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Your search keyword '"Dufouil C"' showing total 5 results
Start Over Author "Dufouil C" Publisher escholarship, university of california
5 results on '"Dufouil C"'

1. A novel Alzheimer disease locus located near the gene encoding tau protein.

Author

Jun, G, Ibrahim-Verbaas, CA, Vronskaya, M, Lambert, J-C, Chung, J, Naj, AC, Kunkle, BW, Wang, L-S, Bis, JC, Bellenguez, C, Harold, D, Lunetta, KL, Destefano, AL, Grenier-Boley, B, Sims, R, Beecham, GW, Smith, AV, Chouraki, V, Hamilton-Nelson, KL, Ikram, MA, Fievet, N, Denning, N, Martin, ER, Schmidt, H, Kamatani, Y, Dunstan, ML, Valladares, O, Laza, AR, Zelenika, D, Ramirez, A, Foroud, TM, Choi, S-H, Boland, A, Becker, T, Kukull, WA, van der Lee, SJ, Pasquier, F, Cruchaga, C, Beekly, D, Fitzpatrick, AL, Hanon, O, Gill, M, Barber, R, Gudnason, V, Campion, D, Love, S, Bennett, DA, Amin, N, Berr, C, Tsolaki, Magda, Buxbaum, JD, Lopez, OL, Deramecourt, V, Fox, NC, Cantwell, LB, Tárraga, L, Dufouil, C, Hardy, J, Crane, PK, Eiriksdottir, G, Hannequin, D, Clarke, R, Evans, D, Mosley, TH, Letenneur, L, Brayne, C, Maier, W, De Jager, P, Emilsson, V, Dartigues, J-F, Hampel, H, Kamboh, MI, de Bruijn, RFAG, Tzourio, C, Pastor, P, Larson, EB, Rotter, JI, O'Donovan, MC, Montine, TJ, Nalls, MA, Mead, S, Reiman, EM, Jonsson, PV, Holmes, C, St George-Hyslop, PH, Boada, M, Passmore, P, Wendland, JR, Schmidt, R, Morgan, K, Winslow, AR, Powell, JF, Carasquillo, M, Younkin, SG, Jakobsdóttir, J, Kauwe, JSK, Wilhelmsen, KC, Rujescu, D, Nöthen, MM, and Hofman, A

Subjects
IGAP Consortium, Chromosomes, Human, Pair 17, Humans, Alzheimer Disease, tau Proteins, Polymorphism, Single Nucleotide, Apolipoprotein E4, Genome-Wide Association Study, Alzheimer's Disease, Prevention, Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD), Dementia, Human Genome, Neurodegenerative, Neurosciences, Acquired Cognitive Impairment, Genetics, Brain Disorders, Aging, 2.1 Biological and endogenous factors, Neurological, Psychiatry, Biological Sciences, Medical and Health Sciences, Psychology and Cognitive Sciences
Abstract

APOE ɛ4, the most significant genetic risk factor for Alzheimer disease (AD), may mask effects of other loci. We re-analyzed genome-wide association study (GWAS) data from the International Genomics of Alzheimer's Project (IGAP) Consortium in APOE ɛ4+ (10 352 cases and 9207 controls) and APOE ɛ4- (7184 cases and 26 968 controls) subgroups as well as in the total sample testing for interaction between a single-nucleotide polymorphism (SNP) and APOE ɛ4 status. Suggestive associations (P

Published
2016

2. Genetic contributions to variation in general cognitive function: a meta-analysis of genome-wide association studies in the CHARGE consortium (N=53949).

