Self-Assembled Lecithin-Chitosan Nanoparticles Improved Rotigotine Nose-to-Brain Delivery and Brain Targeting Efficiency

• Published in: Pharmaceutics Vol. 15; no. 3; p. 851
• Main Authors: Saha, Paramita, Singh, Prabhjeet, Kathuria, Himanshu, Chitkara, Deepak, Pandey, Murali Monohar
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.03.2023; MDPI
• Subjects: Alzheimer's disease; Analysis; Antiparkinsonian agents; Bioavailability; Blood-brain barrier; brain distribution study; Brain research; Dopamine; Dosage and administration; Drug therapy; Drugs; Efficiency; Health aspects; intranasal delivery; Laboratories; Lecithin; lecithin-chitosan hybrid nanoparticles; Metabolism; Nanoparticles; Nose; nose-to-brain uptake; Parkinson's disease; Particle size; Patient outcomes; Permeability; rotigotine; Solvents; India; Mumbai India; United States > US; Germany; intranasal delivery; lecithin-chitosan hybrid nanoparticles; rotigotine; nose-to-brain uptake; brain distribution study
• ISSN: 1999-4923; 1999-4923
• DOI: 10.3390/pharmaceutics15030851

Rotigotine (RTG) is a non-ergoline dopamine agonist and an approved drug for treating Parkinson's disease. However, its clinical use is limited due to various problems, viz. poor oral bioavailability (<1%), low aqueous solubility, and extensive first-pass metabolism. In this study, rotigotine-loaded lecithin-chitosan nanoparticles (RTG-LCNP) were formulated to enhance its nose-to-brain delivery. RTG-LCNP was prepared by self-assembly of chitosan and lecithin due to ionic interactions. The optimized RTG-LCNP had an average diameter of 108 nm with 14.43 ± 2.77% drug loading. RTG-LCNP exhibited spherical morphology and good storage stability. Intranasal RTG-LCNP improved the brain availability of RTG by 7.86 fold with a 3.84-fold increase in the peak brain drug concentration (C ) compared to intranasal drug suspensions. Further, the intranasal RTG-LCNP significantly reduced the peak plasma drug concentration (C ) compared to intranasal RTG suspensions. The direct drug transport percentage (DTP (%)) of optimized RTG-LCNP was found to be 97.3%, which shows effective direct nose-to-brain drug uptake and good targeting efficiency. In conclusion, RTG-LCNP enhanced drug brain availability, showing the potential for clinical application.