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Kwon GE, Son HH, Moon JY, Lee A, Jung MK, Rhie S, Park MJ, Garg A, Yoo EG, Choi MH. Dried blood spot-based free sterol signatures in sitosterolemia diagnostics. Clin Chim Acta 2024; 562:119886. [PMID: 39053727 DOI: 10.1016/j.cca.2024.119886] [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: 08/25/2023] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND Sitosterolemia is a rare inherited lipid metabolic disorder characterized by increased levels of plant sterols and accelerated atherosclerosis. Although early detection is beneficial for the prevention of disease progression, it is largely underdiagnosed by routine screening based on conventional lipid profiles. MATERIALS AND METHODS A gas chromatography-mass spectrometry (GC-MS)-based profiling has been developed and validated to measure the levels of biologically active free sterols, including five endogenous sterols and three plant sterols (sitosterol, campesterol, and stigmasterol) in dried blood spot (DBS). RESULTS Within- and between-run precisions were 1.4-11.1 % and 2.2-14.1 %, respectively, while the accuracies were all 86.3 ∼ 121.9 % with the correlation coefficients (r2) > 0.988 for all the sterols. In the patients (four girls and two boys, 6.5 ± 2.8 years), sitosterol levels were significantly increased, with an optimal cut-off value of 2.5 µg/mL distinguishing them from ninety-three age-matched healthy children. A cut-off value of 31.9 µg/mL differentiated the patients from six ABCG5/ABCG8 heterozygous carriers. In addition, the molecular ratios of sitosterol to cholesterol, desmosterol, and 7-dehydrocholesterol provided excellent cut-off values of 26.3, 67.6, and 21.6, respectively, to distinguish patients from both healthy controls and heterozygous carriers. CONCLUSIONS The novel DBS-based GC-MS profiling of free sterols accurately identified patients with sitosterolemia, with a performance comparable to that of a serum assay. The DBS profiling could be more feasible method in clinical practice as well as population screening programs, and it can provide diagnostic cut-off values for individual plant sterols.
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MESH Headings
- Humans
- Lipid Metabolism, Inborn Errors/blood
- Lipid Metabolism, Inborn Errors/diagnosis
- Female
- Male
- Intestinal Diseases/blood
- Intestinal Diseases/diagnosis
- Gas Chromatography-Mass Spectrometry
- Child
- Phytosterols/blood
- Phytosterols/adverse effects
- Dried Blood Spot Testing/methods
- Hypercholesterolemia/blood
- Hypercholesterolemia/diagnosis
- Child, Preschool
- ATP Binding Cassette Transporter, Subfamily G, Member 5/blood
- ATP Binding Cassette Transporter, Subfamily G, Member 5/genetics
- Sterols/blood
- ATP Binding Cassette Transporter, Subfamily G, Member 8/blood
- ATP Binding Cassette Transporter, Subfamily G, Member 8/genetics
- Lipoproteins/blood
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Affiliation(s)
- Go Eun Kwon
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Hyun-Hwa Son
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ju-Yeon Moon
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ayoung Lee
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Mo Kyung Jung
- Department of Pediatrics, CHA Bundang Medical Center, Gyeonggi-do 13496, Republic of Korea
| | - Seonkyeong Rhie
- Department of Pediatrics, CHA Bundang Medical Center, Gyeonggi-do 13496, Republic of Korea
| | - Mi Jung Park
- Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul 01757, Republic of Korea
| | - Abhimanyu Garg
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Eun-Gyong Yoo
- Department of Pediatrics, CHA Bundang Medical Center, Gyeonggi-do 13496, Republic of Korea.
| | - Man Ho Choi
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
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Zharmakhanova G, Kononets V, Balmagambetova S, Syrlybayeva L, Nurbaulina E, Zhussupova Z, Sakhanova S, Ayaganov D, Kim S, Zhumalina A. Selective screening for inborn errors of metabolism using tandem mass spectrometry in West Kazakhstan children: study protocol. Front Genet 2024; 14:1278750. [PMID: 38283151 PMCID: PMC10811460 DOI: 10.3389/fgene.2023.1278750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/20/2023] [Indexed: 01/30/2024] Open
Abstract
Data on the prevalence of most inborn errors of metabolism are still unavailable in Kazakhstan. The study aims to perform selective screening for hereditary metabolic diseases among patients aged from 1 day to 18 years in western Kazakhstan using the LC-MS/MS method, with establishing the reference values for the content of amino acids, acylcarnitines, and succinylacetone in blood samples of healthy children. Tasks: 1. To assess the burden of metabolic disorders detected by LC-MS/MS in western Kazakhstan by examination of children at clinical risk in pediatric clinics throughout the region; https://www.frontiersin.org/register?returnUrl=https://loop.frontiersin.org 2. To set the reference values of metabolites in the child population; 3. To analyze the age distribution, prevalence, and age of onset for each identified IEM, further comparing the obtained findings with those from previously published reports in other populations. METHODS To set the reference values of 51 metabolites in the child population, 750 healthy children will be included. The selective screening will be performed among 1,500 patients aged 1 day to 18 years with suspected hereditary metabolic disorders. ANTICIPATED RESULTS The results of selective screening will be interpreted by comparison with the reference values established. Diagnosis will be based on clinical signs, blood levels of amino acids, acylcarnitines, succinylacetone, and urine levels of organic acids and tests for gene mutations. An assessment of 37 inborn errors of metabolism frequencies in high-risk children will be performed. The research will further develop the national as selective as expanded newborn screening programs. The study was registered in clinicaltrials. gov (https://www. CLINICALTRIALS gov/study/NCT05910151) on 16 June 2023.