Author

Davies, G, Armstrong, N, Bis, JC, Bressler, J, Chouraki, V, Giddaluru, S, Hofer, E, Ibrahim-Verbaas, CA, Kirin, M, Lahti, J, van der Lee, SJ, Le Hellard, S, Liu, T, Marioni, RE, Oldmeadow, C, Postmus, I, Smith, AV, Smith, JA, Thalamuthu, A, Thomson, R, Vitart, V, Wang, J, Yu, L, Zgaga, L, Zhao, W, Boxall, R, Harris, SE, Hill, WD, Liewald, DC, Luciano, M, Adams, H, Ames, D, Amin, N, Amouyel, P, Assareh, AA, Au, R, Becker, JT, Beiser, A, Berr, C, Bertram, L, Boerwinkle, E, Buckley, BM, Campbell, H, Corley, J, De Jager, PL, Dufouil, C, Eriksson, JG, Espeseth, T, Faul, JD, Ford, I, Generation Scotland, Gottesman, RF, Griswold, ME, Gudnason, V, Harris, TB, Heiss, G, Hofman, A, Holliday, EG, Huffman, J, Kardia, SLR, Kochan, N, Knopman, DS, Kwok, JB, Lambert, J-C, Lee, T, Li, G, Li, S-C, Loitfelder, M, Lopez, OL, Lundervold, AJ, Lundqvist, A, Mather, KA, Mirza, SS, Nyberg, L, Oostra, BA, Palotie, A, Papenberg, G, Pattie, A, Petrovic, K, Polasek, O, Psaty, BM, Redmond, P, Reppermund, S, Rotter, JI, Schmidt, H, Schuur, M, Schofield, PW, Scott, RJ, Steen, VM, Stott, DJ, van Swieten, JC, Taylor, KD, Trollor, J, Trompet, S, Uitterlinden, AG, Weinstein, G, Widen, E, Windham, BG, Jukema, JW, and Wright, AF

Subjects
Generation Scotland, Humans, Genetic Predisposition to Disease, HMGN1 Protein, Cohort Studies, Cognition, Cognition Disorders, Neuropsychological Tests, Phenotype, Polymorphism, Single Nucleotide, Aged, Aged, 80 and over, Middle Aged, Scotland, Female, Male, Atherosclerosis, Genome-Wide Association Study, and over, Polymorphism, Single Nucleotide, Psychiatry, Biological Sciences, Medical and Health Sciences, Psychology and Cognitive Sciences
Abstract

General cognitive function is substantially heritable across the human life course from adolescence to old age. We investigated the genetic contribution to variation in this important, health- and well-being-related trait in middle-aged and older adults. We conducted a meta-analysis of genome-wide association studies of 31 cohorts (N=53,949) in which the participants had undertaken multiple, diverse cognitive tests. A general cognitive function phenotype was tested for, and created in each cohort by principal component analysis. We report 13 genome-wide significant single-nucleotide polymorphism (SNP) associations in three genomic regions, 6q16.1, 14q12 and 19q13.32 (best SNP and closest gene, respectively: rs10457441, P=3.93 × 10(-9), MIR2113; rs17522122, P=2.55 × 10(-8), AKAP6; rs10119, P=5.67 × 10(-9), APOE/TOMM40). We report one gene-based significant association with the HMGN1 gene located on chromosome 21 (P=1 × 10(-6)). These genes have previously been associated with neuropsychiatric phenotypes. Meta-analysis results are consistent with a polygenic model of inheritance. To estimate SNP-based heritability, the genome-wide complex trait analysis procedure was applied to two large cohorts, the Atherosclerosis Risk in Communities Study (N=6617) and the Health and Retirement Study (N=5976). The proportion of phenotypic variation accounted for by all genotyped common SNPs was 29% (s.e.=5%) and 28% (s.e.=7%), respectively. Using polygenic prediction analysis, ~1.2% of the variance in general cognitive function was predicted in the Generation Scotland cohort (N=5487; P=1.5 × 10(-17)). In hypothesis-driven tests, there was significant association between general cognitive function and four genes previously associated with Alzheimer's disease: TOMM40, APOE, ABCG1 and MEF2C.

