keyword
MENU ▼
Read by QxMD icon Read
search

Oral biofilm

keyword
https://www.readbyqxmd.com/read/28549260/identification-of-oral-cavity-biofilm-forming-bacteria-and-determination-of-their-growth-inhibition-by-acacia-arabica-tamarix-aphylla-l-and-melia-azedarach-l-medicinal-plants
#1
Muhammad Khalid, Danial Hassani, Muhammad Bilal, Zahid Ali Butt, Muhammad Hamayun, Ayaz Ahmad, Danfeng Huang, Anwar Hussain
OBJECTIVE: Biofilms are complex, multi-species bacterial communities that colonize the oral cavity in the form of plaque and are known to cause dental caries and periodontal disease. Present study demonstrated the potential of three selected medicinal plants against isolated and identified dental biofilm forming strains. METHODS: Pathogenic bacteria from dental biofilms were isolated, cultured, identified by phylogenetic analysis using PCR-based 16S ribosomal RNA (or 16S rRNA) nucleotide sequences and were analyzed for their biofilm forming capability...
May 18, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28547773/dental-and-periodontal-health-and-microbiological-and-salivary-conditions-in-patients-with-or-without-diabetes-undergoing-haemodialysis
#2
Gerhard Schmalz, Nora Schiffers, Sandra Schwabe, Radovan Vasko, Gerhard A Müller, Rainer Haak, Rainer F Mausberg, Dirk Ziebolz
OBJECTIVE: The aim of this cross-sectional study was to evaluate the dental and periodontal health, as well as the microbiological and salivary conditions, of patients with and without diabetes mellitus (DM) who are receiving haemodialysis. METHODS: One-hundred and fifty-nine haemodialysis patients were included and divided into groups according to the pre-existing diabetes status: DM or no DM. The oral examination included dental findings and assessment of the periodontal situation...
June 2017: International Dental Journal
https://www.readbyqxmd.com/read/28536781/oral-health-status-in-adult-patients-with-newly-diagnosed-acute-leukemia
#3
Rilana Busjan, Justin Hasenkamp, Gerhard Schmalz, Rainer Haak, Lorenz Trümper, Dirk Ziebolz
BACKGROUND: The aim of this cross-sectional study was to evaluate the oral health of adult patients with newly diagnosed acute leukemia. METHODS: Patients with initially diagnosed acute myeloid (AML) or lymphocytic (ALL) leukemia and a matched healthy control (HC) group were included. The oral investigation comprised inspection of the oral mucosa; the decayed (D), missing (M), and filled (F) teeth (DMF-T) index; and a detailed periodontal status. Subgingival biofilm samples were analyzed (polymerase chain reaction) for the presence of selected potentially periodontal pathogenic bacteria...
May 23, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28533236/antibacterial-and-antibiofilm-activities-of-a-novel-synthetic-cyclic-lipopeptide-against-cariogenic-streptococcus-mutans-ua159
#4
Kyung R Min, Adriana Galvis, Brandon Williams, Ramanjaneyulu Rayala, Predrag Cudic, Dragana Ajdic
Despite continuous efforts to control cariogenic dental biofilms, very few effective antimicrobial treatments exist. In this study, we characterized the activity of a novel synthetic cyclic lipopeptide 4 (CLP-4), derived from fusaricidin, against the cariogenic pathogen Streptococcus mutans UA159. We determined CLP-4's minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), spontaneous resistance frequency, and we performed time-kill assays. Additionally, we assessed CLP-4's potential to inhibit biofilm formation (MBIC) and eradicate pre-formed biofilms (MBEC)...
