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September 2017; 4 (5) ArticleOpen Access

Lipoic acid in secondary progressive MS

A randomized controlled pilot trial

Rebecca Spain, Katherine Powers, Charles Murchison, Elizabeth Heriza, Kimberly Winges, Vijayshree Yadav, Michelle Cameron, Ed Kim, Fay Horak, Jack Simon, Dennis Bourdette
First published June 28, 2017, DOI: https://doi.org/10.1212/NXI.0000000000000374
Rebecca Spain
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Katherine Powers
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Charles Murchison
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Elizabeth Heriza
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Kimberly Winges
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Vijayshree Yadav
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Michelle Cameron
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Ed Kim
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Fay Horak
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Jack Simon
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Dennis Bourdette
From the Neurology Division (R.S., V.Y., M.C., E.K., D.B.), Research Service (K.P., E.H.), and Department of Ophthalmology (K.W.), Veterans Affairs Portland Health Care System, OR; and Department of Neurology (R.S., C.M., K.W., V.Y., E.K., F.H., J.S., D.B.), Advanced Imaging Research Center (K.P.), and Casey Eye Institute (K.W.), Oregon Health & Science University, Portland.
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Full PDF
Citation
Lipoic acid in secondary progressive MS
A randomized controlled pilot trial
Rebecca Spain, Katherine Powers, Charles Murchison, Elizabeth Heriza, Kimberly Winges, Vijayshree Yadav, Michelle Cameron, Ed Kim, Fay Horak, Jack Simon, Dennis Bourdette
Neurol Neuroimmunol Neuroinflamm Sep 2017, 4 (5) e374; DOI: 10.1212/NXI.0000000000000374

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Abstract

Objective: To determine whether lipoic acid (LA), an endogenously produced antioxidant, slowed the whole-brain atrophy rate and was safe in secondary progressive MS (SPMS).

Methods: Patients with SPMS aged 40–70 years enrolled in a single center, 2-year, double-blind, randomized trial of daily oral 1,200 mg LA vs placebo. Primary outcome was change in annualized percent change brain volume (PCBV). Secondary outcomes were changes in rates of atrophy of segmented brain, spinal cord, and retinal substructures, disability, quality of life, and safety. Intention-to-treat analysis used linear mixed models.

Results: Participation occurred between May 2, 2011, and August 14, 2015. Study arms of LA (n = 27) and placebo (n = 24) were matched with mean age of 58.5 (SD 5.9) years, 61% women, mean disease duration of 29.6 (SD 9.5) years, and median Expanded Disability Status Score of 6.0 (interquartile range 1.75). After 2 years, the annualized PCBV was significantly less in the LA arm compared with placebo (−0.21 [standard error of the coefficient estimate (SEE) 0.14] vs −0.65 [SEE 0.10], 95% confidence interval [CI] 0.157–0.727, p = 0.002). Improved Timed 25-Foot Walk was almost but not significantly better in the LA than in the control group (−0.535 [SEE 0.358] vs 0.137 [SEE 0.247], 95% CI −1.37 to 0.03, p = 0.06). Significantly more gastrointestinal upset and fewer falls occurred in LA patients. Unexpected renal failure (n = 1) and glomerulonephritis (n = 1) occurred in the LA cohort. Compliance, measured by pill counts, was 87%.

Conclusions: LA demonstrated a 68% reduction in annualized PCBV and suggested a clinical benefit in SPMS while maintaining favorable safety, tolerability, and compliance over 2 years.

ClinicalTrials.gov identifier: NCT01188811.

Classification of evidence: This study provides Class I evidence that for patients with SPMS, LA reduces the rate of brain atrophy.

GLOSSARY

AE=
adverse event;
CI=
confidence interval;
EAE=
experimental autoimmune encephalomyelitis;
EDSS=
Expanded Disability Status Scale;
GI=
gastrointestinal;
ITT=
intention to treat;
LA=
lipoic acid;
MP-RAGE=
magnetization-prepared rapid acquisition gradient echo;
OCT=
optical coherence tomography;
PCBV=
percent change brain volume;
PI=
principal investigator;
RRMS=
relapsing-remitting MS;
SAE=
serious AE;
SEE=
standard errors of the coefficient estimate;
SPMS=
secondary progressive MS

Footnotes

  • Funding information and disclosures are provided at the end of the article. Go to Neurology.org/nn for full disclosure forms. The Article Processing Charge was funded by the authors.

  • Supplemental data at Neurology.org/nn

  • Received March 7, 2017.
  • Accepted in final form May 15, 2017.
  • Copyright © 2017 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the 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 without permission from the journal.

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