Plan de negocio para la implementaci?n de una plataforma digital ?Tranki? que permita mitigar el estr?s para millennials en la Regi?n Lima Metropolitana

El estr?s es considerado como un conjuntode reacciones fisiol?gicas, en el cual las personas pasan por un estado f?sico, mental o tambi?n emocional que es causada por presiones en diversas circunstancias de la vida cotidiana. En el Per?,la poblaci?n llamada millennials se sienten ansiosos o estresados por la emergencia sanitaria actual, cuya cantidad se contabiliza en aproximadamente 8 millones de personas, las cuales comparten ciertas caracter?sticas y se considera una generaci?n que no concibe su vida sin el uso de los dispositivos m?viles y plataformas digitales. Por esta raz?n, el presente plan de negocios propone la Plataforma Digital Tranki, la cual tiene el objetivo de proveer un servicio alternativo que ofrezca soluciones oportunas y efectivas a los j?venes millennials con ansiedad y altos niveles de agitaci?n, con la finalidad de proporcionarle formas did?cticas para atenuar los s?ntomas del estr?s;por medio de consejos, recomendaciones y planes saludables personalizados y adaptados a la situaci?n actual. Adem?s, se proyecta atender a las personas de la Regi?n Lima Metropolitana, generandouningresoadicional al personal especializado en salud mental que tuviera la oportunidad de brindar sus servicios. Esta idea se posiciona como una alternativa innovadora, que genera un impacto positivo sobre la salud p?blica

Characterization of Intact Proviruses in Blood and Lymph Node from HIV-Infected Individuals Undergoing Analytical Treatment Interruption.

The role of lymphoid tissue as a potential source of HIV-1 rebound following interruption of antiretroviral therapy (ART) is uncertain. To address this issue, we compared the latent viruses obtained from CD4+ T cells in peripheral blood and lymph nodes to viruses emerging during treatment interruption. Latent viruses were characterized by sequencing near-full-length (NFL) proviral DNA and env from viral outgrowth assays (VOAs). Five HIV-1-infected individuals on ART were studied, four of whom participated in a clinical trial of a TLR9 agonist that included an analytical treatment interruption. We found that 98% of intact or replication-competent clonal sequences overlapped between blood and lymph node. In contrast, there was no overlap between 205 latent reservoir and 125 rebound sequences in the four individuals who underwent treatment interruption. However, rebound viruses could be accounted for by recombination. The data suggest that CD4+ T cells carrying latent viruses circulate between blood and lymphoid tissues in individuals on ART and support the idea that recombination may play a role in the emergence of rebound viremia.IMPORTANCE HIV-1 persists as a latent infection in CD4+ T cells that can be found in lymphoid tissues in infected individuals during ART. However, the importance of this tissue reservoir and its contribution to viral rebound upon ART interruption are not clear. In this study, we sought to compare latent HIV-1 from blood and lymph node CD4+ T cells from five HIV-1-infected individuals. Further, we analyzed the contribution of lymph node viruses to viral rebound. We observed that the frequencies of intact proviruses were the same in blood and lymph node. Moreover, expanded clones of T cells bearing identical proviruses were found in blood and lymph node. These latent reservoir sequences did not appear to be the direct origin of rebound virus. Instead, latent proviruses were found to contribute to the rebound compartment by recombination

Desarrollo de estrategia competitiva en la industria de sensores Capstone

El presente documento de obtención de grado incorpora el análisis del desempeño de la compañía Chester en la simulación en la plataforma Capstone; y que, durante un periodo de ocho años, permitió a los integrantes del equipo demostrar los conocimientos adquiridos durante los estudios de posgrado, al administrar todas las áreas que comprenden la compañía, buscando cumplir con los objetivos estratégicos en alineación con la filosofía empresarial. En el primer capítulo se incorpora el fundamento teórico, con base en el cual se planteó la estrategia a seguir durante la simulación, y que apoyó en la toma de decisiones. Mediante el análisis de empresas reales, se pretende aterrizar y sustentar los resultados obtenidos de los aciertos o errores cometidos en el marco de lo planteado por los casos de estudio utilizados para su valoración. El segundo capítulo está comprendido por el análisis de la industria en Capstone, las condiciones iniciales y se presenta la constitución de la empresa Chester y los objetivos estratégicos planteados antes de dar comienzo a la operación. Los capítulos comprendidos entre el tres y seis, detallan las acciones y resultados obtenidos durante 2020 y 2027 por departamento. Se profundiza en las áreas de oportunidad, acciones emprendidas ante la competencia y el análisis de la industria; asimismo, mediante el Balanced Scorecard se hace valoración de la situación de la compañía al término de cada periodo. Para finalizar, en el capítulo siete se presentan las reflexiones por parte del equipo con respecto al simulador de negocios, la asignatura Investigación, Desarrollo e Innovación, así como de del programa educativo

In Situ Characterization of Human Lymphoid Tissue Immune Cells by Multispectral Confocal Imaging and Quantitative Image Analysis; Implications for HIV Reservoir Characterization

