Evidence map›Paper›PMID 34231328›Full record

ArticlePhysiological reports2021

Evidence for abnormal linkage between urine oxalate and citrate excretion in human kidney stone formers.

Megan L Prochaska, Orson W Moe, John R Asplin, Fredric L Coe, Elaine M Worcester

Open access · goldAbstract read
In one paragraph

Article in Physiological reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Megan L ProchaskaDepartment of Medicine, University of Chicago Medicine, Chicago, IL, USA.ORCID 0000-0001-9207-5971
Orson W MoeDepartment of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
John R AsplinLitholink Corporation, Laboratory Corporation of America® Holdings, Itasca, IL, USA.
Fredric L CoeDepartment of Medicine, University of Chicago Medicine, Chicago, IL, USA.
Elaine M WorcesterDepartment of Medicine, University of Chicago Medicine, Chicago, IL, USA.ORCID 0000-0001-7989-2061
University of Chicago · USLink Foundation · USThe University of Texas Southwestern Medical Center · US

Funding

STONE FORMATION IN GENETIC HYPERCALCIURIAP01DK056788 · NIDDK · UNIVERSITY OF CHICAGO · PI ASHKAR, TAREK MAURICE · 2000 to 2021
$22.5M
Institutional Career Development Core (Chapter 1)KL2TR002387 · NCATS · UNIVERSITY OF CHICAGO · PI ERIC C BEYER, Lisa L Barnes · 2017 to 2026
$7.6M
NCATS NIH HHS KL2 TR002387NIDDK NIH HHS P01 DK056788
6 · The paper itself

Abstract

backgroundAnimal models have demonstrated an interactive relationship between the epithelial anion exchanger SLC26A6 and transporter NaDC-1 that regulates citrate and oxalate homeostasis. This relationship is a potential mechanism to protect against kidney stones as higher urine oxalate is accompanied by higher urine citrate but it has not been explored in humans.

methodsWe examined 24-h urine data on 13,155 kidney stone forming patients (SF) from separate datasets at the University of Chicago and Litholink, a national laboratory, and 143 non-kidney stone forming participants (NSF) to examine this relationship in humans. We used multivariate linear regression models to examine the association between oxalate and citrate in all study participants and separately in SF and NSF.

resultsHigher urinary oxalate was associated with higher urinary citrate in both SF and NSF. In NSF, the multivariate adjusted urine citrate excretion was 3.0 (1.5-4.6) (mmol)/creatinine (mmol) per oxalate (mmol)/creatinine (mmol). In SF, the multivariate adjusted urine citrate excretion was 0.3 (0.2-0.4) (mmol)/creatinine (mmol) per oxalate (mmol)/creatinine (mmol).

conclusionsHigher urinary oxalate excretion was associated with higher urinary citrate excretion and this effect was larger in non-kidney stone forming participants compared with those who form kidney stones.

Indexed as

Case-Control StudiesCitric AcidCreatinineFemaleHumansKidney CalculiLinear ModelsMaleMiddle AgedOxalatesCitric AcidCreatinineOxalatescalcium oxalatecitratenephrolithiasisoxalate

Identifiers

PMID34231328
PMCPMC9814525
OpenAlexW3178627247

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Registered trials

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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.