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Fusobacterium nucleatum

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https://www.readbyqxmd.com/read/29352461/clinical-and-microbiological-evaluation-of-the-effect-of-lactobacillus-reuteri-in-the-treatment-of-mucositis-and-peri-implantitis-a-triple-blind-randomized-clinical-trial
#1
M Galofré, D Palao, M Vicario, J Nart, D Violant
BACKGROUND AND OBJECTIVE: Oral probiotics appear to improve the treatment of periodontal diseases but there is limited evidence on their efficacy in the treatment of peri-implant diseases. The objective of the present study was to evaluate, clinically and microbiologically, the effect of the oral probiotic, Lactobacillus reuteri Prodentis, as adjuvant to non-surgical mechanical therapy in implants with mucositis or peri-implantitis, placed in patients with a history of periodontal disease...
January 19, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29343611/structural-insights-into-the-catalytic-mechanism-of-cysteine-hydroxyl-lyase-from-the-hydrogen-sulfide-producing-oral-pathogen-fusobacterium-nucleatum
#2
Yuichiro Kezuka, Tetsuo Ishida, Yasuo Yoshida, Takamasa Nonaka
Hydrogen sulfide (H2S) plays important roles in the pathogenesis of periodontitis. Oral pathogens typically produce H2S from L-cysteine in addition to pyruvate and NH4+ However, fn1055 from Fusobacterium nucleatum subsp. nucleatum ATCC 25586 encodes a pyridoxal 5'-phosphate (PLP)-dependent enzyme that catalyzes the production of H2S and L-serine from L-cysteine and H2O, an unusual cysteine (hydroxyl) lyase reaction (β-replacement reaction). To reveal the reaction mechanism, the crystal structure of substrate-free Fn1055 was determined...
January 17, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29340343/what-is-the-impact-of-epstein-barr-virus-in-peri-implant-infection
#3
Luigi Canullo, Paolo Pesce, Daniele Botticelli, Ugo Covani, Sasha Jankovic, Tanja Jovanovic, Mia Rakic
PURPOSE: To compare the qualitative and quantitative profile of Epstein-Barr virus (EBV) at external and internal implant surfaces between participants with peri-implantitis and healthy peri-implant tissues and to quantitatively assess the relation between EBV and periopathogens inside the microbiologic profile associated with peri-implantitis. MATERIALS AND METHODS: Microbiologic specimens were retrieved from 84 patients wearing 190 implants to estimate the levels of EBV and 10 periopathogens in the peri-implant pocket and internal-implant connection using quantitative polymerase chain reaction...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29340028/high-resolution-microbiome-profiling-uncovers-fusobacterium-nucleatum-lactobacillus-gasseri-johnsonii-and-lactobacillus-vaginalis-associated-to-oral-and-oropharyngeal-cancer-in-saliva-from-hpv-positive-and-hpv-negative-patients-treated-with-surgery-and-chemo
#4
Rafael Guerrero-Preston, James Robert White, Filipa Godoy-Vitorino, Arnold Rodríguez-Hilario, Kelvin Navarro, Herminio González, Christina Michailidi, Anne Jedlicka, Sierra Canapp, Jessica Bondy, Amanda Dziedzic, Barbara Mora-Lagos, Gustavo Rivera-Alvarez, Carmen Ili-Gangas, Priscilla Brebi-Mieville, William Westra, Wayne Koch, Hyunseok Kang, Luigi Marchionni, Young Kim, David Sidransky
Microbiome studies show altered microbiota in head and neck squamous cell carcinoma (HNSCC), both in terms of taxonomic composition and metabolic capacity. These studies utilized a traditional bioinformatics methodology, which allows for accurate taxonomic assignment down to the genus level, but cannot accurately resolve species level membership. We applied Resphera Insight, a high-resolution methodology for 16S rRNA taxonomic assignment that is able to provide species-level context in its assignments of 16S rRNA next generation sequencing (NGS) data...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29327500/multiplex-polymerase-chain-reaction-detection-of-selected-bacterial-species-from-symptomatic-and-asymptomatic-non-vital-teeth-with-primary-endodontic-infections
#5
Smita Pattanshetty, Vijayalakshmi S Kotrashetti, Kishore Bhat, Ramakant S Nayak, Pradeep Somannavar, Madhu Pujar
AIM: The aim of the present study was to investigate the presence of selective anaerobic microorganisms in primary root canal infections of symptomatic and asymptomatic non-vital teeth with periapical pathosis using multiplex polymerase chain reaction. METHODS: A total of 100 root canal samples (50 from symptomatic and 50 from asymptomatic teeth) were obtained from patients with primary endodontic infections. DNA extracted from the samples was amplified by using specific primers for the 16S rRNA gene of each bacterium, and semiquantification was done to analyze the prevalence of microorganisms and their correlation to clinical features...
January 11, 2018: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/29317709/increased-abundance-of-clostridium-and-fusobacterium-in-gastric-microbiota-of-patients-with-gastric-cancer-in-taiwan
#6
Yung-Yu Hsieh, Shui-Yi Tung, Hung-Yu Pan, Chih-Wei Yen, Huang-Wei Xu, Ying-Jhen Lin, Yi-Fang Deng, Wan-Ting Hsu, Cheng-Shyong Wu, Chin Li
Helicobacter pylori is recognised as a main risk factor for gastric cancer. However, approximately half of the patients with gastritis are negative for H. pylori infection, and the abundance of H. pylori decreases in patients with cancer. In the current study, we profiled gastric epithelium-associated bacterial species in patients with gastritis, intestinal metaplasia, and gastric cancer to identify additional potential pathogenic bacteria. The overall composition of the microbiota was similar between the patients with gastritis and those with intestinal metaplasia...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29315353/correction-transcriptome-profiling-analysis-of-senescent-gingival-fibroblasts-in-response-to-fusobacterium-nucleatum-infection
#7
Sun-Hee Ahn, Seongmin Cheon, Chungoo Park, Jong-Hee Lee, Seok-Woo Lee, Tae-Hoon Lee
[This corrects the article DOI: 10.1371/journal.pone.0188755.].
2018: PloS One
https://www.readbyqxmd.com/read/29307651/acute-periprosthetic-joint-infection-due-to-fusobacterium-nucleatum-in-a-non-immunocompromised-patient-failure-using-a-debridement-antibiotics-implant-retention-approach
#8
Pablo S Corona, Mayli Lung, Dolors Rodriguez-Pardo, Carles Pigrau, Francisco Soldado, Carles Amat, Luis Carrera
Fusobacterium nucleatum is an obligately anaerobic gram-negative rod, a component of the microbiome of the oropharynx and the gastrointestinal and urogenital tracts, causing an array of human infections which often include periodontal pathologies. As far as we know, there are no previous publications about acute periprosthetic joint infection due to Fusobacterium sp.; we report the first case in the medical literature of an aggressive, acute knee prosthetic infection due to F. nucleatum in a non-immunocompromised patient, unsuccessfully treated with a DAIR approach (Debridement + Antibiotics + Implant Retention)...
January 4, 2018: Anaerobe
https://www.readbyqxmd.com/read/29306533/microbial-analysis-of-endodontic-infections-in-root-filled-teeth-with-apical-periodontitis-before-and-after-irrigation-using-pyrosequencing
#9
Homan Zandi, Anne K Kristoffersen, Dag Ørstavik, Isabela N Rôças, José F Siqueira, Morten Enersen
INTRODUCTION: The root canal microbiota in root-filled teeth with post-treatment apical periodontitis before and after chemomechanical instrumentation and irrigation with either 1% sodium hypochlorite (NaOCl) or 2% chlorhexidine digluconate were analyzed by using the pyrosequencing method. METHODS: Samples from 10 root-filled teeth with apical periodontitis undergoing retreatment were taken before (S1) and after (S2) preparation using irrigation with either NaOCl (n = 5) or 2% chlorhexidine digluconate (n = 5)...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29299190/evaluation-of-microbiota-associated-with-herpesviruses-in-active-sites-of-generalized-aggressive-periodontitis
#10
Claudio Passariello, Pierangelo Gigola, Luca Testarelli, Monica Puttini, Serena Schippa, Stefano Petti
Aims: The present study aimed to investigate microbial patterns associated with disease progression and coinfection by different Herpesviruses in generalized aggressive periodontitis (GAP). Methods: Microbiological samples were obtained from active (AS) and non-active (n-AS) sites in 165 subjects affected by GAP and were analyzed for 40 bacterial species by the Checkerboard DNA-DNA Hybridization technique and for Herpes simplex 1 (HSV-1), Human Cytomegalovirus (CMV), and Epstein Bar virus (EBV) by PCR...
