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Measurement of ATP production in mitochondrial disorders. 2006

R K Shepherd, and N Checcarelli, and A Naini, and D C De Vivo, and S DiMauro, and C M Sue
Department of Neurogenetics, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonard's, NSW, Australia.

Mitochondrial diseases are a heterogeneous group of disorders caused by mutations in both nuclear DNA (nDNA) and mitochondrial DNA (mtDNA). Mitochondrial disease leads to impaired respiratory chain function and reduced ATP production. The aim of this study was to compare disturbances in mitochondrial function by measuring ATP synthesis in fibroblasts derived from patients with nDNA and mtDNA defects. Skin fibroblasts derived from 22 patients with either nDNA-related disorders (n = 8) or mtDNA-related disorders (n = 14) were analysed. ATP synthesis was markedly decreased in fibroblasts derived from patients with nDNA-related disorders but only variably so in patients with mtDNA mutations. In fibroblasts with the MELAS 3243A > G mutation, ATP synthesis correlated with mutant load. We believe that the observed differences in ATP production between cell lines derived from patients with nDNA-related disorders and mtDNA-related disorders may help in the assessment of patients with undiagnosed mitochondrial disease. The clinical comparisons observed in patients with nDNA- and mtDNA-related disorders may be explained by differences in the disturbance of ATP synthesis measured in the two conditions.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D005260 Female Females
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000255 Adenosine Triphosphate An adenine nucleotide containing three phosphate groups esterified to the sugar moiety. In addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter. ATP,Adenosine Triphosphate, Calcium Salt,Adenosine Triphosphate, Chromium Salt,Adenosine Triphosphate, Magnesium Salt,Adenosine Triphosphate, Manganese Salt,Adenylpyrophosphate,CaATP,CrATP,Manganese Adenosine Triphosphate,MgATP,MnATP,ATP-MgCl2,Adenosine Triphosphate, Chromium Ammonium Salt,Adenosine Triphosphate, Magnesium Chloride,Atriphos,Chromium Adenosine Triphosphate,Cr(H2O)4 ATP,Magnesium Adenosine Triphosphate,Striadyne,ATP MgCl2

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