Cited by 171Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsBipolar Disorder and Treatment

Clinical and biological effects of long-term lithium treatment in older adults with amnestic mild cognitive impairment: randomised clinical trial

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Forlenza, Orestes V., Radanovic, Márcia, Talib, Leda L., Gattaz, Wagner F.·2019·British Journal of Psychiatry

Abstract

Background: Experimental studies indicate that lithium may facilitate neurotrophic/protective responses in the brain. Epidemiological and imaging studies in bipolar disorder, in addition to a few trials in Alzheimer's disease support the clinical translation of these findings. Nonetheless, there is limited controlled data about potential use of lithium to treat or prevent dementia. Aims: To determine the benefits of lithium treatment in patients with amnestic mild cognitive impairment (MCI), a clinical condition associated with high risk for Alzheimer's disease. Method: A total of 61 community-dwelling, physically healthy, older adults with MCI were randomised to receive lithium or placebo (1:1) for 2 years (double-blind phase), and followed-up for an additional 24 months (single-blinded phase) (trial registration at clinicaltrials.gov: NCT01055392). Lithium carbonate was prescribed to yield subtherapeutic concentrations (0.25–0.5 mEq/L). Primary outcome variables were the cognitive (Alzheimer's Disease Assessment Scale – cognitive subscale) and functional (Clinical Dementia Rating – Sum of Boxes) parameters obtained at baseline and after 12 and 24 months. Secondary outcomes were neuropsychological test scores; cerebrospinal fluid (CSF) concentrations of Alzheimer's disease-related biomarkers determined at 0, 12 and 36 months; conversion rate from MCI to dementia (0–48 months). Results: Participants in the placebo group displayed cognitive and functional decline, whereas lithium-treated patients remained stable over 2 years. Lithium treatment was associated with better performance on memory and attention tests after 24 months, and with a significant increase in CSF amyloid-beta peptide (Aβ 1−42 ) after 36 months. Conclusions: Long-term lithium attenuates cognitive and functional decline in amnestic MCI, and modifies Alzheimer's disease-related CSF biomarkers. The present data reinforces the disease-modifying properties of lithium in the MCI–Alzheimer's disease continuum. Declaration of interest: None.

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Authors
Forlenza, O. V., Radanovic, M., Talib, L. L., & Gattaz, W. F.
Affiliations
Universidade de São Paulo (BR)
Corresponding author
Forlenza, Orestes V.
Venue
British Journal of Psychiatry
Published
2019-04-05
Volume
215
Issue
5
Pages
668-674
ISSN
  • 0007-1250 (ISSN-L)
  • 1472-1465
OpenAlex
W2932882403
Cited by
171
References
25
Citations by year
2026: 30 · 2025: 22 · 2024: 24 · 2023: 20 · 2022: 33 · 2021: 21 · 2020: 10 · 2019: 10
FWCI
14.71
Type
journal article
Language
en
Open access
Locations
  • The British Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Alzheimer's Association (NIRG-08-90688)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (554535/2005-0)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
Keywords
lithium, amnestic mild cognitive impairment, Alzheimer's disease, dementia prevention, cognitive decline, functional decline, cerebrospinal fluid biomarkers, amyloid-beta 42, disease-modifying therapy, older adults, attention and memory
MeSH terms
Aged, Alzheimer Disease, Humans, Lithium, Neuropsychological Tests, Biomarkers, Amyloid beta-Peptides, Disease Progression, Cognitive Dysfunction

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