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Guerra IMS, Ferreira HB, Maurício T, Pinho M, Diogo L, Moreira S, Goracci L, Bonciarelli S, Melo T, Domingues P, Domingues MR, Moreira ASP. Plasma lipidomics analysis reveals altered profile of triglycerides and phospholipids in children with Medium-Chain Acyl-CoA dehydrogenase deficiency. J Inherit Metab Dis 2024; 47:731-745. [PMID: 38356271 DOI: 10.1002/jimd.12718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/16/2024]
Abstract
Medium-chain acyl-CoA dehydrogenase deficiency (MCADD) is the most prevalent mitochondrial fatty acid β-oxidation disorder. In this study, we assessed the variability of the lipid profile in MCADD by analysing plasma samples obtained from 25 children with metabolically controlled MCADD (following a normal diet with frequent feeding and under l-carnitine supplementation) and 21 paediatric control subjects (CT). Gas chromatography-mass spectrometry was employed for the analysis of esterified fatty acids, while high-resolution C18-liquid chromatography-mass spectrometry was used to analyse lipid species. We identified a total of 251 lipid species belonging to 15 distinct lipid classes. Principal component analysis revealed a clear distinction between the MCADD and CT groups. Univariate analysis demonstrated that 126 lipid species exhibited significant differences between the two groups. The lipid species that displayed the most pronounced variations included triacylglycerols and phosphatidylcholines containing saturated and monounsaturated fatty acids, specifically C14:0 and C16:0, which were found to be more abundant in MCADD. The observed changes in the plasma lipidome of children with non-decompensated MCADD suggest an underlying alteration in lipid metabolism. Therefore, longitudinal monitoring and further in-depth investigations are warranted to better understand whether such alterations are specific to MCADD children and their potential long-term impacts.
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Affiliation(s)
- Inês M S Guerra
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Helena B Ferreira
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Tatiana Maurício
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Marisa Pinho
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Luísa Diogo
- Reference Center for Hereditary Metabolic Diseases, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- European Reference Network for Hereditary Metabolic Diseases - MetabERN, Portugal
| | - Sónia Moreira
- Reference Center for Hereditary Metabolic Diseases, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- European Reference Network for Hereditary Metabolic Diseases - MetabERN, Portugal
| | - Laura Goracci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Stefano Bonciarelli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Tânia Melo
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Pedro Domingues
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - M Rosário Domingues
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Ana S P Moreira
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
- CESAM- Centre for Environmental and Marine Studies-, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
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2
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Kharouba M, Patel DD, Jaber RH, Mahmoud SH. Metabolomic Analysis in Neurocritical Care Patients. Metabolites 2023; 13:745. [PMID: 37367902 DOI: 10.3390/metabo13060745] [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: 05/04/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023] Open
Abstract
Metabolomics is the analytical study of metabolites in biological matrices using high-throughput profiling. Traditionally, the metabolome has been studied to identify various biomarkers for the diagnosis and pathophysiology of disease. Over the last decade, metabolomic research has grown to include the identification of prognostic markers, the development of novel treatment strategies, and the prediction of disease severity. In this review, we summarized the available evidence on the use of metabolome profiling in neurocritical care populations. Specifically, we focused on aneurysmal subarachnoid hemorrhage, traumatic brain injury, and intracranial hemorrhage to identify the gaps in the current literature and to provide direction for future studies. A primary literature search of the Medline and EMBASE databases was conducted. Upon removing duplicate studies, abstract screening and full-text screening were performed. We screened 648 studies and extracted data from 17 studies. Based on the current evidence, the utility of metabolomic profiling has been limited due to inconsistencies amongst studies and a lack of reproducible data. Studies identified various biomarkers for diagnosis, prognosis, and treatment modification. However, studies evaluated and identified different metabolites, resulting in an inability to compare the study results. Future research towards addressing the gaps in the current literature, including reproducing data on the use of specific metabolite panels, is needed.
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Affiliation(s)
- Maged Kharouba
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Dimple D Patel
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Rami H Jaber
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Sherif Hanafy Mahmoud
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada
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Sebaa R, AlMogren M, Alseraty W, Abdel Rahman AM. Untargeted Metabolomics Identifies Biomarkers for MCADD Neonates in Dried Blood Spots. Int J Mol Sci 2023; 24:ijms24119657. [PMID: 37298607 DOI: 10.3390/ijms24119657] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/02/2023] [Accepted: 05/16/2023] [Indexed: 06/12/2023] Open
Abstract
Medium-chain acyl-CoA dehydrogenase deficiency (MCADD) is the most common inherited mitochondrial metabolic disease of fatty acid β-oxidation, especially in newborns. MCADD is clinically diagnosed using Newborn Bloodspot Screening (NBS) and genetic testing. Still, these methods have limitations, such as false negatives or positives in NBS and the variants of uncertain significance in genetic testing. Thus, complementary diagnostic approaches for MCADD are needed. Recently, untargeted metabolomics has been proposed as a diagnostic approach for inherited metabolic diseases (IMDs) due to its ability to detect a wide range of metabolic alterations. We performed an untargeted metabolic profiling of dried blood spots (DBS) from MCADD newborns (n = 14) and healthy controls (n = 14) to discover potential metabolic biomarkers/pathways associated with MCADD. Extracted metabolites from DBS samples were analyzed using UPLC-QToF-MS for untargeted metabolomics analyses. Multivariate and univariate analyses were used to analyze the metabolomics data, and pathway and biomarker analyses were also performed on the significantly identified endogenous metabolites. The MCADD newborns had 1034 significantly dysregulated metabolites compared to healthy newborns (moderated t-test, no correction, p-value ≤ 0.05, FC 1.5). A total of 23 endogenous metabolites were up-regulated, while 84 endogenous metabolites were down-regulated. Pathway analyses showed phenylalanine, tyrosine, and tryptophan biosynthesis as the most affected pathways. Potential metabolic biomarkers for MCADD were PGP (a21:0/PG/F1alpha) and glutathione, with an area under the curve (AUC) of 0.949 and 0.898, respectively. PGP (a21:0/PG/F1alpha) was the first oxidized lipid in the top 15 biomarker list affected by MCADD. Additionally, glutathione was chosen to indicate oxidative stress events that could happen during fatty acid oxidation defects. Our findings suggest that MCADD newborns may have oxidative stress events as signs of the disease. However, further validations of these biomarkers are needed in future studies to ensure their accuracy and reliability as complementary markers with established MCADD markers for clinical diagnosis.
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Affiliation(s)
- Rajaa Sebaa
- Department of Medical Laboratories, College of Applied Medical Sciences, University of Shaqra, Al-Dawadmi 17472, Saudi Arabia
| | - Maha AlMogren
- Metabolomics Section, Department of Clinical Genomics, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh 11211, Saudi Arabia
- Department of Biochemistry and Molecular Medicine, College of Medicine, Al Faisal University, Riyadh 11533, Saudi Arabia
| | - Wafaa Alseraty
- Department of Nursing, College of Applied Medical Sciences, University of Shaqra, Al-Dawadmi 17472, Saudi Arabia
| | - Anas M Abdel Rahman
- Metabolomics Section, Department of Clinical Genomics, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh 11211, Saudi Arabia
- Department of Biochemistry and Molecular Medicine, College of Medicine, Al Faisal University, Riyadh 11533, Saudi Arabia
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Guerra IMS, Ferreira HB, Melo T, Rocha H, Moreira S, Diogo L, Domingues MR, Moreira ASP. Mitochondrial Fatty Acid β-Oxidation Disorders: From Disease to Lipidomic Studies-A Critical Review. Int J Mol Sci 2022; 23:13933. [PMID: 36430419 PMCID: PMC9696092 DOI: 10.3390/ijms232213933] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/29/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
Fatty acid oxidation disorders (FAODs) are inborn errors of metabolism (IEMs) caused by defects in the fatty acid (FA) mitochondrial β-oxidation. The most common FAODs are characterized by the accumulation of medium-chain FAs and long-chain (3-hydroxy) FAs (and their carnitine derivatives), respectively. These deregulations are associated with lipotoxicity which affects several organs and potentially leads to life-threatening complications and comorbidities. Changes in the lipidome have been associated with several diseases, including some IEMs. In FAODs, the alteration of acylcarnitines (CARs) and FA profiles have been reported in patients and animal models, but changes in polar and neutral lipid profile are still scarcely studied. In this review, we present the main findings on FA and CAR profile changes associated with FAOD pathogenesis, their correlation with oxidative damage, and the consequent disturbance of mitochondrial homeostasis. Moreover, alterations in polar and neutral lipid classes and lipid species identified so far and their possible role in FAODs are discussed. We highlight the need of mass-spectrometry-based lipidomic studies to understand (epi)lipidome remodelling in FAODs, thus allowing to elucidate the pathophysiology and the identification of possible biomarkers for disease prognosis and an evaluation of therapeutic efficacy.
