Search

Antecedentes: sobre la base de la bibliografía revisada y los resultados de supervivencia global y libre de enfermedad con diferentes márgenes de resección, se plantea la hipótesis de que márgenes < 5mm son suficientes para lograr una tasa de supervivencia global y comparables a las obtenidas con márgenes mayores. Objetivo: evaluar la supervivencia global y la supervivencia específica a 3 y 5 años de los pacientes con carcinomas escamosos de cavidad oral, en función de los márgenes quirúrgicos obtenidos. Material y métodos: se reclutaron entre enero de 2010 y diciembre de 2017 81 pacientes operados, 57,1%hombres, con una edad media de 60,49 años. Resultados: en el análisis multivariado en función de la supervivencia global y libre de enfermedad, resultaron variables pronósticas significativas el grado de diferenciación tumoral (p = 0,033), la invasión ganglionar extracapsular (p = 0,001) y la infiltración perineural (p = 0,000). Se pudo observar que no hay diferencias en la supervivencia libre de enfermedad de los diferentes grupos evaluados sobre la base de los márgenes quirúrgicos, pero se cree que la radioterapia posoperatoria estaría confundiendo la importancia real de los márgenes, debido a que la mayoría de los pacientes que presentaban márgenes cercanos fueron sometidos a radioterapia posoperatoria. Conclusiones: las variables analizadas concuerdan con la bibliografía en el sentido de que los únicos factores pronósticos resultan las características histológicas. Si bien existen muchos trabajos que analizan los márgenes en el carcinoma escamoso de cavidad oral, todavía no hay consenso en cuanto al valor pronóstico de los márgenes cercanos (1-5 mm). Background: Based on the literature reviewed and the results of overall and disease-free survival with different surgical margins, we hypothesized that margins < 5mm are sufficient to achieve and overall survival rate and are comparable to those obtained with larger margins. Objective: The primary outcome of the present study was to evaluate overall survival and specific survival at 3 and 5 years of patients with squamous cell carcinoma of the oral cavity according to the surgical margins obtained. Material and methods: Between January 2010 and December 2017, 81 patients underwent surgery; 57.1% were men and mean age was 60.49 years. Results: At multivariate analysis, tumor differentiation (p = 0.033), extracapsular lymph node invasion (p = 0.001) and perineural invasion (p = 0.000) were identified as significant predictors of overall survival and disease-free survival. There were no differences in disease-free survival in the different groups evaluated based on the surgical margins. Yet, postoperative radiotherapy may actually obscure the importance of margins since most patients with close margins underwent postoperative radiotherapy. Conclusions: The variables analyzed in this paper are consistent with the literature in that only histological characteristics are prognostic factors. Although there are many studies analyzing the surgical margins in squamous carcinoma of the oral cavity, there is still no consensus regarding the prognostic value of close margins (1-5 mm).

El proyecto desarrollado procuró aportar procedimientos computacionales adecuados para analizar la relación clínica entre el microbioma intestinal y la presencia de patologías tales como el cáncer de colon y la enfermedad de Crohn. Utilizando un sistema operativo biolinux y el software Superfocus se trabajó con conjuntos de datos formados inicialmente por las secuencias de ADN obtenidas de microbiomas de pacientes. Las muestras fueron extraídas de repositorios metagenómicos internacionales. Mediante los procesos realizados se obtuvieron distribuciones de abundancia de carácter taxonómico y funcional. A partir de ellas se aplicaron métodos para construir la matriz de distancia entre secuencias. Para esta tarea se utilizó la distancia de Jensen-Shannon entre distribuciones. Usando la matriz de distancias se armaron clusters mediante la aplicación del algoritmo PAM y se evaluó la consistencia de los agrupamientos obtenidos. De tal forma se estableció una “pipeline”deprocedimientos, programados en lenguaje R, para llegar a agrupamientos de microbiomas que representaran enterotipos clínicos. Para muestras relacionadas con la Enfermedad de Crohna partir de la distribución de abundancia taxonómica de los microbiomas se analizó la relación entre el diagnóstico clínico y los clusters obtenidos aplicando el método de componentes principales. El trabajo consolidó el conocimiento necesario para afrontar próximos estudios a partir de muestras de pacientes locales en la continuidad de la línea de investigación. Fil: Santa María, Cristóbal Raúl. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: López, Luis. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: Soria, Marcelo Abel. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: Martínez, Pablo Witold. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: Otaegui, Juan Carlos. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: Santa María, Victoria. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: Galanternik, Fernando. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina. Fil: Ávila, Laura. Universidad Nacional de La Matanza. Departamento de Ingeniería e Investigaciones Tecnológicas; Argentina.

Background: Pregnant women with COVID-19 are at an increased risk of severe COVID-19 illness as well as adverse pregnancy and birth outcomes. Many countries are vaccinating or considering vaccinating pregnant women with limited available data about the safety of this strategy. Early identification of safety concerns of COVID-19 vaccines, including their components, or their technological platforms is therefore urgently needed., Methods: We conducted a rapid systematic review, as the first phase of an ongoing full systematic review, to evaluate the safety of COVID-19 vaccines in pregnant women, including their components, and their technological platforms (whole virus, protein, viral vector or nucleic acid) used in other vaccines, following the Cochrane methods and the PRISMA statement for reporting (PROSPERO-CRD42021234185).We searched literature databases, COVID-19 and pregnancy registries from inception February 2021 without time or language restriction and explored the reference lists of relevant systematic reviews retrieved. We selected studies of any methodological design that included at least 50 pregnant women or pregnant animals exposed to the vaccines that were selected for review by the COVAX MIWG in August 2020 or their components or platforms included in the COVID-19 vaccines, and evaluated adverse events during pregnancy and the neonatal period.Pairs of reviewers independently selected studies through the COVIDENCE web software and performed the data extraction through a previously piloted online extraction form. Discrepancies were resolved by consensus., Results: We identified 6768 records, 256 potentially eligible studies were assessed by full-text, and 37 clinical and non-clinical studies (38 reports, involving 2,397,715 pregnant women and 56 pregnant animals) and 12 pregnancy registries were included.Most studies (89%) were conducted in high-income countries. The most frequent study design was cohort studies (n=21), followed by surveillance studies, randomized controlled trials, and registry analyses. Most studies (76%) allowed comparisons between vaccinated and unvaccinated pregnant women (n=25) or animals (n=3) and reported exposures during the three trimesters of pregnancy.The most frequent exposure was to AS03 adjuvant in the context of A/H1N1 pandemic influenza vaccines (n=24), followed by aluminum-based adjuvants (n=11). Aluminum phosphate was used in Respiratory Syncytial Virus Fusion candidate vaccines (n=3) and Tdap vaccines (n=3). Different aluminum-based adjuvants were used in hepatitis vaccines. The replication-deficient simian adenovirus ChAdOx1 was used for a Rift Valley fever vaccine. Only one study reported exposure to messenger RNA (mRNA) COVID-19 vaccines that also used lipid nanoparticles. Except for one preliminary report about A/H1N1 influenza vaccination (adjuvant AS03) - corrected by the authors in a more thorough analysis, all studies concluded that there were no safety concerns., Conclusion: This rapid review found no evidence of pregnancy-associated safety concerns of COVID-19 vaccines that were selected for review by the COVAX MIWG or of their components or platforms when used in other vaccines. However, the need for further data on several vaccine platforms and components is warranted given their novelty. Our findings support current WHO guidelines recommending that pregnant women may consider receiving COVID-19 vaccines, particularly if they are at high risk of exposure or have comorbidities that enhance the risk of severe disease.