13 results on '"Haeger, Alexa"'
Search Results
2. Communicative impairment and its neural correlates in Alzheimer's disease and frontotemporal dementia.
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Haeger, Alexa, Muising, Janka, Romanzetti, Sandro, Fimm, Bruno, Matz, Oliver, Schulz, Jörg B., Heim, Stefan, and Reetz, Kathrin
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ALZHEIMER'S disease , *FRONTOTEMPORAL dementia , *TEMPORAL lobe , *CEREBRAL atrophy , *COMMUNICATION barriers , *MAGNETIC resonance imaging , *CEREBROSPINAL fluid examination , *NEUROLINGUISTICS - Abstract
Objective: Communication skills can deteriorate in neurodegenerative diseases such as Alzheimer's disease (AD) and frontotemporal dementia (FTD); however, their clinical assessment and treatment in patient care can be challenging. In the present study, we aimed to quantify the distinctive communication resources and barriers reported by patients and their relatives in AD and FTD and associated these communicative characteristics with clinical parameters, such as the degree of cognitive impairment and atrophy in language‐associated brain areas. Methods: We assessed self‐reported communication barriers and resources in 33 individuals with AD and FTD through an interview on daily‐life communication, using the Aachener KOMPASS questionnaire. We correlated reported communication barriers and resources with atrophy from high‐resolution 3T brain magnetic resonance imaging, neuropsychological assessment, and neurodegenerative markers from cerebrospinal fluid. Results: Communicative impairment was higher in FTD compared to AD. Increased reported communication barriers in our whole sample were associated with the atrophy rate in the left middle temporal lobe, a critical site within the neuronal language network, and with depressive symptoms as well as the semantic word fluency from neuropsychological assessment. The best model for prediction of communicative impairment included the diagnosis (AD or FTD), semantic word fluency, and depressive symptoms. Conclusions: Our study demonstrates that communication barriers and resources can be successfully assessed via a structured interview based on self‐report and report of patients' relatives in practice and are reflected in neuroimaging specific for AD and FTD as well as in further clinical parameters specific for these neurodegenerative diseases. This can potentially open new treatment options for clinical practice and patient care. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Physical activity monitoring in Alzheimer’s disease during sport interventions: a multi-methodological perspective
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David, Shari, primary, Hohenfeld, Christian, additional, Haberl, Luisa, additional, Pahl, Jennifer, additional, Costa, Ana S., additional, Kilders, Axel, additional, Hildebrand, Frank, additional, Schulz, Jörg B., additional, Reetz, Kathrin, additional, and Haeger, Alexa, additional
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- 2023
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4. Accelerated sodium MRI using undersampled 3D SPARKLING at 7T
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Porciuncula Baptista, Renata, Naudin, Mathieu, Giliyar Radhakrishna, Chaithya, Daval-Frérot, Guillaume, Mauconduit, Franck, Haeger, Alexa, Romanzetti, Sandro, Lapert, Marc, Ciuciu, Philippe, Rabrait-Lerman, Cécile, Guillevin, Remy, Vignaud, Alexandre, Boumezbeur, Fawzi, Service NEUROSPIN (NEUROSPIN), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Building large instruments for neuroimaging: from population imaging to ultra-high magnetic fields (BAOBAB), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire commun Imagerie Métabolique Multi-Noyaux Multi-Organes (I3M), Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Centre National de la Recherche Scientifique (CNRS)-Siemens Healthineers, Digital Services, Digital Technology and Innovation, Data Analysis and Computations Through Imaging Modeling-Mathématiques, Imagerie, Santé (DACTIM-MIS), Laboratoire de Mathématiques et Applications (LMA-Poitiers), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Modèles et inférence pour les données de Neuroimagerie (MIND), IFR49 - Neurospin - CEA, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Siemens Healthineers [Saint-Denis], Baobab, Département PEGASE [LBBE] (PEGASE), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Universitätsklinikum RWTH Aachen - University Hospital Aachen [Aachen, Germany] (UKA), Rheinisch-Westfälische Technische Hochschule Aachen University (RWTH), Leducq Foundation (large equipment ERPT program, 360 NEUROVASC7T project), the HPC resources of IDRIS under the allocation 2021-AD011011153 made by GENCI, European Project: 800945,NUMERICS, Ciuciu, Philippe, and International PhD programme in NUMERICal Simulation - NUMERICS - 0000-00-00 - 0000-00-00 - 800945 - VALID
