title: Research progress in the radioprotective effect of superoxide dismutase.
abstract: Irradiation from diverse sources is ubiquitous and closely associated with human activity. Radiation therapy (RT), an important component of the multiple radiation origins, contributes significantly to oncotherapy by killing tumor cells. On the other hand, RT can also cause some undesired normal tissue injuries that afflict numerous cancer patients. Although many promising radioprotective agents are emerging, few of them have entered the market successfully due to various limitations. At present, the most accepted hypothesis for the radiation-caused injury involves reactive oxygen species (ROS) generation. Superoxide dismutase (SOD), the unique enzyme responsible for the dismutation of superoxide radicals, is expected to occupy an indispensable position in the treatment of ROS-mediated tissue injuries originating from exposure to radiation. This review focuses on the mechanism of radioprotection by SOD at the tissue or organ level, cellular level, and molecular level, respectively, in order to provide references for further investigation of radiation injury and development of new radioprotectors.
authors.affiliation: Key Laboratory of Chemical Biology of Natural Products, Ji'nan, Shandong, China.
authors.forename: X J
authors.initials: XJ
authors.lastname: Huang
authors.forename: C X
authors.initials: CX
authors.lastname: Song
authors.forename: C Q
authors.initials: CQ
authors.lastname: Zhong
authors.forename: F S
authors.initials: FS
authors.lastname: Wang
mesh_terms: D000975:Antioxidants / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use*; D035843:Biomedical Research; D002453:Cell Cycle / Q000187:drug effects; D004249:DNA Damage / Q000187:drug effects; D006801:Humans; D008958:Models, Molecular; D011832:Radiation Injuries / Q000235:genetics / Q000378:metabolism / Q000517:prevention & control*; D011837:Radiation-Protective Agents / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use*; D011878:Radiotherapy / Q000009:adverse effects; D017382:Reactive Oxygen Species / Q000378:metabolism; D013482:Superoxide Dismutase / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use*
chemical_list: D000975:Antioxidants; D011837:Radiation-Protective Agents; D017382:Reactive Oxygen Species; D013482:Superoxide Dismutase