Radiation-induced fibrosis: mechanisms and implications for therapy
Identifieur interne : 007306 ( Ncbi/Checkpoint ); précédent : 007305; suivant : 007307Radiation-induced fibrosis: mechanisms and implications for therapy
Auteurs : Jeffrey M. Straub [États-Unis] ; Jacob New [États-Unis] ; Chase D. Hamilton [États-Unis] ; Chris Lominska [États-Unis] ; Yelizaveta Shnayder [États-Unis] ; Sufi M. Thomas [États-Unis]Source :
- Journal of cancer research and clinical oncology [ 0171-5216 ] ; 2015.
Abstract
Radiation-induced fibrosis (RIF) is a long-term side effect of external beam radiation therapy for the treatment of cancer. It results in a multitude of symptoms that significantly impact quality of life. Understanding the mechanisms of RIF-induced changes is essential to developing effective strategies to prevent long-term disability and discomfort following radiation therapy. In this review, we describe the current understanding of the etiology, clinical presentation, pathogenesis, treatment, and directions of future therapy for this condition.
A literature review of publications describing mechanisms or treatments of RIF was performed. Specific databases utilized included PubMed and clinicaltrials.gov, using keywords “Radiation-Induced Fibrosis,” “Radiotherapy Complications,” “Fibrosis Therapy,” and other closely related terms.
RIF is the result of a misguided wound healing response. In addition to causing direct DNA damage, ionizing radiation generates reactive oxygen and nitrogen species that lead to localized inflammation. This inflammatory process ultimately evolves into a fibrotic one characterized by increased collagen deposition, poor vascularity, and scarring. Tumor growth factor beta serves as the primary mediator in this response along with a host of other cytokines and growth factors. Current therapies have largely been directed toward these molecular targets and their associated signaling pathways.
Although RIF is widely prevalent among patients undergoing radiation therapy and significantly impacts quality of life, there is still much to learn about its pathogenesis and mechanisms. Current treatments have stemmed from this understanding, and it is anticipated that further elucidation will be essential for the development of more effective therapies.
Url:
DOI: 10.1007/s00432-015-1974-6
PubMed: 25910988
PubMed Central: 4573901
Affiliations:
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<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Purpose</title>
<p id="P1">Radiation-induced fibrosis (RIF) is a long-term side effect of external beam radiation therapy for the treatment of cancer. It results in a multitude of symptoms that significantly impact quality of life. Understanding the mechanisms of RIF-induced changes is essential to developing effective strategies to prevent long-term disability and discomfort following radiation therapy. In this review, we describe the current understanding of the etiology, clinical presentation, pathogenesis, treatment, and directions of future therapy for this condition.</p>
</sec>
<sec id="S2"><title>Methods</title>
<p id="P2">A literature review of publications describing mechanisms or treatments of RIF was performed. Specific databases utilized included PubMed and clinicaltrials.gov, using keywords “Radiation-Induced Fibrosis,” “Radiotherapy Complications,” “Fibrosis Therapy,” and other closely related terms.</p>
</sec>
<sec id="S3"><title>Results</title>
<p id="P3">RIF is the result of a misguided wound healing response. In addition to causing direct DNA damage, ionizing radiation generates reactive oxygen and nitrogen species that lead to localized inflammation. This inflammatory process ultimately evolves into a fibrotic one characterized by increased collagen deposition, poor vascularity, and scarring. Tumor growth factor beta serves as the primary mediator in this response along with a host of other cytokines and growth factors. Current therapies have largely been directed toward these molecular targets and their associated signaling pathways.</p>
</sec>
<sec id="S4"><title>Conclusion</title>
<p id="P4">Although RIF is widely prevalent among patients undergoing radiation therapy and significantly impacts quality of life, there is still much to learn about its pathogenesis and mechanisms. Current treatments have stemmed from this understanding, and it is anticipated that further elucidation will be essential for the development of more effective therapies.</p>
</sec>
</div>
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<name sortKey="Thomas, Sufi M" sort="Thomas, Sufi M" uniqKey="Thomas S" first="Sufi M." last="Thomas">Sufi M. Thomas</name>
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