April 2017: Annali di Stomatologia
https://www.readbyqxmd.com/read/29285324/focus-on-periodontal-disease-and-colorectal-carcinoma
#11
REVIEW
D Lauritano, L Sbordone, M Nardone, A Iapichino, L Scapoli, F Carinci
Diagnosis of focal disease, the theory that the human oral microbial (HOM) could affect the onset and development of systemic diseases, was very popular in the past, but the lack of scientific evidence has led to the abandonment of this idea. Interestingly, increasing evidence over the past 3 or so decades suggests that HOM can indeed serve as a reservoir for systemic dissemination of pathogenic bacteria and their toxins in distant body sites, favouring the developments of malignant tumours. Malignant tumours are complex communities of oncogenically transformed cells with aberrant genomes, associated non-neoplastic cells including immune and stromal cells, and sometimes HOM, including bacteria and viruses...
July 2017: Oral & Implantology
https://www.readbyqxmd.com/read/29276776/periodontitis-in-ch%C3%A3-diak-higashi-syndrome-an-altered-immunoinflammatory-response
#12
V Thumbigere Math, P Rebouças, P A Giovani, R M Puppin-Rontani, R Casarin, L Martins, L Wang, K Krzewski, W J Introne, M J Somerman, F H Nociti, K R Kantovitz
Chédiak-Higashi syndrome (CHS), a rare autosomal recessive disorder caused by mutations in the lysosomal trafficking regulator gene (LYST), is associated with aggressive periodontitis. It is suggested that LYST mutations affect the toll-like receptor (TLR)-mediated immunoinflammatory response, leading to frequent infections. This study sought to determine the periodontal status of patients with classic (severe) and atypical (milder) forms of CHS and the immunoregulatory functions of gingival fibroblasts in CHS patients...
January 2018: JDR Clinical and Translational Research
https://www.readbyqxmd.com/read/29273882/the-oral-microbiome-the-relevant-reservoir-for-acute-pediatric-appendicitis
#13
Carlotta Blod, Nadine Schlichting, Sara Schülin, Anne Suttkus, Nicole Peukert, Catalina Suzana Stingu, Christian Hirsch, Wieland Elger, Martin Lacher, Ulf Bühligen, Steffi Mayer
PURPOSE: The oral microbiome has been related to numerous extra oral diseases. Recent studies detected a high abundance of oral bacteria in inflamed appendices in pediatric patients. To elucidate the role of oral bacteria in acute pediatric appendicitis, we studied the oral and appendiceal microbiome of affected children compared to healthy controls. METHODS: Between January and June 2015, 21 children undergoing appendectomy for acute appendicitis and 28 healthy controls were prospectively enrolled in the study...
December 22, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29250491/human-primary-epithelial-cells-acquire-an-epithelial-mesenchymal-transition-phenotype-during-long-term-infection-by-the-oral-opportunistic-pathogen-porphyromonas-gingivalis
#14
Jungnam Lee, JoAnn S Roberts, Kalina R Atanasova, Nityananda Chowdhury, Kyudong Han, Özlem Yilmaz
Porphyromonas gingivalis is a host-adapted oral pathogen associated with chronic periodontitis that successfully survives and persists in the oral epithelium. Recent studies have positively correlated periodontitis with increased risk and severity of oral squamous cell carcinoma (OSCC). Intriguingly, the presence of P. gingivalis enhances tumorigenic properties independently of periodontitis and has therefore been proposed as a potential etiological agent for OSCC. However, the initial host molecular changes induced by P...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29234378/antibiofilm-and-anti-inflammatory-activities-of-houttuynia-cordata-decoction-for-oral-care
#15
Yasuko Sekita, Keiji Murakami, Hiromichi Yumoto, Kouji Hirao, Takashi Amoh, Natsumi Fujiwara, Katsuhiko Hirota, Hideki Fujii, Takashi Matsuo, Yoichiro Miyake, Yoshiki Kashiwada
Dental biofilms that form in the oral cavity play a critical role in the pathogenesis of several infectious oral diseases, including dental caries, periodontal disease, and oral candidiasis. Houttuynia cordata (HC, Saururaceae) is a widely used traditional medicine, for both internal and external application. A decoction of dried HC leaves (dHC) has long been consumed as a health-promoting herbal tea in Japan. We have recently reported that a water solution of HC poultice ethanol extract (wHCP) exerts antimicrobial and antibiofilm effects against several important oral pathogens...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29232563/immunologic-burden-links-periodontitis-to-acute-coronary-syndrome
#16
John M Liljestrand, Susanna Paju, Milla Pietiäinen, Kåre Buhlin, G Rutger Persson, Markku S Nieminen, Juha Sinisalo, Päivi Mäntylä, Pirkko J Pussinen
BACKGROUND AND AIMS: Periodontitis, a common polymicrobial inflammatory disease in the tooth supporting tissues, is a risk factor for coronary artery disease. One of the proposed underlying mechanisms is the systemic immune response to periodontal infection. We studied how serum antibodies against seven periodontal pathogens and their subgingival levels associate with each other, periodontitis, and coronary artery disease. METHODS: The Parogene cohort included 505 Finnish patients (mean age 63 y) who underwent coronary angiography, and clinical and radiographic oral examinations...
