Sodio urinario como factor pronóstico para mortalidad en pacientes con falla cardiaca aguda descompensada

Introducción. En los pacientes con falla cardíaca, el sodio urinario se ha propuesto como marcador de gravedad y resistencia a los diuréticos, pero los resultados de los estudios reportados son heterogéneos. Objetivo. Evaluar el sodio en orina ocasional como factor pronóstico de mortalidad en pacientes con falla cardiaca descompensada. Materiales y métodos. Se realizó un análisis anidado de casos y controles de una cohorte prospectiva de falla cardíaca descompensada. El desenlace primario fue mortalidad a los 180 días. Se hizo un análisis bivariado para evaluar las variables que se asocian con la mortalidad. Se analizaron las diferencias de las variables clínicas entre los grupos con sodio urinario mayor o menor de 70 mEq/L. Resultados. Se incluyeron 79 pacientes de los cuales 15 fallecieron a los 180 días. La edad promedio fue de 68,9 años (DE: ±13,8), 30 eran mujeres (38 %). Quince pacientes (18,9 %) tuvieron un sodio en orina inferior a 70 mEq/L. En el análisis bivariado se encontró una asociación significativa de la mortalidad con las hospitalizaciones, la presión arterial sistólica inferior a 90 mm Hg, el uso de inotrópicos y el sodio urinario inferior a 70 mEq/L. Los pacientes con sodio urinario bajo habían estado hospitalizados con mayor frecuencia en el último año, tenían menores valores de sodio sérico y presión arterial al ingreso. Conclusión. Los pacientes con sodio urinario inferior a 70 mEq/L tienen características de mayor gravedad. En el análisis bivariado, el sodio urinario se asoció con mortalidad a los 180 días.

Introduction. Urinary sodium has been proposed as a prognostic marker and indicator of the diuretic response in patients with heart failure. However, study results are heterogeneous. Objective. To evaluate the spot urinary sodium level as a risk factor for mortality in patients with decompensated heart failure. Materials and methods. We conducted a case-control study nested in a prospective cohort of patients with decompensated heart failure. The primary outcome was mortality at 180 days. The risk factors associated with mortality were evaluated through a bivariate analysis. Differences in clinical variables between groups with urinary sodium greater than or lesser than 70 mEq/L were analyzed. Results. The study included 79 patients; 15 died at 180 days. Their mean age was 68.9 years (SD=± 13.8); 30 were women (38%), and 15 (18.9%) had urinary sodium <70 mEq/L. In the bivariate analysis, a significant association was found between mortality and past medical history of hospitalizations, SBP<90 mm Hg, the use of inotropes, and urinary sodium <70 mEq/L. Regarding clinical characteristics, patients with low urinary sodium level in the last year were hospitalized more frequently with hyponatremia and hypotension at admission. Conclusion. Patients with urinary sodium <70 mEq/L had more severe signs. In a bivariate analysis, urinary sodium was associated with mortality at 180 days.

Proteinuria en la infancia: a propósito de un caso de enfermedad de Dent

Introducción: la proteinuria en la edad pediátrica es una entidad relativamente frecuente, la cual puede ser fisiológica o patológica. La segunda, por una alteración a nivel glomerular con pérdida de proteínas de gran tamaño o a nivel tubular, caracterizada por pérdida de proteínas de bajo peso molecular y alteraciones en la excreción de iones. Entre las enfermedades hereditarias que cursan con proteinuria tubular, se ha descrito la enfermedad de Dent, una patología ligada al cromosoma X. Esta enfermedad se manifiesta principalmente en varones, pero las mujeres pueden ser portadoras y tener manifestaciones clínicas leves de la enfermedad. La primera descripción de esta enfermedad fue hecha por Dent y Friedman en 1964. La mayoría de los casos recientemente reportados han sido en China y Alemania. Objetivo: realizar una revisión general de la enfermedad de Dent y del enfoque diagnóstico de la proteinuria en la infancia con base en nuestro caso, para así, sospechar de esta enfermedad. Descripción del caso: se presenta el caso de un paciente masculino sin antecedentes prenatales ni personales de importancia, quien presenta proteinuria persistente desde los primeros meses de vida y a quien, a los 7 años de edad, se le documenta la presencia de una variante ya conocida en el gen CLCN5, causante de la enfermedad de Dent tipo 1. Discusión: la proteinuria persistente patológica en la infancia debe ser estudiada debido a su posible relación con patologías que pueden afectar la función renal. Además de la diferenciación de la proteinuria persistente, de origen glomerular y tubular, la evaluación de alteraciones en la excreción de electrolitos, puede guiarnos hacia la realización de estudios genéticos y, por ende, al diagnóstico de patologías infrecuentes como la enfermedad de Dent. Conclusión: el enfoque diagnóstico de causas poco frecuentes de proteinuria tubular en la infancia, como la enfermedad de Dent, requiere de la valoración conjunta entre nefrología pediátrica y genética clínica.

Background: In pediatric patients, proteinuria is a relatively frequent entity that can be physiological or pathological. The second one, due to an alteration at the glomerular level with the loss of large proteins or at the tubular level, characterized mainly by the loss of low molecular weight proteins and changes in the excretion of ions. Among the hereditary diseases that present with tubular proteinuria, Dent disease is a disease linked to the X chromosome. Therefore, it manifests essentially in males, but women can be carriers and have minor clinical manifestations of the disease. Dent and Friedman made the first description of this disease in 1964. Recently, most of the cases have been reported in China and Germany. Objective: To perform a revision of Dent disease, as well as the diagnostic approach of childhood proteinuria based in our case in order to suspect this disease. Case description: This is the case of a masculine patient, without relevant prenatal and personal antecedents, the son of a father with polycystic renal disease, who presents persistent proteinuria from the first months of life, and who, at seven years old, the presence of a variant in the CLCN5 gene -causing of type 1 Dent disease- was documented. Discussion: The persistent pathological proteinuria in childhood must be studied due to its possible relation with pathologies that could affect renal function. Moreover, the differentiation among glomerular and tubular proteinuria can guide us to perform additional studies, including genetic tests to diagnose infrequent pathologies like Dent disease. Conclusion: The diagnostic approach to rare causes of tubular proteinuria in childhood, such as Dent's disease, requires joint assessment between pediatric nephrology and clinical genetics.

