BACTERIAL BIOFILMS AS A NATURAL FORM OF EXISTENCE OF BACTERIA IN THE ENVIRONMENT AND HOST ORGANISM


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Abstract

Advances in microscopic analysis and molecular genetics research methods promoted the acquisition of evidence that natural bacteria populations exist predominately as substrate attached biofilms. Bacteria in biofilms are able to exchange signals and display coordinated activity that is inherent to multicellular organisms. Formation of biofilm communities turned out to be one of the main survival strategies of bacteria in their ecological niche. Bacteria in attached condition in biofilm are protected from the environmental damaging factors and effects of antibacterial substances in the environment and host organism during infection. According to contemporary conception, biofilm is a continuous layer of bacterial cells that are attached to a surface and each other, and contained in a biopolymer matrix. Such bacterial communities may be composed of bacteria of one or several species, and composed of actively functioning cells as well as latent and uncultured forms. Particular attention has recently been paid to the role of biofilms in the environment and host organism. Microorganisms form biofilm on any biotic and abiotic surfaces which creates serious problems in medicine and various areas of economic activity. Currently, it is established that biofilms are one of the pathogenetic factors of chronic inflection process formation. The review presents data on ubiquity of bacteria existence as biofilms, contemporary methods of microbial community analysis, structural-functional features of bacterial biofilms. Particular attention is paid to the role of biofilm in chronic infection process formation, heightened resistance to antibiotics of bacteria in biofilms and possible mechanisms of resistance. Screening approaches for agents against biofilms in chronic infections are discussed.

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БАКТЕРИАЛЬНЫЕ БИОПЛЕНКИ КАК ЕСТЕСТВЕННАЯ ФОРМА СУЩЕСТВОВАНИЯ БАКТЕРИЙ В ОКРУЖАЮЩЕЙ СРЕДЕ И ОРГАНИЗМЕ ХОЗЯИНА
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About the authors

Yu. M Romanova

Gamaleya Research Institute of Epidemiology and Microbiology, Moscow, Russia

A. L Gintsburg

Gamaleya Research Institute of Epidemiology and Microbiology, Moscow, Russia

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Copyright (c) 2011 Romanova Y.M., Gintsburg A.L.

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