Dataset Information

Top Down Proteomic analysis of Gingival Crevicular Fluid in deciduous, exfoliating and permanent teeth in children

ABSTRACT: 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.

INSTRUMENT(S): LTQ Orbitrap Elite

ORGANISM(S): Homo Sapiens (human)

SUBMITTER: Federica Iavarone

LAB HEAD: Federica Iavarone

PROVIDER: PXD016010 | Pride | 2020-07-09

REPOSITORIES: Pride

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Top down proteomic analysis of gingival crevicular fluid in deciduous, exfoliating and permanent teeth in children.

Iavarone Federica F Olianas Alessandra A Patini Romeo R Gallenzi Patrizia P Di Tonno Laura L Desiderio Claudia C Cabras Tiziana T Manconi Barbara B Vincenzoni Federica F Cordaro Massimo M Messana Irene I Urbani Andrea A Castagnola Massimo M

Journal of proteomics 20200703

Gingival Crevicular Fluid (GCF), 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 GCF of α-Defensins 1-4, Thymosin β4 and Thymosin β10, as describ ...[more]

PMID: 32629195

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Project description:Analysis of gingival crevicular fluid (GCF) samples may give information of the identity of unattached (planktonic) subgingival bacteria, the 35 forefront candidates for systemic dispersal via ulcerated periodontal pocket epithelium. Our study represents the first one targeting the identity of bacteria in gingival crevicular fluid. Methodology/Principal findings: We determined bacterial species diversity in GCF samples of a group of periodontitis patients and delineated contributing bacterial and host-associated factors. Subgingival paper point (PP) samples from the same sites were taken for comparison. After DNA extraction, 16S rRNA genes were PCR amplified and DNA-DNA hybridization was performed using a microarray for over 300 bacterial species or groups. Altogether 133 species from 41 genera and 8 phyla 45 were detected with 9 to 62 and 18 to 64 species in GCF and PP samples, respectively, 46 per patient. Projection to latent structures by means of partial least squares (PLS) was applied to the multivariate data analysis. PLS regression analysis showed that species of genera including Campylobacter, Selenomonas, Porphyromonas, Catonella, Tannerella, Dialister, Peptostreptococcus, Streptococcus and Eubacterium had significant positive correlations and the number of teeth with low-grade attachment loss a significant negative correlation to species diversity in GCF samples. OPLS/O2PLS discriminant analysis revealed significant positive correlations to GCF sample group membership for species of genera Campylobacter, Leptotrichia, Prevotella, Dialister, Tannerella, Haemophilus, Fusobacterium, Eubacterium, and Actinomyces. Conclusions/Significance: Among a variety of detected species those traditionally classified as Gram-negative anaerobes growing in mature subgingival biofilms were the main predictors for species diversity in GCF samples as well as responsible for distinguishing GCF samples from PP samples. GCF bacteria may provide new prospects for studying dynamic properties of subgingival biofilms. The microbial profiles of GCF and subgingival plaque were analyzed from 17 subjects with periodontal disease.

			Action	DRS
	Alpha1antichymotrypsin.mgf	Mgf
	Alpha1antichymotrypsin.zip	Other
	Alpha1antitrypsin.mgf	Mgf
	Alpha1antitrypsin.zip	Other
	FibrinopeptideA.mgf	Mgf