Encapsulation of antihypertensive drugs in cellulose-based matrix microspheres: characterization and release kinetics of microspheres and tableted microspheres

References

• ABDEL MONEM SAYED, H., and PRICE, J. C., 1986, Tablet properties and dissolution characteristics of compressed cellulose acetate butyrate microcapsules containing succinyl sulfathiazole. Drug Developments in Industrial Pharmaceutics, 12, 577–587.
   Google Scholar
• AGYILIRAH, G. A., and NIXON, J. R., 1980, Preparation, tabletting and release characteristics of ethyl cellulose—walled microcapsules of phinobarbitone sodium. Acta Pharmaceutica Technologica, 26, 251–253.
   Google Scholar
• Ail, S. L., 1989, Nifedipine. In Analytical profiles of drug substances, Vol. 18, edited by K. Florey (New York: Academic Press), pp. 222–288.
   Google Scholar
• ARSHADY, R., 1991, Preparation of porous and nonporous biodegradable polymeric hollow microspheres. Journal of Controlled Release, 17, 1–22.
   Google Scholar
• AULTON, M. A., MAYER, A. M., and KHAN, K. A., 1994, The strength and compaction of millispheres. Drug Developments in Industrial Pharmaceutics, 20, 3069–3104.
   Google Scholar
• BAKER, R. W., and LONSDALE, H. K., 1974, Controlled release: mechanisms and rates. In Controlled Release of Biologically Active Agents, edited by A. C. Tanquarry and R. E. Lacey (New York: Plenum Press), pp. 15–71.
   Google Scholar
• BENOITA, J. P., PAINBENI, T., and VENIE—JULIENNE, M. C., 1996, Internal morphology of biodegradable BCNU—loaded microspheres. Proceedings of the International Symposium on Controlled Release in Bioactive Materials, 23, 379–380.
   Google Scholar
• BILLMEYER, F. D., JR., 1984, Text Book of Polymer Science, 2nd edn. (New York: John Willey and Sons, Inc.), pp. 449–452.
   Google Scholar
• BODMEIER, R., 1997, Tablet of coated pellets. European Journal of Pharmaceutics and Biopharmaceutics, 43, 1–8.
   Web of Science ®Google Scholar
• BODMEIER, R., and MCGINITY, J. W., 1988, Solvent selection in the preparation of poly(DL—lactide) microspheres prepared by the solvent evaporation method. International Journal of Pharmaceutics, 43, 179–186.
   Web of Science ®Google Scholar
• BRITISH NATIONAL FORMULARY, 1993, London, British Medical Association and Royal Pharmaceutical Society of Great Britain, No. 2, p. 83.
   Google Scholar
• GALEONE, M., NIZZOLA, L., CACIOLI, D., and MOSIE, G., 1981, In—vitro demonstration of delivery mechanism from sustained—release pellets. Current Therapeutic Research, 29, 217–234.
   Google Scholar
• GHEBRE-SELLASSIE, I., 1994, Multiple oral drug delivery (New York: Marcel Dekker). GURSOY, A., KARAKUS, D., and OKAR, I., 1999, Polymer for sustained release formulations of dipyridamole—alginate microspheres and tableted microspheres. Journal of Microencapsulation, 16, 439–452.
   Google Scholar
• JAISENJAK, I., NICOLAIDOU, C. F., and NIXON, J. R., 1977, Dissolution of tablets prepared using ethyl cellulose microcapsules. Journal of Pharmaceutics and Pharmacology, 29, 169–172.
   PubMedGoogle Scholar
• LIN, S. Y., 1988, Effect of excipients on tablet properties and dissolution behavior of theophylline—tableted microcapsules under different compression forces. Journal of Pharmaceutical Science, 77, 229–232.
   PubMedGoogle Scholar
• NOKHODCHI, A, BOLOURTCHIAN, N., and FARID, D., 1999, Effect of hydrophilic excipients and compression pressure on physical properties and release behavior of aspirin—tableted microcapsule. Drug Developments in Industrial Pharmaceutics, 25, 711–716.
   PubMedGoogle Scholar
• PEPPAS, N. A., 1985, Analysis of Fickian and non—Fickian drug release from polymers. Pharmaceutica Acta Helvetica, 60, 110–111.
   PubMedGoogle Scholar
• RITGER, P. L., and PEPPAS, N. A., 1987, A simple equation for description of solute release II. Fickian and anomalous release from swellable devices. Journal of Controlled Release, 5, 37–42.
   Google Scholar
• SAH, H., 1997, Microencapsulation techniques using ethyl acetate as a dispersed solvent: effect of its extraction rate on the characteristics of PLGA microspheres. Journal of Controlled Release, 47, 233–245.
   Web of Science ®Google Scholar
• SINGH, J., and ROBINSON, D. H., 1988, Controlled release kinetics of captopril from tabletted microcapsules. Drug Developments in Industrial Pharmaceutics, 14, 545–560.
   Google Scholar
• SOPPIMATH, K. S., KULKARNI, A. R., and AMINABHAVI, T. M., 1999, Controlled release of antihypertensive drug from crosslinked poly vinyl alcohol—guar gum microspheres. International Symposium on Controlled Release of Bioactive Materials, 26, 847–848.
   Google Scholar
• SOPPIMATH, K. S., KULKARNI, A. R., and AMINABHAVI, T. M., 2000a, Controlled release of antihypertensive drug from the interpenetrating network poly(vinyl alcohol)—guar gum hydrogel microspheres. Journal of Biomaterial Science—Polymer Edition, 11, 27–43.
   PubMedGoogle Scholar
• SOPPIMATH, K. S., KULKARNI, A. R., AMINABHAVI, T. M., and BASKAR, C., 2000b, Effect of process parameters on cellulose acetate microspheres prepared by w/o emulsification and solvent evaporation method, Journal of Microencapsulation, accepted.
   Google Scholar
• TIRKKONEN, S., and PARONEN, P., 1993, Release of indomethacin from tableted ethyl cellulose microcapsules. International Journal of Pharmaceutics, 92, 56–62.
   Google Scholar
• UNITED STATES PHARMACOPOEIAL CONVENTION, 1985, The United States Pharmacopoeia, XXI (MD, USA: United States Pharmacopoeial convention), p. 733.
   Google Scholar
• Wu, S. H., HOPKINS, W., FENGL, R., and WYATT, D., 1996, Effect of cellulose ester characteristics on controlled release of oral drug delivery systems. Proceedings of the International Symposium on Controlled Release of Bioactive Materials, 23, 53–54.
   Google Scholar
• YANG, L., and FASSIHIL, R. 1997, Verapamil delivery system based on biopharmaceutical consideration. Proceedings of the International Symposium on Controlled Release of Bioactive Materials, 24, 383–384.
   Google Scholar