Evidence map›Paper›PMID 30409184›Full record

Trial reportBMC nephrology2018

Fructose increases risk for kidney stones: potential role in metabolic syndrome and heat stress.

Richard J Johnson, Santos E Perez-Pozo, Julian Lopez Lillo, Felix Grases, Jesse D Schold, Masanari Kuwabara, Yuka Sato, Ana Andres Hernando, Gabriela Garcia, Thomas Jensen and 4 more

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in BMC nephrology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00639756 (Phase 2 Study to Determine if Allopurinol Blocks Features of Metabolic Syndrome Induced by Fructose Ingestion), which is not on this map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 6% 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.

NCT00639756 phase2completednot on this map

Phase 2 Study to Determine if Allopurinol Blocks Features of Metabolic Syndrome Induced by Fructose Ingestion

TypeinterventionalSponsorHospital Mateo OrfilaRan2008 to 2008Enrolled60ConditionsMetabolic SyndromeArmsAllopurinol, Placebo
3 · Its place in the literature

Who cites it

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Hydrating with a higher-fructose sport drink does not worsen acute kidney injury risk during simulated work-related heat stress.American journal of physiology. Regulatory, integrative and comparative physiology · 2026
    Trial
  3. Culinary Medicine for CKD.Clinical journal of the American Society of Nephrology : CJASN · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Oxalates: Dietary Oxalates and Kidney Inflammation: A Literature Review.Integrative medicine (Encinitas, Calif.) · 2024
    Review
  19. Article
  20. 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 7 institutions in 4 countries.

Richard J JohnsonDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA. richard.johnson@ucdenver.edu.ORCID 0000-0003-3312-8193
Santos E Perez-PozoDivision of Nephrology, Clinica San Felipe, Lima, Peru.
Julian Lopez LilloHospital Mateu Orfila, Menorca, Spain.
Felix GrasesIUNICS-Idisba, University of Balearic Islands, Palma de Mallorca, Spain.
Jesse D ScholdDepartment of Quantitative Health Sciences, Cleveland Clinic Foundation, Cleveland, OH, USA.
Masanari KuwabaraDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Yuka SatoDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Ana Andres HernandoDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Gabriela GarciaDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Thomas JensenDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Christopher RivardDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Laura G Sanchez-LozadaLaboratory of Renal Physiopathology, Instituto Nacional de Cardiología, Ignacio Chávez, Mexico City, Mexico.
Carlos RoncalDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
Miguel A LanaspaDivision of Renal Diseases and Hypertension, University of Colorado, Denver, CO, USA.
University of Colorado Denver · USCentro Peruano de Estudios Sociales · PECleveland Clinic · USHealth Research Institute of the Balearic Islands · ESHospital General Mateu Orfila · ESInstituto Nacional de Cardiología · MXVA Eastern Colorado Health Care System · US

Funding

PILOT STUDY--SUBSTRATE METABOLISM IN EXTREMELY LOW BIRTH WEIGHT INFANTSP30DK048520 · NIDDK · UNIVERSITY OF COLORADO DENVER · PI Wendy M Kohrt · 1995 to 2026
$32.6M
6 · The paper itself

Abstract

backgroundFructose intake, mainly as table sugar or high fructose corn syrup, has increased in recent decades and is associated with increased risk for kidney stones. We hypothesized that fructose intake alters serum and urinary components involved in stone formation.

methodsWe analyzed a previously published randomized controlled study that included 33 healthy male adults (40-65 years of age) who ingested 200 g of fructose (supplied in a 2-L volume of 10% fructose in water) daily for 2 weeks. Participants were evaluated at the Unit of Nephrology of the Mateo Orfila Hospital in Menorca. Changes in serum levels of magnesium, calcium, uric acid, phosphorus, vitamin D, and intact PTH levels were evaluated. Urine magnesium, calcium, uric acid, phosphorus, citrate, oxalate, sodium, potassium, as well as urinary pH, were measured.

resultsIngestion of fructose was associated with an increased serum level of uric acid (p < 0.001), a decrease in serum ionized calcium (p = 0.003) with a mild increase in PTH (p < 0.05) and a drop in urinary pH (p = 0.02), an increase in urine oxalate (p = 0.016) and decrease in urinary magnesium (p = 0.003).

conclusionsFructose appears to increase urinary stone formation in part via effects on urate metabolism and urinary pH, and also via effects on oxalate. Fructose may be a contributing factor for the development of kidney stones in subjects with metabolic syndrome and those suffering from heat stress.

trial registrationClinicalTrials.gov NCT00639756 March 20, 2008.

Indexed as

AdultAgedCalcium OxalateFructoseHeat-Shock ResponseHumansKidney CalculiMaleMetabolic SyndromeMiddle AgedRisk FactorsUric AcidCalcium OxalateFructoseUric AcidCitrateFructoseKidney stoneMagnesiumOxalateSucroseSugarUric acid

Identifiers

PMID30409184
PMCPMC6225702
OpenAlexW2899770715

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.