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Affiliation(s)
- Inês M. S. Guerra
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Centre for Environmental and Marine Studies—CESAM, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Helena B. Ferreira
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Centre for Environmental and Marine Studies—CESAM, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Tânia Melo
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Centre for Environmental and Marine Studies—CESAM, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Hugo Rocha
- Newborn Screening, Metabolism and Genetics Unit, Human Genetics Department, National Institute of Health Doutor Ricardo Jorge, 4000-053 Porto, Portugal
- Department of Pathological, Cytological and Thanatological Anatomy, School of Health, Polytechnic Institute of Porto, 4200-072 Porto, Portugal
| | - Sónia Moreira
- Internal Medicine, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal
- Reference Center of Inherited Metabolic Diseases, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal
| | - Luísa Diogo
- Reference Center of Inherited Metabolic Diseases, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal
| | - Maria Rosário Domingues
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Centre for Environmental and Marine Studies—CESAM, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Ana S. P. Moreira
- Mass Spectrometry Center, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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Shcherbakova K, Schwarz A, Apryatin S, Karpenko M, Trofimov A. Supplementation of Regular Diet With Medium-Chain Triglycerides for Procognitive Effects: A Narrative Review. Front Nutr 2022; 9:934497. [PMID: 35911092 PMCID: PMC9334743 DOI: 10.3389/fnut.2022.934497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 06/15/2022] [Indexed: 01/09/2023] Open
Abstract
It is now widely accepted that ketosis (a physiological state characterized by elevated plasma ketone body levels) possesses a wide range of neuroprotective effects. There is a growing interest in the use of ketogenic supplements, including medium-chain triglycerides (MCT), to achieve intermittent ketosis without adhering to a strict ketogenic diet. MCT supplementation is an inexpensive and simple ketogenic intervention, proven to benefit both individuals with normal cognition and those suffering from mild cognitive impairment, Alzheimer's disease, and other cognitive disorders. The commonly accepted paradigm underlying MCT supplementation trials is that the benefits stem from ketogenesis and that MCT supplementation is safe. However, medium-chain fatty acids (MCFAs) may also exert effects in the brain directly. Moreover, MCFAs, long-chain fatty acids, and glucose participate in mutually intertwined metabolic pathways. Therefore, the metabolic effects must be considered if the desired procognitive effects require administering MCT in doses larger than 1 g/kg. This review summarizes currently available research on the procognitive effects of using MCTs as a supplement to regular feed/diet without concomitant reduction of carbohydrate intake and focuses on the revealed mechanisms linked to particular MCT metabolites (ketone bodies, MCFAs), highlighting open questions and potential considerations.
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Affiliation(s)
- Ksenia Shcherbakova
- I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, Saint Petersburg, Russia,*Correspondence: Ksenia Shcherbakova
| | - Alexander Schwarz
- Laboratory of the Molecular Mechanisms of Neuronal Interactions, Institute of Evolutionary Physiology and Biochemistry (RAS), Saint Petersburg, Russia
| | - Sergey Apryatin
- I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Marina Karpenko
- I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Alexander Trofimov
- I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, Saint Petersburg, Russia
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Nebie O, Carvalho K, Barro L, Delila L, Faivre E, Renn TY, Chou ML, Wu YW, Nyam-Erdene A, Chou SY, Buée L, Hu CJ, Peng CW, Devos D, Blum D, Burnouf T. Human platelet lysate biotherapy for traumatic brain injury: preclinical assessment. Brain 2021; 144:3142-3158. [PMID: 34086871 PMCID: PMC8634089 DOI: 10.1093/brain/awab205] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/13/2021] [Accepted: 05/11/2021] [Indexed: 11/24/2022] Open
Abstract
Traumatic brain injury (TBI) leads to major brain anatomopathological damages underlined by neuroinflammation, oxidative stress and progressive neurodegeneration, ultimately leading to motor and cognitive deterioration. The multiple pathological events resulting from TBI can be addressed not by a single therapeutic approach, but rather by a synergistic biotherapy capable of activating a complementary set of signalling pathways and providing synergistic neuroprotective, anti-inflammatory, antioxidative, and neurorestorative activities. Human platelet lysate might fulfil these requirements as it is composed of a plethora of biomolecules readily accessible as a TBI biotherapy. In the present study, we tested the therapeutic potential of human platelet lysate using in vitro and in vivo models of TBI. We first prepared and characterized platelet lysate from clinical-grade human platelet concentrates. Platelets were pelletized, lysed by three freeze-thaw cycles, and centrifuged. The supernatant was purified by 56°C 30 min heat treatment and spun to obtain the heat-treated platelet pellet lysate that was characterized by ELISA and proteomic analyses. Two mouse models were used to investigate platelet lysate neuroprotective potential. The injury was induced by an in-house manual controlled scratching of the animals' cortex or by controlled cortical impact injury. The platelet lysate treatment was performed by topical application of 60 µl in the lesioned area, followed by daily 60 µl intranasal administration from Day 1 to 6 post-injury. Platelet lysate proteomics identified over 1000 proteins including growth factors, neurotrophins, and antioxidants. ELISA detected several neurotrophic and angiogenic factors at ∼1-50 ng/ml levels. We demonstrate, using two mouse models of TBI, that topical application and intranasal platelet lysate consistently improved mouse motor function in the beam and rotarod tests, mitigated cortical neuroinflammation, and oxidative stress in the injury area, as revealed by downregulation of pro-inflammatory genes and the reduction in reactive oxygen species levels. Moreover, platelet lysate treatment reduced the loss of cortical synaptic proteins. Unbiased proteomic analyses revealed that heat-treated platelet pellet lysate reversed several pathways promoted by both controlled cortical impact and cortical brain scratch and related to transport, postsynaptic density, mitochondria or lipid metabolism. The present data strongly support, for the first time, that human platelet lysate is a reliable and effective therapeutic source of neurorestorative factors. Therefore, brain administration of platelet lysate is a therapeutical strategy that deserves serious and urgent consideration for universal brain trauma treatment.
