Treatment Options for Failed Back Surgery Syndrome: An Umbrella Systematic Review of Systematic Reviews on the Effectiveness of Therapeutic Interventions.

Background: Failed back surgery syndrome (FBSS) is a common and incapacitating condition affecting patients with previous spine surgery in whom treatment approach can be challenging. This study aimed to summarize existing secondary studies and up-to-date randomized clinical trials (RCTs) that assess the effectiveness of available treatment options for FBSS. Methods: Systematic searches were carried out in five databases (PubMed, Cochrane, Scielo, Epistemonikos, and Google scholar) for all systematic reviews on the effectiveness of treatment options for FBSS published after 2012. Outcomes of interest were pain levels measured through visual analog scale or numeric rating scale, Oswestry Disability Index, and quality of life. Methodological and risk of bias assessments were performed with the AMSTAR-2 tool for systematic reviews and the Joanna Briggs Institute checklist for RCT. Prospective PROSPERO registration: CRD42022307609. Results: Fifteen studies, seven systematic reviews, and eight RCTs met the inclusion criteria and fulfilled the methodological quality assessment. Of the 15 included studies, 8 were on neurostimulation, 4 on adhesiolysis, 4 on epidural or intrathecal injections, and 3 on other treatment modalities. The risk of bias was low in seven studies, moderate in five, and high in three. Conclusions: Based on this systematic overview and the considerable heterogeneity among studies, the FBSS therapeutic approach must be individualized. FBSS treatment should start with conservative management, considering the implementation of neurostimulation, a technique with the most robust evidence of effective results, in cases of refractory axial or neuropathic pain. As the last resource, in light of the evidence found, more invasive procedures or new surgical interventions are indicated.

Nausea and Vomiting as Initial Manifestations of Pediatric NMOSD.

Intractable nausea and vomiting are commonly attributed to gastrointestinal (GI) conditions but can sometimes be a symptom of an underlying central nervous system disease. One potentially overlooked neurologic cause of intractable nausea and vomiting that is refractory to antiemetics is area postrema syndrome (APS). APS is a condition characterized by lesions of the dorsal caudal medulla and is considered a core clinical feature of neuromyelitis optica spectrum disorder (NMOSD). APS is present in up to 30% of patients ultimately diagnosed with NMOSD and can be the first presenting symptom of NMOSD in 12% of patients, as our case illustrates. Importantly, APS is highly responsive to immunotherapy. We present the case of a 14-year-old female with a history of migraines who presented to the emergency department multiple times for persistent nausea, vomiting, and hiccups. Multiple GI diagnoses were considered until she developed additional neurologic symptoms that prompted further workup and revealed the final diagnosis of NMOSD-APS. We posit that NMOSD-APS should be considered in the differential diagnosis for patients with intractable nausea and vomiting, especially in patients with a negative GI workup result and poor response to antiemetics.

A Dual Pharmacological Strategy against COVID-19: The Therapeutic Potential of Metformin and Atorvastatin.

Metformin (MET) and atorvastatin (ATO) are promising treatments for COVID-19. This review explores the potential of MET and ATO, commonly prescribed for diabetes and dyslipidemia, respectively, as versatile medicines against SARS-CoV-2. Due to their immunomodulatory and antiviral capabilities, as well as their cost-effectiveness and ubiquitous availability, they are highly suitable options for treating the virus. MET's effect extends beyond managing blood sugar, impacting pathways that can potentially decrease the severity and fatality rates linked with COVID-19. It can partially block mitochondrial complex I and stimulate AMPK, which indicates that it can be used more widely in managing viral infections. ATO, however, impacts cholesterol metabolism, a crucial element of the viral replicative cycle, and demonstrates anti-inflammatory characteristics that could modulate intense immune reactions in individuals with COVID-19. Retrospective investigations and clinical trials show decreased hospitalizations, severity, and mortality rates in patients receiving these medications. Nevertheless, the journey from observing something to applying it in a therapeutic setting is intricate, and the inherent diversity of the data necessitates carefully executed, forward-looking clinical trials. This review highlights the requirement for efficacious, easily obtainable, and secure COVID-19 therapeutics and identifies MET and ATO as promising treatments in this worldwide health emergency.

Virtual Reality and Serious Videogame-Based Instruments for Assessing Spatial Navigation in Alzheimer's Disease: A Systematic Review of Psychometric Properties.

