Observational studyAlzheimer's & dementia : the journal of the Alzheimer's Association2025
Acute effects of lactate infusion on metabolism, AD biomarkers, and cognition: The LEAN study.
Observational study in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05207397 (Lactate for Energy and Neurocognition), which is not on this map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Lactate for Energy and Neurocognition
Who cites it
5 citing papers in PubMed.
- All Is Relative-A Call for Considering "Physiologically Informed" Control Conditions to Improve the Mechanistic Understanding of the Effects of Physical Exercise on Cognition.Scandinavian journal of psychology · 2026Review
- Roles of lactate and protein lactylation in neurogenesis and neurodegenerative disease.Journal of translational medicine · 2026Review
- Article
- The lactate shuttle in ageing: a metabolic bridge between muscle fatigue and brain resilience.Frontiers in physiology · 2026Review
- Acute effects of lactate infusion on metabolism, AD biomarkers, and cognition: The LEAN study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025Observational
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
backgroundImpaired cerebral glucose metabolism is a hallmark of Alzheimer's disease (AD). Lactate is an alternative brain fuel; however, whole-body lactate metabolism has not been measured in AD.
methodsThe Lactate for Energy and Neurocognition Trial (NCT05207397) was a single-arm trial that enrolled 24 cognitively healthy (CH) older adults and 12 cognitively impaired (CI) participants. Subjects underwent a stable isotope lactate infusion to evaluate lactate metabolism, cognitive testing, and blood biomarker analyses. pTau217, brain-derived tau (BD-tau), pTau181, glial fibrillary acidic protein (GFAP), neurofilament light chain (NfL), total tau, and brain-derived neurotrophic factor (BDNF) were analyzed by Simoa HD-X (Quanterix).
resultsLactate metabolic clearance rate did not differ between CH and CI subjects (p = 0.988). After infusion, global cognition was improved (p < 0.001) and plasma pTau217 (-33.8%, p < 0.001), BD-tau (-32.6%, p < 0.001), pTau181 (-21.4%, p < 0.001), GFAP (-39.7%, p < 0.001), and NfL (-19.5%, p < 0.001) were reduced.
conclusionsLactate turnover was not different between diagnosis groups. Lactate infusion improved cognition and reduced AD fluid biomarkers. HIGHLIGHTS: Individuals with Alzheimer's disease (AD) can metabolize lactate as well as healthy controls. Lactate infusion might improve global cognition and processing speed. Lactate infusion results in significant decrease of AD fluid biomarkers.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.