"Congelei com medo de me contaminar": tratando um caso de TEPT crônico com imobilidade tônica em uma fisioterapeuta da linha de frente na pandemia de COVID-19 / "I froze for fear of contaminating myself": treating a case of chronic PTSD with tonic immobility in a physiotherapist frontline during COVID-19 pandemic

RESUMO Objetivo: Neste estudo relatamos o caso de uma profissional de saúde com vivência de imobilidade tônica (IT) e posterior desenvolvimento de transtorno de estresse pós-traumático (TEPT) crônico em decorrência de trauma laboral por conta da COVID-19 que recebeu tratamento remoto com terapia cognitivo-comportamental focada no trauma (TCC-FT). Métodos: Relato de caso de uma paciente acompanhada por seis meses após o recebimento de TCC-FT remota. Resultados: Paciente do sexo feminino, de 36 anos, fisioterapeuta, que desenvolveu TEPT crônico e experienciou IT por medo da contaminação por coronavírus. As escalas psicométricas demonstraram que a TCC-FT reduziu consideravelmente os sintomas de TEPT e depressão e aumentou o apoio social e a resiliência. De acordo com o relato, o tratamento melhorou a concentração e a motivação, e reduziu o sentimento de culpa, a irritabilidade, a insegurança e o desconforto em lidar com outras pessoas. Conclusão: Este artigo demonstra que traumas decorrentes da COVID-19 podem ser capazes de desencadear IT e exemplifica um favorável desempenho da TCC-FT na melhoria global da saúde mental dos pacientes com TEPT crônico com vivência de IT.

ABSTRACT Objective: In this study, we report the case of a health professional with experience of tonic immobility (TI) and subsequent development of post-traumatic stress disorder (PTSD) as a result of occupational trauma due to COVID-19 who received remote treatment with Trauma-Focused Cognitive Behavioral Therapy (TF-CBT). Methods: A case report of a patient followed for six months after receiving remote TF-CBT. Results: A 36-year-old female patient, the physiotherapist who developed chronic PTSD and experienced TI for fear of coronavirus contamination. Psychometric scales demonstrated that TF-CBT considerably reduced PTSD and depression symptoms and increased social support and resilience. According to the report, the treatment improved concentration and motivation, and reduced feelings of guilt, irritability, insecurity, and discomfort in dealing with other people. Conclusion: This article demonstrates that trauma resulting from COVID-19 can trigger TI and exemplifies a favorable performance of TF-CBT in the global improvement of the mental health of patients with chronic PTSD who experience TI.

Prevalencia de fracturas periprotésicas de fémur en una serie determinada de pacientes con reemplazo de cadera / Prevalence of periprosthetic femoral fractures in a selected series of hip replacement patients

Objetivo Determinar la prevalencia de fracturas periprotésicas en pacientes con antecedente de reemplazo de cadera que ingresaron a un servicio de ortopedia entre el 2010 al 2018. Materiales y métodos 709 pacientes fueron atendidos, pero solo 15 pacientes presentaron fracturas periprotésicas. Resultados La prevalencia de fracturas periprotésicas fue del 2.1% (IC 95%: 1.05; 3.17). La mayor parte de los casos se presentaron en el sexo femenino con un porcentaje de 53,3%, con edad promedio de 74.2 año. Las principales causas de fractura periprotésica fueron el trauma en la cadera por caída desde su propia altura. Solo el 12.12% presentaron alguna complicación local o sistémica. Conclusiones La prevalencia de fracturas periprotésicas fue menor del 3%; esta patología depende de distintos factores que se deben tener en cuenta al momento de realizar los procedimientos quirúrgicos.

Objective To determine the prevalence of periprosthetic fractures in patients with a history of hip replacement admitted to an orthopedic service between 2010 and 2018. Materials and methods 709 patients were seen, but only 15 patients had periprosthetic fractures. Results The prevalence of periprotic fractures was 2.1% (95% CI: 1.05; 3.17). The majority of cases occurred in females with a percentage of 53.3%, with an average age of 74.2 years. The main causes of periprotic fracture were hip trauma from falling from its own height. Only 12.12% presented some local or systemic complication. Conclusions The prevalence of periprosthetic fractures was less than 3%; this pathology depends on different factors that must be taken into account when performing surgical procedures.

The use of histológical parameters to assess intestinal and liver health on broilers challenged isolatedly and simultaneously with cyclopiazonic acid and aflatoxin / B1 El uso de parámetros histológicos para evaluar la salud intestinal y hepática en pollos de engorde desafiados de forma aislada y simultánea con ácido ciclopiazónico y aflatoxina B1

Abstract Mycotoxins contaminate agricultural commodities, which contaminates animals. These toxins can damage vital organs, such as the liver, as well as the epithelial tissue. Among these mycotoxins are aflatoxin B1 (AFB1) and cyclopiazonic acid (CPA), which can occur simultaneously in food. In broilers, mycotoxicosis has an economic impact due to several factors, such as low feed conversion rate, incidence of other diseases, and interference with reproductive capacity, all of which may lead to a public health problem. The aim of the present study was to histologically assess, through the I See Inside (ISI) method, harmful effects on broiler liver, duodenum, jejunum, and ileum in the presence of AFB1 and CPA isolatedly and simultaneously. Groups challenged with mycotoxins showed significant damage to both gut and liver fragments. All challenged-groups in all fragments impaired the parameters analyzed for intestinal epithelium. In the liver, AFB1 was predominantly harmful when the parameters were analyzed separately, but when analyzing the total ISI score, CPA was also found to be harmful to this organ. The other point analyzed was the great variation between the weights of the birds contaminated by mycotoxin while the negative control group presents a lesser variation.

