Cerebellar Microstructural Organization is Altered by Complications of Premature Birth: A Case-Control Study

Marie Brossard-Racine, Andrea Poretti, Jonathan Murnick, Marine Bouyssi-Kobar, Robert McCarter, Adre J. du Plessis, Catherine Limperopoulos

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives To compare regional cerebellar microstructure, as measured by diffusion tensor imaging (DTI), between preterm infants at term-equivalent age and healthy term-born control neonates, and to explore associations between DTI findings and clinical risk factors. Study design In this case-control study, DTI studies were performed in 73 premature infants born ≤32 weeks and ≤1500 g birth weight and 73 full-term-born controls from healthy pregnancies. Using a region of interest approach, fractional anisotropy (FA) and mean diffusivity (MD) were extracted in 7 cerebellar regions including the anterior vermis, the right/left superior cerebellar peduncles, the middle cerebellar peduncle, and the dentate nuclei. To validate further our DTI measurements, we measured FA and MD in the genu of the corpus callosum and splenium. FA and MD were compared between groups using analyses of multiple linear regression models. Results Preterm infants at term-equivalent age presented with higher FA in the dentate nuclei (<.001) and middle cerebellar peduncle (.028), and lower MD in the vermis (.023) compared with controls. Conversely, preterm infants showed reduced FA and increased MD in both the genu of the corpus callosum and splenium (P < .001). Independent risk factors associated with altered FA and MD in the cerebellum included low Apgar score, supratentorial injury, compromised cardiorespiratory function, and surgery for necrotizing enterocolitis and patent ductus arteriosus. Conclusions This DTI study provides evidence that complications of premature birth are associated with altered cerebellar microstructural organization when compared with term-born control infants.

Original languageEnglish (US)
Pages (from-to)28-33.e1
JournalJournal of Pediatrics
Volume182
DOIs
StatePublished - Mar 1 2017

Keywords

  • cerebellar injury
  • cerebellum
  • microstructure
  • prematurity

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

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