Recent major discoveries in the genetics of frontotemporal lobar degeneration (FTLD) have accelerated the understanding of the pathogenetic mechanisms underlying FTLD and related disorders. These include the discovery of mutations in progranulin (GRN) as an important cause of FTLD and the finding of TAR DNA binding protein 43 (TDP43/TARDBP) as a major component of the intraneuronal inclusions in FTLD. Over the past years, the Genetics Core has 1) screened a significant number of PPG patients for mutations in known genes causing dementia (including MAPT), identifying known and novel mutations and a novel risk factor for neurodegeneration;2) characterized the genotype for most of the known risk factors for dementia, including APOE and MAPT haplotypes;and 3) started a productive collaboration with the laboratory of Rosa Rademakers at Mayo Clinic Jacksonville, a leading group in the study of FTD genetics. We will continue to collect DNA and RNA from peripheral blood from patients and controls with FTD-spectrum disorders evaluated through the PPG, and to screen select cases for mutation in all the dementia-causing genes. Indepth analysis of peripheral progranulin level will be performed in collaboration with the Rademakers lab.Cell lines will be created and stored in the NIH-funded AD National Cell Repository. We will also assess a panel of common polymorphisms in several genes that have been reported to modulate the dementia risk, memory performance, or social behavior, RNA from peripheral blood will be collected and used for gene expression studies. Finally, we propose to identify new loci associated with FTD and AD using novel mapping methods. These genetic data will be integrated with clinical, pathological and imaging data to achieve the core aims of the PPG projects, which are advancing our understanding of the diagnosis, characterization, and genetic architecture of neurodegenerative dementia and, in conjunction with the other sections of the current Program Project, building an extremely well characterized series of patients with neurodegenerative dementia and controls, a potentially invaluable resource for the field.
This core will accelerate research into the genetics of FTLD by identifying known and novel mutations in patients with dementia, characterizing in depth progranulin mutation carriers, and possibly identifying novel causative genes and risk factors. Extensively phenotyped and followed longitudinally, the PPG patient cohort is one of the best characterized dementia patient series in the world, and storing DNA samples in a central repository will provide an invaluable resource for the field.
|Sturm, Virginia E; Yokoyama, Jennifer S; Eckart, Janet A et al. (2015) Damage to left frontal regulatory circuits produces greater positive emotional reactivity in frontotemporal dementia. Cortex 64:55-67|
|Wagshal, Dana; Sankaranarayanan, Sethu; Guss, Valerie et al. (2015) Divergent CSF ? alterations in two common tauopathies: Alzheimer's disease and progressive supranuclear palsy. J Neurol Neurosurg Psychiatry 86:244-50|
|Bloch, Lian; Haase, Claudia M; Levenson, Robert W (2014) Emotion regulation predicts marital satisfaction: more than a wives' tale. Emotion 14:130-44|
|Possin, Katherine L; LaMarre, Amanda K; Wood, Kristie A et al. (2014) Ecological validity and neuroanatomical correlates of the NIH EXAMINER executive composite score. J Int Neuropsychol Soc 20:20-8|
|Ranasinghe, Kamalini G; Hinkley, Leighton B; Beagle, Alexander J et al. (2014) Regional functional connectivity predicts distinct cognitive impairments in Alzheimer's disease spectrum. Neuroimage Clin 5:385-95|
|Sanders, David W; Kaufman, Sarah K; DeVos, Sarah L et al. (2014) Distinct tau prion strains propagate in cells and mice and define different tauopathies. Neuron 82:1271-88|
|Lehmann, Manja; Ghosh, Pia M; Madison, Cindee et al. (2014) Greater medial temporal hypometabolism and lower cortical amyloid burden in ApoE4-positive AD patients. J Neurol Neurosurg Psychiatry 85:266-73|
|Sanchez-Juan, Pascual; Ghosh, Pia M; Hagen, Jayne et al. (2014) Practical utility of amyloid and FDG-PET in an academic dementia center. Neurology 82:230-8|
|Henry, Maya L; Wilson, Stephen M; Ogar, Jennifer M et al. (2014) Neuropsychological, behavioral, and anatomical evolution in right temporal variant frontotemporal dementia: a longitudinal and post-mortem single case analysis. Neurocase 20:100-9|
|Lee, Suzee E; Khazenzon, Anna M; Trujillo, Andrew J et al. (2014) Altered network connectivity in frontotemporal dementia with C9orf72 hexanucleotide repeat expansion. Brain 137:3047-60|
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