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Dive into the research topics where Denise Gomes da Silva is active.

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Featured researches published by Denise Gomes da Silva.


Archives of Oral Biology | 2009

Detection of cytotoxin genotypes of Helicobacter pylori in stomach, saliva and dental plaque

Denise Gomes da Silva; Roy H. Stevens; Jacyara Maria Brito Macedo; Rodolpho M. Albano; Márcio Eduardo Vieira Falabella; Enno C. I. Veerman; Eduardo Muniz Barretto Tinoco

BACKGROUND The aim of this study was to detect the presence of Helicobacter pylori and its virulent cagA genes in the oral cavity of individuals with upper gastric diseases. Sixty-two individuals (42+/-2.3 years) with dispepsy symptoms, referred for gastroscopy and who were H. pylori positive in the gastric biopsy, were recruited and separated in two groups: case group-individuals with gastric disease (n = 30); control group-individuals with no gastric disease (n = 32); saliva, dental plaque and biopsy samples were collected from all individuals. Oral and biopsy samples were analyzed by PCR using specific primers for H. pylori 16S ribosomal and cagA genes. PCR products were sequenced for DNA homology confirmation. H. pylori was detected neither in dental plaque nor in saliva in the control group. In the case group H. pylori DNA was detected in 16/30 (53.3%) saliva samples and in 11/30 (36.6%) dental plaque samples. The cagA gene was detected in 13/30 (43.3%) gastric biopsies, in 7/16 (43.8%) saliva samples, and in 3/11 (27.3%) dental plaque samples. Eighteen (60.0%) individuals in the case group were H. pylori positive both in oral and biopsy samples, and 8 (26.6%) of those were positive for cagA-H. pylori DNA. H. pylori and its virulent clone showed a higher prevalence in the oral cavity of individuals in the case group than in the control group (p < 0.05). Our results suggest that dental plaque and saliva may serve as temporary reservoir for H. pylori and its virulent cagA variant in individuals with gastric disease.


Memorias Do Instituto Oswaldo Cruz | 2010

Helicobacter pylori transiently in the mouth may participate in the transmission of infection

Denise Gomes da Silva; Eduardo Muniz Barretto Tinoco; Gifone A. Rocha; Andreia Maria Camargos Rocha; Juliana Becattini Guerra; Ivan Euclides Borges Saraiva; Dulciene Maria Magalhães Queiroz

Helicobacter pylori infection is associated with peptic ulcer and gastric carcinoma. The oral cavity may be a reservoir for H. pylori; however, the results of studies on this subject are controversial. We employed single-step and nested polymerase chain reactions (PCR) to detect the presence of the vacA, ureA and 16S rDNA genes of H. pylori in the stomach, saliva and dental plaque of 30 subjects. The results were confirmed by sequencing. Nested 16S rDNA and ureA amplification was achieved in 80% of gastric, 30% of saliva and 20% of dental plaque specimens. Sequencing of 10, seven and four 16S rDNA products from stomach, saliva and dental plaque, respectively, showed > 99% identity with H. pylori. Sequencing of the other four oral cavity PCR products showed similarity with Campylobacter and Wolinella species. Additionally, the vacA genotype identified in the samples of different sites was the same within a given subject.H. pylori may be found in the oral cavity of patients with gastric infection, thus it could be a source of transmission. However, results obtained with detection methods based only on PCR should be interpreted with caution because other microorganisms that are phylogenetically very close to H. pylori are also present in the mouth.


Archives of Oral Biology | 2010

Presence of Helicobacter pylori in supragingival dental plaque of individuals with periodontal disease and upper gastric diseases

Denise Gomes da Silva; Roy H. Stevens; Jacyara Maria Brito Macedo; Rodolpho M. Albano; Márcio Eduardo Vieira Falabella; Ricardo Guimarães Fischer; Enno C. I. Veerman; Eduardo Muniz Barretto Tinoco