Resumen Las micotoxinas contaminan los productos agrícolas, que a su vez contaminan a los animales. Estas toxinas pueden dañar órganos vitales, como el hígado y el tejido epitelial. Entre estas micotoxinas se encuentran la aflatoxina B1 (AFB1) y el ácido ciclopiazónico (CPA), que pueden hallarse simultáneamente en los alimentos. En los pollos de engorde, la micotoxicosis tiene un impacto económico debido a varios factores, como la baja tasa de conversión alimenticia, la incidencia de otras enfermedades y la interferencia de la capacidad reproductiva, que pueden llevar a un problema de salud pública. El objetivo de la presente investigación es la de evaluar histológicamente, a través del método "I See Inside" (ISI), los efectos nocivos sobre el hígado, duodeno, yeyuno e íleon de pollos de engorde en presencia de AFB1 y CPA de forma aislada y simultánea. Los grupos desafiados con micotoxinas presentaron un daño significativo tanto en el intestino como en los fragmentos del hígado. Todos los grupos tratados tuvieron alteraciones en los parámetros analizados para el epitelio intestinal. En el hígado, AFB1 fue predominantemente dañino cuando los parámetros se analizaron por separado, pero al examinar la puntuación ISI total, también se encontró que el CPA era perjudicial para este órgano. Otra cuestión que fue investigada fue la gran variación entre los pesos de las aves contaminadas por micotoxinas mientras el grupo de control negativo presentó una variación menor.

COVID-19 diagnosis by RT-qPCR in alternative specimens

BACKGROUND The high demand for adequate material for the gold standard reverse transcription real-time polymerase chain reaction (RT-qPCR)-based diagnosis imposed by the Coronavirus disease 2019 (COVID-19) pandemic, combined with the inherent contamination risks for healthcare workers during nasopharyngeal swab (NP) sample collection and the discomfort it causes patients, brought the need to identify alternative specimens suitable for the diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). OBJECTIVES The aim of this work was to compare saliva and gingival fluid swabs to NP swabs as specimens for RT-qPCR-based SARS-CoV-2 diagnosis. METHODS We compared gingival fluid swabs (n = 158) and saliva (n = 207) to the rayon-tipped NP swabs obtained from mild-symptomatic and asymptomatic subjects as specimens for RT-qPCR for SARS-CoV-2 detection. FINDINGS When compared to NP swabs, gingival fluid swabs had a concordance rate of 15.4% among positive samples, zero among inconclusive, and 100% among negative ones. For saliva samples, the concordance rate was 67.6% among positive samples, 42.9% among inconclusive, and 96.8% among negative ones. However, the concordance rate between saliva and NP swabs was higher (96.9%) within samples with lower cycle threshold (Ct) values (Ct > 10 ≤ 25). MAIN CONCLUSIONS Our data suggests that whereas gingival fluid swabs are not substitutes for NP swabs, saliva might be considered whenever NP swabs are not available or recommended.

Continuity of psychiatric disorders between 6 and 11 years of age in the 2004 Pelotas Birth Cohort

Objective: To investigate the incidence and homotypic and heterotypic continuity of psychiatric disorders between ages 6 and 11. Methods: In 2004, all live births in the city of Pelotas, Brazil, were recorded (n=4,231). Psychiatric disorders were assessed by the Strengths and Difficulties Questionnaire (SDQ). SDQ subscale scores (emotional symptoms, conduct problems, hyperactivity/inattention, and peer relationship problems) were categorized as normal or abnormal. To examine associations between problems over time, odds ratios were computed using logistic regression. Results: Any SDQ difficulty was observed in 350 children (10.4%, 95%CI 9.4-11.5) at age 6 and 476 (14.2%, 95%CI 13.0-15.4) at age 11, with a higher prevalence among boys at both ages. Between ages 6 and 11, there was a 50 and a 45% increase in the prevalence of emotional and hyperactivity/inattention symptoms, respectively. Among those who had any SDQ difficulty at age 6, that status persisted in 81% at age 11. We found homotypic continuity of emotional symptoms, conduct problems, hyperactivity/inattention, and peer relationship problems. Conclusions: Our results indicate an increasing incidence of psychiatric disorders in this age group, with rates of disorders and continuity patterns similar to those observed in other studies.

Impact of multidimensional interventions on quality of life and depression among older adults in a primary care setting in Brazil: a quasi-experimental study

Objective: To evaluate the impact of multidimensional interventions on quality of life (QoL) and depressive symptoms in Brazilian older adults living in the community. Methods: Longitudinal, quasi-experimental study of older adults receiving conventional primary health care (PHC). The interventions were designed in response to a first round of data collection and validated through pilot testing in groups of older adults from another community. The validated interventions were then applied to an intervention group (IG). To measure their effect, we used the Medical Outcomes Short-Form Health Survey (SF-36) quality of life scale and the Geriatric Depression Scale (GDS-30). Results: The sample comprised 118 participants. IG participants exhibited significant improvement in several QoL domains (SF-36): mental health (p = 0.010), general health perceptions (p = 0.016), and physical functioning (p = 0.045). No such improvement occurred in controls (p > 0.050). The prevalence of depression (GDS-30) fell from 36.7 to 23.3% in the IG, despite no significant difference (p = 0.272). Controls also reported a reduction in depressive symptoms, but only from 44.8 to 41.4% (p = 0.112). Conclusions: This multidimensional intervention was associated with significant improvement in mental health, general health perceptions, and physical functioning in a sample of Brazilian older adults. Clinical trial registration: RBR-92dbtx.

Evaluation of the clinicai analysis service provided to an emergency department / Avaliação do serviço de análises clínicas prestado a uma unidade de emergência

ABSTRACT Introduction: Time for releasing test results and critical value communication by the clinical laboratory are considered important determinants of patients' length of stay in the Emergency Department (ED). As well as physician satisfaction, they are used as quality indicators of the Clinical Analysis Service (CAS). Objective: The aim of this study was to evaluate the time to return a test result, the communication of critical values and the level of satisfaction of the ED physicians of a university hospital with the CAS. Material and methods: A physician satisfaction survey was conducted using a questionnaire. The test turnaround time for emergency requests was analyzed by observation of the pre-analytical phase and monitoring the analytical and post-analytical phases through the laboratory information system. In order to evaluate the communication of critical values by the CAS, a document analysis of the process was performed. Results: Physicians' overall satisfaction with the CAS was considered average. Greater satisfaction was observed with reliability of the results and the staff courtesy and lesser with the delivery time of results. The test turnaround time exceeded clinicians' expectations and the average described in the literature. No experience with critical-value communication was perceived. Conclusion: The results show several opportunities for progress in the relationship between ED and CAS. The improvement of laboratory quality indicators also depends on the involvement of ED physicians and nurses and embraces monitoring, planning, education and investment in system computerization.

