Evaluating the radioprotective effect of curcumin on rat’s heart tissues

Background: Heart injury is one of the most important concerns after exposure to a high dose of radiation in chest cancer radiotherapy or whole body exposure to a radiation disaster. Studies have proposed that increased level of inflammatory and pro-fibrotic cytokines following radiotherapy or radiation events play a key role in the development of several side effects such as cardiovascular disorders. In the current study, we aimed to evaluate the expression of IL-4 and IL-13 cytokines as well as signaling pathways such as IL4Ra1, IL13Ra2, Duox1 and Duox2. In addition, we detected the possible protective effect of curcumin on the expression of these factors and infiltration of inflammatory cells. Materials and Methods: Twenty rats were divided into 4 groups including control; curcumin treated; radiation; and radiation plus curcumin. After 10 weeks, rats were sacrificed for evaluation of mentioned parameters. Results: Results showed an increase in the level of IL-4 and all evaluated genes, as well as increased infiltration of lymphocytes and macrophages. Treatment with curcumin could attenuate these changes. Conclusion: Curcumin could reduce radiation-induced heart injury markers in rats.