CD4 T cells are key mediators of adaptive immune responses during infection and vaccination. Within secondary lymphoid organs, helper CD4 T cells, particularly those residing in germinal centers known as follicular helper T cells (Tfh), provide critical help to B-cells to promote their survival, isotype switching and selection of high affinity memory B-cells. On the other hand, the important role of Tfh cells for the maintenance of HIV reservoir is well documented. Thus, interrogating and better understanding the tissue specific micro-environment and immune subsets that contribute to optimal Tfh cell differentiation and function is important for designing successful prevention and cure strategies. Here, we describe the development and optimization of eight multispectral confocal microscopy immunofluorescence panels designed for in depth characterization and immune-profiling of relevant immune cells in formalin-fixed paraffin-embedded human lymphoid tissue samples. We provide a comprehensive library of antibodies to use for the characterization of CD4+ T-cells -including Tfh and regulatory T-cells- as well as CD8 T-cells, B-cells, macrophages and dendritic cells and discuss how the resulting multispectral confocal datasets can be quantitatively dissected using the HistoCytometry pipeline to collect information about relative frequencies and immune cell spatial distributions. Cells harboring actively transcribed virus are analyzed using an in-situ hybridization assay for the characterization of HIV mRNA positive cells in combination with additional protein markers (multispectral RNAscope). The application of this methodology to lymphoid tissues offers a means to interrogate multiple relevant immune cell targets simultaneously at increased resolution in a reproducible manner to guide CD4 T-cell studies in infection and vaccination

Effects of dietary inclusion of dry distillers grains with solubles on performance, carcass characteristics, and nitrogen metabolism in meat sheep: a meta-analysis

We conducted a meta-analysis in this scientific study to determine the effects of feeding meat sheep dry distillers grains with solubles (DDGS). Thirty-three peer-reviewed articles that met our inclusion requirements and were published between 1997 and 2021 were examined. To calculate the variation in performance, fermentation, carcass features, and nitrogen efficiency between the DDGS and control (no DDGS) treatments, we used 940 sheep weighing an average of 29.1 ± 1.5 kg. We used a hierarchical mixed model to conduct a meta-regression, subset, and dose–response analysis, while taking into consideration categorical variables like breed (pure or cross-breed), and continuous factors, like CP, NDF, and DDGS inclusion rate. Our findings indicate that sheep fed DDGS had higher (p < 0.05) final body weight (51.4 vs. 50.4 kg), neutral detergent fiber digestibility (55.9 vs. 53.8%), and total-tract ether extract digestibility (81.7 vs. 78.7%) than sheep on a control diet. No effects were observed on DMI, CP, and rumen fermentation, but dietary DDGS tended to increase (p = 0.07) HC weight (25.53 vs. 24.6 kg) and meat (redness) color (16.6 vs. 16.3) among treatment comparisons. Dietary DDGS was associated with higher N intake (29.9 vs. 26.8 g/d), fecal N (8.2 vs. 7.8 g/d), and digestibility (71.9 vs. 68.5%). Urinary nitrogen was significantly (p < 0.05) affected linearly by increasing the intake of DDGS in the diet. Based on the dose–response analysis, dietary DDGS inclusion should not exceed 20% to avoid negative effects on performance, nitrogen metabolism, and meat color. Dietary protein from DDGS should not exceed 17% to prevent reduced TVFA concentrations. Breed strongly influenced (p < 0.05) RMD in performance, and inconsistent responses were observed between crossbreed and purebred sheep comparisons. Despite these inconsistencies, no publication bias was observed, but a high variance (Ω2) among comparisons-between-studies was detected. This meta-analysis showed evidence in support of the hypothesis that feeding meat sheep DDGS at a rate of 20% can improve their performance, digestibility, carcass weight, and meat color

Reduced human platelet uptake by pig livers deficient in the asialoglycoprotein receptor 1 protein

BACKGROUND: The lethal thrombocytopenia that accompanies liver xenotransplantation is a barrier to clinical application. Human platelets are bound by the asialoglycoprotein receptor (ASGR) on pig sinusoidal endothelial cells and phagocytosed. Inactivation of the ASGR1 gene in donor pigs may prevent xenotransplantation-induced thrombocytopenia. METHODS: Transcription activator-like effector nucleases (TALENs) were targeted to the ASGR1 gene in pig liver-derived cells. ASGR1 deficient pig cells were used for somatic cell nuclear transfer (SCNT). ASGR1 knock out (ASGR1-/-) fetal fibroblasts were used to produce healthy ASGR1 knock out piglets. Human platelet uptake was measured in ASGR1+/+ and ASGR1-/- livers. RESULTS: Targeted disruption of the ASGR1 gene with TALENs eliminated expression of the receptor. ASGR1-/- livers phagocytosed fewer human platelets than domestic porcine livers during perfusion. CONCLUSIONS: The use of TALENs in liver-derived cells followed by SCNT enabled the production of healthy homozygous ASGR1 knock out pigs. Livers from ASGR1-/- pigs exhibit decreased human platelet uptake. Deletion of the ASGR1 gene is a viable strategy to diminish platelet destruction in pig-to-human xenotransplantation

