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Black AP, Anjos JS, Cardozo L, Carmo FL, Dolenga CJ, Nakao LS, de Carvalho Ferreira D, Rosado A, Carraro Eduardo JC, Mafra D. Does Low-Protein Diet Influence the Uremic Toxin Serum Levels From the Gut Microbiota in Nondialysis Chronic Kidney Disease Patients? J Ren Nutr 2018; 28:208-214. [PMID: 29439931 DOI: 10.1053/j.jrn.2017.11.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/23/2017] [Accepted: 11/28/2017] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES To evaluate the effects of low-protein diet (LPD) on uremic toxins and the gut microbiota profile in nondialysis chronic kidney disease (CKD) patients. DESIGN AND METHODS Longitudinal study with 30 nondialysis CKD patients (stage 3-4) undergoing LPD for 6 months. Adherence to the diet was evaluated based on the calculation of protein equivalent of nitrogen appearance from the 24-hour urine analysis. Good adherence to LPD was considered when protein intake was from 90% to 110% of the prescribed amount (0.6 g/kg/day). Food intake was analyzed by the 24-hour recall method. The anthropometric, biochemical and lipid profile parameters were measured according to standard methods. Uremic toxin serum levels (indoxyl sulfate, p-cresyl sulfate, indole-3-acetic acid) were obtained by reversed-phase high-performance liquid chromatography (RP-HPLC). Fecal samples were collected to evaluate the gut microbiota profile through polymerase chain reaction and denaturing gradient gel electrophoresis. Statistical analysis was performed by the SPSS 23.0 program software. RESULTS Patients who adhered to the diet (n = 14) (0.7 ± 0.2 g/kg/day) presented an improvement in renal function (nonsignificant) and reduction in total and low-density lipoprotein cholesterol (183.9 ± 48.5-155.7 ± 37.2 mg/dL, P = .01; 99.4 ± 41.3-76.4 ± 33.2 mg/dL, P = .01, respectively). After 6 months of nutricional intervention, p-cresyl sulfate serum levels were reduced significantly in patients who adhered to the LPD (19.3 [9.6-24.7] to 15.5 [9.8-24.1] mg/L, P = .03), and in contrast, the levels were increased in patients who did not adhere (13.9 [8.0-24.8] to 24.3 [8.1-39.2] mg/L, P = .004). In addition, using the denaturing gradient gel electrophoresis technique, it was observed change in the intestinal microbiota profile after LPD intervention in both groups, and the number of bands was positively associated with protein intake (r = 0.44, P = .04). CONCLUSION LPD seems be a good strategy to reduce the uremic toxins production by the gut microbiota in nondialysis CKD patients.
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Affiliation(s)
- Ana Paula Black
- Post Graduation Program in Medical Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil.
| | - Juliana S Anjos
- Post Graduation Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Ludmila Cardozo
- Post Graduation Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Flávia L Carmo
- Institute of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Carla J Dolenga
- Basic Pathology Department, Federal University of Paraná (UFPR), Curitiba-PR, Brazil
| | - Lia S Nakao
- Basic Pathology Department, Federal University of Paraná (UFPR), Curitiba-PR, Brazil
| | | | - Alexandre Rosado
- Institute of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | | | - Denise Mafra
- Post Graduation Program in Medical Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil; Post Graduation Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
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Borges NA, Carmo FL, Stockler-Pinto MB, de Brito JS, Dolenga CJ, Ferreira DC, Nakao LS, Rosado A, Fouque D, Mafra D. Probiotic Supplementation in Chronic Kidney Disease: A Double-blind, Randomized, Placebo-controlled Trial. J Ren Nutr 2017; 28:28-36. [PMID: 28888762 DOI: 10.1053/j.jrn.2017.06.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 06/19/2017] [Accepted: 06/19/2017] [Indexed: 01/24/2023] Open
Abstract
