Journal
SEMINARS IN FETAL & NEONATAL MEDICINE
Volume 16, Issue 4, Pages 229-235Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.siny.2011.04.001
Keywords
Genetic diseases; Infant; Mitochondrial respiratory chain deficiency; Myopathies; Neonate
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During the last decade rapid development has occurred in defining nuclear gene mutations causing mitochondrial disease. Some of these newly defined gene mutations cause neonatal or early infantile onset of disease, often associated with severe progressive encephalomyopathy combined with other multi-organ involvement such as cardiomyopathy or hepatopathy and with early death. Findings suggesting myopathy in neonates are hypotonia, muscle weakness and wasting, and arthrogryposis. We aim to describe the clinical findings of patients with mitochondrial disease presenting with muscular manifestations in the neonatal period or in early infancy and in whom the genetic defect has been characterized. The majority of patients with neonatal onset of mitochondrial disease have mutations in nuclear genes causing dysfunction of the mitochondrial respiratory chain, leading to defective oxidative phosphorylation. (C) 2011 Elsevier Ltd. All rights reserved.
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