Diabetes and the Microvasculature of the Bone and Marrow.

PURPOSE OF REVIEW: The purpose of this review is to highlight the evidence of microvascular dysfunction in bone and marrow and its relation to poor skeletal outcomes in diabetes mellitus. RECENT FINDINGS: Diabetes mellitus is characterized by chronic hyperglycemia, which may lead to microangiopathy and macroangiopathy. Micro- and macroangiopathy have been diagnosed in Type 1 and Type 2 diabetes, coinciding with osteopenia, osteoporosis, enhanced fracture risk and delayed fracture healing. Microangiopathy has been reported in the skeleton, correlating with reduced blood flow and perfusion, vasomotor dysfunction, microvascular rarefaction, reduced angiogenic capabilities, and augmented vascular permeability. Microangiopathy within the skeleton may be detrimental to bone and manifest as, among other clinical abnormalities, reduced mass, enhanced fracture risk, and delayed fracture healing. More investigations are required to elucidate the various mechanisms by which diabetic microvascular dysfunction impacts the skeleton.

Video Modeling Use in Work Occupations for People With Autism: A Systematic Review.

IMPORTANCE: Occupational therapy practitioners should use evidence-based practices, such as video modeling, to address work occupations supporting people with autism spectrum disorder, including those with co-occurring intellectual and developmental disabilities. OBJECTIVE: To examine the evidence and relevance of video modeling supporting engagement in work occupations for people with autism and to translate these findings to occupational therapy practice. DATA SOURCES: Cochrane Collection Plus, CINAHL, PubMed, ERIC, ProQuest, and peer-reviewed occupational therapy literature from 2008 to 2018. Study Selection and Data Collection: This review followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Study selection and data collection focused on occupational therapy scope of practice, autism spectrum disorder, co-occurring intellectual and developmental disabilities, video modeling, and work occupations for people age 16 yr and older. FINDINGS: A total of 464 articles were screened. Six articles met inclusion criteria. Results indicated moderate evidence for video modeling to support work occupations for people with autism, specifically employment seeking and acquisition and specific job-performance skills. Samples were limited to people younger than age 28 yr and represented varied intellectual abilities, indicating potential for benefits across the spectrum of cognitive functioning. CONCLUSIONS AND RELEVANCE: This systematic review highlights the promising potential of video modeling to address work occupations for people with autism. However, more rigorous effectiveness research is needed, including studies by occupational therapy practitioners. What This Article Adds: Occupational therapy expertise paired with video modeling, as a strengths-based, client-centered, customizable, socially acceptable intervention, can provide meaningful support for work occupations.

Two-part predictive modeling for COVID-19 cases and deaths in the U.S.

COVID-19 prediction has been essential in the aid of prevention and control of the disease. The motivation of this case study is to develop predictive models for COVID-19 cases and deaths based on a cross-sectional data set with a total of 28,955 observations and 18 variables, which is compiled from 5 data sources from Kaggle. A two-part modeling framework, in which the first part is a logistic classifier and the second part includes machine learning or statistical smoothing methods, is introduced to model the highly skewed distribution of COVID-19 cases and deaths. We also aim to understand what factors are most relevant to COVID-19's occurrence and fatality. Evaluation criteria such as root mean squared error (RMSE) and mean absolute error (MAE) are used. We find that the two-part XGBoost model perform best with predicting the entire distribution of COVID-19 cases and deaths. The most important factors relevant to either COVID-19 cases or deaths include population and the rate of primary care physicians.

The Pituitary Adenylate Cyclase-Activating Polypeptide (PACAP) System of the Central Amygdala Mediates the Detrimental Effects of Chronic Social Defeat Stress in Rats.