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SPARKLING ,[INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing ,[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging ,[INFO.INFO-IM] Computer Science [cs]/Medical Imaging ,[SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences ,$^{23}$Na ,UHF ,[SDV.IB.IMA] Life Sciences [q-bio]/Bioengineering/Imaging ,[INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing ,[INFO.INFO-IM]Computer Science [cs]/Medical Imaging ,human brain ,[SDV.NEU.SC] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences ,TSC ,compressed sensing - Abstract
Submitted to Magnetic Resonance in Medicine; Purpose: To evaluate the benefits of SPARKLING, a stochastic k-space sampling approach over the deterministic sampling scheme TPI (Twisted Projection Imaging) in the context of accelerated cerebral $^{23}$Na MRI and assessing its impact on tissue sodium concentration (TSC) estimation.Methods: Guided by simulation results, in vitro and in vitro UTE $^{23}$Na MRI datasets were acquired at a 4 mm isotropic resolution from healthy volunteers using both TPI or SPARKLING trajectories with different acceleration factors (AF) on a 7T MR scanner equipped with a 32 channels head coil. Following reconstruction using NUFFT or Proximal Optimized Gradient Method (POGM) algorithms with or without regularization, respectively, the resulting sodium images were compared in terms of effective resolution (FWHM of the PSF), SNR and overall quality. with an in vitro assement of the accuracy of the TSC was performed via external referencing using a 4-point calibration approach. Results: In vivo cerebral sodium images acquired using SPARKLING with an acceleration factor of 32 (TA= 5 min 38 s) are similar to those obtained using TPI at AF=8 (TA= 22 min 34 s) with minimal impact on the accuracy of our TSC quantification. Conclusion: In conditions compatible with clinical examination, undersampled SPARKLING $^{23}$Na MRI can outperform the conventional TPI k-space sampling scheme allowing for shorter acquisition times.
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- 2023
5. Increased brain tissue sodium concentration in Friedreich ataxia: A multimodal MR imaging study
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Krahe, Janna, Dogan, Imis, Didszun, Claire, Mirzazade, Shahram, Haeger, Alexa, Shah, Nadim Joni, Giordano, Ilaria A., Klockgether, Thomas, Madelin, Guillaume, Schulz, Jörg B., Romanzetti, Sandro, and Reetz, Kathrin
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Adult ,pathology [Friedreich Ataxia] ,Cognitive Neuroscience ,Metabolic imaging ,Young Adult ,methods [Magnetic Resonance Imaging] ,Magnetic resonance imaging ,pathology [Brain Stem] ,pathology [Brain] ,Cerebellum ,pathology [Cerebellum] ,Sodium MRI ,Humans ,Radiology, Nuclear Medicine and imaging ,ddc:610 ,diagnostic imaging [Brain] ,diagnostic imaging [Brain Stem] ,Sodium ,Brain ,Middle Aged ,diagnostic imaging [Cerebellum] ,Magnetic Resonance Imaging ,Friedreich ataxia ,Neurology ,Friedreich Ataxia ,Female ,diagnostic imaging [Friedreich Ataxia] ,Neurology (clinical) ,Biomarkers ,Brain Stem - Abstract
NeuroImage: Clinical 34, 103025 (2022). doi:10.1016/j.nicl.2022.103025, Published by Elsevier, [Amsterdam u.a.]
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- 2022
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6. Increased brain tissue sodium concentration in Friedreich ataxia: A multimodal MR imaging study
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Krahe, Janna, primary, Dogan, Imis, additional, Didszun, Claire, additional, Mirzazade, Shahram, additional, Haeger, Alexa, additional, Joni Shah, Nadim, additional, Giordano, Ilaria A., additional, Klockgether, Thomas, additional, Madelin, Guillaume, additional, Schulz, Jörg B., additional, Romanzetti, Sandro, additional, and Reetz, Kathrin, additional
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- 2022
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7. Face Processing in Developmental Prosopagnosia: Altered Neural Representations in the Fusiform Face Area
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Haeger, Alexa, primary, Pouzat, Christophe, additional, Luecken, Volker, additional, N’Diaye, Karim, additional, Elger, Christian, additional, Kennerknecht, Ingo, additional, Axmacher, Nikolai, additional, and Dinkelacker, Vera, additional
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- 2021
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8. Additional file 1 of Imaging the aging brain: study design and baseline findings of the SENIOR cohort
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Haeger, Alexa, Jean-François Mangin, Vignaud, Alexandre, Poupon, Cyril, Grigis, Antoine, Boumezbeur, Fawzi, Frouin, Vincent, Jean-Robert Deverre, Sarazin, Marie, Hertz-Pannier, Lucie, and Bottlaender, Michel
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Additional file 1: Table S1 Model comparison for multiple regression analysis for prediction of White matter lesion volume (A) and White matter, Cortical Gray matter, Left HC and Right HC (B). The selected model with lowest bias-corrected RMSE is represented in bold print.
