Evidence map›Paper›PMID 27444566›Full record

ArticleJournal of the American Society of Nephrology : JASN2016

Metabolic Profiling of Impaired Cognitive Function in Patients Receiving Dialysis.

Manjula Kurella Tamura, Glenn M Chertow, Thomas A Depner, Allen R Nissenson, Brigitte Schiller, Ravindra L Mehta, Sai Liu, Tammy L Sirich, FHN Study

Open access · bronzeAbstract read
In one paragraph

Article in Journal of the American Society of Nephrology : JASN, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 9% 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

46 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Cognitive Impairment in End Stage Renal Disease Patients Undergoing Hemodialysis: Markers and Risk Factors.International journal of environmental research and public health · 2022
    Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Uremic Toxins, CKD, and Cognitive Dysfunction.Journal of the American Society of Nephrology : JASN · 2025
    Review
  11. Article
  12. Genetic and circulating biomarkers of cognitive dysfunction and dementia in CKD.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2025
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Blood Pressure, Incident Cognitive Impairment, and Severity of CKD: Findings From the Chronic Renal Insufficiency Cohort (CRIC) Study.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2023
    Article
  19. Article
  20. 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

9 authors at 5 institutions in 1 country.

Manjula Kurella TamuraGeriatric Research and Education Clinical Center, Palo Alto Veterans Administration Health Care System, Palo Alto, California; mktamura@stanford.edu.
Glenn M ChertowDivision of Nephrology, Stanford University School of Medicine, Palo Alto, California.
Thomas A DepnerDivision of Nephrology, University of California Davis School of Medicine, Davis, California.
Allen R NissensonDavid Geffen School of Medicine, University of California Los Angeles, Los Angeles, California; and.
Brigitte SchillerDivision of Nephrology, Stanford University School of Medicine, Palo Alto, California.
Ravindra L MehtaDivision of Nephrology, University of California San Diego, San Diego, California.
Sai LiuDivision of Nephrology, Stanford University School of Medicine, Palo Alto, California.
Tammy L SirichGeriatric Research and Education Clinical Center, Palo Alto Veterans Administration Health Care System, Palo Alto, California.
FHN Study
Stanford University · USVA Palo Alto Health Care System · USUniversity of California, Davis · USUniversity of California, Los Angeles · USUniversity of California, San Diego · US

Funding

Mechanisms of Cognitive Impairment in Chronic Kidney DiseaseK23AG028952 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KURELLA TAMURA, MANJULA · 2007 to 2011
$860k
New Solutes to Assess Kidney DiseaseIK2CX001036 · VA · VETERANS ADMIN PALO ALTO HEALTH CARE SYS · PI SIRICH, TAMMY LISA · 2014 to 2018
–
CSRD VA IK2 CX001036NIA NIH HHS K23 AG028952
6 · The paper itself

Abstract

Retention of uremic metabolites is a proposed cause of cognitive impairment in patients with ESRD. We used metabolic profiling to identify and validate uremic metabolites associated with impairment in executive function in two cohorts of patients receiving maintenance dialysis. We performed metabolic profiling using liquid chromatography/mass spectrometry applied to predialysis plasma samples from a discovery cohort of 141 patients and an independent replication cohort of 180 patients participating in a trial of frequent hemodialysis. We assessed executive function with the Trail Making Test Part B and the Digit Symbol Substitution test. Impaired executive function was defined as a score ≥2 SDs below normative values. Four metabolites-4-hydroxyphenylacetate, phenylacetylglutamine, hippurate, and prolyl-hydroxyproline-were associated with impaired executive function at the false-detection rate significance threshold. After adjustment for demographic and clinical characteristics, the associations remained statistically significant: relative risk 1.16 (95% confidence interval [95% CI], 1.03 to 1.32), 1.39 (95% CI, 1.13 to 1.71), 1.24 (95% CI, 1.03 to 1.50), and 1.20 (95% CI, 1.05 to 1.38) for each SD increase in 4-hydroxyphenylacetate, phenylacetylglutamine, hippurate, and prolyl-hydroxyproline, respectively. The association between 4-hydroxyphenylacetate and impaired executive function was replicated in the second cohort (relative risk 1.12; 95% CI, 1.02 to 1.23), whereas the associations for phenylacetylglutamine, hippurate, and prolyl-hydroxyproline did not reach statistical significance in this cohort. In summary, four metabolites related to phenylalanine, benzoate, and glutamate metabolism may be markers of cognitive impairment in patients receiving maintenance dialysis.

Indexed as

Renal DialysisCognition DisordersFemaleHumansKidney Failure, ChronicMaleMetabolomicsMiddle Agedcognitive functiondialysisESRDmetabolism

Identifiers

PMID27444566
PMCPMC5118491
OpenAlexW2483224146

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.