RESUMEN Introducción: El tiempo de entrega de pruebas y la comunicación de valores críticos por el laboratorio clínico son considerados factores determinantes del tiempo de permanencia del paciente en la Sección de Urgencias (SU). Por lo tanto, así como la satisfacción de los médicos, estos datos también son utilizados como indicadores de calidad del Servicio de Análisis Clínicos (SAC). Objetivo: Evaluar el tiempo de entrega de pruebas, la comunicación de valores críticos y el grado de satisfacción de los médicos de la SU de un hospital universitario con el SAC. Material y método: Se realizó una encuesta de satisfacción de los médicos, utilizando un cuestionario. El tiempo de reporte de resultados en la SU ha sido analizado por medio de observación presencial de la fase preanalítica y monitoreo en el sistema computorizado de las fases analítica y postanalítica del laboratorio. Para evaluar la comunicación de valores críticos por el SAC, un análisis documental del proceso ha sido realizado. Resultados: La satisfacción general con el SAC fue considerada regular por los médicos participantes; hubo mayor satisfacción con la confianza en los resultados y con la atención del personal, y menor con el tiempo de entrega de resultados. Los tiempos de reporte han sido más largos que las expectativas de los médicosy la media descripta en la literatura. No se ha observado una cultura de comunicación de valores críticos. Conclusión: Los resultados han ensenado varias oportunidades deprogreso en la relación entre SUy SAC. La mejoría de los indicadores de calidad de laboratorio evaluados depende también del envolvimiento de los médicos y enfermeros del SU e incluye monitoreo, planeamiento, educación e investimento en informatización del sistema.

RESUMO Introdução: O tempo de liberação de exames e a comunicação de valores críticos pelo laboratório clínico são considerados importantes determinantes do tempo de permanência do paciente no Serviço de Emergência (SE). Portanto, assim como a satisfação dos médicos, esses dados também são utilizados como indicadores de qualidade do Serviço de Análises Clínicas (SACL). Objetivo: Avaliar o tempo de liberação de exames, a comunicação de valores críticos e o nível de satisfação dos médicos do SE de um hospital universitário em relação ao SACL. Material e métodos: Foi realizada uma pesquisa de satisfação dos médicos, utilizando um questionário. O tempo de liberação dos resultados de exames de emergência foi analisado por meio de observação presencial da fase pré-analítica e monitoramento no sistema informatizado das fases analítica e pós-analítica do laboratório. Para avaliar a comunicação de valores críticos pelo SACL, foi realizada análise documental do processo. Resultados: A satisfação geral com o SACL foi considerada regular pelos médicos participantes, com maior satisfação quanto à confiança nos resultados e à cortesia dos servidores e menor quanto ao tempo de entrega de resultados. Os tempos de liberação de resultados dos exames ultrapassaram as expectativas dos médicos e a média descrita na literatura. Não foi observada cultura de comunicação de valores críticos. Conclusão: Os resultados demonstraram várias oportunidades de progresso na relação entre o SE e o SACL. A melhoria dos indicadores da qualidade laboratorial avaliados depende também do envolvimento dos médicos e dos enfermeiros do SE e inclui monitoramento, planejamento, educação e investimento em informatização do sistema.

Understanding Bile Acid Signaling in Diabetes: From Pathophysiology to Therapeutic Targets

Diabetes and obesity have reached an epidemic status worldwide. Diabetes increases the risk for cardiovascular disease and non-alcoholic fatty liver disease. Primary bile acids are synthesized in hepatocytes and are transformed to secondary bile acids in the intestine by gut bacteria. Bile acids are nutrient sensors and metabolic integrators that regulate lipid, glucose, and energy homeostasis by activating nuclear farnesoid X receptor and membrane Takeda G protein-coupled receptor 5. Bile acids control gut bacteria overgrowth, species population, and protect the integrity of the intestinal barrier. Gut bacteria, in turn, control circulating bile acid composition and pool size. Dysregulation of bile acid homeostasis and dysbiosis causes diabetes and obesity. Targeting bile acid signaling and the gut microbiome have therapeutic potential for treating diabetes, obesity, and non-alcoholic fatty liver disease.

Assessment of the pre-analytical phase of a clinical analyses laboratory / Avaliação da fase pré-analítica de um laboratório de análises clínicas

ABSTRACT Introduction: The pre-analytical phase encompasses the procedures prior to the performance of the laboratory tests, which are the physician's requisition, patient and tests registration, collection and transport of samples. This phase involves different professionals and is responsible for the majority of the laboratory errors. Objective: To assess the pre-analytical phase of a public laboratory through quality indicators (QI). Method: Nonconformities (NC) in the physician's requisitions and in the patients and tests registrations were evaluated during the quality checking process. A questionnaire was applied to evaluate the service and the satisfaction of the laboratory's client. The QI were calculated considering the number of NC in the processes in relation to the total opportunities, compared with specifications described in the literature and evaluated by the Sigma metric. Results: The pre-analytical phase was evaluated by 34 QI. From these, 18 presented Sigma score lower than 3.0, six between 3.0 and 4.0, six above 4.0 and four presented Sigma score of 6.0. The completiton of requisitions presented worse performance than the process of tests registration. Regarding the three stages of the pre-analytical phase evaluated, the scheduling presented the worst performance, followed by the service at the reception and the sample collection. Conclusion: The evaluation of the QI allowed organizing the improvements that should be prioritized in the laboratory. The Sigma metric was useful for assessing the QIs considered important to the laboratory, for which there are no published specifications. The questionnaire for evaluating the laboratory's service and client's satisfaction was not a reliable tool for assessing the quality of the pre-analytical phase.

