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Canosa, A., De Marco, G., Lomartire, A., Rinaudo, M. T., Di Cunto, F., Turco, E., . . . Chio, A. (2018). A novel p.Ser108LeufsTer15 SOD1 mutation leading to the formation of a premature stop codon in an apparently sporadic ALS patient: insights into the underlying pathomechanisms. Neurobiology of Aging, 72
Open this publication in new window or tab >>A novel p.Ser108LeufsTer15 SOD1 mutation leading to the formation of a premature stop codon in an apparently sporadic ALS patient: insights into the underlying pathomechanisms
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2018 (English)In: Neurobiology of Aging, ISSN 0197-4580, E-ISSN 1558-1497, Vol. 72Article in journal (Refereed) Published
Abstract [en]

We report an apparently sporadic amyotrophic lateral sclerosis patient carrying a heterozygous novel frameshift SOD1 mutation (p.Ser108LeufsTer15), predicted to cause a premature protein truncation. RTPCR analysis of SOD1 mRNA and SDS-PAGE/Western blot analysis of PBMC demonstrated that mRNA from the mutant allele is expressed at levels similar to those of the wild-type allele, but the truncated protein is undetectable also in the insoluble fraction and after proteasome inhibition. Accordingly, the dismutation activity in erythrocytes is halved. Thus, the pathogenic mechanism associated with this mutation might be based on an insufficient activity of SOD1 that would make motor neurons more vulnerable to oxidative injury. However, it cannot be excluded that p.Ser108LeufsTer15 SOD1 is present in the nervous tissue and, being less charged and hence having less repulsive forces than the wild-type protein, may trigger toxic mechanisms as a consequence of its propensity to aggregate. 

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Amyotrophic lateral sclerosis, SOD1, Truncated protein, Frameshift mutation, Oxidative stress, Protein aggregation
National Category
Neurosciences
Identifiers
urn:nbn:se:umu:diva-153540 (URN)10.1016/j.neurobiolaging.2018.08.014 (DOI)000449073700028 ()30236613 (PubMedID)
Available from: 2018-11-26 Created: 2018-11-26 Last updated: 2018-11-26Bibliographically approved
Paré, B., Lehmann, M., Beaudin, M., Nordström, U., Saikali, S., Julien, J.-P., . . . Gros-Louis, F. (2018). Misfolded SOD1 pathology in sporadic Amyotrophic Lateral Sclerosis. Scientific Reports, 8, Article ID 14223.
Open this publication in new window or tab >>Misfolded SOD1 pathology in sporadic Amyotrophic Lateral Sclerosis
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2018 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 8, article id 14223Article in journal (Refereed) Published
Abstract [en]

Aggregation of mutant superoxide dismutase 1 (SOD1) is a pathological hallmark of a subset of familial ALS patients. However, the possible role of misfolded wild type SOD1 in human ALS is highly debated. To ascertain whether or not misfolded SOD1 is a common pathological feature in non-SOD1 ALS, we performed a blinded histological and biochemical analysis of post mortem brain and spinal cord tissues from 19 sporadic ALS, compared with a SOD1 A4V patient as well as Alzheimer's disease (AD) and non-neurological controls. Multiple conformation-or misfolded-specific antibodies for human SOD1 were compared. These were generated independently by different research groups and were compared using standardized conditions. Five different misSOD1 staining patterns were found consistently in tissue sections from SALS cases and the SOD1 A4V patient, but were essentially absent in AD and non-neurological controls. We have established clear experimental protocols and provide specific guidelines for working, with conformational/misfolded SOD1-specific antibodies. Adherence to these guidelines will aid in the comparison of the results of future studies and better interpretation of staining patterns. This blinded, standardized and unbiased approach provides further support for a possible pathological role of misSOD1 in SALS.