Over the past decade, research using virtual reality and serious game-based instruments for assessing spatial navigation and spatial memory in at-risk and AD populations has risen. We systematically reviewed the literature since 2012 to identify and evaluate the methodological quality and risk of bias in the analyses of the psychometric properties of VRSG-based instruments. The search was conducted primarily in July-December 2022 and updated in November 2023 in eight major databases. The quality of instrument development and study design were analyzed in all studies. Measurement properties were defined and analyzed according to COSMIN guidelines. A total of 1078 unique records were screened, and following selection criteria, thirty-seven studies were analyzed. From these studies, 30 instruments were identified. Construct and criterion validity were the most reported measurement properties, while structural validity and internal consistency evidence were the least reported. Nineteen studies were deemed very good in construct validity, whereas 11 studies reporting diagnostic accuracy were deemed very good in quality. Limitations regarding theoretical framework and research design requirements were found in most of the studies. VRSG-based instruments are valuable additions to the current diagnostic toolkit for AD. Further research is required to establish the psychometric performance and clinical utility of VRSG-based instruments, particularly the instrument development, content validity, and diagnostic accuracy for preclinical AD screening scenarios. This review provides a straightforward synthesis of the state of the art of VRSG-based instruments and suggests future directions for research.

Timely delivery of PORT for head and neck squamous cell carcinoma in a county hospital.

Objectives: The objective of this study was to compare the rate of post-operative radiation therapy (PORT) initiation within 6 weeks for head and neck squamous cell carcinoma patients treated at a safety net, academic institutio between 2019 and 2021 versus those treated in 2022 after implementation of a new clinical pathway. Methods: A retrospective case-control study was performed at a single tertiary care, safety-net, academic institution. Patient demographics, tumor characteristics, dates of surgery, and other treatment dates were collected from the electronic medical record. The time from surgery to PORT was calculated. Patients who started radiation treatment within 42 days of surgery were regarded as having started PORT on time. The demographics, tumor characteristics, and rate of timely PORT for the two cohorts of patients were compared. Results: From 2018 to 2021, our rate of PORT initiation within 6 weeks of surgery was 12% (n = 57). In 2022, our rate of timely PORT was 88% (n = 16), p < 0.5. Patient demographics and characteristics were similar with the exception of marital status and use of free-flap reconstruction. The 2022 cohort was more likely to be single (p < 0.5), and all patients underwent free-flap reconstruction in 2022 (p < 0.05). Conclusion: Early referrals, frequent communication, and use of a secure registry were the key to the success found by our group despite the socioeconomic challenges of our underserved, safety-net hospital patient population. The changes made at our institution should serve as a template for other institutions seeking to improve the quality of care for their HNSCC patients.

Validación de las propiedades psicométricas de la Escala de Personalidad Tipo D en adultos colombianos

La personalidad tipo D se refiere a la vulnerabilidad frente al estrés psicológico, la cual se expresa en dos componentes: la afectividad negativa (AN) y la inhibición social (is), que pueden desencadenar un estado de estrés psicosocial que afecta la salud. El objetivo de este estudio fue analizar las propiedades psicométricas de la Escala de Personalidad Tipo D (DS-14) en población adulta colombiana. La muestra estuvo conformada por 456 adultos (41.7 % hombres y 58.3 % mujeres) colombianos entre los 18 y 86 años. El coeficiente de fiabilidad para las dos subescalas de la DS-14 fue de .73 (AN) y .72 (IS), y .79 para el puntaje total. Se analizó la validez concurrente con medidas de estrategias de afrontamiento resiliente y afrontamiento religioso. Los resultados evidencian validez interna y externa, dados los índices del análisis factorial exploratorio y confirmatorio.

Type D personality refers to vulnerability to psychological stress, which is expressed in two components: negative affectivity (NA) and social inhibition (si), which can trigger a state of psychosocial stress that affects health. The aim of this study was to analyze the psychometric properties of the Type D Personality Scale (DS-14) in the Colombian adult population. The sample consisted of 456 colombian adults (41.7 °% men and 58.3 °% women) between 18 and 86 years of age. The reliability coefficient for the two subscales of the DS-14 was .73 (NA) and .72 (SI), and .79 for the total score. Concurrent validity was analyzed with measures of resilient coping strategies and religious coping. The results show internal and external validity given the indices of the exploratory and confirmatory factor analysis.

