Maternal PFOS exposure affects offspring development in Nrf2-dependent and independent ways in zebrafish (Danio rerio).

Perfluorooctanesulfonic acid (PFOS) is a ubiquitous legacy environmental contaminant detected broadly in human samples and water supplies. PFOS can cross the placenta and has been detected in cord blood and breastmilk samples, underscoring the importance of understanding the impacts of maternal PFOS exposure during early development. This study aimed to investigate the effects of a preconception exposure to PFOS on developmental endpoints in offspring, as well as examine the role of the transcription factor Nuclear factor erythroid-2-related factor (Nrf2a) in mediating these effects. This transcription factor regulates the expression of several genes that protect cells against oxidative stress including during embryonic development. Adult female zebrafish were exposed to 0.02, 0.08 or 0.14 mg/L PFOS for 1 week (duration of one cycle of oocyte maturation) and then paired with unexposed males from Nrf2a mutant or wildtype strains. Embryos were collected for two weeks or until completion of 5 breeding events. PFOS was maternally transferred to offspring independent of genotype throughout all breeding events in a dose-dependent manner, ranging from 2.77 to 23.72 ng/embryo in Nrf2a wildtype and 2.40 to 15.80 ng/embryo in Nrf2a mutants. Although embryo viability at collection was not impacted by maternal PFOS exposure, developmental effects related to nutrient uptake, growth and pancreatic ß-cell morphology were observed and differed based on genotype. Triglyceride levels were increased in Nrf2a wildtype eggs from the highest PFOS group. In Nrf2a wildtype larvae there was a decrease in yolk sac uptake while in Nrf2a mutants there was an increase. Additionally, there was a significant decrease in pancreatic ß-cell (islet) area in wildtype larvae from the 0.14 mg/L PFOS accompanied by an increase in the prevalence of abnormal islet morphologies compared to controls. Abnormal morphology was also observed in the 0.02 and 0.08 mg/L PFOS groups. Interestingly, in Nrf2a mutants there was a significant increase in the pancreatic ß-cell area in the 0.02 and 0.08 mg/L PFOS groups and no changes in the prevalence of abnormal islet morphologies. These results suggest that the regulation of processes like nutrient consumption, growth and pancreatic ß-cell development are at least partially modulated by the presence of a functional Nrf2a transcriptomic response. Overall, preconception exposure to environmental pollutants, such as PFOS, may impact the maturing oocyte and cause subtle changes that can ultimately impact offspring health and development.

The Nrf2a pathway impacts zebrafish offspring development with maternal preconception exposure to perfluorobutanesulfonic acid.

Since the voluntary phaseout of perfluorooctanesulfonic acid (PFOS), smaller congeners, such as perfluorobutanesulfonic acid (PFBS) have served as industrial replacements and been detected in contaminated aquifers. This study sought to examine the effects of a maternal preconception PFBS exposure on the development of eggs and healthy offspring. Adult female zebrafish received a one-week waterborne exposure of 0.08, 0.14, and 0.25 mg/L PFBS. After which, females were bred with non-exposed males and embryos collected over 5 successful breeding events. PFBS concentrations were detected in levels ranging from 99 to 253 pg/embryo in the first collection but were below the limit of quantitation by fourth and fifth clutches. Therefore, data were subsequently binned into early collection embryos in which PFBS was detected and late collections, in which PFBS was below quantitation. In the early collection, embryo 24 h survival was significantly reduced. In the late collection, embryo development was impacted with unique patterns emerging between Nrf2a wildtype and mutant larvae. Additionally, the impact of nutrient loading into the embryos was assessed through measurement of fatty acid profiles, total cholesterol, and triglyceride content. There were no clear dose-dependent effects, but again unique patterns were observed between the genotypes. Preconception PFBS exposures were found to alter egg and embryo development, which is mediated by direct toxicant loading in the eggs, nutrient loading into eggs, and the function of Nrf2a. These findings provide insight into the reproductive and developmental effects of PFBS and identify maternal preconception as a novel critical window of exposure.

Perceptions of Individuals with Parkinson's Disease about Quality of Life / Percepciones de pacientes con enfermedad de Parkinson sobre la calidad de vida / Percepções de pacientes com doença de Parkinson sobre a qualidade de vida

Abstract Introduction: Parkinson's disease is a neurodegenerative disorder manifested by motor and non-motor symptoms that compromise patients' quality of life. The instrument used to assess Parkinson's disease patients' quality of life is the Parkinson's Disease Questionnaire (PDQ-39). This study aims to identify issues related to quality of life from the patients' perspective, compare the results obtained with the aspects included in the PDQ-39, and describe some strategies that patients have adopted to overcome difficulties. Materials and methods: This is a qualitative and descriptive study based on a focus group consisting of six patients. Data were analyzed using the content analysis method. Results: Aspects related to all PDQ-39 domains were mentioned by the patients, highlighting those related to limitations on their mobility and daily activities, as well as aspects related to their emotional wellbeing. The patients did not mention some aspects of mobility that are included in the PDQ-39, but limitations in the domain of emotional wellbeing that are included in the PDQ-39 were detected. In order to overcome difficulties, patients devise various strategies that require social support. Conclusion: Understanding and reflecting on Parkinson's disease patients' perceptions of their quality of life contributes to our understanding of the disease and stimulates proposals for adequate clinical interventions to provide comprehensive care. It is suggested that the PDQ-39 be reviewed and adapted to the current context, taking into account the most recent knowledge and technological advances related to Parkinson's disease.