Place, publisher, year, edition, pages
Nature Publishing Group, 2018
National Category
Neurosciences Other Clinical Medicine
Identifiers
urn:nbn:se:umu:diva-152398 (URN)10.1038/s41598-018-31773-z (DOI)000445276500004 ()30242181 (PubMedID)
Funder
Swedish Research CouncilKnut and Alice Wallenberg FoundationRagnar Söderbergs stiftelseTorsten Söderbergs stiftelseThe Swedish Brain FoundationVästerbotten County CouncilThe Kempe Foundations
Available from: 2018-10-05 Created: 2018-10-05 Last updated: 2018-10-05Bibliographically approved
Ekhtiari Bidhendi, E., Bergh, J., Zetterström, P., Forsberg, K., Pakkenberg, B., Andersen, P. M., . . . Brännström, T. (2018). Mutant superoxide dismutase aggregates from human spinal cord transmit amyotrophic lateral sclerosis. Acta Neuropathologica, 136(6), 939-953
Open this publication in new window or tab >>Mutant superoxide dismutase aggregates from human spinal cord transmit amyotrophic lateral sclerosis
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2018 (English)In: Acta Neuropathologica, ISSN 0001-6322, E-ISSN 1432-0533, Vol. 136, no 6, p. 939-953Article in journal (Other academic) Published
Abstract [en]

Motor neurons containing aggregates of superoxide dismutase 1 (SOD1) are hallmarks of amyotrophic lateral sclerosis (ALS) caused by mutations in the gene encoding SOD1. We have previously reported that two strains of mutant human (h) SOD1 aggregates (denoted A and B) can arise in hSOD1-transgenic models for ALS and that inoculation of such aggregates into the lumbar spinal cord of mice results in rostrally spreading, templated hSOD1 aggregation and premature fatal ALS-like disease. Here, we explored whether mutant hSOD1 aggregates with prion-like properties also exist in human ALS. Aggregate seeds were prepared from spinal cords from an ALS patient carrying the hSOD1G127Gfs*7 truncation mutation and from mice transgenic for the same mutation. To separate from mono-, di- or any oligomeric hSOD1 species, the seed preparation protocol included ultracentrifugation through a density cushion. The core structure of hSOD1G127Gfs*7 aggregates present in mice was strain A-like. Inoculation of the patient- or mouse-derived seeds into lumbar spinal cord of adult hSOD1-expressing mice induced strain A aggregation propagating along the neuraxis and premature fatal ALS-like disease (p < 0.0001). Inoculation of human or murine control seeds had no effect. The potencies of the ALS patient-derived seed preparations were high and disease was initiated in the transgenic mice by levels of hSOD1G127Gfs*7 aggregates much lower than those found in the motor system of patients carrying the mutation. The results suggest that prion-like growth and spread of hSOD1 aggregation could be the primary pathogenic mechanism, not only in hSOD1 transgenic rodent models, but also in human ALS.

Place, publisher, year, edition, pages
Springer, 2018
Keywords
Superoxide dismutase, prion-like, aggregation, propagation, motor neuron disease
National Category
Neurosciences
Research subject
Neurology; Pathology
Identifiers
urn:nbn:se:umu:diva-150909 (URN)10.1007/s00401-018-1915-y (DOI)000451952700008 ()30284034 (PubMedID)
Funder
Knut and Alice Wallenberg FoundationTorsten Söderbergs stiftelseThe Swedish Brain FoundationThe Kempe FoundationsVästerbotten County Council
Note

Originally included in thesis in manuscript form.

Available from: 2018-08-18 Created: 2018-08-18 Last updated: 2019-01-04Bibliographically approved
Keskin, I., Birve, A., Berdynski, M., Hjertkvist, K., Rofougaran, R., Nilsson, T. K., . . . Andersen, P. M. (2017). Comprehensive analysis to explain reduced or increased SOD1 enzymatic activity in ALS patients and their relatives. Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, 18(5-6), 457-463
Open this publication in new window or tab >>Comprehensive analysis to explain reduced or increased SOD1 enzymatic activity in ALS patients and their relatives
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2017 (English)In: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, ISSN 2167-8421, E-ISSN 2167-9223, Vol. 18, no 5-6, p. 457-463Article in journal (Refereed) Published
Abstract [en]

