mass spectrometry. Talanta 2024; 273:125812. [PMID: 38452589 DOI: 10.1016/j.talanta.2024.125812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/29/2024] [Accepted: 02/17/2024] [Indexed: 03/09/2024]
Abstract
In this study, an insulin-like growth factor-1 (IGF-1) certified reference material (CRM) was developed by the National Institute of Metrology (NIM), and two different principles for evaluating the IGF-1 CRM were established. After optimisation of the acid hydrolysis conditions (110 °C, 36 h), quantitative determination of peptide purity, and chromatographic separation and mass spectrometric detection, amino acid analysis-based high-performance liquid chromatography combined with isotope-dilution tandem mass spectrometry (AAA-HPLC-IDMS/MS) and peptide analysis-based HPLC-IDMS/MS (Peptide-HPLC-IDMS/MS) were used for certified value assignment; the results obtained were 136.28 and 135.01 μg/g, respectively, which were in good agreement. These results were subjected to the normal distribution test, outlier test, and method consistency test. The homogeneity and stability of the reference materials were also examined, and the uncertainty introduced in the experimental process was calculated. The final certified value was (136 ± 15) μg g-1 (k = 2). The CRM was found to be stable for at least six months when stored at -70 °C and for 7 d when stored at higher temperatures (-20 °C, 4 °C, 25 °C, or 40 °C). The CRM is expected to be used as a primary calibrator for quality control in biopharmaceutical production and clinical diagnostics.
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Affiliation(s)
- Zihan Liu
- National Institute of Metrology, Beijing, China; Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xu Zhao
- National Institute of Metrology, Beijing, China
| | - Yahui Liu
- National Institute of Metrology, Beijing, China
| | - Lianhua Shi
- National Institute of Metrology, Beijing, China
| | - Liqing Wu
- National Institute of Metrology, Beijing, China
| | - Hui Yuan
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
| | - Youxun Jin
- National Institute of Metrology, Beijing, China.
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3
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Liu Z, Jiang A, Lv X, Fan D, Chen Q, Wu Y, Zhou C, Tan Z. Combined Metabolomics and Biochemical Analyses of Serum and Milk Revealed Parity-Related Metabolic Differences in Sanhe Dairy Cattle. Metabolites 2024; 14:227. [PMID: 38668355 PMCID: PMC11052102 DOI: 10.3390/metabo14040227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/09/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
The production performance of dairy cattle is closely related to their metabolic state. This study aims to provide a comprehensive understanding of the production performance and metabolic features of Sanhe dairy cattle across different parities, with a specific focus on evaluating variations in milk traits and metabolites in both milk and serum. Sanhe dairy cattle from parities 1 to 4 (S1, n = 10; S2, n = 9; S3, n = 10; and S4, n = 10) at mid-lactation were maintained under the same feeding and management conditions. The milk traits, hydrolyzed milk amino acid levels, serum biochemical parameters, and serum free amino acid levels of the Sanhe dairy cattle were determined. Multiparous Sanhe dairy cattle (S2, S3, and S4) had a greater milk protein content, lower milk lactose content, and lower solids-not-fat content than primiparous Sanhe dairy cattle (S1). Moreover, S1 had a higher ratio of essential to total amino acids (EAAs/TAAs) in both the serum and milk. The serum biochemical results showed the lower glucose and total protein levels in S1 cattle were associated with milk quality. Furthermore, ultra-high-resolution high-performance liquid chromatography with tandem MS analysis (UPLC-MS/MS) identified 86 and 105 differential metabolites in the serum and milk, respectively, and these were mainly involved in amino acid, carbohydrate, and lipid metabolism. S1 and S2/S3/S4 had significantly different metabolic patterns in the serum and milk, and more vitamin B-related metabolites were significantly higher identified in S1 than in multiparous cattle. Among 36 shared differential metabolites in the serum and milk, 10 and 7 metabolites were significantly and strongly correlated with differential physiological indices, respectively. The differential metabolites identified were enriched in key metabolic pathways, illustrating the metabolic characteristics of the serum and milk from Sanhe dairy cattle of different parities. L-phenylalanine, dehydroepiandrosterone, and linoleic acid in the milk and N-acetylornithine in the serum could be used as potential marker metabolites to distinguish between Sanhe dairy cattle with parities of 1-4. In addition, a metabolic map of the serum and milk from the three aspects of carbohydrates, amino acids, and lipids was created for the further analysis and exploration of their relationships. These results reveal significant variations in milk traits and metabolites across different parities of Sanhe dairy cattle, highlighting the influence of parity on the metabolic profiles and production performance. Tailored nutritional strategies based on parity-specific metabolic profiles are recommended to optimize milk production and quality in Sanhe cattle.
