Oxidative and non-oxidative DNA damage and cardiovascular disease

Qudsia Malik1, Karl E Herbert

  • 1Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital , Leicester , UK.

Free Radical Research
|February 7, 2012
PubMed

Insights

DNA damage is linked to cardiovascular disease, with studies suggesting it plays a mechanistic role, not just as a biomarker. Further research is encouraged to understand this connection in atherosclerosis.

Area of Science:

  • Molecular Biology
  • Cardiovascular Science
  • Genetics

Background:

  • Cardiovascular disease (CVD) risk factors are known to induce oxidative DNA damage.
  • Both nuclear and mitochondrial DNA are susceptible to this damage.

Purpose of the Study:

  • To explore the mechanistic role of DNA damage in cardiovascular disease.
  • To challenge the view of DNA damage as solely a biomarker for CVD.

Main Methods:

  • In vitro cell culture models.
  • Experimental models of cardiovascular disease.
  • Analysis of human patient samples.

Main Results:

  • Evidence links DNA damage to CVD across various models.
  • Oxidative stress contributes to DNA damage in CVD risk factors.
  • Recent studies suggest a direct mechanistic involvement of DNA damage in atherosclerosis.

Conclusions:

  • DNA damage is increasingly recognized for its mechanistic role in cardiovascular disease.
  • This insight necessitates further investigation into DNA damage pathways in CVD.

Related Concept Videos

Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
Mutations01:35

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Mutations01:39

Mutations

Overview
Nucleotide Excision Repair01:38

Nucleotide Excision Repair

DNA Distortion and Damage
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...