Abstract
Owing to the role of pyruvate and the tricarboxylic acid (TCA) cycle in energy metabolism, as well as in gluconeogenesis, lipogenesis and amino acid synthesis, defects in pyruvate metabolism and in the TCA cycle almost invariably affect the central nervous system. The severity and the different clinical phenotypes vary widely among patients and are not always specific, the range of manifestations extending from overwhelming neonatal lactic acidosis and early death to relatively normal adult life and variable effects on systemic functions. The same clinical manifestations may be caused by other defects of energy metabolism, especially defects of the respiratory chain (► Chapter 15). Diagnosis depends primarily on biochemical analyses of metabolites in body fluids, followed by definitive enzymatic assays in cells or tissues, and DNA analysis.
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De Meirleir, L.J., Brivet, M., Garcia-Cazorla, A. (2012). Disorders of Pyruvate Metabolism and the Tricarboxylic Acid Cycle. In: Saudubray, JM., van den Berghe, G., Walter, J.H. (eds) Inborn Metabolic Diseases. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15720-2_12
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