Objective: To characterise stabilities in erythrocytes of mutant SOD1 proteins, compare SOD1 enzymatic activities between patients with different genetic causes of ALS and search for underlying causes of deviant SOD1 activities in individuals lacking SOD1 mutations.Methods: Blood samples from 4072 individuals, ALS patients with or without a SOD1 mutation, family members and controls were studied. Erythrocyte SOD1 enzymatic activities normalised to haemoglobin content were determined, and effects of haemoglobin disorders on dismutation assessed. Coding SOD1 sequences were analysed by Sanger sequencing, exon copy number variations by fragment length analysis and by TaqMan Assay.Results: Of the 44 SOD1 mutations found, 75% caused severe destabilisation of the mutant protein but in 25% it was physically stable. Mutations producing structural changes caused halved erythrocyte SOD1 activities. There were no differences in SOD1 activities between patients without a SOD1 mutation and control individuals or carriers of TBK1 mutations and C9orf72(HRE). In the low and high SOD1 activity groups no deviations were found in exon copy numbers and intron gross structures. Thalassemias and iron deficiency were associated with increased SOD1 activity/haemoglobin ratios.Conclusion: Adjunct erythrocyte SOD1 activity analysis reliably signals destabilising SOD1 mutations including intronic mutations that are missed by exon sequencing.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD, 2017
Keywords
Amyotrophic lateral sclerosis, superoxide dismutase, mutation, enzymatic activity
National Category
Clinical Medicine
Identifiers
urn:nbn:se:umu:diva-138241 (URN)10.1080/21678421.2017.1301481 (DOI)000405584600019 ()
Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2018-06-09Bibliographically approved
Lange, D. J., Shahbazi, M., Silani, V., Ludolph, A. C., Weishaupt, J. H., Ajroud-Driss, S., . . . Andersen, P. M. (2017). Pyrimethamine Significantly Lowers Cerebrospinal Fluid Cu/Zn Superoxide Dismutase in Amyotrophic Lateral Sclerosis Patients with SOD1 Mutations. Annals of Neurology, 81(6), 837-848
Open this publication in new window or tab >>Pyrimethamine Significantly Lowers Cerebrospinal Fluid Cu/Zn Superoxide Dismutase in Amyotrophic Lateral Sclerosis Patients with SOD1 Mutations
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2017 (English)In: Annals of Neurology, ISSN 0364-5134, E-ISSN 1531-8249, Vol. 81, no 6, p. 837-848Article in journal (Refereed) Published
Abstract [en]

Objective: Cu/Zn superoxide dismutase (SOD1) reduction prolongs survival in SOD1-transgenic animal models. Pyrimethamine produces dose-dependent SOD1 reduction in cell culture systems. A previous phase 1 trial showed pyrimethamine lowers SOD1 levels in leukocytes in patients with SOD1 mutations. This study investigated whether pyrimethamine lowered SOD1 levels in the cerebrospinal fluid (CSF) in patients carrying SOD1 mutations linked to familial amyotrophic lateral sclerosis (fALS/SOD1). Methods: A multicenter (5 sites), open-label, 9-month-duration, dose-ranging study was undertaken to determine the safety and efficacy of pyrimethamine to lower SOD1 levels in the CSF in fALS/SOD1. All participants underwent 3 lumbar punctures, blood draw, clinical assessment of strength, motor function, quality of life, and adverse effect assessments. SOD1 levels were measured in erythrocytes and CSF. Pyrimethamine was measured in plasma and CSF. Appel ALS score, ALS Functional Rating Scale-Revised, and McGill Quality of Life Single-Item Scale were measured at screening, visit 6, and visit 9. Results: We enrolled 32 patients; 24 completed 6 visits (18 weeks), and 21 completed all study visits. A linear mixed effects model showed a significant reduction in CSF SOD1 at visit 6 (p<0.001) with a mean reduction of 13.5% (95% confidence interval [CI] 58.4-18.5) and at visit 9 (p<0.001) with a mean reduction of 10.5% (95% CI55.2-15.8). Interpretation: Pyrimethamine is safe and well tolerated in ALS. Pyrimethamine is capable of producing a significant reduction in total CSF SOD1 protein content in patients with ALS caused by different SOD1 mutations. Further long-term studies are warranted to assess clinical efficacy.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017
National Category
Neurosciences
Identifiers
urn:nbn:se:umu:diva-137645 (URN)10.1002/ana.24950 (DOI)000403795200009 ()28480639 (PubMedID)
Available from: 2017-07-18 Created: 2017-07-18 Last updated: 2018-06-09Bibliographically approved
Ingre, C., Wuolikainen, A., Marklund, S. L., Birve, A., Press, R. & Andersen, P. M. (2016). A 50bp deletion in the SOD1 promoter lowers enzyme expression but is not associated with ALS in Sweden. Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, 17(5-6), 452-457
Open this publication in new window or tab >>A 50bp deletion in the SOD1 promoter lowers enzyme expression but is not associated with ALS in Sweden
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2016 (English)In: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, ISSN 2167-8421, E-ISSN 2167-9223, Vol. 17, no 5-6, p. 452-457Article in journal (Refereed) Published
Abstract [en]