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Affiliation(s)
- Ouada Nebie
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of
Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog—Lille Neuroscience and
Cognition, Lille F-59000, France
- Alzheimer and Tauopathies, LabEx DISTALZ, LiCEND, Lille F-59000,
France
| | - Kevin Carvalho
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog—Lille Neuroscience and
Cognition, Lille F-59000, France
- Alzheimer and Tauopathies, LabEx DISTALZ, LiCEND, Lille F-59000,
France
| | - Lassina Barro
- International PhD Program in Biomedical Engineering, Taipei Medical
University, Taipei, 11031, Taiwan
| | - Liling Delila
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of
Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | - Emilie Faivre
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog—Lille Neuroscience and
Cognition, Lille F-59000, France
- Alzheimer and Tauopathies, LabEx DISTALZ, LiCEND, Lille F-59000,
France
| | - Ting-Yi Renn
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical
University, Taipei, 11031, Taiwan
| | - Ming-Li Chou
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of
Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University,
Taipei, Taiwan
| | - Yu-Wen Wu
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of
Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | - Ariunjargal Nyam-Erdene
- International PhD Program in Biomedical Engineering, Taipei Medical
University, Taipei, 11031, Taiwan
| | - Szu-Yi Chou
- NeuroTMULille International Laboratory, Taipei Medical
University, Taipei, 11031, Taiwan
- PhD Program for Neural Regenerative Medicine, College of Medical Science and
Technology, Taipei Medical University and National Health Research
Institutes, Taipei, 11031, Taiwan
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science
and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Luc Buée
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog—Lille Neuroscience and
Cognition, Lille F-59000, France
- Alzheimer and Tauopathies, LabEx DISTALZ, LiCEND, Lille F-59000,
France
- NeuroTMULille International Laboratory, Univ. Lille, Lille,
F-59000 France
| | - Chaur-Jong Hu
- NeuroTMULille International Laboratory, Taipei Medical
University, Taipei, 11031, Taiwan
- PhD Program for Neural Regenerative Medicine, College of Medical Science and
Technology, Taipei Medical University and National Health Research
Institutes, Taipei, 11031, Taiwan
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science
and Technology, Taipei Medical University, Taipei, 11031, Taiwan
- Dementia Center, Department of Neurology, Shuang Ho Hospital, Taipei Medical
University, New Taipei City, 23561, Taiwan
- Neurology, School of Medicine, College of Medicine, Taipei Medical
University, Taipei, 11031, Taiwan
| | - Chih-Wei Peng
- International PhD Program in Biomedical Engineering, Taipei Medical
University, Taipei, 11031, Taiwan
- School of Biomedical Engineering, College of Biomedical Engineering, Taipei
Medical University, Taipei, 11031, Taiwan
| | - David Devos
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog—Lille Neuroscience and
Cognition, Lille F-59000, France
- NeuroTMULille International Laboratory, Univ. Lille, Lille,
F-59000 France
| | - David Blum
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog—Lille Neuroscience and
Cognition, Lille F-59000, France
- Alzheimer and Tauopathies, LabEx DISTALZ, LiCEND, Lille F-59000,
France
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science
and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Thierry Burnouf
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of
Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- International PhD Program in Biomedical Engineering, Taipei Medical
University, Taipei, 11031, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University,
Taipei, Taiwan
- School of Biomedical Engineering, College of Biomedical Engineering, Taipei
Medical University, Taipei, 11031, Taiwan
- International PhD Program in Cell Therapy and Regeneration, College of
Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Brain and Consciousness Research Centre, Taipei Medical University Shuang Ho
Hospital, New Taipei City, 23561, Taiwan
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7
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Increased antioxidant response in medium-chain acyl-CoA dehydrogenase deficiency: does lipoic acid have a protective role? Pediatr Res 2020; 88:556-564. [PMID: 32045933 DOI: 10.1038/s41390-020-0801-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 09/30/2019] [Accepted: 12/07/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Medium-chain acyl-CoA dehydrogenase (MCAD) deficiency (MCADD) is the most frequent fatty acid oxidation (FAO) defect in humans. MCAD-deficient fibroblasts are more resistant to oxidative stress-induced cell death than other FAO defects and healthy controls. METHODS Herein we investigate the antioxidant response and mitochondrial function in fibroblasts from MCAD-deficient patients (c.985 A>G/c.985 A>G) and healthy controls. RESULTS MCAD-deficient fibroblasts showed increased level of mitochondrial superoxide, while lipids were less oxidatively damaged, and higher amount of manganese superoxide dismutase were detected compared to healthy controls, showing forceful antioxidant system in MCADD. We showed increased maximal respiration and reserve capacity in MCAD-deficient fibroblasts compared to controls, indicating more capacity through the tricarboxylic acid (TCA) cycle and subsequently respiratory chain. This led us to study the pyruvate dehydrogenase complex (PDC), the key enzyme in the glycolysis releasing acetyl-CoA to the TCA cycle. MCAD-deficient fibroblasts displayed not only significantly increased PDC but also increased lipoylated PDC protein levels compared to healthy controls. CONCLUSIONS Based on these findings, we raise the interesting hypothesis that increased PDC-bound lipoic acid, synthesized from accumulated octanoic acid in MCADD, may affect the cellular antioxidant pool in MCADD.
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Ribas GS, Vargas CR. Evidence that Oxidative Disbalance and Mitochondrial Dysfunction are Involved in the Pathophysiology of Fatty Acid Oxidation Disorders. Cell Mol Neurobiol 2020; 42:521-532. [PMID: 32876899 DOI: 10.1007/s10571-020-00955-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/22/2020] [Indexed: 12/15/2022]
Abstract
Mitochondrial fatty acid β-oxidation disorders (FAODs) are a group of about 20 diseases which are caused by specific mutations in genes that codify proteins or enzymes involved in the fatty acid transport and mitochondrial β-oxidation. As a consequence of these inherited metabolic defects, fatty acids can not be used as an appropriate energetic source during special conditions, such as prolonged fasting, exercise or other catabolic states. Therefore, patients usually present hepatopathy, cardiomyopathy, severe skeletal myopathy and neuropathy, besides biochemical features like hypoketotic hypoglycemia, metabolic acidosis, hypotony and hyperammonemia. This set of symptoms seems to be related not only with the energy deficiency, but also with toxic effects provoked by fatty acids and carnitine derivatives accumulated in the tissues of the patients. The understanding of the mechanisms by which these metabolites provoke tissue injury in FAODs is crucial for the developmental of novel therapeutic strategies that promote increased life expectancy, as well as improved life quality for patients. In this sense, the objective of this review is to present evidence from the scientific literature on the role of oxidative damage and mitochondrial dysfunction in the pathogenesis of the most prevalent FAODs: medium-chain acyl-CoA dehydrogenase (MCAD), long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) and very long-chain acyl-CoA dehydrogenase (VLCAD) deficiencies. It is expected that the findings presented in this review, obtained from both animal model and patients studies, may contribute to a better comprehension of the pathophysiology of these diseases.
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Affiliation(s)
- Graziela Schmitt Ribas
- Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carmen Regla Vargas
- Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Serviço de Genética Médica, Hospital de Clíınicas de Porto Alegre, Ramiro Barcelos, 2350, Porto Alegre, RS, 90035-003, Brazil.
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9
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Masschelin PM, Cox AR, Chernis N, Hartig SM. The Impact of Oxidative Stress on Adipose Tissue Energy Balance. Front Physiol 2020; 10:1638. [PMID: 32038305 PMCID: PMC6987041 DOI: 10.3389/fphys.2019.01638] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 12/30/2019] [Indexed: 12/21/2022] Open
Abstract
Overnutrition and sedentary activity reinforce the growing trend of worldwide obesity, insulin resistance, and type 2 diabetes. However, we have limited insight into how food intake generates sophisticated metabolic perturbations associated with obesity. Accumulation of mitochondrial oxidative stress contributes to the metabolic changes in obesity, but the mechanisms and significance are unclear. In white adipose tissue (WAT), mitochondrial oxidative stress, and the generation of reactive oxygen species (ROS) impact the endocrine and metabolic function of fat cells. The central role of mitochondria in nutrient handling suggests pharmacological targeting of pathological oxidative stress likely improves the metabolic profile of obesity. This review will summarize the critical pathogenic mechanisms of obesity-driven oxidative stress in WAT.
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Affiliation(s)
- Peter M Masschelin
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Aaron R Cox
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Natasha Chernis
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Sean M Hartig
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
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10
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de Moraes MS, Guerreiro G, Sitta A, de Moura Coelho D, Manfredini V, Wajner M, Vargas CR. Oxidative damage in mitochondrial fatty acids oxidation disorders patients and the in vitro effect of l-carnitine on DNA damage induced by the accumulated metabolites. Arch Biochem Biophys 2019; 679:108206. [PMID: 31760122 DOI: 10.1016/j.abb.2019.108206] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 11/19/2019] [Accepted: 11/20/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND The mitochondrial fatty acids oxidation disorders (FAOD) are inherited metabolic disorders (IMD) characterized by the accumulation of fatty acids of different sizes of chain according to the affected enzyme. METHODS This study evaluated the lipid peroxidation by the measurement of 8-isoprostanes, nitrosative stress parameters by the measurement of nitrite and nitrate content and DNA and RNA oxidative damage by the measurement of oxidized guanine species in urine samples from long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD), medium-chain acyl-CoA dehydrogenase deficiency (MCADD) and multiple acyl-CoA dehydrogenase deficiency (MADD) patients. Also, we analyzed the in vitro DNA damage by comet assay induced by adipic acid, suberic acid, hexanoylglycine and suberylglycine, separated and in combination, as well as the effect of l-carnitine in human leukocytes. RESULTS An increase on 8-isoprostanes levels in all groups of patients was observed. The nitrite and nitrate levels were increased in LCHADD patients. DNA and RNA damage evaluation revealed increase on oxidized guanine species levels in LCHADD and MADD patients. The in vitro evaluation revealed an increase on the DNA damage induced by all metabolites, besides a potencialyzed effect. l-carnitine decreased the DNA damage induced by the metabolites. CONCLUSION These results demonstrate that toxic metabolites accumulated could be related to the increased oxidative and nitrosative stress of FAOD patients and that the metabolites, separated and in combination, cause DNA damage, which was reduced by l-carnitine, demonstrating antioxidant protection. GENERAL SIGNIFICANCE This work demonstrated oxidative stress in FAOD patients and the genotoxic potential of MCADD metabolites and the protective effect of l-carnitine.