RESUMO Introdução: A fase pré-analítica abrange os procedimentos antes da execução dos testes laboratoriais, sendo eles a requisição, o cadastro de clientes e exames, a coleta e o transporte de amostras. Essa fase envolve diferentes profissionais e é responsável pela maioria dos erros de laboratório. Objetivo: Analisar a fase pré-analítica de um laboratório público por meio de indicadores da qualidade (IQ). Método: As não conformidades (NC) nas requisições e no cadastro dos clientes e dos exames foram avaliadas durante o processo de checagem. Foi aplicado um questionário para avaliar o atendimento e a satisfação dos clientes do laboratório. Os IQ foram calculados considerando o número de NC nos processos em relação ao total de oportunidades, comparando-os com as especificações encontradas na literatura e avaliando-os pela métrica Sigma. Resultados: A fase pré-analítica foi avaliada por 34 IQ. Desses, 18 apresentaram Sigma menor que 3,0; seis, entre 3,0 e 4,0; seis, acima de 4,0; e quatro, Sigma 6,0. O preenchimento das requisições apresentou pior desempenho do que o processo de cadastro dos exames. Em relação às três etapas da fase pré-analítica avaliadas, a que apresentou pior desempenho foi o agendamento, seguido do atendimento na recepção e da coleta. Conclusão: A avaliação dos IQ permitiu ordenar as melhorias que devem ser priorizadas no laboratório. A métrica Sigma foi útil para avaliar IQ, considerados importantes para o laboratório, para os quais não há especificações publicadas. O questionário de avaliação do atendimento e da satisfação do cliente não se mostrou uma ferramenta confiável para avaliar a qualidade da fase pré-analítica.

Prevalência, fatores associados e limitações relacionados ao problema crônico de coluna entre adultos e idosos no Brasil / Prevalencia, factores asociados y limitaciones relacionadas con el problema crónico de columna entre adultos y ancianos en Brasil / Prevalence, associated factors, and limitations related to chronic back problems in adults and elderly in Brazil

O objetivo foi analisar aspetos epidemiológicos do problema crônico de coluna no Brasil e estudar a associação entre a prevalência do problema crônico de coluna e fatores demográficos, socioeconômicos, estilo de vida e condições de saúde. Utilizam-se microdados da Pesquisa Nacional de Saúde (PNS) de 2013. Os indicadores epidemiológicos foram: prevalência, tempo vivido com problema crônico de coluna, ciclo vital (de adulto jovem até idoso), impacto nas limitações da Vida Diária e idade média do início dos sintomas, segundo sexo e faixa etária. Para analisar a desigualdade do problema crônico de coluna segundo características socioeconômicas e fatores de risco realiza-se modelo de regressão logística multivariada, por etapa do ciclo vital, tendo como variável dependente a presença de problema crônico de coluna e como independentes: sexo, escolaridade, área de residência, raça/cor, autoavaliação da saúde, tipo de doença crônica, ídice de massa corporal (IMC) e atividade física. A prevalência de problema crônico de coluna no Brasil foi de 18,5%, sendo maior entre mulheres do que entre homens (21,1%; IC95%: 20,2-21,9). A idade média de início do problema crônico de coluna é 35 anos. Encontrou-se associação entre problema crônico de coluna e menor nível educacional, má autoavaliação da saúde e presença da maioria das doenças crônicas consideradas. Local de residência, IMC, idade e raça/cor estiveram fracamente ou não associados. A prevalência de problema crônico de coluna estabiliza aos 50 anos, mas a severidade da limitação aumenta em idades mais avançadas. A alta prevalência, similar a outros países, e o impacto nas condições de vida revelam a necessidade de estudos epidemiológicos sobre problema crônico de coluna. Resultados sugerem que a promoção e prevenção do problema crônico de coluna devem ser intensificadas, especialmente antes dos 50 anos de idade, considerando-se o acentuado envelhecimento populacional do país.

El objetivo fue analizar aspectos epidemiológicos del problema crónico de columna en Brasil y estudiar la asociación entre la prevalencia del problema crónico de columna y factores demográficos, socioeconómicos, estilo de vida y condiciones de salud. Se utilizan microdatos de la Encuesta Nacional de Salud (PNS) de 2013. Los indicadores epidemiológicos fueron: prevalencia, tiempo vivido con problema crónico de columna, ciclo vital (desde la etapa de adulto joven a incluso anciano), impacto en las limitaciones de la vida diaria y edad media del inicio de los síntomas, según sexo y franja de edad. Para analizar la desigualdad del problema crónico de columna, según características socioeconómicas y factores de riesgo, se realiza un modelo de regresión logística multivariada, por etapa del ciclo vital, teniendo como variable dependiente la presencia de problema crónico de columna y como independientes: sexo, escolaridad, área de residencia, raza/color, autoevaluación de la salud, tipo de enfermedad crónica, índice de masa corporal (IMC) y actividad física. La prevalencia de problema crónico de columna en Brasil fue de un 18,5%, siendo mayor entre mujeres que entre hombres (21,1%; IC95%: 20,2-21,9). La edad media de inicio del problema crónico de columna es 35 años. Se encontró una asociación entre problema crónico de columna y un menor nivel educacional, mala autoevaluación de la salud y una presencia de la mayoría de las enfermedades crónicas consideradas. Lugar de residencia, IMC, edad y raza/color estuvieron escasamente o no asociados. La prevalencia de problema crónico de columna se estabiliza a los 50 años, pero la severidad de la limitación aumenta en edades más avanzadas. La alta prevalencia, similar a otros países, y el impacto en las condiciones de vida revelan la necesidad de estudios epidemiológicos sobre problema crónico de columna. Los resultados sugieren que la promoción y prevención del problema crónico de columna deben ser intensificadas, especialmente antes de los 50 años de edad, considerándose el acentuado envejecimiento poblacional del país.

The objective was to analyze the epidemiological characteristics of chronic back problems in Brazil and study the association between their prevalence and demographic and socioeconomic factors, lifestyle, and health conditions. The study used micro-data from the Brazilian National Health Survey (PNS), 2013. The epidemiological indicators were: prevalence, time with chronic back problems, life cycle (from young adults to the elderly), limitations in activities of daily living, and mean age at onset of symptoms, according to sex and age bracket. In order to analyze inequality in chronic back problems according to socioeconomic characteristics and risk factors, a multivariate logistic regression model was used, based on life cycle stages, with the presence of chronic back problems as the dependent variable and the following independent variables: sex, schooling, area of residence, race/color, self-rated health, types of chronic diseases, body mass index (BMI), and physical activity. Prevalence of chronic back problems in Brazil was 18.5%, and was higher in women than in men (21.1%; 95%CI: 20.2-21.9). Mean age at onset of chronic back problems was 35 years. There was an association between chronic back problems and lower schooling, poor self-rated health, and presence of the majority of the selected chronic diseases. Area of residence, BMI, age, and race/color were weakly associated or not associated with chronic back problems. Prevalence of chronic back problems stabilized at 50 years of age, but the severity of limitations increased at older ages. As in other countries, high prevalence and the impact on living conditions revealed the need for epidemiological studies on chronic back problems in Brazil. The results suggest that health promotion and the prevention of chronic back problems should be intensified, especially before 50 years of age, considering the on-going population aging in Brazil.

