Evidence map›Paper›PMID 26535997›Full record

ArticleKidney international2016

Inflammation and functional iron deficiency regulate fibroblast growth factor 23 production.

Valentin David, Aline Martin, Tamara Isakova, Christina Spaulding, Lixin Qi, Veronica Ramirez, Kimberly B Zumbrennen-Bullough, Chia Chi Sun, Herbert Y Lin, Jodie L Babitt and 1 more

Open access · greenAbstract 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 305 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
305citing papers in PubMed, 3 pooled it
24.3field-weighted citation impact, top 1% 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

305 citing papers in PubMed, 3 syntheses or guidelines pooled it, 478 citations in OpenAlex.

  1. Pooled it
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  16. Review
  17. Fibroblast Growth Factor 23, Urinary Phosphate, and Risk of Progression of CKD.Clinical journal of the American Society of Nephrology : CJASN · 2026
    Article
  18. Review
  19. Lysophosphatidic Acid Synergizes With 1,25-Dihydroxyvitamin D to Promote Fibroblast Growth Factor-23 Synthesis via MAPK Signaling and Induction of the IL12A Gene.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  20. Review

245 more citing papers are in PubMed but not listed here.

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

11 authors at 3 institutions in 1 country.

Valentin DavidDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA. Electronic address: valentin.david@northwestern.edu.
Aline MartinDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Tamara IsakovaDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Christina SpauldingDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Lixin QiDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Veronica RamirezDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Kimberly B Zumbrennen-BulloughNephrology Division, Program in Membrane Biology, and Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Chia Chi SunNephrology Division, Program in Membrane Biology, and Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Herbert Y LinNephrology Division, Program in Membrane Biology, and Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Jodie L BabittNephrology Division, Program in Membrane Biology, and Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Myles WolfDivision of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Northwestern University · USCenter for Systems Biology · USHarvard University · US

Funding

Regulation of Iron Homeostasis by BMP SignalingR01DK087727 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI BABITT, JODIE L · 2010 to 2024
$6.0M
Regulation of FGF23 in Chronic Kidney Disease (CKD) by iron and inflammationR01DK102815 · NIDDK · NORTHWESTERN UNIVERSITY AT CHICAGO · PI DAVID, NICOLAE VALENTIN · 2015 to 2024
$4.9M
Role of FGF-23 in Mineral Metabolism Across the Spectum of Chronic Kidney DiseaseR01DK076116 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI WOLF, MYLES S · 2007 to 2016
$2.9M
Mentored Patient Oriented Research in Mineral MetabolismK24DK093723 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI WOLF, MYLES S · 2012 to 2016
$803k
NIDDK NIH HHS K24 DK093723NIDDK NIH HHS K24DK093723NIDDK NIH HHS R01 DK076116NIDDK NIH HHS R01DK076116NIDDK NIH HHS R01 DK087727NIDDK NIH HHS R01DK087727NIDDK NIH HHS R01 DK102815NIDDK NIH HHS R01DK102815
6 · The paper itself

Abstract

Circulating levels of fibroblast growth factor 23 (FGF23) are elevated in patients with chronic kidney disease (CKD), but the mechanisms are poorly understood. Here we tested whether inflammation and iron deficiency regulate FGF23. In wild-type mice, acute inflammation induced by single injections of heat-killed Brucella abortus or interleukin-1β (IL-1β) decreased serum iron within 6 h, and was accompanied by significant increases in osseous Fgf23 mRNA expression and serum levels of C-terminal FGF23, but no changes in intact FGF23. Chronic inflammation induced by repeated bacteria or IL-1β injections decreased serum iron, increased osseous Fgf23 mRNA, and serum C-terminal FGF23, but modestly increased biologically active, intact FGF23 serum levels. Chronic iron deficiency mimicked chronic inflammation. Increased osseous FGF23 cleavage rather than a prolonged half-life of C-terminal FGF23 fragments accounted for the elevated C-terminal FGF23 but near-normal intact FGF23 levels in inflammation. IL-1β injection increased Fgf23 mRNA and C-terminal FGF23 levels similarly in wildtype and Col4a3(ko) mice with CKD but markedly increased intact FGF23 levels only in the CKD mice. Inflammation increased Fgf23 transcription by activating Hif1α signaling. Thus, inflammation and iron deficiency stimulate FGF23 production. Simultaneous upregulation of FGF23 cleavage in osteocytes maintains near-normal levels of biologically active, intact circulating FGF23, whereas downregulated or impaired FGF23 cleavage may contribute to elevated intact serum FGF23 in CKD.

Indexed as

AnimalsAutoantigensCell LineCollagen Type IVDeferoxamineFemurFibroblast Growth Factor-23Fibroblast Growth FactorsHypoxia-Inducible Factor 1, alpha SubunitInflammationInterleukin-1betaIronIron DeficienciesMesenchymal Stem CellsMiceMice, Inbred C57BLAutoantigensCollagen Type IVDeferoxamineFgf23 protein, mouseFibroblast Growth Factor-23Fibroblast Growth FactorsHif1a protein, mouseHypoxia-Inducible Factor 1, alpha SubunitInterleukin-1betaIronRNA, MessengerSiderophorestype IV collagen alpha3 chainanemiaboneFGF23hypoxiainflammationmineral metabolism

Identifiers

PMID26535997
PMCPMC4854810
OpenAlexW1963306946

What OpenQuestion holds

Textmetadata
LicenceTDM
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.