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Effects of hypertension on cerebral cortical thickness alterations in patients with type 2 diabetes

Published:October 05, 2019DOI:https://doi.org/10.1016/j.diabres.2019.107872

      Highlights

      • HTN may accelerate cortical thickness reduction in T2DM patients.
      • T2DM showed cognitive dysfunction and elevated CRP level.
      • HTN, Insulin resistance and blood lipid are associated with CT alterations in T2DM patients.

      Abstract

      Aims

      Although hypertension (HTN) is the high comorbidity of Type 2 diabetes mellitus (T2DM) and known to be a vascular risk factor for brain damage, the effects of HTN on brain function in T2DM patients are not well understood. Present study was performed to investigate whether HTN might accelerate the Cerebral cortical thickness (CT) alterations in patients with T2DM.

      Methods

      We enrolled 35 participants with only T2DM, 25 T2DM patients with HTN (HT2DM) and 28 healthy controls (HCs). The cognitive function was assessed and brain image data was collected then the CT was calculated for each participant. Partial correlations between the CT of each brain region and standard laboratory testing data and neuropsychological scale scores were also analyzed. Multivariable regression analysis was performed to evaluated the vascular risk factors and brain regions with different CT in HT2DM patients.

      Results

      Cognitive impairment is associated with thinning of the cerebral cortical thickness reduction in T2DM patients. CT thinning in the left inferior parietal lobe, left posterior cingulate and right precuneus were observed in HT2DM group relative to only T2DM group. Furthermore, the CT decreasing in the right precuneus was negatively correlated with duration of HTN.

      Conclusion

      The current study revealed that coexistent HTN may accelerate the CT reduction in T2DM patients.

      Keywords

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