OBJECTIVE The objective of the study was to evaluate the effects of probiotic supplementation on the gut microbiota profile and inflammatory markers in chronic kidney disease patients undergoing maintenance hemodialysis (HD). DESIGN AND METHODS This was a randomized, double-blind, placebo-controlled study. Forty-six HD patients were assigned to receive 1 of 2 treatments: probiotic (n = 23; Streptococcus thermophilus, Lactobacillus acidophilus e Bifidobacterialongum, 90 billion colony-forming units per day) or placebo (n = 23) daily for 3 months. Blood and feces were collected at baseline and after intervention. The inflammatory markers (C-reactive protein and interleukin-6) were analyzed by immunoenzymatic assay (enzyme-linked immunosorbent assay). Uremic toxins plasma levels (indoxyl sulfate, p-cresyl sulfate, and indole-3-acetic acid) were obtained by Reversed-Phase High-Performance Liquid Chromatography. Routine laboratory parameters were measured by standard techniques. Fecal pH was measured by the colorimetric method, and the gut microbiota profile was assessed by Denaturing Gradient Gel Electrophoresis analysis. RESULTS Sixteen patients remained in the probiotic group (11 men, 53.6 ± 11.0 year old, 25.3 ± 4.6 kg/m2) and 17 in the placebo group (10 men, 50.3 ± 8.5 year old, 25.2 ± 5.7 kg/m2). After probiotic supplementation there was a significant increase in serum urea (from 149.6 ± 34.2 mg/dL to 172.6 ± 45.0 mg/dL, P = .02), potassium (from 4.4 ± 0.4 mmol/L to 4.8 ± 0.4 mmol/L, P = .02), and indoxyl sulfate (from 31.2 ± 15.9 to 36.5 ± 15.0 mg/dL, P = .02). The fecal pH was reduced from 7.2 ± 0.8 to 6.5 ± 0.5 (P = .01). These parameters did not change significantly in placebo group. Changes in the percentage delta (Δ) between groups were exhibited with no statistical differences observed. The inflammatory markers and gut profile were not altered by supplementation. CONCLUSIONS Aprobiotic supplementation failed to reduce uremic toxins and inflammatory markers. Therefore, probiotic therapy should be chosen with caution in HD patients. Further studies addressing probiotic therapy in chronic kidney disease patients are needed.
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Affiliation(s)
- Natália A Borges
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil; Medical Sciences Graduate Program, Federal University Fluminense (UFF), Niterói-RJ, Brazil.
| | - Flávia L Carmo
- Institute of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Milena B Stockler-Pinto
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Jessyca S de Brito
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Carla J Dolenga
- Basic Pathology Department, Federal University of Paraná (UFPR), Curitiba-PR, Brazil
| | - Dennis C Ferreira
- Faculty of Dentistry, Veiga de Almeida University, Rio de Janeiro, Brazil
| | - Lia S Nakao
- Basic Pathology Department, Federal University of Paraná (UFPR), Curitiba-PR, Brazil
| | - Alexandre Rosado
- Institute of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Denis Fouque
- Department of Nephrology, Centre Hospitalier Lyon Sud, Univ Lyon, UCBL, Inserm Carmen, CENS, F-69622 Lyon, France
| | - Denise Mafra
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil; Medical Sciences Graduate Program, Federal University Fluminense (UFF), Niterói-RJ, Brazil
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Barros AF, Borges NA, Ferreira DC, Carmo FL, Rosado AS, Fouque D, Mafra D. Is there interaction between gut microbial profile and cardiovascular risk in chronic kidney disease patients? Future Microbiol 2016; 10:517-26. [PMID: 25865191 DOI: 10.2217/fmb.14.140] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
AIM To evaluate the gut microbial profile in chronic kidney disease (CKD) patients and evaluate the possible relationship with inflammation and cardiovascular risk. PATIENTS & METHODS Markers inflammation plasma and bacterial community profile (denaturing gradient gel electrophoresis) were analyzed. RESULTS The average number of bands was not different in healthy individuals and CKD patients. The number of bands was negatively associated with plasma levels of VCAM-1 in patients. Flavobacteriaceae bacterium and Listeria monocytogenes were found in patients and Lachnospiraceae bacterium and Butyrivibrio crossotus in healthy individuals. CONCLUSION Although CKD patients did not present altered gut microbial profile, the sequencing of bands suggested a different microbiota between groups. The result suggests a possible relationship between gut microbiota and cardiovascular risk in CKD patients.
