Reoxygenation of mouse mammary carcinoma by Fluosol-DA 20% and carbogen
Thesis/Dissertation
·
OSTI ID:5715016
The purpose of this study was to investigate the feasibility of using Fluosol-DA 20% in combination with carbogen inhalation to improve the radiotherapy of SCK tumors in A/J mice. The effect of i.v. injected Fluosol-DA and carbogen inhalation on the response of tumors to single and fractionated irradiation, and that on the changes in hypoxic cell fraction in the tumors were studied. The radiation-induced tumor growth delay and cure was enhanced by a D.M.F. of 2.10 and 1.86, respectively. The treatment slightly increased radiation-induced skin damage by a factor of 1.17 resulting in a therapeutic gain of 1.79 for growth delay and 1.59 for curability. Tumor growth delay by fractionated irradiation was enhanced by Fluosol-DA and carbogen treatment with a D.M.F. of 1.63. The hypoxic cell fraction, as measured with an in vivo-in vitro cloning method, was 39% in control tumors, and it decreased to only 5% in the tumors of animals treated with Fluosol-DA plus carbogen breathing.
- Research Organization:
- Minnesota Univ., Minneapolis, MN (USA)
- OSTI ID:
- 5715016
- Country of Publication:
- United States
- Language:
- English
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