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Sharma S, Subrahmanyam YV, Ranjani H, Sidra S, Parmar D, Vadivel S, Kannan S, Grallert H, Usharani D, Anjana RM, Balasubramanyam M, Mohan V, Jerzy A, Panchagnula V, Gokulakrishnan K. Circulatory levels of lysophosphatidylcholine species in obese adolescents: Findings from cross-sectional and prospective lipidomics analyses. Nutr Metab Cardiovasc Dis 2024:S0939-4753(24)00080-2. [PMID: 38503619 DOI: 10.1016/j.numecd.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND AND AIMS Obesity has reached epidemic proportions, emphasizing the importance of reliable biomarkers for detecting early metabolic alterations and enabling early preventative interventions. However, our understanding of the molecular mechanisms and specific lipid species associated with childhood obesity remains limited. Therefore, the aim of this study was to investigate plasma lipidomic signatures as potential biomarkers for adolescent obesity. METHODS AND RESULTS A total of 103 individuals comprising overweight/obese (n = 46) and normal weight (n = 57) were randomly chosen from the baseline ORANGE (Obesity Reduction and Noncommunicable Disease Awareness through Group Education) cohort, having been followed up for a median of 7.1 years. Plasma lipidomic profiling was performed using the UHPLC-HRMS method. We used three different models adjusted for clinical covariates to analyze the data. Clustering methods were used to define metabotypes, which allowed for the stratification of subjects into subgroups with similar clinical and metabolic profiles. We observed that lysophosphatidylcholine (LPC) species like LPC.16.0, LPC.18.3, LPC.18.1, and LPC.20.3 were significantly (p < 0.05) associated with baseline and follow-up BMI in adolescent obesity. The association of LPC species with BMI remained consistently significant even after adjusting for potential confounders. Moreover, applying metabotyping using hierarchical clustering provided insights into the metabolic heterogeneity within the normal and obese groups, distinguishing metabolically healthy individuals from those with unhealthy metabolic profiles. CONCLUSION The specific LPC levels were found to be altered and increased in childhood obesity, particularly during the follow-up. These findings suggest that LPC species hold promise as potential biomarkers of obesity in adolescents, including healthy and unhealthy metabolic profiles.
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Affiliation(s)
- Sapna Sharma
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Yalamanchili Venkata Subrahmanyam
- CEPD Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008 India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Harish Ranjani
- Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai, 600086 India; Department of Preventive and Digital Health Research, Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai, 600086 India
| | - Sidra Sidra
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Dharmeshkumar Parmar
- CEPD Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008 India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sangeetha Vadivel
- Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai, 600086 India
| | - Shanthini Kannan
- Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai, 600086 India
| | - Harald Grallert
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Dandamudi Usharani
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute (CFTRI), Mysore, Karnataka 570020, India
| | - Ranjit Mohan Anjana
- Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai, 600086 India
| | | | - Viswanathan Mohan
- Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai, 600086 India
| | - Adamski Jerzy
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 8 Medical Drive, 117597, Singapore; Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Venkateswarlu Panchagnula
- CEPD Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008 India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kuppan Gokulakrishnan
- Department of Neurochemistry, National Institute of Mental Health and Neuro Sciences (NIMHANS), Hosur Road, Bengaluru, Karnataka 560029, India.
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Wu ZP, Wei W, Cheng Y, Chen JY, Liu Y, Liu S, Hu MD, Zhao H, Li XF, Chen X. Altered adolescents obesity metabolism is associated with hypertension: a UPLC-MS-based untargeted metabolomics study. Front Endocrinol (Lausanne) 2023; 14:1172290. [PMID: 37229452 PMCID: PMC10203610 DOI: 10.3389/fendo.2023.1172290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023] Open
Abstract
Objective This study aimed to explore the relationship between the plasma metabolites of adolescent obesity and hypertension and whether metabolite alterations had a mediating effort between adolescent obesity and hypertension. Methods We applied untargeted ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) to detect the plasma metabolomic profiles of 105 adolescents. All participants were selected randomly based on a previous cross-sectional study. An orthogonal partial least squares- discriminant analysis (OPLS-DA), followed by univariate statistics and enrichment analysis, was used to identify differential metabolites. Using logistic regression for variable selection, an obesity-related metabolite score (OMS, OMS=∑k=1nβnmetabolite n) was constructed from the metabolites identified, and hypertension risk was estimated. Results In our study, based on P< 0.05, variable importance in projection (VIP) > 1.0, and impact value > 0.1, we identified a total of 12 differential metabolites. Significantly altered metabolic pathways were the sphingolipid metabolism, purine metabolism, pyrimidine metabolism, phospholipid metabolism, steroid hormone biosynthesis, tryptophan, tyrosine, and phenylalanine biosynthesis. The logistic regression selection resulted in a four-metabolite score (thymidine, sphingomyelin (SM) d40:1, 4-hydroxyestradiol, and L-lysinamide), which was positively associated with hypertension risk (odds ratio: 7.79; 95% confidence interval: 2.13, 28.47; for the quintile 4 compared with quartile 1 of OMS) after multivariable adjustment. Conclusions The OMS constructed from four differential metabolites was used to predict the risk of hypertension in adolescents. These findings could provide sensitive biomarkers for the early recognition of hypertension in adolescents with obesity.