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Affiliation(s)
- Maira Silmara de Moraes
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, UFRGS, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, UFRGS, Porto Alegre, RS, Brazil.
| | - Gilian Guerreiro
- Serviço de Genética Médica, HCPA, UFRGS, Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Porto Alegre, RS, Brazil.
| | - Angela Sitta
- Serviço de Genética Médica, HCPA, UFRGS, Porto Alegre, RS, Brazil.
| | | | - Vanusa Manfredini
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, Uruguaiana, RS, Brazil.
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, UFRGS, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, UFRGS, Porto Alegre, RS, Brazil.
| | - Carmen Regla Vargas
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, UFRGS, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, UFRGS, Porto Alegre, RS, Brazil; Faculdade de Farmácia, UFRGS, Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Porto Alegre, RS, Brazil.
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11
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Lim SC, Tajika M, Shimura M, Carey KT, Stroud DA, Murayama K, Ohtake A, McKenzie M. Loss of the Mitochondrial Fatty Acid β-Oxidation Protein Medium-Chain Acyl-Coenzyme A Dehydrogenase Disrupts Oxidative Phosphorylation Protein Complex Stability and Function. Sci Rep 2018; 8:153. [PMID: 29317722 PMCID: PMC5760697 DOI: 10.1038/s41598-017-18530-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 12/13/2017] [Indexed: 12/30/2022] Open
Abstract
Medium-chain acyl-Coenzyme A dehydrogenase (MCAD) is involved in the initial step of mitochondrial fatty acid β-oxidation (FAO). Loss of function results in MCAD deficiency, a disorder that usually presents in childhood with hypoketotic hypoglycemia, vomiting and lethargy. While the disruption of mitochondrial fatty acid metabolism is the primary metabolic defect, secondary defects in mitochondrial oxidative phosphorylation (OXPHOS) may also contribute to disease pathogenesis. Therefore, we examined OXPHOS activity and stability in MCAD-deficient patient fibroblasts that have no detectable MCAD protein. We found a deficit in mitochondrial oxygen consumption, with reduced steady-state levels of OXPHOS complexes I, III and IV, as well as the OXPHOS supercomplex. To examine the mechanisms involved, we generated an MCAD knockout (KO) using human 143B osteosarcoma cells. These cells also exhibited defects in OXPHOS complex function and steady-state levels, as well as disrupted biogenesis of newly-translated OXPHOS subunits. Overall, our findings suggest that the loss of MCAD is associated with a reduction in steady-state OXPHOS complex levels, resulting in secondary defects in OXPHOS function which may contribute to the pathology of MCAD deficiency.
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Affiliation(s)
- Sze Chern Lim
- Centre for Genetic Diseases, Hudson Institute of Medical Research, 3168, Melbourne, Australia.,Department of Molecular and Translational Science, Monash University, 3168, Melbourne, Australia
| | - Makiko Tajika
- Department of Metabolism, Chiba Children's Hospital, 266-0007, Chiba, Japan
| | - Masaru Shimura
- Department of Metabolism, Chiba Children's Hospital, 266-0007, Chiba, Japan
| | - Kirstyn T Carey
- Centre for Cancer Research, Hudson Institute of Medical Research, 3168, Melbourne, Australia
| | - David A Stroud
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, 3800, Melbourne, Australia
| | - Kei Murayama
- Department of Metabolism, Chiba Children's Hospital, 266-0007, Chiba, Japan
| | - Akira Ohtake
- Department of Pediatrics, Saitama Medical University, 350-0495, Saitama, Japan
| | - Matthew McKenzie
- Centre for Genetic Diseases, Hudson Institute of Medical Research, 3168, Melbourne, Australia. .,Department of Molecular and Translational Science, Monash University, 3168, Melbourne, Australia.
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12
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Amaral AU, Cecatto C, da Silva JC, Wajner A, Wajner M. Mechanistic Bases of Neurotoxicity Provoked by Fatty Acids Accumulating in MCAD and LCHAD Deficiencies. JOURNAL OF INBORN ERRORS OF METABOLISM AND SCREENING 2017. [DOI: 10.1177/2326409817701472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Alexandre U. Amaral
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Departamento de Ciências Biológicas, Universidade Regional Integrada do Alto Uruguai e das Missões, Erechim, Rio Grande do Sul, Brazil
| | - Cristiane Cecatto
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Janaína C. da Silva
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Alessandro Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
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13
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González-Domínguez R. Medium-chain Fatty Acids as Biomarkers of Mitochondrial Dysfunction in Traumatic Brain Injury. EBioMedicine 2016; 12:8-9. [PMID: 27692983 PMCID: PMC5078626 DOI: 10.1016/j.ebiom.2016.09.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 09/22/2016] [Indexed: 01/26/2023] Open
Affiliation(s)
- Raúl González-Domínguez
- Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, 21007, Spain; International Campus of Excellence CeiA3, University of Huelva, 21007, Spain.
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14
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Orešič M, Posti JP, Kamstrup-Nielsen MH, Takala RSK, Lingsma HF, Mattila I, Jäntti S, Katila AJ, Carpenter KLH, Ala-Seppälä H, Kyllönen A, Maanpää HR, Tallus J, Coles JP, Heino I, Frantzén J, Hutchinson PJ, Menon DK, Tenovuo O, Hyötyläinen T. Human Serum Metabolites Associate With Severity and Patient Outcomes in Traumatic Brain Injury. EBioMedicine 2016; 12:118-126. [PMID: 27665050 PMCID: PMC5078571 DOI: 10.1016/j.ebiom.2016.07.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 07/13/2016] [Accepted: 07/13/2016] [Indexed: 11/23/2022] Open
Abstract
Traumatic brain injury (TBI) is a major cause of death and disability worldwide, especially in children and young adults. TBI is an example of a medical condition where there are still major lacks in diagnostics and outcome prediction. Here we apply comprehensive metabolic profiling of serum samples from TBI patients and controls in two independent cohorts. The discovery study included 144 TBI patients, with the samples taken at the time of hospitalization. The patients were diagnosed as severe (sTBI; n = 22), moderate (moTBI; n = 14) or mild TBI (mTBI; n = 108) according to Glasgow Coma Scale. The control group (n = 28) comprised of acute orthopedic non-brain injuries. The validation study included sTBI (n = 23), moTBI (n = 7), mTBI (n = 37) patients and controls (n = 27). We show that two medium-chain fatty acids (decanoic and octanoic acids) and sugar derivatives including 2,3-bisphosphoglyceric acid are strongly associated with severity of TBI, and most of them are also detected at high concentrations in brain microdialysates of TBI patients. Based on metabolite concentrations from TBI patients at the time of hospitalization, an algorithm was developed that accurately predicted the patient outcomes (AUC = 0.84 in validation cohort). Addition of the metabolites to the established clinical model (CRASH), comprising clinical and computed tomography data, significantly improved prediction of patient outcomes. The identified ‘TBI metabotype’ in serum, that may be indicative of disrupted blood-brain barrier, of protective physiological response and altered metabolism due to head trauma, offers a new avenue for the development of diagnostic and prognostic markers of broad spectrum of TBIs. The study reports that serum metabolites are sensitive to severity of TBI as well as predict the patient outcomes. The findings are indicative of disruption in blood brain barrier and of protective response and altered TBI metabolism. Metabolites significantly improved the prediction of patient outcomes when added to the established clinical model.