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Affiliation(s)
- Gulmira Zharmakhanova
- Department of Natural Sciences, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Victoria Kononets
- Department of Natural Sciences, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Saule Balmagambetova
- Department of Oncology, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Lyazzat Syrlybayeva
- Department of Natural Sciences, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Eleonora Nurbaulina
- Department of General Medical Practice, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Zhanna Zhussupova
- Aktobe Regional Tertiary Care Center, Department of Neonatal Pathology, Aktobe, Kazakhstan
| | - Svetlana Sakhanova
- Scientific-Practical Center, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Dinmukhamed Ayaganov
- Department of Neurology, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Svetlana Kim
- Department of Children’s Diseases No. 2, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Akmaral Zhumalina
- Department of Children’s Diseases No. 1 with Neonatology, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
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3
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Zhang M, La Mi L, Song M, Huang X, Xie J, Zhang T. Dried blood spot reference intervals for 18 amino acids in a 1 to 6 years old pediatric cohort. Clin Biochem 2023:110590. [PMID: 37236294 DOI: 10.1016/j.clinbiochem.2023.110590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 05/28/2023]
Abstract
OBJECTIVES Reference intervals are indispensable for the accurate clinical interpretation of clinical laboratory tests. The reference intervals of amino acids in dried blood spots (DBS) from nonnewborn children are limited. In this study, we aim to establish the pediatric reference intervals for amino acids in DBS from healthy Chinese children aged from 1 to 6 years and to investigate the effect of sex and age. DESIGN AND METHODS In 301 healthy subjects aged from 1 to 6 years old, eighteen DBS amino acids were determined using ultra-performance chromatography-tandem mass spectrometry method. Amino acid concentrations were examined in relation to sex and age. Reference intervals were established according to the CLSI C28-A3 guidelines. RESULTS Reference intervals of 18 amino acids bounded by the 2.5 and 97.5 percentiles were calculated in DBS specimen. No significant influence of age was observed for all the target amino acid concentrations in 1- to 6-year-olds. Sex differences were found in leucine and aspartic acid. CONCLUSIONS The RIs established in the present study added value for diagnosing and managing the amino acid-related diseases in the pediatric population.
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Affiliation(s)
- Min Zhang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing 100020, China; Department of Biochemistry and Immunology, Capital Institute of Pediatrics, Beijing 100020, China
| | - La La Mi
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan 030001, China
| | - MeiYan Song
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan 030001, China
| | - XiaoLan Huang
- Clinical Central Laboratory, Capital Institute of Pediatrics, Beijing, China.
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan 030001, China.
| | - Ting Zhang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing 100020, China; Department of Biochemistry and Immunology, Capital Institute of Pediatrics, Beijing 100020, China.
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4
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Jafri L, Khan AH, Ilyas M, Nisar I, Khalid J, Majid H, Hotwani A, Jehan F. Metabolomics of a neonatal cohort from the Alliance for Maternal and Newborn Health Improvement biorepository: Effect of preanalytical variables on reference intervals. PLoS One 2023; 18:e0279931. [PMID: 36607993 PMCID: PMC9821480 DOI: 10.1371/journal.pone.0279931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 12/18/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND The study was conducted to determine reference interval (RI) and evaluate the effect of preanalytical variables on Dried blood spot (DBS)-amino acids, acylcarnitines and succinylacetone of neonates. METHODOLOGY DBS samples were collected within 48-72 hours of life. Samples were analyzed for biochemical markers on tandem mass spectrometer at the University of Iowa. Comparison of RI across various categorical variables were performed. RESULTS A total of 610 reference samples were selected based on exclusion criteria; 53.2% being females. Mean gestational age (GA) of mothers at the time of delivery was 38.7±1.6 weeks; 24.5% neonates were of low birth weight and 14.3% were preterm. Out of the total 610 neonates, 23.1% were small for GA. Reference intervals were generated for eleven amino acids, thirty-two acylcarnitines and succinylacetone concentrations. Markers were evaluated with respect to the influence of gender, GA, weight and time of sampling and statistically significant minimal differences were observed for some biomarkers. CONCLUSION RI for amino acids, succinylacetone and acylcarnitine on DBS has been established for healthy neonates, which could be of use in the clinical practice. Clinically significant effect of GA, weight, gender and time of sampling on these markers were not identified.
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Affiliation(s)
- Lena Jafri
- Department of Pathology and Laboratory Medicine, Chemical Pathology, Aga Khan University, Karachi, Pakistan
- * E-mail: (LJ); (FJ)
| | - Aysha Habib Khan
- Department of Pathology and Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - Muhammad Ilyas
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Imran Nisar
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Javairia Khalid
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Hafsa Majid
- Department of Pathology and Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - Aneeta Hotwani
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Fyezah Jehan
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
- * E-mail: (LJ); (FJ)
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5
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Comprehensive Determination of Amino Acids for Diagnosis of Inborn Errors of Metabolism. Methods Mol Biol 2022; 2546:55-64. [PMID: 36127578 DOI: 10.1007/978-1-0716-2565-1_6] [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: 11/27/2022]
Abstract
Analysis of clinically relevant amino acids using ion exchange chromatography coupled to photometric/fluorescent detection has been an indispensable component in the detection of inborn errors of metabolism for six decades. Detection of amino acids using mass spectrometry offers advantages in speed and analytic specificity. Employing methanol extraction and controlled butylation, C8 reversed-phase chromatography, and MS/MS detection, 32 amino acids are quantified in 20 min with clinically appropriate imprecision in plasma, urine, and cerebrospinal fluid (CSF). Quantitation is linear to 2500 μM, and limits of detection are at least 1.0 μM. Important isobaric amino acids are distinguished by chromatography or by unique patterns of fragmentation following collision-induced dissociation (CID). The technique employs commercially available reagents and may be expanded and customized for specific clinical or research settings.
