Solid lipid nanoparticles (SLN) for topical drug delivery: incorporation of the lipophilic drugs N,N-diethyl-m-toluamide and vitamin K.
Solid lipid nanoparticles (SLN) for topical delivery were prepared by high pressure homogenization using solid lipids. The lipophilic agents DEET (N,N-diethyl-m-toluamide) and vitamin K were used as model drugs. These topical agents were incorporated into SLN which were characterized. Differential scanning calorimetry studies were performed in order to detect probable interactions in the SLN dispersions. Physical stability of SLN in aqueous dispersions and the effect of drug incorporation into SLN were investigated by photon correlation spectroscopy and zeta potential measurements. Characterization and short-term stability studies showedthat DEET and vitamin K are good candidates for topical SLN formulations.
Işcan
Y
Y
Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, TR-06100 Ankara, Turkey. yoncayi@yahoo.com
Wissing
S A
SA
Hekimoğlu
S
S
Müller
R H
RH
D000287:Administration, Topical; D002152:Calorimetry, Differential Scanning; D002626:Chemistry, Pharmaceutical; D003671:DEET / Q000008:administration & dosage* / Q000737:chemistry; D004304:Dosage Forms; D004355:Drug Stability; D004563:Electrochemistry; D006490:Hemostatics / Q000008:administration & dosage* / Q000737:chemistry; D007302:Insect Repellents / Q000008:administration & dosage* / Q000737:chemistry; D008055:Lipids / Q000737:chemistry; D049329:Nanostructures; D014812:Vitamin K / Q000008:administration & dosage* / Q000737:chemistry
D004304:Dosage Forms; D006490:Hemostatics; D007302:Insect Repellents; D008055:Lipids; D014812:Vitamin K; D003671:DEET