نتایج جستجو برای: streptococcus mitis

تعداد نتایج: 41567  

2014
Barani Kumarasamy Sunayana Manipal Prabu Duraisamy Adil Ahmed SP Mohanaganesh C Jeevika

OBJECTIVES Use of alternative medicine to control oral streptococci is a new topic worthy of further investigation. This study aimed to elucidate the dose-dependent anti-bacterial activity of crude aqueous extract of ripe Morinda citrifolia L. (Family: Rubiaceae) fruits against oral streptococci i.e. Streptococcus mutans and Streptococcus mitis, that cause dental caries in humans. METHODS Fre...

Journal: :Journal of clinical microbiology 2010
Calum Johnston Jason Hinds Andrew Smith Mark van der Linden Johan Van Eldere Tim J Mitchell

Seven streptococcal isolates from the mitis group were analyzed for the presence of pneumococcal gene homologues by comparative genomic hybridization studies with microarrays based on open reading frames from the genomes of Streptococcus pneumoniae TIGR4 and R6. The diversity of pneumolysin (ply) and neuraminidase A (nanA) gene sequences was explored in more detail in a collection of 14 S. pseu...

2013
Mara Di Giulio Soraya Di Bartolomeo Emanuela Di Campli Silvia Sancilio Eleonora Marsich Andrea Travan Amelia Cataldi Luigina Cellini

In this work, we studied the antimicrobial properties of a nanocomposite system based on a lactose-substituted chitosan and silver nanoparticles: Chitlac-nAg. Twofold serial dilutions of the colloidal Chitlac-nAg solution were both tested on Streptococcus mitis, Streptococcus mutans, and Streptococcus oralis planktonic phase and biofilm growth mode as well as on saliva samples. The minimum inhi...

2012
Derek WS Harty

Institute of Dental Research Westmead Millennium Institutes Westmead Centre for Oral Health PO Box 533 Wentworthville NSW 2145 Tel (02) 98458772 Fax (02) 98457599 E-mail: [email protected] Infective endocarditis (IE) is a life threatening, endovascular infection occurring when bacteria enter the blood stream and adhere to heart valves. Mortality rates remain in the range of 1127% ....

Journal: :Journal of bacteriology 1943
J M Sherman C F Niven K L Smiley

The non-hemolytic streptococci of the human throat form, simultaneously, one of the oldest and least known groups of the genus. These familiar but illdefined organisms are usually referred to as the "salivarius group," as "Streptococcus viridars" and "indifferent streptococci" according to the degree of greening produced in blood agar, or simply as the "mouth streptococcus." In their early clas...

2012
K. S. Jyothi M. Seshagiri

OBJECTIVE Dental caries, periodontitis and other mucosal diseases are caused by a complex community of microorganisms. This study aimed to investigate the antimicrobial properties of saponins of four important oil yielding medicinal plant extracts on selected oral pathogens that are involved in such diseases. MATERIALS AND METHODS Saponins were extracted from Bauhinia purpurea, Madhuca longif...

Journal: :Journal of clinical microbiology 2005
Mitsuko Seki Yoshihisa Yamashita Hirotaka Torigoe Hiromasa Tsuda Setsuko Sato Masao Maeno

It is difficult to separate Streptococcus pneumoniae from the genotypically similar species Streptococcus mitis and Streptococcus oralis, which are commensals of the human oral cavity. A novel nucleic acid amplification technique, loop-mediated isothermal amplification (LAMP), which amplifies DNA under isothermal conditions (63 degrees C) with high specificity, efficiency, and rapidity, was exa...

Journal: :Circulation 1955
R A RABENS A G KARLSON J E GERACI J E EDWARDS

It is important in order to advance the increasingly successful attack on subacute bacterial endocarditis to be able to produce the disease experimentally and to treat it with new and improved therapeutic regimens. Since endocarditis caused by Streptococcus mitis has not been consistently produced previously in the dog, a study was undertaken in which cardiovascular stress was created by the es...

2015
Emily Xie Abhiroop Kotha Tracy Biaco Nikita Sedani Jonathan Zou Phillip Stashenko Margaret J. Duncan Antonio Campos-Neto Mark J. Cayabyab John S Tregoning

The pioneer human oral commensal bacterium Streptococcus mitis has unique biologic features that make it an attractive mucosal vaccine or therapeutic delivery vector. S. mitis is safe as a natural persistent colonizer of the mouth, throat and nasopharynx and the oral commensal bacterium is capable of inducing mucosal antibody responses. A recombinant S. mitis (rS. mitis) that stably expresses H...

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