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Radiation sensitization of bacterial spores by cis-dichlorodiammineplatinum(II). [Bacillus megaterium]

Journal Article · · Radiat. Res.; (United States)
DOI:https://doi.org/10.2307/3574476· OSTI ID:7324034
The x irradiation of B. megaterium spores in aqueous suspension in the presence of cis-dichlorodiammineplatinum(II) (CPCA) results in biphasic survival curves showing pronounced increases in radiation sensitivity in N/sub 2/ , O/sub 2/, and in N/sub 2/O in the low-dose portion of the response. In N/sub 2/, the degree of CPCA-induced sensitization fully equals that due to O/sub 2/ alone. In the presence of O/sub 2/ and N/sub 2/O, the added component of sensitization is half that obtained under N/sub 2/ saturation. Additional results are also obtained in the presence of hydroxyl radical scavengers, and in the presence of N/sub 2/O. These results are additionally significant considering that CPCA has been successfully used in animal studies as an antitumor drug.
Research Organization:
Univ. of Texas, Austin
OSTI ID:
7324034
Journal Information:
Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 68:2; ISSN RAREA
Country of Publication:
United States
Language:
English