4 research outputs found

    Role of microRNAs in alcohol-induced liver disorders and non-alcoholic fatty liver disease

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    [EN]MicroRNAs (miRNAs) are small non-coding RNAs that regulate multiple physiological and pathological functions through the modulation of gene expression at the post-transcriptional level. Accumulating evidence has established a role for miRNAs in the development and pathogenesis of liver disease. Specifically, a large number of studies have assessed the role of miRNAs in alcoholic liver disease (ALD) and non-alcoholic fatty liver disease (NAFLD), two diseases that share common underlying mechanisms and pathological characteristics. The purpose of the current review is to summarize and update the body of literature investigating the role of miRNAs in liver disease. In addition, the potential use of miRNAs as biomarkers and/or therapeutic targets is discussed. Among all miRNAs analyzed, miR-34a, miR-122 and miR-155 are most involved in the pathogenesis of NAFLD. Of note, these three miRNAs have also been implicated in ALD, reinforcing a common disease mechanism between these two entities and the pleiotropic effects of specific miRNAs. Currently, no single miRNA or panel of miRNAs has been identified for the detection of, or staging of ALD or NAFLD. While promising results have been shown in murine models, no therapeutic based-miRNA agents have been developed for use in humans with liver disease

    Prevalencia e importancia pronóstica de la anemia en pacientes pluripatológicos

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    INTRODUCTION: The presence of anemia is a common finding among patients admitted to Internal Medicine Departments, but, although several studies have shown the influence of anemia on quality of life, mortality and morbidity in elderly patients, its relevance remains unclear in subjects who meet the criteria for patient with multiple comorbidities (MCP). Our objective was to analyze the prevalence and prognostic importance of anemia in a cohort of patients with multiple comorbidities. PATIENTS AND METHODS: a prospective study was conducted by consecutively selecting a cohort of patients who met criteria for MCP during a year and had anemia on admission. Analytical, sociodemographic, clinical and functional variables were collected at admission and one year later vital status, number of admissions and functional status were also assessed. The association of abovementioned variables with the presence of anemia and overall one-year mortality was analyzed by univariable and multivariable analysis. RESULTS: two hundred and thirty four patients were included, with a mean age (standard deviation) of 80.32 (9.2) years. Of them, 104 (44.5%) were females and 130 (55.5%) males and 60.59% had anemia. Leading causes of anemia were iron deficiency anemia (47.55%) and chronic illness anemia (29.37%). Overall one-year mortality rate was 55.94% among patients with anemia and 35.22% among patients without anemia (p = 0.003). After multivariable logistic regression analysis, variables independently and significantly associated with mortality were anemia, > 3 points on Charlson´s index and chronic respiratory failure. CONCLUSION: the prognostic impact of anemia reinforces the importance of a comprehensive evaluation of patients with multiple comorbidities.INTRODUCCIÓN: la presencia de anemia es un hallazgo frecuente entre los enfermos que ingresan en los servicios de Medicina Interna, aunque diferentes estudios han demostrado la influencia de la anemia sobre la calidad de vida, mortalidad y morbilidad en pacientes de edad avanzada, no se han realizado trabajos específicos en sujetos que cumplieran criterios estrictos de paciente pluripatológico (PPP). Nuestro objetivo fue analizar la prevalencia e importancia pronóstica de la anemia en una cohorte de pacientes pluripatológicos. PACIENTES Y MÉTODO: estudio prospectivo en el que se incluyeron una cohorte de pacientes pluripatológicos recogidos de forma consecutiva entre pacientes ingresados a lo largo de un año; se estudió la presencia de anemia y se recogieron variables analíticas, sociodemográficas, clínicas y funcionales al ingreso y reevaluación del estado vital y funcional al año. Se analizaron las diferencias en la presencia o no de anemia y en la mortalidad al año, incluyendo como factores de confusión variables sociodemográficas y de comorbilidad mediante análisis univariante y de regresión logística multivariante. RESULTADOS: fueron incluidos 234 pacientes con edad media (desviación estándar) de 80,3 (9,2) años, 104 (44,5%) mujeres y 130 (55,5%) hombres, de los que presentaba anemia el 60,6%. Los tipos principales de anemia fueron anemia ferropénica (47,5% del total de anemias) y de procesos crónicos (29,4%). La mortalidad global fue del 56% en los pacientes con anemia y del 35,2% en los pacientes sin anemia (p = 0,003). Tras el análisis multivariante de regresión logística, las variables asociadas de forma independiente y significativa con la mortalidad a un año fueron la presencia de anemia, una puntuación > 3 en el índice de Charlson y la insuficiencia respiratoria crónica. CONCLUSIONES: la importancia pronóstica de la anemia en pacientes pluripatológicos, resultado no comunicado previamente, refuerza la importancia de una valoración global y completa de estos pacientes
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