title: Microwave initiated synthesis of polyacrylamide grafted guar gum (GG-g-PAM)-Characterizations and application as matrix for controlled release of 5-amino salicylic acid.
abstract: This paper details the study of applicability of microwave initiated synthesized polyacrylamide grafted guar gum (GG-g-PAM) as matrix for controlled release of 5-amino salicylic acid (a drug used for the treatment of ulcerative colitis). In vitro release of this drug from various grades of GG-g-PAM has been studied by USP dissolution method (paddle type). The effect of percentage grafting on the rate of drug release has been investigated. The power of the microwave oven and other factors being kept constant, the percentage grafting in turn is dependent on the net time of exposure to microwave irradiation; thus a correlation can be drawn between net time of irradiation and rate of drug release (from the matrix). This holds the promise of a tailor-made matrix, with the rate of drug release being precisely programmed at the molecular level. Further, the drug release study was carried out in different pH medium, to investigate the possibility of pH triggered release for colon targeted drug delivery (where the pH is alkaline).
authors.affiliation: Department of Applied Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India. gsen9@hotmail.com
authors.forename: Gautam
authors.initials: G
authors.lastname: Sen
authors.forename: Sumit
authors.initials: S
authors.lastname: Mishra
authors.forename: Usha
authors.initials: U
authors.lastname: Jha
authors.forename: Sagar
authors.initials: S
authors.lastname: Pal
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D003692:Delayed-Action Preparations / Q000737:chemistry / Q000378:metabolism; D004337:Drug Carriers / Q000138:chemical synthesis* / Q000737:chemistry*; D005609:Free Radicals / Q000737:chemistry; D005685:Galactans / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D006873:Hydroquinones / Q000737:chemistry; D007700:Kinetics; D008351:Mannans / Q000737:chemistry*; D019804:Mesalamine / Q000737:chemistry* / Q000378:metabolism*; D008855:Microscopy, Electron, Scanning; D008872:Microwaves; D053149:Plant Gums / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D005609:Free Radicals; D005685:Galactans; D006873:Hydroquinones; D008351:Mannans; D019804:Mesalamine; D053149:Plant Gums; D000099166:Polyacrylamides; C007894:guar gum; C031927:hydroquinone