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On-line Access: 2020-07-07

Received: 2020-01-07

Revision Accepted: 2020-03-22

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Josef Finsterer


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Journal of Zhejiang University SCIENCE B 2020 Vol.21 No.7 P.590-592


Secondary manifestations of mitochondrial disorders

Author(s):  Josef Finsterer

Affiliation(s):  Krankenanstalt Rudolfstiftung, Messerli Institute, Vienna, Austria

Corresponding email(s):   fifigs1@yahoo.de

Key Words:  Mitochondrial disorder, nDNA, Multiple mtDNA deletions, Phenotype, Multisystem involvement

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Josef Finsterer. Secondary manifestations of mitochondrial disorders[J]. Journal of Zhejiang University Science B, 2020, 21(7): 590-592.

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mitochondrial disorders (MIDs) are a heterogeneous group of genetic metabolic diseases due to mutations in the mitochondrial DNA (mtDNA) or in the nuclear DNA (nDNA) (Rahman and Rahman, 2018). Some affected genes encode proteins with various functions, or structural RNAs such as transfer RNAs (tRNAs) and ribosomal RNAs (rRNAs). MIDs may also be caused by mutations in non-coding regions (e.g., D-loop of mtDNA) (Rahman and Rahman, 2018). Proteins involved in MIDs include enzymes, assembling factors, transport proteins, signaling proteins, pore proteins, and fusion/fission proteins (Gorman et al., 2016). The pathways most frequently affected by mutations in “mitochondrial genes” are the respiratory chain and the oxidative phosphorylation. Dysfunction of many other pathways (e.g., β-oxidation, pyruvate-dehydrogenase complex, and heme synthesis) may also manifest as MIDs (Hu et al., 2019). The estimated prevalence of MIDs is at least 1:5000 (Ng and Turnbull, 2016).



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