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Showing 1 to 12 of 12 entries
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Discovery and Replication of Gene Influences on Brain Structure Using LASSO Regression.

Frontiers in neuroscience

Kohannim O, Hibar DP, Stein JL, Jahanshad N, Hua X, Rajagopalan P, Toga AW, Jack CR, Weiner MW, de Zubicaray GI, McMahon KL, Hansell NK, Martin NG, Wright MJ, Thompson PM.
PMID: 22888310
Front Neurosci. 2012 Aug 06;6:115. doi: 10.3389/fnins.2012.00115. eCollection 2012.

We implemented least absolute shrinkage and selection operator (LASSO) regression to evaluate gene effects in genome-wide association studies (GWAS) of brain images, using an MRI-derived temporal lobe volume measure from 729 subjects scanned as part of the Alzheimer's Disease...

TRACTOGRAPHY DENSITY AND NETWORK MEASURES IN ALZHEIMER'S DISEASE.

Proceedings. IEEE International Symposium on Biomedical Imaging

Prasad G, Nir TM, Toga AW, Thompson PM.
PMID: 25404994
Proc IEEE Int Symp Biomed Imaging. 2013 Apr;2013:692-695. doi: 10.1109/ISBI.2013.6556569.

Brain connectivity declines in Alzheimer's disease (AD), both functionally and structurally. Connectivity maps and networks derived from diffusion-based tractography offer new ways to track disease progression and to understand how AD affects the brain. Here we set out to...

Rich club network analysis shows distinct patterns of disruption in frontotemporal dementia and Alzheimer's disease.

Mathematics and visualization

Daianu M, Jahanshad N, Villalon-Reina JE, Mendez MF, Bartzokis G, Jimenez EE, Joshi A, Barsuglia J, Thompson PM.
PMID: 26161050
Math Vis. 2014;2014:13-22. doi: 10.1007/978-3-319-11182-7_2.

Diffusion imaging and brain connectivity analyses can reveal the underlying organizational patterns of the human brain, described as complex networks of densely interlinked regions. Here, we analyzed 1.5-Tesla whole-brain diffusion-weighted images from 64 participants - 15 patients with behavioral...

The C677T variant in .

Biological psychiatry. Cognitive neuroscience and neuroimaging

Roussotte FF, Hua X, Narr KL, Small GW, Thompson PM.
PMID: 28435933
Biol Psychiatry Cogn Neurosci Neuroimaging. 2017 Apr;2(3):280-288. doi: 10.1016/j.bpsc.2016.09.005.

INTRODUCTION: The C677T functional variant in the methylene-tetrahydrofolate reductase (METHODS AND MATERIALS: Here, 3D magnetic resonance imaging data was analyzed from 738 individuals (age: 75.5 ± 6.8 years; 438 men/300 women) including 173 Alzheimer's patients, 359 subjects with mild...

A Novel Protocol for Directed Differentiation of C9orf72-Associated Human Induced Pluripotent Stem Cells Into Contractile Skeletal Myotubes.

Stem cells translational medicine

Swartz EW, Baek J, Pribadi M, Wojta KJ, Almeida S, Karydas A, Gao FB, Miller BL, Coppola G.
PMID: 27369896
Stem Cells Transl Med. 2016 Nov;5(11):1461-1472. doi: 10.5966/sctm.2015-0340. Epub 2016 Jul 01.

: Induced pluripotent stem cells (iPSCs) offer an unlimited resource of cells to be used for the study of underlying molecular biology of disease, therapeutic drug screening, and transplant-based regenerative medicine. However, methods for the directed differentiation of skeletal...

FLOW-BASED NETWORK MEASURES OF BRAIN CONNECTIVITY IN ALZHEIMER'S DISEASE.

Proceedings. IEEE International Symposium on Biomedical Imaging

Prasad G, Joshi SH, Nir TM, Toga AW, Thompson PM.
PMID: 25067993
Proc IEEE Int Symp Biomed Imaging. 2013;2013:258-261. doi: 10.1109/ISBI.2013.6556461.

We present a new flow-based method for modeling brain structural connectivity. The method uses a modified maximum-flow algorithm that is robust to noise in the diffusion data and guided by biologically viable pathways and structure of the brain. A...