Mayor uso de teleconsultas programadas y mensajería asincrónica del portal en atención primaria / Increased Use of Scheduled Teleconsultations and Asynchronous Portal Messaging in Primary Care

Introducción: durante la pandemia de COVID-19 hubo un auge sin precedentes de la telemedicina, probablemente por la forzada adopción de tecnología ante las medidas restrictivas. El presente estudio se propuso comparar la interacción y la comunicación entre médicos de cabecera (MC) y pacientes, antes y durante el período de pandemia, en términos de consultas ambulatorias programadas y mensajes del Portal de Salud. Materiales y métodos: corte transversal con muestreo consecutivo de turnos programados y mensajes, ocurridos entre las semanas epidemiológicas (SE) 10 y 23, de 2019 y 2020, respectivamente. Se incluyeron 147 médicos del Servicio de Medicina Familiar y Comunitaria, y una cápita de 73 427 pacientes afiliados al Plan de Salud del Hospital Italiano de Buenos Aires. Se realizó análisis cuantitativo y cualitativo. Resultados: hubo una reducción del 70% de las consultas presenciales (de 76 375 en 2019 a 23 200 en 2020) y un aumento concomitante de teleconsultas (de 255 en la SE13 a 1089 en la SE23). En simultáneo, los mensajes aumentaron sustancialmente (de 28 601 en 2019 a 84 916 en 2020), con un inicio abrupto al comienzo del confinamiento, y una tendencia decreciente a lo largo del tiempo. Antes de la pandemia, el contenido estuvo relacionado con órdenes electrónicas de estudios complementarios, control de resultados, recetas de medicación crónica y/o interconsultas a especialistas, mientras que los dominios más frecuentes durante la pandemia fueron necesidades informativas epidemiológicas, como medidas preventivas para COVID-19, vacuna antineumocócica, vacuna antigripal, casos o sospechas, resultados de hisopados, entre otras. Conclusión: el auge de las tecnologías de la comunicación e información durante la pandemia permitió dar continuidad a los procesos asistenciales en salud pese al distanciamiento físico. Hubo mayor utilización de mensajería por necesidades informativas de los pacientes, y la relación médico-paciente se ha modificado. (AU)

Introduction: during the COVID-19 pandemic, there was an unprecedented boom in telemedicine, probably due to the forced adoption of technology in the face of restrictive measures. This study aimed to compare the interaction and communication between general practitioners and patients before and during the pandemic based on scheduled outpatient consultations and Health Portal messages. Materials and methods: Cross-sectional study with a consecutive sampling of scheduled appointments and messages, occurring between epidemiological weeks (EW) 10 and 23 of 2019 and 2020, respectively. We included 147 physicians from the Family and Community Medicine Service and a capita of 73427 patients affiliated with the Hospital Italiano de Buenos Aires health plan. We conducted a quantitative and qualitative analysis. Results: there was a 70% reduction in face-to-face consultations (from 76375 in 2019 to 23200 in 2020) and a concomitant increase in teleconsultations (from 255 in EW13 to 1089 in EW23). Concurrently, messages increased substantially (from 28601 in 2019 to 84916 in 2020), with an abrupt onset at the beginning of confinement and a decreasing trend over time. Before the pandemic, the content involved electronic orders for complementary studies, outcome monitoring, chronic medication prescriptions, or expert consultations. The most frequent domains during the pandemic were epidemiological information needs, such as preventive measures for COVID-19, pneumococcal vaccine, influenza vaccine, cases or suspicions, and swab results, among others. Conclusion: the rise of communication and information technologies during the pandemic allowed the continuity of healthcare processes despite the physical distance. There was increased use of messaging for patients' information needs, and the doctor-patient relationship has changed. (AU)

Curso de investigación en Atención Primaria de la Salud: experiencia sobre módulo de búsqueda bibliográfica y gestores de citas / Research course in Primary Health Care: experience with the bibliographic search module and citation managers

