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Quantification of Atherosclerosis in Mice
Published on: June 12, 2019
DNA damage and repair in atherosclerosis
Melli Mahmoudi1, John Mercer, Martin Bennett
1Division of Cardiovascular Medicine, University of Cambridge, Box 110, Addenbrooke's Hospital, Cambridge, CB2 2QQ, UK.
Human atherosclerosis involves DNA damage in circulating and vessel wall cells, likely caused by reactive oxygen species. This review covers DNA damage evidence, cellular responses like senescence and apoptosis, and damage-signaling mechanisms in atherosclerosis.
Area of Science:
- Biomedical science
- Molecular biology
- Cardiovascular research
Background:
- Atherosclerosis pathogenesis involves cellular and molecular changes.
- DNA damage is increasingly implicated in the development of atherosclerosis.
- Reactive oxygen species are suspected key mediators of DNA damage in this condition.
Purpose of the Study:
- To review the evidence linking DNA damage to human atherosclerosis.
- To explore the cellular responses to DNA damage in the context of atherosclerosis.
- To summarize the signaling pathways involved in DNA damage response.
Main Methods:
- Literature review of studies on DNA damage and atherosclerosis.
- Analysis of research on cellular responses (senescence, apoptosis, repair).
- Examination of molecular mechanisms of DNA damage signaling.
Main Results:
- Substantial evidence supports DNA damage in atherosclerosis affecting circulating and vessel wall cells.
- Reactive oxygen species are identified as primary culprits for DNA damage.
- Cellular responses include senescence, apoptosis, and DNA repair mechanisms.
Conclusions:
- DNA damage is a significant factor in atherosclerosis.
- Understanding cellular responses and signaling pathways is crucial for therapeutic strategies.
- Targeting DNA damage mechanisms may offer novel approaches for atherosclerosis treatment.
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Nucleotide Excision Repair
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Nucleotide Excision Repair