BACKGROUND Helicobacter pylori is a Gram-negative microorganism which is able to colonize the gastric mucosa and is associated with peptic ulcer, gastric carcinoma, and gastric mucosa-associated lymphoid tissue lymphoma. Several studies have detected this bacterium in the oral cavity, suggesting it as a potential reservoir. The aim of this study was to investigate the presence of H. pylori in the oral cavity of individuals with periodontal disease and gastric diseases. METHODS 115 individuals, with mean age 49.6 (±5.8) years, were divided in 4 groups: (A) with gastric diseases and periodontal disease; (B) with gastric diseases and no periodontal disease; (C) without gastric diseases and without periodontal disease, (D) without gastric diseases and with periodontal disease. Supra and subgingival plaque samples were collected from posterior teeth of the individuals with sterile paper points, and prepared for Polymerase Chain Reaction analysis. Fishers exact test was used for detecting statistical differences between groups (p<0.05). RESULTS H. pylori was detected in supragingival plaque of 9/36 (25%) of group A, 1/31 (0.3%) of group B, 0 (0%) of group C and 3/36 (8.3%) of group D. No subgingival samples were positive for H. pylori. There was a statistically higher prevalence of H. pylori in groups A and D when compared to B and C (p<0.05). CONCLUSION H. pylori was detected in the supragingival plaque, but not in the subgingival plaque, of individuals with periodontal disease and upper gastric diseases. There was an association between the supragingival colonization of H. pylori and oral hygiene parameters such as the presence of plaque and gingival bleeding.


Archives of Oral Biology | 2009

Higher levels of salivary MUC5B and MUC7 in individuals with gastric diseases who harbor Helicobacter pylori

Denise Gomes da Silva; Roy H. Stevens; Jacyara Maria Brito Macedo; Raphael Hirata; Amanda Chaves Pinto; Luciano Marques Alves; Enno C. I. Veerman; Eduardo Muniz Barretto Tinoco

OBJECTIVE The aim of the present study was to assess the salivary levels of MUC5B and MUC7 in individuals with dyspeptic disease and Helicobacter pylori (H. pylori) in the stomach, compared to individuals without dyspeptic disease. METHODS 30 individuals with dyspeptic disease, who underwent endoscopy for upper gastrointestinal complaints at Hospital Pedro Ernesto-RJ, Brasil and tested positive for H. pylori, and 23 controls with no dyspeptic disease, with mean age 53.5+/-4.4 years, were included in the study. Saliva samples and 3 antral biopsy were taken for PCR analysis and histologic examination. In addition, saliva samples were tested by ELISA with F2 monoclonal antibody and EU7A antibody against MUC7, to determine MUC5B and MUC7 levels, prior to endoscopic examination. The expression pattern of the proteins was quantified by comparison to a pooled saliva sample of 19 healthy volunteers. RESULTS MUC5B and MUC7 salivary levels were higher in the individuals with dyspeptic disease than in controls (p<0.0001). 33.3% (9/30) of the dyspeptic individuals and 0% of the controls had H. pylori in the oral cavity. CONCLUSIONS Individuals with gastric diseases, with H. pylori in the stomach, showed higher levels of salivary H. pylori receptors-MUC5B and MUC7-than individuals without gastric diseases. These results suggest that higher levels of specific salivary mucins could be useful as risk indicators for infection by H. pylori.


Journal of Oral Science | 2015

Effectiveness of full- and partial-mouth disinfection on halitosis in periodontal patients

Léo Guimarães Soares; Lisiane Castagna; Sérgio de Carvalho Weyne; Denise Gomes da Silva; Márcio Eduardo Vieira Falabella; Eduardo Muniz Barretto Tinoco

To compare the effectiveness of full- and partial-mouth disinfection for halitosis control, patients were assigned to treatment with full-mouth therapy (complete scaling and root planing in one stage within 24 h) or conventional therapy in quadrants (scaling and root planing performed by quadrant over a period of 4 weeks) (n = 90 for each group). Both groups were then subdivided: half the patients scraped their tongue daily and half did not. The patients were then evaluated by halimeter, organoleptic testing, and tongue coating index. Halimeter evaluation showed greater reduction of sulfide gases after full-mouth therapy than after conventional therapy (P < 0.001). However, organoleptic testing and the tongue coating index showed no difference among the four treatment groups. There was also no difference in relation to tongue scraping. In conclusion, halimeter evaluation showed that the reduction in volatile sulfur compounds was significantly greater after full-mouth therapy than after conventional therapy. However, this difference was not observed in organoleptic evaluation.