The use of Eucalyptus staigeriana nanoemulsion for control of sheep haemonchosis / Uso da nanoemulsão de Eucalyptus staigeriana no controle da hemoncose em ovinos

Sustainable control of gastrointestinal nematodes (GIN) in small ruminants has been based on the use of alternative methods, including targeted selective treatment, such as FAMACHA. Another GIN control alternative is the use of herbal medicines, although in many cases their use is based on empirical knowledge. Biopolymer nanoformulations has been investigated to maximize the essential oil effects against sheep gastrointestinal nematodes. The aim of the present study was to combine a Eucalyptus staigeriana essential oil nanoemulsion (EsNano) with FAMACHA as an alternative control for sheep haemonchosis. The study was performed over six months at a commercial sheep farm located in a semiarid region of Northeast Brazil. Initially, a fecal egg count reduction test (FECRT) in sheep with levamisole, ivermectin and oxfendazole in sheep was performed used to determine the most effective anthelmintic to use as the positive control. Levamisole has been selected because it showed efficacy superior to 95%. EsNano was obtained and then its physicochemical properties were characterized. The average (±SE) size of the particles in the nanoemulsion was 276.8 (±12.3) nm with bimodal distribution and polydispersity. Nine visits were performed, from April to September 2013, with an interval of 17 days. One hundred sixty-two male and female sheep were divided into three groups (n=54 each) and were treated when FAMACHA score was 3, 4, or 5: G-EsNano 250mg kg-1 EsNano; G-Lev 7.5mg kg-1 levamisole (positive control), and G-Neg was not treated (negative control). Feces from sheep were collected to quantify the number of eggs per gram of feces (epg) and to identify nematode genera. Sheep weight gain was monitored. The epg data for each group and the average sheep weight gains were analyzed by variance analysis and compared with the Tukey's test (P<0.05). Significant difference between the number of animals treated with EsNano and levamisole was not observed in any visit (P>0.05). The epg variation was similar in the G-EsNano and G-Lev groups on visits (P>0.05), except the second and fifth evaluation in the epg groups were significantly different (P<0.05). Haemonchus spp. was the most prevalent nematode. There was no significant weight gain in any of the treated groups (P<0.05). The combination of phytotherapy and FAMACHA can be an alternative to minimize the use of synthetic anthelmintics to control resistant GIN populations of small ruminants.(AU)

O controle sustentável de nematoides gastrintestinais (NGI) em pequenos ruminantes tem sido baseado na utilização de métodos alternativos, incluindo o tratamento alvo-seletivo, tal como o FAMACHA. Outra alternativa de controle de NGI é o uso de plantas medicinais, embora, em muitos casos, a sua utilização seja baseada no conhecimento empírico. Nanoformulações biopoliméricas tem sido investigadas para maximizar os efeitos de óleos essenciais sobre nematoides gastrointestinais em ovinos. O objetivo do presente estudo foi combinar a nanoemulsão do óleo essencial de Eucalyptus staigeriana (EsNano) com o método FAMACHA como uma alternativa para o controle da hemoncose em ovinos. Este estudo foi realizado ao longo de seis meses em uma fazenda comercial de ovinos localizada em uma região semiárida do Nordeste do Brasil. Inicialmente, um teste de redução da contagem de ovos nas fezes (FECRT) em ovinos com levamisol, ivermectina e oxfendazole foi realizado para determinar o anti-helmíntico mais eficaz, para posterior uso como controle positivo. Levamisol foi selecionado porque mostrou eficácia superior a 95%. EsNano foi obtido e, em seguida, as suas propriedades físico-químicas foram caracterizadas. O tamanho médio (±SE) das partículas na nanoemulsão foi 276,8 (±12,3) nm, com distribuição bimodal e polidispersividade. Foram realizadas nove visitas, de abril a setembro de 2013, com um intervalo de 17 dias. Cento e sessenta e dois ovinos machos e fêmeas foram divididos em três grupos (n=54 cada) e foram tratados quando o FAMACHA foi 3, 4 ou 5: G-EsNano 250 mg kg-1 EsNano; G-Lev 7,5mg kg-1 de levamisol (controlo positivo), e G-Neg não foi tratado (controle negativo). As fezes dos ovinos foram coletadas para quantificar o número de ovos por grama de fezes (opg) e identificar os gêneros de nematóides. O ganho de peso de ovinos foi monitorado. Os dados do opg de cada grupo e os ganhos de peso médio dos ovinos foram analisados por análise de variância e comparadas com o teste de Tukey (P<0,05). Diferença significativa entre o número de animais tratados com EsNano e levamisol não foi observada em nenhuma visita (P>0,05). A variação opg foi semelhante para os grupos G-EsNano e G-Lev nas vistas (P>0,05), excetuando a segunda e quinta avaliação em que os opg dos grupos foram significativamente diferentes (P>0,05). O nematoide Haemonchus spp. foi o mais prevalente. Não houve aumento significativo de peso em qualquer um dos grupos tratados (P>0,05). Assim, a combinação de fitoterapia e FAMACHA pode ser uma alternativa para minimizar o uso anti-helmínticos sintéticos para controlar populações resistentes NGI em pequenos ruminantes.(AU)

Induction of Apoptosis in Intestinal Toxicity to a Histone Deacetylase Inhibitor in a Phase I Study with Pelvic Radiotherapy / Journal of the Korean Cancer Association, 대한암학회지

