ArticleAnnals of medicine and surgery (2012)2023
Thermal necrosis in orthopedic bone tumors: experimental research.
Article in Annals of medicine and surgery (2012), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors at 2 institutions in 2 countries.
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Abstract
Introduction: The extent of surgical resection in orthopedic oncology differs according to tumor biology. While malignant bone tumors are operatively managed with wide resection, benign bone tumors and metastatic carcinomas are often treated through intralesional excision and adjuvant modalities, including the elimination of residual neoplastic cells through thermal necrosis. This study investigates in vitro temperature thresholds for thermal necrosis in common orthopedic bone tumors. Methodology: Eleven cell lines, including metastatic carcinomas to bone (A549, A498, FU-UR-1, PC3, MDA-MB-231, TT, MCF7, and K1), giant cell tumor of bone, osteosarcoma (HG-63), and control non-neoplastic cells (HEK293) were cultured. Cells were exposed to thermal stress at varying times and temperatures and evaluated for survival and viability with crystal violet and MTT assays. Results: Both the MTT and crystal violet assay demonstrated statistically superior rates of viability and survival for A549 (lung carcinoma), FU-UR-1 (renal carcinoma), K1 (thyroid carcinoma), and MG-63 (osteosarcoma) cell lines compared to control (HEK293 cells) at 60°C. Additionally, the MTT assay demonstrated superior viability for PC3 (prostate carcinoma), MCF7 (breast carcinoma), and A498 (renal carcinoma) compared to control. All cell lines demonstrated significantly decreased survival and viability in temperatures more than 90°C. Conclusion: This study demonstrated in vitro thresholds for thermal necrosis for cell lines of common orthopedic tumors of bone. The A549 (lung carcinoma), K1 (thyroid carcinoma), and FU-UR-1 (renal carcinoma) cell lines demonstrated greater resistance to heat stress compared to non-neoplastic control cells. Temperatures in excess of 90°C are necessary to reliably reduce cell survival and viability to less than 10%.
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