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Pyruvate dehydrogenase deficiency (also known as pyruvate dehydrogenase complex deficiency or PDCD or PDH deficiency) is a rare neurodegenerative disorder associated with abnormal mitochondrial metabolism. PDCD is a genetic disease resulting from mutations in one of the components of the pyruvate dehydrogenase complex (PDC). [1]
Pyruvate dehydrogenase complex. Pyruvate dehydrogenase complex (PDC) is a complex of three enzymes that converts pyruvate into acetyl-CoA by a process called pyruvate decarboxylation. [1] Acetyl-CoA may then be used in the citric acid cycle to carry out cellular respiration, and this complex links the glycolysis metabolic pathway to the citric ...
Dihydrolipoyl transacetylase (or dihydrolipoamide acetyltransferase) is an enzyme component of the multienzyme pyruvate dehydrogenase complex. The pyruvate dehydrogenase complex is responsible for the pyruvate decarboxylation step that links glycolysis to the citric acid cycle. This involves the transformation of pyruvate from glycolysis into ...
Pyruvate dehydrogenase (PDH) deficiency is a congenital degenerative metabolic disease resulting from a mutation of the pyruvate dehydrogenase complex (PDC) located on the X chromosome. While defects have been identified in all 3 enzymes of the complex, the E1-α subunit is predominantly the culprit.
Leigh syndrome can also be caused by deficiency of the pyruvate dehydrogenase complex (PDHC), the x-linked gene being PDHA1. [9] In general, there are two major presentations of PDH deficiency, metabolic and neurologic, which occur at equal frequency. [15]
This enzyme complex catalyzes the oxidative decarboxylation of branched, short-chain alpha-ketoacids. BCKDC is a member of the mitochondrial α-ketoacid dehydrogenase complex family, which also includes pyruvate dehydrogenase and alpha-ketoglutarate dehydrogenase, key enzymes that function in the Krebs cycle.
Mutations in the PDHA2 gene have been known to cause one form of pyruvate dehydrogenase deficiency. Pyruvate dehydrogenase deficiency is characterized by the buildup of a chemical called lactic acid in the body and a variety of neurological problems. Signs and symptoms of this condition usually first appear shortly after birth, and they can ...
Pyruvate carboxylase deficiency types A, B, & C (Leigh necrotizing encephalopathy due to pyruvate carboxylase deficiency, Ataxia with lactic acidosis II) Lactic acidosis, hyperammonemia, hypoglycemia, hepatomegaly, neurological problems, hypotonia, reduced ketone synthesis, and demyelination of neurons. Some may respond to thiamine treatment
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