Traumatic brain injury (TBI) is an example of a medical condition where there are still major lacks in diagnostics, outcome prediction, and the therapy development. Since the blood-brain barrier prevents diffusion of most water-soluble molecules with molecular mass over 500 Da, here we hypothesized that circulating small molecules (metabolites) are a potential source of TBI markers. Based on serum metabolomic studies in two independent cohorts, we found that metabolites are sensitive to severity of TBI as well as predict the patient outcomes. The findings of this study may pave the way for new diagnostic tools for TBI.
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Affiliation(s)
- Matej Orešič
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, FI-20520 Turku, Finland; Steno Diabetes Center A/S, DK-2820 Gentofte, Denmark; VTT Technical Research Centre of Finland, FI-02044, VTT, Espoo, Finland.
| | - Jussi P Posti
- Division of Clinical Neurosciences, Department of Neurosurgery, Turku University Hospital, FI-20521 Turku, Finland; Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | | | - Riikka S K Takala
- Perioperative Services, Intensive Care Medicine and Pain Management, Turku University Hospital, FI-20521 Turku, Finland
| | - Hester F Lingsma
- Department of Public Health, Erasmus MC-University Medical Center Rotterdam, The Netherlands
| | - Ismo Mattila
- Steno Diabetes Center A/S, DK-2820 Gentofte, Denmark; VTT Technical Research Centre of Finland, FI-02044, VTT, Espoo, Finland
| | - Sirkku Jäntti
- VTT Technical Research Centre of Finland, FI-02044, VTT, Espoo, Finland
| | - Ari J Katila
- Perioperative Services, Intensive Care Medicine and Pain Management, Turku University Hospital, FI-20521 Turku, Finland
| | - Keri L H Carpenter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK
| | - Henna Ala-Seppälä
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | - Anna Kyllönen
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | - Henna-Riikka Maanpää
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | - Jussi Tallus
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | - Jonathan P Coles
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Box 93, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK
| | - Iiro Heino
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | - Janek Frantzén
- Division of Clinical Neurosciences, Department of Neurosurgery, Turku University Hospital, FI-20521 Turku, Finland; Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland
| | - Peter J Hutchinson
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK
| | - David K Menon
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Box 93, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK.
| | - Olli Tenovuo
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital, FI-20521 Turku, Finland; Department of Neurology, University of Turku, FI-20014 Turku, Finland.
| | - Tuulia Hyötyläinen
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, FI-20520 Turku, Finland; Steno Diabetes Center A/S, DK-2820 Gentofte, Denmark; VTT Technical Research Centre of Finland, FI-02044, VTT, Espoo, Finland; Clinical Research Institute, Helsinki University Central Hospital, FI-00290 Helsinki, Finland; Department of Chemistry, Örebro University, 702 81 Örebro, Sweden.
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15
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cis-4-Decenoic and decanoic acids impair mitochondrial energy, redox and Ca(2+) homeostasis and induce mitochondrial permeability transition pore opening in rat brain and liver: Possible implications for the pathogenesis of MCAD deficiency. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1857:1363-1372. [PMID: 27240720 DOI: 10.1016/j.bbabio.2016.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/17/2016] [Accepted: 05/25/2016] [Indexed: 12/31/2022]
Abstract
Medium-chain acyl-CoA dehydrogenase (MCAD) deficiency is biochemically characterized by tissue accumulation of octanoic (OA), decanoic (DA) and cis-4-decenoic (cDA) acids, as well as by their carnitine by-products. Untreated patients present episodic encephalopathic crises and biochemical liver alterations, whose pathophysiology is poorly known. We investigated the effects of OA, DA, cDA, octanoylcarnitine (OC) and decanoylcarnitine (DC) on critical mitochondrial functions in rat brain and liver. DA and cDA increased resting respiration and diminished ADP- and CCCP-stimulated respiration and complexes II-III and IV activities in both tissues. The data indicate that these compounds behave as uncouplers and metabolic inhibitors of oxidative phosphorylation. Noteworthy, metabolic inhibition was more evident in brain as compared to liver. DA and cDA also markedly decreased mitochondrial membrane potential, NAD(P)H content and Ca(2+) retention capacity in Ca(2+)-loaded brain and liver mitochondria. The reduction of Ca(2+) retention capacity was more pronounced in liver and totally prevented by cyclosporine A and ADP, as well as by ruthenium red, demonstrating the involvement of mitochondrial permeability transition (mPT) and Ca(2+). Furthermore, cDA induced lipid peroxidation in brain and liver mitochondria and increased hydrogen peroxide formation in brain, suggesting the participation of oxidative damage in cDA-induced alterations. Interestingly, OA, OC and DC did not alter the evaluated parameters, implying lower toxicity for these compounds. Our results suggest that DA and cDA, in contrast to OA and medium-chain acylcarnitines, disturb important mitochondrial functions in brain and liver by multiple mechanisms that are possibly involved in the neuropathology and liver alterations observed in MCAD deficiency.
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16
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Schönfeld P, Wojtczak L. Short- and medium-chain fatty acids in energy metabolism: the cellular perspective. J Lipid Res 2016; 57:943-54. [PMID: 27080715 DOI: 10.1194/jlr.r067629] [Citation(s) in RCA: 585] [Impact Index Per Article: 73.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Indexed: 12/12/2022] Open
Abstract
Short- and medium-chain fatty acids (SCFAs and MCFAs), independently of their cellular signaling functions, are important substrates of the energy metabolism and anabolic processes in mammals. SCFAs are mostly generated by colonic bacteria and are predominantly metabolized by enterocytes and liver, whereas MCFAs arise mostly from dietary triglycerides, among them milk and dairy products. A common feature of SCFAs and MCFAs is their carnitine-independent uptake and intramitochondrial activation to acyl-CoA thioesters. Contrary to long-chain fatty acids, the cellular metabolism of SCFAs and MCFAs depends to a lesser extent on fatty acid-binding proteins. SCFAs and MCFAs modulate tissue metabolism of carbohydrates and lipids, as manifested by a mostly inhibitory effect on glycolysis and stimulation of lipogenesis or gluconeogenesis. SCFAs and MCFAs exert no or only weak protonophoric and lytic activities in mitochondria and do not significantly impair the electron transport in the respiratory chain. SCFAs and MCFAs modulate mitochondrial energy production by two mechanisms: they provide reducing equivalents to the respiratory chain and partly decrease efficacy of oxidative ATP synthesis.
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Affiliation(s)
- Peter Schönfeld
- Institute of Biochemistry and Cell Biology, Otto-von-Guericke University, Magdeburg, 39120 Magdeburg, Germany
| | - Lech Wojtczak
- Nencki Institute of Experimental Biology, 02-093 Warsaw, Poland
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17
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Mitochondrial dysfunction in fatty acid oxidation disorders: insights from human and animal studies. Biosci Rep 2015; 36:e00281. [PMID: 26589966 PMCID: PMC4718505 DOI: 10.1042/bsr20150240] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 11/20/2015] [Indexed: 12/17/2022] Open
Abstract
Patients affected by FAOD commonly present with hepatopathy, cardiomyopathy, skeletal myopathy and encephalopathy. Human and animal evidences indicate that mitochondrial functions are disrupted by fatty acids and derivatives accumulating in these disorders, suggesting that lipotoxicity may contribute to their pathogenesis. Mitochondrial fatty acid oxidation (FAO) plays a pivotal role in maintaining body energy homoeostasis mainly during catabolic states. Oxidation of fatty acids requires approximately 25 proteins. Inherited defects of FAO have been identified in the majority of these proteins and constitute an important group of inborn errors of metabolism. Affected patients usually present with severe hepatopathy, cardiomyopathy and skeletal myopathy, whereas some patients may suffer acute and/or progressive encephalopathy whose pathogenesis is poorly known. In recent years growing evidence has emerged indicating that energy deficiency/disruption of mitochondrial homoeostasis is involved in the pathophysiology of some fatty acid oxidation defects (FAOD), although the exact underlying mechanisms are not yet established. Characteristic fatty acids and carnitine derivatives are found at high concentrations in these patients and more markedly during episodes of metabolic decompensation that are associated with worsening of clinical symptoms. Therefore, it is conceivable that these compounds may be toxic. We will briefly summarize the current knowledge obtained from patients and genetic mouse models with these disorders indicating that disruption of mitochondrial energy, redox and calcium homoeostasis is involved in the pathophysiology of the tissue damage in the more common FAOD, including medium-chain acyl-CoA dehydrogenase (MCAD), long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) and very long-chain acyl-CoA dehydrogenase (VLCAD) deficiencies. We will also provide evidence that the fatty acids and derivatives that accumulate in these diseases disrupt mitochondrial homoeostasis. The elucidation of the toxic mechanisms of these compounds may offer new perspectives for potential novel adjuvant therapeutic strategies in selected disorders of this group.
