FIG. 7.
Pretreatment with F15/JP4-039 preserves levels of cellular antioxidants in irradiated oral cavity tissue in tumor-bearing mice. Cellular antioxidant levels (Trolox units) were determined in tissue from the oral cavity of Fancd2+/+ and Fancd2−/− mice 24 h after: 28 Gy single fraction (panel A), 8 Gy × 4 irradiation (panel B) or in TC-1 orthotopic tumors 28 Gy irradiated (panel C). Mice were pretreated with F15 alone, F15/4-amino-Tempo and F15/JP4-039, 15 min before each radiation fraction.