Academic Journal
Hippocampal hub failure is linked to long-term memory impairment in anti-NMDA-receptor encephalitis - Insights from structural connectome graph theoretical network analysis
| Title: | Hippocampal hub failure is linked to long-term memory impairment in anti-NMDA-receptor encephalitis - Insights from structural connectome graph theoretical network analysis |
|---|---|
| Authors: | André Hechler, Joseph Kuchling, Leonie Müller-Jensen, Johanna Klag, Friedemann Paul, Harald Prüss, Carsten Finke |
| Source: | J Neurol Journal of neurology 271(9), 5886-5898 (2024). doi:10.1007/s00415-024-12545-4 |
| Publisher Information: | Cold Spring Harbor Laboratory, 2023. |
| Publication Year: | 2023 |
| Subject Terms: | Male, Adult, Memory, Long-Term, Adolescent, Original Communication, Anti, Diffusion-weighted MRI, Graph analysis, Human connectome, pathology [Nerve Net], physiopathology [Default Mode Network], diagnostic imaging [Memory Disorders], Hippocampus, physiology [Memory, Long-Term], Young Adult, physiopathology [Nerve Net], Connectome, physiopathology [Memory Disorders], Humans, pathology [Memory Disorders], ddc:610, physiopathology [Anti-N-Methyl-D-Aspartate Receptor Encephalitis], diagnostic imaging [Hippocampus], Anti-N-Methyl-D-Aspartate Receptor Encephalitis, pathology [Default Mode Network], Memory Disorders, diagnostic imaging [Nerve Net], complications [Anti-N-Methyl-D-Aspartate Receptor Encephalitis], Default Mode Network, pathology [Anti-N-Methyl-D-Aspartate Receptor Encephalitis], Middle Aged, ddc, etiology [Memory Disorders], 3. Good health, diagnostic imaging [Anti-N-Methyl-D-Aspartate Receptor Encephalitis], pathology [Hippocampus], Diffusion Tensor Imaging, Anti-N-Methyl-d-Aspartate receptor encephalitis, Integrative Biomedicine [Topic 3], Female, Memory Disorders/pathology [MeSH], Nerve Net/physiopathology [MeSH], Anti-N-Methyl-D-Aspartate Receptor Encephalitis/physiopathology [MeSH], Male [MeSH], Nerve Net/diagnostic imaging [MeSH], Anti-N-Methyl-D-Aspartate Receptor Encephalitis/diagnostic imaging [MeSH], Memory Disorders/diagnostic imaging [MeSH], Anti-N-Methyl-D-Aspartate Receptor Encephalitis/complications [MeSH], Hippocampus/diagnostic imaging [MeSH], Adolescent [MeSH], Female [MeSH], Diffusion Tensor Imaging [MeSH], Adult [MeSH], Humans [MeSH], Connectome [MeSH], Anti-N-Methyl-D-Aspartate Receptor Encephalitis/pathology [MeSH], Memory Disorders/etiology [MeSH], Middle Aged [MeSH], Default Mode Network/physiopathology [MeSH], Memory, Long-Term/physiology [MeSH], Default Mode Network/diagnostic imaging [MeSH], Nerve Net/pathology [MeSH], Memory Disorders/physiopathology [MeSH], Young Adult [MeSH], Hippocampus/pathology [MeSH], Default Mode Network/pathology [MeSH], Nerve Net, Function and Dysfunction of the Nervous System, diagnostic imaging [Default Mode Network] |
| Description: | IntroductionAnti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is characterized by distinct structural and functional brain alterations, predominantly affecting the medial temporal lobes and the hippocampus. Structural connectome analysis with graph-based investigations of network properties allows for an in-depth characterization of global and local network changes and their relationship with clinical deficits in NMDAR encephalitis.ObjectiveTo investigate changes in structural connectivity and network efficiency in NMDAR encephalitis by use of probabilistic whole-brain tractography and graph theoretical analysis of structural brain networks.MethodsStructural networks from sixty-one NMDAR encephalitis patients in the post-acute stage (median time from acute hospital discharge: 18 months) and sixty-one age- and sex-matched healthy controls (HC) were analyzed using diffusion-weighted imaging (DWI)-based probabilistic anatomically-constrained tractography and spherical deconvolution-informed filtering of tractograms. We calculated global, modular, and nodal graph measures indicative of structural connectivity and network reorganization with special focus on default-mode network, medial temporal lobe, and hippocampus. Pathologically altered metrics were included in multiple regression analyses to investigate their potential association with clinical course, disease severity, and cognitive outcome.ResultsPatients with NMDAR encephalitis showed regular global graph metrics, but bilateral reductions of hippocampal node strength (left:p=0.049; right:p=0.013) and increased node strength of right precuneus (p=0.013) compared to HC. Betweenness centrality was decreased for left-sided entorhinal cortex (p=0.042) and left caudal middle frontal gyrus (p = 0.037). Correlation analyses showed a significant association between reduced left hippocampal node strength and verbal long-term memory impairment (p=0.021)ConclusionFocal network property changes of the medial temporal lobes indicate hippocampal hub failure that is associated with memory impairment in NMDAR encephalitis at the post-acute stage, while global structural network properties remain unaltered. Graph theory analysis provides new pathophysiological insight into structural network changes and their association with persistent cognitive deficits in NMDAR encephalitis. |
| Document Type: | Article Other literature type |
| File Description: | application/pdf; application/msword |
| ISSN: | 1432-1459 0340-5354 |
| DOI: | 10.1101/2023.08.18.553940 |
| DOI: | 10.1007/s00415-024-12545-4 |
| Access URL: | https://pubmed.ncbi.nlm.nih.gov/38977462 https://edoc.mdc-berlin.de/id/eprint/24519/2/24519suppl.docx https://repository.publisso.de/resource/frl:6521189 https://mediatum.ub.tum.de/1770803 |
| Rights: | CC BY |
| Accession Number: | edsair.doi.dedup.....202f958bb904b898c4ca2054c7166e88 |
| Database: | OpenAIRE |
| ISSN: | 14321459 03405354 |
|---|---|
| DOI: | 10.1101/2023.08.18.553940 |