Dosimetric assessment of the impact of low-cost materials used in stereolithography in high-dose-rate brachytherapy.

Purpose: 3D printing has become a popular and widely available technique of rapid prototyping. The impact of used materials on the dose distribution has been studied for high energy sources. However, brachytherapy sources emit lower energy photons, and materials used in 3D printing may differ.

The influence of selected NSAIDs on volume phase transition in poly(2-(2-methoxyethoxy)ethyl methacrylate) hydrogels.

Hydrogels exhibiting Volume Phase Transition (VPT) are considered as useful biomaterials for the preparation of various drug delivery systems. Such hydrogels are commonly based on thermo-responsive polymers, such as poly(2-(2-methoxyethoxy)ethyl methacrylate) (PMEOMA), that have lower critical solution temperature (LCST) in aqueous solutions. In this work, PMEOMA hydrogels were used as model systems to study the influence of encapsulated drugs, such as ibuprofen and salicylate sodium salts, on the temperature and dynamics of the VPT.

Hydrogels made from chitosan and silver nitrate.

This work describes a gelation of chitosan solution with silver nitrate. Above the critical concentration of chitosan (c*), continuous hydrogels of chitosan-silver can be formed. At lower concentrations, the formation of nano- and micro-hydrogels is discussed.

In vivo evaluation of nerve guidance channels of PTMC/PLLA porous biomaterial.

Introduction: Peripheral nerve disruptions, frequently occurring during limb injuries, give rise to serious complications of patients recovery resulting from limitations in neural tissue regeneration capabilities. To overcome this problem bridging techniques utilizing guidance channels gain their importance. Biodegradable polymeric tubes seem to be more prospective then non-degradable materials - no necessity of implant removal and possibilities of release of incorporated drugs or biologically active agents that may support nerve regeneration process are the main advantages.

Facile and durable antimicrobial finishing of cotton textiles using a silver salt and UV light.

In this study, we present facile antimicrobial finishing of cotton textiles. Screen printing was used for surface-finishing of cotton using a printing paste containing silver nitrate. UVC irradiation was applied to convert silver nitrate into a color product, thus also changing the color of the textiles.