Effect of an acute long-duration exercise bout on skeletal muscle lipid droplet morphology, GLUT 4 protein, and perilipin protein expression.

PURPOSE: Smaller lipid droplet morphology and GLUT 4 protein expression have been associated with greater muscle oxidative capacity and glucose uptake, respectively. The main purpose of this study was to determine the effect of an acute long-duration exercise bout on skeletal muscle lipid droplet morphology, GLUT4, perilipin 3, and perilipin 5 expressions. METHODS: Twenty healthy men (age 24.0 ± 1.0 years, BMI 23.6 ± 0.4 kg/m2) were recruited for the study. The participants were subjected to an acute bout of exercise on a cycle ergometer at 50% VO2max until they reached a total energy expenditure of 650 kcal. The study was conducted after an overnight fast. Vastus lateralis muscle biopsies were obtained before and immediately after exercise for immunohistochemical analysis to determine lipid, perilipin 3, perilipin 5, and GLUT4 protein contents while GLUT 4 mRNA was quantified using RT-qPCR. RESULTS: Lipid droplet size decreased whereas total intramyocellular lipid content tended to reduce (p = 0.07) after an acute bout of endurance exercise. The density of smaller lipid droplets in the peripheral sarcoplasmic region significantly increased (0.584 ± 0.04 to 0.638 ± 0.08 AU; p = 0.01) while larger lipid droplets significantly decreased (p < 0.05). GLUT4 mRNA tended to increase (p = 0.05). There were no significant changes in GLUT 4, perilipin 3, and perilipin 5 protein levels. CONCLUSION: The study demonstrates that exercise may impact metabolism by enhancing the quantity of smaller lipid droplets over larger lipid droplets.

A Contribution to Measure Partnership Trust in Community-Based Participatory Research and Interventions With Latinx Communities in the United States.

Given the growing diversity in the United States, responsiveness to the needs of diverse communities is paramount. Latinx communities in the United States often state mistrust in outside institutions because of adverse experiences. Community-based participatory research (CBPR) is considered a trust-building process and is one approach to understand disparities. However, the conceptualization and evaluation of trust as a CBPR outcome are understudied. This article summarizes a community-engaged research process conducted for the cultural and linguistic refinement of a partnership trust survey tool to assess partnership trust as an outcome of CBPR (CBPR-PTS), by using Perinatal Awareness for Successful Outcomes (PASOs) as a case study and cross-cultural cognitive interviewing (CCCI) methodology. The participants were 21 diverse stakeholders of PASOs, a community-based health organization that serves the Latinx population in South Carolina. A modified version of the multidimensional measure of trust model informed instrument development. The team analyzed the CCCI data using compiling informal analysis to identify which survey items' wordings must be changed or adapted based on the participants' accounts. Sixteen of 28 questions subjected to CCCI required modifications due to translation errors, culturally specific errors, or general cognitive problems. The new survey instrument has 19 scales and 195 items categorized into nine dimensions of the modified multidimensional measure of trust model. CCCI was a useful tool to address the cross-cultural understanding issues of the CBPR-PTS. Measurement instruments should be able to capture the socioeconomic, cultural, and geographic/environmental variability of community stakeholders to help understand the diversity of the comprehension and views of the communities involved in disparities' reduction efforts.

Towards a typology of social protection for migrants and refugees in Latin America during the COVID-19 pandemic.

The COVID-19 health crisis has put to the test Latin America's already precarious social protection systems. This paper comparatively examines what type of social protection has been provided, by whom, and to what extent migrant and refugee populations have been included in these programmes in seven countries of the region during the COVID-19 pandemic, between March and December 2020. We develop a typology of models of social protection highlighting the assemblages of actors, different modes of protection and the emerging migrants' subjectification in Brazil, Chile, Colombia, Ecuador, Mexico, Peru, and Uruguay in relation to Non-Contributory Social Transfer (NCST) programmes and other actions undertaken by state and non-state actors. The analysis is based on 85 semi-structured interviews with representatives of national and local governments, International Organisations, Civil Society Organisations, and migrant-led organisations across 16 cities, and a systematic review of regulatory frameworks in the country-case studies. The proposed typology shows broad heterogeneity and complexity regarding different degrees of inclusion of migrant and refugee populations, particularly in pre-existing and new NCST programmes. These actions are furthering notions of migrant protection that are contingent and crisis-driven, imposing temporal limitations that often selectively exclude migrants based on legal status. It also brings to the fore the path-dependent nature of policies and practices of exclusion/inclusion in the region, which impact on migrants' effective access to social and economic rights, while shaping the broader dynamics of migration governance in the region.

Learning to make informed health choices: Protocol for a pilot study in schools in Barcelona.

Introduction: The Informed Health Choices (IHC) project has developed learning resources to teach primary school children (10 to 12-year-olds) to assess treatment claims and make informed health choices. The aim of our study is to explore both the students' and teachers' experience when using these resources in the context of Barcelona (Spain). Methods: During the 2019-2020 school year, we will conduct a pilot study with 4 th and 5 th-year primary school students (9 to 11-year-olds) from three schools in Barcelona. The intervention in the schools will include: 1) a workshop with the teachers, and 2) lessons to the students. The data collection will include: 1) assessment of the IHC resources by the teachers before the lessons, 2) non-participatory observations during the lessons, 3) semi-structured interviews with the students after a lesson, 4) assessment of the lessons by the teachers after a lesson, 5) treatment claim assessment by the students at the end of the lessons, and 6) assessment of the IHC resources by the teachers at the end of the lessons. We will use ad hoc questionnaires and guides to register the data. We will perform a quantitative and qualitative analysis of the data to explore understandability, desirability, suitability, usefulness, facilitators and barriers of the resources. The most relevant results will be discussed and some recommendations on how to use, how to adapt (if needed), and how to implement the IHC resources to this context will be agreed. The findings of the contextualization activities could inform the design of a cluster-randomised trial, to determine the effectiveness of the IHC resources in this context prior to scaling-up its use. Ethical considerations: The study protocol has obtained an approval exemption from the Ethics Committee of the Hospital de la Santa Creu i Sant Pau (Barcelona, Spain).

Lipedema: friend and foe.

Background Lipedema is a chronic disorder presenting in women during puberty or other times of hormonal change such as childbirth or menopause, characterized by symmetric enlargement of nodular, painful subcutaneous adipose tissue (fat) in the limbs, sparing the hands, feet and trunk. Healthcare providers underdiagnose or misdiagnose lipedema as obesity or lymphedema. Materials and methods The benefits (friend) and negative aspects (foe) of lipedema were collected from published literature, discussions with women with lipedema, and institutional review board approved evaluation of medical charts of 46 women with lipedema. Results Lipedema is a foe because lifestyle change does not reduce lipedema fat, the fat is painful, can become obese, causes gait and joint abnormalities, fatigue, lymphedema and psychosocial distress. Hypermobility associated with lipedema can exacerbate joint disease and aortic disease. In contrast, lipedema fat can be a friend as it is associated with relative reductions in obesity-related metabolic dysfunction. In new data collected, lipedema was associated with a low risk of diabetes (2%), dyslipidemia (11.7%) and hypertension (13%) despite an obese average body mass index (BMI) of 35.3 ± 1.7 kg/m2. Conclusion Lipedema is a painful psychologically distressing fat disorder, more foe than friend especially due to associated obesity and lymphedema. More controlled studies are needed to study the mechanisms and treatments for lipedema.