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Affiliation(s)
- Zhi-Ping Wu
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Wei Wei
- Department of Neurosurgery, Central Hospital of Dalian University of Technology, Dalian, China
| | - Yuan Cheng
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Jing-Yi Chen
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Yang Liu
- Institute of Health Science, China Medical University, Shenyang, China
| | - Shan Liu
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Meng-Die Hu
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Heng Zhao
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Xiao-Feng Li
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
| | - Xin Chen
- Department of Epidemiology, School of Public Health, Dalian Medical University, Dalian, China
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Shah S, Mu C, Moossavi S, Shen-Tu G, Schlicht K, Rohmann N, Geisler C, Laudes M, Franke A, Züllig T, Köfeler H, Shearer J. Physical activity-induced alterations of the gut microbiota are BMI dependent. FASEB J 2023; 37:e22882. [PMID: 36943402 DOI: 10.1096/fj.202201571r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/31/2023] [Accepted: 03/06/2023] [Indexed: 03/23/2023]
Abstract
Physical inactivity is one of the leading causes of chronic metabolic disease including obesity. Increasing physical activity (PA) has been shown to improve cardiometabolic and musculoskeletal health and to be associated with a distinct gut microbiota composition in trained athletes. However, the impact of PA on the gut microbiota is inconclusive for individuals performing PA in their day-to-day life. This study examined the role of PA and hand-grip strength on gut microbiome composition in middle-aged adults (40-65 years, n = 350) with normal (18.5-24.9 kg/m2 ) and overweight (25-29.9 kg/m2 ) body mass index (BMI). PA was recorded using the International Physical Activity Questionnaire, and hand-grip strength was measured using a dynamometer. Serum samples were assessed for lipidomics while DNA was extracted from fecal samples for microbiome analysis. Overweight participants showed a higher concentration of triacylglycerols, and lower concentrations of cholesteryl esters, sphingomyelin, and lyso-phosphotidylcholine lipids (p < .05) compared with those with normal BMI. Additionally, overweight participants had a lower abundance of the Oscillibacter genus (p < .05). The impact of PA duration on the gut microbiome was BMI dependent. In normal but not overweight participants, high PA duration showed greater relative abundance of commensal taxa such as Actinobacteria and Proteobacteria phyla, as well as Collinsella and Prevotella genera (p < .05). Furthermore, in males with normal BMI, a stronger grip strength was associated with a higher relative abundance of Faecalibacterium and F. prausnitzii (p < .05) compared with lower grip strength. Taken together, data suggest that BMI plays a significant role in modeling PA-induced changes in gut microbiota.
