نتایج جستجو برای: s. mutans

تعداد نتایج: 715062  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1391

در کشورهای آسیای شرقی از عصاره‏های مختلف خیارهای دریایی بعنوان یک منبع غنی غذایی و دارویی برای بیماری‏های مختلف استفاده می‏کنند. این عصاره ها اثرات ضد باکتریایی، ضد توموری و ضد قارچی دارند. در مطالعه حاضر اثر ضد باکتریایی عصاره دیواره بدن خیار دریایی گونه holothuria مورد بررسی قرار گرفته است. این عصاره‏ها شامل: عصاره آبی، بافر فسفاتی (7.8 ph:)، کلروفرمی، هگزانی و متانولی است که از این عصاره‏ها ...

Journal: :European journal of oral sciences 2011
Noel K Childers Robert C Osgood Kuei-Ling Hsu Chanika Manmontri Stephanie S Momeni Harry K Mahtani Gary R Cutter John D Ruby

This study compared SYBR Green real-time quantitative PCR (qPCR) with standard plate counting for the enumeration of Streptococcus mutans in oral samples. Oral samples (n = 710) were collected from high-caries-risk children for quantification of S. mutans by qPCR using primer pairs. The S. mutans copy number was calculated with reference to a qPCR quantification cycle (Cq) standard curve and co...

Journal: :Microbial pathogenesis 2008
Tracey A Miller-Torbert Shvetank Sharma Robert G Holt

A sequence of 1647 base pairs in length of Streptococcus mutans DNA that encodes for a 63-kDa protein with significant amino acid similarity with fibronectin-binding proteins of Streptococcus pyogenes and Streptococcus gordonii was cloned. The putative recombinant fibronectin-binding protein of S. mutans was purified using affinity chromatography and the cloned protein was used to prepare polyc...

Journal: :Applied and environmental microbiology 2005
Bing-Yan Wang Howard K Kuramitsu

Streptococcus mutans has been recognized as an important etiological agent in human dental caries. Some strains of S. mutans also produce bacteriocins. In this study, we sought to demonstrate that bacteriocin production by S. mutans strains GS5 and BM71 was mediated by quorum sensing, which is dependent on a competence-stimulating peptide (CSP) signaling system encoded by the com genes. We also...

2016
E.W. Bachtiar B.M. Bachtiar R.D. Soejoedono I.W. Wibawan A. Afdhal

OBJECTIVE This study aims to elucidate the effect of IgY anti ComD on the biological properties of Streptococcus mutans. (S. mutans) ComD is an interspecies quorum-sensing signaling receptor that plays an important role in biofilm formation by S. mutans. MATERIALS AND METHODOLOGY Egg yolk IgY was produced by the immunization of chickens with a DNA vaccine containing the ComD DNA coding region...

Background and Objective: Systemic sclerosis is an autoimmune disorder with orofacial manifestations, including tooth decay. Lactobacilli can inhibit biofilm formation and growth of cariogenic pathogens, such as Streptococcus mutans. We aimed to assess the salivary levels of S. mutans and Lactobacilli as indicators of dental caries development in patients with systemic sclerosis. Methods: In t...

Journal: :dental research journal 0
chandresh shukla raj kumar maurya vinod singh manisha tijare

background: orthodontic therapy has oral ecological changes causing increased numbers of mutans streptococci in saliva and plaque. the purpose of this study was to estimate counts and colonization pattern of streptococcus mutans after application of fixed orthodontic appliances. materials and methods: plaque samples of randomly selected sixty patients were collected before placement of orthodon...

Journal: :novelty in biomedicine 0
shila emamieh department of operative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran hossein goudarzi department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran alireza akbarzadeh baghban department of basic sciences, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran yosra khaterizadeh department of operative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran

background:dental caries is associated with oral pathogenes and streptococcus mutans (s. mutans)is one of the primary cariogenic organisms. the aim of this clinical study was to evaluate the effect of sugar free chewing gum containing casein phosphopeptide-amorphous calcium phosphate(cpp-acp) and xylitol on salivary streptococcus mutan.   m aterials and methods: 60 dental students, who voluntee...

Background and Aim: This study aimed to compare the effects of acetone and ethanolic extracts of Plantago major (P. major) on S. mutans.   Materials and Methods: In this in vitro study, the antibacterial effects of eight different concentrations of the acetone and ethanolic extracts of P. major seed were examined on S. mutans, and the minimum inhibitory concentration (MIC) and minimum bacte...

2011
Tamami Okada Kazuko Takada Kou Fujita Takuji Ikemi Robert C. Osgood Noel K. Childers Suzanne M. Michalek

BACKGROUND Streptococcus mutans and Streptococcus sobrinus are considered to be important bacterial species in the initiation of human dental caries. Therefore, the establishment of a reliable genotyping method to distinguish S. mutans from S. sobrinus is of central importance. OBJECTIVE We assessed the usefulness of repetitive extragenic palindromic polymerase chain reaction (rep-PCR) using ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید