ArticleScientific reports2021
The influence of M-CSF on fracture healing in a mouse model.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 16 citations in OpenAlex.
- Review
- Intraperitoneal clodronate liposomes remodel the local macrophage niche and potentiate biomaterial-induced osteoinduction.Molecular biology reports · 2026Article
- Molecular Signaling Pathways and MicroRNAs in Bone Remodeling: A Narrative Review.Diseases (Basel, Switzerland) · 2024Review
- Investigating the influence of titanium particle size and concentration on osteogenic response of human osteoblasts - in vitro study.Biomaterial investigations in dentistry · 2024Article
- Distinct defects in early innate and late adaptive immune responses typify impaired fracture healing in diet-induced obesity.Frontiers in immunology · 2023Article
- The role of macrophages in fracture healing: a narrative review of the recent updates and therapeutic perspectives.Stem cell investigation · 2023Review
- Bone Regeneration and Oxidative Stress: An Updated Overview.Antioxidants (Basel, Switzerland) · 2022Review
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Macrophage colony-stimulating factor 1 (M-CSF) is known to play a critical role during fracture repair e.g. by recruiting stem cells to the fracture site and impacting hard callus formation by stimulating osteoclastogenesis. The aim of this experiment was to study the impact of systemic M-CSF application and its effect on bony healing in a mouse model of femoral osteotomy. Doing so, we studied 61 wild type (wt) mice (18-week-old female C57BL/6) which were divided into three groups: (1) femoral osteotomy, (2) femoral osteotomy + stabilization with external fixator and (3) femoral osteotomy + stabilization with external fixator + systemic M-CSF application. Further, 12 op/op mice underwent femoral osteotomy and served as proof of concept. After being sacrificed at 28 days bony bridging was evaluated ex vivo with µCT, histological and biomechanical testing. Systemic M-CSF application impacted osteoclasts numbers, which were almost as low as found in op/op mice. Regarding callus size, the application of M-CSF in wt mice resulted in significantly larger calluses compared to wt mice without systemic M-CSF treatment. We further observed an anabolic effect of M-CSF application resulting in increased trabecular thickness compared to wt animals without additional M-CSF application. Systemic M-CSF application did not alter biomechanical properties in WT mice. The impact of M-CSF application in a mouse model of femoral osteotomy was oppositional to what we were expecting. While M-CSF application had a distinct anabolic effect on callus size as well as trabecular thickness, this on bottom line did not improve biomechanical properties. We hypothesize that in addition to the well-recognized negative effects of M-CSF on osteoclast numbers this seems to further downstream cause a lack of feedback on osteoblasts. Ultimately, continuous M-CSF application in the absence of co-stimulatory signals (e.g. RANKL) might overstimulate the hematopoietic linage in favor of tissue macrophages instead of osteoclasts.
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