Abstract

Hypoxic ischemic (HI) insult damages premature white matter and grey matter in infants and causes significant mortality and morbidity. To investigate the pathological mechanisms of neonatal HI injury and find satisfactory treatments, animal models of neonatal hypoxic ischemic injury have been established and widely used. In this project, novel in vivo magnetic resonance imaging and computational techniques will be used to examine the spatiotemporal evolution of HI injury in a neonatal mouse model. Longitudinal multi-contrast MRI data will be collected and analyzed with co-registered end-point histological data in a common framework based on our MR based atlas of the developing mouse brain.
In aim 1, we will examine grey and white matter injury using in vivo MRI/histology combined analysis.
In aim 2, we will examine neurodegeneration in the cortex, hippocampus, and cerebellum using oscillating gradient diffusion MRI and histology.
In aim3, we will integrate the longitudinal multi-contrast MRI data with histological data in the central framework to characterize the spatiotemporal progression of neonatal HI injury and its regional specificity. We will then use the tools developed here to characterize HI injury in mice lacking functional Fas death receptor. We will also examine the neuroprotective effects of necrostatin in this model. We expect the project to provide detailed maps of temporal course of injury and regional susceptibility, extend our knowledge on the relationships between pathology and diagnostic markers in the mouse model, and shed light on the mechanisms of HI injury and potential treatments. This information and techniques developed in this project will be useful to design effective strategies for intervention and to monitor treatment response in studies using this or similar models.

Public Health Relevance

Neonatal hypoxic ischemic (HI) injury causes significant mortality and morbidity. To find satisfactory treatment, we will examine the complex spatiotemporal patterns of neonatal HI injury in a well-established mouse model using in vivo longitudinal multi-contrast magnetic resonance imaging data and histology.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Project (R01)
Project #
5R01HD074593-02
Application #
8702210
Study Section
Developmental Brain Disorders Study Section (DBD)
Program Officer
Krotoski, Danuta
Project Start
2013-07-16
Project End
2018-04-30
Budget Start
2014-05-01
Budget End
2015-04-30
Support Year
2
Fiscal Year
2014
Total Cost
Indirect Cost

  Institution

Name
Johns Hopkins University
Department
Radiation-Diagnostic/Oncology
Type
Schools of Medicine
DUNS #
City
Baltimore
State
MD
Country
United States
Zip Code
21218

  Publications

Graham, Ernest M; Everett, Allen D; Delpech, Jean-Christophe et al. (2018) Blood biomarkers for evaluation of perinatal encephalopathy: state of the art. Curr Opin Pediatr 30:199-203
Wu, Dan; Lei, Jun; Jia, Bei et al. (2018) In vivo assessment of the placental anatomy and perfusion in a mouse model of intrauterine inflammation. J Magn Reson Imaging 47:1260-1267
Wu, Dan; Li, Qiang; Northington, Frances J et al. (2018) Oscillating gradient diffusion kurtosis imaging of normal and injured mouse brains. NMR Biomed 31:e3917
Salas, Jacqueline; Reddy, Nihaal; Orru, Emanuele et al. (2018) The Role of Diffusion Tensor Imaging in Detecting Hippocampal Injury Following Neonatal Hypoxic-Ischemic Encephalopathy. J Neuroimaging :
Carrasco, Melisa; Perin, Jamie; Jennings, Jacky M et al. (2018) Cerebral Autoregulation and Conventional and Diffusion Tensor Imaging Magnetic Resonance Imaging in Neonatal Hypoxic-Ischemic Encephalopathy. Pediatr Neurol 82:36-43
Lemmon, Monica E; Wagner, Matthias W; Bosemani, Thangamadhan et al. (2017) Diffusion Tensor Imaging Detects Occult Cerebellar Injury in Severe Neonatal Hypoxic-Ischemic Encephalopathy. Dev Neurosci 39:207-214
Yang, Jie; Li, Qian; Wang, Zhongyu et al. (2017) Multimodality MRI assessment of grey and white matter injury and blood-brain barrier disruption after intracerebral haemorrhage in mice. Sci Rep 7:40358
Li, Qiang; Li, Gang; Wu, Dan et al. (2017) Resting-state functional MRI reveals altered brain connectivity and its correlation with motor dysfunction in a mouse model of Huntington's disease. Sci Rep 7:16742
Lee, J K; Perin, J; Parkinson, C et al. (2017) Relationships between cerebral autoregulation and markers of kidney and liver injury in neonatal encephalopathy and therapeutic hypothermia. J Perinatol 37:938-942
Wu, Dan; Zhang, Jiangyang (2017) The Effect of Microcirculatory Flow on Oscillating Gradient Diffusion MRI and Diffusion Encoding with Dual-Frequency Orthogonal Gradients (DEFOG). Magn Reson Med 77:1583-1592

Showing the most recent 10 out of 36 publications