keyword
MENU ▼
Read by QxMD icon Read
search

Streptococcus salivarius

keyword
https://www.readbyqxmd.com/read/28930530/genetic-organization-of-streptococcus-salivarius-24smbc-blp-like-bacteriocin-locus
#1
Maria Santagati, Marina Scillato, Stefania Stefani
In this paper, we describe, for the first time, the genetic organization of the blpU-like cassette in Streptococcus salivarius24SMBc by entire genome sequencing. This strain has recently been found useful and widely applied as an oral probiotic in the prevention of recurrent otitis media. The 24SMBc blpU-like cassette  is 8,023 bp in length, organized in 11 orfs,of which orf8 encodes for the pore-forming peptide bacteriocin, belonging to class IIc, with a double-glycine leader peptide. The first characterization of blplocus was described inStreptococcus pneumoniae, showing a crucial role in interspecies competition within the nasopharynx...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28916389/removal-and-killing-of-multispecies-endodontic-biofilms-by-n-acetylcysteine
#2
Young-Suk Choi, Cheul Kim, Ji-Hoi Moon, Jin-Yong Lee
Removal of bacterial biofilm from the root canal system is essential for the management of endodontic disease. Here we evaluated the antibacterial effect of N-acetylcysteine (NAC), a potent antioxidant and mucolytic agent, against mature multispecies endodontic biofilms consisting of Actinomyces naeslundii, Lactobacillus salivarius, Streptococcus mutans and Enterococcus faecalis on sterile human dentin blocks. The biofilms were exposed to NAC (25, 50 and 100mg/mL), saturated calcium hydroxide or 2% chlorhexidine solution for 7 days, then examined by scanning electron microscopy...
September 2, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28894194/streptococcus-salivarius-ms-oral-d6-promotes-gingival-re-epithelialization-in-vitro-through-a-secreted-serine-protease
#3
Marcela M Fernandez-Gutierrez, Peter P J Roosjen, Eveline Ultee, Maarten Agelink, Jacques J M Vervoort, Bart Keijser, Jerry M Wells, Michiel Kleerebezem
Gingival re-epithelialization represents an essential phase of oral wound healing in which epithelial integrity is re-establish. We developed an automated high-throughput re-epithelialization kinetic model, using the gingival epithelial cell line Ca9-22. The model was employed to screen 39 lactic acid bacteria, predominantly including oral isolates, for their capacity to accelerate gingival re-epithelialization. This screen identified several strains of Streptococcus salivarius that stimulated re-epithelialization...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28892899/first-detection-and-characterization-of-streptococcus-dentapri-from-caries-active-subject
#4
Hamzah Abdulrahman Salman, R Senthil Kumar, N Chaitanya Babu, Khalid Imran
INTRODUCTION: Mutans streptococci (MS) are a group of oral bacteria generally regarded as the principal agents in the pathogenesis of dental caries. AIM: The study aimed was characterize S. dentapri based on phylogenetic analysis and phenotypic methods from Caries Active Subject. MATERIALS AND METHODS: While sequencing MS species which were isolated from 65 caries active subjects, one strain of S. dentapri was detected. Dental plaque samples were processed and cultured on mitis salivarius bacitracin agar...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28856907/to-add-or-not-to-add-probiotics-to-infant-formulae-an-updated-systematic-review
#5
A Skórka, M Pieścik-Lech, M Kołodziej, H Szajewska
We updated evidence on the effects of the administration of probiotic-supplemented infant formulae (IF) compared with unsupplemented IF. Five databases were searched up to September 2016 for randomised controlled trials. Twenty publications were identified, including five new RCTs. Supplementation of IF with Bifidobacterium lactis Bb12, either alone or with Streptococcus thermophilus, had no effect on growth, respiratory illness, antibiotic use, stool frequency or consistency. However, there was a significant reduction in the number of episodes of gastrointestinal infections (Bb12) and a lower frequency of colic or irritability (when both strains were used)...