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18
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Schuck PF, Malgarin F, Cararo JH, Cardoso F, Streck EL, Ferreira GC. Phenylketonuria Pathophysiology: on the Role of Metabolic Alterations. Aging Dis 2015; 6:390-9. [PMID: 26425393 DOI: 10.14336/ad.2015.0827] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 08/27/2015] [Indexed: 11/01/2022] Open
Abstract
Phenylketonuria (PKU) is an inborn error of phenylalanine (Phe) metabolism caused by the deficiency of phenylalanine hydroxylase. This deficiency leads to the accumulation of Phe and its metabolites in tissues and body fluids of PKU patients. The main signs and symptoms are found in the brain but the pathophysiology of this disease is not well understood. In this context, metabolic alterations such as oxidative stress, mitochondrial dysfunction, and impaired protein and neurotransmitters synthesis have been described both in animal models and patients. This review aims to discuss the main metabolic disturbances reported in PKU and relate them with the pathophysiology of this disease. The elucidation of the pathophysiology of brain damage found in PKU patients will help to develop better therapeutic strategies to improve quality of life of patients affected by this condition.
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Affiliation(s)
- Patrícia Fernanda Schuck
- 1 Laboratório de Erros Inatos do Metabolismo, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
| | - Fernanda Malgarin
- 1 Laboratório de Erros Inatos do Metabolismo, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
| | - José Henrique Cararo
- 1 Laboratório de Erros Inatos do Metabolismo, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
| | - Fabiola Cardoso
- 2 Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Emilio Luiz Streck
- 3 Laboratório de Bioenergética, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
| | - Gustavo Costa Ferreira
- 2 Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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19
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Najdekr L, Gardlo A, Mádrová L, Friedecký D, Janečková H, Correa ES, Goodacre R, Adam T. Oxidized phosphatidylcholines suggest oxidative stress in patients with medium-chain acyl-CoA dehydrogenase deficiency. Talanta 2015; 139:62-6. [PMID: 25882409 DOI: 10.1016/j.talanta.2015.02.041] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 02/16/2015] [Accepted: 02/23/2015] [Indexed: 11/30/2022]
Abstract
Inborn errors of metabolism encompass a large group of diseases caused by enzyme deficiencies and are therefore amenable to metabolomics investigations. Medium chain acyl-CoA dehydrogenase deficiency (MCADD) is a defect in β-oxidation of fatty acids, and is one of the most well understood disorders. We report here the use of liquid chromatography-mass spectrometry (LC-MS) based untargeted metabolomics and targeted flow injection analysis-tandem mass spectrometry (FIA-TMS) that lead to discovery of novel compounds of oxidative stress. Dry blood spots of controls (n=25) and patient samples (n=25) were extracted by methanol/water (1/1, v/v) and these supernatants were analyzed by LC-MS method with detection by an Orbitrap Elite MS. Data were processed by XCMS and CAMERA followed by dimension reduction methods. Patients were clearly distinguished from controls in PCA. S-plot derived from OPLS-DA indicated that medium-chain acylcarnitines (octanoyl, decenoyl and decanoyl carnitines) as well as three phosphatidylcholines (PC(16:0,9:0(COOH))), PC(18:0,5:0(COOH)) and PC(16:0,8:0(COOH)) were important metabolites for differentiation between patients and healthy controls. In order to biologically validate these discriminatory molecules as indicators for oxidative stress, a second cohort of individuals were analyzed, including MCADD (n=25) and control (n=250) samples. These were measured by a modified newborn screening method using FIA-TMS (API 4000) in MRM mode. Calculated p-values for PC(16:0,9:0(COOH)), PC(18:0,5:0(COOH)) and PC(16:0,8:0(COOH)) were 1.927×10(-14), 2.391×10(-15) and 3.354×10(-15) respectively. These elevated oxidized phospholipids indeed show an increased presence of oxidative stress in MCADD patients as one of the pathophysiological mechanisms of the disease.
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Affiliation(s)
- Lukáš Najdekr
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Hnevotínská 5, Olomouc 775 15, Czech Republic
| | - Alžběta Gardlo
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Hnevotínská 5, Olomouc 775 15, Czech Republic
| | - Lucie Mádrová
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Hnevotínská 5, Olomouc 775 15, Czech Republic
| | - David Friedecký
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Hnevotínská 5, Olomouc 775 15, Czech Republic; Department of Clinical Biochemistry, University Hospital in Olomouc, I.P. Pavlova 6, 775 20 Olomouc, Czech Republic
| | - Hana Janečková
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Hnevotínská 5, Olomouc 775 15, Czech Republic; Department of Clinical Biochemistry, University Hospital in Olomouc, I.P. Pavlova 6, 775 20 Olomouc, Czech Republic
| | - Elon S Correa
- School of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Royston Goodacre
- School of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Tomáš Adam
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Hnevotínská 5, Olomouc 775 15, Czech Republic; Department of Clinical Biochemistry, University Hospital in Olomouc, I.P. Pavlova 6, 775 20 Olomouc, Czech Republic.
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Tonin AM, Amaral AU, Busanello EN, Gasparotto J, Gelain DP, Gregersen N, Wajner M. Mitochondrial bioenergetics deregulation caused by long-chain 3-hydroxy fatty acids accumulating in LCHAD and MTP deficiencies in rat brain: a possible role of mPTP opening as a pathomechanism in these disorders? Biochim Biophys Acta Mol Basis Dis 2014; 1842:1658-67. [PMID: 24946182 DOI: 10.1016/j.bbadis.2014.06.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 05/06/2014] [Accepted: 06/09/2014] [Indexed: 10/25/2022]
Abstract
Long-chain 3-hydroxylated fatty acids (LCHFA) accumulate in long-chain 3-hydroxy-acyl-CoA dehydrogenase (LCHAD) and mitochondrial trifunctional protein (MTP) deficiencies. Affected patients usually present severe neonatal symptoms involving cardiac and hepatic functions, although long-term neurological abnormalities are also commonly observed. Since the underlying mechanisms of brain damage are practically unknown and have not been properly investigated, we studied the effects of LCHFA on important parameters of mitochondrial homeostasis in isolated mitochondria from cerebral cortex of developing rats. 3-Hydroxytetradecanoic acid (3 HTA) reduced mitochondrial membrane potential, NAD(P)H levels, Ca(2+) retention capacity and ATP content, besides inducing swelling, cytochrome c release and H2O2 production in Ca(2+)-loaded mitochondrial preparations. We also found that cyclosporine A plus ADP, as well as ruthenium red, a Ca(2+) uptake blocker, prevented these effects, suggesting the involvement of the mitochondrial permeability transition pore (mPTP) and an important role for Ca(2+), respectively. 3-Hydroxydodecanoic and 3-hydroxypalmitic acids, that also accumulate in LCHAD and MTP deficiencies, similarly induced mitochondrial swelling and decreased ATP content, but to a variable degree pending on the size of their carbon chain. It is proposed that mPTP opening induced by LCHFA disrupts brain bioenergetics and may contribute at least partly to explain the neurologic dysfunction observed in patients affected by LCHAD and MTP deficiencies.
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Affiliation(s)
- Anelise Miotti Tonin
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Research Unit for Molecular Medicine, Aarhus University Hospital, Department of Clinical Medicine, Aarhus University, 8200 Aarhus, Denmark
| | - Alexandre Umpierrez Amaral
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Estela Natacha Busanello
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Juciano Gasparotto
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Daniel P Gelain
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Niels Gregersen
- Research Unit for Molecular Medicine, Aarhus University Hospital, Department of Clinical Medicine, Aarhus University, 8200 Aarhus, Denmark
| | - Moacir Wajner
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, RS, Brazil.
