Cationic solid lipid nanoparticles interfere with the activity of antioxidant enzymes in hepatocellular carcinoma cells

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Doktorovova, S (Author) Other; Santos, DL (Author) Other; Costa, I (Author) Other; Andreani, T (Author) Other; Souto, EB (Author) Other; Silva, AM (Author) Other

Journal

Title: International Journal of Pharmaceutics

Vol. 471

Pages: 18-27

ISSN: 0378-5173

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 56 Citations

Scopus - 62 Citations

Other information

Authenticus ID: P-009-GZ7

DOI: 10.1016/j.ijpharm.2014.05.011

Abstract (EN): Solid lipid nanoparticles (SLN) are colloidal drug and/or gene carriers developed from solid lipids and surfactants that are considered safe. Cationic SLN, usually used for formulating poorly water-soluble drugs and for gene delivery purposes, as positively charged particles may attach to cellular surfaces and be internalized more easily than negatively charged SLN, but they can also cause damage. The main aim of this work was to test a set of cationic SLN and investigate its influence on the amount of reactive oxygen species (ROS), on antioxidant enzymes activities and on possible oxidative damage to membrane lipids in HepG2 cells. The Dichlorofluorescein assay revealed great increase in ROS presence after cell exposure to SLN. While the exposure to SLN increased the activities of superoxide dismutase and glutathione peroxidase it decreased glutathione reductase activity. Although no significant increase in thiobarbituric reactive species was found, a decrease in sulfhydryl groups was detected. These results indicate that cationic SLN caused oxidative stress in HepG2 cells, but under reported exposure conditions HepG2 cells could attenuate the stress and thus the damage to cellular components was minimal.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10