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6
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Luo Y, Zhang C, Ma L, Zhang Y, Liu Z, Chen L, Wang R, Luan Y, Rao Y. Measurement of 7-dehydrocholesterol and cholesterol in hair can be used in the diagnosis of Smith-Lemli-Opitz syndrome. J Lipid Res 2022; 63:100228. [PMID: 35577137 PMCID: PMC9207299 DOI: 10.1016/j.jlr.2022.100228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/06/2022] [Accepted: 05/08/2022] [Indexed: 11/20/2022] Open
Abstract
7-dehydrocholesterol (7-DHC) and cholesterol (CHOL) are biomarkers of Smith-Lemli-Opitz Syndrome (SLOS), a congenital autosomal recessive disorder characterized by elevated 7-DHC level in patients. Hair samples have been shown to have great diagnostic and research value, which has long been neglected in the SLOS field. In this study, we sought to investigate the feasibility of using hair for SLOS diagnosis. In the presence of antioxidants (2,6-ditert-butyl-4-methylphenol and triphenylphosphine), hair samples were completely pulverized and extracted by micro-pulverized extraction in alkaline solution or in n-hexane. After microwave-assisted derivatization with N,O-Bis(trimethylsilyl)trifluoroacetamide, the analytes were measured by GC-MS. We found that the limits of determination for 7-DHC and CHOL were 10 ng/mg and 8 ng/mg, respectively. In addition, good linearity was obtained in the range of 50-4000 ng/mg and 30-6000 ng/mg for 7-DHC and CHOL, respectively, which fully meets the requirement for SLOS diagnosis and related research. Finally, by applying the proposed method to real hair samples collected from 14 healthy infants and two suspected SLOS patients, we confirmed the feasibility of hair analysis as a diagnostic tool for SLOS. In conclusion, we present an optimized and validated analytical method for the simultaneous determination of two SLOS biomarkers using human hair.
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Affiliation(s)
- Yitao Luo
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, PR China
| | - Chengqiang Zhang
- Department of Neonatology, Obstetrics and Gynecology Hospital Affiliated to Fudan University, Shanghai, PR China
| | - Li Ma
- Department of Neonatology, Shanghai Children's Hospital Shanghai Jiao Tong University, Shanghai, PR China
| | - Yuxiao Zhang
- Institutes of Biomedical Sciences, Fudan University, Shanghai, PR China
| | - Zhengyuan Liu
- Department of Biochemistry and Pharmacology, University of Melbourne, Melbourne, Victoria, Australia
| | - Li Chen
- Department of Medical Microbiology, Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Sciences, Fudan University, Shanghai, PR China
| | - Rui Wang
- College of Forensic Medicine, Kunming Medical University, Kunming, PR China
| | - Yujing Luan
- Institute of Forensic Science, Ministry of Public Security, Beijing, PR China.
| | - Yulan Rao
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, PR China.
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7
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Schleif WS, Harlan RS, Hamblin F, Amankwah EK, Goldenberg NA, Hernandez RG, Johnson SB, Reed S, Graham DR. Defining the Healthy Infant Metabolome: Liquid Chromatography Tandem-Mass Spectrometry Analysis of Dried Blood Spot Extracts from the Prospective Research on Early Determinants of Illness and Children's Health Trajectories Birth Cohort Study. J Pediatr 2022; 241:251-256.e4. [PMID: 34626671 PMCID: PMC8838877 DOI: 10.1016/j.jpeds.2021.09.061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/25/2021] [Accepted: 09/30/2021] [Indexed: 11/24/2022]
Abstract
Newborn screening using dried plasma spots offers preanalytical advantages over conventional cards for plasma-associated targets of interest. Herein we present dried plasma spot-based methods for measuring metabolites using a 250+ compound liquid chromatography tandem mass spectrometry library. Quality assurance reduced this library to 134, and from these, 30 compounds determined the normal newborn reference ranges.
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Affiliation(s)
- William S Schleif
- Johns Hopkins All Children's Pediatric Biorepository, Johns Hopkins All Children's Hospital, St Petersburg, FL; Pediatric Biospecimen Science Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL
| | - Robert S Harlan
- Johns Hopkins Molecular Determinants Center and Core, Johns Hopkins All Children's Hospital, St Petersburg, FL; Johns Hopkins University School of Medicine, Baltimore, MD
| | - Frances Hamblin
- Clinical Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL
| | - Ernest K Amankwah
- Data Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Oncology, Johns Hopkins University School of Medicine, St Petersburg, FL
| | - Neil A Goldenberg
- Pediatric Biospecimen Science Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Clinical Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Data Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Pediatric Health Equity Research Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Raquel G Hernandez
- Pediatric Health Equity Research Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sara B Johnson
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Population, Family and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD
| | - Shannon Reed
- Johns Hopkins Molecular Determinants Center and Core, Johns Hopkins All Children's Hospital, St Petersburg, FL
| | - David R Graham
- Pediatric Biospecimen Science Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Johns Hopkins Molecular Determinants Center and Core, Johns Hopkins All Children's Hospital, St Petersburg, FL; Department of Anesthesia and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD.
