Evidence map›Paper›PMID 33498560›Full record

ArticleNutrients2021

Assessment of Inorganic Phosphate Intake by the Measurement of the Phosphate/Urea Nitrogen Ratio in Urine.

María Victoria Pendón-Ruiz de Mier, Noemí Vergara, Cristian Rodelo-Haad, María Dolores López-Zamorano, Cristina Membrives-González, Rodrigo López-Baltanás, Juan Rafael Muñoz-Castañeda, Francisco Caravaca, Alejandro Martín-Malo, Arnold J Felsenfeld and 4 more

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

10 citing papers in PubMed, 16 citations in OpenAlex.

  1. Trial
  2. Phosphate and Inflammation in Health and Kidney Disease.International journal of molecular sciences · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. The basics of phosphate metabolism.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2024
    Review
  9. Article
  10. Review
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

14 authors at 5 institutions in 2 countries.

María Victoria Pendón-Ruiz de MierMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Noemí VergaraMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Cristian Rodelo-HaadMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.ORCID 0000-0002-8139-3840
María Dolores López-ZamoranoNephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Cristina Membrives-GonzálezMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Rodrigo López-BaltanásMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Juan Rafael Muñoz-CastañedaMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.ORCID 0000-0002-9341-0724
Francisco CaravacaNephrology Service, Infanta Cristina Hospital, 06080 Badajoz, Spain.
Alejandro Martín-MaloMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.ORCID 0000-0002-8010-7187
Arnold J FelsenfeldDepartment of Medicine, Veterans Affairs Greater Los Angeles Healthcare System and the David Geffen School of Medicine, University of California, Los Angeles, CA 90073, USA.
Eugenio J De la TorreGeneral Medicine, Miguelturra Clinic, 13170 Miguelturra/Ciudad Real, Spain.
Sagrario SorianoMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Rafael SantamaríaMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.ORCID 0000-0002-2627-1445
Mariano RodríguezMaimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Nephrology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain.
Instituto de Salud Carlos III · ESInstituto Maimónides de Investigación Biomédica de Córdoba · ESHospital Universitario Infanta Cristina · ESHospital Universitario Reina Sofía · ESUniversity of California, Los Angeles · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In chronic kidney disease (CKD) patients, it would be desirable to reduce the intake of inorganic phosphate (P) rather than limit the intake of P contained in proteins. Urinary excretion of P should reflect intestinal absorption of P(inorganic plus protein-derived). The aim of the present study is to determine whether the ratio of urinary P to urinary urea nitrogen (P/UUN ratio) helps identify patients with a high intake of inorganic P.A cross-sectional study was performed in 71 patients affected by metabolic syndrome with CKD (stages 2-3) with normal serum P concentration. A 3-day dietary survey was performed to estimate the average daily amount and the source of P ingested. The daily intake ofPwas1086.5 ± 361.3mg/day; 64% contained in animal proteins, 22% in vegetable proteins, and 14% as inorganic P. The total amount of P ingested did not correlate with daily phosphaturia, but it did correlate with the P/UUN ratio (

Indexed as

DietEatingAdultAgedAnimalsCross-Sectional StudiesFemaleFibroblast Growth Factor-23HumansMaleMiddle AgedPhosphatesRatsRats, WistarUreaFGF23 protein, humanFibroblast Growth Factor-23PhosphatesUreaCKDFGF23phosphate intakephosphaturiaPTH

Identifiers

PMID33498560
PMCPMC7909516
OpenAlexW3124830816

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.