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Affiliation(s)
- Zixin Liu
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Aoyu Jiang
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaokang Lv
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
- University of the Chinese Academy of Sciences, Beijing 100049, China
- College of Animal Science, Anhui Science and Technology University, Bengbu 233100, China
| | - Dingkun Fan
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
| | - Qingqing Chen
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
| | - Yicheng Wu
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Chuanshe Zhou
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiliang Tan
- Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; (Z.L.); (A.J.); (X.L.); (D.F.); (Q.C.); (Y.W.); (Z.T.)
- University of the Chinese Academy of Sciences, Beijing 100049, China
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4
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Rosli NB, Kwon HJ, Jeong JS. Simultaneous quantification method for multiple antiviral drugs in serum using isotope dilution liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1231:123925. [PMID: 37992562 DOI: 10.1016/j.jchromb.2023.123925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/02/2023] [Accepted: 11/07/2023] [Indexed: 11/24/2023]
Abstract
We describe the simultaneous quantification of six antiviral drugs in serum based on high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). The target drugs-hydroxychloroquine, chloroquine, favipiravir, umifenovir, ritonavir, and lopinavir-were extracted and purified from serum with 75 % v/v methanol as the precipitant reagent. The six analytes were clearly separated within 15 min using gradient elution and mixed-mode stationary phase. The measurement accuracy and precision were assured by adopting isotopes as internal standards. The optimized measurement procedure was strictly validated in linearity, sensitivity, accuracy, and precision. To confirm the robustness of the method in matrix, the method was additionally applied to various types of serum, namely hyperlipidemic and hyperglycemic serum. The method was then applied to assess the stability of the drugs in serum in order to set sample handling and storage guides for laboratory testing. Lastly, the method was implemented in different LC-MS systems to confirm its applicability across similar equipment commonly used in clinical testing laboratories. The overall results show that the optimized protocol is suitable for the accurate, simultaneous quantification of the six antiviral drugs in serum, and it is anticipated to satisfactorily serve as a reference protocol for the analysis of a wide range of other antiviral drugs for drug monitoring with various purposes.
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Affiliation(s)
- Nordiana Binti Rosli
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea; Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea; Drug and Toxicology Lab, Department of Pathology, Hospital Kuala Lumpur Jalan Pahang, Kuala Lumpur 50586, Malaysia
| | - Ha-Jeong Kwon
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Ji-Seon Jeong
- Organic Metrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea; Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.
