Evidence map›Paper›PMID 22878481›Full record

ArticlePlastic and reconstructive surgery2012

Quantitative histologic evidence of amifostine-induced cytoprotection in an irradiated murine model of mandibular distraction osteogenesis.

Catherine N Tchanque-Fossuo, Alexis Donneys, Elizabeth R Razdolsky, Laura A Monson, Aaron S Farberg, Sagar S Deshpande, Deniz Sarhaddi, Behdod Poushanchi, Steven A Goldstein, Steven R Buchman

Abstract readEvaluation Study
In one paragraph

Article in Plastic and reconstructive surgery, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 20 citations in OpenAlex.

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  7. Prophylactic administration of Amifostine protects vessel thickness in the setting of irradiated bone.Journal of plastic, reconstructive & aesthetic surgery : JPRAS · 2015
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  9. Amifostine preserves osteocyte number and osteoid formation in fracture healing following radiotherapy.Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons · 2014
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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

10 authors at 2 institutions in 1 country.

Catherine N Tchanque-FossuoAnn Arbor, Mich. From the University of Michigan Medical School, and the Department of Orthopedic Surgery, University of Michigan.
Alexis Donneys
Elizabeth R Razdolsky
Laura A Monson
Aaron S Farberg
Sagar S Deshpande
Deniz Sarhaddi
Behdod Poushanchi
Steven A Goldstein
Steven R Buchman
Ann Arbor Center for Independent Living · USUniversity of Michigan–Ann Arbor · US

Funding

Translational Optimization of Bone Regeneration in the Irradiated MandibleR01CA125187 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BUCHMAN, STEVEN R · 2007 to 2017
$2.8M
NCI NIH HHS R01 CA125187NCI NIH HHS R01 CA 12587-01
6 · The paper itself

Abstract

backgroundHead and neck cancer management requires adjuvant radiotherapy. The authors have previously demonstrated the damaging effect of a human equivalent dose of radiation on a murine mandibular model of distraction osteogenesis. Using quantitative histomorphometry, the authors' specific aim was to objectively measure amifostine radioprotection of the cellular integrity and tissue quality of an irradiated and distracted regenerate.

methodsSprague-Dawley rats were assigned randomly into two groups: radiotherapy/distraction osteogenesis and amifostine/radiotherapy/distraction osteogenesis, which received amifostine before radiotherapy. Both groups received a fractionated human equivalent dose of radiation prior to left mandibular osteotomy with fixator placement. Distraction to 5.1 mm was followed by a 28-day consolidation period. Quantitative histomorphometry was performed on left hemimandibles for osteocytes, empty lacunae, bone volume-to-tissue volume ratio, and osteoid volume-to-tissue volume ratio.

resultsAmifostine/radiotherapy/distraction osteogenesis exhibited bony bridging as opposed to radiotherapy/distraction osteogenesis fibrous unions. Quantitative histomorphometry analysis revealed statistically significant higher osteocyte count and bone volume-to-tissue volume ratio in amifostine-treated mandibles compared with irradiated mandibles. There was a corresponding decrease in empty lacunae and the ratio of osteoid volume-to-tissue volume between both groups.

conclusionsThe authors have successfully established the significant osseous cytoprotective and histoprotective capacity of amifostine for distraction osteogenesis in the face of radiotherapy. The amifostine-sparing effect on bone cellularity correlated with increased bony unions and elimination of fibrous union. The authors posit that the demonstration of similar efficacy of amifostine in the clinic may allow the successful implementation of distraction osteogenesis as a viable reconstructive option for head and neck cancer in the future.

Indexed as

AmifostineAnimalsDrug Administration ScheduleExternal FixatorsImage Processing, Computer-AssistedMandibleMandibular OsteotomyOsteocytesOsteogenesis, DistractionRadiation Injuries, ExperimentalRadiation-Protective AgentsRandom AllocationRatsRats, Sprague-DawleyAmifostineRadiation-Protective Agents

Identifiers

PMID22878481
PMCPMC3511660
OpenAlexW1992030567

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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.