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8
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He F, Yang R, Huang X, Tian Y, Pei X, Bohn MK, Zou L, Wang Y, Li H, Wang T, Gu M, Jiang T, Chen X, Zou H, Wei H, Tian W, Tang T, Adeli K, Wang Z. Reference Standards for Newborn Screening of Metabolic Disorders by Tandem Mass Spectrometry: A Nationwide Study on Millions of Chinese Neonatal Populations. Front Mol Biosci 2022; 8:719866. [PMID: 34977148 PMCID: PMC8716770 DOI: 10.3389/fmolb.2021.719866] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: The major clinical problem presently confronting the Chinese newborn screening (NBS) programs by tandem mass spectrometry (MS/MS) is the lack of comprehensive reference intervals (RIs) for disease biomarkers. To close this gap, the Chinese National Center for Clinical Laboratories (NCCL) launched a nationwide study to investigate the dynamic pattern of 35 MS/MS NBS biomarkers and establish accurate and robust RIs. Methods: Blood spot samples from 4,714,089 Chinese neonates were tested in participating centers/laboratories and used for study analysis. MS/MS NBS biomarker trends were visually assessed by their concentrations over age. Specific partitions were determined arbitrarily by each day and sex or by the statistical method of Harris and Boyd. RIs, corresponding to the 2.5th and 97.5th percentiles, as well as the 1th, 25th, 75th and 99th percentiles were calculated for each reference partition using a non-parametric rank approach. Results: Most MS/MS NBS biomarkers fluctuated during the first week of life, followed by a relatively stable concentration. Age and sex-specific RIs were established and presented an improved specificity over the RIs used in participating centers/laboratories. Females demonstrated higher 2.5th and 97.5th percentiles in all amino acids except arginine and ornithine than males, whereas males showed higher 2.5th and 97.5th percentiles in most acylcarnitines. Conclusion: The present study determined the dynamic trends of 35 MS/MS biomarkers and established age and sex-specific RIs, valuably contributing to the current literature and timely evaluation of neonatal health and disease.
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Affiliation(s)
- Falin He
- National Center for Clinical Laboratories, Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Rulai Yang
- Department of Genetics and Metabolism, Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Xinwen Huang
- Department of Genetics and Metabolism, Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Yaping Tian
- Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China
| | - Xiaofang Pei
- Department of Laboratory Sciences, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Mary Kathryn Bohn
- Department of Pediatric Laboratory Medicine, CALIPER Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Lin Zou
- The Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yan Wang
- Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China
| | - Haibo Li
- Ningbo Women and Children's Hospital, Ningbo, China
| | - Ting Wang
- Suzhou Municipal Hospital, Suzhou, China
| | - Maosheng Gu
- The Xuzhou Maternity and Child Health Care Hospital, Xuzhou, China
| | - Tao Jiang
- Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Xigui Chen
- Jining Maternal and Child Health Family Planning Service Center, Jining, China
| | - Hui Zou
- Jinan Maternity and Child Care Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Hongwei Wei
- Linyi Maternity and Child Health Care Hospital, Linyi, China
| | - Weibing Tian
- W. F. Maternal and Child Health Hospital, Weifang, China
| | - Tian Tang
- Department of Laboratory Sciences, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Khosrow Adeli
- Department of Pediatric Laboratory Medicine, CALIPER Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Zhiguo Wang
- National Center for Clinical Laboratories, Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
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9
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Ren W, Wang T, Hu X, Li Y, Ji Z, Guo H, Cao H, Huang J. Development and application of sequential window acquisition of all theoretical mass spectra data acquisition modes on ultra-high-performance liquid chromatography triple-quadrupole/time-of-flight mass spectrometry for metabolic profiling of amino acids in human plasma. J Sep Sci 2021; 44:4209-4221. [PMID: 34592055 DOI: 10.1002/jssc.202100573] [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: 07/21/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 11/06/2022]
Abstract
Accumulating evidence suggests that amino acids are important indicators of nutritional and metabolic status. A high-resolution mass spectrometry method based on sequential window acquisition of all theoretical mass spectra acquisition was developed for the simultaneous determination of 16 amino acids in human plasma. Sample preparation by protein precipitation using a mixture of acetonitrile and formic acid was followed by a BEH Amide column. The superiority of this method was investigated by comparing it to time-of-flight scan and multiple reaction monitoring modes. The limit of detection in sequential window acquisition of all theoretical mass spectra mode for threonine, methionine, histidine, citrulline, and tryptophan is 0.1 ng on the column; for lysine and asparagine is 0.2 ng; for alanine, pyroglutamic acid, leucine, ornithine, and aspartate is 0.5 ng, for arginine is 1.0 ng; for glutamate and serine is 2.0 ng; for glutamine is 10.0 ng. This method was linear in the range 0.8-40 μg/mL for arginine, citrulline, glutamate, histidine, leucine, methionine, pyroglutamic acid, threonine, tryptophan; 2-100 μg/mL for asparagine, aspartate, lysine, ornithine, serine; and 4-200 μg/mL for alanine, glutamine with good accuracy and precision. Significantly different levels in 11 amino acids were observed between childhood and adulthood, representing the growth and development of individuals relating to the level of amino acids.
