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Nitric oxide has also been shown to trigger the dispersal of biofilms of several bacteria species [34] [35] at sub-toxic concentrations. Nitric oxide has potential as a treatment for patients that have chronic infections caused by biofilms. [36] It was generally assumed that cells dispersed from biofilms immediately go into the planktonic ...
Subgingival biofilm is plaque that is located under the gums. It occurs after the formation of the supragingival biofilm by a downward growth of the bacteria from above the gums to below. This plaque is mostly made up of anaerobic bacteria, meaning that these bacteria will only survive if there is no oxygen.
The ability of bacteria to adhere to a surface and begin the formation of a biofilm is determined in part by the enthalpy of adhesion of the surface. Adherence is thermodynamically favored if the free enthalpy of adhesion is negative and decreases with increasing free enthalpy values. [ 7 ]
Quorum sensing (QS) is used by bacteria to form biofilms. Quorum sensing is used by bacteria to form biofilms because the process determines if the minimum number of bacteria necessary for biofilm formation are present. The criteria to form a biofilm is dependent on a certain density of bacteria rather than a certain number of bacteria being ...
Oral bacteria have been shown to produce small peptides, such as competence stimulating peptides, which can help promote single-species biofilm formation. A common form of inter-species signalling is mediated by 4, 5-dihydroxy-2, 3-pentanedione (DPD), also known as autoinducer-2 (Al-2). [32]
While S. mutans grows in the biofilm, cells maintain a balance of metabolism that involves production and detoxification. Biofilm is an aggregate of microorganisms in which cells adhere to each other or a surface. Bacteria in the biofilm community can actually generate various toxic compounds that interfere with the growth of other competing ...
Causes: Staphylococcus aureus bacteria: ... within the S. aureus species is its co-evolution with its human ... The biofilm formation is the main cause of ...
The formation of biofilms is a complex process and is dependent upon the availability of light as well as the relationships between the microorganisms. Biofilms serve a variety of roles in aquatic, terrestrial, and extreme environments; these roles include functions which are both beneficial and detrimental to the environment.
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