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Circulating adrenomedullin is increased in preterm newborns developing intraventricular hemorrhage
D Gazzolo1, E Marinoni, L Giovannini
1Department of Neonatology, G. Gaslini University Hospital, Genoa, Italy. dgazzolo@hotmail.com
Pediatric Research
|September 25, 2001
Summary
Plasma adrenomedullin may identify preterm infants at risk of intraventricular hemorrhage (IVH). Higher adrenomedullin levels correlated with IVH, suggesting a potential early diagnostic tool for this neonatal complication.
Area of Science:
- Neonatal Medicine
- Vascular Biology
- Biomarker Discovery
Background:
- Adrenomedullin is a vasoactive peptide involved in regulating cerebral blood flow.
- Intraventricular hemorrhage (IVH) is a significant complication in preterm newborns.
- Early identification of IVH risk in preterm infants is crucial for timely intervention.
Purpose of the Study:
- To investigate plasma adrenomedullin as a potential biomarker for identifying preterm infants at risk of intraventricular hemorrhage (IVH).
Main Methods:
- A case-control study was conducted comparing 24 preterm newborns with IVH to 48 matched controls without IVH.
- Plasma adrenomedullin levels were measured within 6 hours of birth.
- Cerebral ultrasound and middle cerebral artery Doppler velocimetry were performed.
Main Results:
- Preterm infants who developed IVH had significantly higher plasma adrenomedullin concentrations (20.1 +/- 4.5 fmol/mL) compared to controls (7.5 +/- 3.0 fmol/mL).
- Adrenomedullin levels correlated with middle cerebral artery pulsatility index (r = -0.77, p < 0.01) and IVH severity (r = 0.83, p < 0.01).
Conclusions:
- Plasma adrenomedullin may serve as a promising early diagnostic marker for IVH risk in preterm infants.
- This biomarker could aid in identifying at-risk neonates immediately after birth, before clinical signs or imaging evidence of hemorrhage appear.