May 22, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28530844/developing-a-new-generation-of-antimicrobial-and-bioactive-dental-resins
#5
L Cheng, K Zhang, N Zhang, M A S Melo, M D Weir, X D Zhou, Y X Bai, M A Reynolds, H H K Xu
Dental caries is prevalent, and secondary caries causes restoration failures. This article reviews recent studies on developing a new generation of bioactive resins with anticaries properties. Extensive effects were made to develop new antimicrobial composites, bonding agents, and other resins containing quaternary ammonium methacrylates to suppress plaque buildup and bacterial acid production. The effects of alkyl chain length and charge density and the antimicrobial mechanisms for chlorhexidine, nano-silver, quaternary ammonium methacrylates, and protein-repellent agents were discussed...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28526864/a-broad-spectrum-bactericidal-lipopeptide-with-anti-biofilm-properties
#6
Ohad Meir, Fadia Zaknoon, Uri Cogan, Amram Mor
Previous studies of the oligoacyllysyl (OAK) series acyl-lysyl-lysyl-aminoacyl-lysine-amide, suggested their utility towards generating robust linear lipopeptide-like alternatives to antibiotics, although to date, none exhibited potent broad-spectrum bactericidal activity. To follow up on this premise, we produced a new analog (C14KKc12K) and investigated its properties in various media. Mechanistic studies suggest that C14KKc12K uses a non-specific membrane-disruptive mode of action for rapidly reducing viability of Gram-negative bacteria (GNB) similarly to polymyxin B (PMB), a cyclic lipopeptide used as last resort antibiotic...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526799/acquired-resistance-to-macrolides-in-pseudomonas-aeruginosa-from-cystic-fibrosis-patients
#7
Muhammad-Hariri Mustafa, Shaunak Khandekar, Michael M Tunney, J Stuart Elborn, Barbara C Kahl, Olivier Denis, Patrick Plésiat, Hamidou Traore, Paul M Tulkens, Francis Vanderbist, Françoise Van Bambeke
Cystic fibrosis (CF) patients receive chronic treatment with macrolides for their antivirulence and anti-inflammatory properties. We, however, previously showed that Pseudomonas aeruginosa, considered as naturally resistant to macrolides, becomes susceptible when tested in a eukaryotic medium rather than a conventional broth.We therefore looked for specific macrolide resistance determinants in 333 CF isolates from four European CF centres in comparison with 48 isolates from patients suffering from hospital-acquired pneumonia (HAP)...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28526794/raffinose-induces-biofilm-formation-by-streptococcus-mutans-in-low-concentrations-of-sucrose-by-increasing-production-of-extracellular-dna-and-fructan
#8
Ryo Nagasawa, Tsutomu Sato, Hidenobu Senpuku
Streptococcus mutans is the primary etiological agent of dental caries and causes tooth decay by forming a firmly attached biofilm on tooth surfaces. Biofilm formation is induced by the presence of sucrose, which is a substrate for the synthesis of extracellular polysaccharides, but not in the presence of oligosaccharides. Nonetheless, in this study, we found that raffinose, which is an oligosaccharide with an intestinal regulatory function and antiallergic effect, induced biofilm formation by S. mutans in a mixed culture with sucrose which was at concentrations less than those required to induce biofilm formation directly...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28526785/effects-of-arginine-on-growth-virulence-gene-expression-and-stress-tolerance-by-streptococcus-mutans
#9
Brinta Chakraborty, Robert A Burne
Streptococcus mutans is a common constituent of oral biofilms and a primary etiologic agent of human dental caries. The bacteria associated with dental caries have a potent ability to produce organic acids from dietary carbohydrates and to grow and metabolize in acidic conditions. In contrast, many commensal bacteria produce ammonia through the arginine deiminase system (ADS), which moderates the pH of oral biofilms. Arginine metabolism by the ADS is a significant deterrent to the initiation and progression of dental caries...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28517974/the-impact-of-docosahexaenoic-acid-therapy-on-subgingival-plaque-microbiota
#10
Asghar Z Naqvi, Lin Mu, Hatice Hasturk, Thomas E Van Dyke, Kenneth J Mukamal, J Max Goodson
OBJECTIVE: The aim of this study was to evaluate the impact of docosahexaenoic acid (DHA) with low-dose aspirin therapy on periodontal bacterial profile in patients with periodontitis. BACKGROUND: We recently showed that oral DHA + aspirin therapy reduces periodontal pocket depth and local inflammatory mediators in gingival crevicular fluid (GCF) among patients with untreated chronic periodontal disease. Whether or not DHA + aspirin therapy influences specific bacterial burden in this setting is unknown...
