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Streptococcus salivarius

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https://www.readbyqxmd.com/read/28619805/complete-genome-sequences-of-two-human-oral-microbiome-commensals-streptococcus-salivarius-atcc-25975-and-s-salivarius-atcc-27945
#1
Robert R Butler, Jahna T A Soomer-James, Michel Frenette, Jean-François Pombert
Streptococcus salivarius strains are significant contributors to the human oral microbiome. Some possess unique fimbriae that give them the ability to coaggregate and colonize particular oral structures. We present here the complete genomes of Streptococcus salivarius Lancefield K(-)/K(+) strains ATCC 25975 and ATCC 27945, which can and cannot, respectively, produce fimbriae.
June 15, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28571283/estimation-of-dmft-salivary-streptococcus-mutans-count-flow-rate-ph-and-salivary-total-calcium-content-in-pregnant-and-non-pregnant-women-a-prospective-study
#2
Wasim Ismail Kamate, Nupura Aniket Vibhute, Rajendra Krishna Baad
INTRODUCTION: Pregnancy, a period from conception till birth, causes changes in the functioning of the human body as a whole and specifically in the oral cavity that may favour the emergence of dental caries. Many studies have shown pregnant women at increased risk for dental caries, however, specific salivary caries risk factors and the particular period of pregnancy at heightened risk for dental caries are yet to be explored and give a scope of further research in this area. AIM: The aim of the present study was to assess the severity of dental caries in pregnant women compared to non-pregnant women by evaluating parameters like Decayed, Missing, Filled Teeth (DMFT) index, salivary Streptococcus mutans count, flow rate, pH and total calcium content...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28566853/bacteriostatic-effect-of-simvastatin-on-selected-oral-streptococci-in-vitro
#3
Eugene J Whitaker, Abdulaziz Alshammari
CONTEXT AND OBJECTIVE: Simvastatin is a widely used cholesterol-lowering drug, which has been found to have a number of pleiotropic effects. The aim of this study was to evaluate the antimicrobial effectiveness of simvastatin against selected oral streptococci as determined by the minimum inhibitory concentration (MIC). METHODS: Streptococcus mutans, Streptococcus sanguis, Streptococcus anginosus, and Streptococcus salivarius were the test microorganisms. The serial dilution method was used to determine the MIC of simvastatin against these organisms...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28558854/probiotic-yogurt-and-acidified-milk-similarly-reduce-postprandial-inflammation-and-both-alter-the-gut-microbiota-of-healthy-young-men
#4
Kathryn J Burton, Marta Rosikiewicz, Grégory Pimentel, Ueli Bütikofer, Ueli von Ah, Marie-Jeanne Voirol, Antony Croxatto, Sébastien Aeby, Jocelyne Drai, Philip G McTernan, Gilbert Greub, François P Pralong, Guy Vergères, Nathalie Vionnet
Probiotic yogurt and milk supplemented with probiotics have been investigated for their role in 'low-grade' inflammation but evidence for their efficacy is inconclusive. This study explores the impact of probiotic yogurt on metabolic and inflammatory biomarkers, with a parallel study of gut microbiota dynamics. The randomised cross-over study was conducted in fourteen healthy, young men to test probiotic yogurt compared with milk acidified with 2 % d-(+)-glucono-δ-lactone during a 2-week intervention (400 g/d)...
May 31, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28543778/oral-flora-in-acute-stroke-patients-a-prospective-exploratory-observational-study
#5
Elizabeth Boaden, Mary Lyons, Sim K Singhrao, Hazel Dickinson, Michael Leathley, Catherine E Lightbody, Alison McLoughlin, Zarine Khan, Stjohn Crean, Craig Smith, Susan Higham, Caroline Watkins
OBJECTIVE: To describe the bacterial profile of the oral flora during the first 2 weeks following a stroke, examining changes in the condition of the oral cavity and infections. BACKGROUND: Dysphagia is common after a stroke and can lead to aspiration pneumonia. Oral flora changes associated with stroke have been implicated as a possible source of bacteria that can cause systemic infections. MATERIALS AND METHODS: Seventy-seven participants were recruited over a period of 9 months...
