07. June 2018
Asthma is a chronic respiratory condition characterized by attacks of spasm in the bronchi of the lungs, causing difficulty in breathing. Oral and inhalation routes are generally used for the treatment of asthma. Terbutaline sulfate (TBS), is a widely used bronchodilator for the treatment of asthma, is available in formulations in the market. However, there is no commercially available orally disintegrating tablets (ODTs) containing TBS. Therefore, this study was aimed to develop and...
16. September 2017
Abstract We aimed to understand the factors controlling mechanical particle coating using polymethacrylate. The relationship between coating performance and the characteristics of polymethacrylate powders was investigated. First, theophylline crystals were treated using a mechanical powder processor to obtain theophylline spheres (<100 μm). Second, five polymethacrylate latexes were powdered by spray freeze drying to produce colloidal agglomerates. Finally, mechanical particle coating was...
17. November 2016
Abstract The use of nanoparticles for drug delivery is still restricted by their limited stability when stored in an aqueous medium. Freeze drying is the standard method for long-term storage of colloidal nanoparticles; however the method needs to be elaborated for each formulation. Spray freeze drying (SFD) is proposed here as a promising alternative for lyophilizing colloidal nanoparticles. Different types of polymeric and lipid nanoparticles were prepared and characterized. Afterwards,...
08. August 2016
Abstract Previously, it was shown in Phase I clinical trials that solubility-limited oral absorption of docetaxel and paclitaxel can be drastically improved with a freeze dried solid dispersion (fdSD). These formulations, however, are unfavorable for further clinical research because of limitations in amorphicity of SD and scalability of the production process. To resolve this, a spray drying method for an SD (spSD) containing docetaxel or paclitaxel and subsequently drug products were...
25. May 2016
Abstract: The nasal route receives a great deal of attention as a non-invasive method for the systemic administration of drugs. For nasal delivery, specific formulations containing excipients are used. Because of the sensitive respiratory mucosa, not only the active ingredients, but also additives need to be tested in appropriate models for toxicity. The aim of the study was to measure the cytotoxicity of six pharmaceutical excipients, which could help to reach larger residence time, better...
21. March 2016
Background: Quince seed mucilage biopolymer (QSMB), famous for ameliorating coughs and controlling asthma symptoms, has not been processed by scientific methods and rules into a local oral tablet. Objectives: The purpose of this study was to investigate and compare the mechanical properties of QSMB with different size fractions of the mucilage powder, dried by oven or by freeze drying, to achieve a tablet. Materials and Methods: The granules dried by oven and freezing processes were classified...