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https://www.readbyqxmd.com/read/28319129/changes-in-salivary-microbiota-increase-volatile-sulfur-compounds-production-in-healthy-male-subjects-with-academic-related-chronic-stress
#1
Bruno Dias Nani, Patricia Oliveira de Lima, Fernanda Klein Marcondes, Francisco Carlos Groppo, Gustavo Sattolo Rolim, Antonio Bento Alves de Moraes, Karina Cogo-Müller, Michelle Franz-Montan
OBJECTIVE: To investigate the associations among salivary bacteria, oral emanations of volatile sulfur compounds, and academic-related chronic stress in healthy male subjects. MATERIALS AND METHODS: Seventy-eight healthy male undergraduate dental students were classified as stressed or not by evaluation of burnout, a syndrome attributed to academic-related chronic stress. This evaluation was carried out using the Maslach Burnout Inventory-Student Survey questionnaire...
2017: PloS One
https://www.readbyqxmd.com/read/28317637/pyogenic-liver-abscess-due-to-fusobacterium-nucleatum-in-a-patient-with-liver-hemangiomas
#2
Theodoros Karantanos, Styliani Karanika, Kenechukwu Obiokoye, Meg Sullivan, Christine Phillips, Sonia Ananthakrishnan
No abstract text is available yet for this article.
April 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28304211/furcation-therapy-with-enamel-matrix-derivative-effects-on-the-subgingival-microbiome
#3
Lucas A Queiroz, Renato C V Casarin, Shareef M Dabdoub, Dimitris N Tatakis, Enilson A Sallum, Purnima S Kumar
BACKGROUND: Although enamel matrix derivative (EMD) has been used to promote periodontal regeneration, little is known of its effect on the microbiome. Therefore, this investigation aimed to identify the changes in periodontal microbiome following treatment with EMD using a deep-sequencing approach. METHODS: Thirty-nine patients having mandibular class II buccal furcation defects were randomized to beta-tricalcium-phosphate/hydroxyapatite graft (BONE group), EMD+BONE or EMD alone...
March 17, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28304209/subgingival-microbiota-in-caucasian-patients-with-desquamative-gingivitis-a-cross-sectional-study
#4
Paolo G Arduino, Federica Romano, Danilo Sasia, Roberto Broccoletti, Fulvio Ricceri, Anna Maria Barbui, Silvia Brossa, Raffaella Cipriani, Luca Cricenti, Marco Cabras, Mario Aimetti
BACKGROUND: The presence of epithelial desquamation, erythema, and erosions on the gingival tissue is usually described in literature as desquamative gingivitis (DG). A wide range of autoimmune/dermatological disorders can manifest as DG, although the two more common are oral lichen planus and mucous membrane pemphigoid. The aim of this study was to investigate the prevalence of 11 periodonto-pathogenic microorganisms in DG cases and to compare it with microbiologic status of individuals affected by plaque-induced gingivitis (GI)...
March 17, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28298816/effect-of-gallium-arsenic-laser-on-photosensitized-periodontopathic-anaerobic-organisms-an-in-vitro-study
#5
Setu Mathur, Shaila Veerappa Kothiwale, Buddhi Prakash Nag, Tanu Mathur, Ashoka Bhansali, Rohit Kumar Khatri
BACKGROUND: The mainstay of periodontal therapy is mechanical removal of subgingival plaque. There is considerable interest in supplementing it with the use of antibiotics and antiseptics. Many drawbacks are associated with these adjunctive pharmacological regimens such as development of resistance to antibiotics and disruption of microflora of the gastrointestinal tract. Hence, alternate means of killing subgingival bacteria are clearly desirable. One such method is the use of laser...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28292019/carcinogenesis-mechanisms-of-fusobacterium-nucleatum
#6
REVIEW
Pourya Gholizadeh, Hosein Eslami, Hossein Samadi Kafil
Transformed cells of cancers may be related to stromal cells, immune cells, and some bacteria such as Fusobacterium nucleatum. This review aimed to evaluate carcinogenesis mechanisms of Fusobacterium spp. in the oral cavity, pancreatic and colorectal cancers. These cancers are the three of the ten most prevalence cancer in the worldwide. Recent findings demonstrated that F. nucleatum could be considered as the risk factor for these cancers. The most important carcinogenesis mechanisms of F. nucleatum are chronic infection, interaction of cell surface molecules of these bacteria with immune system and stromal cells, immune evasion and immune suppression...
