The nutritional status is a determinant of the immune response that promotes a cellular homeostasis. In particular, adequate selenium levels lead to a better antioxidant and immune response. The aim of this work is to assess whether blood selenium levels, at time of SARS-CoV-2 infection, have an impact on the development and severity of COVID-19. A systematic review and meta-analysis of comparative and descriptive studies using MeSH terms, selenium and COVID-19 was performed. We searched bibliographic databases up to 17 July 2022 in PubMed and ScienceDirect. Studies that reported data on blood selenium levels were considered. A total of 629 articles were examined by abstract and title, of which 595 abstracts were read, of which 38 were included in the systematic review and 11 in the meta-analysis. Meta-analysis was conducted to mean difference (MD) with a 95 % confidence interval (CI), and heterogeneity was tested by I² with random factors with a MD between selenium levels, mortality, morbidity and healthy subjects with a P-value of 0⋅05. Selenium levels were higher in healthy people compared to those in patients with COVID-19 disease (six studies, random effects MD: test for overall effect Z = 3⋅28 (P = 0⋅001), 97 % CI 28⋅36 (11⋅41–45⋅31), P < 0⋅00001), but without difference when compared with the degree of severity in mild, moderate or severe cases. In conclusion, the patients with active SARS-CoV-2 infection had lower selenium levels than the healthy population. More studies are needed to evaluate its impact on clinical severity through randomised clinical trials.

Introducción: La pandemia por COVID-19 provocó un aumento en los pacientes canalizados a las Unidades de Cuidados Intensivos (UCI). La aplicación de algoritmos de triaje provocó dilemas éticos cuando se tenía que decidir sobre el manejo clínico y/o el tratamiento de los pacientes. Objetivos: Analizar los principales aspectos bioéticos involucrados en los algoritmos usados en la toma de decisiones de triaje en la UCI durante la pandemia por COVID-19 a partir de una revisión de la literatura publicada en el periodo comprendido desde julio del año 2020 hasta febrero del año 2021. Métodos: Se realizó una búsqueda en Pubmed, SciELO, Ovid y Cochrane con los términos de búsqueda en inglés y español: “triage” (triaje), “Covid”, “SARS Cov-2”, “unidad de cuidados intensivo”, “ética”. Se excluyeron los artículos que no mencionaron algoritmos de intervención en la UCI, que no analizan la toma de decisiones, que no implican el entorno clínico, que no estuvieran indexados o artículos repetidos. Resultados: Se obtuvieron 45 artículos: los resúmenes fueron revisados de forma independiente por dos autores para eliminar sesgos, seleccionando 12 artículos que cumplían con los criterios de selección. Se encontró que los principales aspectos éticos que se tomaron en cuenta fueron: priorización inevitable, justicia y apoyo al rol del juicio clínico tomando en cuenta los derechos personales. Conclusiones: Es necesario realizar ajustes bioéticos para estandarizar la universalización de la toma de decisiones en momentos donde la capacidad de los servicios de salud se ve rebasada.

Background: This systematic review and meta-analysis evaluates the efficacy and safety of psilocybin-assisted psychotherapy (PAP) for adults with major depressive disorder (MDD). Methods: A PROSPERO-registered search (CRD42024561979) of CENTRAL, Scopus, PsycINFO, and MEDLINE (2010–2024) identified clinical trials assessing PAP. Risk of bias was assessed using RoB 2 for randomized controlled trials (RCTs), while non-randomized studies were appraised separately. Evidence certainty was evaluated using GRADE. Results: Ten trials were included; eight provided quantitative data. PAP was associated with large short-term reductions in depressive symptom severity. The overall pooled effect was large (d = 1.15, 95% CI 0.83–1.48), though within-subject designs yielded larger estimates (d = 1.63) than between-subject controlled comparisons (d = 0.96). Adverse events were transient and manageable, with no increased risk of serious adverse events on dosing days. Primary risk-of-bias concerns included functional unblinding. Conclusions: PAP may produce clinically meaningful, large short-term reductions in depressive symptoms. However, long-term efficacy remains understudied, and the overall certainty of evidence is low to moderate. Larger, rigorously blinded trials are required.

La presente investigación examina si el marco regulatorio mexicano sobre videojuegos es idóneo para proteger a personas menores de edad frente a riesgos sanitarios asociados al uso problemático. Primero reconstruye el origen del modelo de autorregulación estadounidense basado en clasificación por edades y contenidos, consolidado con el sistema ESRB y reforzado por Brown v. Entertainment Merchants Association. Después replantea el problema desde el bienestar digital y la categoría clínica de gaming disorder, mostrando que los riesgos relevantes no dependen principalmente del contenido violento, sino de variables de uso y diseño: tiempo de conexión, monetización, alteración del sueño y deterioro funcional. Enseguida analiza el caso chino como ejemplo de intervención estatal sobre patrones de uso en menores. Finalmente sostiene que la regulación mexicana vigente y la propuesta fiscal sobre “videojuegos violentos” son insuficientes, y propone un modelo interinstitucional, proporcional y basado en objetivos sanitarios verificables, compatible con proporcionalidad y protección reforzada.

