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Retinoid orphan receptor gamma t (rorγt) promotes inflammatory eosinophilia but is dispensable for innate immune-mediated colitis

by Alvaro Torres-Huerta, Katelyn Ruley-Haase, Theodore Reed, Antonia Boger-May, Derek Rubadeux, Lauren Mayer, Arpitha Mysore Rajashekara, Morgan Hiller, Madeleine Frech, Connor Roncagli, Cameron Pedersen, Mary Catherine Camacho, Lauren Hollmer, Lauren English, Grace Kane, David L. Boone

Inflammatory bowel diseases (IBD) result from uncontrolled inflammation in the intestinal mucosa leading to damage and loss of function. Both innate and adaptive immunity contribute to the inflammation of IBD and innate and adaptive immune cells reciprocally activate each other in a forward feedback loop. In order to better understand innate immune contributions to IBD, we developed a model of spontaneous 100% penetrant, early onset colitis that occurs in the absence of adaptive immunity by crossing villin-TNFAIP3 mice to RAG1-/- mice (TRAG mice). This model is driven by microbes and features increased levels of innate lymphoid cells in the intestinal mucosa. To investigate the role of type 3 innate lymphoid cells (ILC3) in the innate colitis of TRAG mice, we crossed them to retinoid orphan receptor gamma t deficient (Rorγt-/-) mice. Rorγt-/- x TRAG mice exhibited markedly reduced eosinophilia in the colonic mucosa, but colitis persisted in these mice. Colitis in Rorγt-/- x TRAG mice was characterized by increased infiltration of the intestinal mucosa by neutrophils, inflammatory monocytes, macrophages and other innate cells. RNA and cellular profiles of Rorγt-/- x TRAG mice were consistent with a lack of ILC3 and ILC3 derived cytokines, reduced antimicrobial factors, increased activation oof epithelial repair processes and reduced activation of epithelial cell STAT3. The colitis in Rorγt-/- x TRAG mice was ameliorated by antibiotic treatment indicating that microbes contribute to the ILC3-independent colitis of these mice. Together, these gene expression and cell signaling signatures reflect the double-edged sword of ILC3 in the intestine, inducing both proinflammatory and antimicrobial protective responses. Thus, Rorγt promotes eosinophilia but Rorγt and Rorγt-dependent ILC3 are dispensable for the innate colitis in TRAG mice.

Evolution of the data and methods in real-world COVID-19 vaccine effectiveness studies on mortality: a scoping review protocol

Por: Stehlik · P. · Dowsett · C. · Camacho · X. · Falster · M. O. · Lim · R. · Nasreen · S. · Pratt · N. L. · Pearson · S.-A. · Henry · D.
Background

Early evidence on COVID-19 vaccine efficacy came from randomised trials. Many important questions subsequently about vaccine effectiveness (VE) have been addressed using real-world studies (RWS) and have informed most vaccination policies globally. As the questions about VE have evolved during the pandemic so have data, study design, and analytical choices. This scoping review aims to characterise this evolution and provide insights for future pandemic planning—specifically, what kinds of questions are asked at different stages of a pandemic, and what data infrastructure and methods are used?

Methods and analysis

We will identify relevant studies in the Johns Hopkins Bloomberg School of Public Health VIEW-hub database, which curates both published and preprint VE RWS identified from PubMed, Embase, Scopus, Web of Science, the WHO COVID Database, MMWR, Eurosurveillance, medRxiv, bioRxiv, SSRN, Europe PMC, Research Square, Knowledge Hub, and Google. We will include RWS of COVID-19 VE that reported COVID-19-specific or all-cause mortality (coded as ‘death’ in the ‘effectiveness studies’ data set).

Information on study characteristics; study context; data sources; design and analytic methods that address confounding will be extracted by single reviewer and checked for accuracy and discussed in a small group setting by methodological and analytic experts. A timeline mapping approach will be used to capture the evolution of this body of literature.

By describing the evolution of RWS of VE through the COVID-19 pandemic, we will help identify options for VE studies and inform policy makers on the minimal data and analytic infrastructure needed to support rapid RWS of VE in future pandemics and of healthcare strategies more broadly.

Ethics and dissemination

As data is in the public domain, ethical approval is not required. Findings of this study will be disseminated through peer-reviewed publications, conference presentations, and working-papers to policy makers.

Registration

https://doi.org/10.17605/OSF.IO/ZHDKR

Impact of virtual reality‐based therapy on post‐stroke depression: A systematic review and meta‐analysis of randomized controlled trials

Abstract

Background

Post-stroke depression is the most common neuropsychiatric consequence and reduces rehabilitation effectiveness. However, the efficacy of virtual reality (VR) on mental health treatment for patients after a stroke is uncertain.

Aims

The aim of this study was to evaluate the efficacy of VR as a co-adjuvant form of treatment to reduce depression in stroke patients admitted to neurorehabilitation units.