CD32 is expressed on cells with transcriptionally active HIV but does not enrich for HIV DNA in resting T cells

The persistence of HIV reservoirs, including latently infected, resting CD4+ T cells, is the major obstacle to cure HIV infection. CD32a expression was recently reported to mark CD4+ T cells harboring a replication-competent HIV reservoir during antiretroviral therapy (ART) suppression. We aimed to determine whether CD32 expression marks HIV latently or transcriptionally active infected CD4+ T cells. Using peripheral blood and lymphoid tissue of ART-treated HIV+ or SIV+ subjects, we found that most of the circulating memory CD32+ CD4+ T cells expressed markers of activation, including CD69, HLA-DR, CD25, CD38, and Ki67, and bore a TH2 phenotype as defined by CXCR3, CCR4, and CCR6. CD32 expression did not selectively enrich for HIV- or SIV-infected CD4+ T cells in peripheral blood or lymphoid tissue; isolated CD32+ resting CD4+ T cells accounted for less than 3% of the total HIV DNA in CD4+ T cells. Cell-associated HIV DNA and RNA loads in CD4+ T cells positively correlated with the frequency of CD32+ CD69+ CD4+ T cells but not with CD32 expression on resting CD4+ T cells. Using RNA fluorescence in situ hybridization, CD32 coexpression with HIV RNA or p24 was detected after in vitro HIV infection (peripheral blood mononuclear cell and tissue) and in vivo within lymph node tissue from HIV-infected individuals. Together, these results indicate that CD32 is not a marker of resting CD4+ T cells or of enriched HIV DNA–positive cells after ART; rather, CD32 is predominately expressed on a subset of activated CD4+ T cells enriched for transcriptionally active HIV after long-term ART

Elaboración de fichas técnicas de dispositivos médicos en el marco de las evaluaciones de tecnologías sanitarias durante la pandemia por COVID-19: Una revisión de la situación a nivel mundial y reporte de la experiencia peruana

Background: Given the health emergency caused by COVID-19, the need for the use of medical devices was particularly relevant. Methodology: A non-systematic literature search was conducted to identify documents that address topics related to the development, implementation, evaluation and/or characteristics of technical datasheets for medical devices. In addition, the SAP System was reviewed for the collection and analysis of data related to pre-pandemic (2000-2019) and in-pandemic (2020-2021) procurement. Evidence: At the global level, the experiences of WHO, ECRI Institute and INAHTA were described. At the Latin American level, experiences were found in Ecuador, Colombia, Argentina, Brazil, Mexico and Panama. Finally, at the Peruvian level, the experience of EsSalud was reported, showing that, from March 6, 2020 to May 21, 2021, 47 technical specifications were prepared for medical devices, of which 41 had purchase records, and of these, 13 correspond to biomedical and complementary equipment. We prioritized the reporting of consumption information (expressed in quantities purchased) for three devices: compact pulse oximeter, high-flow oxygen therapy equipment and the oxygen concentrator (10 L/min). Conclusion: The preparation of technical sheets considers the best scientific evidence available, as well as the technical-technological aspects of the medical device. In EsSalud, its preparation has allowed the incorporation of a significant quantity and variety of biomedical equipment for the treatment of COVID-19, in addition they have been made available with recommendations for their clinical use based on the scientific evidence analyzed.Introducción: Ante la situación de emergencia sanitaria por la COVID-19, la necesidad de uso de dispositivos médicos tuvo especial relevancia. Metodología: Se realizó una búsqueda no sistemática de la literatura dirigida a la identificación de documentos que aborden tópicos relacionados al desarrollo, implementación, evaluación y/o características de fichas técnicas de dispositivos médicos. Así mismo, se revisó el Sistema SAP para la obtención y análisis de los datos relacionados a las compras antes de pandemia (2000-2019) y durante pandemia (2020-2021). Contenido: A nivel mundial, se describieron las experiencias de la OMS, Instituto ECRI e INAHTA. A nivel de Latinoamérica, se encontraron experiencias en Ecuador, Colombia, Argentina, Brasil, México y Panamá. Finalmente, a nivel Perú, se reportó la experiencia de EsSalud, evidenciándose que, del 6 de marzo de 2020 al 21 de mayo de 2021, se elaboraron 47 fichas técnicas de dispositivos médicos, de las cuales 41 figuraban con registros de compras, y de estos, 13 corresponden a equipos biomédicos y complementarios. Priorizamos el reporte de información del consumo (expresado en cantidades adquiridas) de tres dispositivos: pulsioxímetro compacto, equipo de oxigenoterapia de alto flujo y concentrador de oxígeno de 10 L/minuto. Conclusión: La elaboración de fichas técnicas considera la mejor evidencia científica disponible, así como los aspectos técnicos-tecnológicos propios del dispositivo médico. En EsSalud, su elaboración ha permitido incorporar una importante cantidad y variedad de equipos biomédicos para el tratamiento de COVID-19, ademas han sido puestos a disposición con recomendaciones de su uso clínico sustentadas en la evidencia científica analizada