Assessment of Adaptive Response of Gamma Radiation in the Operating Room Personnel Exposed to Anesthetic Gases by Measuring the Relative Gene Expression Changes Ku80, Ligase1 and P53

Rajabi Pour M; Fardid R; Zare T; Kargar Shouroki F; Mosleh-Shirazi M A; Behzad Behbahani A

doi:10.31661/jbpe.v0i0.1273

Assessment of Adaptive Response of Gamma Radiation in the Operating Room Personnel Exposed to Anesthetic Gases by Measuring the Relative Gene Expression Changes Ku80, Ligase1 and P53

J Biomed Phys Eng. 2020 Apr 1;10(2):225-234. doi: 10.31661/jbpe.v0i0.1273. eCollection 2020 Apr.

Authors

Rajabi Pour M^{1

2}, Fardid R^{3

4}, Zare T⁵, Kargar Shouroki F⁶, Mosleh-Shirazi M A^{3

4}, Behzad Behbahani A⁷

Affiliations

¹ MSc, Department of Radiology, School of Paramedicine, Shiraz University of Medical Sciences, Shiraz, Iran.
² MSc, Department of Radiology, Hospital Imam Hussein Orzouieh, Kerman University of Medical Sciences, Kerman, Iran.
³ PhD, Ionizing and Non-ionizing radiation protection research center, School of Paramedicine, Shiraz University of Medical, Sciences, Shiraz, Iran.
⁴ PhD, Department of Radiology, School of Paramedicine, Shiraz University of Medical Sciences, Shiraz, Iran.
⁵ PhD Student, Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
⁶ PhD, Occupational Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
⁷ PhD, Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedicine, Shiraz University of Medical Sciences, Shiraz, Iran.

Abstract

Background: Some operating room personnel are occupationally exposed to genotoxic agents such as anesthetic gases and ionizing radiation. Adaptive response, as a defense mechanism, will occur when cells become exposed to a low dose of factors harming DNA (priming dose), which in the subsequent exposure to higher dose of those factors (challenging dose), show more resistance and sensibility.

Objective: The aim of this study was to investigate adaptive response or synergy of ionizing radiation in the operating room personnel exposed to anesthetic gases by evaluation of the relative gene expression changes of effective genes for DNA repair such as Ku80, Ligase1 and P53.

Material and methods: In this case-control study, 20 operating room personnel and 20 nurses (who were not present in the operating room) as controls were studied. Venous blood samples were drawn from participants. In order to evaluate the adaptive response, a challenging dose of 2Gy gamma radiation was applied to blood samples. Moreover, RNA extraction and cDNA synthesis were performed. Gene expression level was studied by RT-qPCR and compared with the control group.

Results: Ligase1 and P53 expression in the operating room personnel was significantly higher than that of the control group before irradiation (P˂0.001). Statistically, there was no significant difference in the Ku80 and P53 expression in the operating room personnel before and after irradiation.

Conclusion: Given the findings of this study, exposure to challenging dose of gamma radiation can induce adaptive response in expression of Ku80 and P53 genes in operating room personnel.

Keywords: Adaptive Response; Anesthetic Gases; DNA Repair; Gene Expression; Ionizing Radiation; Occupational Exposure; Operating Room Personnel; RT-qPCR.