Evidence map›Paper›PMID 39292863›Full record

ArticleHepatology (Baltimore, Md.)2025

TREM2 macrophages mediate the beneficial effects of bariatric surgery against MASH.

Gavin Fredrickson, Kira Florczak, Fanta Barrow, Shamsed Mahmud, Katrina Dietsche, Haiguang Wang, Preethy Parthiban, Andrew Hakeem, Rawan Almutlaq, Oyedele Adeyi and 9 more

Abstract read
In one paragraph

Article in Hepatology (Baltimore, Md.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

  1. Review
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  10. Frontiers in immunology · 2026
    Article
  11. Review
  12. Review
  13. Article
  14. Myeloid cells in chronic liver inflammation.Cellular & molecular immunology · 2025
    Review
  15. Review
  16. Review
  17. Article
  18. Article
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  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors.

Gavin FredricksonDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Kira FlorczakDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Fanta BarrowDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Shamsed MahmudDepartment of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, Minnesota, USA.
Katrina DietscheDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Haiguang WangDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Preethy ParthibanDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Andrew HakeemDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Rawan AlmutlaqDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Oyedele AdeyiDepartment of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA.
Adam HermanDepartment of Surgery, University of Minnesota, Minneapolis, Minnesota, USA.
Alessandro BartolomucciDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Christopher StaleyDepartment of Surgery, University of Minnesota, Minneapolis, Minnesota, USA.
Xiao DongDepartment of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, Minnesota, USA.
Cyrus JahansouzDepartment of Surgery, University of Minnesota, Minneapolis, Minnesota, USA.
Jesse W WilliamsDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
Douglas G MashekInstitute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, Minnesota, USA.
Sayeed IkramuddinDepartment of Surgery, University of Minnesota, Minneapolis, Minnesota, USA.
Xavier S ReveloDepartment of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0000-0002-2754-509

Funding

The role of senescent cells in dysregulating immune responses and pathogen controlP01AI172501 · NIAID · UNIVERSITY OF MINNESOTA · PI STEPHEN C JAMESON · 2024 to 2026
$10.9M
Training Grant: Functional Proteomics of AgingT32AG029796 · NIA · UNIVERSITY OF MINNESOTA · PI EDGAR A ARRIAGA, Douglas G Mashek · 2008 to 2026
$6.6M
Minnesota Obesity Prevention Training (MnOPT)T32DK083250 · NIDDK · UNIVERSITY OF MINNESOTA · PI KOTZ, CATHERINE M, LASKA, MELISSA N. · 2010 to 2024
$5.1M
Immune Mechanisms Regulating Cardiac RemodelingR01HL155993 · NHLBI · UNIVERSITY OF MINNESOTA · PI REVELO, XAVIER, VAN BERLO, JOHANNES (JOP) · 2021 to 2024
$2.9M
Mechanisms of B Cell Pathogenicity in Non-Alcoholic Fatty Liver DiseaseR01DK122056 · NIDDK · UNIVERSITY OF MINNESOTA · PI REVELO, XAVIER · 2019 to 2023
$1.7M
Regulation of Foamy Macrophage Differentiation and Survival in AtherosclerosisR01HL166843 · NHLBI · UNIVERSITY OF MINNESOTA · PI Jesse Warren Williams · 2024 to 2026
$1.6M
Vertical Sleeve Gastrectomy for Treatment of NASH: a pilot randomized controlR01DK128325 · NIDDK · UNIVERSITY OF MINNESOTA · PI HAMEED, BILAL, IKRAMUDDIN, SAYEED · 2021 to 2023
$947k
NHLBI NIH HHS R01 HL155993NHLBI NIH HHS R01 HL166843NIAID NIH HHS P01 AI172501NIA NIH HHS T32 AG029796NIDDK NIH HHS R01 DK122056NIDDK NIH HHS R01 DK128325NIDDK NIH HHS T32 DK083250
6 · The paper itself

Abstract

BACKGROUND AND

aimsFor patients with obesity and metabolic syndrome, bariatric procedures such as vertical sleeve gastrectomy (VSG) have a clear benefit in ameliorating metabolic dysfunction-associated steatohepatitis (MASH). While the effects of bariatric surgeries have been mainly attributed to nutrient restriction and malabsorption, whether immuno-modulatory mechanisms are involved remains unclear. APPROACH AND

resultUsing murine models, we report that VSG ameliorates MASH progression in a weight loss-independent manner. Single-cell RNA sequencing revealed that hepatic lipid-associated macrophages (LAMs) expressing the triggering receptor expressed on myeloid cells 2 (TREM2) repress inflammation and increase their lysosomal activity in response to VSG. Remarkably, TREM2 deficiency in mice ablates the reparative effects of VSG, suggesting that TREM2 is required for MASH resolution. Mechanistically, TREM2 prevents the inflammatory activation of macrophages and is required for their efferocytic function.

conclusionsOverall, our findings indicate that bariatric surgery improves MASH through a reparative process driven by TREM2+ macrophages, providing insights into the mechanisms of disease reversal that may result in new therapies and improved surgical interventions.

Indexed as

Bariatric SurgeryMacrophagesMembrane GlycoproteinsReceptors, ImmunologicAnimalsDisease Models, AnimalMaleMiceMice, Inbred C57BLMice, KnockoutObesityMembrane GlycoproteinsReceptors, ImmunologicTrem2 protein, mouseinflammationlipid-associated macrophagesNASHscRNA-seqvertical sleeve gastrectomy

Identifiers

PMID39292863
PMCPMC11913751

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Registered trials

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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.