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- 2020
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9. Effect of a multicomponent exercise intervention on brain metabolism: A randomized controlled trial on Alzheimer's pathology (Dementia‐MOVE)
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Haeger, Alexa, primary, Costa, Ana S., additional, Romanzetti, Sandro, additional, Kilders, Axel, additional, Trautwein, Christian, additional, Haberl, Luisa, additional, Beulertz, Michael, additional, Hildebrand, Frank, additional, Schulz, Jörg B., additional, and Reetz, Kathrin, additional
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- 2020
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10. Cerebral changes improved by physical activity during cognitive decline: A systematic review on MRI studies
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Haeger, Alexa, primary, Costa, Ana S., additional, Schulz, Jörg B., additional, and Reetz, Kathrin, additional
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- 2019
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11. Imaging the aging brain: study design and baseline findings of the SENIOR cohort.
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Haeger, Alexa, Mangin, Jean-François, Vignaud, Alexandre, Poupon, Cyril, Grigis, Antoine, Boumezbeur, Fawzi, Frouin, Vincent, Deverre, Jean-Robert, Sarazin, Marie, Hertz-Pannier, Lucie, Bottlaender, Michel, the SENIOR team, Baron, Christine, Berland, Valérie, Blancho, Nathalie, Desmidt, Séverine, Doublé, Christine, Ginisty, Chantal, Joly-Testault, Véronique, and Laurier, Laurence
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CARDIOVASCULAR diseases risk factors , *POSITRON emission tomography , *BRAIN imaging , *MULTIPLE regression analysis , *AGE - Abstract
Background: Current demographic trends point towards an aging society entailing increasing occurrence and burden of neurodegenerative diseases. In this context, understanding physiological aging and its turning point into neurodegeneration is essential for the development of possible biomarkers and future therapeutics of brain disease. Methods: The SENIOR study represents a longitudinal, observational study including cognitively healthy elderlies aged between 50 and 70 years old at the time of inclusion, being followed annually over 10 years. Our multimodal protocol includes structural, diffusion, functional, and sodium magnetic resonance imaging (MRI) at 3 T and 7 T, positron emission tomography (PET), blood samples, genetics, audiometry, and neuropsychological and neurological examinations as well as assessment of neuronal risk factors. Results: One hundred forty-two participants (50% females) were enrolled in the SENIOR cohort with a mean age of 60 (SD 6.3) years at baseline. Baseline results with multiple regression analyses reveal that cerebral white matter lesions can be predicted by cardiovascular and cognitive risk factors and age. Cardiovascular risk factors were strongly associated with juxtacortical and periventricular lesions. Intra-subject across-test variability as a measure of neuropsychological test performance and possible cognitive marker predicts white matter volume and is significantly associated with risk profile. Division of the cohort into subjects with a higher and lower risk profile shows significant differences in intra-subject across-test variability and volumes as well as cortical thickness of brain regions of the temporal lobe. There is no difference between the lower- and higher-risk groups in amyloid load using PET data from a subset of 81 subjects. Conclusions: We here describe the study protocol and baseline findings of the SENIOR observational study which aim is the establishment of integrated, multiparametric maps of normal aging and the identification of early biomarkers for neurodegeneration. We show that intra-subject across-test variability as a marker of neuropsychological test performance as well as age, gender, and combined risk factors influence neuronal decline as represented by decrease in brain volume, cortical thickness, and increase in white matter lesions. Baseline findings will be used as underlying basis for the further implications of aging and neuronal degeneration as well as examination of brain aging under different aspects of brain pathology versus physiological aging. [ABSTRACT FROM AUTHOR]
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- 2020
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12. Implementation of a telemedicine geriatric co-evaluation in the emergency department: a prospective pilot study.
