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Emerging aspects of treatment in mitochondrial disorders.

Abstract
Mitochondrial diseases are clinically, biochemically and genetically heterogeneous disorders of two genomes, for which effective curative therapies are currently lacking. With the exception of a few rare vitamin/cofactor responsive conditions (including ACAD9 deficiency, disorders of coenzyme Q(10) biosynthesis, and Leigh syndrome caused by mutations in the SLC19A3 transporter), the mainstay of treatment for the vast majority of patients involves supportive measures. The search for a cure for mitochondrial disease is the subject of intensive research efforts by many investigators across the globe, but the goal remains elusive. The clinical and genetic heterogeneity, multisystemic nature of many of these disorders, unpredictable natural course, relative inaccessibility of the mitochondrion and lack of validated, clinically meaningful outcome measures, have all presented great challenges to the design of rigorous clinical trials. This review discusses barriers to developing effective therapies for mitochondrial disease, models for evaluating the efficacy of novel treatments and summarises the most promising emerging therapies in six key areas: 1) antioxidant approaches; 2) stimulating mitochondrial biogenesis; 3) targeting mitochondrial membrane lipids, dynamics and mitophagy; 4) replacement therapy; 5) cell-based therapies; and 6) gene therapy approaches for both mtDNA and nuclear-encoded defects of mitochondrial metabolism.
AuthorsShamima Rahman
JournalJournal of inherited metabolic disease (J Inherit Metab Dis) Vol. 38 Issue 4 Pg. 641-53 (Jul 2015) ISSN: 1573-2665 [Electronic] United States
PMID25962587 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)
Topics
  • Cell- and Tissue-Based Therapy
  • Genetic Therapy
  • Humans
  • Mitochondria (metabolism, pathology)
  • Mitochondrial Diseases (genetics, therapy)
  • Organelle Biogenesis

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