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Fluorovisualization effect of acridine orange on mouse osteosarcoma
K Kusuzaki1, T Suginoshita, G Minami
1Department of Orthopaedic Surgery, Kyoto Prefectural University of Medicine, Japan.
Anticancer Research
|November 4, 2000
Summary
Acridine orange (AO) can visualize even small osteosarcoma tumors in mice. This fluorescent dye shows promise for improving surgical tumor removal and preserving limb function in patients.
Area of Science:
- Oncology
- Surgical Oncology
- Medical Imaging
Background:
- Musculoskeletal sarcomas require precise surgical resection to preserve limb function.
- Current visualization methods during surgery may not detect small or metastatic tumors effectively.
Purpose of the Study:
- To evaluate the utility of acridine orange (AO) for intraoperative fluorovisualization of osteosarcoma.
- To determine the optimal timing and dosage of AO for tumor imaging.
Main Methods:
- A mouse osteosarcoma model (MOS) was utilized.
- Acridine orange (AO) was administered intravenously at a dose of 10 mg/kg.
- Tumor fluorescence was assessed at various time points post-injection.
Main Results:
- Maximum fluorescence for osteosarcoma visualization was achieved 2 hours after AO injection.
- The dye successfully visualized even small, 1-mm pulmonary metastatic lesions.
- High contrast between tumor and normal tissue was observed.
Conclusions:
- Acridine orange (AO) demonstrates significant potential for the specific fluorovisualization of osteosarcomas during surgery.
- AO-guided surgery could lead to more complete tumor resection and better patient outcomes.
- Further clinical studies are warranted to confirm AO's efficacy in human osteosarcoma surgery.