Cited by 52Functional Brain Connectivity StudiesDementia and Cognitive Impairment ResearchNeurobiology of Language and Bilingualism

Functional connectivity changes in behavioral, semantic, and nonfluent variants of frontotemporal dementia

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Reyes, P., Ortega-Merchan, M. P., Rueda, A., Uriza, F., Santamaria-García, Hernando, Rojas-Serrano, N., Rodriguez-Santos, J., Velasco-Leon, M. C. +3 more·2018·Behavioural Neurology

Abstract

Frontotemporal dementia (FTD) affects behavior, language, and personality. This study aims to explore functional connectivity changes in three FTD variants: behavioral (bvFTD), semantic (svPPA), and nonfluent variant (nfvPPA). Seventy-six patients diagnosed with FTD by international criteria and thirty-two controls were investigated. Functional connectivity from resting functional magnetic resonance imaging (fMRI) was estimated for the whole brain. Two types of analysis were done: network basic statistic and topological measures by graph theory. Several hubs in the limbic system and basal ganglia were compromised in the behavioral variant apart from frontal networks. Nonfluent variants showed a major disconnection with respect to the behavioral variant in operculum and parietal inferior. The global efficiency had lower coefficients in nonfluent variants than behavioral variants and controls. Our results support an extensive disconnection among frontal, limbic, basal ganglia, and parietal hubs.

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  • Functional graph theory models captured node-degree differences in the left superior occipital area, left Heschl gyrus, and left frontal inferior pars triangularis.

    “Moreover, the functional graph theory models captured node-degree differences in the left superior occipital area (Agosta et al., 2013; Reyes et al., 2018), left Heschl gyrus (Agosta et al., 2013), and left frontal inferior pars triangularis (Zhou et al., 2012).”
  • The multimodal approach helps to provide information on specific functional and structural alterations capturing differential patterns in FTD.

    “However, the multimodal approach helps to provide information on specific functional and structural alterations capturing differential patterns in FTD (Agosta et al., 2012; Nguyen et al., 2013; Reyes et al., 2018; Whitwell, 2019).”

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Research works printed but not linked: 4

  1. J. D. Rohrer and H. J. Rosen, "Neuroimaging in frontotem- poral dementia," International Review of Psychiatry, vol. 25, no. 2, pp. 221-229, 2013.
  2. C. J. Mummery, K. Patterson, C. J. Price, J. Ashburner, R. S. J. Frackowiak, and J. R. Hodges, "A voxel-based morphometry study of semantic dementia: relationship between temporal lobe atrophy and semantic memory," Annals of Neurology, vol. 47, no. 1, pp. 36-45, 2000.
  3. K. A. Josephs, J. R. Hodges, J. S. Snowden et al., "Neuropatho- logical background of phenotypical variability in frontotem- poral dementia," Acta Neuropathologica, vol. 122, no. 2, pp. 137-153, 2011.
  4. P.-A. Osterrieth, "Le test de copie d'une figure complexe; con- tribution à l'étude de la perception et de la mémoire [Test of copying a complex figure; contribution to the study of percep- tion and memory]," Archives de Psychologie, vol. 30, pp. 206- 356, 1944.

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Authors
Reyes, P., Ortega-Merchan, M. P., Rueda, A., Uriza, F., Santamaria-García, H., Rojas-Serrano, N., Rodriguez-Santos, J., Velasco-Leon, M. C., Rodriguez-Parra, J. D., Mora-Diaz, D. E., & Matallana, D.
Affiliations
  • Pontificia Universidad Javeriana (CO)
  • Departamento de Radiología e Imágenes Diagnósticas, Hospital Universitario San Ignacio, Bogotá, Colombia
  • Facultad de Medicina, Pontificia Universidad Javeriana, Bogotá, Colombia
Corresponding author
Reyes, P.
Venue
Behavioural Neurology
Publisher
Wiley
Published
2018
Volume
2018
Pages
1-10
ISSN
  • 0953-4180 (ISSN-L)
  • 1875-8584
OpenAlex
W2794480419
Cited by
52
References
69
Citations by year
2025: 6 · 2024: 4 · 2023: 13 · 2022: 7 · 2021: 11 · 2020: 5 · 2019: 5 · 2018: 1
FWCI
3.27
Type
journal article
Language
en
Open access
Locations
  • Behavioural Neurology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Greater South Information System
Funders
  • Hospital Universitario San Ignacio (697-2014)
  • COLCIENCIAS (697-2014)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
Keywords
frontotemporal dementia, behavioral variant frontotemporal dementia, semantic dementia, functional connectivity, brain network hubs, graph theory, global efficiency, limbic system, basal ganglia, frontal network, resting-state fMRI
MeSH terms
Aged, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Nerve Net, Aphasia, Primary Progressive, Primary Progressive Nonfluent Aphasia, Frontotemporal Dementia, Connectome

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