Evidence map›Paper›PMID 31445224›Full record

ArticleBone2019

Effects of ex vivo ionizing radiation on collagen structure and whole-bone mechanical properties of mouse vertebrae.

Megan M Pendleton, Shannon R Emerzian, Jennifer Liu, Simon Y Tang, Grace D O'Connell, Joshua S Alwood, Tony M Keaveny

Open access · greenAbstract read
In one paragraph

Article in Bone, 2019. 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
3.5field-weighted citation impact, top 8% 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, 35 citations in OpenAlex.

  1. X-Ray Exposure Induces Structural Changes in Human Breast Proteins.International journal of molecular sciences · 2025
    Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Relative Effects of Radiation-Induced Changes in Bone Mass, Structure, and Tissue Material on Vertebral Strength in a Rat Model.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2023
    Article
  7. Article
  8. Fatigue crack propagation and fracture toughness of cortical bone are radiation dose-dependent.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2023
    Article
  9. Effect of mechanical forces on cellular response to radiation.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2022
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Altered mechanical behavior of demineralized bone following therapeutic radiation.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2021
    Article
  15. Article
  16. Article
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 3 institutions in 1 country.

Megan M PendletonDepartment of Mechanical Engineering, University of California, Berkeley, CA, USA.
Shannon R EmerzianDepartment of Mechanical Engineering, University of California, Berkeley, CA, USA.
Jennifer LiuDepartment of Orthopaedic Surgery, Washington University, St. Louis, MO, USA.
Simon Y TangDepartment of Orthopaedic Surgery, Washington University, St. Louis, MO, USA; Department of Biomedical Engineering, Washington University, St. Louis, MO, USA; Department of Material Science & Mechanical Engineering, Washington University, St. Louis, MO, USA.
Grace D O'ConnellDepartment of Mechanical Engineering, University of California, Berkeley, CA, USA; Department of Orthopaedic Surgery, University of California, San Francisco, CA, USA.
Joshua S AlwoodSpace Biosciences Division, NASA Ames Research Center, Moffett Field, CA, USA.
Tony M KeavenyDepartment of Mechanical Engineering, University of California, Berkeley, CA, USA; Department of Bioengineering, University of California, Berkeley, CA, USA. Electronic address: tonykeaveny@berkeley.edu.
University of California, Berkeley · USWashington University in St. Louis · USAmes Research Center · US

Funding

The role of physiologic and pathologic AGEs on RAGE signaling in IVD degenerationR01AR074441 · NIAMS · WASHINGTON UNIVERSITY · PI TANG, SIMON YUE-CHEONG · 2019 to 2024
$2.1M
Tissue Level Deformations of the Loaded Spine in Humans with Low Back PainK01AR069116 · NIAMS · WASHINGTON UNIVERSITY · PI TANG, SIMON YUE-CHEONG · 2016 to 2019
$489k
Effects of Ages and Rage on IVD Degeneration And InflammationR21AR069804 · NIAMS · WASHINGTON UNIVERSITY · PI TANG, SIMON YUE-CHEONG · 2017 to 2018
$369k
NIAMS NIH HHS K01 AR069116NIAMS NIH HHS R01 AR074441NIAMS NIH HHS R21 AR069804
6 · The paper itself

Abstract

Bone can become brittle when exposed to ionizing radiation across a wide range of clinically relevant doses that span from radiotherapy (accumulative 50 Gy) to sterilization (~35,000 Gy). While irradiation-induced embrittlement has been attributed to changes in the collagen molecular structure, the relative role of collagen fragmentation versus non-enzymatic collagen crosslinking remains unclear. To better understand the effects of radiation on the bone material without cellular activity, we conducted an ex vivo x-ray radiation experiment on excised mouse lumbar vertebrae. Spinal tissue from twenty-week old, female, C57BL/6J mice were randomly assigned to a single x-ray radiation dose of either 0 (control), 50, 1000, 17,000, or 35,000 Gy. Measurements were made for collagen fragmentation, non-enzymatic collagen crosslinking, and both monotonic and cyclic-loading compressive mechanical properties. We found that the group differences for mechanical properties were more consistent with those for collagen fragmentation than for non-enzymatic collagen crosslinking. Monotonic strength at 17,000 and 35,000 Gy was lower than that of the control by 50% and 73% respectively, (p < 0.001) but at 50 and 1000 Gy was not different than the control. Consistent with those trends, collagen fragmentation only occurred at 17,000 and 35,000 Gy. By contrast, non-enzymatic collagen crosslinking was greater than control for all radiation doses (p < 0.001). All results were consistent both for monotonic and cyclic loading conditions. We conclude that the reductions in bone compressive monotonic strength and fatigue life due to ex vivo ionizing radiation are more likely caused by fragmentation of the collagen backbone than any increases in non-enzymatic collagen crosslinks.

Indexed as

Radiation, IonizingAnimalsBone and BonesBone DensityCollagenCompressive StrengthFemaleMiceMice, Inbred C57BLRandom AllocationStress, MechanicalX-Ray MicrotomographyCollagenBone-graftBone strengthCollagenFatigueIonizing radiationSterilization

Identifiers

PMID31445224
PMCPMC6813909
OpenAlexW2969625347

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.