BACKGROUND The COVID-19 pandemic underscored the challenge of swiftly disseminating research findings to a global audience. Language barriers further exacerbated disparities in access to timely scientific information, particularly for non-English speaking communities. The majority of COVID-19 research was published in English, limiting accessibility for Spanish-speaking populations. OBJECTIVE This paper aims to assess the reach and effectiveness of AccesoCovid.com, a platform designed to disseminate up-to-date COVID-19 research in both English and Spanish, addressing the language gap in scientific communication. METHODS AccesoCovid.com was developed through a partnership between the University of California, San Francisco (UCSF) and Universidad Nacional Autónoma de México (UNAM). The website’s performance and user engagement were evaluated using Google Analytics over a span of 2 years. Key metrics included user language preference, geographical distribution, and site traffic. The website summarized and translated 1032 articles on various COVID-19 topics, such as “Pharmaceutical Interventions and Vaccines.” RESULTS From February 2021 to February 2023, the platform attracted 57,000 users. Of the 43,000 unique new visitors, 84.2% (n=36,219) hailed from Spanish-speaking regions. The majority accessed the site organically through search engines, with 88.4% (n=38,000) of users arriving this way, while 5000 (11.6%) users accessed the site directly. Most users (n=30,894, 72.1%) preferred the Spanish version of the site. The website’s most accessed category was “Pharmaceutical Interventions and Vaccines,” followed by “Clinical Presentation and Management” and “Mental Health.” Regarding language distribution, 72.1% (n=30,894) of users primarily used Spanish; 21.4% (n=9215) used English; and 6.7% (n=2891) spoke other languages, including Portuguese, Chinese, and German. Geographically, the website attracted visitors from 179 countries, with the highest visitor counts from Mexico (n=12,342, 28.7%), Spain (n=6405, 14.9%), the United States (n=4416, 10.3%), and Peru (n=3821, 8.9%). CONCLUSIONS AccesoCovid.com successfully bridged a critical language gap in the dissemination of COVID-19 research. Its success underscores the pressing need for multilingual scientific resources. The platform demonstrated significant user engagement and reach, particularly in Spanish-speaking countries. This highlights the potential for similar platforms to ensure equitable access to scientific knowledge across diverse linguistic communities. Future efforts should focus on expanding to other languages and conducting formal evaluations to enhance user satisfaction and impact.

Background: The COVID-19 pandemic underscored the challenge of swiftly disseminating research findings to a global audience. Language barriers further exacerbated disparities in access to timely scientific information, particularly for non-English speaking communities. The majority of COVID-19 research was published in English, limiting accessibility for Spanish-speaking populations. Objective: This paper aims to assess the reach and effectiveness of AccesoCovid.com, a platform designed to disseminate up-to-date COVID-19 research in both English and Spanish, addressing the language gap in scientific communication. Methods: AccesoCovid.com was developed through a partnership between the University of California, San Francisco (UCSF) and Universidad Nacional Autónoma de México (UNAM). The website’s performance and user engagement were evaluated using Google Analytics over a span of 2 years. Key metrics included user language preference, geographical distribution, and site traffic. The website summarized and translated 1032 articles on various COVID-19 topics, such as “Pharmaceutical Interventions and Vaccines.” Results: From February 2021 to February 2023, the platform attracted 57,000 users. Of the 43,000 unique new visitors, 84.2% (n=36,219) hailed from Spanish-speaking regions. The majority accessed the site organically through search engines, with 88.4% (n=38,000) of users arriving this way, while 5000 (11.6%) users accessed the site directly. Most users (n=30,894, 72.1%) preferred the Spanish version of the site. The website’s most accessed category was “Pharmaceutical Interventions and Vaccines,” followed by “Clinical Presentation and Management” and “Mental Health.” Regarding language distribution, 72.1% (n=30,894) of users primarily used Spanish; 21.4% (n=9215) used English; and 6.7% (n=2891) spoke other languages, including Portuguese, Chinese, and German. Geographically, the website attracted visitors from 179 countries, with the highest visitor counts from Mexico (n=12,342, 28.7%), Spain (n=6405, 14.9%), the United States (n=4416, 10.3%), and Peru (n=3821, 8.9%). Conclusions: AccesoCovid.com successfully bridged a critical language gap in the dissemination of COVID-19 research. Its success underscores the pressing need for multilingual scientific resources. The platform demonstrated significant user engagement and reach, particularly in Spanish-speaking countries. This highlights the potential for similar platforms to ensure equitable access to scientific knowledge across diverse linguistic communities. Future efforts should focus on expanding to other languages and conducting formal evaluations to enhance user satisfaction and impact.