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Los subconjuntos de linfocitos en niños sanos durante los primeros 5 años de vida
JAMA
|March 18, 1992
Resumen
Los recuentos de linfocitos CD4 y CD8 disminuyen con la edad en los niños. Este estudio establece rangos de referencia específicos por edad para las células CD4 y CD8, cruciales para interpretar el estado inmunológico pediátrico.
Área de la Ciencia:
- Inmunología Inmunología.
- Hematología Pediátrica.
Sus antecedentes:
- La interpretación precisa de los subconjuntos de linfocitos CD4 y CD8 es vital en la salud pediátrica.
- Los rangos de referencia establecidos para los subconjuntos de linfocitos se basan principalmente en datos de adultos.
Objetivo del estudio:
- Para determinar los cambios relacionados con la edad en los recuentos de linfocitos CD4 y CD8 y la relación CD4/CD8 en niños sanos.
- Establecer quinto y noventa y cinco percentiles para estos valores en diferentes grupos de edad pediátrica.
Principales métodos:
- La citometría de flujo se utilizó para el análisis fenotípico de los subconjuntos de linfocitos.
- Se analizaron muestras de sangre de 208 niños sanos de entre 1 y 59 meses de edad.
Principales resultados:
- Los recuentos de linfocitos CD4 y CD8 disminuyen significativamente con el aumento de la edad.
- El porcentaje de linfocitos CD4 mostró una fuerte disminución dependiente de la edad, mientras que el porcentaje de CD8 aumentó.
- Se determinaron los recuentos medianos de CD4 y sus percentiles 5o-95o para varios estratos de edad pediátrica.
Conclusiones:
- Los recuentos de linfocitos CD4 pediátricos son sustancialmente más altos que los valores de los adultos.
- La edad es un factor crítico para interpretar los valores del subconjunto de linfocitos en niños.
- Estos hallazgos son particularmente relevantes para el monitoreo de la infección pediátrica por el VIH y para guiar las decisiones de tratamiento.
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