La Federación Argentina de Medicina Familiar y General apoyó el desarrollo, la difusión y la implementación de una propuesta educativa sobre investigación en atención primaria. Consiste en 4 módulos independientes, destinado para miembros interesados/as, con 2 encuentros virtuales teórico-prácticos, que favorecieran el intercambio de opiniones y experiencias entre colegas. El objetivo del primer módulo fue proporcionar conocimiento, brindar pautas y ofrecer herramientas para la búsqueda bibliográfica y el uso de gestores de citas. Se realizó difusión mediante sociedades y redes sociales. Se incluyó una evaluación individual, que diera cuenta de lectura complementaria y la aplicación práctica de los contenidos. Se llevó a cabo en Junio, con 39 preinscripto/as, mayoritariamente residentes. Hubo 24 participantes efectivos (61%), asistieron 17 y 20 personas respectivamente, y 11 (46%) obtuvieron el certificado de aprobación por responder la consigna en tiempo y forma. En cuanto a los/as asistentes, hubo predominio de mujeres (79%), provenientes de Asociación Metropolitana de Medicina Familiar (25%), Asociación Cordobesa de Medicina Familiar y Comunitaria (16%), Asociación Misionera de Medicina General/Familiar y del Equipo de Salud (16%), Asociación Tucumana de Medicina Familiar, General y Comunitaria (12%), y otras minorías. Expresaron satisfacción, agradecimiento y reconocimiento por la actividad, destacando la buena predisposición de organizadores y equipo docente, la utilidad práctica de la temática, la evidente planificación, y el apoyo político-económico. Esta valiosa experiencia educativa (planteada como necesidad pendiente) resultó exitosa, ya que los/as participantes demostraron un alto nivel de interés, de asistencia de diferentes provincias, y de compromiso. Los certificados emitidos otorgan créditos educativos válidos para la recertificación (AU)

The Federación Argentina de Medicina Familiar y General supported the development, dissemination and implementation of an educational proposal on research in primary care. It consists of 4 independent modules, intended for interested members, with 2 virtual theoretical-practical meetings, which favored the exchange of opinions and experiences among colleagues. The objective of the first module was to provide knowledge, guidelines and tools for bibliographic search and the use of citation managers. Dissemination was carried out through societies and social networks. An individual evaluation was included, to account for complementary reading and the practical application of the contents. It was carried out in June, with 39 pre-registered participants, mostly residents. There were 24 effective participants (61%), 17 and 20 people attended respectively, and 11 (46%) obtained the certificate of approval for answering the instructions in due time and form. As for the attendees, there was a predominance of women (79%), coming from Asociación Metropolitana de Medicina Familiar (25%), Asociación Cordobesa de Medicina Familiar y Comunitaria (16%), Asociación Misionera de Medicina General/Familiar y del Equipo de Salud (16%), Asociación Tucumana de Medicina Familiar, General y Comunitaria (12%), and other minorities. They expressed satisfaction, gratitude, and recognition for the activity, highlighting the good predisposition of the organizers and teaching team, the practical usefulness of the subject matter, the evident planning, and the political-economic support. This valuable educational experience (raised as a pending need) was successful since the participants showed a high level of interest, attendance from different provinces, and commitment. The certificates issued grant educational credits valid for recertification (AU)

Cactus cladodes for dairy goats: what is the best fiber source?

This study evaluated the effect of different fiber sources supplied with cactus cladodes in diets on the intake and digestibility of nutrients, ingestive behavior, milk yield, and composition of dairy goats. The fiber sources were corn silage, sorghum silage, Digitaria pentzii Stent. hay, and sugarcane bagasse. Twelve Saanen goats with an average weight of 48.9 ± 7.3 kg and average production of 2.8 ± 0.7 kg of milk/day were assigned in three simultaneous 4 × 4 Latin squares (four animals, four treatments, and four experimental periods). There was no difference between the fiber sources for intake (P > 0.05) of dry matter (2.58 kg/day), organic matter (2.30 kg/day), crude protein (0.385 kg/day), neutral detergent fiber (0.895 kg/day), non-fibrous carbohydrates (0.858 kg/day), and metabolizable energy (5.66 Mcal/day). Also, the fiber sources did not influence dry matter and nutrient digestibility (P > 0.05). The association of cactus cladodes with silages, hay, and sugarcane bagasse did not change milk production, milk production corrected for 3.5% of fat and corrected for energy (2.78; 2.53 and 2,55 kg/day, respectively), in addition to milk composition (P > 0.05). No differences were observed in ingestive behavior (P > 0.05). Any fiber sources evaluated are recommended.

High Anti-Interferon-Alpha Autoantibody Levels in Severe/Critical COVID-19 Patients from Peru.

