Effect of indirect composite treatment microtensile bond strength of self-adhesive resin cements

Background: No specific indications about the pre-treatment of indirect composite restorations is provided by the manufacturers of most self-adhesive resin cements. The potential effect of silane treatment to the bond strength of the complete tooth/indirect restoration complex is not available.The aim of this study was to determine the contribution of different surface treatments on microtensile bond strength of composite overlays to dentin using several self-adhesive resin cements and a total-etch one. Material and Methods: Composite overlays were fabricated and bonding surfaces were airborne-particle abraded and randomly assigned to two different surface treatments: no treatment or silane application (RelyX Ceramic Primer) followed by an adhesive (Adper Scotchbond 1 XT). Composite overlays were luted to flat dentin surfaces using the following self-adhesive resin cements: RelyX Unicem, G-Cem, Speedcem, Maxcem Elite or Smartcem2, and the total-etch resin cement RelyX ARC. After 24 h, bonded specimens were cut into sticks 1 mm thick and stressed in tension until failure. Two-way ANOVA and SNK tests were applied at α=0.05. Results: Bond strength values were significantly influenced by the resin cement used ( p <0.001). However, composite surface treatment and the interaction between the resin cement applied and surface treatment did not significantly affect dentin bond strength ( p >0.05). All self-adhesive resin cements showed lower bond strength values than the total-etch RelyX ARC. Among self-adhesive resin cements, RelyX Unicem and G-Cem attained statistically higher bond strength values. Smartcem2 and Maxcem Elite exhibited 80-90% of pre-test failures. Conclusions: The silane and adhesive application after indirect resin composite sandblasting did not improve the bond strength of dentin-composite overlay complex. Selection of the resin cement seems to be a more relevant factor when bonding indirect composites to dentin than its surface treatmen

A multiparameter flow cytometry immunophenotypic algorithm for the identification of newly diagnosed symptomatic myeloma with an MGUS-like signature and long-term disease control

GEM (Grupo Español de MM)/PETHEMA (Programa para el Estudio de la Terapéutica en Hemopatías Malignas) cooperative study group: et al.Achieving complete remission (CR) in multiple myeloma (MM) translates into extended survival, but two subgroups of patients fall outside this paradigm: cases with unsustained CR, and patients that do not achieve CR but return into a monoclonal gammopathy of undetermined significance (MGUS)-like status with long-term survival. Here, we describe a novel automated flow cytometric classification focused on the analysis of the plasma-cell compartment to identify among newly diagnosed symptomatic MM patients (N=698) cases with a baseline MGUS-like profile, by comparing them to MGUS (N=497) patients and validating the classification model in 114 smoldering MM patients. Overall, 59 symptomatic MM patients (8%) showed an MGUS-like profile. Despite achieving similar CR rates after high-dose therapy/autologous stem cell transplantation vs other MM patients, MGUS-like cases had unprecedented longer time-to-progression (TTP) and overall survival (OS; ∼60% at 10 years; P<0.001). Importantly, MGUS-like MM patients failing to achieve CR showed similar TTP (P=0.81) and OS (P=0.24) vs cases attaining CR. This automated classification also identified MGUS patients with shorter TTP (P=0.001, hazard ratio: 5.53) and ultra-high-risk smoldering MM (median TTP, 15 months). In summary, we have developed a biomarker that identifies a subset of symptomatic MM patients with an occult MGUS-like signature and an excellent outcome, independently of the depth of response.Peer Reviewe

Minimal residual disease evaluation by flow cytometry is a complementary tool to cytogenetics for treatment decisions in acute myeloid leukaemia

For PETHEMA Programa para el Estudio de la Terapéutica en Hemopatías Malignas Cooperative Study Group.The clinical utility of minimal residual disease (MRD) analysis in acute myeloid leukaemia (AML) is not yet defined. We analysed the prognostic impact of MRD level at complete remision after induction therapy using multiparameter flow cytometry in 306 non-APL AML patients. First, we validated the prognostic value of MRD-thresholds we have previously proposed (≥0.1%; ≥0.01-0.1%; and <0.01), with a 5-year RFS of 38%, 50% and 71%, respectively (p = 0.002). Cytogenetics is the most relevant prognosis factor in AML, however intermediate risk cytogenetics represent a grey zone that require other biomarkers for risk stratification, and we show that MRD evaluation discriminate three prognostic subgroups (p = 0.03). Also, MRD assessments yielded relevant information on favourable and adverse cytogenetics, since patients with favourable cytogenetics and high MRD levels have poor prognosis and patients with adverse cytogenetics but undetectable MRD overcomes the adverse prognosis. Interestingly, in patients with intermediate or high MRD levels, intensification with transplant improved the outcome as compared with chemotherapy, while the type of intensification therapy did not influenced the outcome of patients with low MRD levels. Multivariate analysis revealed age, MRD and cytogenetics as independent variables. Moreover, a scoring system, easy in clinical practice, was generated based on MRD level and cytogenetics.This work was supported in part by Spanish grants from Fondo de Investigación Sanitaria-ISCIII (FIS 00/0023-03, PI12/02321), DGCYT (SAF 94- 0308, SAF2001-1687), Conserjería de Educación de Castilla y León (HUS416A12), and Red Temática de Investigación Cooperativa en Cáncer (RTICC-ISCIII) (RD12/0036/0069).Peer Reviewe