PURPOSE: When integrating molecularly targeted compounds in radiotherapy, synergistic effects of the systemic agent and radiation may extend the limits of patient tolerance, increasing the demand for understanding the pathophysiological mechanisms of treatment toxicity. In this Pelvic Radiation and Vorinostat (PRAVO) study, we investigated mechanisms of adverse effects in response to the histone deacetylase (HDAC) inhibitor vorinostat (suberoylanilide hydroxamic acid, SAHA) when administered as a potential radiosensitiser. MATERIALS AND METHODS: This phase I study for advanced gastrointestinal carcinoma was conducted in sequential patient cohorts exposed to escalating doses of vorinostat combined with standard-fractionated palliative radiotherapy to pelvic target volumes. Gene expression microarray analysis of the study patient peripheral blood mononuclear cells (PBMC) was followed by functional validation in cultured cell lines and mice treated with SAHA. RESULTS: PBMC transcriptional responses to vorinostat, including induction of apoptosis, were confined to the patient cohort reporting dose-limiting intestinal toxicities. At relevant SAHA concentrations, apoptotic features (annexin V staining and caspase 3/7 activation, but not poly-(ADP-ribose)-polymerase cleavage) were observed in cultured intestinal epithelial cells. Moreover, SAHA-treated mice displayed significant weight loss. CONCLUSION: The PRAVO study design implemented a strategy to explore treatment toxicity caused by an HDAC inhibitor when combined with radiotherapy and enabled the identification of apoptosis as a potential mechanism responsible for the dose-limiting effects of vorinostat. To the best of our knowledge, this is the first report deciphering mechanisms of normal tissue adverse effects in response to an HDAC inhibitor within a combined-modality treatment regimen.

Diabetes gestacional, hipotiroidismo y concentración urinaria de yodo en embarazadas. Yodurias en escolares en Paraguay: Exceso de yodo en la sal y riesgo de hiper e hipotiroidismo / Gestational diabetes, hypothyroidism and iodine urinary concentration in pregnant women. Urinary iodine in schoolage children in Paraguay: Iodine excess in salt and hyper and hypothyroidism risk

The main inclicator of iodine nutritional status of salt for human con-sumption is the urinary concentration of iodine, which is useful in monitoring universal levels in salt. Paraguay has suffered deficiency in salt with highprevalence of goiter in thepopulation reaching48.6%. In 2000, results of the ThyroidMobileproject in Latin America showed a goiter prevalence of 17% but 79.6% of the consumed iodized salt was adequate in paraguayan households (more than 15 ppm of iodine). The average values of iodine urinary concentration in 4487 scholars was 437 µg/L, 30% of the average value was between the ideal of 100 to 199 µg/L and 46.1% were above 300 mg/L, with risk of excess iodine. Urinary concentration of iodine during pregnancy was measure for the first time in Paraguay in 200 women; the average was 484 µg/L but diabetes and hypothyroidism during pregnancy was observe in 50% of them. Objective: Determine iodine concentration in urine of the school population in 17 departments of the country and measure the levels of iodine in urine in 200 pregnant women from 15-37 years of age and their levels of glycaemia, and thyroid TSH. Methods: During the years, 2006 and 2007 were evaluated 4487 school randomized, in a probabilistic sample, 3198 in rural areas and 1,289 in urban areas; casual urine samples was collected to determine iodine content. The urinary concentration of iodine in two hundredpregnant women, concentration of iodine in salt, and levels of glycaemia and TSH were also included in the present study All candidates agreed with the informed consent under the ethics rules. Results: These data showed by comparing the levels of iodine in urine concentration in more than adequate and excessive level but this last was markedly elevated (93.8%). The median level greater than 300 µg/L was observed in 100% of the 4,487 urine samples, while the median urinary iodine levels of300-500 µg/L was 91.3% and above 500 was 9.7%. These levels showed the risk of developing thyroid autoimmune diseases. In 200 pregnancy women the average of urine concentration of iodine was 498 pcg/L, subclinical and clinical hypothyroidism and gestational diabetes was 50% of both. Conclu-sion: To obtain normal median urinary iodine levels is necessary to decrease the amount of iodine in salt. The main recommendation is to insist on adequate monitoring of iodized salt consumption. Also continue surveillance and monitoring in sentinel sites reporting the importance of adequate iodine intake of the population especially in pregnant women that also need to be warm about the diabetes during pregnancy but also a regimen is necessary to keep them within the normal levels of glycemia. The subclinical hypothyroidism has been also studied in the same patients.

El principal indicador del impacto de la yodación de la sal de consumo humano es la concentración urinaria de yodo la cual es útil en el monitoreo de la sal. En la encuesta del año 1988 realizada en el Paraguay, se alcanzó una prevalencia de bocio de 48,6% en la población escolar con un déficit de yodo en la sal, pero el año 2000 en el estudio del proyecto de Tiroides Móvil, se redujo por el método ecográfico a 17%. Ese mismo año la mediana de los niveles urinarios en niños escolares de 6-12 años fue 258 µg/L, considerando que 30% se encontraba entre el valor ideal de 100 a 199 µg/L y 46,1% sobre 300 µg/L, implicando un riesgo de exceso de yodo en dicha población con las posibles consecuencias de aparición tanto de hipo como de hipertiroidismo. El 93% presentó exceso de yodo en la sal y la mediana urinaria fue 437 ug/ mL. Un grupo de embarazadas han sido estudiadas en el Hospital San Pablo por primera vez en el Paraguay para la determinación de la yoduria, yodo en sal, diabetes gestacional, hipotiroidismo en el embarazo y sus valores antropométricos resultando un hipotiroidismo subclínico del 50% y diabetes gestacional del 50%. Objetivo: Determinar las yodurias en la población escolar de 6-12 años pre púber de ambos sexos en 17 departamentos del país y en una submuestra en embarazadas y también niveles de glicemia en el embarazo en un hospital de Asunción. Sujetos y Métodos: En el periodo del 2006-2007 fueron evaluados 4.487 escolares randomizados, en una muestra probabilística, 3.198 en el área rural y 1.289 en el área urbana con muestras en orina casual. El año 2015, doscientas embarazadas fueron estudiadas con muestras de glicemia en ayunas y 2 horas post prandial, dosaje de TSH, yodo en sal de 100 gramos de la sal de consumo en sus hogares y de orina para ver la concentración de yodo en sal y urinaria de yodo. Todos los candidatos fueron estudiados bajo consentimiento autorizado y de acuerdo a normas éticas. Resultados: Al comparar los niveles de yodo en orina en el nivel más que adecuado y el excesivo de la yoduria se vió que éste último nivel estaba marcadamente elevado (93.8%), que la mediana de los niveles mayores a 300 ug/L era del 100% del total de las 4.487 muestras de orina, mientras que la mediana de los niveles de yoduria entre 300-500 µg/L fue de 91,3% y por encima de 500 fue 9.7% lo cual implicó el riesgo de desarrollar enfermedades tiroideas autoinmunes. Las embarazadas presentaron una mediana urinaria de yodo 484 µg/L, diabetes gestacional e hipotiroidismo subclínico en 50%. Conclusión: Para normalizar los niveles de yoduria, es necesario disminuir la cantidad de yodo en la sal. La recomendación es insistir en el monitoreo de la adecuada yodación de las sales de consumo familiar y continuar con la vigilancia y el monitoreo constante en sitios centinelas divulgando la importancia de la adecuada ingesta de yodo a la población. Un régimen dietético a las embarazadas es necesario implementar en el primer trimestre del embarazo.

