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Vol. 52. Issue 6.
Pages 501-506 (1 June 2000)
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Vol. 52. Issue 6.
Pages 501-506 (1 June 2000)
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Correlación entre carga viral elevada y concentraciones de TNF-α y cICAM-1 en el plasma de niños infectados por el VIH-1
Relationship between high plasma viral load and levels of tnf-a and cicam-1 in vertically hiv-1 infected children
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S. Resinoa, J.L. Jiméneza, J.M. Bellóna, D. Gurbindob, M.A. Muñoz-Fernándeza,
Corresponding author
Mmunoz@cbm.uam.es

Correspondencia: Hospital General Universitario Gregorio Marañón. División de Inmunología. Dr. Esquerdo, 46. 28007 Madrid
a Secciones de Inmunología Hospital General Universitario Gregorio Marañón. Madrid.
b Inmuno-Pediatría. Hospital General Universitario Gregorio Marañón. Madrid.
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Objetivo

Analizar si existe relación entre los valores plasmáticos del factor de necrosis tumoral (TNF-α) y la molécula de adhesión intercelular circulante tipo 1 (cICAM-1) con valores de carga viral plasmática (CV) en niños infectados verticalmente por el VIH.

Pacientes y métodos

Estudiamos 44 niños VIH-1 y un grupo control de 38 niños no infectados por el VIH-1. Las subpoblaciones celulares se realizaron por citometría de flujo, las concentraciones de TNF-α y cICAM-1 se cuantificaron por técnicas de enzimoinmunoanálisis y la CV se cuantificó mediante un análisis molecular estándar comercial.

Resultados

Los niños infectados por el VIH-1 presentaron valores significativamente más altos de TNF-α y cICAM-1 que los niños del grupo control. Dividimos a los niños VIH-1 según los valores de CV. Los niños VIH-1 con CV mayor de 50.000 copias/ml produjeron más TNF-α (12,83; IC del 95%: 24,71-0,95 pg/ml) y cICAM-1 (248,94; IC del 95%: 419,01-78,84 ng/ml) que los niños VIH-1 con CV inferior a 50.000 copias/ml, de tal forma que se producía un incremento de 6,57 pg/ml de TNF-α y de 119,97 ng/ml de cICAM-1 por cada log10 de CV.

Conclusiones

Nuestros datos indican que a medida que en el plasma de los niños VIH-1 se incrementan los valores de CV también se incrementan los valores de TNF-α y cICAM-1.

Palabras clave:
VIH
Niños
Carga viral
TNF-α
cICAM-1
Objective

To assess the relationship among plasma TNF-α and cICAM-1 levels and plasma viral load (VL) in HIV-infected children and to compare these values with those of healthy non-HIV infected children.

Patients and methods

We studied 44 HIV-infected children and 38 non-HIV-infected children. The VL was quantified using standard molecular assay. CD4 and CD8 lymphocyte subpopulations were determined by flow cytometry. TNF-α and cICAM-1 were quantified using commercially available specific enzyme-linked immunosorbent assay (ELISA).

Results

Levels of TNF-α and cICAM-1 were higher in HIV-infect-ed children than in non-HIV infected children. HIV-infected children with VL > 50000 copies/ml had higher levels of TNF-α (12.83; 95% CI: 24.71 to 0.95 pg/ml) and cICAM-1 (248.94; 95% CI: 419.01 to 78.84 ng/ml) than HIV-infected children with VL < 50000 copies/ml. Interestingly, we found an increase of 6.57 pg/ml of TNF-α and 119.97 ng/ml of cICAM-1 levels for each log10 of VL.

conclusions

HIV-infected children had higher levels of TNF-α and cICAM-1 than healthy controls. Our data indicate a positive correlation among plasma TNF-a and cICAM-1 and VL levels.

Key words:
HIV
Children
Viral load
TNF-a
cICAM-1
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