Oxaprozin-Loaded Lipid Nanoparticles towards Overcoming NSAIDs Side-Effects

Pharmaceutical Research
José Lopes-de-AraújoSalette Reis

Abstract

Nanostructured Lipid Carriers (NLCs) loading oxaprozin were developed to address an effective drug packaging and targeted delivery, improving the drug pharmacokinetics and pharmacodynamics properties and avoiding the local gastric side-effects. Macrophages actively phagocyte particles with sizes larger than 200 nm and, when activated, over-express folate beta receptors - features that in the case of this work constitute the basis for passive and active targeting strategies. Two formulations containing oxaprozin were developed: NLCs with and without folate functionalization. In order to target the macrophages folate receptors, a DSPE-PEG2000-FA conjugate was synthesized and added to the NLCs. These formulations presented a relatively low polydispersity index (approximately 0.2) with mean diameters greater than 200 nm and zeta potential inferior to -40 mV. The encapsulation efficiency of the particles was superior to 95% and the loading capacity was of 9%, approximately. The formulations retained the oxaprozin release in simulated gastric fluid (only around 10%) promoting its release on simulated intestinal fluid. MTT and LDH assays revealed that the formulations only presented cytotoxicity in Caco-2 cells for oxaprozin concentra...Continue Reading

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Citations

Oct 31, 2016·Advanced Drug Delivery Reviews·Zhong-Cheng MoGuang-Hui Yi
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Jun 23, 2021·Journal of Pain & Palliative Care Pharmacotherapy·Apoorva Phadke, Purnima Amin

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