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Evaluation of the (1,3)-beta-D-glucan assay for the diagnosis of neonatal invasive yeast infections

Abstract : Most newborns in the neonatal intensive care unit (NICU) are premature and at risk of invasive fungal infections (IFIs). Invasive yeast infections (IYIs) are the most common fungal infections in this population. These infections are difficult to diagnose because symptoms are nonspecific, and the sensitivity of blood cultures is low. The serum (1,3)-beta-D-glucan (BDG) assay provides a reliable marker for the diagnosis of IFIs in adults with haematological malignancies. We assessed the diagnostic performance of this test in neonatal IYIs and its contribution to the monitoring of antifungal treatment. A retrospective study was performed in the NICU of the French University Hospital of Amiens from February 2012 to February 2014. Forty-seven neonates (33 males, 14 females) with a median gestational age of 30 weeks (IQR: 27-31) and median birth weight of 1200 g (IQR: 968-1700) were included and divided into three groups: 21 control neonates (CTRL), 20 neonates with probable IYI (PB), and six with proven IYI (PV). Median BDG levels were significantly higher in the global IYI group (PB + PV): 149 pg/ml (IQR: 85-364) vs. CTRL group: 39 pg/ml (IQR: 20-94) (P < .001). The optimal cut-off was 106 pg/ml (sensitivity 61.5%; specificity 81%). BDG levels decreased with antifungal treatment. BDG was detectable in cerebrospinal fluid, but the interest of this for diagnostic purposes remains unclear. Our results suggest that the BDG assay may be useful for the early identification of IYIs in neonates and for monitoring antifungal therapy efficacy.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03559757
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Soumis le : lundi 7 février 2022 - 10:45:52
Dernière modification le : vendredi 25 mars 2022 - 18:12:15

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Marjorie Cornu, Sabrina Goudjil, Guy Kongolo, Andre Leke, Daniel Poulain, et al.. Evaluation of the (1,3)-beta-D-glucan assay for the diagnosis of neonatal invasive yeast infections. Medical Mycology, 2018, 56 (1), pp.78-87. ⟨10.1093/mmy/myx021⟩. ⟨hal-03559757⟩

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