BACKGROUND We encountered three patients with severe necrotising soft tissue infections due to beta-haemolytic group G streptococcus. Due to strong clinical similarities with invasive infections produced by group A streptococcus, we investigated a potential link of shared beta-haemolytic phenotype to disease pathogenesis. METHODS Hybridisation, DNA sequencing, targeted mutagenesis, and comple...

background and objectives: dental caries is still remained as a major health problem. this problem has created a new interest to search for new antimicrobial agents from various sources including medicinal plants. since limited data is available so far regarding the antibacterial effect of coriandrum sativum seed and dentol drop against streptococcus mutans, this study aims to assess this activ...

Results. In order to study the hemolytic activity of Streptococcus, α -, β - and γ -isolated from samples clinical material synanthropic birds rodents, we studied 324 cultures Streptococcus. rats, mice caught in livestock buildings -types hemolysis were mainly manifested, -hemolysis was observed less frequently. To properties 140 Streptococcus isolated air, washings walls floors, as well feeder...

group b streptococci (gbs) or streptococcus agalactiae are members of the normal flora of the female genital tract. gbs normally colonizes the vagina in many women asymptomatically. during labor this organism may infect the newborn, leading to neonatal sepsis and meningitis. this study aimed to investigate the prevalence of group b streptococcus in pregnant women by a rapid and easy culture met...

Background: Identifying the best species of medicinal plants and extracting effective substances can be effective in preventing oral and dental illness. The Malva sylvestris L. is among these plants. Malva sylvestris L. belongs to Malvaceae family from which A great deal of (Malvone A: 2-methyl-3-methoxy-5,6-di- hydroxy-1,4-naphthoquinone) anthocyanin and important natural pigments have been ex...

objectives: dental caries and periodontal diseases are caused by infection of teeth and supporting tissues due to complex aggregate of bacteria known as biofilm, firstly colonized by streptococci. the main purpose of this in vitro study was to evaluate the antimicrobial effects of toluidine blue o (tbo) and radachlorin® in combination with a diode laser on the viability of streptococcus mutans....

background and aims: the aim of this study was to determine the virulence and antibiotic resistance properties of streptococcus agalactiae (s. agalactiae) and streptococcus uberis (s. uberis) isolated from the ruminant’s sub-clinical mastitic milk in iran. materials and methods: positive samples in the cmt test were cultured and s. agalactiae and s. uberis have been identified using biochemical...

A biochemical scheme was developed by which strains of Streptococcus constellatus, Streptococcus intermedius, and Streptococcus anginosus can reliably be distinguished from within the "Streptococcus milleri group." Strains identified as S. intermedius were differentiated by the ability to produce detectable levels of alpha-glucosidase, beta-galactosidase, beta-D-fucosidase, beta-N-acetylgalacto...

conclusion determination of colonized bacteria in oropharynx of healthy children and relationship between them can be helpful to find the ways to interfere with their colonization and prevention of diseases due to them. materials and methods the colonized bacteria in oropharynx of 296 children between 2-6 years old from 7 day care centers of tehran were isolated and determined by specific diagn...