TLR2 and TLR4 expression on CD14+ cells from preterm infants with risk factors for neonatal sepsis development

نویسنده

  • Javier Mancilla-Ramírez
چکیده

Introduction: Neonatal sepsis (NS) is a systemic infection exhibiting 25% lethality among infected children, and it poses a higher risk in preterm than in full-term neonates. Routine microbiological culture, hematological quantification, IL-6, IL-8, C-reactive protein and procalcitonin determinations are the most commonly used tests to diagnose sepsis. However, these methods have substantial limitations due to the associated variation, low degree of sensitivity and long period of time required for execution. These factors decrease the efficiency of an early diagnosis. Toll-like receptors are involved in native immunity recognition and the stimulation of antimicrobial mechanisms. Therefore, they may be altered early during the systemic infection and may be useful in the diagnosis of sepsis. Methods: In this work, we analyze the expression of TLR2 and TLR4 on CD14+ cells as early markers for sepsis in preterm neonates. Results: Our results show that the percentage of CD14int cells and their TLR2 expression were significantly altered in preterm infants with diagnosed Resumen Introducción: La sepsis neonatal (SN) es una infección sistémica con un 25% de mortalidad entre los niños infectados, y es más riesgosa en neonatos prematuros que en recién nacidos a término. Los exámenes más comunes para diagnosticar sepsis son cultivo microbiológico de rutina, cuantificación de hemoglobina, IL-6, IL-8, proteína C reactiva y marcadores de procalcitonina. Sin embargo, estos métodos tienen limitaciones sustanciales debido a la variación, el bajo grado de sensibilidad y el largo periodo requerido para su ejecución e impiden el eficaz diagnóstico temprano. Los receptores tipo Toll están involucrados con la respuesta de inmunidad natural y la estimulación de mecanismos antimicrobianos. Por lo tanto, pueden estar alterados en las etapas iniciales durante la infección sistémica y pueden ser útiles en el diagnóstico de sepsis. Métodos: En este trabajo analizamos la expresión de receptores TLR2 y TLR4 en células CD14+ como marcadores tempranos de sepsis en neonatos prematuros. Resultados: Nuestros resultados presentan que el porcentaje de células www.medigraphic.org.mx

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تاریخ انتشار 2012