Unconditional Quantile Partial Effects via Conditional Quantile Regression

This paper develops a semi-parametric procedure for estimation of unconditional quantile partial effects using quantile regression coefficients. The estimator is based on an identification result showing that, for continuous covariates, unconditional quantile effects are a weighted average of conditional ones at particular quantile levels that depend on the covariates. We propose a two-step estimator for the unconditional effects where in the first step one estimates a structural quantile regression model, and in the second step a nonparametric regression is applied to the first step coefficients. We establish the asymptotic properties of the estimator, say consistency and asymptotic normality. Monte Carlo simulations show numerical evidence that the estimator has very good finite sample performance and is robust to the selection of bandwidth and kernel. To illustrate the proposed method, we study the canonical application of the Engel's curve, i.e. food expenditures as a share of income

New correlations between ocular parameters and disease severity in Spanish patients with Gaucher’s disease Type I

Background: Gaucher’s disease is associated with a high variety of structural and functional abnormalities in the eye, which do not always affect visual acuity. The purpose of this study was to analyse ocular features in Spanish patients with Gaucher’s disease type I, and to investigate their possible correlation with phenotypic and burden parameters of this entity. Methods: This cross-sectional observational study compared parameters belonging to 18 eyes from 9 Spanish patients with Gaucher’s disease Type I with 80 eyes from 40 healthy controls. Complete ophthalmological examination included choroidal and retinal thickness maps with swept source optical coherence tomography. Systemic analysis included genotype, plasmatic biomarkers, [ferritin, chemokine ligand 18 (CCL18) and chitotriosidase (ChT)] and severity scoring systems results [“Gaucher Disease Severity Score Index Type I" (GauSSI-I) and “Gaucher disease severity scoring system” (GD-DS3)]. Results: Nine subjects (18 eyes) were cases (female: 55.5%, mean age 45 years; male: 44.5%, mean age 36 years) and 40 subjects (80 eyes) were controls (female: 49%, mean age 50 years; male: 51%, mean age 55 years). There were no statistically significant differences when comparing ocular parameters (visual acuity; axial length, refractive errors, corneal parameters, lens, retinal and choroidal thickness) between case and control subjects (p>0.05). A statistically significant moderate correlation was observed between lower retinal thickness and choroidal quadrants thickness and greater disease severity scores. A lower central retinal thickness also correlates with higher biological plasmatic levels, and has a statistically significant association with the most affected patient with genotype N370S/Del 55pb. Conversely, higher pachymetry involves a more severe plasmatic concentration of biomarkers. Conclusions: Our results suggest that pachymetry, and retinal and choroidal thickness, are associated with burden biomarkers and disease severity index scores in Spanish patients with Gaucher’s disease Type I

Ferris, el resurgimiento de una empresa líder en ventas Capstone

El presente documento describe el paso de la empresa Ferris en el simulador Capstone, que tiene como cometido establecer un ambiente que permita la aplicación del conocimiento y habilidades adquiridas durante el curso del posgrado, a través de la dirección de una empresa que requiere un planteamiento de identidad, definición de estrategia y objetivos, con la participación en una industria por lapso de ocho años simulados, donde el planteamiento escrito de ese transcurso cimente que se poseen los elementos necesarios para la obtención del grado de Maestro en Administración para los autores de este proyecto. El capítulo primero define el fundamento teórico para establecer o dirigir una empresa, desde la planeación, estrategia, financiamiento, recursos, capacidades, liderazgo, modelos de negocio, innovación y sostenibilidad. El capítulo segundo describe a la empresa Ferris y la industria Capstone; define la identidad corporativa de la compañía, su equipo directivo, estructura organizacional, estrategia genérica, objetivos y tácticas. Del capítulo tercero al sexto se analiza e interpreta la participación en el simulador para seis compañías; el impacto de las decisiones internas y externas con propósito de reforzar, o calibrar, las tácticas que permitan un mejor desempeño a Ferris en la industria, para lograr los objetivos establecidos. El capítulo séptimo presenta el cierre de los autores sobre el desarrollo de este trabajo con relación al simulador, la asignatura y el posgrado cursado; su aplicación personal y empresarial, así como el impacto que ello puede generar en la sociedad.ITESO, A.C

Effects of different doses of Salix babylonica extract on growth performance and diet in vitro gas production in Pelibuey growing lambs

