MatrigelBD, Un Andamiaje Biocompatible que Estimula la Proliferación de Celulas Troncales Mesenquimales Derivadas del Tejido Gingival.

MatrigelBD is a hydrogel scaffold with three-dimensional intercrossed networks of hydrophilic polymers with high water content. Human gingival tissue might represent a better source of MSCs, allowing these cells to be easily obtained in a relatively non-invasive way. The objective of this study was to evaluate the biocompatibility of MatrigelBD with GMSCs in vitro. Gingival connective tissue samples were obtained from healthy donors. Fresh tissue was minced and cultured during two weeks, after which cells at passage fourth were analyzed for their immune phenotype by flow cytometry. Differentiation into osteogenic, chondrogenic, and adipogenic lineages was induced and evaluated by culture staining. The "construct" was made of MatrigelBD with GMSC. To assess the biocompatibility, an MTT cellular proliferation assay was performed. The differentiation potential of the cells toward the osteogenic, adipogenic, and chondrogenic lineages was analyzed after 21 days of growth in MatrigelBD with induction differentiation media. The MTT analysis showed that MatrigelBD stimulated cell proliferation; the GMSCs maintained the expression of MSC markers. Importantly, the growth of GMSCs within the MatrigelBD did not interfere with the cell differentiation potential. These findings indicate that MatrigelBD is biocompatible with GMSCs, and this matrix improves cell proliferation in vitro.publishedVersio

Estimation of Organic Matter Digestibility and Intake from Faecal Organic Matter and Daily N Excretion and Concentration

This study was performed with grazing sheep, to establish: a) if the amount of total faecal N (C; in g 100g-1 of organic matter intake (OMI)) remains constant at three feeding levels, in four utilisation periods of deferred Panicum coloratum cv. Verde; b) the relationship between C and faecal N fractions, and c) the relationship between faecal daily excretion of OM and N, and OMI. Intake increased (P\u3c 0.01) with utilisation period, and was related (r = - 0.82; P\u3c 0.01) to the protein content of food, the insoluble N fraction (r = -0.49; P\u3c 0.01) and the soluble:insoluble N ratio (r = 0.41; P\u3c 0.01) in faeces. No relation with total N concentration (r = -0.22; P\u3e 0.05) or soluble N fraction (r = -0.02; P\u3e 0.05) in faeces could be found. Daily excretion of OM and N were positively related (R2 = 0.93 and 0.96, respectively; P\u3c 0.01) to OMI. The slopes of regression lines, but not the intercepts, were different (P\u3c 0.01) between evaluation periods. The digestibility can be estimated from OMI and faecal N whenever time of the year is taken into consideration

Intake Estimation of Rams under Grazing Condition in a Deferred Pastures of \u3ci\u3ePanicum coloratum\u3c/i\u3e by Two Techniques

The goal of this study was to quantify the organic matter intake (OMI) of Pampinta rams grazing in a Panicum coloratum cv Verde differed pasture. The OMI was compared by two methods: a) the difference between the forage measured in pre and post-grazing condition, and b) the faecal production:digestibility ratio of the diet, estimated by total faecal gathering, and from the quantity of total faecal N in g per 100 g-1 of OMI and the concentration of total faecal N, respectively. The OMI estimated by difference between the forage measured in pre and post-grazing was 9 % higher (P\u3c 0,05) than the one estimated from total faecal gathering and OMD. Interaction was not detected (P\u3e 0,10) between treatments (length of the deferment period) and estimation method. The use of the faecal N can be utilized, considering the time of the year, to estimate the OMD and OMI in grazing condition in P. coloratum deferred pastures

Development of poly (lactic-co-glycolic acid)/bioglass fibers using an electrospinning technique.

This work establishes experimental conditions for the synthesis of polymeric fibers using the electrospinning technique, modifying some operational parameters such as drum collector rotation speed and applied voltage were modified. The samples were obtained from a copolymer of poly(lactic-co-glycolic acid) (PLGA), with a molecular weight of approximately 220,000 g/mol, dissolved in a dimethyl sulfoxide/dichloromethane (3:1 v/v) solution. With the aim of developing scaffolds for bone tissue engineering, we added a calcium phosphate glass based on 44.5Ca0-44.5P2O5-11Na2O to the fibrous PLGA structures. The preliminary characterization of these PLGA structures with and without the addition of biodegradable glass was performed using SEM analysis. We found the formation of aligned and homogeneous fibers with an average diameter of 5.2 ± 2.1 µm when using the 800 rpm - 8cm - 9 kV parameters. In addition, the incorporation of 1 wt% of previously silanized calcium phosphate particles substantially altered the fiber morphology and porosity. However, a substantial increase in the bioactivity of the composite was observed in contrast with the unmodified PLGA

Valoración del cumplimiento de los tratamientos hipoglucemiantes y antihipertensivos en Galicia (‘CumpleGa’)