August 31, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28800820/bacterial-diversity-of-the-colombian-fermented-milk-suero-coste%C3%A3-o-assessed-by-culturing-and-high-throughput-sequencing-and-dgge-analysis-of-16s-rrna-gene-amplicons
#6
Karina Edith Motato, Christian Milani, Marco Ventura, Francia Elena Valencia, Patricia Ruas-Madiedo, Susana Delgado
"Suero Costeño" (SC) is a traditional soured cream elaborated from raw milk in the Northern-Caribbean coast of Colombia. The natural microbiota that characterizes this popular Colombian fermented milk is unknown, although several culturing studies have previously been attempted. In this work, the microbiota associated with SC from three manufacturers in two regions, "Planeta Rica" (Córdoba) and "Caucasia" (Antioquia), was analysed by means of culturing methods in combination with high-throughput sequencing and DGGE analysis of 16S rRNA gene amplicons...
December 2017: Food Microbiology
https://www.readbyqxmd.com/read/28767890/chemical-composition-antioxidant-and-antibacterial-activities-of-essential-oils-from-leaves-and-flowers-of-eugenia-klotzschiana-berg-myrtaceae
#7
Nárgella S Carneiro, Cassia C F Alves, José M Alves, Mariana B Egea, Carlos H G Martins, Thayná S Silva, Lizandra C Bretanha, Maira P Balleste, Gustavo A Micke, Eduardo V Silveira, Mayker L D Miranda
Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC-MS. The major compounds were α-copaene (10.6 %) found in oil from leaves in natura, β-bisabolene (17...
July 31, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28764202/antimicrobial-effect-of-leaves-of-phyllanthus-niruri-and-solanum-nigrum-on-caries-causing-bacteria-an-in-vitro-study
#8
J Sunitha, Swathy Krishna, R Ananthalakshmi, J Sathiya Jeeva, As Smiline Girija, Nadeem Jeddy
INTRODUCTION: Solanum nigrum and Phyllanthus niruri are common herbs which are indigeneous to India. Solanum nigrum commonly called 'manathakkali Keerai' in Tamil, forms an indispensable part of South Indian diet. Phyllanthus niruri (keezhanelli in Tamil) is a widely used medicinal plant, the leaves of which have been used extensively in Ayurveda and native medicine to cure various liver ailments. The herbs Solanumnigrum and Phyllanthus niruri have been found to be effective against numerous enteropathogens in various in vitro studies...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28747897/identification-of-emerging-human-mastitis-pathogens-by-maldi-tof-and-assessment-of-their-antibiotic-resistance-patterns
#9
María Marín, Rebeca Arroyo, Irene Espinosa-Martos, Leónides Fernández, Juan M Rodríguez
Lactational mastitis constitutes one of the main causes of undesired weaning, depriving the mother-infant pair from the benefits of breastfeeding; therefore, this condition should be considered a relevant public health issue. The role of specific microorganisms remains unclear since human milk cultures and antibiotic susceptibility testing (AST) are not routinely performed, despite the fact that this would be key to ensure an early and effective diagnosis and treatment. The objective of this study was to describe the culturable microbial diversity in 647 milk samples from breastfeeding women with clinical symptoms of mastitis by Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF) VITEK MS technology and to analyze the antimicrobial susceptibility profiles of a collection of isolates from these samples by the VITEK 2 AST system...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28740363/synthesis-and-antimicrobial-activity-of-chiral-quaternary-n-spiro-ammonium-bromides-with-3-4-dihydro-1-h-spiro-isoindoline-2-2-isoquinoline-skeleton
#10
Krzysztof Bielawski, Katarzyna Leszczyńska, Zbigniew Kałuża, Anna Bielawska, Olga Michalak, Tamara Daniluk, Olga Staszewska-Krajewska, Anna Czajkowska, Natalia Pawłowska, Agnieszka Gornowicz
A new class of highly functionalized tetrahydroisoquinolines with a quaternary carbon stereocenter was synthesized starting from an easily accessible L-tartaric acid. Nine strains of bacteria (Staphylococcus aureus, Streptococcus pyogenes, Streptococcus mutans, Streptococcus salivarius, Bacillus subtilis, Enterococcus faecalis, Moraxella catarrhalis, Escherichia coli, Campylobacter jejuni) were used for the determination of minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) of synthesized compounds...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28729683/a-positive-feedback-loop-mediated-by-sigma-x-enhances-expression-of-the-streptococcal-regulator-comr
