Especies y sensibilidad a antifúngicos de cepas de Candida spp. aisladas de la cavidad bucal de pacientes con VIH de Paraguay

RESUMEN Candida albicans es la levadura más aislada de la cavidad oral de personas con VIH. Sin embargo, el uso de antifúngicos ha incrementado el aislamiento de especies no C. albicans resistentes o con sensibilidad reducida. El objetivo del estudio fue determinar las especies de Candida y la sensibilidad a los antifúngicos de aislamientos de la cavidad bucal de pacientes con VIH, que acudieron al Instituto de Medicina Tropical entre julio a diciembre de 2019. Las levaduras se sembraron en Agar Cromogénico Candida (CONDA®, España) para la identificación presuntiva. Las colonias verdes se identificaron por PCR dúplex y las de coloración distinta o PCR negativa mediante el sistema comercial VITEK®2. La susceptibilidad antifúngica de C. albicans se determinó por VITEK®2, y las no albicans por el método de difusión de discos. De 278 levaduras, C. albicans se aisló en 70,9 %, seguido de C. tropicalis (8,3 %) y C. krusei (5 %). C. albicans presentó 93 % de sensibilidad y 2 % de sensibilidad dosis dependiente al fluconazol; 87 % sensibles y 3 % con sensibilidad intermedia frente a voriconazol; 97, 98 y 100 % sensibilidad a flucitosina, anfotericina B y equinocandinas, respectivamente. C. parapsilosis y C. tropicalis no registraron resistencias a fluconazol y voriconazol. Todos los aislamientos de C. glabrata fueron sensibles dosis dependientes a fluconazol y todos los aislamientos de C. krusei resultaron sensibles a voriconazol. La portación oral de Candida spp. resistentes a azoles podría llevar a fracasos terapéuticos en pacientes con VIH que desarrollen candidiasis orofaríngea.

ABSTRACT Candida albicans is the most isolated yeast from the oral cavity of people with HIV. However, the use of antifungals has increased the isolation of non-C. albicans resistant species or those with reduced sensitivity. The objective of the study was to determine the Candida species and the sensitivity to antifungals of isolates from the oral cavity of patients with HIV who attended the Institute of Tropical Medicine between July and December 2019. The yeasts were plated in Candida Chromogenic Agar (CONDA®, Spain) for presumptive identification. Green colonies were identified by duplex PCR and those with different staining or negative PCR using the commercial VITEK®2 system. The antifungal susceptibility of C. albicans was determined by VITEK®2, and non albicans by the disk diffusion method. Of 278 yeasts, C. albicans was isolated in 70.9 %, followed by C. tropicalis (8.3 %) and C. krusei (5 %). C. albicans presented 93 % sensitivity and 2 % dose-dependent sensitivity to fluconazole; 87 % sensitive and 3 % intermediate sensitivity to voriconazole; 97, 98, and 100 % sensitive to flucytosine, amphotericin B, and echinocandins, respectively. C. parapsilosis and C. tropicalis did not register resistance to fluconazole and voriconazole. All C. glabrata isolates were dose-dependently sensitive to fluconazole and all C. krusei isolates were sensitive to voriconazole. The oral carriage of Candida spp. resistant to azoles may lead to therapeutic failures in HIV patients who develop oropharyngeal candidiasis.

Factores asociados a caídas en el servicio ambulatorio de geriatría de un hospital universitario en Bogotá (Colombia) / Factors Associated with Falls in the Outpatient Geriatric Service of a University Hospital in Bogotá, Colombia / Fatores associados a quedas no serviço ambulatorial de geriatria de um hospital universitário em Bogotá, Colômbia

