Evidence map›Paper›PMID 22096037›Full record

ArticleClinical journal of the American Society of Nephrology : CJASN2012

Timing and determinants of erythropoietin deficiency in chronic kidney disease.

Lucile Mercadal, Marie Metzger, Nicole Casadevall, Jean Philippe Haymann, Alexandre Karras, Jean-Jacques Boffa, Martin Flamant, François Vrtovsnik, Bénédicte Stengel, Marc Froissart and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Clinical journal of the American Society of Nephrology : CJASN, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Indoxyl sulfate impairsExperimental biology and medicine (Maywood, N.J.) · 2022
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Observational
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

11 authors at 4 institutions in 1 country.

Lucile MercadalINSERM, CESP Centrefor Research inEpidemiology and Population Health, U1018, Epidemiology of Diabetes, Obesity, and Kidney DiseasesTeam, Villejuif, France. lucile.mercadal@inserm.fr
Marie Metzger
Nicole Casadevall
Jean Philippe Haymann
Alexandre Karras
Jean-Jacques Boffa
Martin Flamant
François Vrtovsnik
Bénédicte Stengel
Marc Froissart
NephroTest Study Group
Inserm · FRSorbonne Université · FRUniversité Paris-Sud · FRDélégation Paris 5 · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesAnemia in patients with CKD is highly related to impaired erythropoietin (EPO) response, the timing and determinants of which remain unknown. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study measured EPO levels and studied their relation to GFR measured by 51Cr-EDTA renal clearance (mGFR) in 336 all-stage CKD patients not receiving any erythropoiesis-stimulating agent.

resultsIn patients with anemia defined by World Health Organization criteria (hemoglobin [Hb] <13 g/dl in men and 12 g/dl in women), EPO response to Hb level varied by mGFR level. EPO and Hb levels were negatively correlated (r=-0.22, P=0.04) when mGFR was >30 ml/min per 1.73 m(2), whereas they were not correlated when mGFR was <30 (r=0.09, P=0.3; P for interaction=0.01). In patients with anemia, the ratio of observed EPO to the level predicted by the equation for their Hb level decreased from 0.72 (interquartile range, 0.57-0.95) for mGFR ≥60 ml/min per 1.73 m(2) to 0.36 (interquartile range, 0.16-0.69) for mGFR <15. Obesity, diabetes with nephropathy other than diabetic glomerulopathy, absolute iron deficiency, and high C-reactive protein concentrations were associated with increased EPO levels, independent of Hb and mGFR.

conclusionsAnemia in CKD is marked by an early relative EPO deficiency, but several factors besides Hb may persistently stimulate EPO synthesis. Although EPO deficiency is likely the main determinant of anemia in patients with advanced CKD, the presence of anemia in those with mGFR >30 ml/min per 1.73 m(2) calls for other explanatory factors.

Indexed as

AdultAgedChronic DiseaseErythropoietinFemaleGlomerular Filtration RateHemoglobinsHumansKidney DiseasesMaleMiddle AgedMultivariate AnalysisTime FactorsErythropoietinHemoglobins

Identifiers

PMID22096037
PMCPMC3265349
OpenAlexW2146878735

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.