March 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28288582/the-proteins-of-fusobacterium-spp-involved-in-hydrogen-sulfide-production-from-l-cysteine
#7
Amina Basic, Madeleine Blomqvist, Gunnar Dahlén, Gunnel Svensäter
BACKGROUND: Hydrogen sulfide (H2S) is a toxic foul-smelling gas produced by subgingival biofilms in patients with periodontal disease and is suggested to be part of the pathogenesis of the disease. We studied the H2S-producing protein expression of bacterial strains associated with periodontal disease. Further, we examined the effect of a cysteine-rich growth environment on the synthesis of intracellular enzymes in F. nucleatum polymorphum ATCC 10953. The proteins were subjected to one-dimensional (1DE) and two-dimensional (2DE) gel electrophoresis An in-gel activity assay was used to detect the H2S-producing enzymes; Sulfide from H2S, produced by the enzymes in the gel, reacted with bismuth forming bismuth sulfide, illustrated as brown bands (1D) or spots (2D) in the gel...
March 14, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28286386/brain-abscess-potentially-resulting-from-odontogenic-focus-report-of-three-cases-and-a-literature-review
#8
Masaya Akashi, Kazuhiro Tanaka, Junya Kusumoto, Shungo Furudoi, Kohkichi Hosoda, Takahide Komori
INTRODUCTION: Odontogenic foci can rarely cause intracranial infection. Hematogenous spread is considered to be the most important pathophysiological mechanism of intracranial infection of odontogenic origin. To investigate the oral origin of intracranial infections, oral surgeons should understand the underlying mechanisms by which oral bacteria spread to the central nervous system. However, there have been very few reports of intracranial infection resulting from odontogenic infection...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28285095/quantitative-proteomic-analysis-of-extracellular-matrix-extracted-from-mono-and-dual-species-biofilms-of-fusobacterium-nucleatum-and-porphyromonas-gingivalis
#9
Marwan Mansoor Ali Mohammed, Veronika Kuchařová Pettersen, Audun H Nerland, Harald G Wiker, Vidar Bakken
The Gram-negative bacteria Fusobacterium nucleatum and Porphyromonas gingivalis are members of a complex dental biofilm associated with periodontal disease. In this study, we cultured F. nucleatum and P. gingivalis as mono- and dual-species biofilms, and analyzed the protein composition of the biofilms extracellular polymeric matrix (EPM) by high-resolution liquid chromatography-tandem mass spectrometry. Label-free quantitative proteomic analysis was used for identification of proteins and sequence-based functional characterization for their classification and prediction of possible roles in EPM...
March 9, 2017: Anaerobe
https://www.readbyqxmd.com/read/28265505/key-bacterial-families-clostridiaceae-erysipelotrichaceae-and-bacteroidaceae-are-related-to-the-digestion-of-protein-and-energy-in-dogs
#10
Emma N Bermingham, Paul Maclean, David G Thomas, Nicholas J Cave, Wayne Young
BACKGROUND: Much of the recent research in companion animal nutrition has focussed on understanding the role of diet on faecal microbiota composition. To date, diet-induced changes in faecal microbiota observed in humans and rodents have been extrapolated to pets in spite of their very different dietary and metabolic requirements. This lack of direct evidence means that the mechanisms by which microbiota influences health in dogs are poorly understood. We hypothesised that changes in faecal microbiota correlate with physiological parameters including apparent macronutrient digestibility...
