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October 20, 2015; 85 (16) ArticleOpen Access

A randomized, double-blind, placebo-controlled trial of resveratrol for Alzheimer disease

R. Scott Turner, Ronald G. Thomas, Suzanne Craft, Christopher H. van Dyck, Jacobo Mintzer, Brigid A. Reynolds, James B. Brewer, Robert A. Rissman, Rema Raman, Paul S. Aisen, For the Alzheimer's Disease Cooperative Study
First published September 11, 2015, DOI: https://doi.org/10.1212/WNL.0000000000002035
R. Scott Turner
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Ronald G. Thomas
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Suzanne Craft
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Christopher H. van Dyck
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Jacobo Mintzer
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Brigid A. Reynolds
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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James B. Brewer
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Robert A. Rissman
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Rema Raman
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Paul S. Aisen
From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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From the Department of Neurology (R.S.T., B.A.R.), Georgetown University, Washington, DC; the Department of Neurosciences (R.G.T., J.B.B., R.A.R., R.R., P.S.A.), University of California, San Diego, La Jolla; the Department of Internal Medicine (S.C.), Wake Forest University, Winston-Salem, NC; the Departments of Psychiatry, Neurology, and Neurobiology (C.H.v.D.), Yale University, New Haven, CT; and the Clinical Biotechnology Research Institute (J.M.), Roper St. Francis Healthcare, Charleston, SC.
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Citation
A randomized, double-blind, placebo-controlled trial of resveratrol for Alzheimer disease
R. Scott Turner, Ronald G. Thomas, Suzanne Craft, Christopher H. van Dyck, Jacobo Mintzer, Brigid A. Reynolds, James B. Brewer, Robert A. Rissman, Rema Raman, Paul S. Aisen, For the Alzheimer's Disease Cooperative Study
Neurology Oct 2015, 85 (16) 1383-1391; DOI: 10.1212/WNL.0000000000002035

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Abstract

Objective: A randomized, placebo-controlled, double-blind, multicenter 52-week phase 2 trial of resveratrol in individuals with mild to moderate Alzheimer disease (AD) examined its safety and tolerability and effects on biomarker (plasma Aβ40 and Aβ42, CSF Aβ40, Aβ42, tau, and phospho-tau 181) and volumetric MRI outcomes (primary outcomes) and clinical outcomes (secondary outcomes).

Methods: Participants (n = 119) were randomized to placebo or resveratrol 500 mg orally once daily (with dose escalation by 500-mg increments every 13 weeks, ending with 1,000 mg twice daily). Brain MRI and CSF collection were performed at baseline and after completion of treatment. Detailed pharmacokinetics were performed on a subset (n = 15) at baseline and weeks 13, 26, 39, and 52.

Results: Resveratrol and its major metabolites were measurable in plasma and CSF. The most common adverse events were nausea, diarrhea, and weight loss. CSF Aβ40 and plasma Aβ40 levels declined more in the placebo group than the resveratrol-treated group, resulting in a significant difference at week 52. Brain volume loss was increased by resveratrol treatment compared to placebo.

Conclusions: Resveratrol was safe and well-tolerated. Resveratrol and its major metabolites penetrated the blood–brain barrier to have CNS effects. Further studies are required to interpret the biomarker changes associated with resveratrol treatment.

Classification of evidence: This study provides Class II evidence that for patients with AD resveratrol is safe, well-tolerated, and alters some AD biomarker trajectories. The study is rated Class II because more than 2 primary outcomes were designated.

GLOSSARY

3G-RES=
3-O-glucuronidated-resveratrol;
4G-RES=
4-O-glucuronidated-resveratrol;
AD=
Alzheimer disease;
ADAS-cog=
Alzheimer's Disease Assessment Scale–cognitive;
ADCS=
Alzheimer's Disease Cooperative Study;
ADCS-ADL=
Alzheimer's Disease Cooperative Study Activities of Daily Living Scale;
AE=
adverse event;
BMI=
body mass index;
CDR-SOB=
Clinical Dementia Rating-sum of boxes;
Cmax=
maximal plasma concentration;
DMSO=
dimethyl sulfoxide;
ITT=
intention-to-treat;
MMRM=
mixed-model repeated-measures;
MMSE=
Mini-Mental State Examination;
NPI=
Neuropsychiatric Inventory;
S-RES=
3-sulfated-resveratrol;
SAE=
serious adverse event

Footnotes

  • Coinvestigators are listed on the Neurology® Web site at Neurology.org.

  • Go to Neurology.org for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article. The Article Processing Charge was paid by NIH.

  • Supplemental data at Neurology.org

  • Received January 6, 2015.
  • Accepted in final form June 19, 2015.
  • © 2015 American Academy of Neurology

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND), which permits downloading and sharing the work provided it is properly cited. The work cannot be changed in any way or used commercially.

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