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Disorders of Organic Acid and Amino Acid Metabolism

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Textbook of Clinical Pediatrics

A large number of pediatric disorders occur as a result of inborn errors occurring in the metabolic pathways of amino acids or organic acids. These diseases are common pediatric problems with dramatic clinical presentations. Their initial clinical presentations differ according to age. A convenient manner of classification is as follows:

  1. 1.

    Diseases of neonatal onset. The first clinical symptoms appear soon after birth or within the first few weeks of life. Such diseases are always associated with central nervous system (CNS) symptoms. Occasionally an infant will be born with an encephalopathic picture and stupor, with profoundly disturbed neurologic function at birth. More often, an infant normal at birth will soon develop lethargy, progressing rapidly into coma in association with other severe neurologic signs. The disease will cause neurologic handicaps and death if intervention is not prompt. These diseases are therefore called “devastating metabolic diseases of the newborn.” In...

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Acknowledgments

Excellent and detailed reviews of the diseases discussed in this chapter can be found in The Metabolic and Molecular Bases of Inherited Disease edited by C. R. Scriver, A. L. Beaudet, W. S. Sly, and D. Valle (New York, McGraw-Hill, 7th edition 1995). Suggested reading material for important aspects of each disease presented is listed in the sections below.

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Ozand, P.T., Al-Essa, M. (2012). Disorders of Organic Acid and Amino Acid Metabolism. In: Elzouki, A.Y., Harfi, H.A., Nazer, H.M., Stapleton, F.B., Oh, W., Whitley, R.J. (eds) Textbook of Clinical Pediatrics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02202-9_38

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