background and objectives: dental caries, caused by oral microbial flora, is considered as one of the most common infectious diseases in human. the aim of this study was to determine the effect of short-term consumption of probiotic yogurt containing bifidobacterium lactis on salivary streptococcus mutans and lactobacilli in students with initial stages of dental caries. materials and methods: ...

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: Despite the availability of a wide range of antibiotics, bacterial infections are among important challenges for the healthcare system. Therefore, the introduction of new antimicrobial preparations such as platelet-rich plasma (PRP) could be suggested theoretically as a preventive measure for bacterial infections. We aimed to evaluate the in vitro antibacterial activity of PRP again...

- to compare colonization of group b streptococcus (gbs) in diabetic and non-diabetic pregnant women. in this prospective study 50 pregnant women with diabetes mellitus (both pregestational and gestational) and 43 pregnant women without diabetes between 33 and 37 weeks' gestation were evaluated. three samples for group b streptococcal culture detection were obtained from each subject in the fol...

background: group b streptococcus (gbs) colonizes the gastrointestinal and genitourinary tract of 10-40% of pregnant women and it is a major cause of neonatal morbidity and mortality. objective: this study was to evaluate whether vaginal gbs culture results alter after digital vaginal examination or not. antibiotic resistance pattern of this specie has been also assessed. materials and methods:...

background: in this study, erythromycin resistance isolates from the students with aged 12-15 yr old were studied and the mutations in the 23s rrna were identified by sequencing. methods: throat samples of 327 students with 12-15 years old from 3 schools of tehran were cultured on the selective strep­tococ­cus pyogenes medium and 23 strains were primarily selected as s. pyogenes . results: all ...

conclusions in spite of what the parents believe, iron supplements not only do not cause dental carries but also they have preventive and inhibitory effects on them. furthermore, it is highly recommended that supplements containing both iron and zinc elements should be preferred over supplements containing only iron elements. materials and methods the antimicrobial effects of six different type...

background and aims: one of the most common chronic diseases in the world is tooth decay. a variety of bacteria are involved in this disorder of which streptococcus mutants is the most common. essential oils are considered as new natural compounds for use in combating drug-resistant bacteria. this study was aimed to evaluate the antibacterial activity of some essential oils prepared from eucaly...

background: streptococcus pneumoniae (s. pneumoniae) is a gram-positive pathogen bacteria which causes a variety of diseases, including otitis media, bacteremia, and meningitis. cases report : a 19-year-old man with paroxysm was admitted to emergency department of hospital. he was diagnosed with s. pneumoniae meningitis on the basis of an analysis of the cerebrospinal fluid and blood culture. c...