Evidence map›Paper›PMID 32269725›Full record

ArticleAmerican journal of translational research2020

Metformin ameliorates bleomycin-induced pulmonary fibrosis in mice by suppressing IGF-1.

Huijuan Xiao, Xiaoxi Huang, Shiyao Wang, Zheng Liu, Run Dong, Dingyun Song, Huaping Dai

Open access · greenAbstract read
In one paragraph

Article in American journal of translational research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 3 pooled it
2.4field-weighted citation impact, top 9% 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

32 citing papers in PubMed, 3 syntheses or guidelines pooled it, 28 citations in OpenAlex.

  1. Pooled it
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  3. Pooled it
  4. Article
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  6. Article
  7. Article
  8. Evidence that metformin promotes fibrosis resolutionActa pharmaceutica Sinica. B · 2025
    Article
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  12. Review
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  16. Review
  17. Immune Mechanisms of Pulmonary Fibrosis with Bleomycin.International journal of molecular sciences · 2023
    Review
  18. Article
  19. Review
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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

7 authors at 4 institutions in 1 country.

Huijuan XiaoDepartment of Respiratory Medicine, Capital Medical University Beijing 100054, P. R. China.
Xiaoxi HuangDepartment of Medical Research, Beijing Chao-Yang Hospital, Capital Medical University Beijing 100020, P. R. China.
Shiyao WangDepartment of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital Beijing 100029, P. R. China.
Zheng LiuDepartment of Medical Research, Beijing Chao-Yang Hospital, Capital Medical University Beijing 100020, P. R. China.
Run DongDepartment of Respiratory Medicine, Zhengzhou Central Hospital Zhengzhou, P. R. China.
Dingyun SongDepartment of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital Beijing 100029, P. R. China.
Huaping DaiDepartment of Respiratory Medicine, Capital Medical University Beijing 100054, P. R. China.
Beijing Chao-Yang Hospital · CNCapital Medical University · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNZhengzhou Central Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Idiopathic pulmonary fibrosis (IPF) is a devastating disease, which is characterized by the progressive deterioration in lung function. In the pathogenesis of IPF, insulin-like growth factor-1 (IGF-1) has been found to be heavily involved. Metformin, a commonly used oral antidiabetic agent, is known to inhibit IGF-1 by the reversal of hyperinsulinemia. In this study, we evaluated the effects of metformin in pulmonary fibrosis in C57/BL6J mice, and further understand the role of IGF-1 signaling pathway involving in this process. Pulmonary fibrosis was induced experimentally in these mice by the intratracheal injection of bleomycin (BLM). Metformin was given orally the day before or 14 days after bleomycin injection, while pirfenidone was used as the positive control. Our study showed that intratracheal injection of bleomycin induced pulmonary fibrosis in mice, with observed elevation in collagen, fibronectin and α-SMA level, characterized by the enhanced IGF-1 and PI3K expression. Metformin was able to inhibit these effects significantly, and its antifibrotic effect had no marked difference with pirfenidone. Our results show that metformin attenuates bleomycin-induced pulmonary fibrosis via IGF-1 pathway.

Indexed as

bleomycinIGF-1metforminmurine modelPulmonary fibrosis

Identifiers

PMID32269725
PMCPMC7137034
OpenAlexW3027744990

What OpenQuestion holds

Textmetadata
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.