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5
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Palayer M, Chaussenery-Lorentz O, Boubekeur L, Urbina T, Maury E, Maubert MA, Pilon A, Bourgogne E. Quantitation of 10 antibiotics in plasma: sulfosalicylic acid combined with 2D-LC-MS/MS is a robust assay for beta-lactam therapeutic drug monitoring. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1221:123685. [PMID: 37023569 DOI: 10.1016/j.jchromb.2023.123685] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023]
Abstract
Therapeutic drug monitoring (TDM) of antibiotics is particularly important in populations with high pharmacokinetic variabilities, such as critically ill patients, leading to unpredictable plasma concentrations and clinical outcomes. Here, we i) describe an original method for the simultaneous quantification of ten antibiotics (cefepime, ceftazidime, ampicillin, piperacillin/tazobactam, cefotaxime, amoxicillin, cloxacillin, oxacillin, linezolid) using 5-sulfosalicylic acid dihydrate (SSA) solution for protein precipitation together with 2D-LC-MS/MS, and ii) evaluate its impact in a one-year retrospective study. The method involved simple dilution with an aqueous mix of deuterated internal standards and plasma protein precipitation with SSA. Twenty microliters of the supernatant was injected into a C8 SPE online cartridge (30 × 2.1 mm) without any evaporation step and back-flushed onto a C18 UHPLC (100 × 2.1 mm) analytical column. Mass spectrometry detection (Xevo TQD) was performed in positive electrospray, in scheduled MRM mode. Overall analytical runtime was 7 min. Due to analytical constraints and the physicochemical properties of the antibiotics, protein precipitation using organic solvents could not be applied. As an alternative, SSA used with 2D-LC offered various advantages: i) lack of dilution resulting in better assay sensitivity, and ii) good chromatography of hydrophilic compounds. Ten microliters of 30% SSA in water eliminated>90% of plasma proteins, including the most abundant high molecular weight proteins at 55 and 72 kDa. The assay was successfully validated according to FDA and EMA guidelines for all the antibiotics, and the coefficients of variation of the quality control (QC) run during sample analysis over one year were below 10%, whatever the QC levels or the antibiotics. The use of 2D-LC combined with SSA precipitation allowed development of a robust, sensitive and rapid quantification assay. Feedback to clinicians was reduced to 24 h, thus allowing rapid dosage adjustment. During one year, 3,304 determinations were performed in our laboratory: 41% were not in the therapeutic range, 58% of which were sub-therapeutic, underlining the importance of early TDM of antibiotics to limit therapeutic failures and the emergence of bacterial resistance.
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6
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Yaqoob A, Rehman K, Akash MSH, Alvi M, Shoaib SM. Biochemical profiling of metabolomics in heavy metal-intoxicated impaired metabolism and its amelioration using plant-based bioactive compound. Front Mol Biosci 2022; 9:1029729. [PMID: 36330218 PMCID: PMC9623090 DOI: 10.3389/fmolb.2022.1029729] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 09/28/2022] [Indexed: 07/25/2023] Open
Abstract
Exposure to Pb is widely spreading and has far-reaching negative effects on living systems. This study aimed to investigate the toxic effects of Pb, through biochemical profiling and the ameliorative effects of quercetin against Pb-toxicity. Twenty-five male Wistar albino mice were divided into the following five groups. The CON-group received normal saline; the Pb-group received PbAc; the Pb + Q-CRN group received lead acetate followed by quercetin; the Q-CRN group received quercetin; and the CRN group received corn oil. After 4 weeks, the mice were euthanized. It was speculated that Pb significantly increased the levels of serine, threonine, and asparagine and decreased the levels of valine, lysine, and glutamic acid in the plasma of Pb-group, thus impairing amino acid metabolism. However, in the Pb + Q-CRN group, the level of these six amino acids was restored significantly due to the ameliorative effect of quercetin. The presence of lipid metabolites (L-carnitine, sphinganine, phytosphingosine, and lysophosphatidylcholine) in mice serum was confirmed by ESI/MS. The GPx, SOD, GSH, and CAT levels were significantly decreased, and the MDA level was significantly increased, thus confirming the oxidative stress and lipid peroxidation in the Pb group. The antioxidant effect of quercetin was elucidated in the Pb + Q-CRN group. Expression of CPT-I, CPT-II, LCAT, CROT, CACT, and MTR genes was significantly upregulated in the liver of Pb goup mice. Hence, the findings of this study proved that Pb exposure induced oxidative stress, upregulated gene expression, and impaired the lipid and amino acid metabolism in mice.
