نتایج جستجو برای: prevotella denticola

تعداد نتایج: 2454  

Journal: :Infection and immunity 1992
D Grenier

A mutual symbiotic enhancement of growth of Porphyromonas gingivalis and Treponema denticola is described in this report. Brain heart infusion broth supplemented with vitamin K did not support the individual growth of P. gingivalis or T. denticola. However, when inoculated as a mixture, both bacterial species did grow significantly. The growth-stimulating factors produced by P. gingivalis and T...

Journal: :medical journal of islamic republic of iran 0
reza hosseini doust from the research center o/molecular biology, baqiatallah university of medical sciences, tehran, l.r. lran ashraf mohabbati mobarez the department of microbiology, tarbiat modarres university, tehran, i.r. lran.

bacterial vaginosis (bv) has been considered to be the most prevalent infection found in sexually active women. bv is thought to play an important role in the premature rupture of membranes (prom) and preterm birth. preterm delivery accounts for a substantial percentage of low birth weight infants and perinatal mortality and morbidity. bacteroides and prevotella species have been isolated from ...

Journal: :Journal of clinical microbiology 2006
Kaori Iwahara Tomoari Kuriyama Satoshi Shimura David W Williams Maki Yanagisawa Kiyomasa Nakagawa Tadahiro Karasawa

While most bacteria involved in dentoalveolar infection are highly susceptible to penicillin, some Prevotella strains exhibit resistance to this agent through the production of beta-lactamase. The production of beta-lactamase by Prevotella spp. is in turn associated with the expression of the genes cfxA and cfxA2. The aim of the present study was to determine the prevalence of cfxA and cfxA2 in...

Journal: :Clinical oral implants research 2015
Luigi Canullo David Penarrocha-Oltra Claudio Soldini Fabio Mazzocco Maria Penarrocha Ugo Covani

OBJECTIVE To evaluate the bacterial microflora present inside the implant connection and in the peri-implant sulcus fluid of healthy implants, and to analyze the relationships between these harboring sites for four different implant systems after at least 5 years of functional loading. MATERIALS AND METHODS A cross-sectional study was performed involving 40 patients treated with metal-ceramic...

Journal: :The Bulletin of Tokyo Dental College 2010
Akiyo Komiya Ito Kazuyuki Ishihara Sachiyo Tomita Tetsuo Kato Satoru Yamada

Periodontopathic bacteria such as Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Tannerella forsythia, Campylobacter rectus and Treponema denticola play an important role in the initiation and progression of periodontitis. The aim of this investigation was to evaluate the relationship between periodontal clinical parameters and the subgingival profile of periodontopathic bacte...

2015
Sandra Moreno Adriana Jaramillo Beatriz Parra Javier Enrique Botero Adolfo Contreras

INTRODUCTION Porphyromonas gingivalis is associated with periodontitis and exhibit a wide array of virulence factors, including fimbriae which is encoded by the FimA gene representing six known genotypes. OBJETIVE To identify FimA genotypes of P. gingivalis in subjects from Cali-Colombia, including the co-infection with Aggregatibacter actinomycetemcomitans, Treponema denticola, and Tannerell...

Journal: :Infection and immunity 2011
Di Miao J Christopher Fenno John C Timm Nam Eok Joo Yvonne L Kapila

Periodontal disease is a bacterially mediated chronic inflammatory disease that results in destruction of the periodontal ligament (PDL) and alveolar bone that surround and support the dentition. While their precise roles are not well understood, periodontal pathogens, including Treponema denticola, are believed to initiate the destructive inflammatory responses and dysregulation of tissue home...

Journal: :Journal of bacteriology 1998
K Ishihara H K Kuramitsu T Miura K Okuda

Prolyl-phenylalanine-specific serine protease (dentilisin) is a major extracellular protease produced by Treponema denticola. The gene, prtP, coding for the protease was recently cloned and sequenced (K. Ishihara, T. Miura, H. K. Kuramitsu, and K. Okuda, Infect. Immun. 64:5178-5186, 1996). In order to determine the role of this protease in the physiology and virulence of T. denticola, a dentili...

2013
Sang-Yup Lee Won-Jun Shon WooCheol Lee Seung-Ho Baek Kwang-Shik Bae SungSam Lim

Treponema denticola has long been considered as a periodontal pathogen. Listgarten also reported that spirochetes are conspicuous inhabitants of subgingival plaque in patients with gingivitis and periodontitis. Although this bacteria is well known to be important periodontal pathogens, several studies suggest that spirochetes may be involved in pulpal and periapical infections as well. For inst...

Journal: :Infection and immunity 1999
G Rosen M N Sela R Naor A Halabi V Barak L Shapira

We have recently demonstrated that the periodontopathogenic oral spirochete Treponema denticola possesses membrane-associated lipoproteins in addition to lipooligosaccharide (LOS). The aim of the present study was to test the potential of these oral spirochetal components to induce the production of inflammatory mediators by human macrophages, which in turn may stimulate tissue breakdown as obs...

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