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Affiliation(s)
- Shrushti Shah
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Chunlong Mu
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Shirin Moossavi
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Grace Shen-Tu
- Alberta's Tomorrow Project, Cancer Control Alberta, Alberta Health Services, Edmonton, Alberta, Canada
| | - Kristina Schlicht
- Institute of Diabetes and Clinical Metabolic Research, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Nathalie Rohmann
- Institute of Diabetes and Clinical Metabolic Research, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Corinna Geisler
- Institute of Diabetes and Clinical Metabolic Research, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Matthias Laudes
- Institute of Diabetes and Clinical Metabolic Research, University Medical Center Schleswig-Holstein, Kiel, Germany
- Division of Endocrinology, Diabetes and Clinical Nutrition, Department of Medicine, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Thomas Züllig
- Core Facility Mass Spectrometry, Medical University of Graz, Graz, Austria
| | - Harald Köfeler
- Core Facility Mass Spectrometry, Medical University of Graz, Graz, Austria
| | - Jane Shearer
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Barrachina MN, Pernes G, Becker IC, Allaeys I, Hirsch TI, Groeneveld DJ, Khan AO, Freire D, Guo K, Carminita E, Morgan PK, Collins TJ, Mellett NA, Wei Z, Almazni I, Italiano JE, Luyendyk J, Meikle PJ, Puder M, Morgan NV, Boilard E, Murphy AJ, Machlus KR. Efficient megakaryopoiesis and platelet production require phospholipid remodeling and PUFA uptake through CD36. bioRxiv 2023:2023.02.12.527706. [PMID: 36798332 PMCID: PMC9934665 DOI: 10.1101/2023.02.12.527706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Lipids contribute to hematopoiesis and membrane properties and dynamics, however, little is known about the role of lipids in megakaryopoiesis. Here, a lipidomic analysis of megakaryocyte progenitors, megakaryocytes, and platelets revealed a unique lipidome progressively enriched in polyunsaturated fatty acid (PUFA)-containing phospholipids. In vitro, inhibition of both exogenous fatty acid functionalization and uptake and de novo lipogenesis impaired megakaryocyte differentiation and proplatelet production. In vivo, mice on a high saturated fatty acid diet had significantly lower platelet counts, which was prevented by eating a PUFA-enriched diet. Fatty acid uptake was largely dependent on CD36, and its deletion in mice resulted in thrombocytopenia. Moreover, patients with a CD36 loss-of-function mutation exhibited thrombocytopenia and increased bleeding. Our results suggest that fatty acid uptake and regulation is essential for megakaryocyte maturation and platelet production, and that changes in dietary fatty acids may be a novel and viable target to modulate platelet counts.
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Affiliation(s)
- Maria N Barrachina
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Gerard Pernes
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Isabelle C Becker
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Isabelle Allaeys
- Centre de Recherche du CHU de Québec-Université Laval and Centre de Recherche ARThrite, Québec, QC, G1V4G2 Canada
| | - Thomas I. Hirsch
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Dafna J Groeneveld
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, USA
| | - Abdullah O. Khan
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Vincent Drive, Birmingham, U.K, B15 2TT
- MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine and National Institute of Health Research (NIHR) Oxford Biomedical Research Centre, University of Oxford, Oxford, U.K. OX3 9DS
| | - Daniela Freire
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Karen Guo
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Estelle Carminita
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Pooranee K Morgan
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Thomas J Collins
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Natalie A Mellett
- Metabolomics, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Zimu Wei
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, USA
| | - Ibrahim Almazni
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Vincent Drive, Birmingham, U.K, B15 2TT
| | - Joseph E. Italiano
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - James Luyendyk
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, USA
| | - Peter J Meikle
- Metabolomics, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Mark Puder
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
| | - Neil V. Morgan
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Vincent Drive, Birmingham, U.K, B15 2TT
| | - Eric Boilard
- Centre de Recherche du CHU de Québec-Université Laval and Centre de Recherche ARThrite, Québec, QC, G1V4G2 Canada
| | - Andrew J Murphy
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Kellie R Machlus
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA, 02115 USA
- Harvard Medical School, Department of Surgery, Boston Children’s Hospital, Boston, MA, 02115 USA
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Castro-Alves V, Orešič M, Hyötyläinen T. Lipidomics in nutrition research. Curr Opin Clin Nutr Metab Care 2022; 25:311-318. [PMID: 35788540 DOI: 10.1097/mco.0000000000000852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW This review focuses on the recent findings from lipidomics studies as related to nutrition and health research. RECENT FINDINGS Several lipidomics studies have investigated malnutrition, including both under- and overnutrition. Focus has been both on the early-life nutrition as well as on the impact of overfeeding later in life. Multiple studies have investigated the impact of different macronutrients in lipidome on human health, demonstrating that overfeeding with saturated fat is metabolically more harmful than overfeeding with polyunsaturated fat or carbohydrate-rich food. Diet rich in saturated fat increases the lipotoxic lipids, such as ceramides and saturated fatty-acyl-containing triacylglycerols, increasing also the low-density lipoprotein aggregation rate. In contrast, diet rich in polyunsaturated fatty acids, such as n-3 fatty acids, decreases the triacylglycerol levels, although some individuals are poor responders to n-3 supplementation. SUMMARY The results highlight the benefits of lipidomics in clinical nutrition research, also providing an opportunity for personalized nutrition. An area of increasing interest is the interplay of diet, gut microbiome, and metabolome, and how they together impact individuals' responses to nutritional challenges.