2017: PeerJ
https://www.readbyqxmd.com/read/28260599/peritonsillar-abscess-clinical-aspects-of-microbiology-risk-factors-and-the-association-with-parapharyngeal-abscess
#11
REVIEW
Tejs Ehlers Klug
PTA is a collection of pus located between the tonsillar capsule and the pharyngeal constrictor muscle. It is considered a complication of acute tonsillitis and is the most prevalent deep neck infection (approximately 2000 cases annually in Denmark) and cause of acute admission to Danish ENT departments. Teenagers and young adults are most commonly affected and males may predominate over females. However, no studies of age- and gender-stratified incidence rates have previously been published. Furthermore, smoking may be associated with increased risk of peritonsillar abscess (PTA) development, although the magnitude of the association has not been estimated...
March 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28259058/community-analysis-of-dental-plaque-and-endotracheal-tube-biofilms-from-mechanically-ventilated-patients
#12
Poala J Marino, Matt P Wise, Ann Smith, Julian R Marchesi, Marcello P Riggio, Michael A O Lewis, David W Williams
PURPOSE: Mechanically ventilated patients are at risk for developing ventilator-associated pneumonia, and it has been reported that dental plaque provides a reservoir of respiratory pathogens that may aspirate to the lungs and endotracheal tube (ETT) biofilms. For the first time, metataxonomics was used to simultaneously characterize the microbiome of dental plaque, ETTs, and non-directed bronchial lavages (NBLs) in mechanically ventilated patients to determine similarities in respective microbial communities and therefore likely associations...
February 16, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28257873/bacterial-invasion-of-the-uterus-and-oviducts-in-bovine-pyometra
#13
C C Karstrup, H G Pedersen, T K Jensen, J S Agerholm
Pyometra is a common disease of cattle that causes infertility and thereby financial losses to the cattle industry. Bacteria involved in the development and progression of pyometra have been investigated by microbial culture but their tissue invading abilities, which is an important aspect of bacterial pathogenicity and development of lesions, have not been investigated. Bacterial invasion of the uterus and oviducts was studied in 21 cows diagnosed with pyometra at the time of slaughter by applying fluorescence in situ hybridization using probes targeting 16S ribosomal RNA of Fusobacterium necrophorum, Porphyromonas levii, Trueperella pyogenes and the overall bacterial domain Bacteria...
April 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28253398/otogenic-temporomandibular-arthritis-in-children
#14
Alice Burgess, Charlotte Celerier, Sylvain Breton, Thierry Van den Abbeele, Natacha Kadlub, Nicolas Leboulanger, Noël Garabedian, Vincent Couloigner
Importance: Septic arthritis of the temporomandibular joint (SATMJ) is a very rare but potentially severe complication of pediatric middle ear infections because it presents risks of TMJ ankylosis. Objective: To describe the clinical, radiological, biological, and microbiological characteristics and evolution of SATMJ complicating middle ear infections (otogenic SATMJ) in children. Design, Setting, and Participants: This multicenter retrospective study included all children younger than 18 years referred between January 1, 2005, and December 31, 2015, for otogenic SATMJ or for TMJ ankylosis that occurred a few months to a few years after an acute mastoiditis...
March 2, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28243433/a-rare-case-of-fusobacterium-necrophorum-liver-abscesses
#15
Faris Hannoodi, Hussam Sabbagh, Zain Kulairi, Sarwan Kumar
Liver abscesses are an uncommon disease that can present with vague symptoms. Fusobacterium necrophorum causing liver abscesses is a rare condition and only a few cases have been reported. An 88-year-old female presented to her primary care physician with one week of fevers, night sweats, chills, fatigue and vague right upper quadrant abdominal pain. She denied nausea, vomiting, constipation, diarrhea and unintentional weight loss. A computed tomography scan of the abdomen showed two liver abscesses in the right lobe as well as extensive diverticulosis...
