Abstract
This study was undertaken to evaluate hydrophilic antitumor agents administered in intraarterial (IA) infusions. Brain distributions of doxorubicin (Adriamycin, ADR) after IA infusions were determined in rabbit VX-2 brain tumor model. With right carotid infusions of ADR (8 rabbits), tumor center concentrations averaged 3.3 ± 1.42 μg/g (mean ± 1 SE), concentrations at least 100 times greater than in vitro inhibitory concentrations (IC50) of ADR for human gliomas. ADR concentrations in brain-around-tumor averaged 2.43 ± 0.81 μg/g, but were only 0.104 ± 0.019 μg/g in non-tumor-bearing hemisphere. In 15 rabbits with VX-2 brain tumors, carotid artery infusions of ADR increased mean survival times by 20.9 ± 8.3%. These findings are supported by animal study using IA infusions of ADR after hyperosmotic blood-brain barrier (BBB) disruption and study in brain tumor patients using IA infusions of ADR. These results show that significant amounts of relatively non-lipophilic drugs, with IA infusions, can penetrate brain tumor areas but still spare normal areas from toxic drug exposure.
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© 1991 Springer Science+Business Media Dordrecht
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Hassenbusch, S.J. (1991). Rabbit Brain Concentrations of Doxorubicin During Intraarterial Infusions. In: Paoletti, P., Takakura, K., Walker, M.D., Butti, G., Pezzotta, S. (eds) Neuro-Oncology. Developments in Oncology, vol 66. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3152-0_39
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DOI: https://doi.org/10.1007/978-94-011-3152-0_39
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