Innate immune responses through the production of type I interferon-α (anti-IFN-α) play an essential role in the defense against viruses. The autoantibodies (auto-Abs) anti-IFN-α are implicated in COVID-19 pathogenesis with higher levels among patients with worse prognoses. The study aimed to assess the levels of anti-IFN-α auto-Abs in Peruvian patients with severe/critical hospitalized COVID-19 compared to asymptomatic/mild COVID-19 outpatients and healthy controls. We analyzed 101 serum samples, including 56 (55.5%) severe/critical, 13 (12.3%) asymptomatic/mild COVID-19 patients, and 32 (32.2%) healthy controls, which we tested using a commercial ELISA anti-IFN-α-auto-Abs kit. We observed seropositivity of 48.2% (26/54) to anti-IFN-α auto-Abs among the severe/critical COVID-19 group, but 0% (0/13) and 3.1% (1/32) among the asymptomatic/mild COVID-19 and healthy groups (P = 0.021), respectively. Furthermore, we observed a significant association between the log10 of anti-IFN-α auto-Abs and the COVID-19 status, with the log10 of anti-IFN-α auto-Abs levels being significantly higher among the severe/critical COVID-19 group compared to the healthy controls (ß = 1.20; confidence interval [95% CI]: 0.72-1.67; P < 0.001). Such association remains significant either when adjusted by age and gender (adjusted ß = 1.16; 95% CI: 0.62-1.70; P < 0.001) and when adjusted by the subjects' age, gender, and obesity (adjusted ß = 1.16; 95% CI: 0.62-1.70; P < 0.001). Despite not measuring neutralizing activity, this study highlights the high frequency of these auto-Abs in the Peruvian population with a worse prognosis of COVID-19.

Pearls & Oy-sters: Leber Hereditary Optic Neuropathy-Plus Masquerading as Neuromyelitis Optica Spectrum Disorder in a 2-Year-Old Child.

"Leber hereditary optic neuropathy (LHON-Plus)" is a phenotype of LHON that is characterized by extraocular neurologic manifestations, which may be the first manifestations of the disease.

Fragile X Syndrome in children.

Fragile X syndrome is caused by the expansion of CGG triplets in the FMR1 gene, which generates epigenetic changes that silence its expression. The absence of the protein coded by this gene, FMRP, causes cellular dysfunction, leading to impaired brain development and functional abnormalities. The physical and neurologic manifestations of the disease appear early in life and may suggest the diagnosis. However, it must be confirmed by molecular tests. It affects multiple areas of daily living and greatly burdens the affected individuals and their families. Fragile X syndrome is the most common monogenic cause of intellectual disability and autism spectrum disorder; the diagnosis should be suspected in every patient with neurodevelopmental delay. Early interventions could improve the functional prognosis of patients with Fragile X syndrome, significantly impacting their quality of life and daily functioning. Therefore, healthcare for children with Fragile X syndrome should include a multidisciplinary approach.

El síndrome de X frágil es causado por la expansión de tripletas CGG en el gen FMR1, el cual genera cambios epigenéticos que silencian su expresión. La ausencia de la proteína codificada por este gen, la FMRP, causa disfunción celular, llevando a deficiencia en el desarrollo cerebral y anormalidades funcionales. Las manifestaciones físicas y neurológicas de la enfermedad aparecen en edades tempranas y pueden sugerir el diagnóstico. Sin embargo, este debe ser confirmado por pruebas moleculares. El síndrome afecta múltiples aspectos de la vida diaria y representa una alta carga para los individuos afectados y para sus familias. El síndrome de C frágil es la causa monogénica más común de discapacidad intelectual y trastornos del espectro autista; por ende, el diagnóstico debe sospecharse en todo paciente con retraso del neurodesarrollo. Intervenciones tempranas podrían mejorar el pronóstico funcional de pacientes con síndrome de X frágil, impactando significativamente su calidad de vida y funcionamiento. Por lo tanto, la atención en salud de niños con síndrome de X frágil debe incluir un abordaje multidisciplinario.

Acute Chagas Disease Outbreak among Military Personnel, Colombia, 2021.

We report an acute Chagas disease outbreak among soldiers in Colombia. Trypanosoma cruzi infection was confirmed through parasitology, serology, and molecular methods. Among 9 affected soldiers, 2 died; 7 were hospitalized and received benznidazole treatment, which produced favorable outcomes. Personnel patrolling rural areas in Colombia could be at increased risk for Chagas disease.

