Formulation development of itraconazole PEGylated nano-lipid carriers for pulmonary aspergillosis using hot-melt extrusion technology

• Published in: International Journal of Pharmaceutics: X
• Main Authors: Gauri Shadambikar, Sushrut Marathe, Nan Ji, Mashan Almutairi, Suresh Bandari, Feng Zhang, Mahavir Chougule, Michael Repka
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2021
• Subjects: Itraconazole; PEGylation; Hot-melt extrusion; Pulmonary drug delivery; Inhalation; Nanostructured lipid carriers; Pharmacy and materia medica; RS1-441; sami
• Online Access: https://doi.org/10.1016/j.ijpx.2021.100074; https://doaj.org/article/976cb0ee04e84701b828b8aaae3ada87

Pulmonary delivery is a promising alternative for the oral treatment of pulmonary aspergillosis. This study aimed to develop continuous and scalable itraconazole PEGylated nano-lipid carriers (ITZ-PEG-NLC) for inhalation delivery. The feasibility of preparing NLCs utilizing hot-melt extrusion (HME) coupled with probe sonication was investigated. The process parameters for HME and sonication were varied to optimize the formulation. ITZ-PEG-NLC (particle size, 101.20 ± 1.69 nm; polydispersity index, 0.26 ± 0.01) was successfully formulated. The drug entrapment efficiency of ITZ-PEG-NLC was 97.28 ± 0.50%. Transmission electron microscopy was used to characterize the shape of the particles. The developed formulations were evaluated for their aerodynamic properties for pulmonary delivery. The lung deposition of ITZ-PEG-NLC was determined using an Anderson Cascade Impactor and Philips Respironics Sami the Seal Nebulizer Compressor. In vitro cytotoxicity studies were performed using A549 cells. A burst-release pattern was observed in ITZ-PEG-NLC with a drug release of 41.74 ± 1.49% in 60 min. The in vitro aerosolization of the ITZ-PEG-NLC formulation showed a mass median aerodynamic diameter of 3.51 ± 0.28 μm and a geometric standard deviation of 2.44 ± 0.49. These findings indicate that HME technology could be used for the production of continuous scalable ITZ-PEG-NLC.