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      Bacteroides forsythus: sensibilidade a antimicrobianos em amostras de pacientes portadores de periodontite Translated title: Bacteroides forsythus: sensitivity to antimicrobial agents in samples from patients with periodontitis

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          Abstract

          Os autores realizaram teste de sensibilidade antimicrobiana in vitro (técnica de diluição em ágar) para 105 cepas de B. forsythus obtidas de pacientes portadores de periodontite. De acordo com o teste realizado, o microrganismo demonstrou ser sensível ao metronidazol (100% das cepas testadas) e à amoxicilina (94% das cepas testadas), enquanto 72% e 65% das cepas foram susceptíveis à tetraciclina e ciprofloxacina, respectivamente. O metronidazol e a amoxicilina parecem ser os antimicrobianos indicados para o tratamento de infecções periodontais nas quais B. forsythus seja o patógeno predominante.

          Translated abstract

          An in vitro antimicrobial sensitivity test (technique of agar dilution) was carried out for 105 clinical isolates of B. forsythus from patients with periodontitis. Metronidazole and amoxicillin were the most efficient drugs and, thus, are indicated for the treatment of periodontal infections in which this microorganism is the most prevalent pathogen.

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          Most cited references18

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          Systemic antibiotic therapy in periodontics.

          A J van Winkelhoff, T E Rams, J Slots (1996)
          Article 0 comments Cited 54 times – based on 0 reviews     Review now
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            Sialidase (neuraminidase) activity among gram-negative anaerobic and capnophilic bacteria.

            S. J. Hillier, Bernard Moncla, R. P. Braham (1990)
            A filter paper spot test with 2'-(4-methylumbelliferyl)-alpha-D-N-acetylneuraminic acid as a substrate was used to study the prevalence of sialidase activity among gram-negative anaerobic and capnophilic bacteria. A total of 567 isolates representing four genera of obligate anaerobes and four genera of capnophilic organisms was tested. Sialidase activity was detected in 94% of 66 isolates from the Bacteroides fragilis group, 98% of 66 B. bivius isolates, and all isolates of the following species (number of isolates follows species name): B. capillosus, 4; B. levii, 2; B. denticola, 22; B. loescheii, 23; B. melaninogenicus, 32; B. forsythus, 44; and B. buccalis, 2. However, sialidase activity was detected in only 29% of 7 B. buccae isolates, 79% of 14 B. disiens isolates, and 55% of 11 B. oralis isolates. Sialidase activity was not detected among any of 13 isolates of B. gracilis, 12 isolates of B. ureolyticus, 61 isolates of B. intermedius, or 26 isolates of B. corporis. Porphyromonas (Bacteroides) asaccharolytica (20 isolates) and P. endodontalis (8 isolates) did not demonstrate sialidase activity, while 25 isolates of P. gingivalis were sialidase positive. Sialidase activity was found in 10 (100%) of 10 isolates of Capnocytophaga ochracea of C. sputigena but not in any of 4 C. gingivalis isolates. Other gram-negative anaerobic or capnophilic bacteria, including the following, were negative for sialidase activity: Fusobacterium nucleatum, 39 isolates; Wolinella recta, 19 isolates; Eikenella corrodens, 17 isolates; Haemophilus aphrophilus, 10 isolates; and Actinobacillus actinomycetemcomitans, 10 isolates. These data demonstrate sialidase activity in several species of the genera Bacteroides and Porphyromonas and suggest that this characteristic may be useful for identification.
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              Microbial composition and pattern of antibiotic resistance in subgingival microbial samples from patients with refractory periodontitis.

              M A LISTGARTEN, V Leroy Young, Eric Lai (1993)
              A series of 993 subgingival microbial samples sent to a diagnostic microbiology laboratory included 196 samples that could be identified as compatible with a clinical diagnosis of refractory or recurrent periodontitis. In descending order of prevalence the associated microbiota included Bacteroides forsythus (84%), spirochetes (83%), motile rods (76%), Fusobacterium species (68%), Porphyromonas gingivalis (63%), Campylobacter rectus (47%), Capnocytophaga species (38%), Prevotella intermedia (23%), Peptostreptococcus micros (18%), Actinobacillus actinomycetemcomitans (16%), Candida (14%), enteric rods (9%), Staphylococcus species, not including aureus (5.6%). Eikenella corrodens (3%), Staphylococcus aureus (1.5%), and Enterococcus species (< 1%). Antibiotic resistance to tetracycline, penicillin G, or metronidazole was particularly noticeable for enteric rods, Fusobacterium species, Capnocytophaga species, Staphylococcus, and Actinobacillus actinomycetemcomitans. It was largely absent for Campylobacter rectus. No antibiotic sensitivity data were obtained for Porphyromonas gingivalis or Bacteroides forsythus, as these species were detected by immunofluorescence. The results indicate that a substantial number of microorganisms associated with refractory periodontitis are variably resistant to commonly-used antibiotics. Diagnostic microbiology must be considered an essential adjunct to the therapist faced with periodontal lesions refractory to conventional treatment.
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                Author and article information

                Journal
                Journal ID (publisher-id): pob
                Title: Pesquisa Odontológica Brasileira
                Abbreviated Title: Pesqui. Odontol. Bras.
                Publisher: Sociedade Brasileira de Pesquisa Odontológica e Faculdade de Odontologia da Universidade de São Paulo (São Paulo, SP, Brazil )
                ISSN (Print): 1517-7491
                Publication date (Print and electronic): March 2001
                Volume: 15
                Issue: 1
                Pages: 47-50
                Affiliations
                [02] orgnameUniversidade de São Paulo orgdiv1Faculdade de Odontologia
                [03] Ann Arbor orgnameUniversidade de Michigan
                [01] orgnameUniversidade de São Paulo orgdiv1Faculdade de Odontologia
                Article
                Publisher ID: S1517-74912001000100009 Publisher ID: S1517-7491(01)01500109
                SO-VID: f0cafafd-da39-40a7-8760-2122675efdb4
                License:

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                Date revision received : 15 August 2000
                Date accepted : 23 November 2000
                Date received : 22 February 2000
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 18, Pages: 4
                Product

                SciELO Brazil

                Categories
                Subject: Periodontia

                Keywords: Antibióticos,Bacteróides,Periodontite,Antibiotics,Periodontitis,Bacteroides
                Data availability:
                Keywords: Antibióticos, Bacteróides, Periodontite, Antibiotics, Periodontitis, Bacteroides

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