Diabetes tipo 2 y síndrome metabólico, utilidad del índice triglicéridos/HDL colesterol en Pediatría / Type 2 diabetes mellitus and the metabolic syndrome, usefulness of the triglyceride/HDL cholesterol indexes in pediatrics

Introducción: se estima que la diabetes mellitus tipo 2 en la edad pediátrica, representa el 2-3 por ciento de todos los casos; sin embargo, en los últimos años ha mostrado un incremento de 10 veces. Objetivos: describir los elementos clave que permitan realizar una detección precoz desde la infancia, y destacar la importancia del índice triglicéridos/HDL colesterol como indicador de riesgo metabólico e insulinorresistencia, para lo cual se revisaron las bases de datos Medline/Pub-Med, SciELO, BVS España, la Sociedad Iberoamericana de Información Científica, Ediciones DOYMA y Elsevier, de los últimos 10 años (desde junio de 2005 a junio 2015) en inglés y en español. Desarrollo: la diabetes mellitus tipo 2 es el resultado de la interacción de factores genéticos y ambientales. El síndrome metabólico es una agrupación de factores de riesgo cardiovascular y de diabetes tipo 2. Se recomienda incorporar nuevas variables como el cociente triglicéridos/HDL colesterol para implementar estrategias preventivas. Consideraciones finales: se deben hacer pesquisas activas en las poblaciones de riesgo. La elevación del índice triglicéridos/HDL colesterol se relaciona con la insulinorresistencia y resulta de fácil aplicación(AU)

Introduction: it is estimated that type 2 diabetes mellitus accounts for 2-3 percent of all cases at pediatric ages; however, there has been a 10-fold increase of the number of patients in the last few years. Objectives: to describe the key elements for early detection of diabetes in childhood and to stress the importance of the triglyceride/HDL cholesterol ratio as a sign of metabolic risk and insulin resistance. To this end, Medline/PubMed, SciELO, BVS Spain, the Ibero-American Society of Scientific Information, DOYMA and Elsevier Editions databases in the last ten years were reviewed (June 2005 to June 2015) in English and Spanish. Development: type 2 diabetes mellitus is the result of genetic and environmental risk factors. The metabolic syndrome is a grouping of cardiovascular and type 2 risk factors. It is then recommended to add new variables such as triglyceride/HDL cholesterol ratio to implement preventive strategies. Final thoughts: active screening should be performed in risk populations. High triglyceride/HDL cholesterol ratio is related to insulin resistance and the application of this indicator is easy(AU)

Chagas disease, adipose tissue and the metabolic syndrome

Trypanosoma cruzi infection of the adipose tissue of mice triggers the local expression of inflammatory mediators and a reduction in the expression of the adipokine adiponectin. T. cruzi can be detected in adipose tissue by PCR 300 days post-infection. Infection of cultured adipocytes results in increased expression of cytokines and chemokines and a reduction in the expression of adiponectin and the peroxisome proliferator-activated receptor ³, both of which are negative regulators of inflammation. Infection also results in the upregulation of cyclin D1, the Notch pathway, and extracellular signal-regulated kinase and a reduction in the expression of caveolin-1. Thus, T. cruzi infection of cultured adipocytes leads to an upregulation of the inflammatory process. Since adiponectin null mice have a cardiomyopathic phenotype, it is possible that the reduction in adiponectin contributes to the pathogenesis of chagasic cardiomyopathy. Adipose tissue may serve as a reservoir for T. cruzi from which parasites can become reactivated during periods of immunosuppression. T. cruzi infection of mice often results in hypoglycemia. In contrast, hyperglycemia as observed in diabetes results in increased parasitemia and mortality. Adipose tissue is an important target tissue of T. cruzi and the infection of this tissue is associated with a profound impact on systemic metabolism, increasing the risk of metabolic syndrome.