The status of the Quijote multi-frequency instrument

The QUIJOTE-CMB project has been described in previous publications. Here we present the current status of the QUIJOTE multi-frequency instrument (MFI) with five separate polarimeters (providing 5 independent sky pixels): two which operate at 10-14 GHz, two which operate at 16-20 GHz, and a central polarimeter at 30 GHz. The optical arrangement includes 5 conical corrugated feedhorns staring into a dual reflector crossed-draconian system, which provides optimal cross-polarization properties (designed to be < -35 dB) and symmetric beams. Each horn feeds a novel cryogenic on-axis rotating polar modulator which can rotate at a speed of up to 1 Hz. The science driver for this first instrument is the characterization of the galactic emission. The polarimeters use the polar modulator to derive linear polar parameters Q, U and I and switch out various systematics. The detection system provides optimum sensitivity through 2 correlated and 2 total power channels. The system is calibrated using bright polarized celestial sources and through a secondary calibration source and antenna. The acquisition system, telescope control and housekeeping are all linked through a real-time gigabit Ethernet network. All communication, power and helium gas are passed through a central rotary joint. The time stamp is synchronized to a GPS time signal. The acquisition software is based on PLCs written in Beckhoffs TwinCat and ethercat. The user interface is written in LABVIEW. The status of the QUIJOTE MFI will be presented including pre-commissioning results and laboratory testing

La cátedra Diseño Industrial 2 B trabajó sobre dispositivos domésticos para desinfección en contexto de la pandemia del COVID-19

TRABAJOS: PROYECTO: Pul.sa / AUTORES: Pilar Peralta y Bautista Mugnaini PROYECTO: Numo / AUTORES: Tamara Toledo y Ramiro Ríos PROYECTO: Zenely / AUTORES: Sergio Olmedo y Manuel Reartes PROYECTO: Torretas de Ozono / AUTORES: Pedro Juan Delgado Bratti y Daniel Shen PROYECTO: ANCO / AUTORES: Belén Sol Quinteros y Bruno Mediavilla PROYECTO: Fructífero / AUTORES: Romina Escudero y Santiago Bognano PROYECTO: Acom / AUTORES: Ariadna Cevasco y M. Laura Gonzalez PROYECTO: NOZ / AUTORES: Camila Rapaline & Tomás Rodriguez BravoLa cátedra Diseño Industrial 2 B trabajó sobre dispositivos domésticos para desinfección en contexto de la pandemia del COVID-19 Compartimos los proyectos realizados por estudiantes de la cátedra Diseño Industrial 2B, que durante la primera parte del año, trabajaron sobre dispositivos domésticos para desinfección en contexto de la pandemia del COVID-19. Desde la Facultad de Arquitectura, Urbanismo y Diseño (Universidad Nacional de Córdoba) se iniciaron diferentes acciones para adaptar los contenidos de las carreras y atender a las diferentes necesidades sociales en el contexto de emergencia sanitaria. En ese sentido, la cátedra Diseño Industrial 2B se propuso situar la problemática de trabajo en las condiciones generadas por la pandemia del COVID-19, a partir de las cuales se generan cambios en la vida cotidiana, que afectan las actividades y llevan a incorporar nuevos hábitos y formas de relacionarse. La cátedra propuso a sus estudiantes pensar sistemas portátiles para el ámbito doméstico que permitieran la desinfección de elementos y pertenencias en el ingreso al domicilio. El trabajo práctico propuesto, abordó la complejidad de un producto-máquina desde su comprensión como sistema, con piezas intercambiables y/o combinables que posibilitan diferentes instancias de funcionamiento, abarcando la variablidad de escalas, tanto de relación manual como corporal, en cuanto a la observación de actividades, posturas y situaciones de uso.Fil: Oliva, Silvia. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: de la Fuente, Federico. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Speroni, Diego. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Franco, Belén. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Cagliero, Leonardo. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Parra, Javier. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Talmon, Gaspar. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Gili, Agustina. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Costamagna, Camila. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Vélez, Simón. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina.Fil: Giménez, Lucas. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño. Cátedra Diseño Industrial; Argentina

