Evidence map›Paper›PMID 25135059›Full record

ArticleEuropean journal of clinical pharmacology2014

GFR may not accurately predict aspects of proximal tubule drug handling.

T L Putt, Stephen B Duffull, J B W Schollum, R J Walker

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In one paragraph

Article in European journal of clinical pharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 23% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. The intact nephron hypothesis as a model for renal drug handling.European journal of clinical pharmacology · 2019
    Pooled it
  2. Pharmacokinetics in children with chronic kidney disease.Pediatric nephrology (Berlin, Germany) · 2020
    Review
  3. Association of Serum Uromodulin With ESKD and Kidney Function Decline in the Elderly: The Cardiovascular Health Study.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2019
    Observational
  4. Article
  5. Article
  6. Article
  7. Article
  8. A Population Pharmacokinetic Model forClinical pharmacokinetics · 2017
    Article
  9. Article
  10. Development of an S-1 dosage formula based on renal function by a prospective pharmacokinetic study.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2016
    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

4 authors at 1 institution in 1 country.

T L PuttDepartment of Medicine, University of Otago, Dunedin, New Zealand.
Stephen B Duffull
J B W Schollum
R J Walker
University of Otago · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDose modification in renal impairment has traditionally been based on changes in estimated glomerular filtration rate (eGFR; estimated by creatinine clearance). However, many drugs are eliminated by tubular anionic and cationic transport where changes in eGFR may not necessarily reflect changes in tubular function. This study investigated the relationship between GFR and renal tubular function with reference to drug handling by using accepted drug probes.

methodsThree drug probes, (51)Cr-EDTA, fluconazole, and pindolol, were administered to patients who had varying degrees of renal impairment. Blood sampling, assays, and a pharmacokinetic analysis were performed for all drug probes and endogenous urate. Measured GFR ((51)Cr-EDTA clearance; mGFR) was compared to tubular anionic transport (urate clearance), tubular reabsorption (fluconazole clearance), and tubular cationic transport (S-pindolol clearance).

resultsA moderately strong association was demonstrated between the measured isotopic GFR and creatinine clearance (R(2) = 0.78). A moderate positive correlation was found between mGFR and proximal tubular anion transport and reabsorption (R(2) = 0.40-0.44, p < 0.0001). In contrast, cationic secretion correlated poorly with mGFR (R(2) = 0.11, p = 0.036).

conclusionsGiven that drug dosing schedules utilise eGFR values as the basis for modifying drug dosing, our results would suggest that a recommendation of a dose reduction according to eGFR alone should be treated with caution.

Indexed as

Glomerular Filtration RateAdultAgedAged, 80 and overBiological TransportDose-Response Relationship, DrugEdetic AcidFemaleFluconazoleHumansKidney Function TestsKidney Tubules, ProximalMaleMiddle AgedPindololRenal InsufficiencyEdetic AcidFluconazolePindolol

Identifiers

PMID25135059
OpenAlexW1982536422

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.