Cerebral Small Vessel Disease: Therapeutic Approaches Targeting Neuroinflammation, Oxidative Stress, and Endothelial Dysfunction
Abstract
Cerebral small vessel disease (cSVD) is a common cause of stroke and dementia. Ageing, hypertension, hyperglycaemia, and smoking make up the biggest risk factors for cSVD. They individually or collectively increase the levels of reactive oxygen species, pro-inflammatory cytokines and matrix metalloproteinases, decrease the bioavailability of nitric oxide, and, in the process, compromise the structural integrity and function of the vascular endothelium, blood-brain barrier, and brain parenchyma. These then appear as white matter hyperintensities, enlarged perivascular spaces, cerebral microbleeds, and atrophy in cerebral imaging. As there is currently no curative therapy for cSVD, prevention or delay of cSVD remains of particular importance to preserve quality of life for as long as possible. Bearing that in mind, this review explores whether drugs used for other neurovascular conditions may prevent neuroinflammation and oxidative damage and effectively maintain endothelial function and blood-brain barrier integrity. It also examines whether potential benefits may be extended to cSVD. The list of drugs includes anti-anginal drugs, acetylcholine esterase inhibitors, β-hydroxy β-methylglutaryl-CoA reductase inhibitors, lithium drugs, phosphodiesterase inhibitors, oral antihyperglycaemic drugs, and tetracycline antibiotics. This review discusses the mechanisms of action of these agents and critically evaluates preclinical, translational, and clinical research pertaining to cSVD.
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