ABSTRACT
A produção excessiva de espécies reativas do oxigênio pelos polimorfonucleares está associada a dano tecidual durante inflamação. A pentoxifilina, um inibidor da fosfodiesterase, diminui a produção de citosinas pró-inflamatórias e o dano tecidual induzido pelo lipopolissacarídeo (LPS)...
Excessive production of reactive oxygen species by PMN is associated with tissue damage during inflammation. Pentoxifylline, a phosphodiesterase inhibitor, decreases proinflammatory cytokine production and tissue injury after LPS challenge...
Subject(s)
Animals , Male , Rats , Cytosine/analysis , Endotoxemia/therapy , Pentoxifylline/therapeutic use , Acute Disease , Acute-Phase Reaction , Sepsis/prevention & control , Nitric Oxide/therapeutic useABSTRACT
A fin de evaluar el comportamiento de algunas citosinas o interleukinas (IL-4, IL-6, IFN-y) durante el embarazo, seestudiaron 25 mujeres embarazadas durante los tres trimestres, 12 adolescentes y 13 adultas. Las determinaciones de las interleukinas se realizaron por el método de ELISA, tipo sándwich, observándose incremento significativo (p<0,05) para la IL-4 entre el 1er y 2do trimestre (8,18±2,43 vs 53,42±17,25 pg/ml) y entre el 1er y el 3er (8,18±2,43 vs 42,47 ± 6,27 pg/ml) pero no entre el 2do y el 3er (53,42 ± 17,25 vs 42,47 ± 6,27 pg/ml) para todas las embarazadas, con un patrón similar en las adolescentes y adultas, pero la comparación entre ellas por edad sólo mostró diferencia significativa para la evaluación del 2do trimestre, correspondiendo a las adultas niveles más altos (60,53± 17,47 vs 45,71±13,85 pg/ml). Con relación a la IL-6, se observó que los valores se incrementan a medida que avanza el embarazo con diferencia significativa (p<0,05) entre los trimestres (2,01±3,46; 9,25±7,22; 11,54±9,40 pg/ml) pero similar para ambos grupos etarios sin diferencia estadística significativa entre ellos en ninguno de los periodos. Para el IFN-y se observó un ligero aumento para todas las embarazadas que no alcanzó diferencia significativa entre los trimestres ni para los grupos etarios considerados. Se concluye que el embarazo induce aumentos significativos de IL-4, de IL-6 y en menor grado de IFN-y y que estos cambios no están asociados a la edad de la embarazada.
In order to assess interleukin levels (IL-4, IL-6, IFN-y) during pregnancy, 25 pregnant women (12 adolescents and13 adults) along the three trimesters were evaluated. An ELISA test was performed to determine serum interleukin. A significant increase (p<0.05) for IL-4 between first and second trimester (8.18±2.43 vs. 53.42±17.25 pg/ml) and between first and third (8.18±2.43 vs. 42.47 ± 6.27 pg/ml) but not between second and third (53.42 ± 17.25 vs. 42.47 ± 6.27 pg/ml) was observed. Similar pattern of increase was found for adolescents and adults, but comparison by age showed significantly higher levels in adults at second trimester (60.53± 17.47 vs. 45.71±13.85 pg/ml). Regarding IL-6, increase during pregnancy was also observed, reaching significant differences between trimesters (2.01±3.46; 9.25±7.22; 11.54±9.40 pg/ml): A similar pattern was found for adolescents and adults, but no differences by age were found at any moment. For IFN-y, a slight increase was observed but it did not reach significant differences either between trimesters or by age groups. It is concluded that pregnancy induced significant increases of IL-4 and IL-6, and in a lesser degree for IFN-y but age of the women was not related to the changes.