Implantable 5-fluorouracil loaded chitosan scaffolds prepared by wet spinning


Denkbas E. B. , SEYYAL M., PISKIN E.

JOURNAL OF MEMBRANE SCIENCE, cilt.172, ss.33-38, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 172
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0376-7388(00)00314-8
  • Dergi Adı: JOURNAL OF MEMBRANE SCIENCE
  • Sayfa Sayıları: ss.33-38

Özet

5-Fuorouracil (5-FU) loaded scaffolds composed of chitosan fibers were prepared by a modified wet spinning technique. Chitosan aqueous solutions in acetic acid were used. Ethyl alcohol was the main component in the precipitation medium in which glutaraldehyde was utilized as the cross-linker. The scaffolds were quite swellable. Equilibrium swellings (upto about 56.8% swelling ratio) were achieved in about 90 min. 5-FU loading, which was achieved during fiber formation was low and was in the range of 0.21-7.55 mg 5-FU/g chitosan. Drug release, which was investigated in phosphate buffer at physiological conditions, was high at the initial period (in the first 90 min) in parallel to swelling, and reached almost a constant but at a much slower rate after that. Much slower release rates were observed in the initial period when the cross-linker density was high. (C) 2000 Elsevier Science B.V. All rights reserved.