Evidence map›Paper›PMID 34899690›Full record

ArticleFrontiers in immunology2021

Extracellular Lactate Acts as a Metabolic Checkpoint and Shapes Monocyte Function Time Dependently.

Judith Schenz, Lena Heilig, Tim Lohse, Lucas Tichy, Katharina Bomans, Michael Büttner, Markus A Weigand, Florian Uhle

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.4field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 13 citations in OpenAlex.

  1. A Role for Astrocyte Metabolism in Species-Specific Neuronal Development.bioRxiv : the preprint server for biology · 2026
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  9. mBio · 2024
    Article
  10. Staphylococci planktonic and biofilm environments differentially affect osteoclast formation.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
    Article
  11. Review
  12. Review
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Judith SchenzDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
Lena HeiligDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
Tim LohseDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
Lucas TichyDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
Katharina BomansDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
Michael BüttnerMetabolomics Core Technology Platform (MCTP) at the Centre for Organismal Studies (COS), Heidelberg University, Heidelberg, Germany.
Markus A WeigandDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
Florian UhleDepartment of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany.
University Hospital Heidelberg · DEHeidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Elevated blood lactate levels are frequently found in critically ill patients and thought to result from tissue hypoperfusion and cellular oxygen shortage. Considering the close relationship between immune cell function and intracellular metabolism, lactate is more than a glycolytic waste molecule but able to regulate the immune response. Our aim was to elucidate the temporal and mechanistic effect of extracellular lactate on monocytes. To this end, primary human monocytes and the human monocytic cell line MonoMac6 were stimulated with various toll-like-receptor agonists after priming with Na-L-lactate under constant pH conditions. As readout, cytokine production was measured, real-time assessment of intracellular energy pathways was performed, and intracellular metabolite concentrations were determined. Irrespective of the immunogenic stimulus, short-term Na-lactate-priming strongly reduced cytokine production capacity. Lactate and hexoses accumulated intracellularly and, together with a decreased glycolytic flux, indicate a lactate-triggered impairment of glycolysis. To counteract intracellular hyperglycemia, glucose is shunted into the branching polyol pathway, leading to sorbitol accumulation. In contrast, long-term priming with Na-L-lactate induced cellular adaption and abolished the suppressive effect. This lactate tolerance is characterized by a decreased cellular respiration due to a reduced complex-I activity. Our results indicate that exogenous lactate shapes monocyte function by altering the intracellular energy metabolism and acts as a metabolic checkpoint of monocyte activation.

Indexed as

Cell LineExtracellular FluidHumansLactic AcidMonocytesLactic Acidcritically illglycolysisimmune dysfunctionimmunometabolismpolyol pathwaysepsissorbitol

Identifiers

PMID34899690
PMCPMC8652120
OpenAlexW3217682373

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.