Evidence map›Paper›PMID 38796538›Full record

ArticleScientific reports2024

Establishment of an artificial urine model in vitro and rat or pig model in vivo to evaluate urinary crystal adherence.

Kana Hayashi, Katsumi Shigemura, Hiroshi Tanimoto, Kazuo Kumagai, Ralph Rolly Gonzales, Young-Min Yang, Koki Maeda, Hideto Matsuyama, Masato Fujisawa

Erratum issuedAbstract read
In one paragraph

Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Review
  2. Optimal artificial urine formulations forFrontiers in urology · 2026
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Kana HayashiDivision of Infectious Diseases, Department of Public Health, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka Suma-Ku, Kobe, 654-0142, Japan.
Katsumi ShigemuraDepartment of Urology, Teikyo University Graduate School of Medicine, 2-11-1 Kaga, Itabashi-Ku, Tokyo, 173-8605, Japan. shigemura.katsumi.up@teikyo-u.ac.jp.
Hiroshi TanimotoDivision of Infectious Diseases, Department of Public Health, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka Suma-Ku, Kobe, 654-0142, Japan.
Kazuo KumagaiResearch Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada-Ku, Kobe, 657-8501, Japan.
Ralph Rolly GonzalesResearch Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada-Ku, Kobe, 657-8501, Japan.
Young-Min YangDivision of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-Ku, Kobe, 650-0017, Japan.
Koki MaedaDivision of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-Ku, Kobe, 650-0017, Japan.
Hideto MatsuyamaResearch Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada-Ku, Kobe, 657-8501, Japan.
Masato FujisawaDivision of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-Ku, Kobe, 650-0017, Japan.

Funding

a Grant-in-Aid for Research Activity Start-up from the Japan Society for the Promotion of Science (JSPS) 20K22979AMED 23ym0126805j0002Suzuken Memorial Foundation 20-014
6 · The paper itself

Abstract

The current study aimed to establish an experimental model in vitro and in vivo of urinary crystal deposition on the surface of ureteral stents, to evaluate the ability to prevent crystal adhesion. Non-treated ureteral stents were placed in artificial urine under various conditions in vitro. In vivo, ethylene glycol and hydroxyproline were administered orally to rats and pigs, and urinary crystals and urinary Ca were investigated by Inductively Coupled Plasma-Optical Emission Spectrometer. in vitro, during the 3- and 4-week immersion periods, more crystals adhered to the ureteral stent in artificial urine model 1 than the other artificial urine models (p < 0.01). Comparing the presence or absence of urea in the composition of the artificial urine, the artificial urine without urea showed less variability in pH change and more crystal adhesion (p < 0.05). Starting the experiment at pH 6.3 resulted in the highest amount of crystal adhesion to the ureteral stent (p < 0.05). In vivo, urinary crystals and urinary Ca increased in rat and pig experimental models. This experimental model in vitro and in vivo can be used to evaluate the ability to prevent crystal adhesion and deposition in the development of new ureteral stents to reduce ureteral stent-related side effects in patients.

Indexed as

StentsAnimalsCalciumCrystallizationEthylene GlycolHydrogen-Ion ConcentrationHydroxyprolineMaleRatsRats, Sprague-DawleySwineUreterUrineCalciumEthylene GlycolHydroxyproline

Identifiers

PMID38796538
PMCPMC11127959

What OpenQuestion holds

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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.