Evidence map›Paper›PMID 19401424›Full record

ArticleDiabetes2009

Lack of type VIII collagen in mice ameliorates diabetic nephropathy.

Ulrike Hopfer, Helmut Hopfer, Catherine Meyer-Schwesinger, Ivonne Loeffler, Naomi Fukai, Bjorn R Olsen, Rolf A K Stahl, Gunter Wolf

Open access · hybridAbstract read
In one paragraph

Article in Diabetes, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 17% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Type VIII collagen: advances in matrix biology and translational promise.Frontiers in bioengineering and biotechnology · 2025
    Pooled it
  2. Article
  3. Article
  4. Collagen VIII in vascular diseases.Matrix biology : journal of the International Society for Matrix Biology · 2024
    Review
  5. The Role of Collagen VIII in the Aging Mouse Kidney.International journal of molecular sciences · 2024
    Article
  6. The complex pathology of diabetic nephropathy in humans.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2023
    Review
  7. Article
  8. COL8A2 Regulates the Fate of Corneal Endothelial Cells.Investigative ophthalmology & visual science · 2020
    Article
  9. Role of pannexin 1 channels in load-induced skeletal response.Annals of the New York Academy of Sciences · 2019
    Article
  10. Article
  11. Article
  12. Article
  13. Pathophysiology of the diabetic kidney.Comprehensive Physiology · 2011
    Review
  14. Type VIII collagen modulates TGF-β1-induced proliferation of mesangial cells.Journal of the American Society of Nephrology : JASN · 2011
    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

8 authors at 3 institutions in 2 countries.

Ulrike HopferDepartment of Medicine, University of Hamburg, Hamburg, Germany. ulrike.hopfer@unibas.ch
Helmut Hopfer
Catherine Meyer-Schwesinger
Ivonne Loeffler
Naomi Fukai
Bjorn R Olsen
Rolf A K Stahl
Gunter Wolf
Universität Hamburg · DEFriedrich Schiller University Jena · DEHarvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveKey features of diabetic nephropathy include the accumulation of extracellular matrix proteins. In recent studies, increased expression of type VIII collagen in the glomeruli and tubulointerstitium of diabetic kidneys has been noted. The objectives of this study were to assess whether type VIII collagen affects the development of diabetic nephropathy and to determine type VIII collagen-dependent pathways in diabetic nephropathy in the mouse model of streptozotocin (STZ)-induced diabetes. RESEARCH DESIGN AND

methodsDiabetes was induced by STZ injections in collagen VIII-deficient or wild-type mice. Functional and histological analyses were performed 40 days after induction of diabetes. Type VIII collagen expression was assessed by Northern blots, immunohistochemistry, and real-time PCR. Proliferation of primary mesangial cells was measured by thymidine incorporation and direct cell counting. Expression of phosphorylated extracellular signal-regulated kinase (ERK1/2) and p27(Kip1) was assessed by Western blots. Finally, Col8a1 was stably overexpressed in mesangial cells.

resultsDiabetic wild-type mice showed a strong renal induction of type VIII collagen. Diabetic Col8a1(-)/Col8a2(-) animals revealed reduced mesangial expansion and cellularity and extracellular matrix expansion compared with the wild type. These were associated with less albuminuria. High-glucose medium as well as various cytokines induced Col8a1 in cultured mesangial cells. Col8a1(-)/Col8a2(-) mesangial cells revealed decreased proliferation, less phosphorylation of Erk1/2, and increased p27(Kip1) expression. Overexpression of Col8a1 in mesangial cells induced proliferation.

conclusionsLack of type VIII collagen confers renoprotection in diabetic nephropathy. One possible mechanism is that type VIII collagen permits and/or fosters mesangial cell proliferation in early diabetic nephropathy.

Indexed as

AnimalsCell DivisionCollagen Type VIIIDiabetes Mellitus, ExperimentalDiabetic NephropathiesDNA PrimersGlomerular MesangiumMaleMiceMice, KnockoutPolymerase Chain ReactionRNACol8a2 protein, mouseCollagen Type VIIIDNA PrimersRNA

Identifiers

PMID19401424
PMCPMC2699847
OpenAlexW2126528631

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.