High-dose radiation induced heart damage in a rat model
BACKGROUND/AIM: Radiation-induced heart disease (RIHD) is a concern during radiotherapy. For its comprehensive study, an in vivo selective heart irradiation model was developed. MATERIALS AND METHODS: Sprague-Dawley rats were irradiated with 50 Gy and functional imaging, biochemical (circulating gro...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
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2016
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| Sorozat: | IN VIVO
30 No. 5 |
| mtmt: | 3105323 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/11798 |
| Tartalmi kivonat: | BACKGROUND/AIM: Radiation-induced heart disease (RIHD) is a concern during radiotherapy. For its comprehensive study, an in vivo selective heart irradiation model was developed. MATERIALS AND METHODS: Sprague-Dawley rats were irradiated with 50 Gy and functional imaging, biochemical (circulating growth differentiation factor-15 (GDF-15), transforming growth factor-beta (TGF-beta) and morphological (picrosirius red staining of the heart) objectives were tested. RESULTS: Signs and symptoms of RIHD occurred >12 weeks after irradiation with tachypnea, systolic and diastolic dysfunction, cardiac hypertrophy and body development retardation. Plasma GDF-15 was increased 3, 12 and 26, while plasma TGF-beta was increased 12 weeks after irradiation. At autopsy, extensive pleural fluid was found in the irradiated animals. Interstitial fibrosis could be reliably detected and quantified in irradiated hearts after a follow-up time of 19 weeks. CONCLUSION: The studied parameters could be used in future experiments for testing protective agents for prevention of radiation heart injury. |
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| Terjedelem/Fizikai jellemzők: | 623-631 |
| ISSN: | 0258-851X |