Tumors were resected under bright light surgery (BLS) or FGS. Pre- and post-operative images with the OV-100 Small Animal Imaging System (Olympus Corp, Tokyo Japan) were obtained to assess the extent of surgical resection. Tumor diameter was measured every other day.Īll mice with primary tumor that had undergone FGS had complete resection compared with 58% of mice in the BLS group (P = 0.001). Percentage of tumor growth inhibition, growth delay time and regrowth delay time were evaluated. Results: For A549 xenografts in radiation alone, gefitinib alone and combination therapy groups, the percentage of tumor growth inhibition was 22.7%, 12.4% and 38.2%, respectively (F=25.75, P=0.000). Tumor regrowth delay time in combination therapy and irradiation alone groups was 23.4 and 10.2 days. Sensitizing enhancement ratio of combination group was 1.5 in growth and 1.7 in regrowth. The mice were derided into 4 groups: control, irradiation alone, Gefinitib alone and radiation combined with Genifitib. Radiation schedule was 3 fractions of 5 Gy, once daily. Gefitinib was daily administered by gavage at 100 mg/(kg EARLY SANDRA ORLOW NUDE FULL TEXT AVAILABLE.
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