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Abstract #3076

Magnetic Susceptibility Alterations in Mouse Brains with Prenatal Alcohol Exposure: A Preliminary Study

Wei Cao1, Wei Li1, Shonagh K. OLeary-Moore2, Kathleen K. Sulik2, G. Allan Johnson3, Chunlei Liu1, 4

1Brain Imaging and Analysis Center, Duke University, Durham, NC, United States; 2Bowles Center for Alcohol Studies,University of North Carolina, Chapel Hill, NC, United States; 3Center for In Vivo Microscopy, Duke University, Durham, NC, United States; 4Department of Radiology, Duke University, Durham, NC, United States

The primary effects of prenatal alcohol exposure are on the brain development and the cognitive and behavioral deficits that ensue. Magnetic susceptibility imaging was used to assess its impact to mouse brains. Two groups of mice (n=3, postnatal day 80) were characterized: an ethanol group and a control group. Two main white matter fiber bundles, anterior commissure and corpus callosum, were analyzed. The orientation dependence of magnetic susceptibility was found significantly decreased in ethanol exposed brains compared to their age-matched controls in both regions. This may be interpreted as a loss of myelination due to prenatal alcohol exposure.

Keywords

abnormal abnormalities absolute acute affected alcohol alterations altered anisotropy anterior anyone apart audience behavioral biological blood brain brains bundles cause caused characterized chemical cognitive consumption contents control corpus daily dams decrease decreased decreases defects deficits denotes dependence detrimental development diagnoses diffusion disorder disproportionate distribution doses duke encompasses ensue ensure entailed ethanol example excellent exposed exposure extensive fetal fiber fibers field fitting fractional fundamentally genetically gestational gradient gray hours humans impact impaired in vivo injections intake integrity interpreted iron isotropic least linearly macromolecules maps matched matrix mice micron microscopy mimicking models monotonously mouse north orientation overlaid particular permanent physiologically plotting postnatal pregnant preliminary prenatal profound proportional radiology recalled recent reduced reduction reflects related relationship replaced reported resolution respect respectively saline scanned segmented selected sensitivity sheath significantly sine spatial spectrum spoiled square squared statistical structural structure structures studies studio sufficient suggested susceptibility target tensor term treatment true twice umbrella variation variations various volumes vulnerable white