来自耐辐射奇异球菌的一种物质对大肠杆菌的辐射防护作用

Radioprotection in E. coli by an agent from M. radiodurans.

作者信息

Goldstein L S, Gersten D M, Bruce A K

出版信息

Int J Radiat Biol Relat Stud Phys Chem Med. 1978 Oct;34(4):375-80. doi: 10.1080/09553007814551011.

Abstract

An agent extracted from the radioresistant bacterium M. radiodurans was found to protect several strains of E. coli from X-radiation. Optimal radioprotection was observed when the repair-proficient B/r strain was irradiated in the presence of the agent under hypoxic conditions. It is proposed that this agent acts to modify damage incurred in the presence of reduced oxygen concentrations so that this damage might be subsequently repaired.

摘要

人们发现，从耐辐射细菌耐辐射奇异球菌中提取的一种物质可保护多种大肠杆菌菌株免受X射线辐射。当在低氧条件下，在该物质存在的情况下对具有修复能力的B/r菌株进行辐照时，观察到了最佳的辐射防护效果。有人提出，这种物质的作用是改变在低氧浓度下产生的损伤，以便随后对这种损伤进行修复。