microorganisms play a major role in the initiation and perpetuation of pulpal and periapical disease. in order to predictably achieve a bacteria-free root canal system, it is necessary to use intracanal medicaments. calcium hydroxide is the most common intracanal medicaments. it is effective against primary infections. however, its effectiveness against enterococcus faecalis and candida albican...

The study was aimed at evaluating the antibacterial and antioxidant activity of aqueous extract of Cinnamomum verum (cinnamon) bark in order to prevent the spoilage and rancidity of food. The extract was tested for antibacterial activity against three gram positive (Staphylococcus aureus, Bacillus cereus, Enterococcus faecali) and two gram negative (Escherichia coli, Proteus mirabilis) food bor...

Introduction: Increasing of food-related diseases has led to the perception of diet importance. Plant-derived products (especially tea) as important sources of antioxidant and antimicrobial compounds play a major role in reducing food pathogens. In this study, total phenolic content, antioxidant and antimicrobial activity of four tea extracts including green tea, white, black and red teas were ...

introduction: increasing of food-related diseases has led to the perception of diet importance. plant-derived products (especially tea) as important sources of antioxidant and antimicrobial compounds play a major role in reducing food pathogens. in this study, total phenolic content, antioxidant and antimicrobial activity of four tea extracts including green tea, white, black and red teas were ...

V. A. KNIVETT I954 3. [32P]Potassium dihydrogen phosphate was used to distinguish between ATP formed from ADP by the action of adenylate kinase (myokinase) and by synthesis involving inorganic phosphate. The appearance of 32P in ADP, and in both of the labile phosphates of ATP, but not in AMP, indicates the presence of adenylate kinase in extracts of Strep. faecali&. 4. The fission of citrullin...

The elongation factor Tu, encoded by tuf genes, is a GTP binding protein that plays a central role in protein synthesis. One to three tuf genes per genome are present, depending on the bacterial species. Most low-G+C-content gram-positive bacteria carry only one tuf gene. We have designed degenerate PCR primers derived from consensus sequences of the tuf gene to amplify partial tuf sequences fr...

Conventional tests and commercially available systems were used to determine the species identities of clinical isolates of enterococci. Strict adherence to the conventional test scheme of Facklam and Collins (R. R. Facklam and M. D. Collins, J. Clin. Microbiol. 27:731-734, 1989) resulted in the misidentification of lactose-negative Enterococcus faecalis isolates as Enterococcus solitarius, but...

Resistance to linezolid among Enterococcus faecium and Enterococcus faecalis isolates has been reported in patients who receive a prolonged course of the drug. We report two cases of linezolid-resistant Enterococcus faecalis that occurred in patients who previously received linezolid for infections with vancomycin-resistant Enterococcus faecium. Both isolates had the G2576U mutation in the 23S ...