May 22, 2017: Gerodontology
https://www.readbyqxmd.com/read/28512279/antimicrobial-potential-of-plant-extracts-and-chemical-fractions-of-sideroxylon-obtusifolium-roem-schult-t-d-penn-on-oral-microorganisms
#6
Thaíse Pd Sampaio, Nathália Ao Cartaxo-Furtado, Ana Cd de Medeiros, Harley S Alves, Pedro L Rosalen, Jozinete V Pereira
AIM: The aim of this study is to evaluate the in vitro antimicrobial activity of plant extracts and chemical fractions of Sideroxylon obtusifolium T.D. Penn on Streptococcus mutans, Streptococcus oralis, Streptococcus salivarius, Streptococcus parasanguinis, and Candida albicans as well as to identify the chemical classes found in the bioactive extracts possessing better activity. MATERIALS AND METHODS: Freeze-dried hydroalcoholic extracts of the bark and leaves (LC and LF respectively) and ethanol extracts of bark and leaves (EC and EF respectively) of S...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28507066/the-microbiome-of-site-specific-dental-plaque-of-children-with-different-caries-status
#7
Vincent P Richards, Andres J Alvarez, Amy R Luce, Molly Bedenbaugh, Mary Mitchell, Robert A Burne, Marcelle M Nascimento
The oral microbiota associated with the initiation and progression of dental caries has yet to be fully characterized. The Human Oral Microbe Identification using Next Generation Sequencing (HOMINGS) was used to analyze the microbiomes of site-specific supragingival dental plaques from children with different caries status. Fifty-five children (2-7 years) were assessed at baseline and 12-months, and grouped as: caries-free (CF), caries-active with enamel lesions (CAE), and caries-active with dentin carious lesions (CA)...
May 15, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28486933/influence-of-chronic-azithromycin-treatment-on-the-composition-of-the-oropharyngeal-microbial-community-in-patients-with-severe-asthma
#8
Guido Lopes Dos Santos Santiago, Guy Brusselle, Kenny Dauwe, Pieter Deschaght, Chris Verhofstede, Dries Vaneechoutte, Ellen Deschepper, Paul Jordens, Guy Joos, Mario Vaneechoutte
BACKGROUND: This study of the oropharyngeal microbiome complements the previously published AZIthromycin in Severe ASThma (AZISAST) clinical trial, where the use of azithromycin was assessed in subjects with exacerbation-prone severe asthma. Here, we determined the composition of the oropharyngeal microbial community by means of deep sequencing of the amplified 16S rRNA gene in oropharyngeal swabs from patients with exacerbation-prone severe asthma, at baseline and during and after 6 months treatment with azithromycin or placebo...
May 10, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28432093/diversity-of-integrative-and-conjugative-elements-of-streptococcus-salivarius-and-their-intra-and-interspecies-transfer
#9
Narimane Dahmane, Virginie Libante, Florence Charron-Bourgoin, Eric Guédon, Gérard Guédon, Nathalie Leblond-Bourget, Sophie Payot
Integrative and Conjugative Elements (ICEs) are widespread chromosomal mobile genetic elements, which can transfer autonomously by conjugation in bacteria. Thirteen ICEs with a conjugation module closely related to that of ICESt3 of Streptococcus thermophilus were characterized in Streptococcus salivarius by whole genome sequencing. Sequence comparison highlighted ICE evolution by shuffling of 3 different integration/excision modules (for integration in the 3' end of fda, rpsI or rpmG genes) with the conjugation module of the ICESt3 subfamily...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28410499/comparing-the-impact-of-ultrafine-particles-from-petrodiesel-and-biodiesel-combustion-to-bacterial-metabolism-by-targeted-hplc-ms-ms-metabolic-profiling
#10
Fanyi Zhong, Mengyang Xu, Katie Schelli, Joshua Rutowski, Britt A Holmén, Jiangjiang Zhu
Alterations of gut bacterial metabolism play an important role in their host metabolism, and can result in diseases such as obesity and diabetes. While many factors were discovered influencing the gut bacterial metabolism, exposure to ultrafine particles (UFPs) from engine combustions were recently proposed to be a potential risk factor for the perturbation of gut bacterial metabolism, and consequentially to obesity and diabetes development. This study focused on evaluation of how UFPs from diesel engine combustions impact gut bacterial metabolism...
