Evidence map›Paper›PMID 17216130›Full record

ArticleOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2007

Osteoclasts prefer aged bone.

K Henriksen, D J Leeming, I Byrjalsen, R H Nielsen, M G Sorensen, M H Dziegiel, T John Martin, C Christiansen, P Qvist, M A Karsdal

Abstract read
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Article in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Effects of PTH and alendronate on type I collagen isomerization in postmenopausal women with osteoporosis: the PaTH study.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2008
    Trial
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  15. Molecular Basis of Bone Aging.International journal of molecular sciences · 2020
    Review
  16. Discovery of biomarkers to identify peri-implant osteolysis before radiographic diagnosis.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2018
    Article
  17. Ageing in the musculoskeletal system.Acta orthopaedica · 2016
    Review
  18. Article
  19. Article
  20. 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

10 authors.

K HenriksenPharmos Bioscience A/S & Nordic Bioscience A/S, Herlev, DK-2730, Denmark.
D J Leeming
I Byrjalsen
R H Nielsen
M G Sorensen
M H Dziegiel
T John Martin
C Christiansen
P Qvist
M A Karsdal

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledWe investigated whether the age of the bones endogenously exerts control over the bone resorption ability of the osteoclasts, and found that osteoclasts preferentially develop and resorb bone on aged bone. These findings indicate that the bone matrix itself plays a role in targeted remodeling of aged bones.

introductionOsteoclasts resorb aging bone in order to repair damage and maintain the quality of bone. The mechanism behind the targeting of aged bone for remodeling is not clear. We investigated whether bones endogenously possess the ability to control osteoclastic resorption.

methodsTo biochemically distinguish aged and young bones; we measured the ratio between the age-isomerized betaCTX fragment and the non-isomerized alphaCTX fragment. By measurement of TRACP activity, CTX release, number of TRACP positive cells and pit area/pit number, we evaluated osteoclastogenesis as well as osteoclast resorption on aged and young bones.

resultsWe found that the alphaCTX/betaCTX ratio is 3:1 in young compared to aged bones, and we found that both alpha and betaCTX are released by osteoclasts during resorption. Osteoclastogenesis was augmented on aged compared to young bones, and the difference was enhanced under low serum conditions. We found that mature osteoclasts resorb more on aged than on young bone, despite unchanged adhesion and morphology.

conclusionsThese data indicate that the age of the bone plays an important role in controlling osteoclast-mediated resorption, with significantly higher levels of osteoclast differentiation and resorption on aged bones when compared to young bones.

Indexed as

Acid PhosphataseAgingAnimalsBone and BonesBone RemodelingBone ResorptionCattleCell AdhesionCell DifferentiationCells, CulturedCollagen Type IHumansIsoenzymesOsteoclastsTartrate-Resistant Acid PhosphataseAcid PhosphataseCollagen Type IIsoenzymesTartrate-Resistant Acid Phosphatase

Identifiers

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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.