Composition of Biofilm
Biofilm is a complex microbial community containing self- and surface-attached microorganisms that are embedded in an extracellular polymeric substance.1,2 The extracellular polymeric substance is a primarily polysaccharide protective matrix synthesized and secreted by the microorganisms that attaches the biofilm firmly to a living or non-living surface. This protective covering does not allow the body’s immune system to recognize the presence of the microorganism; therefore, the bacteria evade an immune response, avoid detection by standard diagnostic techniques, and avoid destruction by standard treatments. Because of the tenacity of the attached biofilm, the microoganisms are able to resist physical forces, such shear, and are able to withstand nutrient and moisture deprivation, altered pH, and the impact of antibiotics and antiseptics. For the purposes of this discussion we break down the formation and actions of biofilms and discuss their impact on wound healing … read more
