Acute resveratrol consumption improves neurovascular coupling capacity in adults with type 2 diabetes mellitus

Wong, Rachel H. X. and Raederstorff, Daniel and Howe, Peter R. C. (2016) Acute resveratrol consumption improves neurovascular coupling capacity in adults with type 2 diabetes mellitus. Nutrients, 8 (7).

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Abstract

Background: Poor cerebral perfusion may contribute to cognitive impairment in type 2 diabetes mellitus (T2DM). We conducted a randomized controlled trial to test the hypothesis that resveratrol can enhance cerebral vasodilator function and thereby alleviate the cognitive deficits in T2DM.We have already reported that acute resveratrol consumption improved cerebrovascular responsiveness (CVR) to hypercapnia. We now report the effects of resveratrol on neurovascular coupling capacity (CVR to cognitive stimuli), cognitive performance and correlations with plasma resveratrol concentrations. Methods: Thirty-six T2DM adults aged 40–80 years were randomized to consume single doses of resveratrol (0, 75, 150 and 300 mg) at weekly intervals. Transcranial Doppler ultrasound was used to monitor changes in blood flow velocity (BFV) during a cognitive test battery. The battery consisted of dual-tasking (finger tapping with both Trail Making task and Serial Subtraction 3 task) and a computerized multi-tasking test that required attending to four tasks simultaneously. CVR to cognitive tasks was calculated as the per cent increase in BFV from pre-test basal to peak mean blood flow velocity and also as the area under the curve for BFV. Results: Compared to placebo, 75 mg resveratrol significantly improved neurovascular coupling capacity, which correlated with plasma total resveratrol levels. Enhanced performance on the multi-tasking test battery was also evident following 75 mg and 300 mg of resveratrol. Conclusion: a single 75 mg dose of resveratrol was able to improve neurovascular coupling and cognitive performance in T2DM. Evaluation of benefits of chronic resveratrol supplementation is now warranted.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Faculty / Department / School: No Faculty
Date Deposited: 01 Jun 2017 06:11
Last Modified: 02 Nov 2017 01:59
Uncontrolled Keywords: Cerebral perfusion; Cognitive function; Multi-tasking; Neurovascular coupling; Randomized controlled trial; Resveratrol; Transcranial doppler ultrasound; Type 2 diabetes; Blood Flow Velocity; Cerebral Arteries; Cerebrovascular Circulation; Cognition; Cognition Disorders; Diabetes Mellitus, Double-Blind Method; Neurovascular Coupling; Stilbenes; Time Factors; Trail Making Test; Treatment Outcome; Ultrasonography, Transcranial; Vasodilation
Fields of Research : 11 Medical and Health Sciences > 1111 Nutrition and Dietetics > 111199 Nutrition and Dietetics not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970111 Expanding Knowledge in the Medical and Health Sciences
Identification Number or DOI: 10.3390/nu8070425
URI: http://eprints.usq.edu.au/id/eprint/31555

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