Journal
JOURNAL OF ALZHEIMERS DISEASE
Volume 78, Issue 2, Pages 673-681Publisher
IOS PRESS
DOI: 10.3233/JAD-200156
Keywords
Depression symptoms; gray matter volume; subcortical vascular mild cognitive impairment; surface-based morphometry; surface area
Categories
Funding
- National key research program [2017YFC1703606]
- Shenzhen Science and Technology Research Program [JCYJ20170307154620600, JCYJ2017041217 4037594, JCYJ20170317155203481, JCYJ20160428174825490]
- Guangdong Medical Science Foundation [A2020370]
- Sanming Project of Medicine in Shenzhen [SZSM2016 12081]
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Background: Late-life depression often coexists with vascular cognitive impairment and affects the quality of life for elders. However, little is known about cortical morphometric interactions between subcortical vascular mild cognitive impairment (svMCI) and concomitant mild depressive symptoms at the early stage. Objective: We aimed to investigate cortical alterations of svMCI with and without depressive symptoms and determine whether these parameters are associated with depression symptoms and/or cognitive impairments. Methods: Surface based morphometry was performed on 18 svMCI patients with depressive symptoms (svMCI + D), 16 svMCI patients without depressive symptoms (svMCI-D), and 23 normal controls (NC). Results: Compared to NC, both svMCI + D and svMCI-D patients exhibited significantly decreased surface area (SA) in many cortical areas. Interestingly, svMCI + D patients showed significantly increased rather than decreased SA in right lateral occipital gyrus (LOG.R), and a consistent trend of increased SA in these areas compared to svMCI-D. In addition, the svMCI + D showed increased gray matter volume of left pericalcarine (periCAL.L) than svMCI-D, whereas svMCI-D showed decreased gray matter volume of periCAL.L than NC. Further correlation analyses revealed that the SA of left superior temporal gyrus (STG.L) and right lateral orbital part of frontal gyrus (lorbFG.R) were significantly correlated with Hamilton depression rating scale of svMCI + D. Conclusion: In conclusion, these results extend our insight into svMCI and add weight to reevaluation of concomitant early stage depressive symptoms. Moreover, we suggest that LOG.R\periCAL.L\STG.L\lorbFG.R might serve as sensitive and trait-dependent biomarkers to detect concomitant depressive symptoms in svMCI patients.
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