Published
2015

3. Guidelines for reporting methodological challenges and evaluating potential bias in dementia research

Author

Glymour, Medellena, Weuve, J, Proust-Lima, C, Power, MC, Gross, AL, Hofer, SM, Thiébaut, R, Chêne, G, Glymour, MM, and Dufouil, C

Abstract

© 2015 The Authors.Clinical and population research on dementia and related neurologic conditions, including Alzheimer's disease, faces several unique methodological challenges. Progress to identify preventive and therapeutic strategies rests on valid and

Published
2015

4. MAPT STUDY: A MULTIDOMAIN APPROACH FOR PREVENTING ALZHEIMER'S DISEASE: DESIGN AND BASELINE DATA.

Author

Vellas, B, Carrie, I, Gillette-Guyonnet, S, Touchon, J, Dantoine, T, Dartigues, JF, Cuffi, MN, Bordes, S, Gasnier, Y, Robert, P, Bories, L, Rouaud, O, Desclaux, F, Sudres, K, Bonnefoy, M, Pesce, A, Dufouil, C, Lehericy, S, Chupin, M, Mangin, JF, Payoux, P, Adel, D, Legrand, P, Catheline, D, Kanony, C, Zaim, M, Molinier, L, Costa, N, Delrieu, J, Voisin, T, Faisant, C, Lala, F, Nourhashémi, F, Rolland, Y, Van Kan, G Abellan, Dupuy, C, Cantet, C, Cestac, P, Belleville, S, Willis, S, Cesari, M, Weiner, MW, Soto, ME, Ousset, PJ, and Andrieu, S

Subjects
Biomedical and Clinical Sciences, Clinical Sciences, Alzheimer's Disease, Clinical Research, Neurodegenerative, Brain Disorders, Clinical Trials and Supportive Activities, Aging, Prevention, Behavioral and Social Science, Neurosciences, Nutrition, Acquired Cognitive Impairment, Dementia, Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD), Complementary and Integrative Health, Neurological, Alzheimer’s disease, Multidomain intervention, Omega-3 fatty acids, Biological psychology, Cognitive and computational psychology
Abstract

ObjectiveThe Multidomain Alzheimer Preventive Trial (MAPT study) was designed to assess the efficacy of isolated supplementation with omega-3 fatty acid, an isolated multidomain intervention (consisting of nutritional counseling, physical exercise, cognitive stimulation) or a combination of the two interventions on the change of cognitive functions in frail subjects aged 70 years and older for a period of 3 years. Ancillary neuroimaging studies were additionally implemented to evaluate the impact of interventions on cerebral metabolism (FDG PET scans) and atrophy rate (MRIs), as well as brain amyloïd deposit (AV45 PET scans).Design patients1680 subjects (mean age: 75.3 years; female: 64.8 %), enrolled by 13 memory clinics, were randomized into one of the following four groups: omega-3 supplementation alone, multidomain intervention alone, omega-3 plus multidomain intervention, or placebo. Participants underwent cognitive, functional and biological assessments at M6, M12, M24 and M36 visits. The primary endpoint is a change of memory function at 3 years, as assessed by the Free and Cued Selective Reminding test. All participants will be followed for 2 additional years after the 3-years intervention (MAPT PLUS extension study).Interventions1/Omega-3 supplementation: two soft capsules daily as a single dose, containing a total of 400 mg docosahexaenoic acid (DHA), i.e., 800 mg docosahexaenoic acid per day, for 3 years. 2/ Multidomain intervention: collective training sessions conducted in small groups (6-8 participants) in twelve 120-minute sessions over the first 2 months (two sessions a week for the first month, and one session a week the second month) then a 60-minute session per month in the following three areas: nutrition, physical activity, and cognition until the end of the 3 years. In addition to the collective sessions, individualized preventive outpatient visits exploring possible risk factors for cognitive decline are performed at baseline, M12 and M24.Baseline populationFor cognition, the mean MMSE at baseline was 28.1 (± 1.6). About 58% and 42% of participants had a CDR score equal to 0 and 0.5, respectively. Regarding mobility status, 200 (11.9%) had a 4-m gait speed lower or equal to 0.8 m/s. According to the Fried criteria, 673 (42.1%) participants were considered pre frail, and 51 (3.2%) frail. The red blood cell DHA content was 26.1 ± 8.1 µg/g. Five hundred and three participants underwent baseline MRI. AV45 PET scans were performed in 271 individuals and preliminary results showed that 38.0% had a cortical SUVR > 1.17, which gave an indication of significant brain amyloïd deposit. DISCUSSION: The MAPT trial is presently the first largest and longest multidomain preventive trial relevant to cognitive decline in older adults with subjective memory complaints. The multidomain intervention designed for the MAPT trial is likely to be easily implemented within the general population.

