Abstract
Mitochondrial dysfunction is a fundamental mechanism in the pathogenesis of several significant toxicities in mammals, especially those associated with the liver, skeletal and cardiac muscle, and the central nervous system. These changes can also occur as part of the natural aging process and have been linked to cellular mechanisms in several human disease states including Parkinsons and Alzheimers, as well as ischemic perfusion injury and the effects of hyperglycemia in diabetes mellitus. Our knowledge of the effects of xenobiotics on mitochondrial function has expanded to the point that chemical structure and properties can guide the pharmaceutical scientist in anticipating mitochondrial toxicity. Recognition that maintenance of the mitochondrial membrane potential is essential for normal mitochondrial function has resulted in the development of predictive cell-based or isolated mitochondrial assay systems for detecting these effects with new chemical entities. The homeostatic role of some uncoupling proteins, differences in mitochondrial sensitivity to toxicity, and the pivotal role of mitochondrial permeability transition (MPT) as the determinant of apoptotic cell death are factors that underlie the adverse effects of some drugs in mammalian systems. In order to preserve mitochondrial integrity in potential target organs during therapeutic regimens, a basic understanding of mitochondrial function and its monitoring in the drug development program are essential. Toward this end, this review focuses on two topics, (1) the specific effects of xenobiotics on mitochondrial structure and function and (2) a summarization of current methods for quantifying these changes in a preclinical toxicology laboratory.
Keywords: mitochondria, liver, hepatotoxicity, review
Current Medicinal Chemistry
Title: Drug-Associated Mitochondrial Toxicity and its Detection
Volume: 12 Issue: 16
Author(s): David E. Amacher
Affiliation:
Keywords: mitochondria, liver, hepatotoxicity, review
Abstract: Mitochondrial dysfunction is a fundamental mechanism in the pathogenesis of several significant toxicities in mammals, especially those associated with the liver, skeletal and cardiac muscle, and the central nervous system. These changes can also occur as part of the natural aging process and have been linked to cellular mechanisms in several human disease states including Parkinsons and Alzheimers, as well as ischemic perfusion injury and the effects of hyperglycemia in diabetes mellitus. Our knowledge of the effects of xenobiotics on mitochondrial function has expanded to the point that chemical structure and properties can guide the pharmaceutical scientist in anticipating mitochondrial toxicity. Recognition that maintenance of the mitochondrial membrane potential is essential for normal mitochondrial function has resulted in the development of predictive cell-based or isolated mitochondrial assay systems for detecting these effects with new chemical entities. The homeostatic role of some uncoupling proteins, differences in mitochondrial sensitivity to toxicity, and the pivotal role of mitochondrial permeability transition (MPT) as the determinant of apoptotic cell death are factors that underlie the adverse effects of some drugs in mammalian systems. In order to preserve mitochondrial integrity in potential target organs during therapeutic regimens, a basic understanding of mitochondrial function and its monitoring in the drug development program are essential. Toward this end, this review focuses on two topics, (1) the specific effects of xenobiotics on mitochondrial structure and function and (2) a summarization of current methods for quantifying these changes in a preclinical toxicology laboratory.
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Cite this article as:
Amacher E. David, Drug-Associated Mitochondrial Toxicity and its Detection, Current Medicinal Chemistry 2005; 12 (16) . https://dx.doi.org/10.2174/0929867054546663
DOI https://dx.doi.org/10.2174/0929867054546663 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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