Frontiers in Aging Neuroscience (Jun 2021)

The Cerebellum Is Related to Cognitive Dysfunction in White Matter Hyperintensities

  • Shanshan Cao,
  • Shanshan Cao,
  • Shanshan Cao,
  • Jiajia Nie,
  • Jiajia Nie,
  • Jiajia Nie,
  • Jun Zhang,
  • Chen Chen,
  • Chen Chen,
  • Chen Chen,
  • Xiaojing Wang,
  • Xiaojing Wang,
  • Yuanyuan Liu,
  • Yuanyuan Liu,
  • Yuting Mo,
  • Yuting Mo,
  • Yuting Mo,
  • Baogen Du,
  • Baogen Du,
  • Baogen Du,
  • Yajuan Hu,
  • Yajuan Hu,
  • Yajuan Hu,
  • Yanghua Tian,
  • Yanghua Tian,
  • Yanghua Tian,
  • Yanghua Tian,
  • Qiang Wei,
  • Qiang Wei,
  • Qiang Wei,
  • Kai Wang,
  • Kai Wang,
  • Kai Wang,
  • Kai Wang

DOI
https://doi.org/10.3389/fnagi.2021.670463
Journal volume & issue
Vol. 13

Abstract

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ObjectiveWhite matter hyperintensities (WMHs) on magnetic resonance imaging (MRI) is frequently presumed to be secondary to cerebral small vessel disease (CSVD) and associated with cognitive decline. The cerebellum plays a key role in cognition and has dense connections with other brain regions. Thus, the aim of this study was to investigate if cerebellar abnormalities could occur in CSVD patients with WMHs and the possible association with cognitive performances.MethodsA total of 104 right-handed patients with WMHs were divided into the mild WMHs group (n = 39), moderate WMHs group (n = 37), and severe WMHs group (n = 28) according to the Fazekas scale, and 36 healthy controls were matched for sex ratio, age, education years, and acquired resting-state functional MRI. Analysis of voxel-based morphometry of gray matter volume (GMV) and seed-to-whole-brain functional connectivity (FC) was performed from the perspective of the cerebellum, and their correlations with neuropsychological variables were explored.ResultsThe analysis revealed a lower GMV in the bilateral cerebellum lobule VI and decreased FC between the left- and right-sided cerebellar lobule VI with the left anterior cingulate gyri in CSVD patients with WMHs. Both changes in structure and function were correlated with cognitive impairment in patients with WMHs.ConclusionOur study revealed damaged GMV and FC in the cerebellum associated with cognitive impairment. This indicates that the cerebellum may play a key role in the modulation of cognitive function in CSVD patients with WMHs.

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