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  • Title: Monocyte HLA-DR expression as predictor of poor outcome in neonates with late onset neonatal sepsis.
    Author: Genel F, Atlihan F, Ozsu E, Ozbek E.
    Journal: J Infect; 2010 Mar; 60(3):224-8. PubMed ID: 20025903.
    Abstract:
    OBJECTIVES: Down regulation of HLA-DR expression on monocytes has been reported in adult sepsis. The aims of this study were, first to evaluate monocyte HLA-DR expression in late onset neonatal infection and second to investigate the prognostic value of monocyte HLA-DR expression at onset of symptoms for the final outcome. METHODS: Peripheral blood samples were taken from neonates, who were classified into three groups: late onset neonatal sepsis group (n=40); non-infective disorders group (n=24) and the control group (n=25). Monocyte expression of HLA-DR was determined by flow cytometry. RESULTS: The percentage of monocytes expressing HLA-DR was lower in neonates with late onset sepsis (p<0.05). Of the 40 septic patients enrolled in the study, 32 survived, while 8 died. The percentage of HLA-DR expressing monocytes was significantly lower in the non-survivor sepsis group (16.6%) compared with that in the survivor sepsis group (45.2%). The optimal cutoff value of HLA-DR for predicting mortality was 30% with 87% sensitivity and 81% specificity. Patients with monocyte HLA-DR expression </=30% had lower survival rate with a 30-fold higher risk of mortality (Odds ratio 30; 95% CI 3-295). CONCLUSION: According to our findings, monocyte HLA-DR expression seems to be an early predictive marker for the prognosis in late onset neonatal sepsis.
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