Mutations in the superoxide dismutase (SOD1) gene have been linked to amyotrophic lateral sclerosis (ALS). A 50 base pair (bp) deletion of SOD1 has been suggested to reduce transcription and to be associated with later disease onset in ALS. This study was aimed to reveal if the 50bp deletion influenced SOD1 enzymatic activity, occurrence and phenotype of the disease in a Swedish ALS/control cohort. Blood samples from 512 Swedish ALS patients and 354 Swedish controls without coding SOD1 mutations were analysed for the 50bp deletion allele. The enzymatic activity of SOD1 in erythrocytes was analysed and genotype-phenotype correlations were assessed. Results demonstrated that the genotype frequencies of the 50bp deletion were all found to be in Hardy-Weinberg equilibrium. No significant differences were found for age of onset, disease duration or site of onset. SOD1 enzymatic activity showed a statistically significant decreasing trend in the control group, in which the allele was associated with a 5% reduction in SOD1 activity. The results suggest that the 50bp deletion has a moderate reducing effect on SOD1 synthesis. No modulating effects, however, were found on ALS onset, phenotype and survival in the Swedish population.

Keywords
ALS, SOD1, promoter, deletion, age of onset, disease duration
National Category
Rheumatology and Autoimmunity
Identifiers
urn:nbn:se:umu:diva-127984 (URN)10.3109/21678421.2016.1159223 (DOI)000381024500019 ()27002425 (PubMedID)
Available from: 2016-12-05 Created: 2016-11-21 Last updated: 2018-06-09Bibliographically approved
Keskin, I., Forsgren, E., Lange, D. J., Weber, M., Birve, A., Synofzik, M., . . . Marklund, S. L. (2016). Effects of Cellular Pathway Disturbances on Misfolded Superoxide Dismutase-1 in Fibroblasts Derived from ALS Patients. PLoS ONE, 11(2), Article ID e0150133.
Open this publication in new window or tab >>Effects of Cellular Pathway Disturbances on Misfolded Superoxide Dismutase-1 in Fibroblasts Derived from ALS Patients
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2016 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 11, no 2, article id e0150133Article in journal (Refereed) Published
Abstract [en]

Mutations in superoxide dismutase-1 (SOD1) are a common known cause of amyotrophic lateral sclerosis (ALS). The neurotoxicity of mutant SOD1s is most likely caused by misfolded molecular species, but disease pathogenesis is still not understood. Proposed mechanisms include impaired mitochondrial function, induction of endoplasmic reticulum stress, reduction in the activities of the proteasome and autophagy, and the formation of neurotoxic aggregates. Here we examined whether perturbations in these cellular pathways in turn influence levels of misfolded SOD1 species, potentially amplifying neurotoxicity. For the study we used fibroblasts, which express SOD1 at physiological levels under regulation of the native promoter. The cells were derived from ALS patients expressing 9 different SOD1 mutants of widely variable molecular characteristics, as well as from patients carrying the GGGGCC-repeat-expansion in C9orf72 and from non-disease controls. A specific ELISA was used to quantify soluble, misfolded SOD1, and aggregated SOD1 was analysed by western blotting. Misfolded SOD1 was detected in all lines. Levels were found to be much lower in non-disease control and the non-SOD1 C9orf72 ALS lines. This enabled us to validate patient fibroblasts for use in subsequent perturbation studies. Mitochondrial inhibition, endoplasmic reticulum stress or autophagy inhibition did not affect soluble misfolded SOD1 and in most cases, detergent-resistant SOD1 aggregates were not detected. However, proteasome inhibition led to uniformly large increases in misfolded SOD1 levels in all cell lines and an increase in SOD1 aggregation in some. Thus the ubiquitin-proteasome pathway is a principal determinant of misfolded SOD1 levels in cells derived both from patients and controls and a decline in activity with aging could be one of the factors behind the mid-to late-life onset of inherited ALS.

