Keyword search (3,619 papers available)


Large-scale mGluR5 network abnormalities linked to epilepsy duration in focal cortical dysplasia.

Author(s): DuBois JM, Mathotaarachchi S, Rousset OG, Sziklas V, Sepulcre J, Guiot MC, Hall JA, Massarweh G, Soucy JP, Rosa-Neto P, Kobayashi E...

To determine the extent of metabotropic glutamate receptor type 5 (mGluR5) network abnormalities associated with focal cortical dysplasia (FCD), we performed graph theoretical analysis of [11C]ABP6...

Article GUID: 33401137
Recommendations of the 5th Canadian Consensus Conference on the diagnosis and treatment of dementia.

Author(s): Ismail Z, Black SE, Camicioli R, Chertkow H, Herrmann N, Laforce R, Montero-Odasso M, Rockwood K, Rosa-Neto P, Seitz D, Sivananthan S, Smith...

Alzheimers Dement. 2020 Jul 29;: Authors: Ismail Z, Black SE, Camicioli R, Chertkow H, Herrmann N, Laforce R, Montero-Odasso M, Rockwood K, Rosa-Neto P, Seitz D, Sivananthan S, Smith EE, Soucy JP,...

Article GUID: 32725777
Topographical distribution of Aβ predicts progression to dementia in Aβ positive mild cognitive impairment

Author(s): Pascoal TA, Therriault J, Mathotaarachchi S, Kang MS, Shin M, Benedet AL, Chamoun M, Tissot C, Lussier F, Mohaddes S, Soucy JP, Massarweh G,...

INTRODUCTION: Abnormal brain amyloid beta (Aβ) is typically assessed in vivo using global concentrations from cerebrospinal fluid and positron emission tomography (PET). However, it is unknown...

Article GUID: 32582834
Chronic Neuroleptic-Induced Parkinsonism Examined with Positron Emission Tomography.

Author(s): Galoppin M, Berroir P, Soucy JP, Suzuki Y, Lavigne GJ, Gagnon JF, Montplaisir JY, Stip E, Blanchet PJ

Mov Disord. 2020 Apr 30;: Authors: Galoppin M, Berroir P, Soucy JP, Suzuki Y, Lavigne GJ, Gagnon JF, Montplaisir JY, Stip E, Blanchet PJ

Article GUID: 32353194
Non-invasive in vivo hyperspectral imaging of the retina for potential biomarker use in Alzheimer's disease.

Author(s): Hadoux X, Hui F, Lim JKH, Masters CL, Pébay A, Chevalier S, Ha J, Loi S, Fowler CJ, Rowe C, Villemagne VL, Taylor EN, Fluke C, Soucy JP, Les...

Nat Commun. 2019 Sep 17;10(1):4227 Authors: Hadoux X, Hui F, Lim JKH, Masters CL, Pébay A, Chevalier S, Ha J, Loi S, Fowler CJ, Rowe C, Villemagne VL, Taylor EN, Fluke C, Soucy JP, Lesage F, ...

Article GUID: 31530809
Development of "[11C]kits" for a fast, efficient and reliable production of carbon-11 labeled radiopharmaceuticals for Positron Emission Tomography.

Author(s): Jolly D, Hopewell R, Kovacevic M, Li QY, Soucy JP, Kostikov A

Appl Radiat Isot. 2017 Mar;121:76-81 Authors: Jolly D, Hopewell R, Kovacevic M, Li QY, Soucy JP, Kostikov A

Article GUID: 28038410
Brain perfusion during rapid-eye-movement sleep successfully identifies amnestic mild cognitive impairment.

Author(s): Brayet P, Petit D, Baril AA, Gosselin N, Gagnon JF, Soucy JP, Gauthier S, Kergoat MJ, Carrier J, Rouleau I, Montplaisir J

Sleep Med. 2017 Jun;34:134-140 Authors: Brayet P, Petit D, Baril AA, Gosselin N, Gagnon JF, Soucy JP, Gauthier S, Kergoat MJ, Carrier J, Rouleau I, Montplaisir J

Article GUID: 28522082
Brain cholinergic alterations in idiopathic REM sleep behaviour disorder: a PET imaging study with 18F-FEOBV.

Author(s): Bedard MA, Aghourian M, Legault-Denis C, Postuma RB, Soucy JP, Gagnon JF, Pelletier A, Montplaisir J

Sleep Med. 2019 Jan 06;58:35-41 Authors: Bedard MA, Aghourian M, Legault-Denis C, Postuma RB, Soucy JP, Gagnon JF, Pelletier A, Montplaisir J

Article GUID: 31078078
Dopamine cross-sensitization between psychostimulant drugs and stress in healthy male volunteers.