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Tonin AM, Grings M, Knebel LA, Zanatta Â, Moura AP, Ribeiro CAJ, Leipnitz G, Wajner M. Disruption of redox homeostasis in cerebral cortex of developing rats by acylcarnitines accumulating in medium-chain acyl-CoA dehydrogenase deficiency. Int J Dev Neurosci 2012; 30:383-90. [PMID: 22472139 DOI: 10.1016/j.ijdevneu.2012.03.238] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 03/07/2012] [Accepted: 03/17/2012] [Indexed: 12/13/2022] Open
Abstract
Medium-chain fatty acids and acylcarnitines accumulate in medium-chain acyl-CoA dehydrogenase deficiency (MCADD), the most frequent fatty acid oxidation defect clinically characterized by episodic crises with vomiting, seizures and coma. Considering that the pathophysiology of the neurological symptoms observed in MCADD is poorly known and, to our knowledge, there is no report on the involvement of acylcarnitines in the brain damage presented by the affected patients, the objective of the present study was to investigate the in vitro effects of hexanoylcarnitine (HC), octanoylcarnitine, decanoylcarnitine (DC) and cis-4-decenoylcarnitine (cDC) at concentrations varying from 0.01 to 1.0mM on important oxidative stress parameters in cerebral cortex of young rats. HC, DC and cDC significantly induced lipid peroxidation, as determined by increased thiobarbituric acid-reactive substances (TBA-RS) values. In addition, carbonyl formation was significantly augmented and sulfhydryl content diminished by DC, reflecting induction of protein oxidative damage. HC, DC and cDC also decreased glutathione (GSH) levels, the most important brain antioxidant defense. Furthermore, DC-induced elevation of TBA-RS values and decrease of GSH levels were prevented by the free radical scavengers melatonin and α-tocopherol, indicating the involvement of reactive oxygen species in these effects. We also found that l-carnitine itself did not induce lipid and protein oxidative damage, neither reduced the antioxidant defenses. Our present data show that the major medium-chain acylcarnitines accumulating in MCADD elicit oxidative stress in rat brain. It is therefore presumed that these compounds may be involved to a certain extent in the pathogenesis of the neurologic dysfunction of MCADD.
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Affiliation(s)
- Anelise M Tonin
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Toxicity of octanoate and decanoate in rat peripheral tissues: evidence of bioenergetic dysfunction and oxidative damage induction in liver and skeletal muscle. Mol Cell Biochem 2011; 361:329-35. [PMID: 22015654 DOI: 10.1007/s11010-011-1119-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Accepted: 10/07/2011] [Indexed: 10/16/2022]
Abstract
The accumulation of octanoic (OA) and decanoic (DA) acids in tissue is the common finding in medium-chain acyl-coenzyme A dehydrogenase deficiency (MCADD), the most frequent defect of fatty acid oxidation. Affected patients present hypoketotic hypoglycemia, rhabdomyolysis, hepatomegaly, seizures and lethargy, which may progress to coma and death. At present, the pathophysiological mechanisms underlying hepatic and skeletal muscle alterations in affected patients are poorly known. Therefore, in the present work, we investigated the in vitro effects of OA and DA, the accumulating metabolites in MCADD, on various bioenergetics and oxidative stress parameters. It was verified that OA and DA decreased complexes I-III, II-III and IV activities in liver and also inhibit complex IV activity in skeletal muscle. In addition, DA decreased complexes II-III activity in skeletal muscle. We also verified that OA and DA increased TBA-RS levels and carbonyl content in both tissues. Finally, DA, but not OA, significantly decreased GSH levels in rat skeletal muscle. Our present data show that the medium-chain fatty acids that accumulate in MCADD impair electron transfer through respiratory chain and elicit oxidative damage in rat liver and skeletal muscle. It may be therefore presumed that these mechanisms are involved in the pathophysiology of the hepatopathy and rhabdomyolysis presented by MCADD-affected patients.
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Zolkipli Z, Pedersen CB, Lamhonwah AM, Gregersen N, Tein I. Vulnerability to oxidative stress in vitro in pathophysiology of mitochondrial short-chain acyl-CoA dehydrogenase deficiency: response to antioxidants. PLoS One 2011; 6:e17534. [PMID: 21483766 PMCID: PMC3069965 DOI: 10.1371/journal.pone.0017534] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Accepted: 02/07/2011] [Indexed: 12/14/2022] Open
Abstract
Objective To elucidate the pathophysiology of SCAD deficient patients who have a
unique neurological phenotype, among fatty acid oxidation disorders, with
early developmental delay, CNS malformations, intractable seizures, myopathy
and clinical signs suggesting oxidative stress. Methods We studied skin fibroblast cultures from patients homozygous for ACADS
common variant c.625G>A (n = 10), compound heterozygous
for c.625G>A/c.319C>T (n = 3) or homozygous for
pathogenic c.319C>T (n = 2) and c.1138C>T (n = 2)
mutations compared to fibroblasts from patients with carnitine palmitoyltransferase
2 (CPT2) (n = 5), mitochondrial trifunctional protein
(MTP)/long-chain L-3-hydroxyacyl-CoA dehydrogenase (LCHAD) (n = 7),
and medium-chain acyl-CoA dehydrogenase (MCAD) deficiencies (n = 4)
and normal controls (n = 9). All were exposed to 50 µM
menadione at 37°C. Additonal conditions included exposure to 39°C
and/or hypoglycemia. Time to 100% cell death was confirmed with trypan
blue dye exclusion. Experiments were repeated with antioxidants (Vitamins
C and E or N-acetylcysteine), Bezafibrate or glucose and temperature rescue. Results The most significant risk factor for vulnerability to menadione-induced
oxidative stress was the presence of a FAO defect. SCADD fibroblasts were
the most vulnerable compared to other FAO disorders and controls, and were
similarly affected, independent of genotype. Cell death was exacerbated by
hyperthermia and/or hypoglycemia. Hyperthermia was a more significant independent
risk factor than hypoglycemia. Rescue significantly prolonged survival. Incubation
with antioxidants and Bezafibrate significantly increased viability of SCADD
fibroblasts. Interpretation Vulnerability to oxidative stress likely contributes to neurotoxicity of
SCADD regardless of ACADS genotype and is significantly exacerbated
by hyperthermia. We recommend rigorous temperature control in SCADD patients
during acute illness. Antioxidants and Bezafibrate may also prove instrumental
in their management.
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Affiliation(s)
- Zarazuela Zolkipli
- Neurometabolic Research Laboratory, Division of Neurology, Department of Pediatrics, Hospital for Sick Children, Toronto, Canada
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Mels CM, Westhuizen FHVD, Pretorius PJ, Erasmus E. Unbalanced biotransformation metabolism and oxidative stress status: implications for deficient fatty acid oxidation. Health (London) 2011. [DOI: 10.4236/health.2011.31009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Cell survival and death are complex matters. Too much survival may lead to cancer and too much cell death may result in tissue degeneration. In this chapter, we will first of all focus on the cellular survival mechanisms that promote correct folding and maintenance of protein function. These mechanisms include protein quality control (PQC) systems comprising molecular chaperones and intracellular proteases in the cytosol, endoplasmatic reticulum (ER) and in the mitochondria. In addition to the PQC systems, mechanisms elicited by misfolded proteins, known as unfolded protein responses (UPRs), including induction/activation of antioxidant systems are also present in the three compartments of the cell. Second, we will discuss the mechanisms by which misfolded proteins lead to the generation of oxidative stress in the form of reactive oxygen species (ROS) and reactive nitrogen species (RNS). These species are produced mainly from superoxide (O2-) generated in the mitochondrial respiratory chain and from nitrogen oxide (NO) produced by the mitochondrial nitrogen oxide synthetase (mtNOS). Third, the effects of oxidative stress will be discussed, both with respect to mitochondrial dynamics, i.e., fission and fusion, and the related elimination of dysfunctional mitochondria by cellular cleaning systems, i.e., mitophagy or mitoptosis, and related to the generation and cellular effects of oxidatively modified proteins, which closes a vicious cycle of protein misfolding and oxidative stress.
