Bacteria DLVO theory

Puck and others used the theories of colloid stability to explain the adsorption of bacteriophage by bacteria. Their findings appeared to be compatible with those of the basic colloid theory. This work and that of Valentine and Allison " led to the novel result that initial contact between virus particles and bacterial surfaces was regulated by electrostatic repulsion and the forces that govern the double layer. While these early studies were not as successful as one might have wished, they did show a correlation between the DLVO theory and the experimental data. Though the evidence is not conclusive, the work by Curtis and Pethica also tends to show that the DLVO theory is relevant to some biological systems. Other studies done at the time tended to show little or no correlation between the DLVO theory... 

The effect of the long-range intermolecular forces between the electrode and bacteria has been considered by Rutter and Vincent in terms of the DLVO theory.The total free energy of interaction comprises... 

Biocolloid deposition and release also is be regulated by DLVO type interactions e.g., Ryan et al., (1999) or through nonelectrostatic mechanisms (hydrophobic bonding in the ca.se of viruses]. Bacteria can attach to immobile surfaces ilmnigh excreted biopolymers (e.g.. Extended DLVO theory) subsequent destruc-... 

The thermodynamic model is, like the DLVO theory, only applicable for the adhesion in vitro. Both models are based upon non-specific interactions occurring between particles (cells) and solid surfaces. In vivOr or under in vivo like conditions, specific interactions also have to be taken into account. Such specific interactions have been shown to mediate adhesion between bacteria and natural substrata, such as adhesion of streptococci to dental enamel,29 y adhesion of E. coli to uroepithelial cells.30 Although not clearly demonstrated for the bacterial adhesion to synthetic polymers, it is highly possible that specific interactions, e.g. between bacterial surface proteins and protein layers adsorbed on the polymer surface, play an important role as well. 

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