Resumen Introducción: las caídas en el adulto mayor influyen de manera negativa en su estado funcional y el riesgo de caídas se eleva progresivamente con la edad, por lo que es importante objetivar todos los factores de riesgo de cada paciente. El objetivo fue describir la prevalencia y los factores asociados con caídas en los pacientes del servicio ambulatorio de geriatría del Hospital Universitario San Ignacio en Bogotá (Colombia). Materiales y métodos: se realizó un estudio descriptivo con pacientes valorados en la consulta externa de geriatría del Hospital Universitario San Ignacio desde enero de 2017 hasta diciembre de 2018. Resultados: se incluyeron 233 pacientes, en quienes se documentó una prevalencia de caídas del 44.5 %. En el análisis bivariado, las variables con asociación estadísticamente significativa fueron: la presencia de trastorno neurocognitivo mayor (TNCM) (OR: 2.31; IC 95 %: 1.28-4.18; p: 0.005), el miedo a caer (OR: 2.27; IC 95 %: 1.24-4.18; p: 0.008), un grado de dependencia moderado a total (OR: 1.93; IC 95 %: 1.11-3.35; p: 0.019) y un mal estado nutricional (OR: 1.18; IC 95 %: 1.099-3.18; p: 0.02). No obstante, en el análisis multivariado, las variables que mantuvieron la asociación fueron el TNCM (OR: 2.09; IC 95 %: 1.14-3.86; p: 0.001) y el miedo a caer (OR: 2.27; IC 95 %: 1.19-4.32; p: 0.001). Conclusión: las variables asociadas con caídas en nuestra población se relacionan con lo descrito en la literatura mundial; son necesarias intervenciones para corregir estos factores y evitar caídas, así como diseñar más estudios para detectar otros factores asociados.

Abstract Introduction: Falls in the elderly have a negative impact on functional status and the risk of falls increases progressively with age, so it is important to objectify all the risk factors of each patient. Our objective was to describe the prevalence and factors associated with falls in patients from the geriatric outpatient service of the San Ignacio University Hospital in Bogotá, Colombia. Materials and methods: A descriptive study was carried out with patients assessed in the geriatric outpatient clinic of the San Ignacio University Hospital from January 2017 to December 2018. Results: 233 patients were included, documenting a prevalence of falls of 44.5%. In the bivariate analysis, the variables with a statistically significant association were: the presence of major neurocognitive disorder (MNCD) (OR: 2.31; 95 %> CI: 1.284.18; p: 0.005), fear of falling (OR: 2.27; 95 %> CI: 1.24-4.18; p: 0.008), a moderate to total degree of dependence (OR: 1.93; 95 %> ci 1.11-3.35; p: 0.019) and a poor nutritional status (OR: 1.18; 95 °/o CI: 1.099-3.18; p: 0.02). However, in the multivariate analysis, the variables that maintained the association were MNCD (OR: 2.09; 95 %> CI: 1.14-3.86; p: 0.001) and fear of falling (OR: 2.27; 95 %> CI: 1.19-4.32; p: 0.001). Discussion: The variables associated with falls in our population are related to what is described in the world literature; Interventions are necessary to correct these factors and avoid falls in our population, as well as to design more studies to detect other associated factors.

Resumo Introdução: as quedas em idosos impactam negativamente o estado funcional e o risco de quedas aumentam progressivamente com a idade, por isso é importante objetivar todos os fatores de risco de cada paciente. Nosso objetivo foi descrever a prevalência e os fatores associados às quedas em pacientes do ambulatório de geriatria do Hospital Universitário San Ignacio em Bogotá, Colômbia. Materiais e métodos: foi realizado um estudo descritivo com pacientes avaliados no ambulatório de geriatria do Hospital Universitário San Ignacio no período de janeiro de 2017 a dezembro de 2018. Resultados: foram incluídos 233 pacientes, documentando uma prevalência de quedas de 44,5%. Na análise bivariada, as variáveis com associação estatisticamente significativa foram: presença de trastorno neurocognitivo maior (TNCM) (OR: 2.31; IC 95%: 1,28-4,18; p: 0,005), medo de cair (OR: 2,27; IC 95%: 1,24-4,18; p: 0,008), grau de dependência moderado a total (OR: 1,93; IC 95%: 1,11-3,35; p: 0,019) e estado nutricional ruim (OR: 1,18; IC 95%: 1,099-3,18; p: 0,02); porém, na análise multivariada, as variáveis que mantiveram a associação foram TNCM (OR: 2,09; IC 95%: 1,14-3,86; p: 0,001) e medo de cair (OR: 2,27; IC 95%: 1,19-4,32; p: 0,001). Conclusão: as variáveis associadas às quedas em nossa população estão relacionadas ao que é descrito na literatura mundial; são necessárias intervenções para corrigir esses fatores e evitar quedas em nossa população, bem como desenhar mais estudos para detectar outros fatores associados.