January 11, 2017: Clinics and Practice
https://www.readbyqxmd.com/read/28237333/presence-and-localization-of-bacteria-in-the-bovine-endometrium-postpartum-using-fluorescence-in-situ-hybridization
#16
C C Karstrup, J S Agerholm, T K Jensen, L R V Swaro, K Klitgaard, E L Rasmussen, K M Krogh, H G Pedersen
The aim of this study was to investigate bacterial invasiveness of the bovine endometrium during the postpartum period. Fluorescence in situ hybridization was applied to endometrial biopsies using probes for Fusobacterium necrophorum, Porphyromonas levii, Trueperella pyogenes, Escherichia coli and a probe for bacteria in general (the overall domain Bacteria) to determine their tissue localization. Holstein cows were sampled at three time points postpartum (T1: 4-12 days postpartum, T2: 24-32 days postpartum and T3: 46-54 days postpartum)...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28237092/response-to-antiseptic-agents-of-periodontal-pathogens-in-in-vitro-biofilms-on-titanium-and-zirconium-surfaces
#17
M C Sánchez, E Fernández, A Llama-Palacios, E Figuero, D Herrera, M Sanz
OBJECTIVE: The aim of this study was to develop in vitro biofilms on SLA titanium (Ti-SLA) and zirconium oxide (ZrO2) surfaces and to evaluate the effect of antiseptic agents on the number of putative periodontal pathogenic species. METHODS: An in vitro biofilm model was developed on sterile discs of Ti-SLA and ZrO2. Three antiseptic agents [chlorhexidine and cetyl-pyridinium-chloride (CHX/CPC), essential oils (EEOOs) and cetyl-peridinium-chloride (CPC)] were applied to 72-h biofilms, immersing discs during 1min in the antiseptic solution, either with or without mechanical disruption...
February 22, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28223139/the-role-of-il-1-gene-polymorphisms-il1a-il1b-and-il1rn-as-a-risk-factor-in-unsuccessful-implants-retaining-overdentures
#18
Margarida Sampaio Fernandes, Paula Vaz, Ana Cristina Braga, João Carlos Sampaio Fernandes, Maria Helena Figueiral
PURPOSE: Implant-supported overdentures are an alternative predictable rehabilitation method that has a high impact on improving the patient's quality of life. However, some biological complications may interfere with the maintenance and survival of these overdenture implants. The goal of this article was to assess the factors that affect peri-implant success, through a hypothetical prediction model for biological complications of implant overdentures. METHODS: A retrospective observational, prevalence study was conducted in 58 edentulous Caucasian patients rehabilitated with implant overdentures...
February 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28214091/multidonor-intensive-faecal-microbiota-transplantation-for-active-ulcerative-colitis-a-randomised-placebo-controlled-trial
#19
Sudarshan Paramsothy, Michael A Kamm, Nadeem O Kaakoush, Alissa J Walsh, Johan van den Bogaerde, Douglas Samuel, Rupert W L Leong, Susan Connor, Watson Ng, Ramesh Paramsothy, Wei Xuan, Enmoore Lin, Hazel M Mitchell, Thomas J Borody
BACKGROUND: The intestinal microbiota is implicated in the pathogenesis of ulcerative colitis. Faecal microbiota transplantation is a novel form of therapeutic microbial manipulation, but its efficacy in ulcerative colitis is uncertain. We aimed to establish the efficacy of intensive-dosing, multidonor, faecal microbiota transplantation in active ulcerative colitis. METHODS: We conducted a multicentre, double-blind, randomised, placebo-controlled trial at three hospitals in Australia...
February 14, 2017: Lancet
https://www.readbyqxmd.com/read/28199859/structure-of-the-lps-o-chain-from-fusobacterium-nucleatum-strain-10953-containing-sialic-acid
#20
Evgeny Vinogradov, Frank St Michael, Kiyonobu Homma, Ashu Sharma, Andrew D Cox
Fusobacterium nucleatum is an anaerobic bacterium found in the human mouth where it causes periodontitis. Recently, it has been gaining attention as a potential causative agent for colorectal cancer and is strongly linked with pregnancy complications including pre-term and still births. Little is known about virulence factors of this organism and thus we have initiated studies to examine the bacterial surface glycochemistry. Consistent with a recent paper suggesting that F. nucleatum strain 10593 can synthesize sialic acid, a staining technique identified sialic acid on the bacterial surface...
February 22, 2017: Carbohydrate Research
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