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  • Title: Intracerebral delivery of carboplatin in combination with either 6 MV photons or monoenergetic synchrotron X-rays are equally efficacious for treatment of the F98 rat glioma.
    Author: Bobyk L, Edouard M, Deman P, Rousseau J, Adam JF, Ravanat JL, Estève F, Balosso J, Barth RF, Elleaume H.
    Journal: J Exp Clin Cancer Res; 2012 Sep 20; 31(1):78. PubMed ID: 22992374.
    Abstract:
    BACKGROUND: The purpose of the present study was to compare side-by-side the therapeutic efficacy of a 6-day infusion of carboplatin, followed by X-irradiation with either 6 MV photons or synchrotron X-rays, tuned above the K-edge of Pt, for treatment of F98 glioma bearing rats. METHODS: Carboplatin was administered intracerebrally (i.c.) to F98 glioma bearing rats over 6 days using AlzetTM osmotic pumps starting 7 days after tumor implantation. Radiotherapy was delivered in a single 15 Gy fraction on day 14 using a conventional 6 MV linear accelerator (LINAC) or 78.8 keV synchrotron X-rays. RESULTS: Untreated control animals had a median survival time (MeST) of 33 days. Animals that received either carboplatin alone or irradiation alone with either 78.8 keV or 6 MV had a MeSTs 38 and 33 days, respectively. Animals that received carboplatin in combination with X-irradiation had a MeST of > 180 days with a 55% cure rate, irrespective of whether they were irradiated with either 78.8 KeV synchrotron X-rays or 6MV photons. CONCLUSIONS: These studies have conclusively demonstrated the equivalency of i.c. delivery of carboplatin in combination with X-irradiation with either 6 MV photons or synchrotron X-rays.
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