El número reproductivo básico (R0): consideraciones para su aplicación en la salud pública / Unraveling R0: considerations for public health applications

Evaluamos el uso en la salud pública del número reproductivo básico (R0), por el cual se estima la velocidad con que una enfermedad puede propagarse en una población. Estas estimaciones son de gran interés en el campo de la salud pública como quedó de manifiesto en ocasión de la pandemia del 2009 por el virus gripal A (H1N1). Revisamos los métodos usados comúnmente para estimar el R0, examinamos su utilidad práctica y determinamos la forma en que las estimaciones de este parámetro epidemiológico pueden servir de fundamento para tomar decisiones relativas a las estrategias de mitigación. Por sí solo, el R0 es una medida insuficiente de la dinámica de las enfermedades infecciosas en las poblaciones; hay otros parámetros que pueden aportar información más útil. No obstante, la estimación del R0 en una población determinada es útil para entender la transmisión de una enfermedad en ella. Si se considera el R0 en el contexto de otros parámetros epidemiológicos importantes, su utilidad puede consistir en que permite conocer mejor un brote epidémico y preparar la respuesta de salud pública correspondiente.

We assessed public health use of R0, the basic reproduction number, which estimates the speed at which a disease is capable of spreading in a population. These estimates are of great public health interest, as evidenced during the 2009 influenza A (H1N1) vírus pandemic. We reviewed methods commonly used to estimate R0, examined their practical utility, and assessed how estimates of this epidemiological parameter can inform mitigation strategy decisions. In isolation, R0 is a suboptimal gauge of infectious disease dynamics across populations; other disease parameters may provide more useful information. Nonetheless, estimation of R0 for a particular population is useful for understanding transmission in the study population. Considered in the context of other epidemiologically important parameters, the value of R0 may lie in better understanding an outbreak and in preparing a public health response.

Circadian rhythms in liver metabolism and disease

Mounting research evidence demonstrates a significant negative impact of circadian disruption on human health. Shift work, chronic jet lag and sleep disturbances are associated with increased incidence of metabolic syndrome, and consequently result in obesity, type 2 diabetes and dyslipidemia. Here, these associations are reviewed with respect to liver metabolism and disease.

Subtle changes in thyroid indices during a placebo‑controlled study of an extract of Withania somnifera in persons with bipolar disorder.

Laboratory indices of thyroid function (TSH, Free T4, and T3) were measured in a randomized clinical trial in which Ashwagandha (ASW) was used to improve cognitive function in patients with bipolar disorder. This was done in light of a case‑report of ASW‑associated thyrotoxicosis, and data from mice administered ASW that showed significant increases in thyroxine levels. Ten (of the original 60) patients showed abnormal results in one of the thyroid measures either at the beginning or end of the 8‑week study. One ASW‑ treated patient had subclinical hypothyroidism (TSH ‑ 5.7 mIU/L) at baseline that normalized, and all three ASW treated patients experienced T4 increases from baseline (7%, 12%, and 24%). Six of 7 placebo‑assigned patients showed decreases in T4 from baseline (4% to 23%), and one patient’s TSH moved from the normal to subclinical hypothyroid range (6.96 mIU/L). As thyroid indices were done for safety, and not the primary goal of the original study, only 16.7% had abnormal thyroid indices, and as there was no sub‑stratification for treatment assignment by thyroid status, unequal numbers of subjects received ASW (n = 3) or placebo (n = 7). In spite of these limitations, the subtle laboratory changes noted in thyroid indices in an 8‑week study suggest that ASW may increase thyroxine levels, and therefore vigilance regarding hyperthyroidism may be warranted. Nonetheless, the thyroid enhancing properties of ASW may also represent a clinical opportunity for the treatment of subclinical hypothyroidism, and these results suggest the need for further study of the effects of ASW on thyroid indices, especially in those with bipolar and unipolar mood disorders.

Strain gauges's analysis on implant-retained prosthesis' cast accuracy.

Introduction: A proper cast is essential for a successful rehabilitation with implant prostheses, in order to produce better structures and induce less strain on the implants. Aims: The aim of this study was to evaluate the precision of four different mold filling techniques and verify an accurate methodology to evaluate these techniques. Materials and Methods: A total of 40 casts were obtained from a metallic matrix simulating three unit implant-retained prostheses. The molds were filled using four different techniques in four groups (n = 10): Group 1 - Single-portion filling technique; Group 2 - Two-step filling technique; Group 3 - Latex cylinder technique; Group 4 - Joining the implant analogs previously to the mold filling. A titanium framework was obtained and used as a reference to evaluate the marginal misfit and tension forces in each cast. Vertical misfit was measured with an optical microscope with an increase of 120 times following the single-screw test protocol. Strain was quantified using strain gauges. Data were analyzed using one-way ANOVA (Tukey's test) (α =0.05). The correlation between strain and vertical misfit was evaluated by Pearson test. Results: The misfit values did not present statistical difference (P = 0.979), while the strain results showed statistical difference between Groups 3 and 4 (P = 0.027). Conclusions: The splinting technique was considered to be as efficient as the conventional technique. The strain gauge methodology was accurate for strain measurements and cast distortion evaluation. There was no correlation between strain and marginal misfit.