Resumen Introducción: la enfermedad de Parkinson es una patología neurodegenerativa, que se manifiesta por signos y síntomas motores y no motores, que comprometen la calidad de vida de los pacientes. El Parkinson Disease Questionnaire (PDQ-39) es el instrumento más utilizado para evaluar la calidad de vida en pacientes con esta enfermedad. Los objetivos del trabajo fueron identificar los aspectos relacionados con la Calidad de Vida desde la perspectiva de los pacientes, compararlos con los aspectos considerados por el PDQ-39 y describir las estrategias adoptadas por los pacientes para superar las dificultades. Materiales y métodos: estudio cualitativo, descriptivo. Se realizó un grupo focal con seis pacientes. Los datos fueron analizados usando el método de análisis de contenido. Resultados: aspectos relacionados a todos los dominios del PDQ-39 fueron mencionados por los pacientes, destacándose aquellos relacionados con las limitaciones de la movilidad y el desarrollo de actividades diarias, y aspectos relacionados con el bienestar emocional. No obstante, algunos aspectos considerados en el dominio movilidad del PDQ-39 no fueron mencionados, y fueron detectadas limitaciones del dominio bienestar emocional. Los pacientes diseñan diversas estrategias para superar las dificultades, en las que el soporte social es importante. Conclusión: conocer y reflexionar sobre las percepciones de persona con enfermedad de Parkinson sobre su calidad de vida contribuye para la comprensión de la enfermedad y auxilia la propuesta de intervenciones clínicas adecuadas para lograr el cuidado integral. Se sugiere la revisión y adaptación del PDQ-39 al contexto actual, los avances tecnológicos y de conocimientos sobre la enfermedad de Parkinson.

Resumo Introdução: a doença de Parkinson é uma patologia neurodegenerativa, que se manifesta por signos e sintomas motores e não motores, que comprometem a qualidade de vida dos pacientes. O Parkinson Disease Questionnaire (PDQ-39) é o instrumento mais utilizado para avaliar a qualidade de vida de em pacientes com esta doença. Os objetivos do trabalho foram identificar os aspetos relacionados com a Qualidade de Vida desde a perspectiva dos pacientes, compará-los com os aspetos considerados pelo PDQ-39 e descrever as estratégias adotadas pelos pacientes para superar as dificuldades. Materiais e métodos: estudo qualitativo, descritivo. Realizou-se um grupo focal com seis pacientes. Os dados foram analisados usando o método de análise de conteúdo. Resultados: aspetos relacionados a todos os domínios do PDQ-39 foram mencionados pelos pacientes, destacando-se aqueles relacionados com as limitações da mobilidade e o desenvolvimento de atividades diárias, e aspetos relacionados com o bem-estar emocional. No entanto, alguns aspectos considerados no domínio mobilidade do PDQ-39 não foram mencionados, e foram detectadas limitações do domínio bem-estar emocional. Os pacientes desenham diversas estratégias para superar as dificuldades, nas que o suporte social é importante. Conclusão: conhecer e reflexionar sobre as percepções de pessoas com Doença de Parkinson sobre sua qualidade de vida contribui para a compreensão da doença e auxilia a proposta de intervenções clínicas adequadas para conseguir o cuidado integral. Sugere-se a revisão e adaptação do PDQ-39 ao contexto atual, os avanços tecnológicos e de conhecimentos sobre a Doença de Parkinson.

Síndrome de Trousseau: a propósito de un caso / Troussauïs sindrome: purpose of a case

Se han descrito una variedad de vasculopatías asociadas al cáncer. Las vasculopatías paraneoplásicas, son aquellos síndromes vasculares asociados a cáncer, que ocurren a distancia del tumor primario o de las metástasis y que son inducidas por el cáncer a través de hormonas, inmunoglobulinas o mediadores humorales. El reconocimiento de estos síndromes paraneoplásicos es la importancia clínica por que su aparición puede ser el primer indicador de malignidad

Nesidioblastosis pancreática: reporte de un caso en paciente adulto / Pancreatic nesidioblastosis: report of a case in adult patient

La nesidioblastosis es el nombre que ha sido usado para describir el hiperinsulinismo congénito (HC). Es la causa más común de hipoglicemias en neonatos. Puede provocar convulsiones, daño cerebral, inclusive hasta la muerte. El hiperinsulinismo congénito es un problema conocido desde hace 45 años, pero no es sino hasta 1976 que el Dr. Charles A Stanley y el Dr. Lester Baker en el Hospital de Niños de Filadelfia identificaron el hiperinsulinismo congénito como la causa más común de hipoglicemias en niños. Reportaron entre 1965 y 1975 en niños menores de un año una prevalencia de 55 por ciento de HC en los casos de hipoglicemias. Han sido poco los casos reportados en adultos. Entre la patogenia se menciona un defecto en el receptor de sulfonilureas, que ocurre como una mutación en el ADN. Focos aislados de desorden en las células â del páncreas. En 1998 se describió un defecto genético que aumenta la actividad de la glutamato deshidrogenasa, lo que provoca un hiperinsulinismo e hiperamonemia. También se menciona un defecto autosómico dominante. El diagnóstico se hace comprobando la hipoglicemia, sin acidemia, cetonas bajas, ácidos grasos bajos y niveles elevados de insulina. Los métodos tradicionales para la detección de tumoraciones (Resonancia magnética, tomografía, ecografía, etc) son ineficaces en la mayoría de los casos. Las opciones para el tratamiento varían desde la utilización de diazóxido, un inhibidor de la secreción de insulina a través de la supresión de la acción de los receptores de sulfonilureas. El uso de octreocitido. Glucagon en algunos casos usado por vía endógena revierte los efectos de la hipoglicemia