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Affiliation(s)
- Azka Yaqoob
- Department of Pharmaceutical Chemistry, Government College University, Faisalabad, Pakistan
| | - Kanwal Rehman
- Department of Pharmacy, The University Multan, Multan, Pakistan
| | | | - Maria Alvi
- Department of Pharmaceutical Chemistry, Government College University, Faisalabad, Pakistan
| | - Syed Muhammad Shoaib
- Drugs Testing Laboratory, Faisalabad, Primary & Secondary Healthcare Department, Government of the Punjab, Faisalabad, Pakistan
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7
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Woo S, Rosli N, Choi S, Kwon HJ, Yoon YA, Ahn S, Lee JY, Hong SP, Jeong JS. Development of Certified Reference Material for Amino Acids in Dried Blood Spots and Accuracy Assessment of Disc Sampling. Anal Chem 2022; 94:10127-10134. [PMID: 35802862 PMCID: PMC9310008 DOI: 10.1021/acs.analchem.2c01349] [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] [Indexed: 11/28/2022]
Abstract
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To achieve the measurement reliability of amino acids
used as diagnostic
markers in clinical fields, establishing a reference measurement system
is required, in which certified reference materials (CRMs) are an
essential step in the hierarchy of measurement traceability. This
study describes the development of dried blood spot (DBS) CRMs for
amino acid analysis with complete measurement traceability to the
International System of Units (SI). Six essential amino acids—proline,
valine, isoleucine, leucine, phenylalanine, and tyrosine—were
analyzed using isotope-dilution liquid chromatography–mass
spectrometry (ID-MS). For minimizing measurement bias and uncertainty
overestimation, whole spots with 50 μL of whole blood were adopted
in the certification. The between-spot homogeneities by whole spot
sampling were lower than 2.1%. The relative expanded uncertainties
of the six amino acids in the developed DBS CRMs were lower than 5.7%
at 95% confidence. The certified values are traceable to SI through
both gravimetric preparation and the primary method in certification,
ID-MS. Comparison among DBS testing laboratories revealed discrepancies
between the whole spot and disc sampling methods. The actual sampling
volume was accurately estimated by weighing, which revealed the possibility
of underestimation in routine DBS testing. The candidate CRMs can
support the standardization of DBS testing for amino acids through
the qualification and validation of many kinds of measurement procedures
to compensate the measurement bias caused by matrix-specific sampling
error.
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Affiliation(s)
- Sangji Woo
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Oriental Pharmaceutical Sciences, College of Pharmacy, KyungHee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 16954, Republic of Korea
| | - Nordiana Rosli
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Training Division Ministry of Health Malaysia, Level 6 Menara Prisma, Presint 3, 62675 Putrajaya, Malaysia
| | - Seohyun Choi
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Ha-Jeong Kwon
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Young Ahn Yoon
- Department of Laboratory Medicine, Soonchunhyang University Cheonan Hospital, Soonchunhyang Univerisity College of Medicine, 31, Suncheonhyang 6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do 130-701, Republic of Korea
| | - Sunhyun Ahn
- Seoul Clinical Laboratories, 13, Heungdeok 1-ro, Giheung-gu, Yongin-si, Gyeonggi-do 34113, Republic of Korea
| | - Ji Youn Lee
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seon-Pyo Hong
- Department of Oriental Pharmaceutical Sciences, College of Pharmacy, KyungHee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 16954, Republic of Korea
| | - Ji-Seon Jeong
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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8
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Development of a human insulin certified reference material with SI-traceable purity. Anal Bioanal Chem 2022; 414:3443-3457. [PMID: 35201368 DOI: 10.1007/s00216-022-03965-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/26/2022] [Accepted: 02/07/2022] [Indexed: 12/14/2022]
Abstract
A human insulin (hINS) certified reference material (CRM) was developed by the National Institute of Metrology (NIM). Three milligrams of purified solid hINS was packed into a brown sealed tube. The candidate material was identified by de novo sequence using mass spectrometry and Edman degradation methods. The content of insulin-related impurities, aggregation, moisture, volatile organic compounds (VOCs), anions, and ignition residues was also determined. Both mass balance (MB) and amino acid analysis-based isotope dilution mass spectrometry (AAA-IDMS) were used for the certified value assessment, which was determined to be (0.857 ± 0.024) g/g. The certified value was validated by liquid chromatography-circular dichroism spectroscopy (LC-CD) and quantitative nuclear magnetic resonance (qNMR) methods, which were in good agreement. No inhomogeneity was observed during a homogeneity examination. A stability examination showed that the CRM was stable for at least 12 months when stored at - 70 °C, and for 7 days when stored at 4, 25, or 40 °C. The CRM is expected to be used as a primary calibrator for matrix insulin CRM development and for quality control in biopharmaceutical production and clinical diagnostics.
