Quantitative proteomic workflow based on mass spectrometry (MS) is recently developed by the researchers to screen for biomarkers in periodontal diseases comprising periodontitis. Periodontitis is known for chronic inflammatory disease characterized by progressive destruction of the tooth-supporting apparatus, yet has a lack of clear pathobiology based on a discrepancy between specified categories and diagnostic vagueness. The objective of this review was to outlined the accessible information related to proteomics studies on periodontitis. The Preferred Reporting Items for Systematical Reviews and Meta-Analysis (PRISMA) statement guides to acquaint proteomic analysis on periodontal diseases was applied. Three databases were used in this study, such as Pubmed, ScienceDirect and Biomed Central from 2009 up to November 2019. Proteomics analysis platforms that used in the studies were outlined. Upregulated and downregulated proteins findings data were found, in which could be suitable as candidate biomarkers for this disease.
Background: Periodontal disease is common chronic adult condition. Antioxidants are present in the body fluid as protection against free radical. Uric acid is one of antioxidants that can be found in saliva. Moreover, the relationship among the antioxidant enzymes activities and clinical periodontal status were investigated. Objectives: The aim of the study was to observe uric acid level activities in the saliva of gingivitis and periodontitis patients. Methods: Six patients with gingivitis and six patients with periodontitis in Dental Hospital Trisakti University were included in the study. Clinical condition of each subject, the plaque index, and probing depth were determined. The salivary uric acid level was measured using the Folin-Wu method. Result: Salivary uric acid levels in the periodontitis patients with a mean ± SD 7.40 ± 0.31 (p = 0.004) were found to be higher compared to the gingivitis patients (mean ± SD = 6.84 ± 0.19). In addition, there were no significant differences in salivary uric acid levels between gender (p = 0.641). Conclusion: Uric acid levels in periodontitis patients were found to be higher than in gingivitis patients. Moreover, uric acid has more role on periodontitis than in gingivitis as an antioxidant agent.
Increasing evidence has shown an association between periodontitis and cognitive impairment. Subgingival microbiota play a great role in periodontitis pathogenesis. However, the correlation between the subgingival microbiome and cognitive impairment remains unclear. This study aimed to evaluate the red and orange complex subgingival microbiome of cognitively impaired and cognitively normal elderly Indonesian subjects with periodontitis. Twenty-eight elderly subjects diagnosed with periodontitis underwent two cognitive examinations using the Hopkins Verbal Learning Test and the Mini-Mental State Examination. Gingival crevicular fluid taken from the periodontal pocket, at a depth between 5 and 7 mm, using a paper point was used as the subgingival samples. The subgingival microbiome in the cognitive impairment group (n = 14) and cognitively normal group (n = 14) was compared using the 16S rRNA Metagenomic iSeq™ 100 Sequencing System. There was β-diversity in the subgingival microbiota between the cognitively impaired and cognitively normal subjects. The metagenomic analysis showed a higher abundance of Porphyromonas and Treponema bacteria in the cognitive impairment group than in the normal cognitive group (p < 0.05). The abundance of Porphyromonas gingivalis and Treponema denticola was higher in the cognitively impaired elderly subjects. The role of P. gingivalis and T. denticola in the pathogenesis of cognitive impairment needs further investigation.
B ACKGROUND:We previously reported Brucea javanica leaf extract (BJLE) induced apoptosis in human oral squamous cell carcinoma (HSC2) cells by attenuation of mitochondrial membrane permeability. However, further underlying mechanism is not known yet. Therefore, we conducted a study to investigate activation of Caspases related to attenuation of mitochondrial membrane permeability in BJLE-treated human oral squamous cell carcinoma. METHODS:B. javanica leaves were collected, identified, minced, dried, extracted with distilled ethanol at room temperature for 24 hours, filtered and evaporated. Resulted BJLE was stored at 4°C. HSC-2 and HSC-3 cells were fasted for 12 hours and treated with BJLE in various concentrations for 24 hours. Treated HSC-2 and HSC-3 cells were lysed and subjected to western blot, to detect cleaved-Caspase-9, cleaved-Caspase-3 and β-actin. All visualized bands were captured and quantified. Abstract RESULTS:Low numbers and morphological alterations of adherent HSC-2 and HSC-3 cells were observed in the group of cells treated with 500, 100 and 10 μg/mL BJLE. Numbers of adherent HSC-2 and HSC-3 cells treated with BJLE were shown decreased along with the increase of BJLE concentrations. Meanwhile, numbers of floating HSC-2 and HSC-3 cells were increased. Bands of cleavedCaspase-9 and cleaved-Caspase-3 were observed in HSC-2 and HSC-3 cells treated with 500 and 100 μg/mL BJLE. Higher-density bands of cleaved-Caspase-9 and cleavedCaspase-3 were observed in HSC-2 and HSC-3 cells treated with 500 μg/mL BJLE than 100 μg/mL BJLE.CONCLUSION: BJLE could induce apoptosis by activation of Caspase 9 and Caspase 3 of mitochondrial apoptotic pathway in human oral squamous cell carcinoma.
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