biofilm

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biofilm

 [bi´o-film″]
a thin layer of microorganisms adhering to the surface of a structure, which may be organic or inorganic, together with the polymers that they secrete.

biofilm

(bī'ō-film),
A thin coating containing biologically active agents, which coats the surface of structures such as teeth or the inner surfaces of catheter, tube, or other implanted or indwelling device. It contains viable and nonviable microorganisms that adhere to the surface and are trapped within a matrix of organic matter (for example, proteins, glycoproteins, and carbohydrates).

biofilm

(bī′ō-fĭlm′)
n.
A complex structure adhering to surfaces that are regularly in contact with water, consisting of colonies of bacteria that secrete a mucilaginous protective coating in which they are encased. Biofilms, which are resistant to antibiotics and disinfectants, corrode pipes and cause diseases such as lung infections, but they can be used beneficially to treat sewage, industrial waste, and contaminated soil.

biofilm

[bi′o-film′]
1 a well-organized colony of bacteria clustered together to form microcolonies. These colonies of bacteria attach to surfaces where they assume different characteristics from free-floating bacteria.
2 bacterial plaque that adheres tenaciously to tooth surfaces, restorations, and prosthetic appliances. See bacterial plaque.

biofilm

Microbiology
A slimy matrix of extracellular polymeric substances produced by bacteria which protects them when aggregated, as in dental plaque, the ear, intestine, skin, etc.

Molecular biology
A technique for immobilising cells by growing microorganisms on a thin layer of organic or inorganic materials including secreted polysaccharides and glycoproteins.

bi·o·film

(bī'ō-film)
Thin coating of microorganisms that forms on a body surface, especially the surface of a tooth.

biofilm

A slime-enclosed community of bacterial colonies that is very difficult to eradicate even with the most powerful antibiotics or sterilizing systems. Biofilms can occur on any body surface, on teeth (as dental plaque), medical equipment, medical tubing, contact lenses and elsewhere. They are held together by a matrix produced by the bacteria themselves and within this the bacteria communicate by chemical messengers, and generate proteins including enzymes that inactiovate some antibiotics. Biofilms also have major industrial and economic implications and are being intensively studied.

biofilm

a collection of microbial CELLS covered by and embedded in a matrix of EXTRACELLULAR microbial POLYMERS, such as mucilage or slime, at an interface. Biofilms are found, for example, on the surface of stones in rivers and ponds, in water pipelines, as DENTAL PLAQUE on TEETH and on surgical implants. Microorganisms within biofilms appear to be less susceptible to BIOCIDES than their planktonic counterparts. The extracellular polymer and/or nutrient limitation associated with position of organisms in the film may alter sensitivity. Biofilms allow for the rapid spread of genetic material between the component microorganisms. Biofilm formation can have serious implications in industrial, environmental, medical and public health situations.

bi·o·film

(bī'ō-film)
A thin coating containing biologically active agents, which coats the surface of structures such as teeth or the inner surfaces of catheter, tube, or other implanted or indwelling device. It contains viable and nonviable microorganisms that adhere to the surface and are trapped within a matrix of organic matter (e.g., proteins, glycoproteins, and carbohydrates).

biofilm,

n a very thin layer of microscopic organisms that covers the surface of an object.
biofilm, bacterial plaque,
n a thick grouping of microorganisms that are very resistant to antibiotics and antimicrobial agents and that live on gingival tissues, teeth, and restorations, causing caries and periodontal disease; also known as
bacterial plaque biofilm.
biofilm, dental,
n See biofilm, bacterial plaque.
biofilm, plaque,
n See plaque.
biofilm, waterline,
n a microbial growth that adheres to the waterlines used in dental procedures. Poses a serious risk for immunocompromised individuals.
References in periodicals archive ?
He defined biofilm as a heterogeneous community of attached microorganisms encased in a self-produced matrix and reviewed what is currently known about Candida biofilms.
Biofilms are intricate networks of microorganisms, mainly bacteria, that form surface-attached communities.
To conclude, biofilms are efficient and highly effective strategies for bacterial survival.
monocytogenes, the etiological agent for listeriosis, is able to form biofilms on various surfaces, ranging from raw food materials to processing equipment.
Initially, reactors were operated in batch mode for 24 h to establish the biofilms on the various substrata in 1% PTYG medium.
The formulation uses multiple chemical and physical actions to penetrate a biofilm, kill the microorganisms, and remove the biofilm from surfaces.
And if all these infections are really biofilms, then the next therapeutic step is to move from antibiotic monotherapies to include the use of antibiofilm agents and aggressive treatments, Dr.
In areas related to oral health care, bacterial biofilms are found in dental unit water lines, on tooth surfaces and dental prosthetic appliances, and on oral mucous membranes.
Annous and his colleagues recently gained new insight into biofilm formation by Salmonella on various surfaces.
Results: The SCa and RCa biofilms were strongly inhibited by 8PP at 100 [micro]M (SMIC 80).
Colleagues at IFR and Campden BRI, Gloucestershire, UK, have investigated the effect of DNA-degrading enzymes on Campylobacter biofilms.