Abstract
The renin-angiotensin system, local or systemic, plays a key role in normal tissue radiation injury. Angiotensin converting enzyme (ACE) inhibitors, which act to attenuate the conversion of angiotensin I to angiotensin II, are beneficial in mitigating experimental renal, lung, or brain normal tissue radiation injury. The benefit of ACE inhibitors and angiotensin II blockers has been particularly well documented in experimental radiation nephropathy, for either mitigation or treatment. The mechanism for this benefit remains incompletely understood. In particular, control of hypertension, proteinuria, or radiation-induced cell proliferation alone does not appear to determine the benefit of ACE inhibitors or angiotensin II blockers. Nonetheless, the significant experimental benefit of those agents fully justifies their use in human radiation nephropathy. Clinical trials using ACE inhibitors are underway in subjects undergoing radiation-based bone marrow transplantation and also in subjects undergoing curative radiotherapy for lung cancer.
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Cohen, E.P., Joines, M.M., Moulder, J.E. (2008). Prevention and Treatment of Radiation Injuries. In: Rubin, P., Constine, L.S., Marks, L.B., Okunieff, P. (eds) Late Effects of Cancer Treatment on Normal Tissues. Medical Radiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-49070-8_9
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DOI: https://doi.org/10.1007/978-3-540-49070-8_9
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