Published
2014

5. Multiethnic Genome-Wide Association Study of Cerebral White Matter Hyperintensities on MRI

Author

Verhaaren, BFJ, Debette, S, Bis, JC, Smith, JA, Ikram, MK, Adams, HH, Beecham, AH, Rajan, KB, Lopez, LM, Barral, S, Van Buchem, MA, Van Der Grond, J, Smith, AV, Hegenscheid, K, Aggarwal, NT, De Andrade, M, Atkinson, EJ, Beekman, M, Beiser, AS, Blanton, SH, Boerwinkle, E, Brickman, AM, Bryan, RN, Chauhan, G, Chen, CPLH, Chouraki, V, De Craen, AJM, Crivello, F, Deary, IJ, Deelen, J, De Jager, PL, Dufouil, C, Elkind, MSV, Evans, DA, Freudenberger, P, Gottesman, RF, Gunason, V, Habes, M, Heckbert, SR, Heiss, G, Hilal, S, Hofer, E, Hofman, A, Ibrahim-Verbaas, CA, Knopman, DS, Lewis, CE, Liao, J, Liewald, DCM, Luciano, M, Van Der Lugt, A, Martinez, OO, Mayeux, R, Mazoyer, B, Nalls, M, Nauck, M, Niessen, WJ, Oostra, BA, Psaty, BM, Rice, KM, Rotter, JI, Von Sarnowski, B, Schmidt, H, Schreiner, PJ, Schuur, M, Sidney, SS, Sigurdsson, S, Slagboom, PE, Stott, DJM, Van Swieten, JC, Teumer, A, Töglhofer, AM, Traylor, M, Trompet, S, Turner, ST, Tzourio, C, Uh, HW, Uitterlinden, AG, Vernooij, MW, Wang, JJ, Wong, TY, Wardlaw, JM, Windham, BG, Wittfeld, K, Wolf, C, Wright, CB, Yang, Q, Zhao, W, Zijdenbos, A, Jukema, JW, Sacco, RL, Kardia, SLR, Amouyel, P, Mosley, TH, Longstreth, WT, DeCarli, CC, Van Duijn, CM, Schmidt, R, Launer, LJ, and Grabe, HJ

Subjects
genome-wide association study, hypertension, leukoencephalopathies, polymorphisms, single nucleotide, cerebrovascular disorders, cerebral small vessel diseases
Abstract

© 2015 American Heart Association, Inc. Background-The burden of cerebral white matter hyperintensities (WMH) is associated with an increased risk of stroke, dementia, and death. WMH are highly heritable, but their genetic underpinnings are incompletely characterized. To identify novel genetic variants influencing WMH burden, we conducted a meta-analysis of multiethnic genome-wide association studies. Methods and Results-We included 21 079 middle-aged to elderly individuals from 29 population-based cohorts, who were free of dementia and stroke and were of European (n=17 936), African (n=1943), Hispanic (n=795), and Asian (n=405) descent. WMH burden was quantified on MRI either by a validated automated segmentation method or a validated visual grading scale. Genotype data in each study were imputed to the 1000 Genomes reference. Within each ethnic group, we investigated the relationship between each single-nucleotide polymorphism and WMH burden using a linear regression model adjusted for age, sex, intracranial volume, and principal components of ancestry. A meta-analysis was conducted for each ethnicity separately and for the combined sample. In the European descent samples, we confirmed a previously known locus on chr17q25 (P=2.7×10-19) and identified novel loci on chr10q24 (P=1.6×10-9) and chr2p21 (P=4.4×10-8). In the multiethnic meta-analysis, we identified 2 additional loci, on chr1q22 (P=2.0×10-8) and chr2p16 (P=1.5×10-8). The novel loci contained genes that have been implicated in Alzheimer disease (chr2p21 and chr10q24), intracerebral hemorrhage (chr1q22), neuroinflammatory diseases (chr2p21), and glioma (chr10q24 and chr2p16). Conclusions-We identified 4 novel genetic loci that implicate inflammatory and glial proliferative pathways in the development of WMH in addition to previously proposed ischemic mechanisms.

Published
2015

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