Keywords
Superoxides, Amyotrophic Lateral Sclerosis
National Category
Neurosciences
Identifiers
urn:nbn:se:umu:diva-118791 (URN)10.1371/journal.pone.0150133 (DOI)000371274400090 ()26919046 (PubMedID)
Available from: 2016-04-08 Created: 2016-04-04 Last updated: 2018-06-07Bibliographically approved
Tokuda, E., Brännström, T., Andersen, P. M. & Marklund, S. L. (2016). Low autophagy capacity implicated in motor system vulnerability to mutant superoxide dismutase. Acta neuropathologica communications, 4, Article ID 6.
Open this publication in new window or tab >>Low autophagy capacity implicated in motor system vulnerability to mutant superoxide dismutase
2016 (English)In: Acta neuropathologica communications, E-ISSN 2051-5960, Vol. 4, article id 6Article in journal (Refereed) Published
Abstract [en]

Introduction: The motor system is selectively vulnerable to mutations in the ubiquitously expressed aggregation-prone enzyme superoxide dismutase-1 (SOD1).

Results: Autophagy clears aggregates, and factors involved in the process were analyzed in multiple areas of the CNS from human control subjects (n = 10) and amyotrophic lateral sclerosis (ALS) patients (n = 18) with or without SOD1 mutations. In control subjects, the key regulatory protein Beclin 1 and downstream factors were remarkably scarce in spinal motor areas. In ALS patients, there was evidence of moderate autophagy activation and also dysregulation. These changes were largest in SOD1 mutation carriers. To explore consequences of low autophagy capacity, effects of a heterozygous deletion of Beclin 1 were examined in ALS mouse models expressing mutant SOD1s. This caused earlier SOD1 aggregation, onset of symptoms, motor neuron loss, and a markedly shortened survival. In contrast, the levels of soluble misfolded SOD1 species were reduced.

Conclusions: The findings suggest that an inherent low autophagy capacity might cause the vulnerability of the motor system, and that SOD1 aggregation plays a crucial role in the pathogenesis.

Keywords
Amyotrophic lateral sclerosis, Autophagy, Motor system vulnerability, Protein aggregates, Superoxide sumutase-1
National Category
Neurosciences
Identifiers
urn:nbn:se:umu:diva-116740 (URN)10.1186/s40478-016-0274-y (DOI)000368653000001 ()26810478 (PubMedID)
Available from: 2016-02-19 Created: 2016-02-11 Last updated: 2018-06-07Bibliographically approved
Wuolikainen, A., Jonsson, P., Ahnlund, M., Antti, H., Marklund, S. L., Moritz, T., . . . Trupp, M. (2016). Multi-platform mass spectrometry analysis of the CSF and plasma metabolomes of rigorously matched amyotrophic lateral sclerosis, Parkinson's disease and control subjects. Molecular Biosystems, 12(4), 1287-1298
Open this publication in new window or tab >>Multi-platform mass spectrometry analysis of the CSF and plasma metabolomes of rigorously matched amyotrophic lateral sclerosis, Parkinson's disease and control subjects
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2016 (English)In: Molecular Biosystems, ISSN 1742-206X, E-ISSN 1742-2051, Vol. 12, no 4, p. 1287-1298Article in journal (Refereed) Published
Abstract [en]