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Affiliation(s)
- Amanda F Barros
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói-RJ, Brazil
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Ferreira DC, Gonçalves LS, Siqueira JF, Carmo FL, Santos HF, Feres M, Figueiredo LC, Soares GM, Rosado AS, dos Santos KRN, Colombo APV. Subgingival bacterial community profiles in HIV-infected Brazilian adults with chronic periodontitis. J Periodontal Res 2015; 51:95-102. [PMID: 26040412 DOI: 10.1111/jre.12287] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND OBJECTIVE To compare the subgingival microbial diversity between non-HIV-infected and HIV-infected individuals with chronic periodontitis using denaturing gradient gel electrophoresis (DGGE). MATERIAL AND METHODS Thirty-two patients were selected: 11 were HIV-infected and 21 were non-HIV-infected, and all had chronic periodontitis. Periodontal measurements included probing depth, clinical attachment level, visible supragingival biofilm and bleeding on probing. Subgingival biofilm samples were collected from periodontal sites (50% with probing depth ≤ 4 mm and 50% with probing depth ≥ 5 mm) and whole-genomic-amplified DNA was obtained. The DNA samples were subjected to amplification of a 16S rRNA gene fragment using universal bacterial primers, followed by DGGE analysis of the amplified gene sequences. RESULTS The non-HIV-infected group presented higher mean full-mouth visible supragingival biofilm (p = 0.004), bleeding on probing (p = 0.006), probing depth (p < 0.001) and clinical attachment level (p = 0.001) in comparison with the HIV-infected group. DGGE analysis revealed 81 distinct bands from all 33 individuals. Banding profiles revealed a higher diversity of the bacterial communities in the subgingival biofilm of HIV-infected patients with chronic periodontitis. Moreover, cluster and principal component analyses demonstrated that the bacterial community profiles differed between these two conditions. High interindividual and intra-individual variability in banding profiles were observed for both groups. CONCLUSION HIV-infected patients with chronic periodontitis present greater subgingival microbial diversity. In addition, the bacterial communities associated with HIV-infected and non-HIV-infected individuals are different in structure.
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Affiliation(s)
- D C Ferreira
- Department of Endodontics and Molecular Microbiology Laboratory, Estácio de Sá University, Rio de Janeiro, Brazil
| | - L S Gonçalves
- Department of Endodontics and Molecular Microbiology Laboratory, Estácio de Sá University, Rio de Janeiro, Brazil
| | - J F Siqueira
- Department of Endodontics and Molecular Microbiology Laboratory, Estácio de Sá University, Rio de Janeiro, Brazil
| | - F L Carmo
- Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - H F Santos
- Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - M Feres
- Dental Research Division, Department of Periodontology, Guarulhos University, Guarulhos, Brazil
| | - L C Figueiredo
- Dental Research Division, Department of Periodontology, Guarulhos University, Guarulhos, Brazil
| | - G M Soares
- Dental Research Division, Department of Periodontology, Guarulhos University, Guarulhos, Brazil
| | - A S Rosado
- Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - K R N dos Santos
- Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A P V Colombo
- Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Bezerra TM, Ferreira DC, Carmo FL, Pinheiro R, Leite DCA, Cavalcante FS, Belinho RA, Peixoto RS, Rosado AS, dos Santos KRN, Castro GFBA. Herpesvirus in the oral cavity of children with leukaemia and its impact on the oral bacterial community profile. J Clin Pathol 2015; 68:222-8. [DOI: 10.1136/jclinpath-2014-202668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Carmo FL, Santos HF, Peixoto RS, Rosado AS, Araujo FV. Tank bromeliad water: similar or distinct environments for research of bacterial bioactives? Braz J Microbiol 2014; 45:185-92. [PMID: 24948929 PMCID: PMC4059294 DOI: 10.1590/s1517-83822014000100024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 04/01/2013] [Indexed: 11/24/2022] Open
Abstract
The Atlantic Rainforest does not have a uniform physiognomy, its relief determines different environmental conditions that define the composition of its flora and fauna. Within this ecosystem, bromeliads that form tanks with their leaves hold water reservoirs throughout the year, maintaining complex food chains, based mainly on autotrophic and heterotrophic bacteria. Some works concluded that the water held by tank bromeliads concentrate the microbial diversity of their ecosystem. To investigate the bacterial diversity and the potential biotechnology of these ecosystems, tank bromeliads of the Neoregelia cruenta species from the Atlantic Rainforest in Brazil were used as models for this research. Bacteria isolated from these models were tested for production of bioactive compounds. DGGE of the water held by tank bromeliads was performed in different seasons, locations and sun exposure to verify whether these environmental factors affect bacterial communities. The DGGE bands profile showed no grouping of bacterial community by the environmental factors tested. Most of the isolates demonstrated promising activities in the tests performed. Collectively, these results suggest that tank bromeliads of the N. cruenta species provide important habitats for a diverse microbial community, suggesting that each tank forms a distinct micro-habitat. These tanks can be considered excellent sources for the search for new enzymes and/or new bioactive composites of microbial origin.