May 18, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28513133/antibacterial-property-of-a-polyethylene-glycol-grafted-dental-material
#11
Liying Peng, Li Chang, Xi Liu, Jiuxiang Lin, Hongliang Liu, Bing Han, Shutao Wang
Dental materials often cause bacterial adhesion and promote bacterial biofilm formation, which brings a series of long-standing and significant problems in oral health. However, the current development of antibacterial research in dental devices is limited by the lack of materials endowed with good antibacterial properties against oral bacteria. Here, we present a new strategy for reducing the initial adhesion of bacterial on dental biomaterials by chemically bonding long-chain polyethylene glycol. Our work represents an important step toward solving the problem of bacterial accumulation on dental devices...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28513096/is-the-oral-fungal-pathogen-candida-albicans-a-cariogen
#12
REVIEW
Daniel Freitas Alves Pereira, Chaminda Jayampath Seneviratne, Cristiane Yumi Koga-Ito, Lakshman Perera Samaranayake
Pathobiology of dental caries is complex. Data from recent molecular microbiologic studies have further redefined the role of the oral microbiome in the etiology of dental caries. This new information challenges the conventional view on the hegemony of classic cariogenic prokaryotes such as Streptococcus mutans in caries aetiology, and raises the intriguing possibility of the participation of the eukaryotic oral fungal pathogen Candida in the caries process. The virulence attributes of Candida species such as their acidogenicity and aciduric nature, the ability to develop profuse biofilms, ferment and assimilate dietary sugars, and produce collagenolytic proteinases are all indicative of their latent cariogenic potential...
May 17, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28512783/effect-of-silver-loaded-pmma-on-streptococcus-mutans-in-a-drip-flow-reactor
#13
Dustin L Williams, R Tyler Epperson, Jeffery P DeGrauw, Mattias B Nielsen, Nicholas B Taylor, Ryan D Jolley
Orthodontic retention has been proposed as a life-long commitment for patients who desire to maintain straight teeth. However, the presence of foreign material increases risk of bacterial colonization and caries formation, of which Streptococcus mutans is a key contributor. Multiple studies have assessed the ability of silver to be added to base plate material and resist attachment of S. mutans. However, it does not appear that long term washout in connection with biofilm growth under physiologically relevant conditions has been taken into consideration...
May 16, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28511507/evaluation-of-c-reactive-protein-and-fibrinogen-in-patients-with-chronic-and-aggressive-periodontitis-a-clinico-biochemical-study
#14
Swaroop Chandy, Kiran Joseph, Anila Sankaranarayanan, Annie Issac, George Babu, Bobby Wilson, Jumol Joseph
INTRODUCTION: Periodontal disease is characterised by chronic infection and inflammation in periodontal tissues leading to destruction of alveolar bone with subsequent tooth loss. Periodontal infections are the result of an interaction between tooth associated microbial biofilms and the host defences. Periodontal pathogens can affect local and systemic immune and inflammatory responses. AIM: The aim of the present study was to evaluate serum C-Reactive Protein (CRP), plasma fibrinogen and peripheral blood levels in healthy subjects, chronic and aggressive periodontitis patients...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28508242/preclinical-study-of-a-cost-effective-photodynamic-therapy-protocol-for-treating-oral-candidoses
#15
Nathalia Ramos da Silva, Daniela Garcia Ribeiro, João Paulo Mardegan Issa, Karla Bonfá, Michelli Sobreiro Menezes, Viviane de Cássia Oliveira, Raphael Freitas de Souza
Photodynamic therapy (PDT) is a promising treatment for oral candidoses. Its use as an alternative to antifungals prevents several adverse effects, including microbial resistance. However, most PDT protocols do not employ devices and consumables commonly available in dental practice, thus influencing treatment affordability. This study aimed to determine the efficacy of a PDT method based on light curing units' blue LEDs combined to a plaque-disclosing composition (5% erythrosine) against C. albicans in culture and in a murine model of oral candidosis...
