| Autor: |
Michaela B. Kirschner, PhD, Mayura Meerang, PhD, Vanessa Orlowski, Katarzyna Furrer, MD, Fabienne Tschanz, PhD, Ivo Grgic, PhD, Virginia Cecconi, PhD, Maries van den Broek, PhD, Matthias Guckenberger, MD, Martin Pruschy, MD, Olivia Lauk, MD, Isabelle Opitz, MD |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
JTCVS Open, Vol 22, Iss , Pp 491-503 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2666-2736 |
| DOI: |
10.1016/j.xjon.2024.07.024 |
| Popis: |
Objective: To test the safety and efficacy of combination treatment for pleural mesothelioma (PM) with intracavitary cisplatin-fibrin (cis-fib) plus hemithoracic irradiation (IR) applied after lung-sparing surgery in an orthotopic immunocompetent rat model. Methods: We randomized male F344 rats into 5 groups: cis-fib (n = 9), 10 Gy IR (n = 6), 20 Gy IR (n = 9), cis-fib+10 Gy IR (n = 6), and cis-fib+20 Gy IR (n = 9). Subpleural tumor implantation was performed on day 0 with 1 million syngeneic rat mesothelioma cells (IL45-luciferase). Tumors were resected on day 9, followed by treatment with intracavitary cis-fib or vehicle control (NaCl-fib). On day 12, computed tomography–guided local irradiation in a single high dose of the former tumor region was applied. Results: We observed only short-term side effects related to 20 Gy radiotherapy. Compared to 20 Gy, 10 Gy IR did not show an impact on tumor growth. At 3 days after treatment with 20 Gy IR (day 15 of the experiment), we detected significantly smaller tumors in the cis-fib+IR group compared to IR alone (mean tumor growth, 252% vs 539%; P = .04). On day 21, there was a significant difference in tumor growth between cis-fib–treated and cis-fib+IR– treated tumors (mean tumor growth, 2295% vs 660%; P = .01). Conclusions: Localized treatment after tumor resection in PM aims to improve local tumor control. Irradiation applied in combination with intracavitary cis-fib in rats is safe up to a dosage of 20 Gy and shows an additive effect on tumor growth delay compared to the single treatments. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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