Evidence map›Paper›PMID 23555610›Full record

ArticlePloS one2013

Iron and obesity status-associated insulin resistance influence circulating fibroblast-growth factor-23 concentrations.

José Manuel Fernández-Real, Josep Puig, Marta Serrano, Mónica Sabater, Antoni Rubió, José María Moreno-Navarrete, Marina Fontan, Roser Casamitjana, Gemma Xifra, Francisco José Ortega and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Fibroblast growth factor 23 as a risk factor for incident diabetes.Current opinion in nephrology and hypertension · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Mineral Metabolism in Children: Interrelation between Vitamin D and FGF23.International journal of molecular sciences · 2023
    Review
  9. Article
  10. Article
  11. Review
  12. 1ɑ,25-Dihydroxyvitamin DJournal of cellular and molecular medicine · 2021
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Observational
  19. Review
  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

13 authors at 2 institutions in 1 country.

José Manuel Fernández-RealDepartment of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomédica de Girona, CIBERobn Fisiopatología de la Obesidad y Nutrición CB06/03/010, Girona, Spain. jmfreal@idibgi.org
Josep Puig
Marta Serrano
Mónica Sabater
Antoni Rubió
José María Moreno-Navarrete
Marina Fontan
Roser Casamitjana
Gemma Xifra
Francisco José Ortega
Javier Salvador
Gema Frühbeck
Wifredo Ricart
Institut d'Investigació Biomèdica de Girona · ESCentro de Investigación Biomédica en Red · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fibroblast growth factor 23 (FGF-23) is known to be produced by the bone and linked to metabolic risk. We aimed to explore circulating FGF-23 in association with fatness and insulin sensitivity, atherosclerosis and bone mineral density (BMD). Circulating intact FGF-23 (iFGF-23) and C-terminal (CtFGF-23) concentrations (ELISA) were measured in 133 middle aged men from the general population in association with insulin sensitivity (Cohort 1); and in association with fat mass and bone mineral density (DEXA) and atherosclerosis (intima media thickness, IMT) in 78 subjects (52 women) with a wide range of adiposity (Cohort 2). Circulating iFGF-23 was also measured before and after weight loss. In all subjects as a whole, serum intact and C-terminal concentrations were linearly and positively associated with BMI. In cohort 1, both serum iFGF-23 and CtFGF-23 concentrations increased with insulin resistance. Serum creatinine contributed to iFGF-23 variance, while serum ferritin and insulin sensitivity (but not BMI, age or serum creatinine) contributed to 17% of CtFGF-23 variance. In cohort 2, CtFGF-23 levels were higher in women vs. men, and increased with BMI, fat mass, fasting and post-load serum glucose, insulin, HOMA-IR and PTH, being negatively associated with circulating vitamin D and ferritin levels. The associations of CtFGF-23 with bone density in the radius, lumbar spine and carotid IMT were no longer significant after controlling for BMI. Weight loss led to decreased iFGF-23 concentrations. In summary, the associations of circulating FGF-23 concentration with parameters of glucose metabolism, bone density and atherosclerosis are dependent on iron and obesity status-associated insulin resistance.

Indexed as

Insulin ResistanceAdultBlood VesselsFerritinsFibroblast Growth Factor-23Fibroblast Growth FactorsGlucose Tolerance TestHumansIronMaleMiddle AgedObesityWeight LossFerritinsFGF23 protein, humanFibroblast Growth Factor-23Fibroblast Growth FactorsIron

Identifiers

PMID23555610
PMCPMC3605441
OpenAlexW2006777459

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.