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Affiliation(s)
- Wenbo Ren
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Tingting Wang
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Xiuhong Hu
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Yanyan Li
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Zhengchao Ji
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Haiyang Guo
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Haiwei Cao
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
| | - Jing Huang
- Department of Laboratory Medicine, the First Hospital of Jilin University, Jilin University, Changchun, P. R. China
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10
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Kleijne VD, Kohler I, C Heijboer A, Ackermans MT. Solutions for hematocrit bias in dried blood spot hormone analysis. Bioanalysis 2021; 13:1293-1308. [PMID: 34470479 DOI: 10.4155/bio-2021-0119] [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] [Indexed: 01/03/2023] Open
Abstract
Over the last years, dried blood spot (DBS) sampling has gained significant interest due to development of analytical techniques combined with DBS, the simplicity and low cost of the method. Despite its wide use, DBS sampling can lead to inaccurate results due to the impact of the hematocrit (Hct) on the analysis. Some analytes have shown to be hardly impacted by Hct values. However, in other cases, a significant impact of Hct is observed, which requires the use of alternative approaches to circumvent this issue. This review describes the possible impact of Hct-related bias in DBS sampling in the context of hormone analysis and discusses the different methodologies that can be used to overcome this bias to ensure accurate results.
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Affiliation(s)
- Vera de Kleijne
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Isabelle Kohler
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecular & Life Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Center for Analytical Sciences Amsterdam, Amsterdam, The Netherlands
| | - Annemieke C Heijboer
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands
| | - Mariëtte T Ackermans
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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11
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Gilbertson PK, Forrester S, Andrews L, McCann K, Rogers L, Park C, Moye J. The National Children's Study Archive Model: A 3-Tier Framework for Dissemination of Data and Specimens for General Use and Secondary Analysis. Front Public Health 2021; 9:526286. [PMID: 33748052 PMCID: PMC7973013 DOI: 10.3389/fpubh.2021.526286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 01/26/2021] [Indexed: 01/12/2023] Open
Abstract
The National Children's Study (NCS) Archive was created as a repository of samples, data, and information from the NCS Vanguard Study-a longitudinal pregnancy and birth cohort evaluating approaches to study influence of environmental exposures on child health and development-to provide qualified researchers with access to NCS materials for use in secondary research. The National Children's Study Archive (NCSA) model is a 3-tiered access model designed to make the wealth of information and materials gathered during the NCS Vanguard Study available at a user appropriate level. The NCSA model was developed as a 3-tier framework, for users of varying access levels, providing intuitive data exploration and visualization tools, an end-to-end data and sample request management system, and a restricted portal for participant-level data access with a team of experts available to assist users. This platform provides a model to accelerate transformation of information and materials from existing studies into new scientific discoveries. Trial Registration: ClinicalTrials.gov Identifier: NCT00852904 (first posted February 27, 2009).
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Affiliation(s)
| | - Susan Forrester
- Social & Scientific Systems Inc., Silver Spring, MD, United States
| | - Linda Andrews
- Social & Scientific Systems Inc., Silver Spring, MD, United States
| | - Kathleen McCann
- Social & Scientific Systems Inc., Silver Spring, MD, United States
| | - Lydia Rogers
- Social & Scientific Systems Inc., Silver Spring, MD, United States
| | - Christina Park
- National Institutes of Health, Office of the Director, Bethesda, MD, United States
| | - Jack Moye
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
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12
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Carpentieri D, Colvard A, Petersen J, Marsh W, David-Dirgo V, Huentelman M, Pirrotte P, Sivakumaran TA. Mind the Quality Gap When Banking on Dry Blood Spots. Biopreserv Biobank 2021; 19:136-142. [PMID: 33567235 DOI: 10.1089/bio.2020.0131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Dry blood spots (DBS) offer many advantages over other blood banking protocols due to the reduction of time and equipment needed for collection and the ease of processing, storage, and shipment. In addition, the sample size makes it a very attractive method when considering the banking of small pediatric samples. On that note, the Centers for Disease Control and Prevention (CDC) preanalytical standards for DBS are commonly used in the worldwide mass spectrometry-based inborn errors of metabolism screening programs. However, these guidelines may not apply for analytes and protocols not included in these programs. In fact, the availability of leftover samples and the ongoing interest in protocols outside this scenario are providing us with new DBS biobanking insights. Herein, we review the literature for indicators that should be considered in the design of prospective fit for purpose DBS biobanks, especially for those focused mostly on pediatric and OMIC platforms.
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Affiliation(s)
- David Carpentieri
- Department of Pathology and Laboratory Medicine, Clinical Genomics, Phoenix Children's Hospital, Phoenix, Arizona, USA
| | - Amber Colvard
- Department of Pathology, Clinical Genomics, Phoenix Children's Hospital, Phoenix, Arizona, USA
| | - Jackie Petersen
- Department of Pathology, Clinical Genomics, Phoenix Children's Hospital, Phoenix, Arizona, USA
| | - William Marsh
- Department of Biorepository, Mayo Clinic, Phoenix, Arizona, USA
| | - Victoria David-Dirgo
- Collaborative Center for Translational Mass Spectrometry, The Translational Genomics Research Institute, Phoenix, Arizona, USA
| | - Matt Huentelman
- Neurogenomics Division, The Translational Genomics Research Institute, Phoenix, Arizona, USA
| | - Patrick Pirrotte
- Collaborative Center for Translational Mass Spectrometry, The Translational Genomics Research Institute, Phoenix, Arizona, USA
| | - T A Sivakumaran
- Department of Pathology, Clinical Genomics, Phoenix Children's Hospital, Phoenix, Arizona, USA
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13
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McClendon-Weary B, Putnick DL, Robinson S, Yeung E. Little to Give, Much to Gain-What Can You Do With a Dried Blood Spot? Curr Environ Health Rep 2021; 7:211-221. [PMID: 32851603 DOI: 10.1007/s40572-020-00289-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Technological advances have allowed dried blood spots (DBS) to be utilized for various measurements, helpful in population-based studies. The following is a review of the literature highlighting the advantages and disadvantages of DBS and describing their use in multiple areas of research. RECENT FINDINGS DBS can track pollutant exposure to understand their impact on health. DBS can also be used for (epi-)genetic studies, to measure clinical biomarkers, and to monitor drug adherence. Advantages of DBS include being minimally invasive, requiring low blood volume, and being cost-effective to collect, transport, and store. Disadvantages of DBS include the hematocrit effect, which is related to the viscosity of the blood affecting its spread on to the filter paper, causing a major source of error when assessing concentrations, and the possibility of low DNA volume. Numerous uses for DBS make them an important source of biomaterial but they require additional validation for accuracy and reproducibility.
