Evidence map›Paper›PMID 32841254›Full record

ArticlePloS one2020

Impact of hyperglycemia and treatment with metformin on ligature-induced bone loss, bone repair and expression of bone metabolism transcription factors.

Fernando Souza Malta, Roberto Puertas Garcia, Josuel Siqueira Azarias, Geysica Kauane Dos Reis Ribeiro, Tamires Szemereske Miranda, Jamil Awad Shibli, Marta Ferreira Bastos

Open access · goldFull text read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

9 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Metformin and bone metabolism: unraveling their direct and indirect effects.Therapeutic advances in endocrinology and metabolism · 2025
    Review
  3. Impact of Metformin on Periodontal and Peri-Implant Soft and Hard Tissue.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

7 authors at 2 institutions in 1 country.

Fernando Souza MaltaDepartment of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, São Paulo, Brazil.
Roberto Puertas GarciaDepartment of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, São Paulo, Brazil.
Josuel Siqueira AzariasDepartment of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, São Paulo, Brazil.
Geysica Kauane Dos Reis RibeiroDepartment of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, São Paulo, Brazil.
Tamires Szemereske MirandaDepartment of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, São Paulo, Brazil.
Jamil Awad ShibliDepartment of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, São Paulo, Brazil.ORCID 0000-0003-1971-0195
Marta Ferreira BastosDepartment of Post-Graduation in Aging Sciences, São Judas Tadeu University, São Paulo, Brazil.
Guarulhos University · BRUniversidade São Judas Tadeu · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study evaluated the influence of type 2 diabetes mellitus on bone loss, bone repair and cytokine production in hyperglycemic rats, treated or not with metformin. The animals were distributed as follow: Non-Hyperglycemic (NH), Non Hyperglycemic with Ligature (NH-L), Treated Non Hyperglycemic (TNH), Treated Non Hyperglycemic with Ligature Treated (TNH-L), Hyperglycemic (H), Treated Hyperglycemic (TH), Hyperglycemic with Ligature (H-L), Treated Hyperglycemic with Ligature (TH-L). At 40th day after induction of hyperglycemia, the groups NH-L, TNH-L, H-L, TH-L received a ligature to induce periodontitis. On the 69th, the TNH, TNH-L, TH, TH-L groups received metformin until the end of the study. Bone repair was evaluated at histometric and the expression levels of Sox9, RunX2 and Osterix. Analysis of the ex-vivo expression of TNF-α, IFN-γ, IL-12, IL-4, TGF-β, IL-10, IL-6 and IL-17 were also evaluated. Metformin partially reverse induced bone loss in NH and H animals. Lower OPG/RANKL, increased OCN and TRAP expression were observed in hyperglycemic animals, and treatment with metformin partially reversed hyperglycemia on the OPG/RANKL, OPN and TRAP expression in the periodontitis. The expression of SOX9 and RunX2 were also decreased by hyperglycemia and metformin treatment. Increased ex vivo levels of TNF-α, IL-6, IL-4, IL-10 and IL-17 was observed. Hyperglycemia promoted increased IL-10 levels compared to non-hyperglycemic ones. Treatment of NH with metformin was able to mediate increased levels of TNF-α, IL-10 and IL-17, whereas for H an increase of TNF-α and IL-17 was detected in the 24- or 48-hour after stimulation with LPS. Ligature was able to induce increased levels of TNF-α and IL-17 in both NH and H. This study revealed the negative impact of hyperglycemia and/or treatment with metformin in the bone repair via inhibition of transcription factors associated with osteoblastic differentiation.

Indexed as

Alveolar Bone LossAlveolar ProcessAnimalsBone RegenerationCell DifferentiationCytokinesDiabetes Mellitus, ExperimentalDiabetes Mellitus, Type 2HumansHyperglycemiaMetforminOsteoblastsPeriodontitisRatsStreptozocinTranscription FactorsCytokinesMetforminStreptozocinTranscription Factors

Identifiers

PMID32841254
PMCPMC7447028
OpenAlexW3080164395

What OpenQuestion holds

Textfull text, public
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.