January 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29220094/osteocytes-play-an-important-role-in-experimental-periodontitis-in-healthy-and-diabetic-mice-through-expression-of-rankl
#17
Dana T Graves, Ahmed Alshabab, Mayra Laino Albiero, Marcelo Mattos, Joice Dias Correa, Shanshan Chen, Yang Yang
AIM: Periodontitis results from bacteria induced inflammation. A key cytokine, RANKL is produced by a number of cell types. The cellular source of RANKL critical for periodontitis has not been established. METHODS: We induced periodontal bone loss by oral inoculation of Porphyromonas gingivalis and Fusobacterium nucleatum in both normoglycemic and streptozotocin induced type 1 diabetic mice. Experimental transgenic mice had osteocyte specific deletion of floxed RANKL mediated by DMP-1 driven Cre recombinase...
December 8, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29217301/-gut-microbiota-what-impact-on-colorectal-carcinogenesis-and-treatment
#18
REVIEW
Antoine Bruneau, Minh-Tam Baylatry, Anne Christine Joly, Harry Sokol
The gut microbiota, composed of 1014 microorganisms, is now considered as a "hidden organ", regarding to its digestive, metabolic and immune functions, which are helpful to its host. For the last 15 years, advances in molecular biology have highlighted the association of gut microbiota dysbiosis with several diseases, including colorectal cancer. An increased abundance of some bacteria (including Fusobacterium nucleatum, Bacteroides fragilis, Escherichia coli) is associated with cancer, whereas others seem to be protective (Faecalibacterium prausnitzii)...
December 4, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/29216848/anterior-sacral-meningocele-infected-with-fusobacterium-in-a-patient-with-recently-diagnosed-colorectal-carcinoma-a-case-report
#19
Anne K Braczynski, Marc A Brockmann, Torben Scholz, Jan-Philipp Bach, Jörg B Schulz, Simone C Tauber
BACKGROUND: Anterior sacral meningoceles are rare, and usually occur with other malformations of the posterior lower spine. While these are more frequently reported in pediatric cohorts, we report a case in an elderly woman. CASE PRESENTATION: We report on a 71 year-old woman with a recently diagnosed colorectal adenocarcinoma who presented with a severe bacterial meningitis. The cerebrospinal fluid cell count revealed a pleocytosis of 80,000 cells/μl and a severe disturbance of the blood-brain-barrier...
December 8, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29214046/high-resolution-bacterial-16s-rrna-gene-profile-meta-analysis-and-biofilm-status-reveal-common-colorectal-cancer-consortia
#20
Julia L Drewes, James R White, Christine M Dejea, Payam Fathi, Thevambiga Iyadorai, Jamuna Vadivelu, April C Roslani, Elizabeth C Wick, Emmanuel F Mongodin, Mun Fai Loke, Kumar Thulasi, Han Ming Gan, Khean Lee Goh, Hoong Yin Chong, Sandip Kumar, Jane W Wanyiri, Cynthia L Sears
Colorectal cancer (CRC) remains the third most common cancer worldwide, with a growing incidence among young adults. Multiple studies have presented associations between the gut microbiome and CRC, suggesting a link with cancer risk. Although CRC microbiome studies continue to profile larger patient cohorts with increasingly economical and rapid DNA sequencing platforms, few common associations with CRC have been identified, in part due to limitations in taxonomic resolution and differences in analysis methodologies...
2017: NPJ Biofilms and Microbiomes
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