Twenty Pelibuey 3-4 month old and 23.7±3.3 kg body weight male lambs were used in a randomised design to study the effects of daily oral administration of Salix babylonica (SB) extract on dry matter (DM), water intake, average daily gain (ADG), and feed efficiency for 72 days. Animals were divided into four groups fed the same total mixed ration with different doses of SB: 0 (Control), 20 (SB20), 40 (SB40) and 60 (SB60) mL/lamb/d. In vitro gas production (GP) of the same diet fed to lambs as a substrate was measured with different doses of SB (0, 0.3, 0.7, 1.0 mL/g DM). Daily administration of SB to lambs had no effects (P=0.05) on growth performance and DMI (linear effect, P=0.2805; quadratic effect, P=0.3747). Both low and moderate doses of SB (SB40>SB20) tended to increase (linear effect, P=0.4010; quadratic effect, P=0.9166) ADG. The asymptotic GP quadratically increased (PSB20) tended to increase (linear effect, P=0.4010; quadratic effect, P=0.9166) ADG. The asymptotic GP quadratically increased (PSB20) tended to increase (linear effect, P=0.4010; quadratic effect, P=0.9166) ADG. The asymptotic GP quadratically increased (P<0.001) with decreased GP rate and with increasing SB extract doses. In vitro GP increased (P<0.05) with advancing of incubation time in all SB doses. During the first 24 h of incubation, 0.3 mL SB/g DM had the highest GP, whereas 1.0 mL SB/g DM quadratically increased (P<0.001) GP. The low dose of SB extract increased ME (linear effect, P=0.024) and short chain fatty acids (SCFA) (linear effect, P=0.023). However, the highest dose quadratically decreased (P=0.02) DM degradability. In conclusion, administration of SB extract at 40 mL/lamb/d tended to increase DM intake, improve daily weight gain in growing lambs with increasing asymptotic in vitro ruminal GP and SB dose

Identificación morfológica y molecular de Cysticercus fasciolaris aislado de un roedor (Rattus norvegicus) de la provincia de Buenos Aires (Argentina).

En un estudio exploratorio de roedores de la especie Rattus norvegicus de la provincia de Buenos Aires, se observó que ciertos metacestodos de tenias se encontraban enquis- tados en el hígado del hospedador. Nuestro objetivo fue identificar esta forma larval, basándonos en estudios morfológicos y moleculares. Para la caracterización molecular del parásito, se amplificó y secuenció el ADN ribosomal (28S) y mitocondrial (COI). Sobre la base de los datos tanto morfológicos como moleculares, y utilizando herramientas bio- informáticas, el metacestodo se identificó como Cysticercus fasciolaris. La forma adulta (Taenia taeniaeformis) comúnmente infecta hospedadores mamíferos félidos y cánidos. Esta es la primera vez que se caracteriza molecularmente este helminto, aislado de roe- dores de la provincia de Buenos Aires.Fil: Martinez, Mara Leila. Instituto Nacional de Tecnologia Agropecuaria. Centro Nacional de Inv. Agropecuarias. Centro de Invest.de Cs.veterinarias y Agronomicas. Instituto de Patobiologia; Argentina;Fil: Dominguez, Mariana Gabriela. Instituto Nacional de Tecnologia Agropecuaria. Centro Nacional de Inv. Agropecuarias. Centro de Invest.de Cs.veterinarias y Agronomicas. Instituto de Patobiologia; Argentina;Fil: Morici, Gabriel E.. Instituto Nacional de Tecnologia Agropecuaria. Centro Nacional de Inv. Agropecuarias. Centro de Invest.de Cs.veterinarias y Agronomicas. Instituto de Patobiologia; Argentina;Fil: Cavia, Regino. Consejo Nacional de Invest. Científ.y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Bs. As; Argentina; Universidad de Buenos Aires. Facultad de Cs.exactas y Naturales. Departamento de Ecologia, Genetica y Evolución; Argentina;Fil: Montes de Oca, Daniela Paula. INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS; ecologia;Fil: Lovera, Rosario. Universidad de Buenos Aires. Facultad de Cs.exactas y Naturales. Departamento de Ecologia, Genetica y Evolución; Argentina; Consejo Nacional de Invest. Científ.y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Bs. As; Argentina;Fil: Schapiro, Javier Hernan. Instituto Nacional de Tecnologia Agropecuaria. Centro Nacional de Inv. Agropecuarias. Centro de Invest.de Cs.veterinarias y Agronomicas. Instituto de Patobiologia; Argentina;Fil: Caracostantogolo, Jorge Luis. Consejo Nacional de Invest.cientif.y Tecnicas. Ultraestructura, Microanalisis y Espectroscopia; Arggentina

En la costa aún sin mar

Los trabajos que conforman este volumen son una muestra de la presencia y actualidad de la obra de César Vallejo. Su poesía aún da lugar a nuevas y diversas interpretaciones; también a ciertas reconsideraciones. Asimismo, la narrativa del escritor peruano, poco atendida, está presente y exige estudio además de revalorización. La persona y obra de César Vallejo, en fin, son actuales incluso como un fenómeno metapoético.César Vallejo es un escritor esencial en el ámbito de la literatura contemporánea. Su obra literaria, escrita a principios del siglo pasado, sigue vigente. En su poesía, en particular, captó la sensibilidad de toda una época. Asimismo, supo traducir lo que él llamaba “el ritmo interior y el espíritu que se desprende de la realidad actual”. En cuanto a su obra en prosa, los estudios recientes dan muestra de su importancia, valor social y artístico. A casi cien años de la publicación de libros como Trilce y Los heraldos negros, la obra de César Vallejo sigue siendo fuente de goce estético y, por su complejidad, de búsqueda de conocimiento profundo de la realidad social y humana