Validación de las propiedades psicométricas de la escala breve de estrategias resilientes en adultos colombianos / Validation of the psychometric properties of the Brief Resilient Coping Scale (BRCS) in Colombian adults

Resumen La resiliencia es la competencia de afrontamiento y adaptación a las condiciones estresantes que puede experimentar una persona. Se puede expresar a través de varias estrategias como el optimismo, la perseverancia, la creatividad y el crecimiento positivo frente a la adversidad. Esta investigación tuvo como objetivo analizar las propiedades psicométricas de la Escala Breve de Estrategias Resilientes (BRCS) en población adulta colombiana. La muestra estuvo conformada por 456 adultos colombianos (41.7 % hombres y 58.3 % mujeres) entre los 18 y los 86 años (M = 46.99). El coeficiente de fiabilidad para el puntaje total de las dos subescalas de la BRCS fue de .77. Se corroboró la validez del constructo a través de la bondad de ajuste del modelo de un factor y la correlación entre los cuatro ítems, por el que se confirmó la estructura del modelo propuesto por Sinclair y Wallston (2004). Se analizó la validez concurrente con medidas de afrontamiento religioso y personalidad Tipo D. Se efectuó un análisis de la discriminación de los reactivos a través del coeficiente de correlación biserial, que indicó que las correlaciones del ítem con la escala total tienen un nivel de discriminación excelente, con valores entre .740 y .807. Los resultados muestran correlaciones significativas entre la resiliencia y el afrontamiento religioso positivo, índices de confiabilidad interna aceptables y consistencia interna, dados los índices del análisis factorial confirmatorio. Se concluye que la evidencia sugiere que la escala BRCS es un instrumento válido y confiable para la evaluación de la capacidad de resiliencia en adultos colombianos.

Abstract Resilience is the ability to cope and adapt to stressful situations that a person may experience. This ability can be expressed through several strategies such as optimism, perseverance, creativity, and positive growth from adversity. Considering the few studies on this subject in the Latin American context and, therefore, the difficulties in evaluating resilient strategies in adults, this research considered to analyze the psychometric characteristics of the Brief Resilient Strategies Scale (BRCS). This study aimed to analyze the psychometric properties of the "Brief Resilient Coping Scale (BRCS)" in the Colombian adult population. The sample consisted of 456 Colombian adults (41.7 % men and 58.3 % women) between 18 and 86 years old (M = 46.99). The reliability coefficient for the total score of the two BRCS subscales was .77. The construct validity was confirmed by goodness of fit results for applying a one-factor model to the scale and the correlation between the four items, confirming the structure of the model proposed by Sinclair y Wallston (2004), the initial solution of a factor was confirmed, with the same items loading the same factor and with factorial weights greater than .3. Likewise, all the values of the goodness of fit indices are within the accepted ranges for a good fit of the model. That is, the data fit the factorial model well. The concurrent validity was analyzed with measures of religious coping and type D personality. Positive correlations of the BRCS scale were found with positive religious coping of the RCOPE, indicating that a greater resilience, more expression of a sense of spirituality. In the same way, the BRCS scale correlates with the DS-14 scale, indicating that a greater resilience, less tendency to experience negative emotions such as dysphoria, tension, worry, irritability, and anger more extensively over time. In addition, the correlations indicated that a higher resilience, lower vulnerability to psychological stress with experiences of strong negative emotions and inhibition of their expression in interaction with other people. The results of the criterion validity suggest that people who use resilient strategies and religious coping are protective factors for the physical and mental health of the adult population, in such a way that people with higher levels of resilience may have a greater expression of a sense spiritual. Likewise, the most resilient subjects use variables such as satisfaction with life, humor, perceived personal competence, optimism, among others, indicative of a heightened sense of internal coherence. Also, the subjects who demonstrated greater resilience capacity were less vulnerable to experiencing negative affect and social inhibition. In general terms, these results suggest that the use of resilient strategies is related to constructs that are theoretically expected from a clinical and mental health perspective. The results show significant correlations between resilience and positive religious coping, acceptable internal reliability indices and internal consistency given the confirmatory factor analysis indices. An item discrimination analysis was performed through the biserial correlation coefficient, the correlations of the item with the total scale have an excellent level of discrimination, with values between .740 and .807. For data analysis, IBM SPSS Software®, Version 25, the R for Statistical Computing program (R Project, 2019) and LISREL 8.80 was used. The evidence suggests that the BRCS scale is a valid and reliable instrument for assessing resilience capacity in Colombian adults. In general, it was found that the BRCS has good psychometric properties in the various countries where it has been evaluated, for all the population groups analyzed, with only significant differences between men and women.