Author(s): Booij L, Welfeld K, Leyton M, Dagher A, Boileau I, Sibon I, Baker GB, Diksic M, Soucy JP, Pruessner JC, Cawley-Fiset E, Casey KF, Benkelfat C

Transl Psychiatry. 2016 Feb 23;6:e740 Authors: Booij L, Welfeld K, Leyton M, Dagher A, Boileau I, Sibon I, Baker GB, Diksic M, Soucy JP, Pruessner JC, Cawley-Fiset E, Casey KF, Benkelfat C

Article GUID: 26905412
Metabotropic Glutamate Receptor Type 5 (mGluR5) Cortical Abnormalities in Focal Cortical Dysplasia Identified In Vivo With [11C]ABP688 Positron-Emission Tomography (PET) Imaging.

Author(s): DuBois JM, Rousset OG, Guiot MC, Hall JA, Reader AJ, Soucy JP, Rosa-Neto P, Kobayashi E

Cereb Cortex. 2016 10 17;26(11):4170-4179 Authors: DuBois JM, Rousset OG, Guiot MC, Hall JA, Reader AJ, Soucy JP, Rosa-Neto P, Kobayashi E

Article GUID: 27578494
Biomarkers, designs, and interpretations of resting-state fMRI in translational pharmacological research: A review of state-of-the-Art, challenges, and opportunities for studying brain chemistry.

Author(s): Khalili-Mahani N, Rombouts SA, van Osch MJ, Duff EP, Carbonell F, Nickerson LD, Becerra L, Dahan A, Evans AC, Soucy JP, Wise R, Zijdenbos AP...

Hum Brain Mapp. 2017 04;38(4):2276-2325 Authors: Khalili-Mahani N, Rombouts SA, van Osch MJ, Duff EP, Carbonell F, Nickerson LD, Becerra L, Dahan A, Evans AC, Soucy JP, Wise R, Zijdenbos AP, van G...

Article GUID: 28145075
Quantification of brain cholinergic denervation in Alzheimer's disease using PET imaging with [18F]-FEOBV.

Author(s): Aghourian M, Legault-Denis C, Soucy JP, Rosa-Neto P, Gauthier S, Kostikov A, Gravel P, Bédard MA

Mol Psychiatry. 2017 11;22(11):1531-1538 Authors: Aghourian M, Legault-Denis C, Soucy JP, Rosa-Neto P, Gauthier S, Kostikov A, Gravel P, Bédard MA

Article GUID: 28894304
Altered Regional Cerebral Blood Flow in Idiopathic Hypersomnia.

Author(s): Boucetta S, Montplaisir J, Zadra A, Lachapelle F, Soucy JP, Gravel P, Dang-Vu TT

Sleep. 2017 10 01;40(10): Authors: Boucetta S, Montplaisir J, Zadra A, Lachapelle F, Soucy JP, Gravel P, Dang-Vu TT

Article GUID: 28958044
Amyloid and tau signatures of brain metabolic decline in preclinical Alzheimer's disease.

Author(s): Pascoal TA, Mathotaarachchi S, Shin M, Park AY, Mohades S, Benedet AL, Kang MS, Massarweh G, Soucy JP, Gauthier S, Rosa-Neto P, Alzheimer’s ...

Eur J Nucl Med Mol Imaging. 2018 06;45(6):1021-1030 Authors: Pascoal TA, Mathotaarachchi S, Shin M, Park AY, Mohades S, Benedet AL, Kang MS, Massarweh G, Soucy JP, Gauthier S, Rosa-Neto P, Alzheim...

Article GUID: 29396637
Altered brain perfusion patterns in wakefulness and slow-wave sleep in sleepwalkers.

Author(s): Desjardins MÈ, Baril AA, Soucy JP, Dang-Vu TT, Desautels A, Petit D, Montplaisir J, Zadra A

Sleep. 2018 05 01;41(5): Authors: Desjardins MÈ, Baril AA, Soucy JP, Dang-Vu TT, Desautels A, Petit D, Montplaisir J, Zadra A

Article GUID: 29514303
Impaired sensorimotor processing during complex gait precedes behavioral changes in middle-aged adults.

Author(s): Mitchell T, Starrs F, Soucy JP, Thiel A, Paquette C

J Gerontol A Biol Sci Med Sci. 2018 Sep 21;: Authors: Mitchell T, Starrs F, Soucy JP, Thiel A, Paquette C

