1
|
Orgogozo JM, Touchon J, Ousset PJ, Pasquier F, Guériot C, Philippe R, Auriacombe S, Hugon J, Schmidt P, Bertrand V, Hajj R, Nabirotchkin S, Guedj M, Goedkoop R, Cohen D. P1‐061: DOUBLE‐BLIND ARGUMENT FOR A SYNERGISTIC THERAPEUTIC EFFECT OF A FIXED LOW‐DOSE COMBINATION OF ACAMPROSATE AND BACLOFEN IN ALZHEIMER'S DISEASE. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jacques Touchon
- Inserm U1061, Université de Montpellier, JT ConseilsMontpellierFrance
| | - Pierre Jean Ousset
- Gerontopole, INSERM U 1027, Alzheimer's' Disease Research and Clinical CenterToulouse University HospitalToulouseFrance
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Joubert S, Gour N, Guedj E, Didic M, Guériot C, Koric L, Ranjeva JP, Felician O, Guye M, Ceccaldi M. Early-onset and late-onset Alzheimer's disease are associated with distinct patterns of memory impairment. Cortex 2015; 74:217-32. [PMID: 26694580 DOI: 10.1016/j.cortex.2015.10.014] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 08/29/2015] [Accepted: 10/24/2015] [Indexed: 10/22/2022]
Abstract
The goal of this study was to investigate the specific patterns of memory breakdown in patients suffering from early-onset Alzheimer's disease (EOAD) and late-onset Alzheimer's disease (LOAD). Twenty EOAD patients, twenty LOAD patients, twenty matched younger controls, and twenty matched older controls participated in this study. All participants underwent a detailed neuropsychological assessment, an MRI scan, an FDG-PET scan, and AD patients had biomarkers as supporting evidence of both amyloïdopathy and neuronal injury. Results of the neuropsychological assessment showed that both EOAD and LOAD groups were impaired in the domains of memory, executive functions, language, praxis, and visuoconstructional abilities, when compared to their respective control groups. EOAD and LOAD groups, however, showed distinct patterns of memory impairment. Even though both groups were similarly affected on measures of episodic, short term and working memory, in contrast semantic memory was significantly more impaired in LOAD than in EOAD patients. The EOAD group was not more affected than the LOAD group in any memory domain. EOAD patients, however, showed significantly poorer performance in other cognitive domains including executive functions and visuoconstructional abilities. A more detailed analysis of the pattern of semantic memory performance among patient groups revealed that the LOAD was more profoundly impaired, in tasks of both spontaneous recall and semantic recognition. Voxel-Based Morphometry (VBM) analyses showed that impaired semantic performance in patients was associated with reduced gray matter volume in the anterior temporal lobe (ATL) region, while PET-FDG analyses revealed that poorer semantic performance was associated with greater hypometabolism in the left temporoparietal region, both areas reflecting key regions of the semantic network. Results of this study indicate that EOAD and LOAD patients present with distinct patterns of memory impairment, and that a genuine semantic impairment may represent one of the clinical hallmarks of LOAD.
Collapse
Affiliation(s)
- Sven Joubert
- Département de psychologie, Université de Montréal, Montréal, Quebec, Canada; Centre de recherche Institut universitaire de gériatrie de Montréal (CRIUGM), Montréal, Quebec, Canada.
| | - Natalina Gour
- Université Aix-Marseille, INSERM, Institut des Neurosciences des Systèmes (INS) UMR 1106, Marseille, France; APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France; Aix-Marseille Université, CNRS, CRMBM UMR 7339, Marseille, France
| | - Eric Guedj
- APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France; APHM, Hôpitaux de la Timone, Pôle d'Imagerie, CEMEREM, Marseille, France
| | - Mira Didic
- Université Aix-Marseille, INSERM, Institut des Neurosciences des Systèmes (INS) UMR 1106, Marseille, France; APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France
| | - Claude Guériot
- APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France
| | - Lejla Koric
- APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France
| | - Jean-Philippe Ranjeva
- Aix-Marseille Université, CNRS, CRMBM UMR 7339, Marseille, France; APHM, Hôpitaux de la Timone, Pôle d'Imagerie, CEMEREM, Marseille, France
| | - Olivier Felician
- Université Aix-Marseille, INSERM, Institut des Neurosciences des Systèmes (INS) UMR 1106, Marseille, France; APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France
| | - Maxime Guye
- Aix-Marseille Université, CNRS, CRMBM UMR 7339, Marseille, France; APHM, Hôpitaux de la Timone, Pôle d'Imagerie, CEMEREM, Marseille, France
| | - Mathieu Ceccaldi
- Université Aix-Marseille, INSERM, Institut des Neurosciences des Systèmes (INS) UMR 1106, Marseille, France; APHM, Hôpitaux de la Timone, Service de Neurologie et de Neuropsychologie, Marseille, France
| |
Collapse
|
3
|
Abstract
An insulin-dependent 26-year-old woman was complaining of nocturnal attacks of transient right hemiplegia. Hypoglycemia was found to be present at the time of each attack, and further investigations showed that these neurological disorders were related to an overdose of insulin. The authors discuss the effects of hypoglycemia on the brain and the pathogenetic theory of "hypoglycemic hemiplegia", involving selective neuronal vulnerability, regional blood flow disturbances or underlying ischaemic disease.
Collapse
Affiliation(s)
- L Milandre
- Clinique neurologique, CHU Timone, Marseille
| | | | | | | | | |
Collapse
|