Dexketoprofen trometamol loaded solid lipid nanoparticles (SLNs): Formulation, in vitro and in vivo evaluation

Development, in vitro and in vivo evaluation of dexketoprofen trometamol (DT)-loaded nanosized drug delivery system was aimed in this study. DT-loaded solid lipid nanoparticles (SLNs) were prepared using probe sonication. DT release from SLNs prepared and their kinetics were investigated. Structures of SLNs were elucidated by particle size and zeta potential measurements, shape and surface imaging, thermal analysis, X-ray diffraction, FT-IR and H-1-NMR determinations. DT-loaded particles demonstrated characteristic plaque shapes while in vitro release studies showed extended release of DT. Korsmeyer-Peppas kinetic model was found to fit the best using DDSolver software program. Stability, cytotoxicity and in vivo animal experiments were further performed on DT-loaded SLN showing also prolonged analgesic activity in mice. Depending on the in vitro and in vivo test results, formulation developed in this study seems to prolong DT release and is promising for extending analgesic activity.