Evidence map›Paper›PMID 25445446›Full record

ArticleBone2015

Duration-dependent effects of clinically relevant oral alendronate doses on cortical bone toughness in beagle dogs.

David B Burr, Ziyue Liu, Matthew R Allen

Open access · greenAbstract read
In one paragraph

Article in Bone, 2015. 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
5.7field-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

16 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
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  5. Review
  6. Review
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  9. Undisturbed local bone formation capacity in patients with atypical femoral fractures: a case series.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2017
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Zoledronate treatment has different effects in mouse strains with contrasting baseline bone mechanical phenotypes.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2016
    Article
  15. The use of finite element analysis to estimate the changing strength of bone following treatment for osteoporosis.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2016
    Article
  16. Osteogenesis imperfecta.Lancet (London, England) · 2016
    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

3 authors at 2 institutions in 1 country.

David B BurrDepartment of Anatomy and Cell Biology, Indiana University School of Medicine, USA. Electronic address: dburr@iupui.edu.
Ziyue LiuDepartment of Biostatistics, Indiana University School of Medicine, USA.
Matthew R AllenDepartment of Anatomy and Cell Biology, Indiana University School of Medicine, USA.
Indiana University · USIndiana University School of Medicine

Funding

Remodeling Suppression--Damage and bone toughnessR01AR047838 · NIAMS · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI BURR, DAVID B · 2002 to 2011
$3.6M
Enhancing bone strength using combination drug therapyR01AR062002 · NIAMS · INDIANA UNIVERSITY INDIANAPOLIS · PI ALLEN, MATTHEW R · 2012 to 2016
$2.4M
EXTRAMURAL RESEARCH FACILITIES CONSTRUCTIONC06RR010601 · NCRR · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI MERRITT, DORIS H. · 1994 to 1994
–
NCRR NIH HHS C06 RR010601NCRR NIH HHS C06RR10601NIAMS NIH HHS AR047838NIAMS NIH HHS AR62002NIAMS NIH HHS R01 AR047838NIAMS NIH HHS R01 AR062002
6 · The paper itself

Abstract

Bisphosphonates (BPs) have been shown to significantly reduce bone toughness in vertebrae within one year when given at clinical doses to dogs. Although BPs also reduce toughness in the cortical bone when given at high doses, their effect on cortical bone material properties when given at clinical doses is less clear. In part, this may be due to the use of small sample sizes that were powered to demonstrate differences in bone mineral density rather than the bone's material properties. Our lab has conducted several studies in which dogs were treated with alendronate at a clinically relevant dose. The goal of this study was to examine these published and unpublished data collectively to determine whether there is a significant time-dependent effect of alendronate on toughness of the cortical bone. This analysis seemed particularly relevant given the recent occurrence of atypical femoral fractures in humans. Differences in the toughness of ribs taken from dogs derived from five separate experiments were measured. The dogs were orally administered saline (CON, 1ml/kg/day) or alendronate (ALN) at a clinical dose (0.2mg/kg/day). Treatment duration ranged from 3months to 3years. Groups were compared using ANOVA, and time trends analyzed with linear regression analysis. Linear regressions of the percent difference in toughness between CON and ALN at each time point revealed a significant reduction in toughness with longer exposure to ALN. The downward trend was primarily driven by a downward trend in post-yield toughness, whereas toughness in the pre-yield region was not changed relative to CON. These data suggest that a longer duration of treatment with clinical doses of ALN results in deterioration of cortical bone toughness in a time-dependent manner. As the duration of treatment is lengthened, the cortical bone exhibits increasingly brittle behavior. This may be important in assessing the role that long-term BP treatments play in the risk of atypical fractures of the femoral cortical bone in humans.

Indexed as

Administration, OralAlendronateAnimalsBiomechanical PhenomenaBone and BonesDogsDrug Administration ScheduleFemaleFractures, BoneLinear ModelsModels, AnimalTime FactorsAlendronateAtypical femoral fracturesBisphosphonatesCortical boneToughness

Identifiers

PMID25445446
PMCPMC4274196
OpenAlexW2055412993

What OpenQuestion holds

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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.