Design and baseline characteristics of the finerenone in reducing cardiovascular mortality and morbidity in diabetic kidney disease trial

Background: Among people with diabetes, those with kidney disease have exceptionally high rates of cardiovascular (CV) morbidity and mortality and progression of their underlying kidney disease. Finerenone is a novel, nonsteroidal, selective mineralocorticoid receptor antagonist that has shown to reduce albuminuria in type 2 diabetes (T2D) patients with chronic kidney disease (CKD) while revealing only a low risk of hyperkalemia. However, the effect of finerenone on CV and renal outcomes has not yet been investigated in long-term trials. Patients and Methods: The Finerenone in Reducing CV Mortality and Morbidity in Diabetic Kidney Disease (FIGARO-DKD) trial aims to assess the efficacy and safety of finerenone compared to placebo at reducing clinically important CV and renal outcomes in T2D patients with CKD. FIGARO-DKD is a randomized, double-blind, placebo-controlled, parallel-group, event-driven trial running in 47 countries with an expected duration of approximately 6 years. FIGARO-DKD randomized 7,437 patients with an estimated glomerular filtration rate >= 25 mL/min/1.73 m(2) and albuminuria (urinary albumin-to-creatinine ratio >= 30 to <= 5,000 mg/g). The study has at least 90% power to detect a 20% reduction in the risk of the primary outcome (overall two-sided significance level alpha = 0.05), the composite of time to first occurrence of CV death, nonfatal myocardial infarction, nonfatal stroke, or hospitalization for heart failure. Conclusions: FIGARO-DKD will determine whether an optimally treated cohort of T2D patients with CKD at high risk of CV and renal events will experience cardiorenal benefits with the addition of finerenone to their treatment regimen. Trial Registration: EudraCT number: 2015-000950-39; ClinicalTrials.gov identifier: NCT02545049

Pridopidine modifies disease phenotype in a SOD1 mouse model of amyotrophic lateral sclerosis

Amyotrophic lateral sclerosis (ALS) is a lethal and incurable neurodegenerative disease due to the loss of upper and lower motor neurons, which leads to muscle weakness, atrophy, and paralysis. Sigma-1 receptor (σ-1R) is a ligand-operated protein that exhibits pro-survival and anti-apoptotic properties. In addition, mutations in its codifying gene are linked to development of juvenile ALS pointing to an important role in ALS. Here, we investigated the disease-modifying effects of pridopidine, a σ-1R agonist, using a delayed onset SOD1 G93A mouse model of ALS. Mice were administered a continuous release of pridopidine (3.0 mg/kg/day) for 4 weeks starting before the appearance of any sign of muscle weakness. Mice were monitored weekly and several behavioural tests were used to evaluate muscle strength, motor coordination and gait patterns. Pridopidine-treated SOD1 G93A mice showed genotype-specific effects with the prevention of cachexia. In addition, these effects exhibited significant improvement of motor behaviour 5 weeks after treatment ended. However, the survival of the animals was not extended. In summary, these results show that pridopidine can modify the disease phenotype of ALS-associated cachexia and motor deficits in a SOD1 G93A mouse model

Longitudinal monitoring of the mouse brain reveals heterogenous network trajectories during aging

Abstract The human aging brain is characterized by changes in network efficiency that are currently best captured through longitudinal resting-state functional MRI (rs-fMRI). These studies however are challenging due to the long human lifespan. Here we show that the mouse animal model with a much shorter lifespan allows us to follow the functional network organization over most of the animal’s adult lifetime. We used a longitudinal study of the functional connectivity of different brain regions with rs-fMRI under anesthesia. Our analysis uncovers network modules similar to those reported in younger mice and in humans (i.e., prefrontal/default mode network (DMN), somatomotor and somatosensory networks). Statistical analysis reveals different patterns of network reorganization during aging. Female mice showed a pattern akin to human aging, with de-differentiation of the connectome, mainly due to increases in connectivity of the prefrontal/DMN cortical networks to other modules. Our male cohorts revealed heterogenous aging patterns with only one group confirming the de- differentiation, while the majority showed an increase in connectivity of the somatomotor cortex to the Nucleus accumbens. In summary, in line with human work, our analysis in mice supports the concept of de-differentiation in the aging mammalian brain and reveals additional trajectories in aging mice networks