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Related Experiment Videos

Microcapsule chemoembolization for head and neck cancer.

Y Okamoto, A Konno, K Togawa

    Archives of Oto-Rhino-Laryngology
    |January 1, 1985
    PubMed
    Summary

    Microencapsulated cisplatin (CDDP-mc) delivered via arterial infusion showed lower blood levels but higher tissue concentrations in head and neck cancer patients. This targeted approach offers potent local antitumor effects with reduced systemic side effects.

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    Area of Science:

    • Oncology
    • Pharmaceutical Sciences
    • Biomedical Engineering

    Background:

    • Head and neck carcinomas pose significant treatment challenges.
    • Conventional systemic chemotherapy can lead to severe side effects.
    • Targeted drug delivery aims to improve therapeutic efficacy and reduce toxicity.

    Purpose of the Study:

    • To evaluate the efficacy and safety of microencapsulated cisplatin (CDDP-mc) delivered via selective arterial infusion for head and neck cancers.
    • To compare systemic drug levels and tissue concentrations between CDDP-mc and conventional cisplatin administration.
    • To assess the potential for localized antitumor effects and reduced systemic side effects.

    Main Methods:

    • Cisplatin (CDDP) was microencapsulated using ethylcellulose to create CDDP-mc.

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  • CDDP-mc was infused into the maxillary arteries of patients with head and neck carcinomas.
  • Blood and tissue levels of CDDP were measured and compared to patients receiving intravenous non-encapsulated CDDP.

    • Main Results:

    • Significantly lower CDDP levels were observed in the circulating blood of patients treated with CDDP-mc compared to intravenous administration.
    • Significantly higher CDDP concentrations were found in the tumor tissues of patients treated with CDDP-mc.
    • Microinfarction of malignant tissues was observed, suggesting a localized antitumor effect.

    Conclusions:

    • Selective arterial infusion of CDDP-mc provides intensive topical antitumor effects in head and neck carcinomas.
    • The microencapsulation and targeted delivery result in minimal systemic side effects due to prolonged drug release.
    • This approach holds promise for improved treatment outcomes in head and neck cancer patients.