Evidence map›Paper›PMID 23636170›Full record

ArticleKidney international2013

Numerous protein-bound solutes are cleared by the kidney with high efficiency.

Tammy L Sirich, Pavel A Aronov, Natalie S Plummer, Thomas H Hostetter, Timothy W Meyer

Open access · greenAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Kidney international, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 3 pooled it
3.1field-weighted citation impact, top 8% 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

74 citing papers in PubMed, 3 syntheses or guidelines pooled it, 132 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Contribution of 'clinically negligible' residual kidney function to clearance of uremic solutes.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2020
    Trial
  6. Effect of increasing dietary fiber on plasma levels of colon-derived solutes in hemodialysis patients.Clinical journal of the American Society of Nephrology : CJASN · 2014
    Trial
  7. Article
  8. Kidney Tubule Secretion and AKI After Cardiac Surgery.Kidney international reports · 2026
    Article
  9. Kidney Tubule Secretion Can Discriminate the Cause of Acute Kidney Injury in Cirrhosis.Clinical journal of the American Society of Nephrology : CJASN · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Observational
  18. Review
  19. Review
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14 more citing papers are in PubMed but not listed here.

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 3 institutions in 1 country.

Tammy L SirichDepartment of Medicine, VA Palo Alto HCS, Palo Alto, California 94303, USA. tsirich@stanford.edu
Pavel A Aronov
Natalie S Plummer
Thomas H Hostetter
Timothy W Meyer
Stanford University · USCase Western Reserve University · USVA Palo Alto Health Care System · US

Funding

TRAINING PROGRAM IN ACADEMIC NEPHROLOGYT32DK007357 · NIDDK · STANFORD UNIVERSITY · PI CHERTOW, GLENN MATTHEW · 1986 to 2022
$4.8M
Retained Organic Solutes and Clinical Outcomes in HemodialysisR01DK080123 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI POWE, NEIL R. · 2008 to 2012
$3.2M
The Production of Uremic Solutes by Colon MicrobesR21DK084439 · NIDDK · PALO ALTO VETERANS INSTIT FOR RESEARCH · PI MEYER, TIMOTHY W · 2009 to 2010
$406k
NIDDK NIH HHS R01 DK080123NIDDK NIH HHS R01 DK80123NIDDK NIH HHS R01DK80123NIDDK NIH HHS R21 DK084439NIDDK NIH HHS R21DK84439NIDDK NIH HHS T32 DK007357
6 · The paper itself

Abstract

The kidney clears numerous solutes from the plasma; however, retention of these solutes causes uremic illness when the kidneys fail. We know remarkably little about which retained solutes are toxic and this limits our ability to improve dialysis therapies. To explore this, we employed untargeted mass spectrometry to identify solutes that are efficiently cleared by the kidney. High-resolution mass spectrometry detected 1808 features in the urine and plasma ultrafiltrate of 5 individuals with normal renal function. The estimated clearance rates of 1082 peaks were greater than the creatinine clearance indicating tubular secretion. Further analysis identified 90 features representing solutes with estimated clearance rates greater than the renal plasma flow. Quantitative mass spectrometry with stable isotope dilution confirmed that efficient clearance of these solutes is made possible by the combination of binding to plasma proteins and tubular secretion. Tandem mass spectrometry established the chemical identity of 13 solutes including hippuric acid, indoxyl sulfate, and p-cresol sulfate. These 13 efficiently cleared solutes were found to accumulate in the plasma of hemodialysis patients, with free levels rising to more than 20-fold normal for all but two of them. Thus, further analysis of solutes efficiently cleared by secretion in the native kidney may provide a potential route to the identification of uremic toxins.

Indexed as

AdultAgedAged, 80 and overChromatography, LiquidCresolsFemaleHippuratesHumansIndicanKidneyKidney DiseasesMaleMetabolic Clearance RateMiddle AgedProtein BindingRenal Dialysis4-cresol sulfateCresolsHippurateshippuric acidIndicanSulfuric Acid Esters

Identifiers

PMID23636170
PMCPMC3758437
OpenAlexW2066760067

What OpenQuestion holds

Textmetadata
LicenceTDM
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.