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ABSTRACT: Microbiota in gingival crevicular fluid before and after therapy in peri-implantitis

PROVIDER: PRJNA786326 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17134400_1.fastq.gz	Fastqsanger.gz
	SRR17134400_2.fastq.gz	Fastqsanger.gz
	SRR17134401_1.fastq.gz	Fastqsanger.gz
	SRR17134401_2.fastq.gz	Fastqsanger.gz
	SRR17134402_1.fastq.gz	Fastqsanger.gz

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Effect of different genes expression with the development of peri-implantitis

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Project description:Purpose: The aim of this study was to explore whether differences exist and to what an extent of the immune-mediated inflammatory reactions between periodontitis and peri-implantitis at the transcriptional level in the same susceptible host. Methods: Ligature-induced experimental peri-implantitis and periodontitis in the same mice were established. Gingival tissues of healthy, periodontitis and peri-implantitis sites from the same oral cavity were collected and used for RNA-sequencing. Differentially expressed genes (DEGs) were screened between periodontitis/peri-implantitis sites and healthy sites. The enrichment analysis of DEGs were analyzed. Comprehensive immune landscape was annotated by seq-ImmuCC. Results: The results showed that 137 and 353 up-regulated DEGs as well as and 670 and 174 down-regulated DEGs were specifically expressed periodontitis/peri-implantitis group compared to the healthy control group, respectively. The pathways of complement and coagulation cascade and osteoclast differentiation were dominating in the peri-implantitis sites. Moreover, peri-implantitis sites exhibited elevated macrophage proportions and relatively enriched macrophage activation and bone loss compared with periodontitis. Conclusions: Results indicated that peri-implantitis and periodontitis exhibited significantly distinct transcriptional signatures. Additionally, the study suggests that the interplay between macrophages and bone resorption are comparatively more active in peri-implantitis compared with periodontitis. These biological processes may be factors contributing to the pathogenesis of peri-implantitis being distinct from that of periodontitis.

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Project description:Gingival Crevicular Fluid, a plasma-derived exudate present in the gingival crevice was collected from deciduous, exfoliating and permanent teeth from 20 children (60 samples) with the aim to characterize and quantify by a mass spectrometry based top-down proteomic approach, the peptide/proteins in the fluid and verify possible variations occurring during the exfoliating process. The results obtained confirmed the presence in Gingival Crevicular Fluid of α-Defensins 1-4, Thymosin β4 and Thymosin β10, as described in previous works and revealed the presence of other interesting peptides never described before in Gingival Crevicular Fluid, such as specific fragments of α-1-antitrypsin, α-1-antichymotrypsin, Thymosin β4 and Thymosin β10 fragments, Fibrinopeptide A, Fibrinopeptide B, S100A, LVV Hemorphin-7 (hemoglobin chain β fragment), as well as some other peptides deriving from α and β subunits of hemoglobin. Statistical analysis evidenced different levels in 5 proteins/peptides in the three groups in particular with higher level in exfoliating teeth. Our study demonstrate that an in-depth analysis of a biological fluid like Gingival Crevicular Fluid, present in small amount, can provide useful information for the understanding of different biological processes like teeth eruption.

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