Comparison of nine tractography algorithms for detecting abnormal structural brain networks in Alzheimer's disease.

Frontiers in aging neuroscience

Zhan L, Zhou J, Wang Y, Jin Y, Jahanshad N, Prasad G, Nir TM, Leonardo CD, Ye J, Thompson PM, For The Alzheimer's Disease Neuroimaging Initiative.
PMID: 25926791
Front Aging Neurosci. 2015 Apr 14;7:48. doi: 10.3389/fnagi.2015.00048. eCollection 2015.

Alzheimer's disease (AD) involves a gradual breakdown of brain connectivity, and network analyses offer a promising new approach to track and understand disease progression. Even so, our ability to detect degenerative changes in brain networks depends on the methods...

OPTIMIZING BRAIN CONNECTIVITY NETWORKS FOR DISEASE CLASSIFICATION USING EPIC.

Proceedings. IEEE International Symposium on Biomedical Imaging

Prasad G, Joshi SH, Thompson PM.
PMID: 25405000
Proc IEEE Int Symp Biomed Imaging. 2014 May;2014:834-837. doi: 10.1109/ISBI.2014.6868000.

We propose a method to adaptively select an optimal cortical segmentation for brain connectivity analysis that maximizes feature-based disease classification performance. In standard structural connectivity analysis, the cortex is typically subdivided (parcellated) into

A single nucleotide polymorphism associated with reduced alcohol intake in the RASGRF2 gene predicts larger cortical volumes but faster longitudinal ventricular expansion in the elderly.

Frontiers in aging neuroscience

Roussotte FF, Gutman BA, Hibar DP, Jahanshad N, Madsen SK, Jack CR, Weiner MW, Thompson PM.
PMID: 24409144
Front Aging Neurosci. 2013 Dec 19;5:93. doi: 10.3389/fnagi.2013.00093. eCollection 2013.

A recent genome-wide association meta-analysis showed a suggestive association between alcohol intake in humans and a common single nucleotide polymorphism in the ras-specific guanine nucleotide releasing factor 2 gene. Here, we tested whether this variant - associated with lower...

Boosting brain connectome classification accuracy in Alzheimer's disease using higher-order singular value decomposition.

Frontiers in neuroscience

Zhan L, Liu Y, Wang Y, Zhou J, Jahanshad N, Ye J, Thompson PM.
PMID: 26257601
Front Neurosci. 2015 Jul 24;9:257. doi: 10.3389/fnins.2015.00257. eCollection 2015.

Alzheimer's disease (AD) is a progressive brain disease. Accurate detection of AD and its prodromal stage, mild cognitive impairment (MCI), are crucial. There is also a growing interest in identifying brain imaging biomarkers that help to automatically differentiate stages...

Algebraic connectivity of brain networks shows patterns of segregation leading to reduced network robustness in Alzheimer's disease.

Computational diffusion MRI : MICCAI Workshop, Boston, MA, USA, September 2014. CDMRI (Workshop) (6th : 2014 : Boston, Mass.)

Daianu M, Jahanshad N, Nir TM, Leonardo CD, Jack CR, Weiner MW, Bernstein MA, Thompson PM.
PMID: 26640830
Comput Diffus MRI (2014). 2014;2014:55-64. doi: 10.1007/978-3-319-11182-7_6. Epub 2014 Dec 12.

Measures of network topology and connectivity aid the understanding of network breakdown as the brain degenerates in Alzheimer's disease (AD). We analyzed 3-Tesla diffusion-weighted images from 202 patients scanned by the Alzheimer's Disease Neuroimaging Initiative - 50 healthy controls,...

Cortical thickness and semantic fluency in Alzheimer's disease and mild cognitive impairment.

American journal of Alzheimer's disease (Columbia, Mo.)

Eastman JA, Hwang KS, Lazaris A, Chow N, Ramirez L, Babakchanian S, Woo E, Thompson PM, Apostolova LG.
PMID: 25346870
Am J Alzheimers Dis (Columbia). 2013;1(2):81-92. doi: 10.7726/ajad.2013.1006.

The hallmark of Alzheimer's disease (AD) is declarative memory loss, but deficits in semantic fluency are also observed. We assessed how semantic fluency relates to cortical atrophy to identify specific regions that play a role in the loss of...

Showing 1 to 12 of 12 entries