Many psychiatric diseases stem from an inability to cope with stressful events, as chronic stressors can precipitate or exacerbate psychopathologies. The neurobiological mechanisms underlying the response to chronic stress and the resulting anxiety states remain poorly understood. Stress neuropeptides in the extended amygdala circuitry mediate the behavioral response to stress, and hyperactivity of these systems has been hypothesized to be responsible for the emergence of persistent negative outcomes and for the pathogenesis of anxiety-related and trauma-related disorders. Pituitary adenylate cyclase-activating polypeptide (PACAP) and its receptor PAC1R are highly expressed within the central amygdala (CeA) and play a key role in stress regulation. Here, we used chronic social defeat stress (CSDS), a clinically relevant model of psychosocial stress that produces robust maladaptive behaviors in rodents. We found that 10 days of CSDS cause a significant increase in PACAP levels selectively in the CeA of rats, as well as an increase in PAC1R mRNA. Using a viral vector strategy, we found that PAC1R knock-down in the CeA attenuates the CSDS-induced body weight loss and prevents the CSDS-induced increase in anxiety-like behavior. Notably, CSDS animals display reduced basal corticosterone (CORT) levels and PAC1R knock-down in CeA further reduce them. Finally, the CeA PAC1R knock-down blocks the increase in corticotropin-releasing factor (CRF) immunoreactivity induced by CSDS in CeA. Our findings support the notion that the persistent activation of the PACAP-PAC1R system in the CeA mediates the behavioral outcomes of chronic psychosocial stress independently of the hypothalamic-pituitary-adrenal axis, perhaps via the recruitment of the CRF system.

Valoración de la fragilidad en un centro de diálisis. ¿Son más frágiles los pacientes con diabetes? / Fragility assessment in a dialysis center. Are patients with diabetes more fragile than others?

Introducción: El incremento en la inclusión de personas de edad avanzada a los programas de hemodiálisis se relaciona con un aumento de la prevalencia de fragilidad, considerada predictora de discapacidad y asociada a eventos adversos de salud. Dado su carácter reversible, es importante hacer un cribaje para mejorar la práctica clínica.Objetivo: Evaluar el grado de fragilidad y estado funcional del paciente en nuestra unidad de hemodiálisis y analizar las diferencias entre diabéticos y no diabéticos. Material y Método: Estudio observacional de corte transversal. La fragilidad se midió utilizando el fenotipo de Fried y la valoración funcional mediante las escalas Barthel, Lawton, Downton y la Short Physical Performance Battery. Se evaluó comorbilidad y riesgo de caídas con las escalas Charlson y Downton respectivamente. Se comparó entre grupos de diabéticos y no diabéticos y se analizó la relación entre la fragilidad y la edad, dependencia, comorbilidad y riesgo de caídas.Resultados: Se incluyeron 128 pacientes. El 45% tenían Diabetes. Los pacientes con diabetes tenían una edad media mayor que los no diabéticos (74,2±11 vs 67,8±15 años) y mayor comorbilidad (Charlson 8,2±2,2 vs 5,8±2,4). El 25% de los pacientes presentaron fragilidad, observando una tendencia que sugirió mayor fragilidad, peor capacidad funcional y mayor grado de dependencia en los pacientes diabéticos, aunque de forma no significativa. Conclusiones: Una cuarta parte de la población estudiada presenta fragilidad, con una tendencia más acusada a padecerla los pacientes diabéticos, que podría estar relacionada con mayor edad, mayor comorbilidad y menor capacidad funcional que los no diabéticos.(AU)

Introduction: The increase in the inclusion of elderly people in hemodialysis programs is connected to a rise in the prevalence of their frailty, considered as well as a prediction of disability and often associated with adverse health events. Given its reversible nature, screening is essential to improve clinical practice.Objective: To assess the frailty index and the patient functional status in our hemodialysis unit, as well as analyze the differences between diabetics and non-diabetics.Material and Method: Observational cross-sectional study. Frailty was measured using the Fried phenotype and functional assessment using the Barthel, Lawton, Downton, and Short Physical Performance Battery scales. Comorbidity and fall risk were evaluated with the Charlson and Downton scales, respectively. Diabetic and nondiabetic groups were compared, as well as the relationship between frailty and age, dependency, comorbidity, and fall hazard was analyzed. Results: A hundred and twenty-eight patients were included in the study. 45% had diabetes. Diabetic patients had a higher average age than nondiabetics (74.2±11 vs 67.8±15 years) and higher comorbidity (Charlson 8.2±2.2 vs 5.8±2.4). Twenty-five percent of the patients had frailty, observing a trend that suggests higher frailty, worse functional capacity, and a higher degree of dependency in diabetic patients, although not significantly.Conclusions: A quarter of the sampled analyzed presents frailty, with a more pronounced tendency to suffer from it in the case of diabetic patients, which could be related to older age, higher comorbidity, and less functional capacity than non-diabetic people.(AU)