pyruvate dehydrogenase complex deficiency disease/asthenia

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Intermittent peripheral weakness as the presenting feature of pyruvate dehydrogenase deficiency.

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Two unrelated children presenting with episodic isolated peripheral weakness were found to have pyruvate dehydrogenase (PDH) deficiency (OMIM 312170) due to previously undescribed mutations (Pro250Thr, Arg88Cys) in the gene for the E1alpha subunit (PDHA1). Taken in context with the literature, these

Recurrent muscle weakness and ataxia in thiamine-responsive pyruvate dehydrogenase complex deficiency.

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Episodic weakness in pyruvate decarboxylase deficiency.

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Pyruvate Dehydrogenase Complex Deficiency: An Unusual Cause of Recurrent Lactic Acidosis in a Paediatric Critical Care Unit.

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Pyruvate dehydrogenase complex deficiency (PDCD) is a rare neurodegenerative disorder associated with abnormal mitochondrial metabolism. Structural brain abnormalities are common in PDCD. A case of a patient with PDCD with an unusual presentation is described. A 20-month-old boy with hypotonia and

Pyruvate dehydrogenase deficiency presenting as intermittent isolated acute ataxia.

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OBJECTIVE The aim of this study is to report and emphasize unusual presentations of pyruvate dehydrogenase (PDH) deficiency (OMIM 312170). METHODS PDH activity and PDHA1 gene were studied in two siblings presenting with intermittent ataxia in childhood. Similar presentations in reported

Pyruvate dehydrogenase-E1α deficiency presenting as recurrent acute proximal muscle weakness of upper and lower extremities in an 8-year-old boy.

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The mitochondrial pyruvate dehydrogenase enzyme complex (PDHC) plays an important role in aerobic energy metabolism and acid-base equilibrium. PDHC contains of 5 enzymes, 3 catalytic (E1, E2, E3) and 2 regulatory, as well as 3 cofactors and an additional protein (E3-binding protein) encoded by

E1 pyruvate dehydrogenase deficiency in a child with motor neuropathy.

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We report the case of a boy who developed a motor neuropathy during infectious episodes at 18 mo and 3 y of age. When he was 7 y old, he suffered persistent weakness and areflexia; his resting lactate and pyruvate values were 3.65 mM and 398 microM, respectively (controls: 1.1 +/- 0.3 mM and 90 +/-

[Analysis of a female neonate with pyruvate dehydrogenase complex deficiency].

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OBJECTIVE To analyze the clinical features and genetic basis of a female neonate with muscle weakness, abnormal brain magnetic resonance imaging and elevated blood lactate. METHODS The patient was subjected to clinical and laboratory examination. Next generation sequencing was carried out for the

[Clinical features of pyruvate dehydrogenase complex deficiency and gene testing in one case].

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OBJECTIVE To analyze the clinical characteristics and genetype of one children who had been diagnosed with pyruvate dehydrogenase complex deficiency. METHODS Comprehensive analyses of this case were performed, including clinical symptoms, signs, biochemical examinations and therapeutic effects. The

A family with pyruvate dehydrogenase complex deficiency due to a novel C>T substitution at nucleotide position 407 in exon 4 of the X-linked Epsilon1alpha gene.

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The pyruvate dehydrogenase complex (PDHc; McKusick 312170), localised in the mitochondrial matrix, is a multienzyme complex which converts pyruvate to acetyl-CoA. A deficiency of PDHc leads to inadequate removal of pyruvate and lactate resulting in lactic acidaemia and insufficient energy

Central hypoventilation syndrome in pyruvate dehydrogenase complex deficiency.

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The presentation and treatment of a central hypoventilation syndrome in a boy with pyruvate dehydrogenase complex (PDHC) deficiency are reported. Dephosphorylated PDHC was assayed in disrupted fibroblasts after pretreatment with dichloroacetate, a pyruvate dehydrogenase kinase inhibitor. Maximal

Bi-allelic mutations of LONP1 encoding the mitochondrial LonP1 protease cause pyruvate dehydrogenase deficiency and profound neurodegeneration with progressive cerebellar atrophy.

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LonP1 is crucial for maintaining mitochondrial proteostasis and mitigating cell stress. We identified a novel homozygous missense LONP1 variant, c.2282 C > T, (p.Pro761Leu), by whole-exome and Sanger sequencing in two siblings born to healthy consanguineous parents. Both siblings presented with

Ketonic diet in the management of pyruvate dehydrogenase deficiency.

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Two brothers, aged 11 years 6 months and 2 years 3 months, with psychomotor and growth retardation, episodes of weakness, ataxia, ophthalmoplegia, and elevated levels of blood pyruvate were shown to have a deficiency in the pyruvate dehydrogenase complex (PDH). When they ate a diet high enough in

[Lactic acid acidosis with mitochondrial myopathy due to a pyruvate dehydrogenase deficiency].

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We report on a patient, now 17 year old, in whom lactic acidosis was detected at the age of 7 while attempting to diagnose the causes of increasing weakness. The laboratory examinations revealed elevated pyruvate, alanine and oxaloacetate levels in serum and also a lowered citrate level. This led us

[Diagnostic significance of muscle biopsies in metabolic myopathies. II. Clinical biochemistry].

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In the diagnosis of metabolic myopathies the use of biochemical methods, in addition to morphological examination of muscle biopsies, is often necessary in order to identify a specific metabolic defect. In order to narrow down the spectrum of biochemical methods, extensive clinical investigation and

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