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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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).
Farlex Partner Medical Dictionary © Farlex 2012

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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

bi·o·film

(bī'ō-film)
Thin coating of microorganisms that forms on a body surface, especially the surface of a tooth.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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).
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Why is it so hard to get rid of biofilms? Because of their protective shell.
faecalis were allowed to adhere or form biofilms, as described above.
Biofilm infections are a growing health concern in their own right.
Bacteria have historically been thought to be isolated organisms; however, it is now clear that the vast majority of bacteria exist in complex communities, attached to surfaces known as biofilms (2).
Furthermore, the catheter-associated biofilm producers, preceding drug resistivity, and their thought-provoking infection control procedures have been reported in aforementioned studies, which raises our concern on CAUTIs and biofilm producers in our settings [4, 5].
Pseudomonas aeruginosa forms biofilms in acute infection independent of cell-to-cell signaling.
"Treating biofilms that occur on teeth requires a great deal of manual labour, both on the part of the consumer and the professional.
The systems were incubated for 24 hours 37[degrees]C and 120rpm and proceeded to quantification of cultivable cells in biofilms and quantification of biomass.
coli is mainly related to its virulence factors, which are associated with host colonization and invasion, tissue damage, stimulation of inflammatory response, evasion of immune response, and biofilm formation.