Evidence mapPaperPMID 32654577Full record

ArticleRenal failure2020

Inquiry into the short- and long-term effects of Roux-en-Y gastric bypass on the glomerular filtration rate.

Allon N Friedman, Robert V Considine, Sara K Quinney

Open access · goldAbstract read
In one paragraph

Article in Renal failure, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.0field-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

3 citing papers in PubMed, 6 citations in OpenAlex.

  1. Measurement, Estimation, and Correlates of the GFR before and after Bariatric Surgery.Journal of the American Society of Nephrology : JASN · 2026
    Article
  2. Review
  3. Management of Obesity in Adults with CKD.Journal of the American Society of Nephrology : JASN · 2021
    Review
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

3 authors at 1 institution in 1 country.

Allon N FriedmanDepartment of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
Robert V ConsidineDepartment of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
Sara K QuinneyDepartment of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.ORCID https://orcid.org/0000-0002-6554-0695
Indiana University School of Medicine

Funding

Translation CoreP30DK097512 · INDIANA UNIVERSITY INDIANAPOLIS · 2025 to 2025
$1.7M
NIDDK NIH HHS P30 DK097512
6 · The paper itself

Abstract

Bariatric surgery is known to attenuate glomerular hyperfiltration over the long term and thereby protect the kidney from mechanical damage. Whether this effect is directly related to weight loss or is independent of weight as are some of its other beneficial metabolic effects is not known. We explored this question in a preliminary study that directly measured glomerular filtration rate (GFR) before, immediately after, and again many months after Roux-en-Y gastric bypass after large weight loss had occurred. We simultaneously measured stimulated circulating glucagon-like peptide-1, which is upregulated after Roux-en-Y gastric bypass and is a putative mediator of GFR after bariatric surgery. We found no weight-independent effect of Roux-en-Y gastric bypass on GFR nor an association between circulating GLP-1 levels and GFR. These findings, if confirmed in larger studies, will help steer future enquiries in this area.

Indexed as

Gastric BypassGlomerular Filtration RateBiomarkersBody Mass IndexFemaleGlucagon-Like Peptide 1HumansKidneyMiddle AgedObesity, MorbidWeight LossBiomarkersGlucagon-Like Peptide 1Bariatric surgeryGFRglomerular filtration rateGLP-1glucagon like-peptide 1obesityRoux-en Y gastric bypassweight

Identifiers

PMID32654577
PMCPMC7470048
OpenAlexW3042717130

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.