“…Several studies compared SLN and NLC gels (IN) and plain SLN and NLC suspensions (IN). A recent study compared a piribedil-loaded SLN suspension and piribedil-loaded SLN gel, and found the brain bioavailability (AUC 0–6h,brain ) and mean brain residence time (MRT brain ) of the SLN gel were 1.29- and 1.40-fold greater than those of the SLN suspension, respectively [ 27 ]. Furthermore, the DTE%, DTP%, logRDTE%, B% IN/IV , and RB% values of the SLN gel (IN) were 137.5, 27.29, 2.40, 145.3, and 404.5, higher than those of the SLN suspension (IN) (119.9, 16.59, 2.34, 112.3, and 312.6, respectively).…”