Perinatal brain injury is a significant problem given the high incidence of prematurity in the United States, with an estimated increase of 28% over the past 20 years. It is now estimated that up to 40% of survivorsof perinatal brain injury are compromised neurologically, including motor deficits, learning and behavioral problems. Our overall hypothesis is that magnetic resonance spectroscopy (MRS) may be a biomarker of the diffuse component of perinatal white matter injury and that altered neonatal NAA and NAA/myo-inositol ratio will correlate with long term neurodevelopmental outcome and thalamo-cortical abnormalities as assessed with advanced MR techniques at 6 years of age. We will specifically focus on premature infants at term equivalent age and term infants with congenital heart disease (transposition of the great arteries and single ventricle physiology).
Our specific aims are:
Aim 1 : Determine """"""""normative levels"""""""" of absolute concentration of NAA and myo-inositol in neonatal cerebral white matter using a longitudinal study design by (1a) performing MRS in term infants with no risk factors for perinatal white matter injury;(1b) performing longitudinal neurodevelopmental assessment at 18 months, 36 months and 6 years of age;(1c) performing DTI and VM MR imaging at 6 yrs of age.
Aim 2 : To determine the levels of absolute concentration of NAA and myo-inositol in the cerebral white matter using a longitudinal study design by (2a) performing MRS in term equivalent premature infants (2b) performing longitudinal neurodevelopmental assessment at 18 months, 36 months and 6 years of age (2c) performing DTI and VM MR imaging at 6 yrs of age.
Aim 3 : To determine the levels of absolute concentration of NAA and myo-inositol in the cerebral white matter using a longitudinal study design by (3a) performing MRS in term infants with congenital heart disease (3b) performing longitudinal neurodevelopmental assessment at 18 months, 36 months and 6 years of age (3c) performing DTI and VM MR imaging at 6 yrs of age. As part of the career plan, the applicant will obtain skills in (1) advanced MR imaging techniques (2) clinical research outcome, advanced statistics and clinical management skills, and (3) neonatal neuropathology, pediatric neurology and pediatric neuro-psychology.
This longitudinally designed study , using both advanced MR imaging and neurocognitive testing, will allow us to study the effects of perinatal white matter injury on long term neurodevelopmental function and thalamo-cortical structural plasticity in childhood. This project will help identify neonates with perinatal white matter injury at high risk for developing poor neurodevelopmental outcome for early intervention services.
|Schmithorst, Vincent J; Votava-Smith, Jodie K; Tran, Nhu et al. (2018) Structural network topology correlates of microstructural brain dysmaturation in term infants with congenital heart disease. Hum Brain Mapp 39:4593-4610|
|Harbison, Anna Lonyai; Votava-Smith, Jodie K; Del Castillo, Sylvia et al. (2017) Clinical Factors Associated with Cerebral Metabolism in Term Neonates with Congenital Heart Disease. J Pediatr 183:67-73.e1|
|Paquette, N; Shi, J; Wang, Y et al. (2017) Ventricular shape and relative position abnormalities in preterm neonates. Neuroimage Clin 15:483-493|
|Manchester, Leah C; Lee, Vince; Schmithorst, Vincent et al. (2016) Global and Regional Derangements of Cerebral Blood Flow and Diffusion Magnetic Resonance Imaging after Pediatric Cardiac Arrest. J Pediatr 169:28-35.e1|
|Lao, Yi; Wang, Yalin; Shi, Jie et al. (2016) Thalamic alterations in preterm neonates and their relation to ventral striatum disturbances revealed by a combined shape and pose analysis. Brain Struct Funct 221:487-506|
|Panigrahy, Ashok; Lee, Vincent; Ceschin, Rafael et al. (2016) Brain Dysplasia Associated with Ciliary Dysfunction in Infants with Congenital Heart Disease. J Pediatr 178:141-148.e1|
|Wisnowski, Jessica L; Ceschin, Rafael C; Choi, So Young et al. (2015) Reduced thalamic volume in preterm infants is associated with abnormal white matter metabolism independent of injury. Neuroradiology 57:515-25|
|Ceschin, Rafael; Wisnowski, Jessica L; Paquette, Lisa B et al. (2015) Developmental synergy between thalamic structure and interhemispheric connectivity in the visual system of preterm infants. Neuroimage Clin 8:462-72|
|Tocchio, Shannon; Kline-Fath, Beth; Kanal, Emanuel et al. (2015) MRI evaluation and safety in the developing brain. Semin Perinatol 39:73-104|
|Panigrahy, Ashok; Schmithorst, Vincent J; Wisnowski, Jessica L et al. (2015) Relationship of white matter network topology and cognitive outcome in adolescents with d-transposition of the great arteries. Neuroimage Clin 7:438-48|
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