Abstract
Impaired nervous system function in childhood is encountered in 10 separate disorders of the peroxisome. Peroxisomal disorders are subdivided into three major groups. In group 1 there is failure to form the organelle and impairment of multiple peroxisomal functions. In group 3 peroxisome structure is intact and the defect involves a single enzyme. In group 2 (rhizomelic chondrodysplasia punctata) peroxisome structure is probably intact, but at least 2 peroxisomal enzymes fail to function normally. We present an overview of this newly recognized field which is so pertinent to brain development. In addition, we present recent and new data about the biochemical defect, genetics and therapy of X-linked adrenoleukodystrophy; about the normal metabolism of L-pipecolic acid in primates and its disturbance in the Zellweger syndrome, and about the prenatal diagnosis of peroxisomal disorders.
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