Preparation and characterization of nano amitriptyline hydrochloride particles by spray freeze drying

• Published in: Nanomedicine (London, England) Vol. 14; no. 12; pp. 1521 - 1531
• Main Authors: Hu, Yingjie, Ma, Chunyan, Sun, Mengxia, Guo, Changping, Shen, Jinpeng, Wang, Jun, Nie, Fude, Gao, Bing
• Format: Journal Article
• Language: English
• Published: England Future Medicine Ltd 01.06.2019
• Subjects: Adsorption; amitriptyline hydrochloride; Antidepressants; Bioavailability; Brain research; Cellulose; Drug delivery systems; Drug overdose; evaluation; Investigations; Methods; Morphology; Nanocrystals; Nanoparticles; Nanotechnology; Particle size; spray freeze drying; evaluation; antidepressants; bioavailability; spray freeze drying; amitriptyline hydrochloride; nanocrystals
• ISSN: 1743-5889; 1748-6963
• DOI: 10.2217/nnm-2018-0116

To investigate the enhancement of bioavailability by the usage of drug nanoparticles for increasing the efficacy of antidepressant therapeutic value. Nano-amitriptyline HCI (AMT·HCl) particles were successfully prepared via a simple spray freeze drying (SFD) method. The as-prepared nanoparticles are amorphous instead of crystalline. The mean size of AMT·HCl nanoparticles is 90 nm. In evaluation, AMT·HCl nanoparticles have greatly improved the dissolution compared with pure bulk materials, which have potential for enhancing human bioavailability and diminishing toxic effect. A nanoparticle formation mechanism was also proposed. These findings promote the development of antidepressant therapeutic evaluation based on the usage of AMT·HCl nanoparticles by SFD method and indicate that SFD is an alternative for a range of nanoparticle preparation in industrial pharmacy.