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Mitochondrial diseases in adults.

C La Morgia1,2, A Maresca2, L Caporali2

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Journal of Internal Medicine
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Mitochondrial diseases, common genetic disorders in adults, arise from nuclear and mitochondrial DNA. Understanding their complex inheritance and expanded functions is key to diagnosis and treatment.

Keywords:
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Area of Science:

  • Mitochondrial medicine
  • Genetics
  • Cellular biology

Background:

  • Mitochondrial diseases are common adult genetic disorders.
  • They involve complex genotype-phenotype correlations.
  • Dual genetic control from nuclear (nDNA) and mitochondrial (mtDNA) genomes complicates understanding.

Purpose of the Study:

  • To summarize key clinical aspects of adult mitochondrial diseases.
  • To elucidate the pathogenic mechanisms.
  • To highlight the expanded scope of mitochondrial functions and clinical involvement.

Main Methods:

  • Review of current literature on mitochondrial medicine.
  • Analysis of genotype-phenotype correlations.
  • Examination of genetic inheritance patterns (nDNA and mtDNA).

Main Results:

  • Mitochondrial diseases are frequent in adults, despite individual rarity.
  • Pathogenesis involves nuclear and mitochondrial genomes, including mtDNA inheritance and expression.
  • Clinical manifestations have expanded beyond neuromuscular to nearly all medical specialties.

Conclusions:

  • Mitochondrial medicine has grown significantly over 30 years.
  • Understanding mtDNA peculiarities is crucial for comprehending disease mechanisms.
  • The broad clinical impact necessitates interdisciplinary approaches for diagnosis and management.