Evidence map›Paper›PMID 28754557›Full record

ArticleKidney international2017

Accelerated podocyte detachment and progressive podocyte loss from glomeruli with age in Alport Syndrome.

Fangrui Ding, Larysa Wickman, Su Q Wang, Yanqin Zhang, Fang Wang, Farsad Afshinnia, Jeffrey Hodgin, Jie Ding, Roger C Wiggins

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Kidney international, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

55 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.

  1. Pooled it
  2. New therapeutic hope for rare podocytopathies.Pediatric nephrology (Berlin, Germany) · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. WNK1 Kinase Activity Is Required for the Functional Maintenance of Podocyte Structure.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Increased urinary podocyte mRNA loss in healthy early-term infants.Pediatric nephrology (Berlin, Germany) · 2025
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Review
  20. 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

9 authors at 2 institutions in 2 countries.

Fangrui DingDepartment of Pediatrics, Peking University First Hospital, Beijing, China.
Larysa WickmanDepartment of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan, USA.
Su Q WangDepartment of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.
Yanqin ZhangDepartment of Pediatrics, Peking University First Hospital, Beijing, China.
Fang WangDepartment of Pediatrics, Peking University First Hospital, Beijing, China.
Farsad AfshinniaDepartment of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.
Jeffrey HodginDepartment of Pathology, University of Michigan, Ann Arbor, Michigan, USA.
Jie DingDepartment of Pediatrics, Peking University First Hospital, Beijing, China. Electronic address: djnc_5855@126.com.
Roger C WigginsDepartment of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA. Electronic address: rwiggins@umich.edu.
University of Michigan · USPeking University · CN

Funding

The Glomerular PodocyteR01DK046073 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WIGGINS, ROGER CHARLES · 1993 to 2015
$4.7M
Prognostic Biomarkers in Chronic Kidney DiseaseK08DK106523 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI AFSHINNIA, FARSAD · 2015 to 2019
$789k
Podocyte Markers in Human Glomerular DiseasesR01DK102643 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WIGGINS, ROGER CHARLES · 2015 to 2017
$698k
NIDDK NIH HHS K08 DK106523NIDDK NIH HHS R01 DK046073NIDDK NIH HHS R01 DK102643
6 · The paper itself

Abstract

Podocyte depletion is a common mechanism driving progression in glomerular diseases. Alport Syndrome glomerulopathy, caused by defective α3α4α5 (IV) collagen heterotrimer production by podocytes, is associated with an increased rate of podocyte detachment detectable in urine and reduced glomerular podocyte number suggesting that defective podocyte adherence to the glomerular basement membrane might play a role in driving progression. Here a genetically phenotyped Alport Syndrome cohort of 95 individuals [urine study] and 41 archived biopsies [biopsy study] were used to test this hypothesis. Podocyte detachment rate (measured by podocin mRNA in urine pellets expressed either per creatinine or 24-hour excretion) was significantly increased 11-fold above control, and prior to a detectably increased proteinuria or microalbuminuria. In parallel, Alport Syndrome glomeruli lose an average 26 podocytes per year versus control glomeruli that lose 2.3 podocytes per year, an 11-fold difference corresponding to the increased urine podocyte detachment rate. Podocyte number per glomerulus in Alport Syndrome biopsies is projected to be normal at birth (558/glomerulus) but accelerated podocyte loss was projected to cause end-stage kidney disease by about 22 years. Biopsy data from two independent cohorts showed a similar estimated glomerular podocyte loss rate comparable to the measured 11-fold increase in podocyte detachment rate. Reduction in podocyte number and density in biopsies correlated with proteinuria, glomerulosclerosis, and reduced renal function. Thus, the podocyte detachment rate appears to be increased from birth in Alport Syndrome, drives the progression process, and could potentially help predict time to end-stage kidney disease and response to treatment.

Indexed as

AdolescentAge FactorsBiopsyCell CountChildChild, PreschoolCohort StudiesCreatinineDisease ProgressionFemaleGlomerular Basement MembraneHumansIntracellular Signaling Peptides and ProteinsKidney Failure, ChronicMaleMembrane ProteinsCreatinineIntracellular Signaling Peptides and ProteinsMembrane ProteinsNPHS2 proteinRNA, MessengerAlport syndromepodocytepodometricsprogression

Identifiers

PMID28754557
PMCPMC5696060
OpenAlexW2739027167

What OpenQuestion holds

Textmetadata
LicenceTDM
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.