A preliminary study was made on the antibacterial mechanism of copper-bearing antibacterial stainless steels against E.coli through experiments of microbiology such as EDTA (ethylenediaminetetraacetic acid) complexing, DNA smearing and AFM (atomic force microscope) observation. It was measured that the antibacterial stainless steels showed excellent antibacterial functions with antibacterial ra...

A novel antibacterial glass-ionomer cement has been developed. Compressive strength (CS) and S. mutans viability were used to evaluate the mechanical strength and antibacterial activity of the formed cement. Compressive yield strength (YS), modulus (M), diametral tensile strength (DTS) and flexural strength (FS) were also determined. All the formulated antibacterial cements showed a significant...

Zamecnik et al. (19-21) demonstrated that sur viving DAB1 hepatoma slices incorporate more radioactivity from amino acids, carbohydrates, and related intermediates into slice proteins than do normal rat liver slices. This observation sug gested the desirability of testing the in vitro activi ty of liver preparations during AAF1 administra tion, thereby providing comparable information on this c...

In order to develop an self-cured acrylic resin having an antibacterial property, three types of commercially available inorganic antibacterial agents were added, at 1% each, to UNIFAST III to evaluate the antibacterial property. The antibacterial test evaluated the amount of Streptococcus mutans attached to UNIFAST III, the residual viable count of Streptococcus mutans cultured on UNIFAST III....

Some antibacterial agents have been shown to neutralize the biological properties of bacterial lipopolysaccharide (LPS). The aim of this study was to elucidate the role of gentamicin, tobramycin, imipenem, tigecycline, and isoniazid in affecting the production of nitric oxide (NO) induced by LPS in mice. Groups of mice were injected intraperitoneally with LPS alone, antibacterial agent alone, o...

BACKGROUND Antibacterial drug use is a major risk factor for bacterial resistance, but little is known about antibacterial use in US hospitals. The objectives of this study were to characterize trends in antibacterial use in a sample of US hospitals and to identify predictors of use. METHODS We measured systemic antibacterial use from validated claims data at 22 university teaching hospitals ...

Leaf morphology is critical for the survival of plant species. After a leaf primordium is initiated at the flank of shoot apical meristem (SAM), the development along the medial‐ lateral direction enlarges the leaf‐blades, leading to the increase of photosynthetic activi‐ ties. Thus, the revelation of mechanisms that control development across a leaf is quite important for plant breeding. A var...

Biochemical markers of bone metabolism Historical and current position The cellular activities of the two main bonespecific cell types, osteoblasts and osteoclasts, are tightly coupled and balanced. This balance maintains an adequate amount of bone matrix, which facilitates both the metabolic and physical requirements of bone. While osteoblasts synthesize the organic type 1 collagenous matrix, ...

Gel electrophoresis has been used in studying protein components in crude cell fractions for metabolic studies (1, 2) and in determining the pur i ty of isolated proteins (3). While determining the feasibility of this method to locate the murine toxin in crude cell fractions of PasteureUa pestis, we observed that toxin activi ty was associated with more than one protein component of the patiall...