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Matz O, Villa L, Lecce C, Olaciregui Dague K, Haeger A, Bollheimer LC, Laurentius T, Rossaint R, and Brokmann J
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- Aged, Aged, 80 and over, COVID-19, Female, Geriatrics methods, Health Plan Implementation, Hospitalization statistics & numerical data, Humans, Male, Pilot Projects, Prospective Studies, Reproducibility of Results, Risk Assessment, SARS-CoV-2, Telemedicine methods, Drug Prescriptions statistics & numerical data, Emergency Service, Hospital statistics & numerical data, Geriatric Assessment statistics & numerical data, Geriatrics statistics & numerical data, Telemedicine statistics & numerical data
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INTRODUCTION: Complex drug management is a common challenge in the treatment of geriatric patients. Pandemic scenarios, such as the current one (COVID-19), call for a reduction of face-to-face meetings, especially for elderly patients. Therefore, the aim of the present study was to compare the innovative concept of applying telemedical assessment to geriatric patients in the emergency department (ED) with ED standard treatment. The therapeutic recommendations regarding drug management from the two assessments were compared. A special focus was the use of potentially inadequate drugs (PIMs) for geriatric patients according to the “Fit for the Aged” (FORTA) classification., Methods: 50 patients (40% female) aged ≥70 years and assessed with an Identification of Seniors at Risk Score (ISAR score) of ≥2 admitted to the ED were prospectively enrolled in this study between November 2017 and February 2018. In addition to the standard treatment in the ED, co-evaluation via video transmission was independently carried out by a board-certified geriatrician. Drug recommendations by ED physicians (A) and the geriatrician (B) were compared., Results: There was a significantly higher frequency of recommendations regarding changes to preexisting medication (p <0.001, n = 50) via geriatric telemedicine in comparison with standard ED treatment. The geriatrician intervened significantly more often than the ED physicians: discontinuation of a drug, p <0.001; start of a new drug, p = 0.004; dose change of a drug, p = 0.001; n = 50). Based on the additional therapy recommendations of the geriatrician, the amount of medication taken by the patient was significantly reduced compared with standard ED treatment (ED assessment t(49) = 0.622 vs geriatrician’s assessment t(49) = 4.165; p <0.001; n = 50). Additionally, the number of PIMs was significantly reduced compared with standard medical treatment (p <0.001). The geriatrician changed 53.9% of the drugs (35/65) whereas the ED physicians changed only 12.3% (8/65). Recommendations for immediate drug therapy, however, were made more frequently by ED physicians (p <0.039, n = 50)., Discussion: An early assessment of elderly emergency patients by a geriatrician had a significant impact on the number of drug interventions in the ED. The number of PIMs could be significantly reduced. Whether this also has a positive effect on the further inpatient course needs to be investigated in further prospective studies. The study was retrospectively registered at ClinicalTrials.gov (NCT04148027).  .
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- 2021
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13. Effect of a multicomponent exercise intervention on brain metabolism: A randomized controlled trial on Alzheimer's pathology (Dementia-MOVE).
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Haeger A, Costa AS, Romanzetti S, Kilders A, Trautwein C, Haberl L, Beulertz M, Hildebrand F, Schulz JB, and Reetz K
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Background: Physical activity has shown a positive impact on aging and neurodegeneration and represents a possible treatment option in cognitive decline. However, its underlying mechanisms and influences on brain pathology remain unclear. Dementia-MOVE (Multi-Objective Validation of Exercise) is a randomized-controlled pilot trial, including 50 patients with amnestic cognitive impairment associated with Alzheimer's pathology, aiming to analyze the effect of physical activity and fitness on disease progression., Methods: Dementia-MOVE is divided into two arms, of either an intervention comprising physical activity, for at least twice a week, combined with a psychoeducational program, or a sole psychoeducational program. Physical activity intervention includes a supervised and unsupervised multimodal concept combining resistance, endurance, coordinative, and aerobic training. The primary outcome is the change of brain metabolism due to physical interventional treatment. Besides metabolic magnetic resonance imaging (MRI) including sodium and phosphorus imaging, resting state functional MRI, T1-, T2-weighted and fluid-attenuated inversion recovery (FLAIR), as well as diffusion-weighted imaging (DWI) of the brain and whole-body fat MRI are performed before and after intervention, and will be compared in their sensitivity for the detection of intervention effects. We further assess cognitive performance, neuropsychiatric symptoms, quality of life, fitness, and sleep via questionnaires/interviews and/or fitness trackers, as well as microbiome, under the aspect of Alzheimer's pathology., Discussion: The aim of Dementia-MOVE is to investigate the effect of a multimodal exercise program on Alzheimer's pathology under different aspects of the disease. In this context, one of the main aims is the comparison of different MRI methods regarding their responsiveness for the detection of alterations induced by physical activity. As an underlying goal, new treatment and diagnostic options, as well as the exploration of fitness effects on brain structure and metabolism within a whole-body perspective of Alzheimer's disease are envisaged., Competing Interests: The authors declare that they have no competing interests., (© 2020 The Authors. Alzheimer's & Dementia: Translational Research & Clinical Interventions published by Wiley Periodicals, Inc. on behalf of Alzheimer's Association.)
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- 2020
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