화학공학소재연구정보센터
Macromolecular Research, Vol.25, No.11, 1145-1152, November, 2017
pH-sensitive mesalazine carrier for colon-targeted drug delivery: A two-fold composition of mesalazine with a clay and alginate
E-mail:,
The release of mesalazine, an anti-inflammatory drug for Crohn’s disease, should be deferred while delivering along the gastrointestinal tract to maximize drug absorption in the colon. To that end, we intercalated mesalazine into a clay mineral, montmorillonite (MMT), and we encapsulated the resulting composite inside a pHsensitive polymer, an alginate hydrogel bead. Once intercalated between the microscopic MMT layers, the mesalazine is prevented from dissolution during encapsulation into the alginate beads. As the resulting mesalazine-clay-alginate (MCA) bead is covered with a protective alginate layer, the mesalazine does not dissolve in acidic gastric conditions. In in vitro release tests, the MCA beads exhibited less than 5% mesalazine release in gastric solution, while ~20% was released over 7 h in the intestinal condition. Our results demonstrate that the MCA bead is a highly effective, biocompatible means of mesalazine delivery to the colon.
  1. Aguzzi C, Capra P, Bonferoni C, Cerezo P, Salcedo I, Sanchez R, Caramella C, Viseras C, Appl. Clay Sci., 50, 106 (2010)
  2. Layer PH, Goebell H, Keller J, Dignass A, Klotz U, Gastroenterology, 108, 1427 (1995)
  3. Omwancha WS, Mallipeddi R, Valle BL, Neau SH, Int. J. Pharm., 441, 343 (2013)
  4. Yang JH, Lee JH, Ryu HJ, Elzatahry AA, Alothman ZA, Choy JH, Appl. Clay Sci., 130, 20 (2016)
  5. Rodrigues LADS, Figueiras A, Veiga F, de Freitas RM, Nunes LCC, da Silva Filho EC, da Silva Leite CM, Colloids Surf. B: Biointerfaces, 103, 642 (2013)
  6. Jayrajsinh S, Shankar G, Agrawal YK, Bakre L, J. Drug Deliv. Sci. Technol., 39, 200 (2017)
  7. Khalil H, Mahajan D, Rafailovich M, Polym. Int., 54, 423 (2005)
  8. Park JK, Choy YB, Oh JM, Kim JY, Hwang SJ, Choy JH, Int. J. Pharm., 359, 198 (2008)
  9. Joshi GV, Kevadiya BD, Patel HA, Bajaj HC, Jasra RV, Int. J. Pharm., 374, 53 (2009)
  10. Song D, Park SJ, Kang HW, Park SB, Han JI, J. Chem. Eng. Data, 58, 2455 (2013)
  11. Tugcu-Demiroz F, Acarturk F, Takka S, Konus-Boyunaga O, Eur. J. Pharm. Biopharm., 67, 491 (2007)
  12. Lin YH, Liang HF, Chung CK, Chen MC, Sung HW, Biomaterials, 26, 2105 (2005)
  13. Ribeiro LNM, Alcantara ACS, Darder M, Aranda P, Araujo-Moreira FM, Ruiz-Hitzky E, Int. J. Pharm., 463, 1 (2014)
  14. Neufeld L, Bianco-Peled H, Int. J. Pharm., 491, 170 (2015)
  15. Ijagbemi CO, Baek MH, Kim DS, J. Hazard. Mater., 166(1), 538 (2009)
  16. Allgayer H, Sonnenbichler J, Kruis W, Paumgartner G, Arzneimittelforschung, 35, 1457 (1985)
  17. Nassar MY, El-Shahat MF, Khalile SM, El-Desawy M, Mohamed EA, J. Therm. Anal. Calorim., 117, 463 (2014)
  18. Hou D, Hu S, Huang Y, Gui R, Zhang L, Tao Q, Zhang C, Tian S, Komarneni S, Ping Q, Appl. Clay Sci., 119, 277 (2016)
  19. Kevadiya GVJBD, Patel HA, Ingole PG, Mody HM, Bajaj HC, J. Biomater. Appl., 25, 161 (2010)
  20. Zorica SBAM, Tomic P, Babic BM, Poharc Logar VA, Dordevic AR, Cupac SB, J. Agr. Sci., 56, 25 (2011)
  21. Pongjanyakul T, Rongthong T, Carbohydr. Polym., 81, 409 (2010)
  22. Østberg T, Graffner C, Int. J. Pharm., 111, 271 (1994)