Evidence map›Paper›PMID 34923600›Full record

Trial reportInternational urology and nephrology2022

Gut microbiome in hemodialysis patients treated with calcium acetate or treated with sucroferric oxyhydroxide: a pilot study.

Ana Merino-Ribas, Ricardo Araujo, Ioana Bancu, Fredzzia Graterol, Andrea Vergara, Marc Noguera-Julian, Roger Paredes, Jordi Bonal, Benedita Sampaio-Maia

Open access · hybridAbstract readClinical TrialComparative Study
In one paragraph

Trial report in International urology and nephrology, 2022. 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
1.0field-weighted citation impact, top 24% 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, 11 citations in OpenAlex.

  1. Gut-kidney axis: Dysbiosis and renal disease.World journal of nephrology · 2026
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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

9 authors at 5 institutions in 2 countries.

Ana Merino-RibasUniversitat Autònoma de Barcelona, Barcelona, Spain. amerinor.girona.ics@gencat.cat.ORCID http://orcid.org/0000-0002-8322-4047
Ricardo Araujoi3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal.
Ioana BancuUniversitat Autònoma de Barcelona, Barcelona, Spain.
Fredzzia GraterolUniversitat Autònoma de Barcelona, Barcelona, Spain.
Andrea VergaraIrsiCaixa AIDS Research Institute, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
Marc Noguera-JulianIrsiCaixa AIDS Research Institute, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
Roger ParedesIrsiCaixa AIDS Research Institute, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
Jordi BonalNephrology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain.
Benedita Sampaio-Maiai3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal.
IrsiCaixa · ESUniversitat Autònoma de Barcelona · ESHospital Universitari Germans Trias i Pujol · ESi3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto · PTUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIt has been proved that the gut microbiome is altered in patients with chronic kidney disease. This contributes to chronic inflammation and increases cardiovascular risk and mortality, especially in those undergoing hemodialysis. Phosphate binders may potentially induce changes in their microbiome. This trial aimed to compare the changes in the gut microbiome of hemodialysis patients treated with calcium acetate to those treated with sucroferric oxyhydroxide.

methodsTwelve hemodialysis patients were distributed to receive calcium acetate or sucroferric oxyhydroxide for 5 months. Blood samples (for biochemical analysis) and stool samples (for microbiome analysis) were collected at baseline, 4, 12, and 20 weeks after treatment initiation. Fecal DNA was extracted and a 16S rRNA sequencing library was constructed targeting the V3 and V4 hypervariable regions.

resultsRegarding clinical variables and laboratory parameters, no statistically significant differences were observed between calcium acetate or sucroferric oxyhydroxide groups. When analyzing stool samples, we found that all patients were different (p = 0.001) among themselves and these differences were kept along the 20 weeks of treatment. The clustering analysis in microbial profiles grouped the samples of the same patient independently of the treatment followed and the stage of the treatment.

conclusionThese results suggest that a 5-month treatment with either calcium acetate or sucroferric oxyhydroxide did not modify baseline diversity or baseline bacterial composition in hemodialysis patients, also about the high-variability profiles of the gut microbiome found among these patients.

Indexed as

Gastrointestinal MicrobiomeHyperphosphatemiaAcetatesCalcium CompoundsDrug CombinationsFerric CompoundsHumansPilot ProjectsRenal DialysisRNA, Ribosomal, 16SSucroseAcetatescalcium acetateCalcium CompoundsDrug CombinationsFerric CompoundsRNA, Ribosomal, 16Ssucroferric oxyhydroxideSucroseCalcium acetateChronic kidney diseaseGut microbiomeHemodialysisPhosphate bindersSucroferric oxyhydroxide

Identifiers

PMID34923600
PMCPMC9262763
OpenAlexW4200405067

What Socratic 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 Socratic graph.