Production of aprepitant nanocrystals by wet media milling and subsequent solidification.

Clicks: 351
ID: 80415
2017
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #27 of 245 articles by views in International journal of pharmaceutics

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 245 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
The present study investigates the effects of formulation and process parameters on the production of aprepitant nanosuspensions applying wet media milling and subsequent solidification. Six stabilizers were used: two brands of hydroxylpropylmethyl cellulose (HPMC E-15LV and Pharmacoat 603), hydroxypropyl cellulose (HPC-SSL), polyvinylpyrollidone (PVP), D-α-Tocopherol polyethylene glycol 1000 succinate (TPGS 1000), Poloxamer P188 and sodium dodecyl sulfate (SDS), while two diluents (mannitol and sucrose) were incorporated prior to solidification by two methods (spray- and freeze-drying). The polymorphic purity of the raw material, the particle size of nanocrystals, and the physicochemical properties of the final dried powders were assessed. Focus was placed on the energetic aspects of the crystal structure of aprepitant in order to rationalize particle breakage during wet milling. It was found that a combination of cellulosic polymers with SDS are suitable stabilizers for the production of aprepitant nanocrystals (∼300nm or smaller) by wet media milling. Regarding the solidification of the nanosuspensions, spray-drying is advantageous compared to freeze-drying, as it leads to the production of almost spherical individual micron-sized agglomerates of nanocrystals and few secondary agglomerates of them which are expected to exhibit improved handling behavior. Spray-dried nanocrystal agglomerates containing Pharmacoat 603 and mannitol exhibit reduced hygroscopity compared to those prepared with sucrose and HPC-SSL, making them the excipients of choice.
Reference Key
toziopoulou2017productioninternational Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Toziopoulou, F;Malamatari, M;Nikolakakis, I;Kachrimanis, K;
Journal International journal of pharmaceutics
Year 2017
DOI
S0378-5173(17)30164-3
URL
Keywords
nanocrystals freeze-drying spray-drying aprepitant crystal polymorphism nanosuspensions stabilizers wet media milling

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.