Cited by 264Mitochondrial Function and PathologyMetabolism and Genetic DisordersGenomics and Rare Diseases

Clinical and molecular findings in children with complex I deficiency

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Bugiani, M., Invernizzi, F., Alberio, S., Briem, E., Lamantea, E., Carrara, F., Moroni, I., Farina, L. +4 more·2004·Biochimica et Biophysica Acta (BBA) - Bioenergetics

Abstract

Isolated complex I deficiency, the most frequent OXPHOS disorder in infants and children, is genetically heterogeneous. Mutations have been found in seven mitochondrial DNA (mtDNA) and eight nuclear DNA encoded subunits, respectively, but in most of the cases the genetic basis of the biochemical defect is unknown. We analyzed the entire mtDNA and 11 nuclear encoded complex I subunits in 23 isolated complex I-deficient children, classified into five clinical groups: Leigh syndrome, progressive leukoencephalopathy, neonatal cardiomyopathy, severe infantile lactic acidosis, and a miscellaneous group of unspecified encephalomyopathies. A genetic definition was reached in eight patients (35%). Mutations in mtDNA were found in six out of eight children with Leigh syndrome, indicating a prevalent association between this phenotype and abnormalities in ND genes. In two patients with leukoencephalopathy, homozygous mutations were detected in two different nuclear-encoded complex I genes, including a novel transition in NDUFS1 subunit. In addition to these, a child affected by mitochondrial encephalomyopathy had heterozygous mutations in NDUFA8 and NDUFS2 genes, while another child with neonatal cardiomyopathy had a complex rearrangement in a single NDUFS7 allele. The latter cases suggest the possibility of unconventional patterns of inheritance in complex I defects.

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Crossref · 10.1016/j.bbabio.2004.09.006

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Authors
Bugiani, M., Invernizzi, F., Alberio, S., Briem, E., Lamantea, E., Carrara, F., Moroni, I., Farina, L., Spada, M., Donati, M. A., Uziel, G., & Zeviani, M.
Affiliations
  • Fondazione IRCCS Istituto Neurologico Carlo Besta (IT)
  • Ospedale Regina Margherita (IT)
  • Meyer Children's Hospital (IT)
Corresponding author
Zeviani, M.
Venue
Biochimica et Biophysica Acta (BBA) - Bioenergetics
Publisher
Elsevier BV
Published
2004-12
Volume
1659
Issue
2-3
Pages
136-147
ISSN
0005-2728 (ISSN-L)
OpenAlex
W2077446001
Cited by
264
References
44
Citations by year
2026: 5 · 2025: 6 · 2024: 10 · 2023: 7 · 2022: 8 · 2021: 13 · 2020: 15 · 2019: 12 · 2018: 14 · 2017: 15 · 2016: 16 · 2015: 15 · 2014: 15 · 2013: 17 · 2012: 17
FWCI
2.72
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Bioenergetics (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
Keywords
complex I deficiency, mitochondrial disease, Leigh syndrome, neonatal cardiomyopathy, mitochondrial encephalomyopathy, NDUFS1, NDUFS2, NDUFS7, mitochondrial DNA mutations, genetic heterogeneity, children
MeSH terms
Acidosis, Lactic, Child, DNA, Mitochondrial, Humans, Infant, Iron-Sulfur Proteins, Leigh Disease, Leukoencephalopathy, Progressive Multifocal, Metabolism, Inborn Errors, Mutation, Cardiomyopathies, NADH Dehydrogenase, Proteins, NAD(P)H Dehydrogenase (Quinone), Mitochondrial Proteins, Electron Transport Complex I

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