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Relationship between proteome changes of Longissimus muscle and intramuscular fat content in finishing pigs fed conjugated linoleic acid. Br J Nutr 2010; 105:1-9. [DOI: 10.1017/s0007114510003181] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The present experiment was conducted to determine proteome changes in Longissimus muscle of finishing pigs fed conjugated linoleic acid (CLA), in association with alteration of intramuscular fat content. Previously, seventy-two Duroc × Landrace × Large White gilts (approximately 60 kg) had been fed maize–soyabean meal-based diets with 0, 12·5 and 25 g CLA/kg diet. The CLA contained 369·1 mg/g cis-9, trans-11 CLA, 374·6 mg/g trans-10, cis-12 CLA and 53·7 mg/g other isomers. Six pigs per treatment were slaughtered when they reached a body weight of approximately 100 kg. Data published from a previous experiment demonstrated that supplementation with 12·5 or 25 g CLA/kg diet increased intramuscular fat content (P < 0·05). The present study investigated the proteome changes in Longissimus muscle of control and pigs supplemented with 25 g CLA/kg diet. CLA significantly influenced the abundance of proteins related to energy metabolism, fatty acid oxidation and synthesis, amino acid metabolism, defence, transport and other miscellaneous processes (P < 0·05). The increase in intramuscular fat content was positively correlated with the increased abundance of carbonic anhydrase 3 and aspartate aminotransferase (P < 0·05). We suggest that the proteome changes in Longissimus muscle contributed to greater intramuscular lipid content in CLA-supplemented pigs.
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Schuck PF, Ferreira GDC, Tahara EB, Klamt F, Kowaltowski AJ, Wajner M. cis-4-decenoic acid provokes mitochondrial bioenergetic dysfunction in rat brain. Life Sci 2010; 87:139-46. [PMID: 20540954 DOI: 10.1016/j.lfs.2010.05.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 05/14/2010] [Accepted: 05/25/2010] [Indexed: 10/19/2022]
Abstract
AIMS In the present work we investigated the in vitro effect of cis-4-decenoic acid, the pathognomonic metabolite of medium-chain acyl-CoA dehydrogenase deficiency, on various parameters of bioenergetic homeostasis in rat brain mitochondria. MAIN METHODS Respiratory parameters determined by oxygen consumption were evaluated, as well as membrane potential, NAD(P)H content, swelling and cytochrome c release in mitochondrial preparations from rat brain, using glutamate plus malate or succinate as substrates. The activities of citric acid cycle enzymes were also assessed. KEY FINDINGS cis-4-decenoic acid markedly increased state 4 respiration, whereas state 3 respiration and the respiratory control ratio were decreased. The ADP/O ratio, the mitochondrial membrane potential, the matrix NAD(P)H levels and aconitase activity were also diminished by cis-4-decenoic acid. These data indicate that this fatty acid acts as an uncoupler of oxidative phosphorylation and as a metabolic inhibitor. cis-4-decenoic acid also provoked a marked mitochondrial swelling when either KCl or sucrose was used in the incubation medium and also induced cytochrome c release from mitochondria, suggesting a non-selective permeabilization of the inner mitochondrial membrane. SIGNIFICANCE It is therefore presumed that impairment of mitochondrial homeostasis provoked by cis-4-decenoic acid may be involved in the brain dysfunction observed in medium-chain acyl-CoA dehydrogenase deficient patients.
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Affiliation(s)
- Patrícia Fernanda Schuck
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Tonin AM, Grings M, Busanello ENB, Moura AP, Ferreira GC, Viegas CM, Fernandes CG, Schuck PF, Wajner M. Long-chain 3-hydroxy fatty acids accumulating in LCHAD and MTP deficiencies induce oxidative stress in rat brain. Neurochem Int 2010; 56:930-6. [PMID: 20381565 DOI: 10.1016/j.neuint.2010.03.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 03/23/2010] [Accepted: 03/29/2010] [Indexed: 01/07/2023]
Abstract
Accumulation of long-chain 3-hydroxy fatty acids is the biochemical hallmark of long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) and mitochondrial trifunctional protein (MTP) deficiencies. These disorders are clinically characterized by neurological symptoms, such as convulsions and lethargy, as well as by cardiomyopathy and muscle weakness. In the present work we investigated the in vitro effect of 3-hydroxydodecanoic (3HDA), 3-hydroxytetradecanoic (3HTA) and 3-hydroxypalmitic (3HPA) acids, which accumulate in these disorders, on important oxidative stress parameters in cerebral cortex of young rats in the hope to clarify the mechanisms leading to the brain damage found in patients affected by these disorders. It was first verified that these compounds significantly induced lipid peroxidation, as determined by increased thiobarbituric acid-reactive substances levels. In addition, carbonyl formation was significantly increased and sulfhydryl content decreased by 3HTA and 3HPA, which indicates that these fatty acids elicit protein oxidative damage. 3HTA and 3HPA also diminished the reduced glutathione (GSH) levels, without affecting nitrate and nitrite production. Finally, we observed that the addition of the antioxidants and free radical scavengers trolox and deferoxamine (DFO) was able to partially prevent lipid oxidative damage, whereas DFO fully prevented the reduction on GSH levels induced by 3HTA. Our present data showing that 3HDA, 3HTA and 3HPA elicit oxidative stress in rat brain indicate that oxidative damage may represent an important pathomechanism involved in the neurologic symptoms manifested by patients affected by LCHAD and MTP deficiencies.
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Affiliation(s)
- Anelise M Tonin
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Phenolic content of grapevine leaves (Vitis labrusca var. Bordo) and its neuroprotective effect against peroxide damage. Toxicol In Vitro 2010; 24:148-53. [DOI: 10.1016/j.tiv.2009.08.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2008] [Revised: 05/29/2009] [Accepted: 08/07/2009] [Indexed: 01/26/2023]
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Promotion of Lipid and Protein Oxidative Damage in Rat Brain by Ethylmalonic Acid. Neurochem Res 2009; 35:298-305. [DOI: 10.1007/s11064-009-0055-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Accepted: 08/21/2009] [Indexed: 01/26/2023]
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Schuck PF, Ferreira GDC, Tonin AM, Viegas CM, Busanello ENB, Moura AP, Zanatta A, Klamt F, Wajner M. Evidence that the major metabolites accumulating in medium-chain acyl-CoA dehydrogenase deficiency disturb mitochondrial energy homeostasis in rat brain. Brain Res 2009; 1296:117-26. [PMID: 19703432 DOI: 10.1016/j.brainres.2009.08.053] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 08/14/2009] [Accepted: 08/17/2009] [Indexed: 11/16/2022]
Abstract
Medium-chain acyl-CoA dehydrogenase deficiency (MCADD) is an inherited metabolic disorder of fatty acid oxidation in which the affected patients predominantly present high levels of octanoic (OA) and decanoic (DA) acids and their glycine and carnitine by-products in tissues and body fluids. It is clinically characterized by episodic encephalopathic crises with coma and seizures, as well as by progressive neurological involvement, whose pathophysiology is poorly known. In the present work, we investigated the in vitro effects of OA and DA on various parameters of energy homeostasis in mitochondrial preparations from brain of young rats. We found that OA and DA markedly increased state 4 respiration and diminished state 3 respiration as well as the respiratory control ratio, the mitochondrial membrane potential and the matrix NAD(P)H levels. In addition, DA-elicited increase in oxygen consumption in state 4 respiration was partially prevented by atractyloside, indicating the involvement of the adenine nucleotide translocator. OA and DA also reduced ADP/O ratio, CCCP-stimulated respiration and the activities of respiratory chain complexes. The data indicate that the major accumulating fatty acids in MCADD act as uncouplers of oxidative phosphorylation and as metabolic inhibitors. Furthermore, DA, but not OA, provoked a marked mitochondrial swelling and cytochrome c release from mitochondria, reflecting a permeabilization of the inner mitochondrial membrane. Taken together, these data suggest that OA and DA impair brain mitochondrial energy homeostasis that could underlie at least in part the neuropathology of MCADD.
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Affiliation(s)
- Patrícia Fernanda Schuck
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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