title: Development of biodegradable polymer based tamoxifen citrate loaded nanoparticles and effect of some manufacturing process parameters on them: a physicochemical and in-vitro evaluation.
abstract: The aim of the present study was to develop nanoparticles of tamoxifen citrate, a non-steroidal antiestrogenic drug used for the treatment of breast cancer. Biodegradable poly (D, L- lactide-co-glycolide)-85:15 (PLGA) was used to develop nanoparticles of tamoxifen citrate by multiple emulsification (w/o/w) and solvent evaporation technique. Drug-polymer ratio, polyvinyl alcohol concentrations, and homogenizing speeds were varied at different stages of preparation to optimize the desired size and release profile of drug. The characterization of particle morphology and shape was performed by field emission scanning electron microscope (FE-SEM) and particle size distribution patterns were studied by direct light scattering method using zeta sizer. In vitro drug release study showed that release profile of tamoxifen from biodegradable nanoparticles varied due to the change in speed of centrifugation for separation. Drug loading efficiency varied from 18.60% to 71.98%. The FE-SEM study showed that biodegradable nanoparticles were smooth and spherical in shape. The stability studies of tamoxifen citrate in the experimental nanoparticles showed the structural integrity of tamoxifen citrate in PLGA nanoparticles up to 60°C in the tested temperatures. Nanoparticles containing tamoxifen citrate could be useful for the controlled delivery of the drug for a prolonged period.
authors.affiliation: Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India.
authors.forename: Basudev
authors.initials: B
authors.lastname: Sahana
authors.forename: Kousik
authors.initials: K
authors.lastname: Santra
authors.forename: Sumit
authors.initials: S
authors.lastname: Basu
authors.forename: Biswajit
authors.initials: B
authors.lastname: Mukherjee
mesh_terms: D001943:Breast Neoplasms / Q000188:drug therapy; D055598:Chemical Phenomena; D004337:Drug Carriers / Q000737:chemistry; D016503:Drug Delivery Systems; D004355:Drug Stability; D004965:Estrogen Antagonists / Q000008:administration & dosage; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D019344:Lactic Acid / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D050997:Nanomedicine; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D011100:Polyglycolic Acid / Q000737:chemistry; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D017550:Spectroscopy, Fourier Transform Infrared; D013629:Tamoxifen / Q000008:administration & dosage*
chemical_list: D004337:Drug Carriers; D004965:Estrogen Antagonists; D013629:Tamoxifen; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid