Cited by 267Dementia and Cognitive Impairment ResearchCholinesterase and Neurodegenerative DiseasesAlzheimer's disease research and treatments

Long-term effects of the concomitant use of memantine with cholinesterase inhibition in Alzheimer disease

Open access
Lopez, O L, Becker, J T, Wahed, A S, Saxton, J, Sweet, R A, Wolk, D A, Klunk, W, DeKosky, S T·2009·Journal of Neurology, Neurosurgery & Psychiatry

Abstract

BACKGROUND: Patients using cholinesterase inhibitors (ChEIs) have a delay in nursing home (NH) admission compared with those who were not using the medication. There are no long-term studies of the effects of memantine in combination with ChEIs use in Alzheimer disease (AD). This study was conducted to examine the effects of ChEIs and memantine on time to death and time to NH admission. METHODS: Time to NH admission and death was examined in 943 probable AD patients who had at least a 1-year follow-up evaluation. Of these patients, 140 (14.9%) used both ChEIs and memantine, 387 (41%) [corrected] used only ChEIs, and 416 (44.1%) [corrected] used neither. The mean (SD) follow-up time was 62.3 (35.8) months. The analysis was conducted with multivariable Cox proportional hazard models controlling for critical covariates (ie, age, education level, gender, severity of the dementia, hypertension, diabetes mellitus, heart disease, psychiatric symptoms and use of psychotropic medications). RESULTS: Compared with those who never used cognitive enhancers, patients who used ChEIs had a significant delay in NH admission (HR: 0.37, 95% CI 0.27 to 0.49); this effect was significantly augmented with the addition of memantine (HR: 0.29, 95% CI 0.11 to 0.72) (memantine+ChEI vs ChEI alone). ChEIs alone, or in combination with memantine had no significant association on time to death. CONCLUSIONS: This observational study revealed that the addition of the NMDA receptor antagonist memantine to the treatment of AD with ChEI significantly altered the treated history of AD by extending time to nursing home admission.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1136/jnnp.2008.158964

Cites

57 of 57 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Short-term randomized controlled trials, longer-term open-label extensions, and long-term observational prospective clinical cohort effectiveness studies support the safety and benefits of anti-AD treatments in combination, most frequently as memantine added on to a stable regimen of background cholinesterase inhibitor treatment.

    “Short-term (6-12 months) RCTs (level I evidence), longer-term (12-36 months) openlabel extensions of RCTs (level II or III evidence), and long-term (2 to 5-plus years) observational prospective clinical cohort effectiveness studies (level II evidence) support the safety and benefits of anti-AD treatments in combination, most frequently as memantine added on to a stable regimen of background ChEI”

    From The Alzheimer’s Disease Clinical Spectrum (2019) · cites this paper as [117]

  • Longer-term prospective observational clinical patient cohort studies report reduced clinical decline in patients with AD treated at any stage.

    “Longer-term prospective observational clinical patient cohort studies report reduced clinical decline in patients with AD treated at any stage.[114][115][116][117][118][119]”

    From The Alzheimer’s Disease Clinical Spectrum (2019) · cites this paper as [117]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [32]APA Diagnostic and statistical manual on mental disorders—Revised (DSM-III-R) 1987 3rd edn. Washington, DC American Psychiatric Press

Cited by

Sorted by citations

Authors
Lopez, O. L., Becker, J. T., Wahed, A. S., Saxton, J., Sweet, R. A., Wolk, D. A., Klunk, W., & DeKosky, S. T.
Affiliations
University of Pittsburgh (US)
Venue
Journal of Neurology, Neurosurgery & Psychiatry
Publisher
BMJ
Published
2009-02-09
Volume
80
Issue
6
Pages
600-607
ISSN
0022-3050 (ISSN-L)
OpenAlex
W2171545307
Cited by
266
References
56
Citations by year
2026: 6 · 2025: 7 · 2024: 10 · 2023: 5 · 2022: 9 · 2021: 5 · 2020: 11 · 2019: 7 · 2018: 14 · 2017: 14 · 2016: 18 · 2015: 26 · 2014: 18 · 2013: 25 · 2012: 30
FWCI
18.51
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurology Neurosurgery & Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • National Institutes of Health (5p01ag003705-04)
  • National Institute on Aging (AG 05-133, AG 20098, AG027224, P50AG005133, U01AG016976, AG 03705, R01AG020098, AG-16976, R56AG020098, R01AG027224)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Pharmacology › Cholinesterase and Neurodegenerative Diseases
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
Alzheimer's disease, memantine, cholinesterase inhibitors, combination therapy, nursing home admission, time to death, NMDA receptor antagonists, long-term effects
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Cholinesterase Inhibitors, Drug Therapy, Combination, Female, Follow-Up Studies, Homes for the Aged, Humans, Male, Memantine, Mental Status Schedule, Neuropsychological Tests, Nursing Homes, Patient Admission, Survival Analysis, Excitatory Amino Acid Antagonists, Nootropic Agents

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review