Document Detail


Disease-related changes in the cerebrospinal fluid metabolome in amyotrophic lateral sclerosis detected by GC/TOFMS.
MedLine Citation:
PMID:  21483737     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND/AIM: The changes in the cerebrospinal fluid (CSF) metabolome associated with the fatal neurodegenerative disease amyotrophic lateral sclerosis (ALS) are poorly understood and earlier smaller studies have shown conflicting results. The metabolomic methodology is suitable for screening large cohorts of samples. Global metabolomics can be used for detecting changes of metabolite concentrations in samples of fluids such as CSF.
METHODOLOGY: Using gas chromatography coupled to mass spectrometry (GC/TOFMS) and multivariate statistical modeling, we simultaneously studied the metabolome signature of ∼120 small metabolites in the CSF of patients with ALS, stratified according to hereditary disposition and clinical subtypes of ALS in relation to controls.
PRINCIPAL FINDINGS: The study is the first to report data validated over two sub-sets of ALS vs. control patients for a large set of metabolites analyzed by GC/TOFMS. We find that patients with sporadic amyotrophic lateral sclerosis (SALS) have a heterogeneous metabolite signature in the cerebrospinal fluid, in some patients being almost identical to controls. However, familial amyotrophic lateral sclerosis (FALS) without superoxide dismutase-1 gene (SOD1) mutation is less heterogeneous than SALS. The metabolome of the cerebrospinal fluid of 17 ALS patients with a SOD1 gene mutation was found to form a separate homogeneous group. Analysis of metabolites revealed that glutamate and glutamine were reduced, in particular in patients with a familial predisposition. There are significant differences in the metabolite profile and composition among patients with FALS, SALS and patients carrying a mutation in the SOD1 gene suggesting that the neurodegenerative process in different subtypes of ALS may be partially dissimilar.
CONCLUSIONS/SIGNIFICANCE: Patients with a genetic predisposition to amyotrophic lateral sclerosis have a more distinct and homogeneous signature than patients with a sporadic disease.
Authors:
Anna Wuolikainen; Thomas Moritz; Stefan L Marklund; Henrik Antti; Peter Munch Andersen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-04-04
Journal Detail:
Title:  PloS one     Volume:  6     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2011  
Date Detail:
Created Date:  2011-04-12     Completed Date:  2011-07-20     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e17947     Citation Subset:  IM    
Affiliation:
Institute of Pharmacology and Clinical Neuroscience, Umeå University, Umeå, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Amyotrophic Lateral Sclerosis / cerebrospinal fluid*,  enzymology,  genetics,  metabolism*
Case-Control Studies
Female
Gas Chromatography-Mass Spectrometry / methods*
Genotype
Humans
Male
Metabolome*
Metabolomics / methods*
Mutation
Superoxide Dismutase / genetics
Chemical
Reg. No./Substance:
EC 1.15.1.-/superoxide dismutase 1; EC 1.15.1.1/Superoxide Dismutase
Comments/Corrections

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