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  • Title: Early cortical maturation predicts neurodevelopment in very preterm infants.
    Author: Kline JE, Illapani VSP, He L, Altaye M, Logan JW, Parikh NA.
    Journal: Arch Dis Child Fetal Neonatal Ed; 2020 Sep; 105(5):460-465. PubMed ID: 31704737.
    Abstract:
    OBJECTIVE: To evaluate the ability of four objectively defined, cortical maturation features-surface area, gyrification index, sulcal depth and curvature-from structural MRI at term-equivalent age (TEA) to independently predict cognitive and language development at 2 years corrected age in very preterm (VPT) infants. DESIGN: Population-based, prospective cohort study. Structural brain MRI was performed at term, between 40 and 44 weeks postmenstrual age and processed using the developing Human Connectome Project pipeline. SETTING: Multicentre study comprising four regional level III neonatal intensive care units in the Columbus, Ohio region. PATIENTS: 110 VPT infants (gestational age (GA) ≤ 31 weeks). MAIN OUTCOME MEASURES: Cognitive and language scores at 2 years corrected age on the Bayley Scales of Infant and Toddler Development, Third Edition. RESULTS: Of the 94 VPT infants with high-quality T2-weighted MRI scans, 75 infants (80%) returned for Bayley-III testing. Cortical surface area was positively correlated with cognitive and language scores in nearly every brain region. Curvature of the inner cortex was negatively correlated with Bayley scores in the frontal, parietal and temporal lobes. In multivariable regression models, adjusting for GA, sex, socioeconomic status, and injury score on MRI, regional measures of surface area and curvature independently explained more than one-third of the variance in cognitive and language scores at 2 years corrected age in our cohort. CONCLUSIONS: We identified increased cortical curvature at TEA as a new prognostic biomarker of adverse neurodevelopment in very premature infants. When combined with cortical surface area, it enhanced prediction of cognitive and language development. Larger studies are needed to externally validate our findings.
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