1
|
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.
Collapse
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.
| |
Collapse
|
2
|
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.
Collapse
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)
| |
Collapse
|
3
|
Kwon D, Lee W, Kim SH, Jung YS. Comparison of Hepatic Metabolite Profiles between Infant and Adult Male Mice Using 1H-NMR-Based Untargeted Metabolomics. Metabolites 2022; 12:metabo12100910. [PMID: 36295812 PMCID: PMC9611911 DOI: 10.3390/metabo12100910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 11/28/2022] Open
Abstract
Although age-related characteristics of hepatic metabolism are reported, those in infants are not fully understood. In the present study, we performed untargeted metabolomic profiling of the livers of infant (3-week-old) and adult (9-week-old) male ICR mice using 1H-NMR spectroscopy and compared 35 abundant hepatic metabolite concentrations between the two groups. The liver/body weight ratio did not differ between the two groups; however, serum glucose, blood urea nitrogen, total cholesterol, and triglyceride concentrations were lower in infants than in adults. Hepatic carbohydrate metabolites (glucose, maltose, and mannose) were higher, whereas amino acids (glutamine, leucine, methionine, phenylalanine, tyrosine, and valine) were lower in infant mice than in adult mice. The concentrations of ascorbate, betaine, sarcosine, and ethanolamine were higher, whereas those of taurine, inosine, and O-phosphocholine were lower in infant mice than in adult mice. The differences in liver metabolites between the two groups could be due to differences in their developmental stages and dietary sources (breast milk for infants and laboratory chow for adults). The above results provide insights into the hepatic metabolism in infants; however, the exact implications of the findings require further investigation.
Collapse
Affiliation(s)
- Doyoung Kwon
- Department of Pharmacy, Research Institute for Drug Development, College of Pharmacy, Pusan National University, Busan 46241, Korea
- Jeju Research Institute of Pharmaceutical Sciences, College of Pharmacy, Jeju National University, Jeju 690-756, Korea
| | - Wonho Lee
- Department of Pharmacy, Research Institute for Drug Development, College of Pharmacy, Pusan National University, Busan 46241, Korea
| | - Sou Hyun Kim
- Department of Pharmacy, Research Institute for Drug Development, College of Pharmacy, Pusan National University, Busan 46241, Korea
- Correspondence: (S.H.K.); (Y.-S.J.); Tel.: +82-51-5102816 (Y.-S.J.)
| | - Young-Suk Jung
- Department of Pharmacy, Research Institute for Drug Development, College of Pharmacy, Pusan National University, Busan 46241, Korea
- Correspondence: (S.H.K.); (Y.-S.J.); Tel.: +82-51-5102816 (Y.-S.J.)
| |
Collapse
|
4
|
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.
Collapse
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.
| |
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Yavuz E, Irak K, Çelik ÖY, Bolacali M, Ergiden Y, Gürgöze S. Determination of the Relationship of Serum Amino Acid Profile with Sex and Body Weight in Healthy Geese by Liquid Chromatography-Tandem Mass Spectrometry. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2022. [DOI: 10.1590/1806-9061-2021-1569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- E Yavuz
- International Center for Livestock Research and Training, Turkey
| | | | | | | | - Y Ergiden
- International Center for Livestock Research and Training, Turkey
| | | |
Collapse
|
7
|
Population epidemiology and concordance for plasma amino acids and precursors in 11-12-year-old children and their parents. Sci Rep 2021; 11:3619. [PMID: 33574360 PMCID: PMC7878730 DOI: 10.1038/s41598-020-80923-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 12/21/2020] [Indexed: 01/23/2023] Open
Abstract
Amino acid (AA) concentrations are influenced by both exogenous (e.g. diet, lifestyle) and endogenous factors (e.g. genetic, transcriptomic, epigenetic, and metabolomic). Fasting plasma AA profiles in adulthood are predictive of diabetes risk over periods of up to 12 years. Data on AA profiles in cross-generational cohorts, including individuals from shared gene-environment settings are scarce, but would allow the identification of the contribution of heritable and environmental factors characterising the levels of circulating AAs. This study aimed to investigate parent–child (familial dyad) concordance, absolute differences between generations- (children versus adults), age- (in adults: 28–71 years), and sex-dependent differences in plasma AA concentrations. Plasma AA concentrations were measured by UHPLC/MS–MS in 1166 children [mean (SD) age 11 (0.5) years, 51% female] and 1324 of their parents [44 (5.1) years, 87% female]. AA concentrations were variably concordant between parents and their children (5–41% of variability explained). Most AA concentrations were higher in adults than children, except for the non-essential AAs arginine, aspartic acid, glutamine, hydroxy-proline, proline, and serine. Male adults and children typically had higher AA concentrations than females. The exceptions were alanine, glutamine, glycine, hydroxy-proline, serine, and threonine in girls; and glycine and serine in women. Age, sex, and shared familial factors are important determinants of plasma AA concentrations.