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Affiliation(s)
- Bryttany McClendon-Weary
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Dr, MSC 7004, Bethesda, MD, 20817, USA
| | - Diane L Putnick
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Dr, MSC 7004, Bethesda, MD, 20817, USA
| | - Sonia Robinson
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Dr, MSC 7004, Bethesda, MD, 20817, USA
| | - Edwina Yeung
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Dr, MSC 7004, Bethesda, MD, 20817, USA.
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14
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Manta-Vogli PD, Schulpis KH, Loukas YL, Dotsikas Y. Birth weight related blood concentrations of the neurotransmission amino acids glutamine plus glutamate, phenylalanine and tyrosine in full-term breastfed infants perinatally. J Pediatr Endocrinol Metab 2020; 33:367-373. [PMID: 32069244 DOI: 10.1515/jpem-2019-0522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/06/2020] [Indexed: 11/15/2022]
Abstract
Background The amino acids glutamine plus glutamate, phenylalanine and tyrosine are implicated in neurotransmission. We aimed to evaluate these amino acid blood concentrations in full-term breastfed infants with different birth weight (BW) perinatally. Methods Breastfed full-term infants (n = 6000, males 3000, females 3000) BW 2000-4000 g were divided into four equal groups. Both males and females Groups A, 2000-2500 g, B 2500-3000 g, C 3000-3500 g, D 3500-4000 g. Blood samples on Guthrie cards, were taken on the 3rd day of life and quantified via a liquid chromatography tandem mass spectrometry (LC-MS/MS) method. Results Glutamine plus glutamate mean values were found to be statistically significantly different between males vs. females in all the studied groups. The highest values were determined in both males and females in group D. Statistically significantly higher values of phenylalanine appeared in group D vs. other groups. Tyrosine mean values were calculated to be statistically significantly different in both sexes in group A compared to other groups. Conclusions Differences of glutamine plus glutamate, phenylalanine and tyrosine levels among full-term newborns with different BW are presented for the first time in the literature. Newborns with BW 3000-4000 g are benefited by having higher concentrations of the mentioned neurotransmission related amino acids. Neonatal screening reference values for these amino acids in relation to BW could be established, not only for preterm and low BW infants but also for full-term newborns with BW >3000 g.
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Affiliation(s)
- Penelope D Manta-Vogli
- Department of Clinical Nutrition and Dietetics, Agia Sofia Children's Hospital, Athens, Greece
| | | | - Yannis L Loukas
- Laboratory of Pharmaceutical Analysis, Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Yannis Dotsikas
- Department of Pharmacy, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupoli, Zografou, Athens, Greece.,Laboratory of Pharmaceutical Analysis, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, GR - 157 71, Athens, Greece, Phone: +30 210 7274696, Fax: +30 2107274039
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15
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Monnerat G, Evaristo GPC, Evaristo JAM, Dos Santos CGM, Carneiro G, Maciel L, Carvalho VO, Nogueira FCS, Domont GB, Campos de Carvalho AC. Metabolomic profiling suggests systemic signatures of premature aging induced by Hutchinson-Gilford progeria syndrome. Metabolomics 2019; 15:100. [PMID: 31254107 DOI: 10.1007/s11306-019-1558-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/15/2019] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Hutchinson-Gilford Progeria Syndrome (HGPS) is an extremely rare genetic disorder. HGPS children present a high incidence of cardiovascular complications along with altered metabolic processes and an accelerated aging process. No metabolic biomarker is known and the mechanisms underlying premature aging are not fully understood. OBJECTIVES The present work aims to evaluate the metabolic alterations in HGPS using high resolution mass spectrometry. METHODS The present study analyzed plasma from six HGPS patients of both sexes (7.7 ± 1.4 years old; mean ± SD) and eight controls (8.6 ± 2.3 years old) by LC-MS/MS in high-resolution non-targeted metabolomics (Q-Exactive Plus). Targeted metabolomics was used to validate some of the metabolites identified by the non-targeted method in a triple quadrupole (TSQ-Quantiva). RESULTS We found several endogenous metabolites with statistical differences between control and HGPS children. Multivariate statistical analysis showed a clear separation between groups. Potential novel metabolic biomarkers were identified using the multivariate area under ROC curve (AUROC) based analysis, showing an AUC value higher than 0.80 using only two metabolites, and tending to 1.00 when increasing the number of metabolites in the AUROC model. Taken together, changed metabolic pathways involve sphingolipids, amino acids, and oxidation of fatty acids, among others. CONCLUSION Our data show significant alterations in cellular energy use and availability, in signal transduction, and lipid metabolites, adding new insights on metabolic alterations associated with premature aging and suggesting novel putative biomarkers.