Journal of Periodontology | 2016

Periodontal Conditions in Human Immunodeficiency Virus-Positive Patients Under Highly Active Antiretroviral Therapy From a Metropolitan Area of Rio De Janeiro.

Luis Paulo Diniz Barreto; Marcela Melo dos Santos; Bruno da Silva Gomes; Cristiane C. Lamas; Denise Gomes da Silva; Carina Maciel Silva-Boghossian; Léo Guimarães Soares; Márcio Eduardo Vieira Falabella

BACKGROUND The aim of this study is to evaluate the periodontal status and the presence of opportunistic oral lesions in human immunodeficiency virus-positive (HIV+) patients under highly active antiretroviral therapy (HAART) and their association with cluster of differentiation (CD)4+ and CD4+ nadir T-cell counts and viral load levels. METHODS Clinical periodontal parameters and the presence of opportunistic oral lesions along with records of CD4+ counts and viral load levels were evaluated in 29 individuals (16 females; mean age: 42.7 years) with previous serologic diagnosis of HIV, from the acquired immunodeficiency syndrome program of the Health Center of Duque de Caxias, Rio de Janeiro, Brazil. RESULTS All individuals presented gingivitis or periodontitis. A higher non-significant prevalence of periodontitis was found in smokers (93.8%) compared with non-smokers (76.9%). A significant weak positive correlation was observed between CD4+ counts and missing teeth (ρ = 0.380, P <0.05), CD4+ nadir and periodontal diagnosis (ρ = 0.418, P <0.005), and CD4+ nadir and moderate probing depth (PD) (ρ = 0.424, P <0.05). When only non-smokers were analyzed, a significant moderate positive association was found between viral load and moderate clinical attachment level (CAL) (ρ = 0.638, P <0.05), CD4+ nadir and diagnosis (ρ = 0.586, P <0.05), and CD4+ nadir and moderate CAL (ρ = 0.680, P <0.05). Analysis considering only smokers found no correlations between serologic parameters and demographic or clinical parameters. CONCLUSIONS The current investigation demonstrates that HIV+ individuals under HAART presents a high prevalence of mild to moderate periodontal disease. Viral load levels, CD4+ nadir, and CD4+ counts may present a weak to moderate correlation to the number of missing teeth, periodontal diagnosis, moderate PD, and moderate CAL, which may also reflect some effect of these systemic conditions on the periodontal status.


Acta odontologica latinoamericana : AOL | 2012

Prevalence of actinic cheilitis in a population of agricultural sugarcane workers.

Ana Maria De Oliveira Miranda; Léo Guimarães Soares; Thiago de Miranda Ferrari; Denise Gomes da Silva; Márcio Eduardo Vieira Falabella; Eduardo Muniz Barretto Tinoco


Perionews | 2011

Avaliação clínica de um dentifrício à base de dióxido de cloro na redução dos compostos sulfurados voláteis

Roberto Luiz Guaitolini; Léo Guimarães Soares; Sérgio de Carvalho Weyne; Eduardo Muniz Barreto Tinoco; Márcio Eduardo Vieira Falabella; Denise Gomes da Silva


Perionews | 2010

Recobrimento radicular com enxerto gengival livre

Léo Guimarães Soares; Roberto Luiz Guaitolini; Celso Renato de Souza Resende; Márcio Eduardo Vieira Falabella; Denise Gomes da Silva; Eduardo Muniz Barreto Tinoco


Perionews | 2009

A utilização de enxaguatórios bucais na redução da halitose

Léo Guimarães Soares; Márcio Eduardo Vieira Falabella; Henrique Guilherme de Castro Teixeira; Eduardo Muniz Barretto Tinoco; Denise Gomes da Silva

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Márcio Eduardo Vieira Falabella

Universidade Federal de Juiz de Fora

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Léo Guimarães Soares

Rio de Janeiro State University

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Enno C. I. Veerman

Academic Center for Dentistry Amsterdam

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Carina Maciel Silva-Boghossian

Federal University of Rio de Janeiro

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Rodolpho M. Albano

Rio de Janeiro State University

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