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Review
. 2024 Mar 29;25(7):3833.
doi: 10.3390/ijms25073833.

The Role of NRF2 in Cerebrovascular Protection: Implications for Vascular Cognitive Impairment and Dementia (VCID)

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Review

The Role of NRF2 in Cerebrovascular Protection: Implications for Vascular Cognitive Impairment and Dementia (VCID)

Yizhou Hu et al. Int J Mol Sci. .

Abstract

Vascular cognitive impairment and dementia (VCID) represents a broad spectrum of cognitive decline secondary to cerebral vascular aging and injury. It is the second most common type of dementia, and the prevalence continues to increase. Nuclear factor erythroid 2-related factor 2 (NRF2) is enriched in the cerebral vasculature and has diverse roles in metabolic balance, mitochondrial stabilization, redox balance, and anti-inflammation. In this review, we first briefly introduce cerebrovascular aging in VCID and the NRF2 pathway. We then extensively discuss the effects of NRF2 activation in cerebrovascular components such as endothelial cells, vascular smooth muscle cells, pericytes, and perivascular macrophages. Finally, we summarize the clinical potential of NRF2 activators in VCID.

Keywords: aging; blood–brain barrier; lymphatic system; neuroinflammation; oxidative stress; perivascular macrophage.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic image showing cell types and structure of the arteriole and capillary/venule levels of the cerebral vasculature. In the lower panel, structural components of the blood–brain barrier are labeled in red. Abbreviations: AJ—adherens junction; BM—basement membrane; EC—endothelial cell; TJ—tight junction; PVM—perivascular macrophage; VSMC—vascular smooth muscle cell.
Figure 2
Figure 2
Simplified schematic image of the NRF2/Keap1 pathway.
Figure 3
Figure 3
Schematic image showing NRF2 effects in different cell types of the cerebral vasculature in VCID. BBB, blood–brain barrier; CAM, cell adhesion molecule; CSF, cerebrospinal fluid; EC, endothelial cell; PVM, perivascular macrophage; rCBF, regional cerebral blood flow; TJ, tight junction; VSMC, vascular smooth muscle cell. ↑: increase/upregulate. ↓: decrease/downregulate.

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