Fragile X Syndrome in children

Fragile X syndrome is caused by the expansion of CGG triplets in the FMR1 gene, which generates epigenetic changes that silence its expression. The absence of the protein coded by this gene, FMRP, causes cellular dysfunction, leading to impaired brain development and functional abnormalities. The physical and neurologic manifestations of the disease appear early in life and may suggest the diagnosis. However, it must be confirmed by molecular tests. It affects multiple areas of daily living and greatly burdens the affected individuals and their families. Fragile X syndrome is the most common monogenic cause of intellectual disability and autism spectrum disorder; the diagnosis should be suspected in every patient with neurodevelopmental delay. Early interventions could improve the functional prognosis of patients with Fragile X syndrome, significantly impacting their quality of life and daily functioning. Therefore, healthcare for children with Fragile X syndrome should include a multidisciplinary approach.

El síndrome de X frágil es causado por la expansión de tripletas CGG en el gen FMR1, el cual genera cambios epigenéticos que silencian su expresión. La ausencia de la proteína codificada por este gen, la FMRP, causa disfunción celular, llevando a deficiencia en el desarrollo cerebral y anormalidades funcionales. Las manifestaciones físicas y neurológicas de la enfermedad aparecen en edades tempranas y pueden sugerir el diagnóstico. Sin embargo, este debe ser confirmado por pruebas moleculares. El síndrome afecta múltiples aspectos de la vida diaria y representa una alta carga para los individuos afectados y para sus familias. El síndrome de C frágil es la causa monogénica más común de discapacidad intelectual y trastornos del espectro autista; por ende, el diagnóstico debe sospecharse en todo paciente con retraso del neurodesarrollo. Intervenciones tempranas podrían mejorar el pronóstico funcional de pacientes con síndrome de X frágil, impactando significativamente su calidad de vida y funcionamiento. Por lo tanto, la atención en salud de niños con síndrome de X frágil debe incluir un abordaje multidisciplinario.

Arterial hypertension and ß-amyloid accumulation have spatially overlapping effects on posterior white matter hyperintensity volume: a cross-sectional study.

BACKGROUND: White matter hyperintensities (WMH) in subjects across the Alzheimer's disease (AD) spectrum with minimal vascular pathology suggests that amyloid pathology-not just arterial hypertension-impacts WMH, which in turn adversely influences cognition. Here we seek to determine the effect of both hypertension and Aß positivity on WMH, and their impact on cognition. METHODS: We analysed data from subjects with a low vascular profile and normal cognition (NC), subjective cognitive decline (SCD), and amnestic mild cognitive impairment (MCI) enrolled in the ongoing observational multicentre DZNE Longitudinal Cognitive Impairment and Dementia Study (n = 375, median age 70.0 [IQR 66.0, 74.4] years; 178 female; NC/SCD/MCI 127/162/86). All subjects underwent a rich neuropsychological assessment. We focused on baseline memory and executive function-derived from multiple neuropsychological tests using confirmatory factor analysis-, baseline preclinical Alzheimer's cognitive composite 5 (PACC5) scores, and changes in PACC5 scores over the course of three years (ΔPACC5). RESULTS: Subjects with hypertension or Aß positivity presented the largest WMH volumes (pFDR < 0.05), with spatial overlap in the frontal (hypertension: 0.42 ± 0.17; Aß: 0.46 ± 0.18), occipital (hypertension: 0.50 ± 0.16; Aß: 0.50 ± 0.16), parietal lobes (hypertension: 0.57 ± 0.18; Aß: 0.56 ± 0.20), corona radiata (hypertension: 0.45 ± 0.17; Aß: 0.40 ± 0.13), optic radiation (hypertension: 0.39 ± 0.18; Aß: 0.74 ± 0.19), and splenium of the corpus callosum (hypertension: 0.36 ± 0.12; Aß: 0.28 ± 0.12). Elevated global and regional WMH volumes coincided with worse cognitive performance at baseline and over 3 years (pFDR < 0.05). Aß positivity was negatively associated with cognitive performance (direct effect-memory: - 0.33 ± 0.08, pFDR < 0.001; executive: - 0.21 ± 0.08, pFDR < 0.001; PACC5: - 0.29 ± 0.09, pFDR = 0.006; ΔPACC5: - 0.34 ± 0.04, pFDR < 0.05). Splenial WMH mediated the relationship between hypertension and cognitive performance (indirect-only effect-memory: - 0.05 ± 0.02, pFDR = 0.029; executive: - 0.04 ± 0.02, pFDR = 0.067; PACC5: - 0.05 ± 0.02, pFDR = 0.030; ΔPACC5: - 0.09 ± 0.03, pFDR = 0.043) and WMH in the optic radiation partially mediated that between Aß positivity and memory (indirect effect-memory: - 0.05 ± 0.02, pFDR = 0.029). CONCLUSIONS: Posterior white matter is susceptible to hypertension and Aß accumulation. Posterior WMH mediate the association between these pathologies and cognitive dysfunction, making them a promising target to tackle the downstream damage related to the potentially interacting and potentiating effects of the two pathologies. TRIAL REGISTRATION: German Clinical Trials Register (DRKS00007966, 04/05/2015).

