title: Evaluation of microwave assisted grafted sago starch as controlled release polymeric carrier.
abstract: In the present investigation an attempt has been made to develop a new co-polymeric material for controlled release tablet formulations. The acrylamide grafting was successfully performed on the backbone of sago starch. The modified starch was tested for acute toxicity and drug-excipient compatibility study. The grafted material was used in making of controlled release tablets of lamivudine. The formulations were evaluated for physical characteristics such as hardness, friability, %drug content and weight variations. The in vitro release study showed that the optimized formulation exhibited highest correlation (R) value in case of Higuchi model and the release mechanism of the optimized formulation predominantly exhibited combination of diffusion and erosion process. There was a significant difference in the pharmacokinetic parameters (T(max), C(max), AUC, V(d), T(1/2) and MDT) of the optimized formulation as compared to the marketed conventional tablet Lamivir(®) was observed. The pharmacokinetics parameters were showed controlled pattern and better bioavailability. The optimized formulation exhibited good stability and release profile at the accelerated stability conditions.
authors.affiliation: Biomaterials Lab, Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India. akhileshvikram@gmail.com
authors.forename: Akhilesh Vikram
authors.initials: AV
authors.lastname: Singh
authors.forename: Lila Kanta
authors.initials: LK
authors.lastname: Nath
mesh_terms: D002626:Chemistry, Pharmaceutical; D003692:Delayed-Action Preparations; D004337:Drug Carriers / Q000737:chemistry; D008872:Microwaves; D011108:Polymers / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*
chemical_list: D003692:Delayed-Action Preparations; D004337:Drug Carriers; D011108:Polymers; D013213:Starch
keywords: Controlled release; Grafted copolymer; Lamivudine; Sago starch