Enzimas mitocondriales distinguen SFC de otras enf. mitocond
Publicado: 20 Jun 2011, 01:30
[t]Mitochondrial enzymes discriminate between mitochondrial disorders and chronic fatigue syndrome[/t]
Bart Smits(a), Lambert van den Heuvel(b), Hans Knoop(c), Benno Küsters(a,d), Antoon Janssen(b), George Borm(e), Gijs Bleijenberg(c), Richard Rodenburg(b) and Baziel van Engelen(a)
(a) Neuromuscular Center Nijmegen, Department of Neurology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(b) Nijmegen Center for Mitochondrial Disorders and Department of Pediatrics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(c) Expert Center Chronic Fatigue, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(d) Department of Pathology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(e) Department of Epidemiology and Biostatistics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
Received 30 November 2010;
revised 18 May 2011;
accepted 25 May 2011.
Available online 2 June 2011.
Abstract
We studied the extent of mitochondrial involvement in chronic fatigue syndrome (CFS) and investigated whether measurement of mitochondrial respiratory chain complex (RCC) activities discriminates between CFS and mitochondrial disorders. Mitochondrial content was decreased in CFS compared to healthy controls, whereas RCC activities corrected for mitochondrial content were not. Conversely, mitochondrial content did not discriminate between CFS and two groups of mitochondrial disorders, whereas ATP production rate and complex I, III and IV activity did, all with higher activities in CFS. We conclude that the ATP production rate and RCC activities can reliably discriminate between mitochondrial disorders and CFS.
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Keywords: Chronic fatigue syndrome; Chronic progressive external ophthalmoplegia; Diagnostic test assessment; Mitochondrial medicine; Respiratory chain complexes
Abbreviations: A3243G, m.03243A → G mutation; AUC, area under the receiver operating characteristic curve; CFS, chronic fatigue syndrome; CS, citrate synthase; CPEO, chronic progressive external ophthalmoplegia; RCC, mitochondrial respiratory chain complex
Bart Smits(a), Lambert van den Heuvel(b), Hans Knoop(c), Benno Küsters(a,d), Antoon Janssen(b), George Borm(e), Gijs Bleijenberg(c), Richard Rodenburg(b) and Baziel van Engelen(a)
(a) Neuromuscular Center Nijmegen, Department of Neurology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(b) Nijmegen Center for Mitochondrial Disorders and Department of Pediatrics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(c) Expert Center Chronic Fatigue, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(d) Department of Pathology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
(e) Department of Epidemiology and Biostatistics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
Received 30 November 2010;
revised 18 May 2011;
accepted 25 May 2011.
Available online 2 June 2011.
Abstract
We studied the extent of mitochondrial involvement in chronic fatigue syndrome (CFS) and investigated whether measurement of mitochondrial respiratory chain complex (RCC) activities discriminates between CFS and mitochondrial disorders. Mitochondrial content was decreased in CFS compared to healthy controls, whereas RCC activities corrected for mitochondrial content were not. Conversely, mitochondrial content did not discriminate between CFS and two groups of mitochondrial disorders, whereas ATP production rate and complex I, III and IV activity did, all with higher activities in CFS. We conclude that the ATP production rate and RCC activities can reliably discriminate between mitochondrial disorders and CFS.
________________
Keywords: Chronic fatigue syndrome; Chronic progressive external ophthalmoplegia; Diagnostic test assessment; Mitochondrial medicine; Respiratory chain complexes
Abbreviations: A3243G, m.03243A → G mutation; AUC, area under the receiver operating characteristic curve; CFS, chronic fatigue syndrome; CS, citrate synthase; CPEO, chronic progressive external ophthalmoplegia; RCC, mitochondrial respiratory chain complex