#11
Rabia Khan, Roger Junges, Heidi A Åmdal, Tsute Chen, Donald A Morrison, Fernanda C Petersen
Natural transformation is used by bacteria to take up DNA from their surroundings and incorporate it into their genomes. Streptococci do so during a transient period of competence, triggered by pheromones that they produce, secrete and sense under conditions influenced by the environment. In Streptococcus mutans, Streptococcus suis, and species of the bovis, salivarius and pyogenic groups of streptococci, the pheromone XIP is sensed by the intra-cellular regulator ComR, that in turn activates the transcription of comS, encoding the XIP precursor, and of sigX, encoding the only known alternative sigma factor in streptococci...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28695648/three-glycosylated-serine-rich-repeat-proteins-play-a-pivotal-role-in-adhesion-and-colonization-of-the-pioneer-commensal-bacterium-streptococcus-salivarius
#12
Benoit Couvigny, Nicolas Lapaque, Lionel Rigottier-Gois, Alain Guillot, Sophie Chat, Thierry Meylheuc, Saulius Kulakauskas, Manfred Rohde, Michel-Yves Mistou, Pierre Renault, Joel Doré, Romain Briandet, Pascale Serror, Eric Guédon
Bacterial adhesion is a critical step for colonization of the host. The pioneer colonizer and commensal bacterium of the human gastrointestinal tract, Streptococcus salivarius, has strong adhesive properties but the molecular determinants of this adhesion remain uncharacterized. Serine-rich repeat (SRR) glycoproteins are a family of adhesins that fulfil an important role in adhesion. In general, Gram-positive bacterial genomes have a unique SRR glycoprotein-encoding gene. We demonstrate that S. salivarius expresses three large and glycosylated surface-exposed proteins - SrpA, SrpB and SrpC - that show characteristics of SRR glycoproteins and are secreted through the accessory SecA2/Y2 system...
July 11, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28691028/production-of-a-functional-frozen-yogurt-fortified-with-bifidobacterium-spp
#13
Amro Abdelazez, Zafarullah Muhammad, Qiu-Xue Zhang, Zong-Tao Zhu, Heba Abdelmotaal, Rokayya Sami, Xiang-Chen Meng
Frozen dairy products have characteristics of both yogurt and ice cream and could be the persuasive carriers of probiotics. Functions of the frozen yogurt containing viable bifidobacterial cells are recognized and favored by the people of all ages. We developed a kind of yogurt supplemented by Bifidobacterium species. Firstly, five strains of Bifidobacterium spp. (Bifidobacterium bifidum ATCC 11547, Bifidobacterium longum ATCC 11549, Bifidobacterium infantis ATCC 11551, Bifidobacterium adolescentis ATCC 11550, and Bifidobacterium breve ATCC 11548) were evaluated based on the feasibility criteria of probiotics, comprising acid production, bile tolerance, and adhesion to epithelial cells...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28684920/bacteriotherapy-with-streptococcus-salivarius-24smb-and-streptococcus-oralis-89a-nasal-spray-for-preventing-recurrent-acute-otitis-media-in-children-a-real-life-clinical-experience
#14
Ignazio La Mantia, Attilio Varricchio, Giorgio Ciprandi
Recurrence of acute otitis media (RAOM) is a relevant issue in the clinical practice. "Bacteriotherapy" has been proposed as an option in children with RAOM. Streptococcus salivarius 24SMB nasal spray has been previously demonstrated to reduce the risk of acute otitis media (AOM) in otitis-prone children. The current retrospective and observational study aimed to confirm this outcome in a real-life setting, such as the common pediatric practice. Group A (108 children) served as control; group B (159 children) was treated with S...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/28681177/efficacy-and-safety-of-probiotic-supplemented-triple-therapy-for-eradication-of-helicobacter-pylori-in-children-a-systematic-review-and-network-meta-analysis
#15
REVIEW
Jue-Rong Feng, Fan Wang, Xiao Qiu, Lynne V McFarland, Peng-Fei Chen, Rui Zhou, Jing Liu, Qiu Zhao, Jin Li
AIM: The aim of this study was to identify the best probiotic supplementation in triple therapy for pediatric population with Helicobacter pylori infection. METHODS: Eligible trials were identified by comprehensive searches. Relative risks with 95% confidence intervals and relative ranks with P scores were assessed. RESULTS: Twenty-nine trials (3122 participants) involving 17 probiotic regimens were identified. Compared with placebo, probiotic-supplemented triple therapy significantly increased H...