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Affiliation(s)
| | - Matej Orešič
- School of Medical Sciences, Örebro University, Örebro, Sweden
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
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Gonzalez PA, Simcox J, Raff H, Wade G, Von Bank H, Weisman S, Hainsworth K. Lipid signatures of chronic pain in female adolescents with and without obesity. Lipids Health Dis 2022; 21:80. [PMID: 36042489 PMCID: PMC9426222 DOI: 10.1186/s12944-022-01690-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/05/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Chronic pain in adolescence is associated with diminished outcomes, lower socioeconomic status in later life, and decreased family well-being. Approximately one third of adolescents with chronic pain have obesity compared to the general population. In obesity, lipid signals regulate insulin sensitivity, satiety, and pain sensation. We determined whether there is a distinct lipid signature associated with chronic pain and its co-occurrence with obesity in adolescents. METHODS We performed global lipidomics in serum samples from female adolescents (N = 67, 13-17 years old) with no pain/healthy weight (Controls), chronic pain/healthy weight (Pain Non-obese), no pain/obesity (Obese), or chronic pain/obesity (Pain Obese). RESULTS The Pain Non-obese group had lipid profiles similar to the Obese and Pain Obese groups. The major difference in these lipids included decreased lysophosphatidylinositol (LPI), lysophosphatidylcholine (LPC), and lysophosphatidylethanolamine (LPE) in the three clinical groups compared to the Control group. Furthermore, ceramides and sphingomyelin were higher in the groups with obesity when compared to the groups with healthy weight, while plasmalogens were elevated in the Pain Obese group only. CONCLUSIONS Serum lipid markers are associated with chronic pain and suggest that specific lipid metabolites may be a signaling mechanism for inflammation associated with co-occurring chronic pain and obesity.
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Affiliation(s)
- Paula A Gonzalez
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Judith Simcox
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Hershel Raff
- Departments of Medicine (Endocrinology and Molecular Medicine), Surgery, and Physiology, Medical College of Wisconsin, Milwaukee, WI, USA
- Endocrine Research Laboratory, Aurora St. Luke's Medical Center, Advocate Aurora Research Institute, Milwaukee, WI, USA
| | - Gina Wade
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Helaina Von Bank
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Steven Weisman
- Departments of Anesthesiology and Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
- Jane B. Pettit Pain and Headache Center, Children's Wisconsin, Wauwatosa, WI, 53226, USA
| | - Keri Hainsworth
- Jane B. Pettit Pain and Headache Center, Children's Wisconsin, Wauwatosa, WI, 53226, USA.
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.
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Szczerbinski L, Wojciechowska G, Olichwier A, Taylor MA, Puchta U, Konopka P, Paszko A, Citko A, Goscik J, Fiehn O, Fan S, Wasilewska A, Taranta-Janusz K, Kretowski A. Untargeted Metabolomics Analysis of the Serum Metabolic Signature of Childhood Obesity. Nutrients 2022; 14:214. [PMID: 35011090 DOI: 10.3390/nu14010214] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 02/04/2023] Open
Abstract
Obesity rates among children are growing rapidly worldwide, placing massive pressure on healthcare systems. Untargeted metabolomics can expand our understanding of the pathogenesis of obesity and elucidate mechanisms related to its symptoms. However, the metabolic signatures of obesity in children have not been thoroughly investigated. Herein, we explored metabolites associated with obesity development in childhood. Untargeted metabolomic profiling was performed on fasting serum samples from 27 obese Caucasian children and adolescents and 15 sex- and age-matched normal-weight children. Three metabolomic assays were combined and yielded 726 unique identified metabolites: gas chromatography–mass spectrometry (GC–MS), hydrophilic interaction liquid chromatography coupled to mass spectrometry (HILIC LC–MS/MS), and lipidomics. Univariate and multivariate analyses showed clear discrimination between the untargeted metabolomes of obese and normal-weight children, with 162 significantly differentially expressed metabolites between groups. Children with obesity had higher concentrations of branch-chained amino acids and various lipid metabolites, including phosphatidylcholines, cholesteryl esters, triglycerides. Thus, an early manifestation of obesity pathogenesis and its metabolic consequences in the serum metabolome are correlated with altered lipid metabolism. Obesity metabolite patterns in the adult population were very similar to the metabolic signature of childhood obesity. Identified metabolites could be potential biomarkers and used to study obesity pathomechanisms.
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