title: Prolonged retention and in vivo evaluation of cationic nanoparticles loaded with Mitomycin C designed for intravesical chemotherapy of bladder tumours.
abstract: To overcome the recurrence problem in bladder tumours; nanoparticles with positive surface charge may improve interaction with biological membranes for intravesical administration. The aim of this study was to design, develop and evaluate (in vitro-in vivo) cationic nanoparticles based on chitosan, poly-L-lysine or polycaprolactone for the effective intravesical delivery of chemotherapeutic agent MMC in a rat model. Poly-L-lysine-coated polycaprolactone nanoparticles and chitosan-coated polycaprolactone nanoparticles were prepared by the double emulsion technique. Chitosan nanoparticles were prepared by ionic gelation. It was found that nanoparticle formulations of 160-320 nm in size can be produced in 14-35% encapsulation efficiency. Variability in the particle size of nanoparticles depended on the preparation method. Encapsulation was increased by two-fold for CS-PCL as a result of the double emulsion technique. Commercial MMC product in solution form and cationic nanoparticle formulations were compared for in vivo bladder retention properties and effect of formulations on urine volume.
authors.affiliation: Faculty of Pharmacy, Department of Pharmaceutical Technology, Hacettepe University, 06100 Sıhhiye-Ankara, Turkey.
authors.forename: Nazlı
authors.initials: N
authors.lastname: Erdoğar
authors.forename: Alper B
authors.initials: AB
authors.lastname: Iskit
authors.forename: N Aydın
authors.initials: NA
authors.lastname: Mungan
authors.forename: Erem
authors.initials: E
authors.lastname: Bilensoy
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D048271:Chitosan / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D016503:Drug Delivery Systems; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D008297:Male; D016685:Mitomycin / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D053758:Nanoparticles / Q000737:chemistry*; D011091:Polyesters / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D011107:Polylysine / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley; D001749:Urinary Bladder Neoplasms / Q000188:drug therapy* / Q000473:pathology / Q000503:physiopathology
chemical_list: D000903:Antibiotics, Antineoplastic; D011091:Polyesters; C016240:polycaprolactone; D011107:Polylysine; D016685:Mitomycin; D048271:Chitosan