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Affiliation(s)
- Gustavo Monnerat
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373 - CCS - Bloco G, Rio de Janeiro, 21941-902, Brazil
- Laboratory of Proteomics, LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Gabriel Carneiro
- Laboratory of Proteomics, LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leonardo Maciel
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373 - CCS - Bloco G, Rio de Janeiro, 21941-902, Brazil
| | | | - Fábio César Sousa Nogueira
- Laboratory of Proteomics, LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Proteomics Unit, Institute of Chemistry, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373 - CCS - Bloco G, Rio de Janeiro, 21941-902, Brazil
| | - Gilberto Barbosa Domont
- Proteomics Unit, Institute of Chemistry, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373 - CCS - Bloco G, Rio de Janeiro, 21941-902, Brazil.
| | - Antonio Carlos Campos de Carvalho
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373 - CCS - Bloco G, Rio de Janeiro, 21941-902, Brazil.
- National Institute of Cardiology, Rio de Janeiro, Brazil.
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16
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Choi R, Park HD, Oh HJ, Lee K, Song J, Lee SY. Dried Blood Spot Multiplexed Steroid Profiling Using Liquid Chromatography Tandem Mass Spectrometry in Korean Neonates. Ann Lab Med 2019; 39:263-270. [PMID: 30623618 PMCID: PMC6340850 DOI: 10.3343/alm.2019.39.3.263] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 09/07/2018] [Accepted: 12/17/2018] [Indexed: 11/19/2022] Open
Abstract
Background Screening for congenital adrenal hyperplasia (CAH) using immunoassays for 17α-hydroxyprogesterone generates many false-positive results. We developed and validated a liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay for simultaneous quantification of nine steroid hormones in dried blood spot (DBS) samples, and established reference intervals for these hormones. Methods We examined our method for linearity, precision, accuracy, extraction recovery, and matrix effects and determined the reference intervals of cortisol, 17α-hydroxyproges-terone, 11-deoxycortisol, 21-deoxycortisol, androstenedione, corticosterone, 11-deoxycorticosterone, testosterone, and progesterone in 1,146 DBS samples (from 272 preterm and 874 full-term neonates). Immunoassay and LC-MS/MS methods were compared for 17α-hydroxyprogesterone. Fourteen additional samples were tested to validate the clinical applicability of the LC-MS/MS method. Results The linearity range was 2.8–828.0 nmol/L for cortisol and 0.9–40.0 nmol/L for the other steroids (R2>0.99). Intra-day and inter-day precision CVs were 2.52–12.26% and 3.53–17.12%, respectively. Accuracy was 80.81–99.94%, and extraction recovery and matrix effects were 88.0–125.4% and 61.7–74.2%, respectively. There was a negative bias, with higher values measured by immunoassay compared with LC-MS/MS (r=0.8104, P<0.0001). The LC-MS/MS method was successfully applied to the analysis of nine steroids in DBS for screening and diagnosis of CAH using the 14 additional samples. Conclusions Our method enables highly sensitive and specific assessment of nine steroids from DBS and is a promising tool for clinical analysis of CAH.
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Affiliation(s)
- Rihwa Choi
- Department of Laboratory Medicine, Green Cross Laboratories, Yongin, Korea.,Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea.,Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyung Doo Park
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea.,Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Hyeon Ju Oh
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea
| | - Kyounghoon Lee
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea.,Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Junghan Song
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Soo Youn Lee
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea.,Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea.
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17
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Development and validation of an assay for quantifying budesonide in dried blood spots collected from extremely low gestational age neonates. J Pharm Biomed Anal 2019; 167:7-14. [PMID: 30738243 DOI: 10.1016/j.jpba.2019.01.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/04/2019] [Accepted: 01/29/2019] [Indexed: 01/09/2023]
Abstract
Budesonide is a potential therapeutic option for the prevention of bronchopulmonary dysplasia in mechanically ventilated premature neonates. The dose and concentrations of budesonide that drive effective prophylaxis are unknown, due in part to the difficulty in obtaining serial blood samples from this fragile population. Of primary concern is the limited total blood volume available for collection for the purposes of a pharmacokinetic study. Dried blood spots (DBS), which require the collection of <200 μL whole blood to fill an entire card, are an attractive low-blood volume alternative to traditional venipuncture sampling. We describe a simple and sensitive method for determining budesonide concentrations in DBS using an ultra-high-performance liquid chromatography - tandem mass spectrometry assay. Budesonide was liberated from a single 6 mm punch using a basified methyl tert-butyl ether extraction procedure. The assay was determined to be accurate and precise in the dynamic range of 1 to 50 ng/mL. The validated assay was then successfully applied to DBS collected as part of a multi-center, dose-escalation study of budesonide administered in surfactant via intra-tracheal instillation to premature neonates between 23 and 28 weeks gestational age. These findings show that DBS are a useful technique for collecting pharmacokinetic samples in premature neonates and other pediatric populations.