May 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28502178/diverted-total-synthesis-of-carolacton-inspired-analogs-yields-three-distinct-phenotypes-in-streptococcus-mutans-biofilms
#16
Amy E Solinski, Alexander B Koval, Richard S Brzozowski, Kelly R Morrison, Americo J Fraboni, Carrie E Carson, Anisa R Eshraghi, Guangfeng Zhou, Robert G Quivey, Vincent A Voelz, Bettina A Buttaro, William M Wuest
The oral microbiome is a dynamic environment inhabited by both commensals and pathogens. Among these is Streptococcus mutans, the causative agent of dental caries, the most prevalent childhood disease. Carolacton has remarkably specific activity against S. mutans, causing acid-mediated cell death during biofilm formation; however, its complex structure limits its utility. Herein, we report the diverted total synthesis and biological evaluation of a rationally designed library of simplified analogs that unveiled three unique biofilm phenotypes further validating the role of natural product synthesis in the discovery of new biological phenomena...
May 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28502123/novel-method-for-the-depletion-of-cariogenic-bacteria-using-dextranomer-microspheres
#17
Lauren Mashburn-Warren, Jennifer S Downey, Steven D Goodman
Streptococcus mutans is recognized as one of the key contributors to the dysbiotic state that results in dental caries. While existing treatment strategies reduce the incidence of tooth decay, they also eliminate both the cariogenic and beneficial microbes. Here we introduce a novel treatment alternative using Sephadex, cross-linked dextranomer microspheres (DMs), typically used for gel filtration chromatography. In addition DM beads can be used for affinity purification of glucosyltransferases (GTFs) from S...
May 14, 2017: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/28494407/streptococcus-mutans-membrane-lipid-composition-virulence-factors-and-structural-parameters
#18
M A Bojanich, R O Calderón
OBJECTIVE: The aim of the present work was to analyze whether the location of the dental biofilm was associated with shifts in the membrane fatty acid profile, and whether such shifts could affect certain virulence factors of strains of Streptococcus mutans. DESIGN: An experimental study was conducted to assess the behavior of S. mutans strains isolated from dental biofilm collected from sound and carious smooth and occlusal surfaces of the oral cavity of children...
April 21, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28493889/characterization-of-a-novel-antibiofilm-effect-of-nitric-oxide-releasing-aspirin-ncx-4040-on-candida-albicans-isolates-from-denture-stomatitis-patients
#19
Francisco Madariaga-Venegas, Roberto Fernández-Soto, Luisa Fernanda Duarte, Nicole Suarez, Daniela Delgadillo, José A Jara, Ricardo Fernández-Ramires, Blanca Urzúa, Alfredo Molina-Berríos
Candida albicans biofilms play a key role in denture stomatitis, one of the most common oral pathologies in elderly people. Because biofilms are highly resistant to antifungals, new pharmacological strategies are needed. Aspirin and nitric oxide-donor molecules have both shown antibiofilm effects on C. albicans, making them promising candidates for treatment. In this study, we evaluated the antifungal/antibiofilm effect of a nitric-oxide releasing aspirin (NO-ASA) on C. albicans isolates from denture stomatitis patients in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28492362/microbiota-analysis-of-biofilms-on-experimental-abutments-mimicking-dental-implants-an-in-vivo-model
#20
Berta Cortés-Acha, Rui Figueiredo, Ramón Seminago, Francisco J Roig, Carlos Llorens, Eduard Valmaseda-Castellón
BACKGROUND: The microbiota colonizing dental implants has been said to be similar to the microbiome surrounding teeth. In the absence of inflammation, a biofilm with pathological bacteria can cover implant surfaces exposed to the oral cavity, due for example, to a remodeling process. The aim of the present study was to identify the microbiota surrounding exposed dental implants in patients with and without a history of periodontitis through a deep-sequencing approach. METHODS: An experimental abutment with the same surface and structure as a commercially available dental implant was used...
May 11, 2017: Journal of Periodontology
keyword
keyword
78956
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"