Exploring the Substitution of Fe(III) by Gd(III) in Nanomagnetite.

A promising superparamagnetic nanomagnetite dipped with Gd was synthesized for possible medical applications. Its size and morphology are independent of Gd content ranging from 1 to 5%. Gadolinium (III) replaced Fe(III) in the lattice.

Impact of ultrasound process on cassava starch nanoparticles and Pickering emulsions stability.

Using green techniques to convert native starches into nanoparticles is an interesting approach to producing stabilizers for Pickering emulsions, aiming at highly stable emulsions in clean label products. Nanoprecipitation was used to prepare the Pickering starch nanoparticles, while ultrasound technique has been used to modulate the size of these nanoparticles at the same time as the emulsion was developed. Thus, the main objective of this study was to evaluate the stabilizing effect of cassava starch nanoparticles (SNP) produced by the nanoprecipitation technique combined with ultrasound treatment carried out in the presence of water and oil (more hydrophobic physicochemical environment), different from previous studies that carry out the mechanical treatment only in the presence of water.

[Metaplasic Paneth cells in ulcerative colitis].

Background: Paneth cells are normally present in small intestine, but its appearance in other areas of the gastrointestinal tract is related to chronic inflammatory processes.

Material And Methods: In our study we retrospectively examined 29 patients with diagnosis of ulcerative colitis, from the files of Instituto de Histopatología de Rosario, and from the casuistry of two authors (O.B.