Methods

We systematically searched medical databases including PubMed, CINAHL, PsycINFO, Embase, Cochrane Library, Web of Science, and ClinicalTrials.gov from inception to November 16, 2023. Clinical trials comparing the use of VR as an adjuvant form of treatment in stroke patients' rehabilitation with the usual treatment were included. Pooled standardized mean differences were calculated using a random-effects model. Subgroup analyses were performed according to type of stroke, VR characteristics, and the scale used to measure depression. Meta-regression analysis was performed for intervention duration and to determine the mean age of the participants.

Results

Eight studies and 388 stroke patients were included. The VR interventions were associated with a lower risk of depression in patients (ES = −0.69; 95% CI [−1.05, −0.33]; I 2 = 57.6%; p ≤ .02). The estimates were not affected by the type of stroke, the type of VR used, the blinding process, the type of scale used to detect depression, the duration of the intervention (weeks and minutes), and the total number of sessions. Meta-regression shows that younger samples (p = .00; 95% CI [0.01, 0.08) and longer interventions (p = < .05; 95% CI [−0.00, −0.00) lead to a greater reduction in depression.

Linking Evidence to Action

This review provides an important basis for treating depression in patients after a stroke. Professionals working in stroke neurorehabilitation units should consider VR as a form of co-adjuvant treatment for depression in patients.

Systematic Review Registration

CRD42022303968.

Experiencia vivida durante el climaterio por mujeres de zonas rurales de Asientos, Aguascalientes

Objetivo: Conocer la experiencia que tienen las mujeres que cursan la etapa del climaterio y que viven en zona rural del municipio de Asientos, Aguascalientes. Introducción: El cuidado de enfermería busca la integridad de la persona en todas sus esferas de desarrollo y con ello mejora calidad de vida. Metodología: Estudio cualitativo con enfoque fenomenológico hermenéutico de Heiddeger. Participaron 7 mujeres. Para la recolección de la información se realizaron siete entrevistas fenomenológicas, para garantizar la calidad del estudio. Resultados: Las entrevistas tuvieron una duración aproximada de 40 minutos. Se obtuvo 9 unidades de significado, las cuales se dividieron en dos grupos: óntico y ontológico. En las unidades de significado óntico se incluyó: identificación deficiente del climaterio, angustia en el climaterio y el sorge y el climaterio. El otro grupo abarca las unidades de significado ontológico integrado por: el deseo sexual en tinieblas, ausencia de compañero, el mundo familiar y el climaterio, trascendencia en el climaterio, sufrimiento en el climaterio. Conclusión: Las mujeres climatéricas tienen una influencia sobre el entorno sociocultural, patrones repetitivos y conocimientos escasos del tema.

Mujer cisgénero en situación de trabajo sexual: “nos ven como el foco infeccioso o como el virus andante”

Objetivo principal: Explorar las barreras percibidas para el autocuidado de la salud sexual de una mujer cisgénero de 57 años en situación de trabajadora sexual. Metodología: Se abordó un relato biográfico de naturaleza cualitativa, constructivista y fenomenológica. Resultados principales: Del análisis sistemático y de contenido, emergieron los temas: el trabajo sexual como una alternativa de vida; el estigma y la discriminación por la identidad ocupacional; la falta de una atención en salud preventiva, humanizada e incluyente; la necesaria autoestima para autocuidarse; la psicología informal como método de cribaje del cliente; el saber profesional en prácticas protectoras y de cuidado; las brechas y dificultades para el uso del condón masculino; y la necesidad de una política pública con mirada de género e inclusiva. Conclusión: La narrativa refleja la necesidad de afrontar las barreras para el autocuidado de la salud sexual, mediante metodologías participativas e inclusivas que promuevan la cooperación de políticas, estrategias e intervenciones en salud preventiva congruentes con las necesidades de las mujeres trabajadoras sexuales.

Detección precoz de lesiones oculares en una unidad de cuidados intensivos pediátricos: Elaboración y validación de un cuestionario

Objetivo principal: Elaboración y validación de un cuestionario sobre detección precoz de lesiones oculares en el paciente crítico pediátrico. Metodología: Estudio descriptivo de validación de contenido de un cuestionario. Se seleccionó bibliografía científica, se redactaron los ítems y se validó el contenido mediante un panel de 8 expertos con experiencia en unidades de cuidados intensivos pediátricos. Resultados principales: 53 artículos relacionados con la aparición de daño ocular en unidades de cuidados intensivos fueron seleccionados. Se agruparon los factores de riesgo y se incluyeron aquellos que superaron la valoración de un panel de expertos. Conclusión principal: el contenido de este cuestionario para detectar lesiones oculares en unidades de cuidados intensivos pediátricos es un instrumento repre-sentativo, por lo que puede usarse en estudios posteriores para establecer su fiabilidad, validez, viabilidad y sensibilidad al cambio.

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