The proposed interdisciplinary study allows the candidate to further develop his knowledge of MR physics and expertise in imaging studies of adrenomyeloneuropathy (AMN), a form of adrenoleukodystrophy (ALD), while providing rigorous exposure to the clinical and biological side of this research. The goal is to increase the candidate's expertise in multiple areas necessary to his proposed research project and future career development. These areas include genetics of peroxisomal disorders, lipid metabolism, and spatial aspects of nuclear magnetic resonance spectroscopy. The proposal builds nicely on the candidate's prior experience with Dr. Moser at Johns Hopkins and extends his studies to the animal model. The candidate is in a world-renown environment for both MR imaging and neuroscience. This Award will provide the guidance and tools necessary for him to become a successful, independent researcher. The 5 year research training program consists of 1) coursework and mentoring relationships on the science of high-field magnetic resonance that the candidate is currently lacking, 2) a 2 year rigorous training in animal imaging, and 3) collaborative translational studies with experts in the field of lipid metabolism and peroxisomal disorders. The research portion of this application will allow him to examine the histopathological and biochemical correlate of advanced MR techniques in the mouse model of ALD. This has never been done before and likely to reveal insight into the fundamental dynamics of demyelination. Further, the proposal encompasses application of novel therapeutics to normalize lipid metabolism and stabilize myelin membrane integrity. Hypotheses include: 1) in the animal model of ALD, measures of diffusion tensor imaging can assess the density of white matter tracts in the mouse and measures of single voxel proton MR spectroscopy reflect changes in lipid composition of the brain, and 2) in ALD patients, metabolic changes seen on proton MR spectroscopic imaging herald lesion development on conventional MRI. Our results will yield a noninvasive means of gauging the effects of experimental and therapeutic manipulations of lipid chemistry upon specific neuroanatomic structures. Ultimately, insights gained in these studies of ALD/AMN may prove beneficial to other neurodegenerative diseases, such as amyotrophic lateral sclerosis or Parkinson's and Alzheimer's diseases. ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Clinical Investigator Award (CIA) (K08)
Project #
5K08NS052550-02
Application #
7234078
Study Section
NST-2 Subcommittee (NST)
Program Officer
Tagle, Danilo A
Project Start
2006-06-01
Project End
2011-05-31
Budget Start
2007-06-01
Budget End
2008-05-31
Support Year
2
Fiscal Year
2007
Total Cost
$175,635
Indirect Cost
Name
Massachusetts General Hospital
Department
Type
DUNS #
073130411
City
Boston
State
MA
Country
United States
Zip Code
02199
Gong, Yi; Sasidharan, Nikhil; Laheji, Fiza et al. (2017) Microglial dysfunction as a key pathological change in adrenomyeloneuropathy. Ann Neurol 82:813-827
Gong, Yi; Mu, Dakai; Prabhakar, Shilpa et al. (2015) Adenoassociated virus serotype 9-mediated gene therapy for x-linked adrenoleukodystrophy. Mol Ther 23:824-834
Thibert, Ronald; Hyland, Keith; Chiles, Joe et al. (2012) Levodopa response reveals sepiapterin reductase deficiency in a female heterozygote with adrenoleukodystrophy. JIMD Rep 3:79-82
Musolino, Patricia Leonor; Rapalino, Otto; Caruso, Paul et al. (2012) Hypoperfusion predicts lesion progression in cerebral X-linked adrenoleukodystrophy. Brain 135:2676-83
Bley, Annette E; Giannikopoulos, Ourania A; Hayden, Doug et al. (2011) Natural history of infantile G(M2) gangliosidosis. Pediatrics 128:e1233-41
Garofalo, Kevin; Penno, Anke; Schmidt, Brian P et al. (2011) Oral L-serine supplementation reduces production of neurotoxic deoxysphingolipids in mice and humans with hereditary sensory autonomic neuropathy type 1. J Clin Invest 121:4735-45
Penno, Anke; Reilly, Mary M; Houlden, Henry et al. (2010) Hereditary sensory neuropathy type 1 is caused by the accumulation of two neurotoxic sphingolipids. J Biol Chem 285:11178-87
Mahmood, Asif; Berry, Jay; Wenger, David A et al. (2010) Metachromatic leukodystrophy: a case of triplets with the late infantile variant and a systematic review of the literature. J Child Neurol 25:572-80
Eichler, F; Grodd, W; Grant, E et al. (2009) Metachromatic leukodystrophy: a scoring system for brain MR imaging observations. AJNR Am J Neuroradiol 30:1893-7
Eichler, Florian S; Hornemann, Thorsten; McCampbell, Alex et al. (2009) Overexpression of the wild-type SPT1 subunit lowers desoxysphingolipid levels and rescues the phenotype of HSAN1. J Neurosci 29:14646-51

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