Four blood culture isolates of Streptococcus mitis were found to be resistant to penicillin (MIC, 16 to 32 micrograms/ml) and gentamicin (MIC, 128 or 1,000 micrograms/ml), and the two antibiotics demonstrated a lack of in vitro synergy. As shown by polymerase chain reaction assays, the structural gene known to encode high-level gentamicin resistance in Enterococcus faecalis, Enterococcus faeciu...

The following organisms have shown in vitro sensitivity to DBLTM Cefotaxime Sodium for Injection. Gram-positive: Staphylococci spp, including coagulase-positive, coagulase-negative and penicillinase-producing strains. Streptococci spp, including β-haemolytic and other streptococci such as Streptococcus mitis (viridans), Streptococcus pneumoniae. (Many strains of enterococci, e.g. Streptoco...

Evidence has been obtained which indicates that the possession of glycogen by Streptococcus mitis favors its survival during starvation.

Eight optochin-susceptible (Opt(s)) alpha-hemolytic (viridans) streptococcus isolates were characterized at the molecular level. These isolates showed phenotypic characteristics typical of both viridans streptococci and Streptococcus pneumoniae. Comparison of the sequence of housekeeping genes from these isolates with those of S. pneumoniae, Streptococcus mitis, Streptococcus oralis, and Strept...

1. We have produced arthritis in 50 per cent. of the rabbits injected with Streptococcus mitis. 2. The character of the arthritis is identical with that produced by Micrococcus rheumaticus. 3. The exudate in and about the joints partakes of the same nature as that caused by Streptococcus rheumaticus. 4. Bacteriological studies show that Streptococcus mitis can be recovered from about one third ...

The genetically diverse viridans group streptococci (VGS) are increasingly recognized as the cause of a variety of human diseases. We used a recently developed multilocus sequence analysis scheme to define the species of 118 unique VGS strains causing bacteremia in patients with cancer; Streptococcus mitis (68 patients) and S. oralis (22 patients) were the most frequently identified strains. Co...

Penicillin susceptibility determinations made for 14 strains of Streptococcus mitior by two different broth dilution tests revealed small numbers of tolerant strains regardless of the volumes (0.01 and 0.1 ml) of subcultured broth. The addition of penicillinase to the subculture medium increased the number of tolerant strains significantly in 0.1 ml of subcultured broth, demonstrating that the ...

background/purpose: although habitual consumption of xylitol reduces cariogenic streptococci levels, its effect on beneficial oral streptococci is less clear. the main aim of the study is to investigate the effect of short-term xylitol consumption on the oral beneficial streptococci level of saliva, streptococcus sanguinis and s. mitis . material and methods: twenty four volunteers with a media...

Objective(s): The present study aimed to investigate the antibacterial properties of a conventional epoxy-based dental sealer modified with synthesized bioactive glass (BG), hydroxyapatite (HA), and fluorine-substituted hydroxyapatite (FHA) nano-fillers. Materials and Methods: The synthesized nano-fillers were incorporated into the conventional epoxy-based dental seaer at the concentratio...