Evidence map›Paper›PMID 34400742›Full record

ArticleScientific reports2021

Vitamin D suppresses bleomycin-induced pulmonary fibrosis by targeting the local renin-angiotensin system in the lung.

Jianjun Chang, Hongguang Nie, Xin Ge, Jie Du, Weicheng Liu, Xue Li, Yue Sun, Xinzhi Wei, Zhe Xun, Yan Chun Li

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

28 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Vitamin D in pulmonary disease.Breathe (Sheffield, England) · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Effect of CTMP1 gene on pulmonary fibrosis.Toxicological research · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. 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

10 authors at 2 institutions in 2 countries.

Jianjun ChangInstitute of Health Sciences, China Medical University, Shenyang, Liaoning, China.
Hongguang NieDepartment of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, Liaoning, China. hgnie@cmu.edu.cn.
Xin GeInstitute of Health Sciences, China Medical University, Shenyang, Liaoning, China.
Jie DuDepartment of Medicine, Division of Biological Sciences, The University of Chicago, Chicago, IL, 60637, USA.
Weicheng LiuDepartment of Medicine, Division of Biological Sciences, The University of Chicago, Chicago, IL, 60637, USA.
Xue LiInstitute of Health Sciences, China Medical University, Shenyang, Liaoning, China.
Yue SunInstitute of Health Sciences, China Medical University, Shenyang, Liaoning, China.
Xinzhi WeiInstitute of Health Sciences, China Medical University, Shenyang, Liaoning, China.
Zhe XunInstitute of Health Sciences, China Medical University, Shenyang, Liaoning, China.
Yan Chun LiDepartment of Medicine, Division of Biological Sciences, The University of Chicago, Chicago, IL, 60637, USA. cyan@medicine.bsd.uchicago.edu.
China Medical University · CNUniversity of Chicago · US

Funding

National Science Foundation of China 81670010
6 · The paper itself

Abstract

Idiopathic pulmonary fibrosis (IPF) is a severe disorder leading to progressive and irreversible loss of pulmonary function. In this study we investigated the anti-fibrotic effect of vitamin D using a mouse model of IPF. Lung fibrosis was induced with bleomycin in vitamin D-sufficient and vitamin D-deficient C57BL/6 mice. We found that treatment with active vitamin D analog paricalcitol prevented mouse body weight loss and alleviated lung fibrosis, whereas vitamin D deficiency severely aggravated lung injury. At the molecular level, paricalcitol treatment suppressed the induction of fibrotic inducer TGF-β and extracellular matrix proteins α-SMA, collagen type I and fibronectin in the lung, whereas vitamin D deficiency exacerbated the induction of these proteins. Interestingly, bleomycin treatment activated the local renin-angiotensin system (RAS) in the lung, manifested by the induction of renin, angiotensinogen, angiotensin II and angiotensin receptor type 1 (AT1R). Paricalcitol treatment suppressed the induction of these RAS components, whereas vitamin D deficiency enhanced the activation of the lung RAS. We also showed that treatment of bleomycin-induced vitamin D-deficient mice with AT1R antagonist losartan relieved weight loss, substantially ameliorated lung fibrosis and markedly blocked TGF-β induction in the lung. Moreover, we demonstrated that in lung fibroblast cultures, TGF-β and angiotensin II synergistically induced TGF-β, AT1R, α-SMA, collagen type I and fibronectin, whereas 1,25-dihydroxyvitamin D markedly suppressed the induction of these fibrotic markers. Collectively, these observations strongly suggest that vitamin D mitigates lung fibrosis by blocking the activation of the lung RAS in this mouse model of IPF.

Indexed as

Angiotensin IIAngiotensin II Type 1 Receptor BlockersAngiotensinogenAnimalsBleomycinDisease Models, AnimalErgocalciferolsLosartanLungMiceMice, Inbred C57BLMice, KnockoutPulmonary FibrosisReceptor, Angiotensin, Type 1ReninRenin-Angiotensin SystemAngiotensin IIAngiotensin II Type 1 Receptor BlockersAngiotensinogenBleomycinErgocalciferolsLosartanparicalcitolReceptor, Angiotensin, Type 1ReninTransforming Growth Factor betaVitamin D

Identifiers

PMID34400742
PMCPMC8367953
OpenAlexW3195056751

What OpenQuestion holds

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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.