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9
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Baharom N, Yim Y. Certification of Ca, Mg, and K in human plasma reference material using isotope dilution
inductively coupled
plasma mass spectrometry. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Norliza Baharom
- Inorganic Metrology Group Korea Research Institute of Standards and Science Daejeon Republic of Korea
- Bio‐Analytical Science University of Science and Technology Daejeon Republic of Korea
| | - Yong‐Hyeon Yim
- Inorganic Metrology Group Korea Research Institute of Standards and Science Daejeon Republic of Korea
- Bio‐Analytical Science University of Science and Technology Daejeon Republic of Korea
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10
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Shi P, Li M, Fu X, Xia B, Zhou Y. Study on the separation mechanism of solid-substrate electrospray ionization mass spectrometry. J Sep Sci 2020; 44:1026-1035. [PMID: 33340232 DOI: 10.1002/jssc.202000926] [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: 08/26/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 02/05/2023]
Abstract
Solid-substrate electrospray ionization mass spectrometry is an important ambient ionization technology to simplify mass spectrometry analysis. Nowadays, its separation application has been reported increasingly, however, the detailed separation mechanism is still indistinct although the chromatographic effect was reported as a possible factor. In this study, substrate-filled capillary electrospray ionization mass spectrometry was developed as an ideal model to investigate the separation mechanism using over thirty small molecules (neutral, basic, and weakly acidic) as model compounds with C18-bonded silica gel and silica gel as the substrates. The chromatographic effect was validated by the negative t-value of oil-water distribution coefficient, and the electric field effect was verified by the paired t-test (p < 0.01) between the retention times at 5.5 and 4.0 kV. A differential equation was proposed to quantify the compound retention under electric field. The quantitative method was validated to rapidly quantify proline (31.88 μg/mL) and hydroxyproline (20.71 μg/mL) in plasma with acceptable selectivity and accuracy. In conclusion, the separation mechanism of solid-substrate electrospray ionization mass spectrometry was the combination of the chromatographic and electric field effects, which could provide theoretical guidance for the separation optimization, and also promote its applications in biological, pharmaceutical, forensic, food and environmental analyses, etc.
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Affiliation(s)
- Peiyu Shi
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Min Li
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, P. R. China
| | - Xian Fu
- GCP Center, West China Hospital, Sichuan University, Chengdu, P. R. China
| | - Bing Xia
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, P. R. China
| | - Yan Zhou
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, P. R. China
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11
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Shen Y, Luo X, Li H, Chen Z, Guan Q, Cheng L. Simple and reliable serotonin assay in human serum by LC-MS/MS method coupled with one step protein precipitation for clinical testing in patients with carcinoid tumors. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1158:122395. [PMID: 33091677 DOI: 10.1016/j.jchromb.2020.122395] [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: 05/15/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 01/04/2023]
Abstract
Serotonin (5-hydroxytryptamine, 5-HT) is readily secreted in patients with carcinoid tumors, especially arising from the midgut. Although serotonin assay in human plasma or whole blood has been extensively studied, serotonin assay in human serum by liquid chromatography-tandem mass spectrometry (LC-MS/MS) has received much less attention. In this study, a simple and reliable LC-MS/MS method based on one step protein precipitation for sample pretreatment was developed for clinical assay of serum serotonin. Namely, 150 μL of serum was mixed with 50 μL of internal standard (IS) and 200 μL of 4 wt.% 5-sulfosalicylic acid (SSA) solution for protein precipitation. The supernatant after centrifugation was analyzed directly without further treatment. This method was validated for consistent linearity from 0.94 to 240 ng/mL with CVs ≤ 11.7%, good recovery in the range of 87.5%-104%, excellent analyte stability and low carryover. No obvious matrix effect was observed. Intra- and inter-day imprecision were below 8.03% and 11.5% respectively. Dilution linearity was verified with satisfying linearly dependent coefficients (r2 = 0.9937). The reference interval of serotonin was established from 126 results derived from subjects without carcinoid tumors. Therefore, apart from development of a serum serotonin assay by the LC-MS/MS method, the reference interval (RI) of 5-HT has also been established for clinical testing in patients with carcinoid tumors. In addition, this method has been successfully used in our laboratory, indicating that this robust LC-MS/MS assay with simple sample preparation and short analysis time could offer inspiring potential for clinical testing of 5-HT in routine clinical laboratories.