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18
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Age-Related Reference Intervals for Blood Amino Acids in Thai Pediatric Population Measured by Liquid Chromatography Tandem Mass Spectrometry. J Nutr Metab 2018; 2018:5124035. [PMID: 29854440 PMCID: PMC5960525 DOI: 10.1155/2018/5124035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 02/19/2018] [Accepted: 02/28/2018] [Indexed: 01/21/2023] Open
Abstract
Background Age, race, and analytic method influence levels of blood amino acids, of which reference intervals are required for the diagnosis and management of inherited metabolic disorders. Objectives To establish age-specific reference intervals for blood amino acids in Thai pediatric population measured by liquid chromatography tandem mass spectrometry (LC-MS/MS). Methods A cross-sectional study of 277 healthy children from birth to 12 years was conducted. Anthropometric, clinical, and dietary information were recorded. Dried blood spots on a filtered paper were used for measurement by derivatized LC-MS/MS. Factors that might affect amino acids such as fasting time and dietary intake were analyzed using quantile regression analysis. Results Levels of thirteen blood amino acids were reported as median and interval from 2.5th–97.5th percentiles. Compared with those of Caucasian, most blood amino acid levels of Thai children were higher. Compared with a previous study using HPLC in Thai children, many amino acid levels are different. Glycine, alanine, leucine/isoleucine, and glutamic acid sharply decreased after birth. Citrulline, arginine, and methionine stayed low from birth throughout childhood, whereas phenylalanine was at middle level and slightly increased during preadolescence. Conclusion Reference intervals of age-specific blood amino acids using LC-MS/MS were established in the Thai pediatric population. They diverge from previous studies, substantiating the recommendation that, for the optimal clinical practice, age-specific reference intervals of amino acids should be designated for the particular population and analysis method.
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19
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Choi MH. Mass spectrometry-based metabolic signatures of sex steroids in breast cancer. Mol Cell Endocrinol 2018; 466:81-85. [PMID: 28928086 DOI: 10.1016/j.mce.2017.09.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 09/15/2017] [Accepted: 09/15/2017] [Indexed: 11/16/2022]
Abstract
Owing to controversy over the effects of steroids on breast cancer pathophysiology, comprehensive quantification of steroid hormones has been extensively considered in both clinical practice and biomarker discovery studies. In contrast to the traditional immunoaffinity-based assays, which show cross-reactivity and have poor validity at low levels of sex steroids, mass spectrometry is becoming a promising tool for measuring steroid levels in complex biological specimens. The Endocrine Society has announced and continuously updated on technical advances to apply high-quality breakthroughs in the clinical sciences. To avoid incorrect estimation of the steroids of interest, however, further emphasis should be made on the efficient separation by chromatography, such as gas and liquid chromatography, prior to mass spectrometric (MS) detection. Recent advances in MS-based analysis of sex steroids associated with breast cancer enable accurate quantification of circulating as well as localized steroids from frozen tissue slices, allowing these assays to be more powerful in clinical practice.
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Affiliation(s)
- Man Ho Choi
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea.
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20
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Morimoto LM, Zava D, McGlynn KA, Stanczyk FZ, Kang AY, Ma X, Wiemels JL, Metayer C. Neonatal Hormone Concentrations and Risk of Testicular Germ Cell Tumors (TGCT). Cancer Epidemiol Biomarkers Prev 2018; 27:488-495. [PMID: 29475970 PMCID: PMC5884718 DOI: 10.1158/1055-9965.epi-17-0879] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/06/2017] [Accepted: 01/29/2018] [Indexed: 01/07/2023] Open
Abstract
Background: Testicular germ cell tumor (TGCT) incidence has increased over the last 40 years in the United States. In contrast to TGCT among infants, it is hypothesized that TGCT in adolescents and young men is the result of sex steroid hormone imbalance during early fetal development. However, little is known about the neonatal period when abrupt hormonal changes occur, and direct supporting evidence is scarce due to the difficulties in obtaining prediagnostic specimens.Methods: We conducted a population-based case-control study examining hormone levels at birth among 91 infants (0-4 years) and 276 adolescents (15-19 years) diagnosed with TGCT, and 344 matched controls. Estrogen and androgen levels were quantified using liquid chromatography-tandem mass spectrometry (LC-MS/MS) from archived newborn dried blood spots. Logistic regression models were used to estimate the association between each hormone level and TGCT risk.Results: Higher levels of androstenedione were associated with increased TGCT risk among adolescents [odds ratio (OR): 2.33, 95% confidence interval (CI): 1.37-3.97 for highest vs. lowest quartile; P trend = 0.003] but not among infants (OR: 0.70, 95% CI: 0.28-1.77). A similar pattern was observed for testosterone (OR: 1.73, 95% CI: 1.00-3.00,) although the trend was not significant (P trend = 0.12). Associations were stronger among non-Hispanic white subjects, relative to Hispanics. There was no difference by tumor histologic subtype. Estriol (the only detectable estrogen) was not associated with TGCT risk in either age group.Conclusions: Higher levels of neonatal androgens were associated with increased risk of TGCT among adolescents, suggesting that early life hormone levels are related to the later development of TGCT.Impact: This is the first study with direct measures of sex steroid hormones to examine the relationship between estrogens and androgens at birth and risk of adolescent TGCT. Cancer Epidemiol Biomarkers Prev; 27(4); 488-95. ©2018 AACR.
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Affiliation(s)
- Libby M Morimoto
- Division of Epidemiology, School of Public Health, University of California, Berkeley, California.
| | | | - Katherine A McGlynn
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Frank Z Stanczyk
- Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Alice Y Kang
- Division of Epidemiology, School of Public Health, University of California, Berkeley, California
| | - Xiaomei Ma
- Yale School of Public Health, New Haven, Connecticut
| | - Joseph L Wiemels
- Department of Preventative Medicine, University of Southern California, Los Angeles, California
| | - Catherine Metayer
- Division of Epidemiology, School of Public Health, University of California, Berkeley, California
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