PMID- 18446610 OWN - NLM STAT- MEDLINE DCOM- 20080718 LR - 20191110 IS - 1061-186X (Print) IS - 1026-7158 (Linking) VI - 16 IP - 4 DP - 2008 May TI - Chloramphenicol-incorporated poly lactide-co-glycolide (PLGA) nanoparticles: formulation, characterization, technetium-99m labeling and biodistribution studies. PG - 311-20 LID - 10.1080/10611860801899300 [doi] AB - Chloramphenicol-loaded (CHL) poly-d,l-lactic-co-glycolic acid (PLGA) nanoparticles (NPs) were prepared by emulsification solvent evaporation technique either by using polyvinyl alcohol (PVA) as emulsion stabilizer or polysorbate-80 (PS-80) as surfactant and characterised by transmission electron microscopy, zeta-potential measurements. The NPs were radiolabeled with technetium-99m ((99m)Tc) by stannous reduction method. Labeling conditions were optimised to achieve high-labeling efficiency, in vitro and in vivo (serum) stability. The labeled complexes also showed very low transchelation as determined by DTPA challenge test. Biodistribution studies of (99m)Tc-labeled complexes were performed after intravenous administration in mice. The CHL-loaded PLGA NPs coated with PS-80 exhibited relatively high brain uptake with comparatively low accumulation in bone marrow to that of free drug and CHL-loaded PLGA NPs (PVA, used as emulsion stabilizer) at 24 h post injection time period. This indicates the usefulness of the above delivery system for prolonged use of the antibiotic. FAU - Halder, Kamal Krishna AU - Halder KK AD - Nuclear Medicine Division, Indian Institute of Chemical Biology, Kolkata, India. FAU - Mandal, Bivash AU - Mandal B FAU - Debnath, Mita Chatterjee AU - Debnath MC FAU - Bera, Hriday AU - Bera H FAU - Ghosh, Lakshmi Kanto AU - Ghosh LK FAU - Gupta, Bijon Kumar AU - Gupta BK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Drug Target JT - Journal of drug targeting JID - 9312476 RN - 0 (Anti-Bacterial Agents) RN - 0 (Chelating Agents) RN - 0 (Tin Compounds) RN - 1BQV3749L5 (stannous chloride) RN - 1SIA8062RS (Polylactic Acid-Polyglycolic Acid Copolymer) RN - 26009-03-0 (Polyglycolic Acid) RN - 33X04XA5AT (Lactic Acid) RN - 66974FR9Q1 (Chloramphenicol) RN - 7440-26-8 (Technetium) RN - 7A314HQM0I (Pentetic Acid) SB - IM MH - Animals MH - Anti-Bacterial Agents/administration & dosage/pharmacokinetics/*pharmacology MH - Chelating Agents/chemistry MH - Chemical Phenomena MH - Chemistry, Pharmaceutical MH - Chemistry, Physical MH - Chloramphenicol/administration & dosage/pharmacokinetics/*pharmacology MH - Drug Stability MH - Electrochemistry MH - Hydrogen-Ion Concentration MH - Injections, Intravenous MH - Isotope Labeling MH - Lactic Acid MH - Mice MH - Microscopy, Electron, Transmission MH - Nanoparticles MH - Pentetic Acid/chemistry MH - Polyglycolic Acid MH - Polylactic Acid-Polyglycolic Acid Copolymer MH - Technetium MH - Tin Compounds/chemistry MH - Tissue Distribution EDAT- 2008/05/01 09:00 MHDA- 2008/07/19 09:00 CRDT- 2008/05/01 09:00 PHST- 2008/05/01 09:00 [pubmed] PHST- 2008/07/19 09:00 [medline] PHST- 2008/05/01 09:00 [entrez] AID - 792747229 [pii] AID - 10.1080/10611860801899300 [doi] PST - ppublish SO - J Drug Target. 2008 May;16(4):311-20. doi: 10.1080/10611860801899300.