Evidence map›Paper›PMID 23024163›Full record

ArticleClinical journal of the American Society of Nephrology : CJASN2012

Response to dietary oxalate after bariatric surgery.

Leila Froeder, Carlos Haruo Arasaki, Carlos Alberto Malheiros, Alessandra Calábria Baxmann, Ita Pfeferman Heilberg

Open access · greenAbstract read
In one paragraph

Article in Clinical journal of the American Society of Nephrology : CJASN, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.9field-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.

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

27 citing papers in PubMed, 52 citations in OpenAlex.

  1. Review
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  9. Review
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  11. Article
  12. Oxalobacter formigenes colonization normalizes oxalate excretion in a gastric bypass model of hyperoxaluria.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2017
    Article
  13. Review
  14. Kidney Stones After Bariatric Surgery: Risk Assessment and Mitigation.Bariatric surgical practice and patient care · 2017
    Review
  15. Article
  16. Review
  17. Review
  18. Review
  19. Review
  20. Kidney stone risk following Roux-en-Y gastric bypass surgery.Translational andrology and urology · 2014
    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

5 authors at 1 institution in 1 country.

Leila FroederNephrology Division, Federal University of São Paulo, São Paulo, Brazil.
Carlos Haruo Arasaki
Carlos Alberto Malheiros
Alessandra Calábria Baxmann
Ita Pfeferman Heilberg
Universidade Federal de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesBariatric surgery (BS) may be associated with increased oxalate excretion and a higher risk of nephrolithiasis. This study aimed to investigate urinary abnormalities and responses to an acute oxalate load as an indirect assessment of the intestinal absorption of oxalate in this population. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Twenty-four-hour urine specimens were collected from 61 patients a median of 48 months after BS (post-BS) as well as from 30 morbidly obese (MO) participants; dietary information was obtained through 24-hour food recalls. An oral oxalate load test (OLT), consisting of 2-hour urine samples after overnight fasting and 2, 4, and 6 hours after consuming 375 mg of oxalate (spinach juice), was performed on 21 MO and 22 post-BS patients 12 months after BS. Ten post-BS patients also underwent OLT before surgery (pre-BS).

resultsThere was a higher percentage of low urinary volume (<1.5 L/d) in post-BS versus MO (P<0.001). Hypocitraturia and hyperoxaluria (P=0.13 and P=0.36, respectively) were more frequent in BS versus MO patients. The OLT showed intragroup (P<0.001 for all periods versus baseline) and intergroup differences (P<0.001 for post-BS versus MO; P=0.03 for post-BS versus pre-BS). The total mean increment in oxaluria after 6 hours of load, expressed as area under the curve, was higher in both post-BS versus MO and in post-BS versus pre-BS participants (P<0.001 for both).

conclusionsThe mean oxaluric response to an oxalate load is markedly elevated in post-bariatric surgery patients, suggesting that increased intestinal absorption of dietary oxalate is a predisposing mechanism for enteric hyperoxaluria.

Indexed as

AdultAnalysis of VarianceBariatric SurgeryCalciumChi-Square DistributionCitratesCreatinineFemaleHumansHyperoxaluriaIntestinal AbsorptionMagnesiumMaleMiddle AgedObesity, MorbidOxalatesCalciumCitratesCreatinineMagnesiumOxalatesUreaUric Acid

Identifiers

PMID23024163
PMCPMC3513742
OpenAlexW2117642327

What OpenQuestion holds

Textmetadata
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.