Factores psicológicos en pacientes con síndrome coronario agudo hospitalizados en el servicio de cardiología del Hospital de Clínicas de la Universidad Nacional de Asunción

RESUMEN Introducción: la ansiedad, la depresión y el estrés son factores psicosociales que favorecen el desarrollo del síndrome coronario agudo. Objetivo: analizar la frecuencia de factores de riesgo cardiovascular y de factores psicológicos en los pacientes ingresados por síndrome coronario agudo en el servicio de Cardiología del Hospital de Clínicas, Universidad Nacional de Asunción. Metodología: diseño observacional, descriptivo, de corte transversal, realizado en pacientes internados con síndrome coronario agudo en el Servicio de Cardiología, desde enero a agosto del 2017. Se midieron variables sociodemográficas, antropométricas, factores de riesgo cardiovascular y factores de riesgo psicosociales. Para medir los factores de riesgo psicosociales se utilizaron las escalas de depresión y ansiedad hospitalaria (HADS) de Goldberg. Resultados: se incluyeron en el estudio 62 pacientes, 60% fueron del sexo masculino, 56% se encontraban en el rango etario de 51 a 70 años y 43% eran casados. Los factores de riesgo cardiovasculares más frecuentes presentes en los pacientes fueron: sedentarismo (90,3%), hipertensión arterial (69,4%) y dislipidemias (62,9%). En relación a los factores de riesgo psicológicos, 48,2% presentaron clínica de ansiedad, 39,2% síntomas de ansiedad, 45,1% síntomas de depresión, 24,1% clínica de depresión. Respecto al nivel de estrés: 22,6% nivel bajo, 46,8% nivel medio y 30,6% nivel alto. Conclusión: la mayoría de los pacientes estudiados con síndrome coronario agudo fueron hombres, casados, entre 51 a 70 años. Los factores de riesgo cardiovasculares más frecuentes fueron el sedentarismo, la hipertensión arterial y dislipidemias. La mayoría presentó clínica de ansiedad, síntomas de depresión y nivel medio de estrés.

ABSTRACT Introduction: Anxiety, depression and stress are psychosocial factors that favor the development of acute coronary syndrome. Objective: To analyze the frequency of cardiovascular risk factors and psychological factors in patients admitted for acute coronary syndrome in the Cardiology Service of the "Hospital de Clínicas", National University of Asunción. Methodology: Observational, descriptive, and cross-sectional design study, performed in patients with acute coronary syndrome, hospitalized in the Cardiology Service from January to August 2017. Sociodemographic and anthropometric variables, cardiovascular risk factors and psychosocial factors were measured. The Goldberg Hospital Depression and Anxiety Scales (HADS) was used to measure psychosocial risk factors. Results: 62 patients were included in the study, 60% were male, 56% were in the age range of 51 to 70 years and 43% were married. The most frequent cardiovascular risk factors present in patients with acute coronary syndrome were: sedentary lifestyle (90.3%), hypertension (69.4%), and dyslipidemia (62,9%). In relation to psychological risk factors, 48.2% had anxiety, 39.2% symptoms of anxiety, 45.1% symptoms of depression, and 24.1% had depression. Regarding the level of stress: 22.6% low level of stress, 46.8% medium level of stress and 30.6% high level of stress. Conclusion: most of the patients studied with acute coronary syndrome were men, married, between 51 and 70 years. The most frequent cardiovascular risk factors were sedentary lifestyle, hypertension, and dyslipidemia. The majority presented symptoms of anxiety, symptoms of depression and a medium level of stress.

Bacterial translocation and wasting in stressed mice

The effects of strees immunity and on the bacterial translocation from intestine to mesenteric lymph nodes, liver, and spleen were studied in a group of newborn CD1 mice. Animals were separated into three experimental groups. Mice from group I were stressed by intraperitoneal (IP) injections of heatkilled staphylococci for 4 weeks. Mice from group II were IP injected with saline solution only. The remaining mice, group III, were not injected. The clinical condition, presence of bacteria in abdominal organs, mitochondrial activity in splenic cells, lymphocyte proliferative response to Concanavalin-A and in vitro antibody production were evaluated in each mouse. Results showed that prolonged IP stressor challenge causes severe weight loss and immunodeficiency. The splenic lymphocytes from stressed mice exhibited a significant depression of both proliferative response to Concanavalin-A stimulation and anti-erythrocytes antibody synthesis. Instead, cultured in basal conditions, the splenic cells from stressed mice have an increased capacity to reduce the tetrazolium salts. Bacterial dissemination from intestine to mesenteric lymphoid nodes was also confirmed in the same group of mice. In contrast, mice in groups II and III presented no weight loss and immunodeficiency. Results suggest that chronic biological stress induced in newborn mice could facilitate the translocation of Gramnegative bacteria. Probable pathogenic mechanisms are commented upon and a correlation is proposed between the bacterial dissemination and the wasting development