PMID- 16386861 OWN - NLM STAT- MEDLINE DCOM- 20060420 LR - 20181203 IS - 0378-5173 (Print) IS - 0378-5173 (Linking) VI - 308 IP - 1-2 DP - 2006 Feb 3 TI - Polymeric nanoparticulate delivery system for Indocyanine green: biodistribution in healthy mice. PG - 200-4 AB - The objective of this study is to investigate the biodistribution of Indocyanine green (ICG) in healthy mice, when delivered through polymeric nanoparticles. The poly(DL-lactic-co-glycolic acid) (PLGA) nanoparticles entrapping ICG were engineered and characterized. The extraction method for ICG recovery from biological samples was developed. The biodistribution of ICG was determined in healthy C57BL/6 mice (female, 10-week old) when delivered through PLGA nanoparticles in comparison to free ICG solution, using a fluorometric assay method. The extraction method for ICG shows efficiency above 80% for various organs and plasma. When nanoparticles were used to deliver ICG, 2-8 times higher concentrations of ICG was deposited in various organs, with 5-10 times higher plasma levels till 4 h, after an i.v. dose as compared to free ICG solution. In conclusion, the nanoparticle formulation significantly increased the ICG concentration and circulation time in plasma as well as the ICG uptake, accumulation and retention in various organs. Overall, this study represents the first step in exploring and establishing the potential of nanoparticles as an ICG-delivery system for use in tumor-diagnosis and photodynamic therapy. FAU - Saxena, Vishal AU - Saxena V AD - Department of Pharmacy and Administrative Sciences, College of Pharmacy and Allied Health Professions, St. John's University, 8000 Utopia Parkway, Jamaica, NY 11439, USA. FAU - Sadoqi, Mostafa AU - Sadoqi M FAU - Shao, Jun AU - Shao J LA - eng PT - Comparative Study PT - Journal Article PL - Netherlands TA - Int J Pharm JT - International journal of pharmaceutics JID - 7804127 RN - 0 (Coloring Agents) RN - 0 (Glycolates) RN - 0 (Polymers) RN - 1SIA8062RS (Polylactic Acid-Polyglycolic Acid Copolymer) RN - 26009-03-0 (Polyglycolic Acid) RN - 33X04XA5AT (Lactic Acid) RN - IX6J1063HV (Indocyanine Green) SB - IM MH - Animals MH - Coloring Agents/administration & dosage/analysis/pharmacokinetics MH - *Drug Delivery Systems MH - Female MH - Glycolates/*chemistry MH - Indocyanine Green/administration & dosage/analysis/*pharmacokinetics MH - Injections, Intravenous MH - Lactic Acid MH - Mice MH - Mice, Inbred C57BL MH - *Nanostructures MH - Polyglycolic Acid MH - Polylactic Acid-Polyglycolic Acid Copolymer MH - Polymers/*chemistry MH - Reproducibility of Results MH - Spectrometry, Fluorescence MH - Tissue Distribution EDAT- 2006/01/03 09:00 MHDA- 2006/04/21 09:00 CRDT- 2006/01/03 09:00 PHST- 2005/06/10 00:00 [received] PHST- 2005/11/04 00:00 [revised] PHST- 2005/11/09 00:00 [accepted] PHST- 2006/01/03 09:00 [pubmed] PHST- 2006/04/21 09:00 [medline] PHST- 2006/01/03 09:00 [entrez] AID - S0378-5173(05)00748-9 [pii] AID - 10.1016/j.ijpharm.2005.11.003 [doi] PST - ppublish SO - Int J Pharm. 2006 Feb 3;308(1-2):200-4. doi: 10.1016/j.ijpharm.2005.11.003.