Cited by 137Metabolism and Genetic DisordersMitochondrial Function and PathologyBiochemical Acid Research Studies

Inborn errors of the Krebs cycle: a group of unusual mitochondrial diseases in human

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Rustin, P, Bourgeron, T, Parfait, B, Chretien, D, Munnich, A, Rötig, A·1997·Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease

Abstract

Krebs cycle disorders constitute a group of rare human diseases which present an amazing complexity considering our current knowledge on the Krebs cycle function and biogenesis. Acting as a turntable of cell metabolism, it is ubiquitously distributed in the organism and its enzyme components encoded by supposedly typical house-keeping genes. However, the investigation of patients presenting specific defects of Krebs cycle enzymes, resulting from deleterious mutations of the considered genes, leads to reconsider this simple envision by revealing organ-specific impairments, mostly affecting neuromuscular system. This often leaves aside organs the metabolism of which strongly depends on mitochondrial energy metabolism as well, such as heart, kidney or liver. Additionally, in some patients, a complex pattern of tissue-specific enzyme defect was also observed. The lack of functional additional copies of Krebs cycle genes suggests that the complex expression pattern should be ascribed to tissue-specific regulations of transcriptional and/or translational activities, together with a variable cell adaptability to Krebs cycle functional defects.

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Crossref · 10.1016/s0925-4439(97)00035-5

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  • In mammals, disrupting TCA cycle function causes inborn errors of metabolism due to inherited mutations in genes encoding metabolic enzymes.

    “In mammals, the consequences of disrupting TCA cycle function can be found in a group of disorders known as inborn errors of metabolism, which are caused by inherited mutations in genes encoding metabolic enzymes.”
  • Human patients with mutations in TCA cycle-associated genes display neonatal symptoms, developmental defects, and failure to thrive.

    “Human patients who present with mutations in TCA cycle–associated genes display neonatal symptoms, developmental defects, and failure to thrive (9, 10).”
  • Increased fumarate levels in β-glucan-treated monocytes are driven by enhanced shunting of glutamine into the TCA cycle (glutamine anaplerosis).

    “Furthermore, increased fumarate levels were shown to be driven by enhanced shunting of glutamine into the TCA cycle, otherwise referred to as glutamine anaplerosis, as ascertained by a combination of biochemical techniques and the use of the glutaminase inhibitor, BPTES97.”
  • Treatment with MMF augments TNF and IL-6 secretion in β-glucan-trained macrophages stimulated with LPS.

    “Furthermore, treatment with MMF augmented TNF and IL-6 secretion in β-glucan-trained macrophages stimulated with LPS97.”
  • MMF alters histone methylation with similarities to β-glucan-induced training.

    “To determine the role of increased fumarate levels on the epigenetic landscape, Arts and colleagues (2016) used the cell permeable fumaric acid ester, monomethyl fumarate (MMF), which was shown to alter histone methylation with similarities to β-glucan induced training97.”

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Authors
Rustin, P., Bourgeron, T., Parfait, B., Chretien, D., Munnich, A., & Rötig, A.
Affiliations
  • Hôpital Necker-Enfants Malades (FR)
  • Inserm (FR)
Corresponding author
Rustin, P
Venue
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease
Publisher
Elsevier BV
Published
1997-08
Volume
1361
Issue
2
Pages
185-197
ISSN
0925-4439 (ISSN-L)
OpenAlex
W2102760479
Cited by
137
References
31
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 9 · 2021: 7 · 2020: 3 · 2019: 11 · 2018: 5 · 2017: 7 · 2016: 8 · 2015: 3 · 2014: 4 · 2013: 1 · 2012: 4
FWCI
1.81
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Biochemical Acid Research Studies
Keywords
inborn errors of metabolism, mitochondrial disease, Krebs cycle enzymes, genetic mutations, neuromuscular system, organ-specific metabolism, mitochondrial bioenergetics, tissue-specific gene expression
MeSH terms
Adolescent, Child, Child, Preschool, Citric Acid Cycle, Fumarate Hydratase, Humans, Infant, Ketoglutarate Dehydrogenase Complex, Metabolism, Inborn Errors, Mutation, Succinate Dehydrogenase

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