Evidence map›Paper›PMID 23644284›Full record

ArticleExperimental neurology2013

Limited regeneration in long acellular nerve allografts is associated with increased Schwann cell senescence.

Maryam Saheb-Al-Zamani, Ying Yan, Scott J Farber, Daniel A Hunter, Piyaraj Newton, Matthew D Wood, Sheila A Stewart, Philip J Johnson, Susan E Mackinnon

Open access · greenAbstract read
In one paragraph

Article in Experimental neurology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 4% 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

106 citing papers in PubMed, 1 synthesis or guideline pooled it, 212 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Special Issue "Plasticity of the Nervous System After Injury: 2nd Edition".International journal of molecular sciences · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Article
  19. Review
  20. Review

46 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Maryam Saheb-Al-Zamani *Division of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Ying Yan *Division of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Scott J FarberDivision of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Daniel A HunterDivision of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Piyaraj NewtonDivision of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Matthew D WoodDivision of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Sheila A StewartDepartment of Cell Biology and Physiology, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8228, St. Louis, MO 63110, USA.
Philip J JohnsonDivision of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Susan E MackinnonDivision of Plastic and Reconstructive Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8238, St. Louis, MO 63110, USA.
Washington University in St. Louis · US

Funding

NERVE ALLOTRANSPLANTATION FOR TRAUMATIC NERVE INJURYR01NS033406 · NINDS · WASHINGTON UNIVERSITY · PI MACKINNON, SUSAN E · 1994 to 2011
$5.3M
NERVE ALLOTRANSPLANTATION FOR TRAUMATIC NERVE INJURYR56NS033406 · NINDS · WASHINGTON UNIVERSITY · PI MACKINNON, SUSAN E, STEWART, SHEILA A · 2012 to 2012
$532k
NINDS NIH HHS R01 NS033406NINDS NIH HHS R01NS03340615NINDS NIH HHS R56 NS033406NINDS NIH HHS R56NS03340618
6 · The paper itself

Abstract

Repair of large nerve defects with acellular nerve allografts (ANAs) is an appealing alternative to autografting and allotransplantation. ANAs have been shown to be similar to autografts in supporting axonal regeneration across short gaps, but fail in larger defects due to a poorly-understood mechanism. ANAs depend on proliferating Schwann cells (SCs) from host tissue to support axonal regeneration. Populating longer ANAs places a greater proliferative demand on host SCs that may stress host SCs, resulting in senescence. In this study, we investigated axonal regeneration across increasing isograft and ANA lengths. We also evaluated the presence of senescent SCs within both graft types. A sciatic nerve graft model in rats was used to evaluate regeneration across increasing isograft (~autograft) and ANA lengths (20, 40, and 60 mm). Axonal regeneration and functional recovery decreased with increased graft length and the performance of the isograft was superior to ANAs at all lengths. Transgenic Thy1-GFP rats and qRT-PCR demonstrated that failure of the regenerating axonal front in ANAs was associated with increased levels of senescence related markers in the graft (senescence associated β-galactosidase, p16(INK4A), and IL6). Lastly, electron microscopy (EM) was used to qualitatively assess senescence-associated changes in chromatin of SCs in each graft type. EM demonstrated an increase in the presence of SCs with abnormal chromatin in isografts and ANAs of increasing graft length. These results are the first to suggest that SC senescence plays a role in limited axonal regeneration across nerve grafts of increasing gap lengths.

Indexed as

Animalsbeta-GalactosidaseCaspase 3ChromatinCyclin-Dependent Kinase Inhibitor p16Disease Models, AnimalGene Expression RegulationGreen Fluorescent ProteinsMaleMicroscopy, Electron, TransmissionNerve RegenerationNeuromuscular JunctionRatsRats, Inbred LewRats, Sprague-DawleyRats, Transgenicbeta-GalactosidaseCaspase 3ChromatinCyclin-Dependent Kinase Inhibitor p16Green Fluorescent ProteinsS100 Proteins4′,6-diamidino-2-phenylindoleacellularized nerve allograftsAcellular nerve allograftANAsCellular senescenceDAPIEDLextensor digitorum longusGFPgreen fluorescent proteinNerve autograftNerve graftingPeripheral nerveSchwann cellsSchwann cell senescenceSCssenescent Schwann cellsSenScs

Identifiers

PMID23644284
PMCPMC3863361
OpenAlexW2083737682

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.