Evidence map›Paper›PMID 20807012›Full record

ArticleTissue engineering. Part A2011

Teriparatide therapy and beta-tricalcium phosphate enhance scaffold reconstruction of mouse femoral defects.

Justin A Jacobson, Laura Yanoso-Scholl, David G Reynolds, Tulin Dadali, Gino Bradica, Susan Bukata, Edward J Puzas, Michael J Zuscik, Randy Rosier, Regis J O'Keefe and 2 more

Open access · greenAbstract read
In one paragraph

Article in Tissue engineering. Part A, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

16 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Emerging local delivery strategies to enhance bone regeneration.Biomedical materials (Bristol, England) · 2020
    Review
  7. Review
  8. Teriparatide for treating delayed union and nonunion: A systematic review.Journal of clinical orthopaedics and trauma · 2020
    Review
  9. Anabolic Therapies in Osteoporosis and Bone Regeneration.International journal of molecular sciences · 2018
    Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Teriparatide, a nonsurgical solution for femoral nonunion? A report of three cases.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2012
    Article
  16. 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

12 authors at 1 institution in 1 country.

Justin A JacobsonThe Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York, USA.
Laura Yanoso-Scholl
David G Reynolds
Tulin Dadali
Gino Bradica
Susan Bukata
Edward J Puzas
Michael J Zuscik
Randy Rosier
Regis J O'Keefe
Edward M Schwarz
Hani A Awad
University of Rochester Medical Center · US

Funding

Translating PTH Therapy as an Adjuvant for Structural AllograftingP50AR054041 · NIAMS · UNIVERSITY OF ROCHESTER · PI SCHWARZ, EDWARD M. · 2006 to 2016
$15.7M
PTH Effects of Craniofacial AllograftsR01DE019902 · NIDCR · UNIVERSITY OF ROCHESTER · PI GAZIT, DAN, SCHWARZ, EDWARD M. · 2009 to 2019
$5.0M
Engineering scarless repair of flexor tendon injuriesR01AR056696 · NIAMS · UNIVERSITY OF ROCHESTER · PI AWAD, HANI A, BENOIT, DANIELLE S. · 2009 to 2019
$3.6M
NIAMS NIH HHS 1R01AR056696-01ANIAMS NIH HHS 5P50AR054041-04NIDCR NIH HHS 1R01DE019902-01
6 · The paper itself

Abstract

To investigate the efficacy of endocrine parathyroid hormone treatment on tissue-engineered bone regeneration, massive femoral defects in C57Bl/6 mice were reconstructed with either 100:0 or 85:15 poly-lactic acid (PLA)/beta-tricalcium phosphate (β-TCP) scaffolds (hereafter PLA or PLA/βTCP, respectively), which were fabricated with low porosity (<30%) to improve their structural rigidity. Experimental mice were treated starting at 1 week postop with daily subcutaneous injections of 40 μg/kg teriparatide until sacrifice at 9 weeks, whereas control mice underwent the same procedure but were injected with sterile saline. Bone regeneration was assessed longitudinally using planar X-ray and quantitative microcomputed tomography, and the reconstructed femurs were evaluated at 9 weeks either histologically or biomechanically to determine their torsional strength and rigidity. Teriparatide treatment increased bone volume and bone mineral content significantly at 6 weeks and led to enhanced trabeculated bone callus formation that appeared to surround and integrate with the scaffold, thereby establishing union by bridging bone regeneration across the segmental defect in 30% of the reconstructed femurs, regardless of the scaffold type. However, the bone volume and mineral content in the PLA reconstructed femurs treated with teriparatide was reduced at 9 weeks to control levels, but remained significantly increased in the PLA/βTCP scaffolds. Further, bridged teriparatide-treated femurs demonstrated a prototypical brittle bone torsion behavior, and were significantly stronger and stiffer than control specimens or treated specimens that failed to form bridging bone union. Taken together, these observations suggest that intermittent, systemic parathyroid hormone treatment can enhance bone regeneration in scaffold-reconstructed femoral defects, which can be further enhanced by mineralized (βTCP) particles within the scaffold.

Indexed as

Tissue ScaffoldsAnimalsBone SubstitutesCalcium PhosphatesCombined Modality TherapyFemaleFemoral FracturesMiceMice, Inbred BALB CTeriparatideTreatment Outcomebeta-tricalcium phosphateBone SubstitutesCalcium PhosphatesTeriparatide

Identifiers

PMID20807012
PMCPMC3028991
OpenAlexW2056068005

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.