Evidence map›Paper›PMID 21248295›Full record

Trial reportNephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association2011

Associations of blood lead with estimated glomerular filtration rate using MDRD, CKD-EPI and serum cystatin C-based equations.

June T Spector, Ana Navas-Acien, Jeffrey Fadrowski, Eliseo Guallar, Bernard Jaar, Virginia M Weaver

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.1field-weighted citation impact, top 16% 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

16 citing papers in PubMed, 48 citations in OpenAlex.

  1. Observational
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Chronic Kidney Disease and Exposure to Nephrotoxic Metals.International journal of molecular sciences · 2017
    Review
  11. A review of toxicity and mechanisms of individual and mixtures of heavy metals in the environment.Environmental science and pollution research international · 2016
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

June T SpectorDepartment of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
Ana Navas-Acien
Jeffrey Fadrowski
Eliseo Guallar
Bernard Jaar
Virginia M Weaver
Johns Hopkins University · USUniversity of Washington · US

Funding

Targeted Research Training CoreT42OH008428 · OH · JOHNS HOPKINS UNIVERSITY · PI RAMACHANDRAN, GURUMURTHY · 2005 to 2025
$31.1M
Biostatistics, Epidemiologic & Bioinformatic Training in Environmental HealthT32ES015459 · NIEHS · UNIVERSITY OF WASHINGTON · PI June T. Spector · 2009 to 2026
$10.6M
Mechanisms for Adverse Renal Effects from Lead ExposureR01ES007198 · NIEHS · JOHNS HOPKINS UNIVERSITY · PI WEAVER, VIRGINIA M · 1997 to 2009
$3.1M
The association of lead and cadmium exposure with kidney function in childrenK23ES016514 · NIEHS · JOHNS HOPKINS UNIVERSITY · PI FADROWSKI, JEFFREY JOHN · 2007 to 2011
$783k
NIEHS NIH HHS 2 ES007198NIEHS NIH HHS 3 ES007198NIEHS NIH HHS 5T32ES015459-02NIEHS NIH HHS K23 ES016514NIEHS NIH HHS R01 ES007198NIEHS NIH HHS T32 ES015459NIOSH CDC HHS T42 OH008428
6 · The paper itself

Abstract

backgroundLow-level lead exposure is widespread and has been implicated as a chronic kidney disease (CKD) risk factor. However, studies evaluating associations of lead dose with newer, potentially more accurate, estimates of kidney function, in participants with a wide range of glomerular filtration rates (GFRs), are scarce.

methodsWe compared associations of blood lead and estimated glomerular filtration rate (eGFR) using the Modification of Diet in Renal Disease (MDRD), Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) and cystatin C single variable, multivariable and combined creatinine/cystatin C equations in 3941 adults who participated in the 1999-2002 National Health and Nutrition Examination Survey cystatin C subsample.

resultsGeometric mean blood lead was 1.7 μg/dL. After multivariable adjustment, differences [95% confidence interval (CI)] in mean eGFR for a doubling of blood lead were -1.9 (-3.2, -0.7), -1.7 (-3.0, -0.5) and -1.4 (-2.3, -0.5) mL/min/1.73 m(2), using the cystatin C single variable, multivariable and combined creatinine/cystatin C equations, respectively, reflecting lower eGFR with increased blood lead. The corresponding differences (95% CI) were -0.9 (-1.9, 0.02) and -0.9 (-1.8, 0.01) using the creatinine-based MDRD and CKD-EPI equations, respectively. In participants aged ≥60 years, differences in mean eGFR ranged from -3.0 to -4.5 mL/min/1.73 m(2), and odds of reduced eGFR (<60 mL/min/1.73 m(2)) were increased for all estimates of GFR.

conclusionsThese results support the inclusion of cystatin C-based eGFR in future lead research and provide additional evidence for environmental lead exposure as a CKD risk factor.

Indexed as

AlgorithmsDietGlomerular Filtration RateAdolescentAdultChildCreatinineCystatin CFemaleHumansKidney Failure, ChronicKidney Function TestsLeadMaleMiddle AgedNutrition SurveysCreatinineCystatin CLead

Identifiers

PMID21248295
PMCPMC3203408
OpenAlexW2006608594

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.