title: Monolithic osmotic tablet containing solid dispersion of 10-hydroxycamptothecin.
abstract: A novel monolithic osmotic tablet composed of solid dispersion of water-insoluble 10-hydroxycamptothecin (HCPT) was prepared. The tablet core was made of a suspending agent, polyethylene oxide, an osmotic agent, sodium chloride, and a solid dispersion consisting of polyethylene glycol 6000 and HCPT. Optimized formulation was able to deliver HCPT at the constant rate of 1.21 mg/hour for 12 hours with cumulative release above 90% in vitro, independent of environmental media and stirring rate, and the release rate is co-controlled by osmotic pressure, suspending effect, and drug solubility in solid dispersion. The monolithic osmotic tablet containing solid dispersion has great potential in the controlled delivery of water-insoluble drugs.
authors.affiliation: Depatment of Chemical Engineering, Tsinghua University, Beijing, China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Chen
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Jiang
authors.forename: Fuxin
authors.initials: F
authors.lastname: Ding
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage* / Q000737:chemistry*; D002166:Camptothecin / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000737:chemistry; D002482:Cellulose / Q000031:analogs & derivatives / Q000737:chemistry; D002626:Chemistry, Pharmaceutical; D002851:Chromatography, High Pressure Liquid; D003692:Delayed-Action Preparations; D016503:Drug Delivery Systems; D005079:Excipients / Q000737:chemistry; D009995:Osmosis; D011092:Polyethylene Glycols / Q000737:chemistry; D012965:Sodium Chloride / Q000737:chemistry; D012995:Solubility; D013607:Tablets; D013678:Technology, Pharmaceutical / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D003692:Delayed-Action Preparations; D005079:Excipients; D013607:Tablets; C005062:acetylcellulose; D011092:Polyethylene Glycols; D012965:Sodium Chloride; D002482:Cellulose; C028098:10-hydroxycamptothecin; D002166:Camptothecin