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A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
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[Mitochondrial diseases].

Florentine Radelfahr1, Thomas Klopstock2

  • 1Friedrich-Baur-Institut an der Neurologischen Klinik und Poliklinik, Klinikum der Universität München, Ziemssenstr. 1, 80336, München, Deutschland. florentine.radelfahr@med.uni-muenchen.de.

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PubMed
Summary
This summary is machine-generated.

Mitochondrial diseases (MD) stem from genetic mutations, affecting high-energy tissues. Current treatments focus on managing symptoms and supporting mitochondrial function, with gene therapy in early development.

Keywords:
CPEOLeber’s hereditary optic neuropathyMELASMitochondrial neurogastrointestinal encephalomyopathyNeurogenetics

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Area of Science:

  • Biochemistry
  • Genetics
  • Neurology

Background:

  • Mitochondrial diseases (MD) result from mutations in mitochondrial or nuclear DNA.
  • Clinical severity often correlates with tissue energy demand.
  • Common examples include Leber's hereditary optic neuropathy (LHON), CPEO, and MELAS.

Purpose of the Study:

  • To provide an introduction to mitochondrial diseases.
  • To summarize key mitochondrial disease syndromes.
  • To overview established and novel therapeutic strategies.

Main Methods:

  • Literature review of established and emerging treatments for MD.
  • Summary of common MD syndromes and their characteristics.
  • Discussion of gene therapy advancements.

Main Results:

  • MDs present with varied clinical manifestations, particularly in high-energy tissues.
  • Therapeutic strategies encompass respiratory chain support, metabolic stimulation, factor supplementation, and symptomatic care.
  • Gene therapy represents a promising causal treatment avenue, with initial clinical trials underway.

Conclusions:

  • Mitochondrial diseases require multifaceted treatment approaches.
  • Innovative therapies, including gene therapy, offer future potential for causal treatment.
  • Continued research is vital for understanding and managing these complex genetic disorders.