Estimación de secuestro de carbono en los rodales de Puya Raimondii Harms en el Santuario Nacional de Calipuy

La Puya Raimondii Harms es una especie cuyas propiedades y procesos fenológicos contribuyen a la regulación de los servicios ambientales, en la actualidad está considerada en peligro de extinción y que por sus propias características no pueden crecer en todo el Perú actualmente el Santuario Nacional de Calipuy alberga los rodales más densos del territorio peruano de la puya raymondii harms con más de 6000ejemplares. La presente investigación se realizó con la finalidad de “Estimar la cantidad de secuestro de carbono por los rodales de puya raimondii harms según densidades forestales y estados de desarrollo en el Santuario Nacional de Calipuy, Santiago de Chuco”, para lo cual se utilizó la metodología semidestructivo aplicada tras la estratificación según densidades forestales y estados de desarrollo. Se desarrolló en 3 faces: trabajo en campo, trabajo en laboratorio y trabajo de gabinete. Concluyendo que el total de carbono almacenado por unidad de área y estados de desarrollo en los rodales de Puya Raimondii Harms del Santuario Nacional de Calipuy es de 135 tnC/ha(en el mismo formato) con un flujo anual promedio de 11 t2/ha/año, que hacen un total de 162 991 t2fijado a la actualidad y Las cantidades de almacenamiento de carbono según estratos forestales de densidad muy alta, alta, media, baja y muy baja son de 54, 38, 16, 22 y 4 tnC/ha, que hacen un total de 1954, 7591, 5984, 15486y 13394 tnC; respectivamente

Infected pancreatic necrosis: outcomes and clinical predictors of mortality. A post hoc analysis of the MANCTRA-1 international study

: The identification of high-risk patients in the early stages of infected pancreatic necrosis (IPN) is critical, because it could help the clinicians to adopt more effective management strategies. We conducted a post hoc analysis of the MANCTRA-1 international study to assess the association between clinical risk factors and mortality among adult patients with IPN. Univariable and multivariable logistic regression models were used to identify prognostic factors of mortality. We identified 247 consecutive patients with IPN hospitalised between January 2019 and December 2020. History of uncontrolled arterial hypertension (p = 0.032; 95% CI 1.135-15.882; aOR 4.245), qSOFA (p = 0.005; 95% CI 1.359-5.879; aOR 2.828), renal failure (p = 0.022; 95% CI 1.138-5.442; aOR 2.489), and haemodynamic failure (p = 0.018; 95% CI 1.184-5.978; aOR 2.661), were identified as independent predictors of mortality in IPN patients. Cholangitis (p = 0.003; 95% CI 1.598-9.930; aOR 3.983), abdominal compartment syndrome (p = 0.032; 95% CI 1.090-6.967; aOR 2.735), and gastrointestinal/intra-abdominal bleeding (p = 0.009; 95% CI 1.286-5.712; aOR 2.710) were independently associated with the risk of mortality. Upfront open surgical necrosectomy was strongly associated with the risk of mortality (p < 0.001; 95% CI 1.912-7.442; aOR 3.772), whereas endoscopic drainage of pancreatic necrosis (p = 0.018; 95% CI 0.138-0.834; aOR 0.339) and enteral nutrition (p = 0.003; 95% CI 0.143-0.716; aOR 0.320) were found as protective factors. Organ failure, acute cholangitis, and upfront open surgical necrosectomy were the most significant predictors of mortality. Our study confirmed that, even in a subgroup of particularly ill patients such as those with IPN, upfront open surgery should be avoided as much as possible. Study protocol registered in ClinicalTrials.Gov (I.D. Number NCT04747990)

Effects of hospital facilities on patient outcomes after cancer surgery: an international, prospective, observational study

Background Early death after cancer surgery is higher in low-income and middle-income countries (LMICs) compared with in high-income countries, yet the impact of facility characteristics on early postoperative outcomes is unknown. The aim of this study was to examine the association between hospital infrastructure, resource availability, and processes on early outcomes after cancer surgery worldwide.Methods A multimethods analysis was performed as part of the GlobalSurg 3 study-a multicentre, international, prospective cohort study of patients who had surgery for breast, colorectal, or gastric cancer. The primary outcomes were 30-day mortality and 30-day major complication rates. Potentially beneficial hospital facilities were identified by variable selection to select those associated with 30-day mortality. Adjusted outcomes were determined using generalised estimating equations to account for patient characteristics and country-income group, with population stratification by hospital.Findings Between April 1, 2018, and April 23, 2019, facility-level data were collected for 9685 patients across 238 hospitals in 66 countries (91 hospitals in 20 high-income countries; 57 hospitals in 19 upper-middle-income countries; and 90 hospitals in 27 low-income to lower-middle-income countries). The availability of five hospital facilities was inversely associated with mortality: ultrasound, CT scanner, critical care unit, opioid analgesia, and oncologist. After adjustment for case-mix and country income group, hospitals with three or fewer of these facilities (62 hospitals, 1294 patients) had higher mortality compared with those with four or five (adjusted odds ratio [OR] 3.85 [95% CI 2.58-5.75]; p<0.0001), with excess mortality predominantly explained by a limited capacity to rescue following the development of major complications (63.0% vs 82.7%; OR 0.35 [0.23-0.53]; p<0.0001). Across LMICs, improvements in hospital facilities would prevent one to three deaths for every 100 patients undergoing surgery for cancer.Interpretation Hospitals with higher levels of infrastructure and resources have better outcomes after cancer surgery, independent of country income. Without urgent strengthening of hospital infrastructure and resources, the reductions in cancer-associated mortality associated with improved access will not be realised