Collapse
|
8
|
Alp HH, Akbay Hİ, Çokluk E, Huyut Z, Keskin S, Şekeroğlu MR. Within-subject and between-subject biological variation of first morning void urine amino acids in 12 healthy subjects. Clin Chem Lab Med 2020; 58:1901-1909. [PMID: 32324156 DOI: 10.1515/cclm-2020-0249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 03/27/2020] [Indexed: 11/15/2022]
Abstract
Background Urine amino acid analysis is used for the assessment of various diseases. The aim of this study was to estimate the valid biological variation (BV) components (within- and between-subjects) required for the safe clinical application of free urine amino acids. Methods First morning void urine samples were taken from 12 healthy subjects (five females, seven males) once a week for 10 consecutive weeks, and amino acid analysis was performed using an Agilent 6470 triple quadrupole tandem mass spectrometer instrument. The obtained data were subjected to normality, outlier and variance homogeneity analyses prior to coefficient of variation (CV) analysis. Within- and between-subject BV values (CVI and CVG) of 39 amino acids were determined for all subjects. In addition, the index of individuality (II), reference change value (RCV), imprecision, bias and total error were estimated using BV data obtained from our study. Results The CVI values ranged from 8.9 (histidine) to 36.8% (trans-4-hydroxyprolin), while the CVG values ranged from 25.0 (1-methyl-L-histidine) to 63.3% (phenylalanine). The II value of most amino acids was less than 0.6 and ranged between 0.21 and 0.88. The imprecision, bias and total error ranged between 4.45 and 16.6, between 7.69 and 16.6, and between 18.4 and 43.2, respectively. Conclusions This study, designed according to a rigorous protocol, has the feature of being the first to give information about BV data of urine amino acids. We believe that the reference intervals have a limitation in the evaluation of consecutive results from an individual, so the use of RCV would be more appropriate.
Collapse
Affiliation(s)
- Hamit Hakan Alp
- Van Yuzuncu Yil University, Medical Faculty, Department of Biochemistry, Van, Turkey
| | - Halil İbrahim Akbay
- Van Yuzuncu Yil University, Medical Faculty, Department of Biochemistry, Van, Turkey
| | - Erdem Çokluk
- Sakarya University Medical Faculty, Department of Biochemistry, Sakarya, Turkey
| | - Zubeyir Huyut
- Van Yuzuncu Yil University, Medical Faculty, Department of Biochemistry, Van, Turkey
| | - Sıddık Keskin
- Van Yuzuncu Yil University, Medical Faculty, Department of Biostatistics, Van, Turkey
| | | |
Collapse
|
9
|
Halil K, Meryem K. Plasma amino acid levels in a cohort of patients in Turkey with classical phenylketonuria. ASIAN BIOMED 2020. [DOI: 10.1515/abm-2020-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Background
In patients with phenylketonuria, the central nervous system is adversely affected by noncompliance with diet. The levels of phenylalanine and many different amino acids (AAs) in the plasma of patients with phenylketonuria can be measured simultaneously.
Objectives
To measure the blood plasma levels of neurotransmitter AAs in a cohort of patients in Sanliurfa province, Turkey, with phenylketonuria for use as a support parameter for the follow-up of patients.
Methods
The phenylketonurics that we followed (n = 100) were divided into 2 groups according to their compliance with their dietary treatment. Plasma AA analysis results of phenylketonurics were compared with those of healthy children in a control group (n = 50).
Results
In the diet incompliant group (n = 56), the mean levels of γ-aminobutyric acid (GABA; 0.96 ± 1.07 μmol/L) and glycine (305.1 ± 105.19 μmol/L) were significantly higher than those in the diet compliant group (n = 44; GABA P = 0.005, glycine P < 0.001) and in the control group (GABA and glycine P < 0.001), whereas the mean levels of glutamic acid (39.01 ± 22.94 μmol/L) and asparagine (39.3 ± 16.89 μmol/L) were lower (P < 0.001) in the diet incompliant group. A positive correlation was observed between the levels of phenylalanine and GABA and glycine. A negative relationship was found between the levels of phenylalanine and glutamic acid and asparagine.
Conclusions
A relationship exists between the levels of plasma phenylalanine in a cohort of phenylketonurics in Sanliurfa province, Turkey, and the levels of some excitatory and inhibitory AAs. Excitatory and inhibitory AA levels in plasma may be used as support parameters in the follow-up of patients with phenylketonuria.
