M. Juffrie et al., Inflammatory mediators in dengue virus infection in children: Interleukin-6 and its relation to C-reactive protein and secretory phospholipase A2, AM J TROP M, 65(1), 2001, pp. 70-75
Citations number
51
Categorie Soggetti
Envirnomentale Medicine & Public Health","Medical Research General Topics
To assess the potential role of interleukin-6 (IL-6) in the pathogenesis of
dengue virus infection, levels of this cytokine were measured in children
with dengue vir-us infection on admission to the hospital. As presumed surr
ogate markers of IL-6. C-reactive protein (CRP) and secretory phospholipase
A2 (sPLA2) were measured. Three groups were studied: 33 apparently healthy
children as negative controls, I I children with bacterial infections as p
ositive controls, and 186 children with serologically documented dengue vir
us infection. One-hundred and fifteen patients had dengue fever (DF) and 71
had dengue hemorrhagic fever (DHF). Compared with healthy controls, dengue
shock syndrome (DSS) patients had significantly higher levels of IL-6 on a
dmission (P < 0.05), comparable with those in positive controls. Dengue pat
ients with shock had significantly higher levels of IL-6 than normotensive
patients (P < 0.001) and higher levels of IL-6 were associated with a highe
r incidence of ascites. C-reactive protein concentrations in dengue patient
s and in healthy children were not different, but lower than in children wi
th bacterial infections (P = 0.008). Secretory phospholipase A2 levels were
higher in dengue patients than in apparently healthy children (P <less tha
n or equal to> 0.05) and similar to those in children with bacterial infect
ion. Dengue shock syndrome patients had significantly higher sPLA2 concentr
ations than normotensive patients (P = 0.02). These data indicate that IL-6
and sPLA2 may have a pathogenetic role only in the most severe forms of de
ngue virus infection.