31st Annual Meeting and Associated Programs of the Society for Immunotherapy of Cancer (SITC 2016) : part two

Background The immunological escape of tumors represents one of the main ob- stacles to the treatment of malignancies. The blockade of PD-1 or CTLA-4 receptors represented a milestone in the history of immunotherapy. However, immune checkpoint inhibitors seem to be effective in specific cohorts of patients. It has been proposed that their efficacy relies on the presence of an immunological response. Thus, we hypothesized that disruption of the PD-L1/PD-1 axis would synergize with our oncolytic vaccine platform PeptiCRAd. Methods We used murine B16OVA in vivo tumor models and flow cytometry analysis to investigate the immunological background. Results First, we found that high-burden B16OVA tumors were refractory to combination immunotherapy. However, with a more aggressive schedule, tumors with a lower burden were more susceptible to the combination of PeptiCRAd and PD-L1 blockade. The therapy signifi- cantly increased the median survival of mice (Fig. 7). Interestingly, the reduced growth of contralaterally injected B16F10 cells sug- gested the presence of a long lasting immunological memory also against non-targeted antigens. Concerning the functional state of tumor infiltrating lymphocytes (TILs), we found that all the immune therapies would enhance the percentage of activated (PD-1pos TIM- 3neg) T lymphocytes and reduce the amount of exhausted (PD-1pos TIM-3pos) cells compared to placebo. As expected, we found that PeptiCRAd monotherapy could increase the number of antigen spe- cific CD8+ T cells compared to other treatments. However, only the combination with PD-L1 blockade could significantly increase the ra- tio between activated and exhausted pentamer positive cells (p= 0.0058), suggesting that by disrupting the PD-1/PD-L1 axis we could decrease the amount of dysfunctional antigen specific T cells. We ob- served that the anatomical location deeply influenced the state of CD4+ and CD8+ T lymphocytes. In fact, TIM-3 expression was in- creased by 2 fold on TILs compared to splenic and lymphoid T cells. In the CD8+ compartment, the expression of PD-1 on the surface seemed to be restricted to the tumor micro-environment, while CD4 + T cells had a high expression of PD-1 also in lymphoid organs. Interestingly, we found that the levels of PD-1 were significantly higher on CD8+ T cells than on CD4+ T cells into the tumor micro- environment (p < 0.0001). Conclusions In conclusion, we demonstrated that the efficacy of immune check- point inhibitors might be strongly enhanced by their combination with cancer vaccines. PeptiCRAd was able to increase the number of antigen-specific T cells and PD-L1 blockade prevented their exhaus- tion, resulting in long-lasting immunological memory and increased median survival

Comprensión y Producción de Lenguaje II - HU544 - 202102

Descripción: Comprensión y Producción de Lenguaje 2 es un curso en el que el estudiante desarrolla sus habilidades para la comprensión lectora y la redacción de textos formales argumentativos en situaciones comunicativas determinadas. Para ello, emplea recursos de redacción que le permitirán una organización coherente, un desarrollo sólido y convincente (a partir de la lectura crítica de fuentes diversas), y una escritura respetuosa de la normativa y de la ortografía vigentes. Propósito: Este curso tiene como requisito Comprensión y Producción de Lenguaje 1. Desarrolla, siguiendo la política educativa propuesta por la UPC en SICA, la competencia Comunicación escrita en el nivel de logro 1. El propósito es que el estudiante pueda producir textos argumentativos coherentes y sustentados a partir de una evaluación crítica de la información. Esas habilidades le permitirán comunicarse de manera escrita para convencer acerca de sus propios puntos de vista en los demás cursos de sus carreras. Además, en el mundo laboral, le permitirá sustentar textualmente sus propuestas y proyectos de manera eficiente

Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries

Background: 80% of individuals with cancer will require a surgical procedure, yet little comparative data exist on early outcomes in low-income and middle-income countries (LMICs). We compared postoperative outcomes in breast, colorectal, and gastric cancer surgery in hospitals worldwide, focusing on the effect of disease stage and complications on postoperative mortality. Methods: This was a multicentre, international prospective cohort study of consecutive adult patients undergoing surgery for primary breast, colorectal, or gastric cancer requiring a skin incision done under general or neuraxial anaesthesia. The primary outcome was death or major complication within 30 days of surgery. Multilevel logistic regression determined relationships within three-level nested models of patients within hospitals and countries. Hospital-level infrastructure effects were explored with three-way mediation analyses. This study was registered with ClinicalTrials.gov, NCT03471494. Findings: Between April 1, 2018, and Jan 31, 2019, we enrolled 15 958 patients from 428 hospitals in 82 countries (high income 9106 patients, 31 countries; upper-middle income 2721 patients, 23 countries; or lower-middle income 4131 patients, 28 countries). Patients in LMICs presented with more advanced disease compared with patients in high-income countries. 30-day mortality was higher for gastric cancer in low-income or lower-middle-income countries (adjusted odds ratio 3·72, 95% CI 1·70–8·16) and for colorectal cancer in low-income or lower-middle-income countries (4·59, 2·39–8·80) and upper-middle-income countries (2·06, 1·11–3·83). No difference in 30-day mortality was seen in breast cancer. The proportion of patients who died after a major complication was greatest in low-income or lower-middle-income countries (6·15, 3·26–11·59) and upper-middle-income countries (3·89, 2·08–7·29). Postoperative death after complications was partly explained by patient factors (60%) and partly by hospital or country (40%). The absence of consistently available postoperative care facilities was associated with seven to 10 more deaths per 100 major complications in LMICs. Cancer stage alone explained little of the early variation in mortality or postoperative complications. Interpretation: Higher levels of mortality after cancer surgery in LMICs was not fully explained by later presentation of disease. The capacity to rescue patients from surgical complications is a tangible opportunity for meaningful intervention. Early death after cancer surgery might be reduced by policies focusing on strengthening perioperative care systems to detect and intervene in common complications. Funding: National Institute for Health Research Global Health Research Unit

Comprensión y Producción de Lenguaje I - HU543 - 202101

Descripción: Comprensión y Producción de Lenguaje 1 es un curso de primer ciclo, que busca desarrollar las habilidades vinculadas con la comprensión lectora y la redacción de textos escritos formales y adecuados a una situación comunicativa determinada. Por ello, durante el curso, las actividades posibilitarán que el estudiante reflexione sobre cómo el lenguaje es una herramienta que nos permite entender la realidad (comprensión) y comunicar adecuadamente nuestras ideas sobre ella (producción). Esta reflexión se realizará con énfasis en el uso del lenguaje en las redes sociales, espacio que se ha constituido como un nuevo lugar para la divulgación de asuntos diversos: desde temas de ocio o entretenimiento hasta temas académicos, científicos y políticos. En ese sentido, este curso propone que el alumno asuma el rol de un ciudadano crítico, es decir, aquella persona que no solo consume información, sino que produce contenido a partir de una investigación en fuentes confiables. Considerando lo explicado, nuestros alumnos no solo serán capaces de redactar un texto escrito formal de acuerdo con las necesidades comunicativas del ámbito universitario y de la sociedad actual, sino que podrán transformarlo en un texto multimodal (el cual involucra diferentes medios de comunicación: visual, auditivo, imagen, texto, entre otros) que tenga sentido en las redes sociales, lugar de interacción real con sus lectores. Estos productos comunicativos deberán presentar una organización conveniente, un desarrollo sólido y suficiente (lo que implica una lectura crítica de las fuentes de información), y una escritura acorde con la normativa vigente. 3 Propósito: El curso desarrolla la competencia de comunicación escrita, en el nivel 1; es decir, el estudiante es capaz de construir mensajes coherentes y sólidos que se adecúan a la situación y propósito comunicativo. Este desarrollo le permite la generación y construcción de nuevas ideas, lo cual es relevante para su vida académica y profesional. La actual sociedad de la información y el conocimiento, caracterizada por la disrupción, la innovación y la complejidad en las formas de comunicación mediadas por la tecnología, enfrenta al estudiante y al profesional a nuevos retos en las maneras de comunicar aquello que conoce y que construye. En este escenario, la competencia comunicativa escrita adquiere protagonismo como herramienta para transmitir el conocimiento creado. El curso se alinea con esta exigencia, pues contribuye a que el estudiante responda exitosamente a las demandas comunicativas del contexto académico, y a que el egresado pueda desenvolverse idóneamente en el campo profesional y laboral

Clínica Integrada - ME210 - 202101

Curso de especialidad, de la carrera de medicina, de carácter teórico- práctico del ciclo 7, en el que los estudiantes integran conocimientos previos con la anamnesis, el examen físico y establecen el diagnostico por síndromes o problemas y el plan de trabajo. El curso de Clínica integrada busca desarrollar las competencias generales de comunicación escrita y comunicación oral(nivel 2) y las competencias específicas de práctica clínica-diagnóstico (nivel 2) y profesionalismo-sentido ético y legal y responsabilidad profesional(nivel 2). La integración de conocimientos en la historia clínica, permitirá al estudiante, plantear un adecuado diagnóstico, plan de trabajo para la atención de su futuro paciente