Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective

A number of natural and chemical compounds that exert anti-oxidative properties are demonstrated to be beneficial for brain and cognitive function, and some are reported to reduce the risk of dementia. However, the detailed mechanisms by which those anti-oxidative compounds show positive effects on...

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Main Authors: Virginie Lam, Mark Hackett, Ryusuke Takechi
Format: Article
Language:English
Published: MDPI AG 2016-12-01
Series:Nutrients
Subjects:
Online Access:http://www.mdpi.com/2072-6643/8/12/828
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author Virginie Lam
Mark Hackett
Ryusuke Takechi
author_facet Virginie Lam
Mark Hackett
Ryusuke Takechi
author_sort Virginie Lam
collection DOAJ
description A number of natural and chemical compounds that exert anti-oxidative properties are demonstrated to be beneficial for brain and cognitive function, and some are reported to reduce the risk of dementia. However, the detailed mechanisms by which those anti-oxidative compounds show positive effects on cognition and dementia are still unclear. An emerging body of evidence suggests that the integrity of the cerebrovascular blood-brain barrier (BBB) is centrally involved in the onset and progression of cognitive impairment and dementia. While recent studies revealed that some anti-oxidative agents appear to be protective against the disruption of BBB integrity and structure, few studies considered the neuroprotective effects of antioxidants in the context of cerebrovascular integrity. Therefore, in this review, we examine the mechanistic insights of antioxidants as a pleiotropic agent for cognitive impairment and dementia through a cerebrovascular axis by primarily focusing on the current available data from physiological studies. Conclusively, there is a compelling body of evidence that suggest antioxidants may prevent cognitive decline and dementia by protecting the integrity and function of BBB and, indeed, further studies are needed to directly examine these effects in addition to underlying molecular mechanisms.
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spelling doaj.art-11725a57608f47d386009b4133c7049f2022-12-22T03:15:27ZengMDPI AGNutrients2072-66432016-12-0181282810.3390/nu8120828nu8120828Antioxidants and Dementia Risk: Consideration through a Cerebrovascular PerspectiveVirginie Lam0Mark Hackett1Ryusuke Takechi2Curtin Health Innovation Research Institute, Curtin University, Perth WA 6845, AustraliaCurtin Health Innovation Research Institute, Curtin University, Perth WA 6845, AustraliaCurtin Health Innovation Research Institute, Curtin University, Perth WA 6845, AustraliaA number of natural and chemical compounds that exert anti-oxidative properties are demonstrated to be beneficial for brain and cognitive function, and some are reported to reduce the risk of dementia. However, the detailed mechanisms by which those anti-oxidative compounds show positive effects on cognition and dementia are still unclear. An emerging body of evidence suggests that the integrity of the cerebrovascular blood-brain barrier (BBB) is centrally involved in the onset and progression of cognitive impairment and dementia. While recent studies revealed that some anti-oxidative agents appear to be protective against the disruption of BBB integrity and structure, few studies considered the neuroprotective effects of antioxidants in the context of cerebrovascular integrity. Therefore, in this review, we examine the mechanistic insights of antioxidants as a pleiotropic agent for cognitive impairment and dementia through a cerebrovascular axis by primarily focusing on the current available data from physiological studies. Conclusively, there is a compelling body of evidence that suggest antioxidants may prevent cognitive decline and dementia by protecting the integrity and function of BBB and, indeed, further studies are needed to directly examine these effects in addition to underlying molecular mechanisms.http://www.mdpi.com/2072-6643/8/12/828antioxidantsblood-brain barriercognitive impairmentdementia
spellingShingle Virginie Lam
Mark Hackett
Ryusuke Takechi
Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective
Nutrients
antioxidants
blood-brain barrier
cognitive impairment
dementia
title Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective
title_full Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective
title_fullStr Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective
title_full_unstemmed Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective
title_short Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective
title_sort antioxidants and dementia risk consideration through a cerebrovascular perspective
topic antioxidants
blood-brain barrier
cognitive impairment
dementia
url http://www.mdpi.com/2072-6643/8/12/828
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