Amyotrophic lateral sclerosis (ALS) and Parkinson's disease (PD) are protein-aggregation diseases that lack clear molecular etiologies. Biomarkers could aid in diagnosis, prognosis, planning of care, drug target identification and stratification of patients into clinical trials. We sought to characterize shared and unique metabolite perturbations between ALS and PD and matched controls selected from patients with other diagnoses, including differential diagnoses to ALS or PD that visited our clinic for a lumbar puncture. Cerebrospinal fluid (CSF) and plasma from rigorously age-, sex- and sampling-date matched patients were analyzed on multiple platforms using gas chromatography (GC) and liquid chromatography (LC)-mass spectrometry (MS). We applied constrained randomization of run orders and orthogonal partial least squares projection to latent structure-effect projections (OPLS-EP) to capitalize upon the study design. The combined platforms identified 144 CSF and 196 plasma metabolites with diverse molecular properties. Creatine was found to be increased and creatinine decreased in CSF of ALS patients compared to matched controls. Glucose was increased in CSF of ALS patients and alpha-hydroxybutyrate was increased in CSF and plasma of ALS patients compared to matched controls. Leucine, isoleucine and ketoleucine were increased in CSF of both ALS and PD. Together, these studies, in conjunction with earlier studies, suggest alterations in energy utilization pathways and have identified and further validated perturbed metabolites to be used in panels of biomarkers for the diagnosis of ALS and PD.

National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
urn:nbn:se:umu:diva-119312 (URN)10.1039/c5mb00711a (DOI)000372612600023 ()26883206 (PubMedID)
Available from: 2016-04-17 Created: 2016-04-15 Last updated: 2018-06-07Bibliographically approved
Wu, J., Wuolikainen, A., Trupp, M., Jonsson, P., Marklund, S. L., Andersen, P. M., . . . Öhman, A. (2016). NMR analysis of the CSF and plasma metabolome of rigorously matched amyotrophic lateral sclerosis, Parkinson's disease and control subjects. Metabolomics, 12(6), Article ID 101.
Open this publication in new window or tab >>NMR analysis of the CSF and plasma metabolome of rigorously matched amyotrophic lateral sclerosis, Parkinson's disease and control subjects
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2016 (English)In: Metabolomics, ISSN 1573-3882, E-ISSN 1573-3890, Vol. 12, no 6, article id 101Article in journal (Refereed) Published
Abstract [en]

Introduction: Amyotrophic lateral sclerosis (ALS) and Parkinson’s disease (PD) are two severe neurodegenerative disorders for which the disease mechanisms are poorly understood and reliable biomarkers are absent.

Objectives: To identify metabolite biomarkers for ALS and PD, and to gain insights into which metabolic pathways are involved in disease.

Methods: Nuclear magnetic resonance (NMR) metabolomics was utilized to characterize the metabolite profiles of cerebrospinal fluid (CSF) and plasma from individuals in three age, gender, and sampling-date matched groups, comprising 22 ALS, 22 PD and 28 control subjects.

Results: Multivariate analysis of NMR data generated robust discriminatory models for separation of ALS from control subjects. ALS patients showed increased concentrations of several metabolites in both CSF and plasma, these are alanine (CSF fold change = 1.22, p = 0.005), creatine (CSF-fc = 1.17, p = 0.001), glucose (CSF-fc = 1.11, p = 0.036), isoleucine (CSF-fc = 1.24, p = 0.002), and valine (CSF-fc = 1.17, p = 0.014). Additional metabolites in CSF (creatinine, dimethylamine and lactic acid) and plasma (acetic acid, glutamic acid, histidine, leucine, pyruvate and tyrosine) were also important for this discrimination. Similarly, panels of CSF-metabolites that discriminate PD from ALS and control subjects were identified.

Conclusions: The results for the ALS patients suggest an affected creatine/creatinine pathway and an altered branched chain amino acid (BCAA) metabolism, and suggest links to glucose and energy metabolism. Putative metabolic markers specific for ALS (e.g. creatinine and lactic acid) and PD (e.g. 3-hydroxyisovaleric acid and mannose) were identified, while several (e.g. creatine and BCAAs) were shared between ALS and PD, suggesting some overlap in metabolic alterations in these disorders.

Keywords
Amyotrophic lateral sclerosis (ALS), Parkinson's disease (PD), NMR metabolomics, Biomarker, rebrospinal fluid (CSF), Plasma
National Category
Neurosciences
Identifiers
urn:nbn:se:umu:diva-124194 (URN)10.1007/s11306-016-1041-6 (DOI)000378752900006 ()
Available from: 2016-08-04 Created: 2016-07-28 Last updated: 2018-06-07Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-3270-2854

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