Disrupted Network Topology Contributed to Spatial Navigation Impairment in Patients With Mild Cognitive Impairment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F21%3A00075216" target="_blank" >RIV/00159816:_____/21:00075216 - isvavai.cz</a>

Alternative codes found

RIV/00064203:_____/21:10428682 RIV/00216208:11130/21:10428682

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fnagi.2021.630677/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fnagi.2021.630677/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fnagi.2021.630677" target="_blank" >10.3389/fnagi.2021.630677</a>

Result language

angličtina

Original language name

Disrupted Network Topology Contributed to Spatial Navigation Impairment in Patients With Mild Cognitive Impairment

Original language description

Impairment in spatial navigation (SN) and structural network topology is not limited to patients with Alzheimer&apos;s disease (AD) dementia and can be detected earlier in patients with mild cognitive impairment (MCI). We recruited 32 MCI patients (65.91 +/- 11.33 years old) and 28 normal cognition patients (NC; 69.68 +/- 10.79 years old), all of whom underwent a computer-based battery of SN tests evaluating egocentric, allocentric, and mixed SN strategies and diffusion-weighted and T-1-weighted Magnetic Resonance Imaging (MRI). To evaluate the topological features of the structural connectivity network, we calculated its measures such as the global efficiency, local efficiency, clustering coefficient, and shortest path length with GRETNA. We determined the correlation between SN accuracy and network topological properties. Compared to NC, MCI subjects demonstrated a lower egocentric navigation accuracy. Compared with NC, MCI subjects showed significantly decreased clustering coefficients in the left middle frontal gyrus, right rectus, right superior parietal gyrus, and right inferior parietal gyrus and decreased shortest path length in the left paracentral lobule. We observed significant positive correlations of the shortest path length in the left paracentral lobule with both the mixed allocentric-egocentric and the allocentric accuracy measured by the average total errors. A decreased clustering coefficient in the right inferior parietal gyrus was associated with a larger allocentric navigation error. White matter hyperintensities (WMH) did not affect the correlation between network properties and SN accuracy. This study demonstrated that structural connectivity network abnormalities, especially in the frontal and parietal gyri, are associated with a lower SN accuracy, independently of WMH, providing a new insight into the brain mechanisms associated with SN impairment in MCI.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30227 - Geriatrics and gerontology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Frontiers in Aging Neuroscience

ISSN

1663-4365

e-ISSN

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Volume of the periodical

13

Issue of the periodical within the volume

June

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

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UT code for WoS article

000662241900001

EID of the result in the Scopus database

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