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Affiliation(s)
- F L Carmo
- Departamento de Microbiologia Geral Instituto de Microbiologia Professor Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil ; Programa de Pós-Graduação em Biotecnologia Vegetal Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil
| | - H F Santos
- Departamento de Microbiologia Geral Instituto de Microbiologia Professor Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil
| | - R S Peixoto
- Departamento de Microbiologia Geral Instituto de Microbiologia Professor Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil
| | - A S Rosado
- Departamento de Microbiologia Geral Instituto de Microbiologia Professor Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil
| | - F V Araujo
- Departamento de Ciências Faculdade de Formação de Professores Universidade do Estado do Rio de Janeiro Rio de JaneiroRJ Brazil
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Sodré V, Caetano VS, Rocha RM, Carmo FL, Medici LO, Peixoto RS, Rosado AS, Reinert F. Physiological aspects of mangrove (Laguncularia racemosa) grown in microcosms with oil-degrading bacteria and oil contaminated sediment. Environ Pollut 2013; 172:243-249. [PMID: 23064202 DOI: 10.1016/j.envpol.2012.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 08/23/2012] [Accepted: 09/08/2012] [Indexed: 06/01/2023]
Abstract
To assess the severity of oil spills on mangroves, diagnosis of the vegetation health is crucial. Some aspects of photosynthesis such as photochemical efficiency and leaf pigment composition together with the level of oxidative stress may constitute reliable indicators for vegetation health. To test this approach 14 month old Laguncularia racemosa were contaminated with 5 L m(-2) of the marine fuel oil MF-380 and treated with an oil degrading bacterial consortium in microcosms. Contamination resulted in a 20% decrease in shoot dry weight after 128 days. Photochemical efficiency, pigment content, catalase and ascorbate peroxidase remained unchanged. Multivariate ordination of DGGE microbial community fingerprints revealed a pronounced separation between the oil contaminated and the non-contaminated samples. Further studies are necessary before physiological parameters can be recommended as indicators for plant's health in oil polluted mangroves.
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Affiliation(s)
- Vanessa Sodré
- Laboratório de Ecofisiologia Vegetal, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Brazil
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Paiva SS, Siqueira JF, Rôças IN, Carmo FL, Ferreira DC, Curvelo JAR, Soares RM, Rosado AS. Supplementing the Antimicrobial Effects of Chemomechanical Debridement with Either Passive Ultrasonic Irrigation or a Final Rinse with Chlorhexidine: A Clinical Study. J Endod 2012; 38:1202-6. [DOI: 10.1016/j.joen.2012.06.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 06/15/2012] [Accepted: 06/20/2012] [Indexed: 02/02/2023]
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Santos HF, Carmo FL, Leite DCA, Jesus HE, Maalouf PDC, Almeida C, Soriano AU, Altomari D, Suhett L, Vólaro V, Valoni E, Francisco M, Vieira J, Rocha R, Sardinha BL, Mendes LB, João RR, Lacava B, Jesus RF, Sebastian GV, Pessoa A, van Elsas JD, Rezende RP, Pires DO, Duarte G, Castro CB, Rosado AS, Peixoto RS. Comparison of different protocols for the extraction of microbial DNA from reef corals. Braz J Microbiol 2012; 43:517-27. [PMID: 24031859 PMCID: PMC3768815 DOI: 10.1590/s1517-83822012000200012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2011] [Accepted: 06/07/2012] [Indexed: 02/03/2023] Open
Abstract
This study aimed to test different protocols for the extraction of microbial DNA from the coral Mussismilia harttii. Four different commercial kits were tested, three of them based on methods for DNA extraction from soil (FastDNA SPIN Kit for soil, MP Bio, PowerSoil DNA Isolation Kit, MoBio, and ZR Soil Microbe DNA Kit, Zymo Research) and one kit for DNA extraction from plants (UltraClean Plant DNA Isolation Kit, MoBio). Five polyps of the same colony of M. harttii were macerated and aliquots were submitted to DNA extraction by the different kits. After extraction, the DNA was quantified and PCR-DGGE was used to study the molecular fingerprint of Bacteria and Eukarya. Among the four kits tested, the ZR Soil Microbe DNA Kit was the most efficient with respect to the amount of DNA extracted, yielding about three times more DNA than the other kits. Also, we observed a higher number and intensities of DGGE bands for both Bacteria and Eukarya with the same kit. Considering these results, we suggested that the ZR Soil Microbe DNA Kit is the best adapted for the study of the microbial communities of corals.