Objetivo: Evaluar en las farmacias comunitarias (FC) gallegas la prevalencia de la no adherencia terapéutica en diabetes e hipertensión arterial, identificando factores relacionados con el incumplimiento y la percepción de los pacientes sobre su tratamiento.Métodos: Estudio transversal descriptivo, aleatorizado, realizado en agosto y septiembre de 2016. Se seleccionaron pacientes mayores de edad, en tratamiento con hipoglucemiantes y/o antihipertensivos que llevaban al menos dos meses con la misma pauta terapéutica. Se midió el incumplimiento mediante la administración de tres cuestionarios: Batalla, Haynes-Sacket y Morisky-Green, en una hoja de recogida de datos que incluía los tres, además de las características demográficas de los pacientes.Resultados: Participaron 31 FC en 27 farmacias, que  recogieron 1.588 (muestra necesaria: 1.537) cuestionarios válidos: 778 (49,0%) mujeres y 810 (51,0%) hombres, de edad media 67,6±11,1 años. El número de pacientes incumplidores al menos en uno de los tres tests fue de 1.245 (78,4%). El incumplimiento medio resultó del 42,6%. La percepción de los pacientes sobre su tratamiento fue negativa en el 35,6%. El 51,0% desconoce las complicaciones de su enfermedad, el 33,1% olvida tomar su medicación y el 29,5% no cree que los medicamentos que tienen prescritos sean los adecuados.Conclusiones: El incumplimiento de las pautas terapéuticas de DM y HTA en Galicia es elevado, afectando casi a la mitad de los pacientes.Mal conocimiento sobre la enfermedad, menor nivel de estudios, polimedicación, situación pensionista (mayor edad) y percepción negativa sobre sus medicamentos parecen relacionarse con una peor prevalencia del incumplimiento de los tratamientos

The convergence method to calculate particles fluxes in x rays spectrometry techniques. Application in nuclear compounds

A method to calculate particle fluxes applicable in most of the spectroscopy techniques is described. Flux intensities of backscattered or absorbed electrons and emitted photons are calculated using a method of convergence to solve the Invariant Embedding equations that are used to describe the particle trajectories inside a solid sample. Our results are found to be helpful to carry out a procedure for quantitative characterization using instrument such as Electron Probe Microanalysis or other probes. Examples of application to calculate the composition of ternary alloys are given and are compared with the same calculations using another procedure.Comment: 15 page

Loop Quantum Cosmology: A Status Report

The goal of this article is to provide an overview of the current state of the art in loop quantum cosmology for three sets of audiences: young researchers interested in entering this area; the quantum gravity community in general; and, cosmologists who wish to apply loop quantum cosmology to probe modifications in the standard paradigm of the early universe. An effort has been made to streamline the material so that, as described at the end of section I, each of these communities can read only the sections they are most interested in, without a loss of continuity.Comment: 138 pages, 15 figures. Invited Topical Review, To appear in Classical and Quantum Gravity. Typos corrected, clarifications and references adde

Quantization of Midisuperspace Models

We give a comprehensive review of the quantization of midisuperspace models. Though the main focus of the paper is on quantum aspects, we also provide an introduction to several classical points related to the definition of these models. We cover some important issues, in particular, the use of the principle of symmetric criticality as a very useful tool to obtain the required Hamiltonian formulations. Two main types of reductions are discussed: those involving metrics with two Killing vector fields and spherically symmetric models. We also review the more general models obtained by coupling matter fields to these systems. Throughout the paper we give separate discussions for standard quantizations using geometrodynamical variables and those relying on loop quantum gravity inspired methods.Comment: To appear in Living Review in Relativit

Collective mapping: participatory approaches to community health-disease-care process

La atención primaria de la salud renovada entiende a la salud como un derecho que busca la construcción de la ciudadanía a través de la participación comunitaria (De Lellis, 2015). Esto genera un desafío en lo que respecta a los modos de trabajar en conjunto con las poblaciones ya que exige nuevas modalidades de trabajo conjunto tanto en la identificación de necesidades como en la gestión del sistema de salud. El reconocimiento del lugar en donde se desarrolla la vida cotidiana es indispensable para identificar los espacios y los modos de vida que se desenvuelven en los territorios, para así tener un acercamiento a los procesos de salud-enfermedad- atención de las comunidades. El mapeo colectivo es una técnica que permite visibilizar hábitos y espacios importantes donde transcurre la vida cotidiana de los y las diferentes actores a partir de la identificación y reconocimiento del barrio desde las representaciones sociales de los y las participantes del mismo

Valoración de los ángulos del cuello del aneurisma de aorta abdominal. Estudio en 507 pacientes

Angulation in different planes of the neck of abdominal aortic aneurysms may be considered a limiting factor in the implantation of different prostheses in the treatment of this pathology. It is necessary to make an assessment of the angles in different planes in routine studies prior to the planning of the procedures and especially by AngioTAC. The study evaluated the measurement of 507 patients with abdominal aortic aneurysms and treated endovascular procedures and of whom the complete information was available at the level of neck angulations. In a prospective and descriptive study the situation of this aortic sector was evaluated, contributing information about the tendency in the morphological presentation of the aorta in patients with this aetiolog