August 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28393073/a-comparative-study-of-oral-microbiota-in-infants-with-complete-cleft-lip-and-palate-or-cleft-soft-palate
#11
Agnieszka Machorowska-Pieniążek, Anna Mertas, Małgorzata Skucha-Nowak, Marta Tanasiewicz, Tadeusz Morawiec
Few reports have been published on the early microbiota in infants with various types of cleft palate. We assessed the formation of the oral microbiota in infants with complete cleft lip and palate (CLP n = 30) or cleft soft palate (CSP n = 25) in the neonatal period (T1 time) and again in the gum pad stage (T2 time). Culture swabs from the tongue, palate, and/or cleft margin at T1 and T2 were taken. We analysed the prevalence of the given bacterial species (the percentage) and the proportions in which the palate and tongue were colonised by each microorganism...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28384969/a-comparison-of-antibacterial-efficacy-of-0-5-sodium-fluoride-impregnated-miswak-and-plain-miswak-sticks-on-streprococcus-mutans-a-randomized-controlled-trial
#12
Romshi Raina, Vinod Kumar, Madhusudan Krishna, Sakshi Raina, Ashish Jaiswal, Arul Selvan, Chaitra Patil, Sneh Kalgotra
INTRODUCTION: Miswak (Salvadora persica) is a tooth cleaning stick made from the Salvodora Persica tree. It serves as a natural dentifrice with anti-bacterial, anti-plaque and anti-fungal properties. Fluoride, impregnated in chewing sticks will bestow comparable safety against dental caries as the fluoride containing dentifrice. AIM: The aim of the present study was to assess and compare the anti-bacterial effect of 0.5% sodium fluoride impregnated miswak and plain miswak sticks on Streptococcus mutans...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28374172/evaluation-of-potential-probiotics-isolated-from-human-milk-and-colostrum
#13
Quésia S Damaceno, Jaqueline P Souza, Jacques R Nicoli, Raquel L Paula, Gabriela B Assis, Henrique C Figueiredo, Vasco Azevedo, Flaviano S Martins
Several studies have demonstrated a diversity of bacterial species in human milk, even in aseptically collected samples. The present study evaluated potential probiotic bacteria isolated from human milk and associated maternal variables. Milk samples were collected from 47 healthy women and cultured on selective and universal agar media under aerobic and anaerobic conditions. Bacterial isolates were counted and identified by Biotyper Matrix-Assisted Laser Desorption Ionization-Time of Flight mass spectrometry and then tested for probiotic properties...
April 3, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28328023/identification-of-microorganisms-in-biofluids-of-individuals-with-periodontitis-and-chronic-kidney-disease-using-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#14
Levy Anderson César Alves, Rafael Celestino Souza, Taciana Mara Couto da Silva, Andreia Watanabe, Meriellen Dias, Maria Anita Mendes, Ana Lídia Ciamponi
RATIONALE: Chronic kidney disease (CKD) and periodontitis (PD) are important health issues. There is a large variety of microorganisms related to the pathogenesis of periodontitis, and optimising the time and the cost of laboratory assays to detect these organisms is highly valuable in the medical field. METHODS: Bacteria were isolated from saliva and oral biofilm of 30 adolescents and young adults with definite medical and dental diagnosis of CKD and PD, respectively, and proteins were extracted for microorganism identification by means of the matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) technique...