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Affiliation(s)
- H F Santos
- Laboratório de Ecologia Molecular Microbiana, Universidade Federal do Rio de Janeiro , Rio de Janeiro, RJ , Brasil
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de Paula VA, Ferreira DC, Carmo FL, Rosardio AS, Dos Santos KR, Maia LC, Primo LG. Short communication: polymicrobial community in teeth associated with severe early-childhood caries. Eur Arch Paediatr Dent 2011; 12:264-6. [PMID: 21993067 DOI: 10.1007/bf03262819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM This was to characterise the microbial diversity in the complex dental plaque of children with severe early-childhood caries (S-ECC), using the denaturing gel gradient electrophoresis (DGGE) technique. METHODS The DGGE technique was used as a diagnostic tool to analyse samples from the oral cavity of a patient with S-ECC. Dental plaque samples from a 3-year-old child with S-ECC were taken from the primary central maxillary incisor (biofilm on vestibular surface), primary maxillary molar (biofilm on vestibular surface), primary central maxillary incisor (dentine), primary maxillary molar (dentine) and saliva and then analysed by PCR-DGGE. RESULTS Three bands occurred in all samples, moreover, 86% of similarity was observed in the pattern of bands between incisor and molar teeth biofilm samples, including four similar bands. CONCLUSION DGGE is a valuable tool for differentiating the microbial composition of the oral plaque in S-ECC children.
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Affiliation(s)
- V A de Paula
- Dept. Paediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Brazil.
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Ferreira DC, Rôças IN, Paiva SS, Carmo FL, Cavalcante FS, Rosado AS, Santos KR, Siqueira JF. Viral-bacterial associations in acute apical abscesses. ACTA ACUST UNITED AC 2011; 112:264-71. [DOI: 10.1016/j.tripleo.2011.01.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 01/21/2011] [Accepted: 01/22/2011] [Indexed: 01/30/2023]
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Ferreira DC, Paiva SSM, Carmo FL, Rôças IN, Rosado AS, Santos KRN, Siqueira JF. Identification of herpesviruses types 1 to 8 and human papillomavirus in acute apical abscesses. J Endod 2010; 37:10-6. [PMID: 21146068 DOI: 10.1016/j.joen.2010.09.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Revised: 08/29/2010] [Accepted: 09/19/2010] [Indexed: 12/31/2022]
Abstract
INTRODUCTION It has been suggested that viruses, especially herpesviruses, can play a role in the pathogenesis of marginal and apical periodontitis. This study aimed to detect herpesviruses types 1 to 8, namely herpes simplex virus (HSV-1/2), varicella zoster virus (VZV), Epstein-Barr virus (EBV), human cytomegalovirus (HCMV), human herpesvirus-6 (HHV-6), human herpesvirus-7 (HHV-7), and human herpesvirus-8 (HHV-8) as well as human papillomavirus (HPV) in acute apical abscesses. METHODS Twenty-four samples were taken by aspiration of the purulent exudate from acute apical abscesses. DNA extracted from clinical samples served as a template in single or nested polymerase chain reaction (PCR) assays for the detection of the target viruses. RESULTS Control PCR reactions with β-globin gene primers revealed that all samples but one had detectable human DNA. Of the 23 abscess samples positive for the β-globin gene, 14 (61%) were positive for at least one of the target human viruses. Thirteen (56.5%) cases had herpesvirus: HHV-8 occurred in 11 (48%), VZV and HHV-6B in two (9%), and HHV-7 and HSV-1/2 in one (4%). EBV and HCMV were not present in any of the examined samples. HPV was detected in three (13%) abscess samples. Viral coinfection was found in five cases, with one case harboring three of the targeted viruses. CONCLUSION A large number of abscess samples were positive for at least one target virus. Unexpectedly, HHV-8 was for the first time detected and in a high prevalence. Papillomavirus and other herpesviruses were also found for the first time in endodontic abscesses. Although these findings suggest an association, the specific role of viruses in the pathogenesis of acute apical abscesses awaits further clarification.
