Identifying immune signatures of sepsis to increase diagnostic accuracy in very preterm babies.
Nat Commun
; 15(1): 388, 2024 Jan 09.
Article
em En
| MEDLINE
| ID: mdl-38195661
ABSTRACT
Bacterial infections are a major cause of mortality in preterm babies, yet our understanding of early-life disease-associated immune dysregulation remains limited. Here, we combine multi-parameter flow cytometry, single-cell RNA sequencing and plasma analysis to longitudinally profile blood from very preterm babies (<32 weeks gestation) across episodes of invasive bacterial infection (sepsis). We identify a dynamically changing blood immune signature of sepsis, including lymphopenia, reduced dendritic cell frequencies and myeloid cell HLA-DR expression, which characterizes sepsis even when the common clinical marker of inflammation, C-reactive protein, is not elevated. Furthermore, single-cell RNA sequencing identifies upregulation of amphiregulin in leukocyte populations during sepsis, which we validate as a plasma analyte that correlates with clinical signs of disease, even when C-reactive protein is normal. This study provides insights into immune pathways associated with early-life sepsis and identifies immune analytes as potential diagnostic adjuncts to standard tests to guide targeted antibiotic prescribing.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteína C-Reativa
/
Sepse
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Humans
/
Infant
/
Newborn
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article