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Cancer Biother Radiopharm. 2009 Jun;24(3):347-52. doi: 10.1089/cbr.2008.0565.

Synergistic effect of diosmin and interferon-alpha on metastatic pulmonary melanoma.

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University of Murcia Institute of Research into Aging, Department of Pathology, Faculty of Medicine, University of Murcia, Murcia, Spain.


Melanoma is the most important skin cancer in terms of mortality, besides developing metastasis in about a third of the patients. Interferon-alpha (IFN-alpha), a highly toxic cytokine, tends to be one of the most important treatments for melanoma. Much effort is being directed at obtaining less-toxic antitumoral compounds, particularly natural compounds such as flavonoids. Our aim was to study the combined treatment of metastatic lung melanoma with IFN-alpha and diosmin in a murine model. In this article, we report the effect of a combined treatment of IFN-alpha and the flavonoid, diosmin, on a murine model of metastatic B16F10 melanoma, assessed both macroscopically (counting subpleural nodules) and microscopically by image analysis (calculating three indices). IFN-alpha showed a dose-dependent anti-invasive and antiproliferative activity in our study, while diosmin showed an anti-invasive activity similar to the lower dose of IFN-alpha used. However, the most relevant result was the synergistic antiproliferative effect shown by the combination of the flavonoid and the lowest dose of IFN-alpha, which was similar to that produced by the highest dose of the cytokine alone.

[Indexed for MEDLINE]

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