Evidence map›Paper›PMID 33478541›Full record

ArticleJournal of orthopaedic surgery and research2021

Effects of exogenous nerve growth factor on the expression of BMP-9 and VEGF in the healing of rabbit mandible fracture with local nerve injury.

Sen Yang, Jiao Cheng, Cheng Man, Lian Jiang, Guogeng Long, Wenjun Zhao, Dexin Zheng

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 17 citations in OpenAlex.

  1. Review
  2. Neural Orchestration of Mandibular Development.International dental journal · 2026
    Review
  3. Genes & diseases · 2026
    Article
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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

7 authors at 1 institution in 1 country.

Sen YangOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Jiao ChengOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China. cjjuse2020@163.com.
Cheng ManOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Lian JiangOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Guogeng LongOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Wenjun ZhaoOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Dexin ZhengOral Maxillofacial Trauma and Orthognathic Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Zunyi Medical University · CN

Funding

the project of Guizhou science and technology department QKHJZ-LKZ[2010]03the project of Guizhou science and technology department QKHJZ-LKZ[2013]009the project of Zunyi science and technology bureau ZSKHSZ(2018)-246
6 · The paper itself

Abstract

backgroundMandibular fracture healing is a complex process involving nerves and growth factors. Nerve growth factor (NGF) not only facilitates the maintenance of sympathetic neurite growth but also stimulates other growth factors that can promote the essential osteogenesis and angiogenesis for fracture healing. Therefore, it is necessary to analyze the combined effects of NGF, bone morphogenic protein-9 (BMP-9), and vascular endothelial growth factor (VEGF) to accelerate the healing of mandible fractures.

methodsThe models of mandible fracture with local nerve injury established in 48 rabbits were randomly divided into nerve growth factor group (NGF group), gelatin sponge group (GS group), blank group, and intact group. The recovery of nerve reflex was assessed by observing the number of rabbits with lower lip responses to acupuncture. The fracture healing was observed with visual and CBCT, and then callus tissues from the mandibular fracture area were collected for hematoxylin and eosin (HE) staining observation, and the expression of BMP-9 and VEGF in callus at different stages was detected by quantitative real-time PCR (qRT-PCR).

resultsNeedling reaction in the lower lip showed the number of animals with nerve reflex recovery was significantly higher in the NGF group than that in the GS and blank groups at the 2nd and 4th weeks after the operation. The combined results of macroscopic observation, CBCT examination, and histological analysis showed that a large number of osteoblasts and some vascular endothelial cells were found around the trabecular bone in the NGF group and the amount of callus formation and reconstruction was better than that in the GS group at the 2nd week after the operation. The qRT-PCR results indicated that the expression levels of BMP-9 and VEGF in the four groups reached the highest values at the 2nd week, while the expression levels of both in the NGF group were significantly higher than that in the GS group.

conclusionThe exogenous NGF could accelerate the healing of mandible fractures. This work will provide a new foundation and theoretical basis for clarifying the mechanism of fracture healing, thereby promoting fracture healing and reducing the disability rate of patients.

Indexed as

AnimalsDisease Models, AnimalFemaleFracture HealingGene ExpressionGrowth Differentiation Factor 2MaleMandibleMandibular InjuriesNeovascularization, PhysiologicNerve Growth FactorOsteogenesisPeripheral Nerve InjuriesRabbitsStimulation, ChemicalVascular Endothelial Growth Factor AGrowth Differentiation Factor 2Nerve Growth FactorVascular Endothelial Growth Factor ABone morphogenic protein-9Fracture healingMandibular fracturesNerve growth factorRabbitsVascular endothelial growth factor

Identifiers

PMID33478541
PMCPMC7818757
OpenAlexW3111295739

What OpenQuestion holds

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LicenceCC BY
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.