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Affiliation(s)
- Dennis C Ferreira
- Institute of Microbiology Prof Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Alves FRF, Siqueira JF, Carmo FL, Santos AL, Peixoto RS, Rôças IN, Rosado AS. Bacterial community profiling of cryogenically ground samples from the apical and coronal root segments of teeth with apical periodontitis. J Endod 2009; 35:486-92. [PMID: 19345792 DOI: 10.1016/j.joen.2008.12.022] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 12/21/2008] [Accepted: 12/24/2008] [Indexed: 11/25/2022]
Abstract
Bacteria located at the apical part of infected root canals are arguably directly involved in the pathogenesis of apical periodontitis. This study was conducted to profile and further compare the bacterial communities established at the apical and middle/coronal segments of infected root canals. Extracted teeth with attached apical periodontitis lesions were sectioned so as to obtain two root fragments representing the apical third and the coronal two thirds. Root fragments were subjected to a cryogenic grinding approach. DNA was extracted from root powder samples and used as a template for bacterial community profiling using a 16S ribosomal RNA gene-based seminested polymerase chain reaction/denaturing gradient gel electrophoresis approach. The mean number of bands in apical samples from teeth with primary infections was 28, ranging from 18 to 48, whereas in the middle/coronal samples, it was also 28, ranging from 19 to 36. Findings showed that the profile of bacterial community colonizing the apical third of infected root canals is as diverse as that occurring at the middle/coronal thirds. A high variability was observed for both interindividual (samples from the same region but from different patients) and intraindividual (samples from different regions of the same tooth) comparisons. The methodology used to prepare and analyze samples was highly effective in disclosing a previously unanticipated broad diversity of endodontic bacterial communities, especially at the apical part of infected root canals.
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Affiliation(s)
- Flávio R F Alves
- Institute of Microbiology Prof Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Siqueira JF, Rôças IN, Debelian GJ, Carmo FL, Paiva SSM, Alves FRF, Rosado AS. Profiling of root canal bacterial communities associated with chronic apical periodontitis from Brazilian and Norwegian subjects. J Endod 2008; 34:1457-61. [PMID: 19026873 DOI: 10.1016/j.joen.2008.08.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Accepted: 08/24/2008] [Indexed: 02/04/2023]
Abstract
The aim of this study was to compare the bacterial community profiles of the root canal microbiota associated with chronic apical periodontitis from Brazilian and Norwegian patients using the denaturing gradient gel electrophoresis (DGGE) and the ribosomal intergenic spacer analysis (RISA) approaches. DNA extracted from root canal samples was subjected to polymerase chain reaction using primers appropriate for further DGGE or RISA analysis. The resulting banding patterns representative of the bacterial community structures in samples from the two locations were compared. DGGE and RISA fingerprints showed a great interindividual variability in the bacterial community profiles, irrespective of the geographic location of the patient. However, similarities among the bacterial community DGGE profiles revealed the existence of a geography-related pattern.
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Affiliation(s)
- José F Siqueira
- Department of Endodontics and Molecular Microbiology, Estácio de Sá University, Rio de Janeiro, Brazil.
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