Article GUID: 30247510
Title:Non-invasive in vivo hyperspectral imaging of the retina for potential biomarker use in Alzheimer's disease.
Authors:Hadoux X,  Hui F,  Lim JKH,  Masters CL,  Pébay A,  Chevalier S,  Ha J,  Loi S,  Fowler CJ,  Rowe C,  Villemagne VL,  Taylor EN,  Fluke C,  Soucy JP,  Lesage F,  Sylvestre JP,  Rosa-Neto P,  Mathotaarachchi S,  Gauthier S,  Nasreddine ZS,  Arbour JD,  Rhéaume MA,  Beaulieu S,  Dirani M,  Nguyen CTO,  Bui BV,  Williamson R,  Crowston JG,  van Wijngaarden P
Link:https://www.ncbi.nlm.nih.gov/pubmed/31530809?dopt=Abstract
DOI:10.1038/s41467-019-12242-1
Category:Nat Commun
PMID:31530809
Dept Affiliation: PERFORM
1 Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, 3002, VIC, Australia. xavier.hadoux@unimelb.edu.au.
2 Ophthalmology, Department of Surgery, University of Melbourne, Parkville, 3010, VIC, Australia. xavier.hadoux@unimelb.edu.au.
3 Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, 3002, VIC, Australia.
4 Ophthalmology, Department of Surgery, University of Melbourne, Parkville, 3010, VIC, Australia.
5 Department of Optometry and Vision Sciences, University of Melbourne, Parkville, 3010, VIC, Australia.
6 The Florey Institute, The University of Melbourne, Parkville, 3010, VIC, Australia.
7 Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, 3800, VIC, Australia.
8 Neuropsychiatry Unit, North Western Mental Health, Melbourne Health, Royal Melbourne Hospital, Parkville, 3050, VIC, Australia.
9 University of Melbourne, Department of Psychiatry, Parkville, 3010, VIC, Australia.
10 Austin Health, Melbourne, 3084, VIC, Australia.
11 Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Melbourne, 3122, VIC, Australia.
12 OzGrav-Swinburne, Centre for Astrophysics & Supercomputing, Swinburne University of Technology, Melbourne, 3122, VIC, Australia.
13 Advanced Visualisation Laboratory, Digital Research Innovation Capability Platform, Swinburne University of Technology, Melbourne, 3122, VIC, Australia.
14 McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, H3A 2B4, QC, Canada.
15 PERFORM Centre, Concordia University, Montreal, H4B 1R6, QC, Canada.
16 École Polytechnique de Montréal, Institut de génie biomédical, Département de Génie électrique, Montreal, H3C 3A7, QC, Canada.
17 Research Center, Montreal Heart Institute, Montreal, H1T 1C8, QC, Canada.
18 Optina Diagnostics, Montreal, H4T 1Z2, QC, Canada.
19 Translational Neuroimaging Laboratory, McGill Centre for Studies in Aging, Douglas Mental Health University Institute, Montreal, H4H 1R3, QC, Canada.
20 Alzheimer's Disease Research Unit, The McGill University Research Centre for Studies in Aging, McGill University, Montreal, H4H 1R3, QC, Canada.
21 MoCA Clinic and Institute, Greenfield Park, J4V 2J2, QC, Canada.
22 Clinique ophtalmologique 2121, Montreal, H3H 1G6, QC, Canada.
23 Département de médecine nucléaire, Hôpital Maisonneuve-Rosemont, Montreal, H1T 2M4, QC, Canada.
24 Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, 169856, Singapore.
25 Murdoch Children's Research Institute and Department of Paediatrics, University of Melbourne, Melbourne, 3052, VIC, Australia.
26 Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, 3002, VIC, Australia. peterv@unimelb.edu.au.
27 Ophthalmology, Department of Surgery, University of Melbourne, Parkville, 3010, VIC, Australia. peterv@unimelb.edu.au.

Description:

Non-invasive in vivo hyperspectral imaging of the retina for potential biomarker use in Alzheimer's disease.

Nat Commun. 2019 Sep 17;10(1):4227

Authors: Hadoux X, Hui F, Lim JKH, Masters CL, Pébay A, Chevalier S, Ha J, Loi S, Fowler CJ, Rowe C, Villemagne VL, Taylor EN, Fluke C, Soucy JP, Lesage F, Sylvestre JP, Rosa-Neto P, Mathotaarachchi S, Gauthier S, Nasreddine ZS, Arbour JD, Rhéaume MA, Beaulieu S, Dirani M, Nguyen CTO, Bui BV, Williamson R, Crowston JG, van Wijngaarden P

Abstract

Studies of rodent models of Alzheimer's disease (AD) and of human tissues suggest that the retinal changes that occur in AD, including the accumulation of amyloid beta (Aß), may serve as surrogate markers of brain Aß levels. As Aß has a wavelength-dependent effect on light scatter, we investigate the potential for in vivo retinal hyperspectral imaging to serve as a biomarker of brain Aß. Significant differences in the retinal reflectance spectra are found between individuals with high Aß burden on brain PET imaging and mild cognitive impairment (n?=?15), and age-matched PET-negative controls (n?=?20). Retinal imaging scores are correlated with brain Aß loads. The findings are validated in an independent cohort, using a second hyperspectral camera. A similar spectral difference is found between control and 5xFAD transgenic mice that accumulate Aß in the brain and retina. These findings indicate that retinal hyperspectral imaging may predict brain Aß load.

PMID: 31530809 [PubMed - in process]