Cardiac and Renal Delayed Effects of Acute Radiation Exposure: Organ Differences in Vasculopathy, Inflammation, Senescence and Oxidative Balance

Joseph L. Unthank, Miguel Ortiz, Hina Trivedi, Louis Pelus, Carol H. Sampson, Rajendran Sellamuthu, Alexa Fisher, Hui Lin Chua, Artur Plett, Christie Orschell, Eric P. Cohen, Steven Miller

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have previously shown significant pathology in the heart and kidney of murine hematopoietic-acute radiation syndrome (H-ARS) survivors of 8.7-9.0 Gy total-body irradiation (TBI). The goal of this study was to determine temporal relationships in the development of vasculopathy and the progression of renal and cardiovascular delayed effects of acute radiation exposure (DEARE) at TBI doses less than 9 Gy and to elucidate the potential roles of senescence, inflammation and oxidative stress. Our results show significant loss of endothelial cells in coronary arteries by 4 months post-TBI (8.53 or 8.72 Gy of gamma radiation). This loss precedes renal dysfunction and interstitial fibrosis and progresses to abnormalities in the arterial media and adventitia and loss of coronary arterioles. Major differences in radiation-induced pathobiology exist between the heart and kidney in terms of vasculopathy progression and also in indices of inflammation, senescence and oxidative imbalance. The results of this work suggest a need for different medical countermeasures for multiple targets in different organs and at various times after acute radiation injury to prevent the progression of DEARE. Unthank, J. L, Ortiz, M., Trivedi, H., Pelus, L. M., Sampson, C. H., Sellamuthu, R., Fisher, A., Chua, H. L., Plett, A., Orschell, C. M., Cohen, E. P. and Miller, S. J. Cardiac and Renal Delayed Effects of Acute Radiation Exposure: Organ Differences in Vasculopathy, Inflammation, Senescence and Oxidative Balance. Radiat. Res. 191, 383-397 (2019).

Original languageEnglish (US)
Pages (from-to)383-397
Number of pages15
JournalRadiation research
Volume191
Issue number5
DOIs
StatePublished - May 1 2019

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radiation dosage
progressions
organs
kidneys
Whole-Body Irradiation
Inflammation
Kidney
irradiation
arterioles
radiation injuries
fibrosis
countermeasures
abnormalities
pathology
radiation
arteries
Acute Radiation Syndrome
interstitials
Tunica Media
Radiation Dosage

ASJC Scopus subject areas

  • Biophysics
  • Radiation
  • Radiology Nuclear Medicine and imaging

Cite this

Cardiac and Renal Delayed Effects of Acute Radiation Exposure : Organ Differences in Vasculopathy, Inflammation, Senescence and Oxidative Balance. / Unthank, Joseph L.; Ortiz, Miguel; Trivedi, Hina; Pelus, Louis; Sampson, Carol H.; Sellamuthu, Rajendran; Fisher, Alexa; Chua, Hui Lin; Plett, Artur; Orschell, Christie; Cohen, Eric P.; Miller, Steven.

In: Radiation research, Vol. 191, No. 5, 01.05.2019, p. 383-397.

Research output: Contribution to journalArticle

Unthank, JL, Ortiz, M, Trivedi, H, Pelus, L, Sampson, CH, Sellamuthu, R, Fisher, A, Chua, HL, Plett, A, Orschell, C, Cohen, EP & Miller, S 2019, 'Cardiac and Renal Delayed Effects of Acute Radiation Exposure: Organ Differences in Vasculopathy, Inflammation, Senescence and Oxidative Balance', Radiation research, vol. 191, no. 5, pp. 383-397. https://doi.org/10.1667/RR15130.1
Unthank, Joseph L. ; Ortiz, Miguel ; Trivedi, Hina ; Pelus, Louis ; Sampson, Carol H. ; Sellamuthu, Rajendran ; Fisher, Alexa ; Chua, Hui Lin ; Plett, Artur ; Orschell, Christie ; Cohen, Eric P. ; Miller, Steven. / Cardiac and Renal Delayed Effects of Acute Radiation Exposure : Organ Differences in Vasculopathy, Inflammation, Senescence and Oxidative Balance. In: Radiation research. 2019 ; Vol. 191, No. 5. pp. 383-397.
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