Papers by Keyword: Bacterial Adhesion

Abstract: Although titanium dioxide (TiO₂) is an implantable biomaterial with its antibacterial activity, infection on TiO₂ surfaces remains a problem for medical settings. According to our previous studies, curcumin, the main component of turmeric (Curcuma longa), partially hindered the attachment of Streptococcus mutans to human tooth surfaces. Therefore, it was examined whether several implant device-associated bacteria were able to adhere to nanosized TiO₂ surfaces. In addition, the effect of curcumin on the bacterial adhesion was investigated. Bacterial strains were cultured on pure Ti and TiO₂ surfaces with various nanotube sizes in the absence or presence of curcumin and observed by scanning electron microscopy. Consequently, most bacteria adhered to Ti and TiO₂ surfaces. However, curcumin increased the adhesion of bacteria including S. mutans. The results suggest that bacterial adhesion to implant titanium surfaces can be augmented via curcumin ingestion.

Abstract: The vulva-vaginal infections are common in women. The textile materials, used in underwear and absorbent hygiene products, are identified as risk factors, but their influence on the emergence of these infections is not yet clear. Bacterial adhesion is associated with persistence of microorganisms in the material that is related to the recurrence of infections. This paper is an initial attempt for the elucidation of these questions. Some of the main features involved in this phenomenon are identified and characterized.

Abstract: It is known that glucosamine/chitosan derivatives have the ability of inhibiting bacterial adhesion to tooth and biomaterial surfaces. The hypotheses of this article included 1) the inhibition effects of different (chemically) glucosamine products are different and 2) more water-soluble glucosamine preparation(s) may have a superior inhibition effect. The basic testing systems are in vitro static adhesion models and the amount of the adhesion is evaluated by direct counting using epifluorecense microscopy. The test material is a smooth surfaced commercially pure titanium (cp-Ti). The bacterium tested is Staphylococcus aureus. The results showed that compared to the control samples (without glucosamine or chitosan coating) the sulfated p-GlcNAc and Sigma glucosamine HCl significantly inhibited S. aureus adhesion to titanium surfaces (94% and 78% respectively)