Inflammatory and immunological markers in preterm infants: correlation with disease

Area of Science:

• Neonatal immunology
• Infectious disease diagnostics
• Biomarker research

Background:

• Neonatal infections often lack typical symptoms, complicating diagnosis.
• C-reactive protein (CRP) and neopterin are established infection markers in adults.
• Cytokines are proposed as indicators of immune activation and infection.

Purpose of the Study:

• To evaluate CRP, neopterin, soluble IL-2R, TNF-alpha, and IFN-gamma levels in neonates.
• To establish reference ranges for these biomarkers in cord blood.
• To assess the utility of these markers for early sepsis diagnosis and monitoring in intensive care.

Main Methods:

• Cord blood samples were collected from premature and term neonates.
• Levels of CRP, neopterin, soluble IL-2R, TNF-alpha, and IFN-gamma were measured.
• Serial measurements were performed on neonates requiring intensive care.

Main Results:

• Reference ranges for the selected biomarkers were established.
• Simultaneous measurement of CRP and neopterin showed promise for early sepsis diagnosis in preterm infants.
• Soluble IL-2R may also contribute to accurate sepsis diagnosis.
• These markers may assist in differentiating bacterial and viral infections.
• Serial measurements could aid in the early diagnosis of necrotizing enterocolitis (NEC).

Conclusions:

• Combined CRP and neopterin measurements, potentially with soluble IL-2R, offer a reliable method for early sepsis detection in preterm neonates.
• These biomarkers can aid in distinguishing between bacterial and viral etiologies.
• Serial monitoring of these markers is valuable for diagnosing neonatal intensive care conditions like NEC.