Evidence map›Paper›PMID 16642029›Full record

ArticleGene therapy2006

Effect of BMP-2 gene transfer on bone healing in sheep.

M Egermann, C A Lill, K Griesbeck, C H Evans, P D Robbins, E Schneider, A W Baltzer

Abstract read
PubMed Publisher
In one paragraph

Article in Gene therapy, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

37 citing papers in PubMed, 116 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Gene therapy for bone healing: lessons learned and new approaches.Translational research : the journal of laboratory and clinical medicine · 2021
    Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Location-dependent heterotopic ossification in the rat model: The role of activated matrix metalloproteinase 9.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2016
    Article
  19. Article
  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

7 authors at 4 institutions in 3 countries.

M EgermannAO Research Institute, Davos, Switzerland. marcus.egermann@aofoundation.org
C A Lill
K Griesbeck
C H Evans
P D Robbins
E Schneider
A W Baltzer
AO Foundation · CHCenter for Orthopaedics · USHeidelberg University · DEUniversity of Pittsburgh · US

Funding

NIAMS NIH HHS R01 AR 0520243
6 · The paper itself

Abstract

Critical size defects of bone and delayed fracture healing due to metabolic disorders are still problems in orthopaedic surgery. Adenoviral vectors encoding bone morphogenetic protein-2 (Ad.BMP-2) have been used to stimulate bone formation in small animals. The present study evaluated the use of direct adenoviral gene transfer for inducing bone formation in a large animal. Standardized iliac crest defects were created surgically on both sides of the pelvic bone of white mountain sheep. The efficiency of gene transfer was evaluated using recombinant adenoviruses carrying the cDNA for luciferase. High levels of transgene expression, restricted to the site of injection, were found for the 1st week. Transgene expression then fell considerably, but could still be detected for up to 5 weeks. To investigate the effect on bone healing, Ad.BMP-2 (10(11) particles in 200 mul saline) was unilaterally injected into iliac crest defects and into tibial osteotomies. The contralateral defects remained untreated to evaluate possible systemic effects. The controls were treated with saline solution. Bone formation within the defect, assessed by micro-computed tomography (CT) measurement at 8 weeks, and callus formation after osteotomy were significantly reduced following direct application of Ad.BMP-2. The retardation compared to untreated control animals was additionally found at the contralateral iliac crest indicating a systemic inhibitory effect. Histological analysis confirmed the CT measurement and showed an increased number of inflammatory cells within both defects. Antibodies against the adenovirus and the transgene product were detected in all treated animals. These data show a systemic retardation of bone formation following a single local injection of Ad.BMP-2 in sheep. This finding stands in contrast to the data obtained from small animal models. Further studies are needed to determine the contribution of the immune response to these results, and whether a lower dose of Ad.BMP-2 would be advantageous.

Indexed as

Fracture HealingAdenoviridaeAnimalsAntibodies, ViralBone Morphogenetic Protein 2Bone Morphogenetic ProteinsBony CallusFemaleFractures, BoneGene ExpressionGenetic TherapyGenetic VectorsHip FracturesLuciferasesModels, AnimalOsteogenesisAntibodies, ViralBone Morphogenetic Protein 2Bone Morphogenetic ProteinsLuciferasesTransforming Growth Factor beta

Identifiers

PMID16642029
OpenAlexW1981664261

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.