May 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28275789/-preparation-and-identification-of-polyclonal-antibody-of-streptococcus-salivarius-57-i-urease
#15
Yan Wang, Dan-Ying Tao, Xi-Ping Feng
PURPOSE: To prepare and identify polyclonal antibody of Streptococcus salivarius 57.I urease. METHODS: The biggest structural subunit of Streptococcus salivarius 57.I urease, UreC, was obtained by gene clone, IPTG-induced expression, and purification through affinity chromatography. Anti-sera and polyclonal antibody were raised by immunizing rabbits with purified UreC. Western blot was utilized to detect the specific combination of polyclonal antibody with UreC...
December 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28274037/antimicrobial-effects-of-garcinia-mangostana-on-cariogenic-microorganisms
#16
Sunitha Janardhanan, Jaideep Mahendra, A S Smiline Girija, Little Mahendra, Vijayashree Priyadharsini
INTRODUCTION: Garcinia mangostana commonly called as Mangosteen fruit has been used as an antibacterial agent since age old times. The mangosteen pericarp has proven to have antibacterial effect, but the effect of the same on cariogenic organisms has not been explored. The present study was an attempt to gain a better understanding of the antibacterial effect of mangosteen pericarp on the cariogenic bacteria, to unravel the therapeutic potential for the same. AIM: The aim of the study was to assess the antibacterial efficacy of the crude chloroform extract of mangosteen pericarp against cariogenic bacteria...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28270703/effectiveness-of-salvadora-persica-extracts-against-common-oral-pathogens
#17
Hanan Balto, Ibrahim Al-Sanie, Sultan Al-Beshri, Abdullah Aldrees
OBJECTIVE: The purpose of this study was to evaluate the antibacterial activity of ethanol and hexane extracts of Salvadora persica against common oral pathogens. MATERIALS AND METHODS: Well diffusion, Minimum Inhibition Concentration (MIC), Minimum Bactericidal Concentration (MBC), and Broth microdilution tests were used to determine the optimum antimicrobial concentrations of S. persica extracts against Streptococcus mutans (S. mutans), Streptococcus sanguis (S...
January 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28259058/community-analysis-of-dental-plaque-and-endotracheal-tube-biofilms-from-mechanically-ventilated-patients
#18
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...
June 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28253182/effectiveness-of-casein-phosphopeptide-amorphous-calcium-phosphate-and-lysozyme-lactoferrin-and-lactoperoxidase-in-reducing-streptococcus-mutans-counts-in-dentinal-caries
#19
Sérgio Luiz Pinheiro, Giuliana Rodrigues Azenha, Giovana Spagnolo Albamonte Araujo, Regina Maria Puppin Rontani
This study compared the capacity of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) to that of a combination of lysozyme, lactoferrin, and lactoperoxidase (LLL) in root canal disinfectant for reducing the Streptococcus mutans counts from dentinal caries. Forty human permanent third molars were selected, and flat dentin surfaces were created. Carious lesions were induced using a microbiological model. The specimens were randomly divided into 2 groups (n = 20) according to the type of agent used: group 1, CPP-ACP; group 2, LLL...
March 2017: General Dentistry
https://www.readbyqxmd.com/read/28236205/influence-of-oral-probiotic-streptococcus-salivarius-k12-on-ear-and-oral-cavity-health-in-humans-systematic-review
#20
Katarina Zupancic, Valentina Kriksic, Irena Kovacevic, Dujo Kovacevic
Traditionally, probiotics are linked to the good health of the intestine and most clinical studies focus on that field. Evidence of oral probiotic use for ear and oral cavity disease prevention with impact on human health is limited. This work reviews existing studies and literature on Streptococcus salivarius K12 as an oral probiotic and effects of S. salivarius K12 on human ear and oral cavity human health. The studies were accessed via database searches: MEDLINE, PubMed, and Elsevier. The search included/focused on/encompassed publications from 2003 to 2016 with keywords related to K12 Streptococcus salivarius, bacteriocin-like inhibitory substances (BLIS) K12, probiotic K12 salivarius, and K12 probiotic health effects...
February 24, 2017: Probiotics and Antimicrobial Proteins
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