Dexamethasone Suppression Testing in a Contemporary Cohort with Adrenal Incidentalomas in Two U.S. Integrated Healthcare Systems

Autonomous cortisol secretion (ACS) from an adrenal adenoma can increase the risk for comorbidities and mortality. The dexamethasone suppression test (DST) is the standard method to diagnose ACS. A multi-site, retrospective cohort of adults with diagnosed adrenal tumors was used to understand patient characteristics associated with DST completion and ACS. Time to DST completion was defined using the lab value and result date; follow-up time was from the adrenal adenoma diagnosis to the time of completion or censoring. ACS was defined by a DST > 1.8 µg/dL (50 nmol/L). The Cox proportional hazards regression model assessed associations between DST completion and patient characteristics. In patients completing a DST, a logistic regression model evaluated relationships between elevated ACS and covariates. We included 24,259 adults, with a mean age of 63.1 years, 48.1% obese, and 28.7% with a Charlson comorbidity index ≥ 4. Approximately 7% (n = 1768) completed a DST with a completion rate of 2.36 (95% CI 2.35, 2.37) per 100 person-years. Fully adjusted models reported that male sex and an increased Charlson comorbidity index were associated with a lower likelihood of DST completion. Current or former smoking status and an increased Charlson comorbidity index had higher odds of a DST > 1.8 μg/dL. In conclusion, clinical policies are needed to improve DST completion and the management of adrenal adenomas.

Biallelic loss of GNAS in a patient with pediatric medulloblastoma

Genome sequencing was performed on matched normal and tumor tissue from a 6.5-yr-old boy with a diagnosis of recurrent medulloblastoma. A pathogenic heterozygous c.432+1G>A canonical splice donor site variant in GNAS was detected on analysis of blood DNA. Analysis of tumor DNA showed the same splice variant along with copy-neutral loss of heterozygosity on Chromosome 20 encompassing GNAS, consistent with predicted biallelic loss of GNAS in the tumor specimen. This case strengthens the evidence implicating GNAS as a tumor-suppressor gene in medulloblastoma and highlights a scenario in which therapeutics targeting the cAMP pathway may be of great utility.

Aplicación de la teoría de aprendizaje en el entrenamiento acerca de seguridad y salud para trabajadores inmigrantes en las lecherías

Resumen Con el propósito de prevenir lesiones y enfermedades ocupacionales, diseñamos un currículo de seguridad y salud para trabajadores inmigrantes en la industria lechera para aumentar el conocimiento, fomentar prácticas de seguridad, y reducir inequidades en la comunicación. El currículo se basa principalmente en la Taxonomía para el Aprendizaje Significativo-TAS ( Taxonomy of Significant Learning) e incorpora teorías de la conducta y de aprendizaje para adultos, así como también los principios de control de riesgos ocupacionales. Los entrenamientos se implementaron con 836 trabajadores de habla hispana de 67 lecherías en el estado de Wisconsin, en los Estados Unidos. El 67% de los trabajadores reportaron nunca haber recibido entrenamiento acerca de la seguridad en las lecherías, el 65% reportó haber trabajado en lecherías durante 5 años o menos, y el 26% de los trabajadores reportaron haber sufrido alguna lesión mientras trabajaban en la lechería. La evaluación cuantitativa y cualitativa de los entrenamientos sugiere que nuestro currículo efectivamente aumentó el conocimiento y fomentó la contemplación de prácticas de seguridad de los trabajadores. El aumento del conocimiento en general del 25% es estadísticamente significativo (p < .01). Los trabajadores recordaron al menos un concepto clave del contenido, expresaron sentirse confiados en adoptar al menos una conducta de seguridad, y mencionaron su intención de comunicar sus preocupaciones de seguridad a sus jefes en la lechería. De acuerdo a nuestro conocimiento, esta es la primera vez que se aplica la TAS en la educación acerca de seguridad y salud ocupacional. Este currículo puede ayudar a los productores en la industria lechera a cumplir con el entrenamiento anual de los trabajadores requerido por la Administración de Seguridad y Salud Ocupacional de los E. U. ( Occupational Safety and Health Administration-OSHA), ofreciendo este entrenamiento básico en seguridad y salud a sus trabajadores durante su etapa inicial de empleo.

Applying Learning Theory to Safety and Health Training for Hispanic Immigrant Dairy Workers

We designed a safety and health curriculum for dairy immigrant workers aiming to increase knowledge, encourage safe behavior, and reduce worker communication inequalities to prevent occupational injury and diseases. The design is largely based on the Taxonomy of Significant Learning and incorporated behavioral and adult learning theories and principles of occupational hazard control. Trainings were implemented with 836 Spanish-speaking workers from 67 farms in Wisconsin. Sixty-seven percent of workers reported never being trained before in dairy safety, 65% of these worked in dairy for 5 or fewers years, and 26% of workers reported being ever injured while working on dairy. Quantitative and qualitative evaluation of the trainings suggest that our curriculum successfully increased worker knowledge and promoted contemplation of safe practices. The overall knowledge gain of 25% was statistically significant ( p < .01). Workers recalled at least one key concept, expressed confidence of adopting at least one safety behavior, and mentioned their intention to communicate safety concerns to farmers. To our knowledge, this is the first Taxonomy of Significant Learning application to occupational safety and health education. Our curriculum can support dairy farmers' compliance with Occupational Safety and Health Administration's annual training requirements by providing our basic safety and health training to workers at early job stages.