4.7 Article

Biodistribution and toxicity of orally administered poly(lactic-co-glycolic) acid nanoparticles to F344 rats for 21 days

Journal

NANOMEDICINE
Volume 11, Issue 13, Pages 1653-1669

Publisher

FUTURE MEDICINE LTD
DOI: 10.2217/nnm-2016-0022

Keywords

biodistribution; nanoparticles; toxicity

Funding

  1. Increasing Scientific Data on the Fate, Transport and Behavior of Engineered Nanomaterials in Selected Environmental and Biological Matrices
  2. EPA-G2010-STAR-N2 Food Matrices Award [2010-05269]

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Aim: Quantify the biodistribution and assess the toxicity of PLGA (poly-lactic-co-glycolic acid) and surface-modified PLGA chitosan (PLGA/Chi) nanoparticles (NPs) orally administered for 7, 14 and 21 days to F344 rats. Materials & methods: Fluorescent NPs were tracked in F344 rat tissues, and toxicity was evaluated by alkaline phosphatase and alanine transaminase levels, and by histologic examination of tissue samples. Results: Biodistribution of PLGA and PLGA/Chi were similar, with highest amounts found in the intestine and liver. Alkaline phosphatase increased significantly in treated rats. Mild histological differences were detected in the intestine and liver. Conclusion: PLGA and PLGA/Chi NPs behaved similarly presenting minimal toxicity in the liver and intestine, but not in kidney, lung and brain.

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