title: Glutamine effects on brain growth in very preterm children in the first year of life.
abstract: OBJECTIVE
  Glutamine supplementation in the neonatal period has been associated with increased brain structure volumes at school-age in very preterm children. The aim of this study was to clarify the emergence and specificity of differences in brain structure volumes, using growth trajectories of head circumference, weight, and length.
  
  
  METHODS
  Sixty-five very preterm (<32 weeks gestation) children, who originally took part in a randomized controlled trial on glutamine supplementation, participated. Head circumference, weight, and length, were measured at the neonatal intensive care unit, and at routine follow-up assessments at the outpatient clinic and well baby clinics. Magnetic Resonance Imaging was used to determine brain structure volumes at school-age. Growth trajectories were investigated using multilevel modeling analyses.
  
  
  RESULTS
  Head circumference in the first year of life was positively associated with white matter volume and grey matter volume (range r = 0.55-0.81, all p < 0.002) at school-age. Furthermore, neonatal glutamine supplementation was associated with increased head circumference growth (p = 0.008) in the first year of life, but not with increased growth in weight (p = 0.44) and length (p = 0.73).
  
  
  CONCLUSIONS
  This study indicates a specific increase in head circumference growth in very preterm children that received neonatal glutamine supplementation, and suggests that group differences in brain structure volumes at school-age may have emerged during the first year of life.
authors.affiliation: VU University Amsterdam, Department of Clinical Neuropsychology, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands. Electronic address: jf.de.kieviet@vu.nl.
authors.forename: Jorrit F
authors.initials: JF
authors.lastname: de Kieviet
authors.affiliation: VU University Amsterdam, Department of Clinical Neuropsychology, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands. Electronic address: pj.vuijk@vu.nl.
authors.forename: Pieter J
authors.initials: PJ
authors.lastname: Vuijk
authors.affiliation: University Medical Center Utrecht, Department of Paediatric Gastroenterology, Utrecht, The Netherlands. Electronic address: A.vandenBerg-7@umcutrecht.nl.
authors.forename: Anemone
authors.initials: A
authors.lastname: van den Berg
authors.affiliation: VU University Medical Center, Department of Paediatrics, Amsterdam, The Netherlands. Electronic address: hn.lafeber@vumc.nl.
authors.forename: Harrie N
authors.initials: HN
authors.lastname: Lafeber
authors.affiliation: VU University Amsterdam, Department of Clinical Neuropsychology, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands. Electronic address: j.oosterlaan@vu.nl.
authors.forename: Jaap
authors.initials: J
authors.lastname: Oosterlaan
authors.affiliation: VU University Medical Center, Department of Paediatrics, Amsterdam, The Netherlands; Danone Research Centre for Specialized Nutrition, Wageningen, The Netherlands. Electronic address: rm.vanelburg@vumc.nl.
authors.forename: Ruurd M
authors.initials: RM
authors.lastname: van Elburg
mesh_terms: D001835:Body Weight; D001921:Brain / Q000187:drug effects* / Q000254:growth & development; D002508:Cephalometry; D002648:Child; D002657:Child Development / Q000187:drug effects*; D005260:Female; D005500:Follow-Up Studies; D005973:Glutamine / Q000008:administration & dosage*; D006801:Humans; D007223:Infant; D007234:Infant, Premature / Q000254:growth & development*; D007363:Intensive Care Units, Neonatal; D008279:Magnetic Resonance Imaging; D008297:Male
chemical_list: D005973:Glutamine
keywords: Brain structure volumes; Glutamine; Growth; Head circumference; Multilevel modeling analyses; Prematurity