Vascular cognitive impairment and Alzheimer's disease: role of cerebral hypoperfusion and oxidative stress

Helena [Hyun Ah] Kim, Alyson A Miller, Grant R Drummond, Amanda G Thrift, Thiruma Arumugam, Thanh G Phan, Velandai K Srikanth, Christopher G Sobey

Research output: Contribution to journalArticleResearchpeer-review

48 Citations (Scopus)

Abstract

Cerebrovascular disease may lead to a wide range of cognitive changes, referred to collectively as vascular cognitive impairment. Stroke increases the risk of cognitive impairment and dementia, and may contribute to the progression of Alzheimer s disease (AD). Apart from clinical stroke itself, vascular risk factors are associated with the development of cognitive impairment and dementia. Animal models involving a temporary or permanent interruption of blood flow in the common carotid arteries develop nonprogressive cognitive impairment. Oxidative stress during cerebral hypoperfusion in animal models plays a key role in neuronal death and may thus contribute to the development of cognitive impairment in cerebrovascular disease. Genetic and pharmacological interventions to inhibit the major source of reactive oxygen species, nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, are neuroprotective in experimental cerebral ischemia. Recent studies have demonstrated that inhibition of NADPH oxidase activity can mitigate cognitive impairment in rodent models of cerebral hypoperfusion. In this article, we review the evidence linking cognitive impairment and/or AD with NADPH oxidase-dependent oxidative stress, including the renin-angiotensin system.
Original languageEnglish
Pages (from-to)953 - 959
Number of pages7
JournalNaunyn-Schmiedeberg's Archives of Pharmacology
Volume385
Issue number10
DOIs
Publication statusPublished - 2012

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