July 5, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28675006/-construction-of-a-low-ph-sensing-system-in-streptococcus-mutans
#16
Kang Di, Li Yuqing, Zhou Xuedong
OBJECTIVE: To construct a low-pH-sensing system in Streptococcus mutans (S. mutans) and to visually detect the pH in situ. METHODS: Promoter of ureaseⅠ(PureⅠ) and green fluorescence protein (gfp) DNA fragments were amplified by polymerase chain reaction (PCR) from the genome of Streptococcus salivarius 57.I and S. mutans containing the gfp fragment. The two amplified DNA fragments were ligated together and further integrated into pDL278 to construct the recombinant plasmid pDL278-pureⅠ-gfp...
June 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28658918/efficacy-of-neem-extract-and-three-antimicrobial-agents-incorporated-into-tissue-conditioner-in-inhibiting-the-growth-of-c-albicans-and-s-mutans
#17
Dikshita Ray Barua, Jayaprakash Mugur Basavanna, Rana Kalappattil Varghese
INTRODUCTION: Denture stomatitis is an inflammatory condition which compromises the mucosal surface beneath dentures. The aetiology of denture stomatitis is usually multifactorial which varies from trauma from ill fitting denture to poor immune system. There are evidences that denture stomatitis is an outcome of multispecies biofilms that include Candida albicans and Streptococcus mutans. Tissue conditioners are found to be more susceptible to colonisation by micro-organisms. AIM: The purpose of this study was to compare the efficacy of neem leaf extract and three other antimicrobial agents incorporated in a tissue conditioner against both Candida albicans and Streptococcus mutans...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658911/effect-of-green-coffee-bean-extract-on-streptococcus-mutans-count-a-randomised-control-trial
#18
Mona Yadav, Mamta Kaushik, Roshni Roshni, Pallavi Reddy, Neha Mehra, Vallari Jain, Ritu Rana
INTRODUCTION: Mouth rinses have been popularly used as a supplementary oral hygiene aid. A lot of commercially available mouth rinses possess few adverse effects, which has necessitated the search for alternative and herbal mouth rinses. AIM: The aim of the study was to assess the effect of rinsing with green coffee bean extract in comparison with chlorhexidine mouthwash and sterile water on salivary Streptococcus mutans count. MATERIALS AND METHODS: A randomized parallel controlled clinical trial was planned and 45 subjects aged between 18-22 years were selected...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28650782/effect-of-probiotic-yogurt-and-xylitol-containing-chewing-gums-on-salivary-s-mutans-count
#19
RANDOMIZED CONTROLLED TRIAL
Elnaz Ghasemi, Romina Mazaheri, Arezoo Tahmourespour
BACKGROUND AND AIMS: In addition to improving gastrointestinal health and intestinal microflora, probiotic bacteria have been recently suggested to decrease cariogenic agents in the oral cavity. The aim of this study was to investigate the effects of probiotic yogurt and xylitol-containing chewing gums on reducing salivary Streptococcus mutans levels. STUDY DESIGN: This randomized clinical trial recruited 50 female students with over 10(5) colony forming units S...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28619805/complete-genome-sequences-of-two-human-oral-microbiome-commensals-streptococcus-salivarius-atcc-25975-and-s-salivarius-atcc-27945
#20
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
keyword
keyword
10715
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"