Evidence map›Paper›PMID 25541207›Full record

ArticleBone2015

HIF-1α regulates bone formation after osteogenic mechanical loading.

Ryan E Tomlinson, Matthew J Silva

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 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
1.8field-weighted citation impact, top 17% 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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Methodological aspects ofJournal of musculoskeletal & neuronal interactions · 2023
    Pooled it
  2. Pooled it
  3. Alveolar Bone Regeneration: Smart Biomaterials and Physical Stimulation.Journal of biomedical materials research. Part B, Applied biomaterials · 2026
    Review
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  15. Hypoxia Pathway in Osteoporosis: Laboratory Data for Clinical Prospects.International journal of environmental research and public health · 2023
    Review
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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

2 authors at 1 institution in 1 country.

Ryan E TomlinsonDepartments of Orthopaedic Surgery and Biomedical Engineering, Musculoskeletal Research Center, Washington University in St. Louis, 425 S. Euclid Avenue, St. Louis, MO 63110, USA. Electronic address: ryan.tomlinson@jhmi.edu.
Matthew J SilvaDepartments of Orthopaedic Surgery and Biomedical Engineering, Musculoskeletal Research Center, Washington University in St. Louis, 425 S. Euclid Avenue, St. Louis, MO 63110, USA. Electronic address: silvam@wustl.edu.
Washington University in St. Louis · US

Funding

The Role of the Osteoblast Secretome in Bone FormationP30AR057235 · NIAMS · WASHINGTON UNIVERSITY · PI SILVA, MATTHEW J · 2009 to 2018
$5.7M
OSTEOGENIC AND ANGIOGENIC RESPONSE TO SKELETAL LOADINGR01AR050211 · NIAMS · WASHINGTON UNIVERSITY · PI SILVA, MATTHEW J · 2003 to 2020
$5.0M
NIAMS NIH HHS P30 AR057235NIAMS NIH HHS R01 AR050211
6 · The paper itself

Abstract

HIF-1 is a transcription factor typically associated with angiogenic gene transcription under hypoxic conditions. In this study, mice with HIF-1α deleted in the osteoblast lineage (ΔHIF-1α) were subjected to damaging or non-damaging mechanical loading known to produce woven or lamellar bone, respectively, at the ulnar diaphysis. By microCT, ΔHIF-1α mice produced significantly less woven bone than wild type (WT) mice 7days after damaging loading. This decrease in woven bone volume and extent was accompanied by a significant decrease in vascularity measured by immunohistochemistry against vWF. Additionally, osteocytes, rather than osteoblasts, appear to be the main bone cell expressing HIF-1α following damaging loading. In contrast, 10days after non-damaging mechanical loading, dynamic histomorphometry measurements demonstrated no impairment in loading-induced lamellar bone formation in ΔHIF-1α mice. In fact, both non-loaded and loaded ulnae from ΔHIF-1α mice had increased bone formation compared with WT ulnae. When comparing the relative increase in periosteal bone formation in loaded vs. non-loaded ulnae, it was not different between ΔHIF-1α mice and controls. There were no significant differences observed between WT and ΔHIF-1α mice in endosteal bone formation parameters. The increases in periosteal lamellar bone formation in ΔHIF-1α mice are attributed to non-angiogenic effects of the knockout. In conclusion, these results demonstrate that HIF-1α is a pro-osteogenic factor for woven bone formation after damaging loading, but an anti-osteogenic factor for lamellar bone formation under basal conditions and after non-damaging loading.

Indexed as

Stress, MechanicalAnimalsFemaleHypoxia-Inducible Factor 1, alpha SubunitMiceOsteogenesisHif1a protein, mouseHypoxia-Inducible Factor 1, alpha SubunitHIF-1αHypoxia inducible factorMechanical loadingOsteogenesis

Identifiers

PMID25541207
PMCPMC4336830
OpenAlexW2040464196

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.