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Journal of Bioactive and Compatible Polymers
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Mitomycin-C-loaded Alginate Carriers for Bladder Cancer Chemotherapy: In Vivo Studies

Muzaffer Erogglu

SSK Ihtisas Hospital, Department of Urology, Ankara, Turkey

Eylem Öztürk

Nalan Özdem{small accented upsilon}r

Em{small accented upsilon}r Bak{small accented upsilon} Denkbapi

Hacettepe University, Chemistry Department, Biochem. Division, Ankara, Turkey

Isin Dogan

Hacettepe University, Faculty of Medicine, Pathology Department, Ankara, Turkey

Abuzer Acar

Murat Güzel

Ankara University, Faculty of Veterinary, Ankara, Turkey

After a transurethral resection (TUR), chemotherapy and/or immunotherapy is usually applied for 6 to 36 weeks to prevent the recurrence of tumoral tissue. These therapies have many problems, so an alternative pharmacotherapeutic agent delivery system that would supply suitable drug levels for specific time periods was explored. A model pharmacotherapeutic agent, mitomycin-C, delivery system was prepared by using alginate, a mucoadhesive polymer, as the carrier. The alginate carriers were prepared by precipitation and cross-linked with ethylene glycol diglycydyl ether. The alginate carrier precipitation medium (CaCl2), cross-linker and mitomycin-C/alginate ratio were varied to obtain desired attachment to the inner wall of the bladder and provide optimum release rate of the agent. The carrier was cylindrically formed to facilitate insertion for in vivostudies. The mitomycin-C-loaded alginate carriers were implanted into the bladder of New Zealand rabbits. Swelling ratios of the alginate carriers varied from 20% to 45% based on precipitation medium and cross-linker concentration. Ultrasonographic and histopathological findings showed that alginate implants could be kept in position for 1 week.

Key Words: bladder cancer • transurethral resection (TUR) • alginate • mitomycin-C • controlled release

Journal of Bioactive and Compatible Polymers, Vol. 20, No. 2, 197-208 (2005)
DOI: 10.1177/0883911505051853
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