PAZ BÁÑEZ , María Violante De

NMR, ATR-FTIR and Mass Spectra of small molecules and monomers: {1-[3,5-bis(trifluoromethyl)phenyl]-3-cyclohexylthiourea} (TU) 1H NMR, COSY, 13C NMR, HSQC, ATR-FTIR, ESI-MS 3-(Prop-2-yn-1-ylthio)-propane-1,2-diol (1) 1H NMR, COSY, 13C NMR, HSQC, ATR-FTIR, ESI-MS, ESI-HRMS 4-[(Prop-2-yn-1-ylthio)methyl]-1,3-dioxolan-2-one (2) ...

La industria de los polímeros comenzó a desarrollarse en el siglo XIX basándose en la modificación de ciertos polímeros naturales, por ejemplo, algunos hidratos de carbono como el almidón, la celulosa y la caseína, que fueron finalmente sustituidos por ot

Even though general improvement of quality of life has happened around the globe, statistics show that gastric cancer is still a very serious medical concern in some regions of the world. A big portion of malignant neoplasms that develop inside the stomach are linked to an infection of Helicobacter pylori; in fact, this pathogen has already...

Thiomers (or thiolated polymers) have broken through as avant-garde approaches in anticancer therapy. Their distinguished reactivity and properties, closely linked to their final applications, justify the extensive research conducted on their preparation and use as smart drug-delivery systems (DDSs). Multiple studies have demonstrated that...

Las nuevas normativas que la Legislación impone relativas a los hábitos saludables y de seguridad que deben cumplirse en los laboratorios, han supuesto una revolución muy positiva en estos entornos de trabajo. Estos cambios están siendo posibles, gracias a la introducción de mejores infraestructuras, que están posibilitando al investigador la...

Ministerio de Economía y Competitividad MAT2012- 38044-C03-01

Composting could be a suitable solution to the correct treatment and hygienization of several organic waste, producing compost that can be used in agriculture. The evolution and maturity of this process has been studied using a variety of techniques. One very promising technique for these studies is thermogravimetric analysis. On the other...

Oxidative stress is known to be a key factor in many neurodegenerative diseases. Inflammation also plays a relevant role in a myriad of pathologies such as diabetes and atherosclerosis. Polyphenols coming from dietary sources, such as pterostilbene, may be beneficial in this type of diseases. However, most of them are rapidly metabolized and...

A simple redox amphiphilic tri-block copolyurethane capable of assembling in the form of polymersome has been easily synthesized. Thus, the hydrophobic core is constituted by a central block containing multiple disulfide linkages, and the hydrophilic segments are formed by poly(ethylene glycol) methyl ether (mPEG2000). The disulfide-containing...

The present work deals with the synthesis of micro-structured biomaterials based on chitosan (CTS) for their applications as biocompatible carriers of drugs and bioactive compounds. Twelve dispersions were prepared by means of functional cross-linking with tricarballylic acid (TCA); they were characterized by Fourier transform infrared...

Metal-free catalysis was successfully applied to polymerize ω-pentadecalactone (PDL) by ring-opening polymerization (ROP) using several amino-ended initiators, namely hexylamine, allylamine and O,O′-bis(3-aminopropyl)diethylene glycol. This polymerization method was suitable to prepare telechelic polyesters carrying functional-end groups. The...

Micelles are excellent devices to be used as controlled drug delivery systems since they exhibit the ability to protect the drug or encapsulated substance from the routes of degradation until they reach the site of action: moreover, they can pass through biological barriers and reach intracellular compartments. In addition, when a drug is...

La presente invención se refiere a conjugados del chitosan (o sus derivados) con tiolactonas (síntesis y estructuras químicas), en las composiciones cosméticas, biomédicas-farmacéuticas que contienen dichos conjugados, y a sus aplicaciones, que presentan las siguientes propiedades: no tóxicos, biodegradables, con excelentes propiedades de...

Iminosugars are carbohydrate mimetics that constitute the main group of oligosaccharide processing enzyme inhibitors. They play an important role in cell-cell recognition processes, thereby presenting a wide range of potential therapeutic applications. In this work, we present the first examples of glycopolymers containing five-membered...

A batch of linear [m,n]-type sugar-based polyureas was synthesized by polyaddition reaction in solution from hexamethylene diisocyanate or 4,4'-methylene-bis(phenyl isocyanate) with the acyclic 2,3,4-tri-O-methyl-1,5- diamino-alditols having L-arabino, or xylo confi guration or the bicyclic...

In the present work, we demonstrate the preparation of chitosan-based composites as vehicles of the natural occurring multi-drug resveratrol (RES). Such systems are endowed with potential therapeutic effects on inflammatory bowel diseases (IBD), such as Crohn's disease (CD) and ulcerative colitis, through the sustained colonic release of RES...

The efficient, controlled polymerization of a batch of new poly(hydroxyethyl methacrylate-co-furfuryl methacrylate)s, [poly(HEMA-co-FMA)], of various compositions was achieved using atom transfer radical polymerization (ATRP) in methanol. When the FMA composition did not exceed the 10 mol% ratio, the evolution of molecular weight with...