Evidence map›Paper›PMID 27370410›Full record

ArticleKidney international2016

The complement factor 5a receptor 1 has a pathogenic role in chronic inflammation and renal fibrosis in a murine model of chronic pyelonephritis.

Naheed Choudhry, Ke Li, Ting Zhang, Kun-Yi Wu, Yun Song, Conrad A Farrar, Na Wang, Cheng-Fei Liu, Qi Peng, Weiju Wu and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Kidney international, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

34 citing papers in PubMed, 63 citations in OpenAlex.

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  9. Immune defenses in the urinary tract.Trends in immunology · 2023
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  12. COVID-19 and Acute Kidney Injury.Critical care clinics · 2022
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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

12 authors at 4 institutions in 2 countries.

Naheed ChoudhryMedical Research Council Centre for Transplantation, King's College London, Guy's Hospital, London, UK.
Ke LiCore Research Laboratory, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China. Electronic address: ke.li@xjtu.edu.cn.
Ting ZhangCore Research Laboratory, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.
Kun-Yi WuCore Research Laboratory, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.
Yun SongCore Research Laboratory, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.
Conrad A FarrarMedical Research Council Centre for Transplantation, King's College London, Guy's Hospital, London, UK.
Na WangCore Research Laboratory, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.
Cheng-Fei LiuCore Research Laboratory, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.
Qi PengMedical Research Council Centre for Transplantation, King's College London, Guy's Hospital, London, UK.
Weiju WuMedical Research Council Centre for Transplantation, King's College London, Guy's Hospital, London, UK.
Steven H SacksMedical Research Council Centre for Transplantation, King's College London, Guy's Hospital, London, UK.
Wuding ZhouMedical Research Council Centre for Transplantation, King's College London, Guy's Hospital, London, UK. Electronic address: wuding.zhou@kcl.ac.uk.
Second Affiliated Hospital of Xi'an Jiaotong University · CNMedical Research Council · GBKing's College London · GBGuy's Hospital · GB

Funding

Medical Research Council G0600892Medical Research Council G1001141Medical Research Council MR/J006742/1Medical Research Council MR/L020254/1Medical Research Council MR/L022699/1
6 · The paper itself

Abstract

Complement factor 5a (C5a) interaction with its receptor (C5aR1) contributes to the pathogenesis of inflammatory diseases, including acute kidney injury. However, its role in chronic inflammation, particularly in pathogen-associated disorders, is largely unknown. Here we tested whether the development of chronic inflammation and renal fibrosis is dependent on C5aR1 in a murine model of chronic pyelonephritis. C5aR1-deficient (C5aR1-/-) mice showed a significant reduction in bacterial load, tubule injury and tubulointerstitial fibrosis in the kidneys following infection, compared with C5aR1-sufficient mice. This was associated with reduced renal leukocyte infiltration specifically for the population of Ly6Chi proinflammatory monocytes/macrophages and reduced intrarenal gene expression of key proinflammatory and profibrogenic factors in C5aR1-/- mice following infection. Antagonizing C5aR1 decreased renal bacterial load, tissue inflammation and tubulointerstitial fibrosis. Ex vivo and in vitro studies showed that under infection conditions, C5a/C5aR1 interaction upregulated the production of proinflammatory and profibrogenic factors by renal tubular epithelial cells and monocytes/macrophages, whereas the phagocytic function of monocytes/macrophages was down-regulated. Thus, C5aR1-dependent bacterial colonization of the tubular epithelium, C5a/C5aR1-mediated upregulation of local inflammatory responses to uropathogenic E. coli and impairment of phagocytic function of phagocytes contribute to persistent bacterial colonization of the kidney, chronic renal inflammation and subsequent tubulointerstitial fibrosis.

Indexed as

AnimalsAntigens, LyBacterial LoadChronic DiseaseComplement C5aDisease Models, AnimalEpithelial CellsEscherichia coli InfectionsFibrosisInflammationKidneyLeukocytesMacrophagesMiceMice, KnockoutMonocytesAcPhe(ornithine-Pro-cyclohexylamine-Trp-Arg)Antigens, LyC5ar1 protein, mouseComplement C5aLy-6C antigen, mousePeptides, CyclicReceptor, Anaphylatoxin C5aC5aR1chronic inflammationpyelonephritisrenal fibrosis

Identifiers

PMID27370410
PMCPMC4996631
OpenAlexW2464509388

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.