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Affiliation(s)
- Ying Shen
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Xia Luo
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Huijun Li
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Zhongju Chen
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Qing Guan
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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Zil’berg RA, Maistrenko VN, Kabirova LR, Gus’kov VY, Khamitov EM, Dubrovskii DI. A Chiral Voltammetric Sensor Based on a Paste Electrode Modified by Cyanuric Acid for the Recognition and Determination of Tyrosine Enantiomers. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820010189] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Polak B, Traczuk A, Misztal S. Separation of 9-Fluorenylmethyloxycarbonyl Amino Acid Derivatives in Micellar Systems of High-Performance Thin-Layer Chromatography and Pressurized Planar Electrochromatography. Sci Rep 2019; 9:17103. [PMID: 31745145 PMCID: PMC6864085 DOI: 10.1038/s41598-019-53468-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/31/2019] [Indexed: 11/15/2022] Open
Abstract
The problems with separation of amino acid mixtures in reversed-phase mode are the result of their hydrophilic nature. The derivatisation of the amino group of mentioned above solutes leads to their solution. For this purpose, 9-fluorenylmethoxycarbonyl chloroformate (f-moc-Cl) as the derivatisation reagent is often used. In our study, the separation of some f-moc- amino acid derivatives (alanine, phenylalanine, leucine, methionine, proline and tryptophan) with the use of micellar systems of reversed-phase high-performance thin-layer chromatography (HPTLC) and pressurized planar electrochromatography (PPEC) is investigated. The effect of surfactant concentration, its type (anionic, cationic and non-ionic) and mobile phase buffer pH on the discussed above solute migration distances are presented. Our work reveals that the increase of sodium dodecylsulphate concentration in the mobile phase has a different effect on solute retention in HPTLC and PPEC. Moreover, it also affects the order of solutes in both techniques. In PPEC, in contrast to the HPTLC technique, the mobile phase pH affects solute retention. The type of surfactant in the mobile phase also impacts solute retention and migration distances. A mobile phase containing SDS improves system efficiency in both techniques. Herein, such an effect is presented for the first time.
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Affiliation(s)
- Beata Polak
- Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093, Lublin, Poland.
| | - Adam Traczuk
- Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093, Lublin, Poland
| | - Sylwia Misztal
- Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093, Lublin, Poland
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14
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Association between plasma essential amino acids and atherogenic lipid profile in a Chinese population: A cross-sectional study. Atherosclerosis 2019; 286:7-13. [PMID: 31071661 DOI: 10.1016/j.atherosclerosis.2019.04.225] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 04/09/2019] [Accepted: 04/24/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND AND AIMS The association between amino acids and small dense low-density lipoprotein cholesterol (sdLDL-C) and remnant-like particle cholesterol (RLP-C) remains poorly understood. This study aims to investigate the association between plasma essential amino acids (EAAs) and atherogenic lipid profiles. METHODS Plasma amino acid levels of 475 individuals were measured using liquid chromatography-mass spectrometry. SdLDL-C, RLP-C, and other lipid components were evaluated. Associations between EAAs and lipid components or dyslipidemia were determined using correlation analysis and multivariate logistic regression. RESULTS Concentrations of plasma branched-chain amino acid (BCAA) were positively correlated with sdLDL-C, RLP-C, and triglycerides (TG) levels, but inversely correlated with high-density lipoprotein cholesterol (HDL-C). In contrast, threonine concentration was inversely correlated with sdLDL-C, RLP-C, and TG. Compared with the lowest tertile, individuals in the highest tertile of plasma total BCAAs level had an odds ratio (OR) of 2.33 (95% confidence interval [CI]: 1.35, 4.03) for the risk of high sdLDL-C, 3.63 (95%CI: 1.69, 7.80) for the risk of high RLP-C, 3.10 (95%CI: 1.66, 5.80) for the risk of high TG, and 3.67 (95%CI: 2.00, 6.73) for atherogenic lipid triad (all p < 0.01). In contrast, compared with the lowest tertile, individuals in the highest plasma threonine tertile had a 43% lower OR for high sdLDL-C, 56% lower OR for high TG, and 55% lower OR for lipid triad risk (all p < 0.05). CONCLUSIONS Among the EAAs evaluated, elevated plasma BCAAs were significantly associated with increased risk of atherogenic lipid profile. In contrast, elevated threonine was associated with reduced risk of atherogenic lipid profile.
