Evidence map›Paper›PMID 28504685›Full record

ArticleLaboratory investigation; a journal of technical methods and pathology2017

Spleen-derived lipocalin-2 in the portal vein regulates Kupffer cells activation and attenuates the development of liver fibrosis in mice.

Tomonori Aoyama, Kyoko Kuwahara-Arai, Akira Uchiyama, Kazuyoshi Kon, Hironao Okubo, Shunhei Yamashina, Kenichi Ikejima, Shigehiro Kokubu, Akihisa Miyazaki, Sumio Watanabe

Abstract read
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In one paragraph

Article in Laboratory investigation; a journal of technical methods and pathology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

21 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
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  4. [Research progress on the mechanistic role and constituents of hepatic macrophages during the occurrence and development of hepatic fibrosis].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2025
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  13. Article
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  15. BioMed research international · 2021
    Article
  16. Article
  17. Review
  18. Liver Macrophages: Old Dogmas and New Insights.Hepatology communications · 2019
    Review
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  20. Review
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

10 authors at 2 institutions in 1 country.

Tomonori AoyamaDepartment of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.ORCID 0000-0002-3147-6496
Kyoko Kuwahara-AraiDepartment of Microbiology, Juntendo University School of Medicine, Tokyo, Japan.
Akira UchiyamaDepartment of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Kazuyoshi KonDepartment of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Hironao OkuboDepartment of Gastroenterology, Juntendo University Nerima Hospital, Tokyo, Japan.
Shunhei YamashinaDepartment of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Kenichi IkejimaDepartment of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Shigehiro KokubuInstitute for Liver Disease Minimal Invasive Treatment, Shin-Yurigaoka, General Hospital, Kanagawa, Japan.
Akihisa MiyazakiDepartment of Gastroenterology, Juntendo University Nerima Hospital, Tokyo, Japan.
Sumio WatanabeDepartment of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Juntendo University · JPJuntendo University Nerima Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The liver has an immune tolerance against gut-derived products from the portal vein (PV). A disruption of the gut-liver axis leads to liver injury and fibrosis. The spleen is connected to the PV and regulates immune functions. However, possible splenic effects on liver fibrosis development are unclear. Lipocalin-2 (Lcn2) is an antimicrobial protein that regulates macrophage activation. To clarify the role of the spleen in liver fibrosis development, we induced liver fibrosis in mice after splenectomy, and investigated liver fibrosis development. Liver fibrosis resulted in significantly increased splenic Lcn2 levels, but all other measured cytokine levels were unchanged. Splenectomized mice showed enhanced liver fibrosis and inflammation accompanied by significantly decreased Lcn2 levels in PV. Lipopolysaccharide-stimulated primary Kupffer cells, resident liver macrophages, which were treated with recombinant Lcn2 (rLcn2) produced less tumor necrosis factor-α and Ccl2 and the activation of hepatic stellate cells, the effector cells for collagen production in the liver, was suppressed by co-culture with rLcn2-treated Kupffer cells. In addition, the involvement of gut-derived products in splenectomized mice was evaluated by gut sterilization. Interestingly, gut sterilization blocked the effect of splenectomy on liver fibrosis development. In conclusion, spleen deficiency accelerated liver fibrosis development and decreased PV Lcn2 levels. The mechanism of splenic protection against liver fibrosis development may involve the splenic Lcn2, triggered by gut-derived products that enter the liver through the PV, regulates Kupffer cells activated by the gut-liver axis. Thus, the splenic Lcn2 may have an important role in regulating the immune tolerance of the liver in liver fibrosis development.

Indexed as

AnimalsAntigens, CDAntigens, Differentiation, MyelomonocyticCarbon TetrachlorideCD68 MoleculeInflammationKupffer CellsLipocalin-2LiverLiver CirrhosisMaleMiceMice, Inbred C57BLSpleenAntigens, CDAntigens, Differentiation, MyelomonocyticCarbon TetrachlorideCD68 antigen, humanCD68 MoleculeLipocalin-2

Identifiers

PMID28504685
OpenAlexW2616447695

What OpenQuestion holds

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Read underepoch 390

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.