Design and characterization of nanocarriers loaded with Levofloxacin for enhanced antimicrobial activity; physicochemical properties, in vitro release and oral acute toxicity

  • Panoraia Siafaka Istanbul Medipol University, School of Pharmacy https://orcid.org/0000-0001-7256-3230
  • Mehmet Evren Okur University of Health Sciences, Faculty of Pharmacy
  • Şule Ayla Istanbul Medipol University, School of Medicine
  • Sevda Er Anadolu University, Yunus Emre Vocational School for Health Services
  • Emre Şefik Cağlar Istanbul Medipol University, School of Pharmacy
  • Neslihan Üstündağ Okur University of Health Sciences, Faculty of Pharmacy
Keywords: Carbon nanotubes, Santa barbara amorphous, Halloysite nanotubes, Levofloxacin, Toxicity, Antimicrobial

Abstract

Inorganic and carbon based nanomaterials are widely used against several diseases, such as cancer, autoimmune diseases as well as fungi and bacteria colonization. In this work, Santa Barbara Amorphous mesoporous silica (SBA), Halloysite Nanotubes (HNTs) and Multiwalled Carbon Nanotubes (CNTs) were loaded with fluoroquinolone Levofloxacin (LVF) to be applied as antimicrobial agents. The prepared via adsorption nanocarriers were characterized by Fourier-Transformed Spectroscopy, Scanning Electron Microscopy as well as High Pressure liquid Chromatography. In vitro release studies were carried out using Simulated Body Fluid at 37o C and data analyzed by various kinetic models showing slow dissolution over 12-24 hours. Antimicrobial studies showed improved antibacterial activity against Escherichia coli, Enterococcus faecalis, Listeria monocytogenes, Staphylococcus aureus, and Staphylococcus epidermidis compared to neat nanomaterials. CNTs were found to be the most promising candidates for LVF delivery and they were chosen to be further studied for their acute oral toxicity and histopathological examination using C57/Black mice. Histological examination depicted that drug loading did not affect mice organs morphology as well as hepatocyte degeneration, central vein degeneration and parenchymal necrosis scores. To conclude, the prepared nanomaterials present significant characteristics and can act as antimicrobial drug carriers; CNTs found to be safe candidates when orally fed to mice.

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Published
2019-11-29
How to Cite
Siafaka, P., Okur, M., Ayla, Şule, Er, S., Cağlar, E., & Okur, N. (2019). Design and characterization of nanocarriers loaded with Levofloxacin for enhanced antimicrobial activity; physicochemical properties, in vitro release and oral acute toxicity. Brazilian Journal of Pharmaceutical Sciences, 55, e18295. https://doi.org/10.1590/s2175-97902019000118295
Section
Articles