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Du CX, Huang Z. Analysis of amino acids in human tears by hydrophilic interaction liquid chromatography and quadrupole orbitrap mass spectrometry. RSC Adv 2019; 9:36539-36545. [PMID: 35539085 PMCID: PMC9075113 DOI: 10.1039/c9ra05956c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/30/2019] [Indexed: 01/15/2023] Open
Abstract
Amino acids in human tears play certain physiological roles and their determination is challenging due to complicated chemical properties.
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Affiliation(s)
- Chi-Xin Du
- Department of Ophthalmology
- The First Affiliated Hospital
- College of Medicine
- Zhejiang University
- Hangzhou
| | - Zhu Huang
- Department of Ophthalmology
- The First Affiliated Hospital
- College of Medicine
- Zhejiang University
- Hangzhou
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16
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Luo D, Pang X, Xu X, Bi S, Zhang W, Wu J. Identification of Cooked Off-Flavor Components and Analysis of Their Formation Mechanisms in Melon Juice during Thermal Processing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:5612-5620. [PMID: 29746115 DOI: 10.1021/acs.jafc.8b01019] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cooked off-flavor components were identified, and their formation mechanisms were studied in heat-treated melon juices. When flavor dilution analysis methods and odor activity values were used to evaluate the cooked off-flavor in heat-treated melon juice, four volatile sulfide compounds (VSCs) were identified as contributors to the cooked off-flavor: dimethyl disulfide (DMDS), dimethyl trisulfide (DMTS), dimethyl sulfide (DMS), and 3-(methylthio)propanal (MTP). The cooked off-flavor intensities of heated juices from thick-skinned melons were stronger than those in juices from thin-skinned melons. We conducted a comparative analysis of VSCs before and after heat treatment by adding unlabeled and labeled S-methylmethionine (SMM) and/or methionine (Met) to the original melon juices. DMS and MTP were formed from SMM and Met through nucleophilic substitution and Strecker degradation, respectively. DMDS and DMTS were partly formed through the oxidative degradation of methanethiol produced from Met. Moreover, SMM could accelerate degradation of Met by increasing the amount of dicarbonyl compounds during heat treatment.
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Affiliation(s)
- Dongsheng Luo
- College of Food Science and Nutritional Engineering , China Agricultural University; Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture; and National Engineering Research Center for Fruit and Vegetable Processing , Beijing 100083 , China
| | - Xueli Pang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , China
| | - Xinxing Xu
- College of Food Science and Nutritional Engineering , China Agricultural University; Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture; and National Engineering Research Center for Fruit and Vegetable Processing , Beijing 100083 , China
| | - Shuang Bi
- College of Food Science and Nutritional Engineering , China Agricultural University; Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture; and National Engineering Research Center for Fruit and Vegetable Processing , Beijing 100083 , China
| | - Wentao Zhang
- College of Food Science and Nutritional Engineering , China Agricultural University; Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture; and National Engineering Research Center for Fruit and Vegetable Processing , Beijing 100083 , China
| | - Jihong Wu
- College of Food Science and Nutritional Engineering , China Agricultural University; Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture; and National Engineering Research Center for Fruit and Vegetable Processing , Beijing 100083 , China
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17
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Tran TTH, Lim J, Kim J, Kwon HJ, Kwon GC, Jeong JS. Fully international system of units-traceable glycated hemoglobin quantification using two stages of isotope-dilution high-performance liquid chromatography–tandem mass spectrometry. J Chromatogr A 2017; 1513:183-193. [DOI: 10.1016/j.chroma.2017.07.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/05/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
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