Evaluating the radioprotective effect of Cimetidine, IMOD, and hybrid radioprotectors agents: An in-vitro study. (August 2021)

• Record Type: Journal Article
• Authors: Rahgoshai, Siroos; Mehnati, Parinaz; Aghamiri, Mahmoud Reza; Haghighi Borujeini, Meysam; Banaei, Amin; Tarighatnia, Ali; Nader, Nader D.; Kiapour, Mohammad; Abedi-Firouzjah, Razzagh
• Is Part Of: Applied radiation and isotopes. Volume 174(2021)
• Publication Date: 2021-08
• Subjects: Radiation protection -- Hybrid radio-protector agents -- Cimetidine -- IMOD -- Lymphocytes -- Micronucleus assay; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2021.109760
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: Introduction: There are various radioprotective agents with different mechanisms that help to decrease ionizing radiation side effects. The radioprotective effect of Cimetidine and IMOD was assessed individually and compared with the hybrid radioprotectors agents (HRPAs-IMOD and Cimetidine) on human lymphocyte cells. Methods: Twenty healthy volunteers (ten men and ten women) participated in the present study. About 75 mL peripheral blood lymphocytes from each individual were collected, and they were divided into 36 groups. Briefly, the blood samples were treated with different concentrations of Cimetidine (12.6 and 25.2 μg/mL) and IMOD (0.04, 0.08, and 0.12 mg/mL), and also a combination of these agents, namely hybrid radioprotectors agents (HRPAs). Besides, the irradiated groups were exposed to 2 and 4 Gy of Co-60 gamma irradiation. The amount of cellular damage was assessed using the micronucleus assay. The repeated measurements and paired T-test statistical analysis were used to compare the micronucleus frequencies in different groups. Results: The micronucleus frequencies were significantly reduced (p < 0.05) in irradiated groups when the non-toxic concentrations of Cimetidine, IMOD, and HRPAs have been used. The reduction in micronucleus frequency was obtained 5–29% for Cimetidine and 40–51% for IMOD in peripheral blood lymphocytes irradiated with 2 Gy. This reduction in 4 Gy irradiation was 8–17% for Cimetidine and 27–37% for IMOD. The HRPAs resulted in a higher radioprotective effect, in a way that they cause up to 58% and 43% micronucleus frequency reduction in 2 and 4 Gy, respectively. Conclusion: In conclusion, the HRPAs showed the highest level of radioprotective. In addition, IMOD was remarkably higher radioprotective than Cimetidine, which may be related to its greater non-toxic concentrations. Highlights: The radio-protective effect of Cimetidine, IMOD, and their combination was assessed. Micronucleus assay was used to show the amount of cellular damage. The micronucleus frequencies were significantly reduced in irradiated groups. The combination of the agents showed the highest level of radioprotective.