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Mitochondrial Disease-Its Impact, Etiology, and Pathology

Lookup NU author(s): Professor Bobby McFarlandORCiD, Professor Robert Taylor, Emeritus Professor Doug Turnbull


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Mitochondria are ubiquitous organelles that are intimately involved in many cellular processes, but whose principal task is to provide the energy necessary for normal cell functioning and maintenance. Disruption of this energy supply can have devastating consequences for the cell, organ, and individual. Over the last two decades, mutations in both mitochondrial DNA (mtDNA) and nuclear DNA have been identified as causative in a number of well-characterized clinical syndromes, although for mtDNA mutations in particular, this relationship between genotype and phenotype is often not straightforward. Despite this, a number of epidemiological studies have been undertaken to assess the prevalence of mtDNA mutations and these have highlighted the impact that mtDNA disease has on both the community and individual families. Although there has been considerable improvement in the diagnosis of mitochondrial disorders, disappointingly this has not been matched by developments toward effective treatment. Nevertheless, our understanding of mitochondrial biology is gathering pace and progress in this area will be crucial to devising future treatment strategies. In addition to mitochondrial disease, evidence for a central role of mitochondria in other processes, such as aging and neurodegeneration, is slowly accumulating, although their role in cancer remains controversial. In this chapter, we discuss these issues and offer our own views based on our cumulative experience of investigating and managing these diseases over the last 20 years. © 2007, Elsevier Inc. © 2006 Elsevier Inc. All rights reserved.

Publication metadata

Author(s): McFarland R, Taylor RW, Turnbull DM

Publication type: Review

Publication status: Published

Journal: Current Topics in Developmental Biology

Year: 2007

Volume: 77

Pages: 113-155

Print publication date: 01/01/2007

ISSN (print): 0070-2153

ISSN (electronic): 1557-8933


DOI: 10.1016/S0070-2153(06)77005-3

PubMed id: 17222702