title: Design and development of ligand-appended polysaccharidic nanoparticles for the delivery of oxaliplatin in colorectal cancer.
abstract: Hyaluronic acid-coupled chitosan nanoparticles bearing oxaliplatin (L-OHP) encapsulated in Eudragit S100-coated pellets were developed for effective delivery to colon tumors. The in vitro drug release was investigated using a USP dissolution rate test paddle-type apparatus in different simulated gastrointestinal tract fluids. In therapeutic experiments the pellets of free drug, and hyaluronic acid-coupled and uncoupled chitosan nanoparticles bearing L-OHP were administered orally at the dose of 10 mg L-OHP/kg body weight to tumor-bearing Balb/c mice. In vivo data showed that hyaluronic acid-coupled chitosan nanoparticles delivered 1.99 +/- 0.82 and 9.36 +/- 1.10 microg of L-OHP/g of tissue in the colon and tumor, respectively after 12 hours, reflecting its targeting potential to the colon and tumor. These drug delivery systems show relatively high local drug concentration in the colonic milieu and colonic tumors with prolonged exposure time, which provides a potential to enhance antitumor efficacy with low systemic toxicity for the treatment of colon cancer.
  
  
  BACKGROUND
  In this study, a nanoparticle system was developed to deliver oxaliplatin to colorectal tumors. In murine models, the drug delivery system showed relatively high local drug concentration in colonic tumors with prolonged exposure time, which provides a potential for enhanced antitumor efficacy with low systematic toxicity.
authors.affiliation: Department of Pharmaceutical Sciences, Dr. Hari Singh Gour Vishwavidyalaya, Sagar, India.
authors.forename: Anekant
authors.initials: A
authors.lastname: Jain
authors.forename: Sanjay K
authors.initials: SK
authors.lastname: Jain
authors.forename: N
authors.initials: N
authors.lastname: Ganesh
authors.forename: Jaya
authors.initials: J
authors.lastname: Barve
authors.forename: Aadil M
authors.initials: AM
authors.lastname: Beg
mesh_terms: D000818:Animals; D002152:Calorimetry, Differential Scanning; D048271:Chitosan / Q000737:chemistry; D015179:Colorectal Neoplasms / Q000188:drug therapy*; D016503:Drug Delivery Systems; D019073:HT29 Cells; D006801:Humans; D006820:Hyaluronic Acid / Q000737:chemistry*; D008024:Ligands; D051379:Mice; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009944:Organoplatinum Compounds / Q000008:administration & dosage* / Q000097:blood / Q000493:pharmacokinetics / Q000627:therapeutic use*; D000077150:Oxaliplatin; D011877:Radionuclide Imaging; D012074:Remission Induction; D017550:Spectroscopy, Fourier Transform Infrared; D014018:Tissue Distribution; D014961:X-Ray Diffraction; D023041:Xenograft Model Antitumor Assays
chemical_list: D008024:Ligands; D009944:Organoplatinum Compounds; D000077150:Oxaliplatin; D006820:Hyaluronic Acid; D048271:Chitosan