A cyclin-D1 interaction with BAX underlies its oncogenic role and potential as a therapeutic target in mantle cell lymphoma

The chromosomal translocation t(11;14)(q13;q32) leading to cyclin-D1 overexpression plays an essential role in the development of mantle cell lymphoma (MCL), an aggressive tumor that remains incurable with current treatment strategies. Cyclin-D1 has been postulated as an effective therapeutic target, but the evaluation of this target has been hampered by our incomplete understanding of its oncogenic functions and by the lack of valid MCL murine models. To address these issues, we generated a cyclin-D1-driven mouse model in which cyclin-D1 expression can be regulated externally. These mice developed cyclin-D1-expressing lymphomas capable of recapitulating features of human MCL. We found that cyclin-D1 inactivation was not sufficient to induce lymphoma regression in vivo; however, using a combination of in vitro and in vivo assays, we identified a novel prosurvival cyclin-D1 function in MCL cells. Specifically, we found that cyclin-D1, besides increasing cell proliferation through deregulation of the cell cycle at the G(1)-S transition, sequestrates the proapoptotic protein BAX in the cytoplasm, thereby favoring BCL2's antiapoptotic function. Accordingly, cyclin-D1 inhibition sensitized the lymphoma cells to apoptosis through BAX release. Thus, genetic or pharmacologic targeting of cyclin-D1 combined with a proapoptotic BH3 mimetic synergistically killed the cyclin-D1-expressing murine lymphomas, human MCL cell lines, and primary lymphoma cells. Our study identifies a role of cyclin-D1 in deregulating apoptosis in MCL cells, and highlights the potential benefit of simultaneously targeting cyclin-D1 and survival pathways in patients with MCL. This effective combination therapy also might be exploited in other cyclin-D1-expressing tumors

Marejadas rurales y luchas por la vida, vol. iv: permanencias, resistencias y luchas por la vida

Volumen 4. Permanencias, resistencias y luchas por la vida, coordinado por: Elisabeth A. Mager Hois, Miguel Ángel Paz Frayre y Carla Zamora Lomelí, integra 15 capítulos y está dividido en tres secciones, la primera denominada Permanencia, contiene 5 capítulos que intentan establecer como eje común la lucha continua en las comunidades campesinas para continuar con la vida rural. La segunda, Identidad y resistencia, está compuesta por 4 capítulos que reflexionan sobre varios procesos de resistencia de la vida rural ante los cambios globales e internos en su propio proceso de vida, otros trabajos intentan encontrar aquellos elementos que generan y mantienen alguna forma de identidad, y la tercera sección, Lucha por la vida, contiene 6 trabajos que demuestran todas aquellas posibilidades que existen en el medio rural para sostenerse y mantenerse, generando diferentes formas y estrategias que los une en la continua lucha por vivir con pocas pretensiones y con difíciles perspectivas pero siempre encontrando alternativas.ASOCIACIÓN MEXICANA DE ESTUDIOS RURALES, INSTITUTO DE CIENCIAS AGROPECUARIAS Y RURALES (ICAR), UNIVERSIDAD DE GUADALAJARA, FACULTAD DE ESTUDIOS SUPERIORES ACATLÁN-UNAM, ECOSUR, CUCOSTA SUR GRANA, EL COLEGIO DE MICHOACÁN A.C., UNIVERSIDAD MICHOACANA DE SAN NICOLAS HIDALG

Evolving trends in the management of acute appendicitis during COVID-19 waves. The ACIE appy II study

Background: In 2020, ACIE Appy study showed that COVID-19 pandemic heavily affected the management of patients with acute appendicitis (AA) worldwide, with an increased rate of non-operative management (NOM) strategies and a trend toward open surgery due to concern of virus transmission by laparoscopy and controversial recommendations on this issue. The aim of this study was to survey again the same group of surgeons to assess if any difference in management attitudes of AA had occurred in the later stages of the outbreak. Methods: From August 15 to September 30, 2021, an online questionnaire was sent to all 709 participants of the ACIE Appy study. The questionnaire included questions on personal protective equipment (PPE), local policies and screening for SARS-CoV-2 infection, NOM, surgical approach and disease presentations in 2021. The results were compared with the results from the previous study. Results: A total of 476 answers were collected (response rate 67.1%). Screening policies were significatively improved with most patients screened regardless of symptoms (89.5% vs. 37.4%) with PCR and antigenic test as the preferred test (74.1% vs. 26.3%). More patients tested positive before surgery and commercial systems were the preferred ones to filter smoke plumes during laparoscopy. Laparoscopic appendicectomy was the first option in the treatment of AA, with a declined use of NOM. Conclusion: Management of AA has improved in the last waves of pandemic. Increased evidence regarding SARS-COV-2 infection along with a timely healthcare systems response has been translated into tailored attitudes and a better care for patients with AA worldwide