Dengue and COVID-19 Co-Circulation in the Peruvian Amazon: A Population-Based Study.

The COVID-19 pandemic affected the main Amazon cities dramatically, with Iquitos City reporting the highest seroprevalence of anti-SARS-CoV-2 antibodies during the first COVID-19 wave worldwide. This phenomenon raised many questions about the possibility of a co-circulation of dengue and COVID-19 and its consequences. We carried out a population-based cohort study in Iquitos, Peru. We obtained a venous blood sample from a subset of 326 adults from the Iquitos COVID-19 cohort (August 13-18, 2020) to estimate the seroprevalence of anti-dengue virus (DENV) and anti-SARS-CoV-2 antibodies. We tested each serum sample for anti-DENV IgG (serotypes 1, 2, 3, and 4) and SARS-CoV-2 antibodies anti-spike IgG and IgM by ELISA. We estimated an anti-SARS-CoV-2 seroprevalence of 78.0% (95% CI, 73.0-82.0) and an anti-DENV seroprevalence of 88.0% (95% CI, 84.0-91.6), signifying a high seroprevalence of both diseases during the first wave of COVID-19 transmission in the city. The San Juan District had a lower anti-DENV antibody seroprevalence than the Belen District (prevalence ratio, 0.90; 95% CI, 0.82-0.98). However, we did not observe these differences in anti-SARS-CoV-2 antibody seroprevalence. Iquitos City presented one of the highest seroprevalence rates of anti-DENV and anti-SARS-CoV-2 antibodies worldwide, but with no correlation between their antibody levels.

Obtaining of Mg-Zn Co-Doped GaN Powders via Nitridation of the Ga-Mg-Zn Metallic Solution and Their Structural and Optical Properties.

Mg-Zn co-dopedGaN powders via the nitridation of a Ga-Mg-Zn metallic solution at 1000 °C for 2 h in ammonia flow were obtained. XRD patterns for the Mg-Zn co-dopedGaN powders showed a crystal size average of 46.88 nm. Scanning electron microscopy micrographs had an irregular shape, with a ribbon-like structure and a length of 8.63 µm. Energy-dispersive spectroscopy showed the incorporation of Zn (Lα 1.012 eV) and Mg (Kα 1.253 eV), while XPS measurements showed the elemental contributions of magnesium and zinc as co-dopant elements quantified in 49.31 eV and 1019.49 eV, respectively. The photoluminescence spectrum showed a fundamental emission located at 3.40 eV(364.70 nm), which was related to band-to-band transition, besides a second emission found in a range from 2.80 eV to 2.90 eV (442.85-427.58 nm), which was related to a characteristic of Mg-doped GaN and Zn-doped GaN powders. Furthermore, Raman scattering demonstrated a shoulder at 648.05 cm-1, which could indicate the incorporation of the Mg and Zn co-dopants atoms into the GaN structure. It is expected that one of the main applications of Mg-Zn co-doped GaN powders is in obtaining thin films for SARS-CoV-2 biosensors.

Analysis of the Mental and Physical Health Symptomatology Scale in a Sample of Emerging and Migrant Adults in Chile.

Health inequities exist in groups of greater psychosocial vulnerability such as emerging adults and migrants. The study aimed to generate evidence of the validity of the mental and physical health symptomatology scale in two samples of vulnerable groups: emerging university adults, who report high levels of mental health problems, and migrants, who report high levels of physical and mental health problems. Using non-probability sampling, in the first study, evidence of construct validity of the scale was reported in 652 emerging adults and, in the second, evidence of validity was provided from associations with the depression, stress and anxiety scale (DASS-21) among 283 migrants. The results indicate that in Study 1 the two-factor model had adequate indicators of fit and adequate reliability; only the mental health factor presented evidence of convergent validity. In Study 2, the mental health factor showed positive and large associations with the DASS-21, which decreased when the physical health symptoms factor was considered. These analyses provide evidence of validity for the scale, which is an easy-to-use instrument that allows for the assessment of health from an integral perspective.