Collapse
Affiliation(s)
- Kazanasmaz Halil
- Department of Pediatrics, Faculty of Medicine , Harran University , Sanliurfa , Turkey
| | - Karaca Meryem
- Department of Pediatric Metabolism Disorders, Faculty of Medicine , Harran University , Sanliurfa , Turkey
| |
Collapse
|
10
|
Hirschel J, Vogel M, Baber R, Garten A, Beuchel C, Dietz Y, Dittrich J, Körner A, Kiess W, Ceglarek U. Relation of Whole Blood Amino Acid and Acylcarnitine Metabolome to Age, Sex, BMI, Puberty, and Metabolic Markers in Children and Adolescents. Metabolites 2020; 10:metabo10040149. [PMID: 32290284 PMCID: PMC7240971 DOI: 10.3390/metabo10040149] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/08/2020] [Indexed: 12/18/2022] Open
Abstract
Background: Changes in the metabolic fingerprint of blood during child growth and development are a largely under-investigated area of research. The examination of such aspects requires a cohort of healthy children and adolescents who have been subjected to deep phenotyping, including collection of biospecimens for metabolomic analysis. The present study considered whether amino acid (AA) and acylcarnitine (AC) concentrations are associated with age, sex, body mass index (BMI), and puberty during childhood and adolescence. It also investigated whether there are associations between amino acids (AAs) and acylcarnitines (ACs) and laboratory parameters of glucose and lipid metabolism, as well as liver, kidney, and thyroid parameters. Methods: A total of 3989 dried whole blood samples collected from 2191 healthy participants, aged 3 months to 18 years, from the LIFE Child cohort (Leipzig, Germany) were analyzed using liquid chromatography tandem mass spectrometry to detect levels of 23 AAs, 6 ACs, and free carnitine (C0). Age- and sex-related percentiles were estimated for each metabolite. In addition, correlations between laboratory parameters and levels of the selected AAs and ACs were calculated using hierarchical models. Results: Four different age-dependent profile types were identified for AAs and ACs. Investigating the association with puberty, we mainly identified peak metabolite levels at Tanner stages 2 to 3 in girls and stages 3 to 5 in boys. Significant correlations were observed between BMI standard deviation score (BMI-SDS) and certain metabolites, among them, branched-chain (leucine/isoleucine, valine) and aromatic (phenylalanine, tyrosine) amino acids. Most of the metabolites correlated significantly with absolute concentrations of glucose, glycated hemoglobin (HbA1c), triglycerides, cystatin C (CysC), and creatinine. After age adjustment, significant correlations were observed between most metabolites and CysC, as well as HbA1c. Conclusions: During childhood, several AA and AC levels are related to age, sex, BMI, and puberty. Moreover, our data verified known associations but also revealed new correlations between AAs/ACs and specific key markers of metabolic function.
Collapse
Affiliation(s)
- Josephin Hirschel
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
- Hospital for Children and Adolescents and Center for Pediatric Research (CPL), University of Leipzig, Liebigstrasse 20a, 04103 Leipzig, Germany;
| | - Mandy Vogel
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
- Hospital for Children and Adolescents and Center for Pediatric Research (CPL), University of Leipzig, Liebigstrasse 20a, 04103 Leipzig, Germany;
| | - Ronny Baber
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University Hospital Leipzig, Paul-List Str.13/15, 04103 Leipzig, Germany;
| | - Antje Garten
- Hospital for Children and Adolescents and Center for Pediatric Research (CPL), University of Leipzig, Liebigstrasse 20a, 04103 Leipzig, Germany;
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham B15 2TT, UK
| | - Carl Beuchel
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Härtelstrasse 16-18, 04107 Leipzig, Germany;
| | - Yvonne Dietz
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
| | - Julia Dittrich
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University Hospital Leipzig, Paul-List Str.13/15, 04103 Leipzig, Germany;
| | - Antje Körner
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
- Hospital for Children and Adolescents and Center for Pediatric Research (CPL), University of Leipzig, Liebigstrasse 20a, 04103 Leipzig, Germany;
| | - Wieland Kiess
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
- Hospital for Children and Adolescents and Center for Pediatric Research (CPL), University of Leipzig, Liebigstrasse 20a, 04103 Leipzig, Germany;
| | - Uta Ceglarek
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany; (J.H.); (M.V.); (R.B.); (Y.D.); (A.K.); (W.K.)
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University Hospital Leipzig, Paul-List Str.13/15, 04103 Leipzig, Germany;
- Correspondence:
| |
Collapse
|
11
|
Biomarker profiling of vitamin responsive seizures: a potential tool to detect pediatric seizures of unknown aetiology. Bioanalysis 2019; 12:111-124. [PMID: 31854203 DOI: 10.4155/bio-2019-0121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: Certain rare inborn errors of metabolism clinically present with intractable seizures that readily respond to vitamin therapy. If identified early, brain damage due to seizures can be prevented. Methodology: A LC-MS method was developed and validated for the simultaneous quantification of the biomarkers in selected vitamin responsive pediatric seizures from dried blood spots. Results: Application of the validated method to a seizure cohort of 46 patients indicated strong agreement of the method for clinical validity. Reference intervals for these biomarkers in dried blood spots were also determined for the population, after screening 956 neonates. Conclusion: The developed method was seen to be sensitive, linear, accurate and precise for testing vitamin responsive pediatric seizures.
Collapse
|