ArticleOral diseases2021
Effect of environmental tobacco smoke on COX-2 and SHP-2 expression in a periodontitis rat model.
Article in Oral diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
Who cites it
10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 10 citations in OpenAlex.
- Systemic non-steroidal anti-inflammatory drugs as adjuncts in the treatment of chronic periodontitis: a systematic review and network meta-analysis.BMC oral health · 2026Pooled it
- Is secondhand smoke exposure associated with poor periodontal status in children and adolescents? A systematic review and meta-analysis.European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry · 2022Pooled it
- VNN1, upregulated by FOXA1, suppresses osteogenic differentiation and promotes inflammation in LPS-induced periodontal ligament stem cells.Odontology · 2026Article
- The associations between volatile organic compounds and bone loss around teeth among US adults.BMC public health · 2026Article
- Decoding different oxidative stress pathways in periodontitis: a comparative review of mechanisms of traditional tobacco smoke and electronic smoke aerosol.Archives of toxicology · 2025Review
- Cadmium decreases human gingival fibroblast viability and induces pro-inflammatory response associated with Akt and MAPK pathway activation.Frontiers in toxicology · 2025Article
- Article
- Association between exposure to environmental pollutants and increased oral health risks, a comprehensive review.Frontiers in public health · 2024Review
- "Medicine food homology" plants promote periodontal health: antimicrobial, anti-inflammatory, and inhibition of bone resorption.Frontiers in nutrition · 2023Review
- Effect of environmental tobacco smoke on COX-2 and SHP-2 expression in a periodontitis rat model.Oral diseases · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
objectivesTo investigate the effects of environmental tobacco smoke (ETS) on the inflammatory process of periodontitis by evaluating bone loss and the expression of cyclooxygenase-2 (COX-2) and Src homology phosphotyrosine phosphatase 2 (SHP-2). MATERIALS AND
methodsEighty 6-month-old male SD rats were randomized into four groups (10 rats/group/per time point): (a) normal group, (b) ETS group, (c) ligature-induced periodontitis group, and (d) ligature-induced periodontitis + ETS group. After treatment with ligature and/or ETS for 8 and 12 weeks, the levels of alveolar bone resorption and the expressions of COX-2 and SHP-2 in periodontal tissue were analyzed using histology and immunohistochemistry.
resultsThe ligature-induced periodontitis group displayed increased bone resorption and elevated expression of COX-2 and SHP-2 in periodontal tissues compared to the normal and ETS groups at 8 and 12 weeks. Furthermore, bone resorption and COX-2 and SHP-2 levels in the ligature-induced periodontitis + ETS group were significantly increased compared to those in the normal and ligature-induced periodontitis groups at both 8 and 12 weeks.
conclusionEnvironmental tobacco smoke increased alveolar bone loss in periodontitis with enhanced expression of COX-2 and SHP-2 in periodontal tissues. Further investigation is needed to explore the role of COX-2 and SHP-2 in ETS-associated periodontitis.
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Registered trials
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 Socratic graph.