title: Inclusion complexes of chloramphenicol with β-cyclodextrin and aminoacids as a way to increase drug solubility and modulate ROS production.
abstract: The aim of this study was to improve the solubility of chloramphenicol and reduce the production of reactive oxygen species (ROS) in leucocytes induced by this drug, using complexation. Multicomponent complexes were prepared by the addition of β-cyclodextrin with glycine or cysteine. Nuclear magnetic resonance and phase solubility studies provided information at the molecular level on the structure of the complexes and their association binding constants, respectively. In the solid state, all systems were extensively characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, thermal analysis and X-ray powder diffraction. Antimicrobial activity of inclusion complexes was investigated by agar diffusion methods. Finally ROS determination by chemiluminescence was used to investigate the effect of complex formation on the potential toxicity in human leucocytes. These studies revealed that multicomponent complexes can increase the aqueous solubility of chloramphenicol as well as reducing the stress by ROS production in leucocytes and maintaining its microbiological activity.
authors: Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina; Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA), CONICET, Universidad Nacional de Córdoba, Córdoba, Argentina. Electronic address: aiassa@fcq.unc.edu.ar.
authors: Virginia
authors: V
authors: Aiassa
authors: Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina; Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA), CONICET, Universidad Nacional de Córdoba, Córdoba, Argentina. Electronic address: ariana@fcq.unc.edu.ar.
authors: Ariana
authors: A
authors: Zoppi
authors: Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina. Electronic address: inesalbesa@fcq.unc.edu.ar.
authors: Inés
authors: I
authors: Albesa
authors: Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina; Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA), CONICET, Universidad Nacional de Córdoba, Córdoba, Argentina. Electronic address: mrlcor@fcq.unc.edu.ar.
authors: Marcela R
authors: MR
authors: Longhi
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000009:adverse effects / Q000737:chemistry* / Q000494:pharmacology; D002701:Chloramphenicol / Q000009:adverse effects / Q000737:chemistry* / Q000494:pharmacology; D006801:Humans; D007962:Leukocytes / Q000187:drug effects / Q000378:metabolism; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D017382:Reactive Oxygen Species / Q000378:metabolism; D012995:Solubility; D013211:Staphylococcus aureus / Q000187:drug effects; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D000900:Anti-Bacterial Agents; D017382:Reactive Oxygen Species; D047392:beta-Cyclodextrins; D002701:Chloramphenicol; C031215:betadex
keywords: Chloramphenicol; Complex characterization; Microbiological activity; Multicomponent complexes; ROS production; Solubility