| Increased transendothelial permeability of anti-cancer agent carboplatin with the aid of hyperbaric oxygenation. | |
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MedLine Citation:
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PMID: 18798124 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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1. The objective was to investigate the transport of an anticancer agent carboplatin across the blood-brain barrier in combination with hyperbaric oxygenation treatment. An in vitro well-validated model of bovine brain capillary endothelial cells was used. 2. A transendothelial transport of doxorubicin, a known P-glycoprotein substrate, was enhanced 1.5-fold by verapamil for 2-h incubation at 37 degrees C. A transendothelial permeability coefficient of carboplatin (1.29 x 10(-3)cm min-1) was also increased 1.8-fold by verapamil. 3. Under the hyperbaric oxygenation conditions (at 0.2 MPa for the first 10 min), the transendothelial transport for 2 h of doxorubicin and carboplatin were increased 1.3- to 1.8-fold by hyperbaric oxygenation, like the suppressive effects of verapamil on P-gp function, without increase of the transport of lucifer yellow, a non P-glycoprotein substrate. 4. Combination of hyperbaric oxygenation treatment and verapamil could not further increase the permeability coefficients of these drugs that were already enhanced by either treatment, implying the P-glycoprotein-mediated carboplatin efflux transport similarly as doxorubicin. 5. Together with our reported high efficacy of carboplatin combined with hyperbaric oxygenation therapy on brain tumours, the present results suggest that carboplatin could be transported by P-glycoprotein, but that this efflux mechanism would be reduced by the hyperbaric oxygenation with the consequences of clinical efficacy. |
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Authors:
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H Yamazaki; M Shimizu; N Murayama; K Tanaka; S Nion; R Cecchelli |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Xenobiotica; the fate of foreign compounds in biological systems Volume: 38 ISSN: 1366-5928 ISO Abbreviation: Xenobiotica Publication Date: 2008 Oct |
Date Detail:
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Created Date: 2008-10-15 Completed Date: 2008-12-31 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 1306665 Medline TA: Xenobiotica Country: England |
Other Details:
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Languages: eng Pagination: 1298-304 Citation Subset: IM |
Affiliation:
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Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Japan. hyamazak@ac.shoyaku.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Antineoplastic Agents / administration & dosage, pharmacokinetics* Blood-Brain Barrier / metabolism* Capillary Permeability / physiology* Carboplatin / administration & dosage*, pharmacokinetics* Cattle Cells, Cultured Endothelial Cells / metabolism* Endothelium, Vascular / metabolism* Hyperbaric Oxygenation* Rats |
| Chemical | |
Reg. No./Substance:
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0/Antineoplastic Agents; 41575-94-4/Carboplatin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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