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Tuesday, February 11, 2014

Biofilms: The Who, What, Where, Why, and How's

Antony Van Leeuwenhoek, the first microbiologist, initially saw bacteria in dental plaque, making him the first oral microbiologist and biofilm experimenter back in the 1600s. Biofilms solve when bacteria adhere to surfaces and begin to excrete a slimy, glue-like substance that croup anchor them to all kinds of material - much(prenominal) as metals, plastics, soil particles, medical implant materials, and tissue. A biofilm can be formed by a single bacterial species, scarce more often biofilms consist of many species of bacteria, as puff up as fungi, algae, protozoa, debris and corrosion products. Essentially, biofilms may form on any surface exposed to bacteria and round follow of water. Bacteria have a few key delight canal to attach to a surface. Pili, short structural appendages attached to the kiosk wall, can help attach bacteria to a cast of surfaces. Another holdfast method is the glycocalyx, a protein-polysaccharide stopping point that was in like manner called the slime layer. The glycocalyx is a open mass of carbohydrate-based material secreted by bacteria. This material is critical to the attachment of bacteria to surfaces and has a categorization of other functions as well. one time a biofilm forms, a do of things begin to happen. Bacteria deduct chemically signaling severally other by a process known as quorum sensing. The bacteria and then send other signals to each other, which, in turn, start a process known as signaling. Signaling induces bacteria to start behaving not as planktonic free single cells, plainly rather like cellular systems acting in concert. at once anchored to a surface, biofilm microorganisms carry out a variety of reactions both(prenominal) good and bad, depending on the surrounding environmental conditions. Biofilms are amenable for diseases such as otitis media, the most common acute auricula atrii infection in children in the U.S. opposite diseases in which biofilms run across a role include b acterial endocarditis (infection... ! If you want to have a full essay, order it on our website: OrderCustomPaper.com

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