Measurement of protein flux with positron emission tomography in neonates

Vijay Nama, Jim K. Kozlowski, Aaron Hamvas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Aim - To determine whether abnormal transvascular protein flux can be measured with positron emission tomography (PET) in neonates with respiratory distress syndrome (RDS). Methods - Fourteen infants with normal gas exchange (non-RDS group) underwent one PET measurement and 12 infants with RDS (the RDS group) underwent two measurements of protein flux, as determined by the pulmonary transcapillary escape rate for 68Gallium labelled transferrin (PTCER). Results - The mean PTCER for the RDS infants (132 ± 39 10-4/min) was significantly greater than that for infants without RDS (75 ± 27 10- 4/min). PTCER did not change between measurements in the infants with RDS, including five who received and responded to surfactant replacement between the two scans. Conclusions - Increased transvascular flux of large molecular weight proteins complicates RDS in preterm infants. PET provides a tool with which to evaluate the processes that contribute to pulmonary dysfunction in neonates.

Original languageEnglish (US)
Pages (from-to)F26-F29
JournalArchives of Disease in Childhood: Fetal and Neonatal Edition
Issue number1
StatePublished - 1999


  • Positron emission tomography
  • Pulmonary vascular permeability
  • Respiratory distress syndrome

ASJC Scopus subject areas

  • Obstetrics and Gynecology
  • Pediatrics, Perinatology, and Child Health


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