Infectious process and resistance biofilm role

El papel del biofilm en el proceso infeccioso y la resistencia

Biofilm is a cell population which grows up together in a wrapped surface in a exopolysaccharide matrix which protects them of antibiotic attacks. More than 60% of all microbial infection is caused by Biofilm, to raise the resistance of these antimicrobial communities there are several mechanisms among others; antibiotic inactivity by extracellular polymerous or enzymatic alteration, grow rate diminished due to nutrient limitation, phenotypic changes in bacterial cells as a result of acquisition of resistance gene into biofilm and the persistence of a small cell group in bacterial community. The prognostic to treat and quit out biofilms is not encouraging in the immediate future. Is necessary and urgent to develop new medicines to counteract infectious on which biofilm is involved. Biofilm infection is evident with symptoms that clinically revert to antibiotic treatment. American Health Institute issued: “more than 60% of all microbian infectious are caused by biofilms”, also a 60% is attributed to them in nosocomial infections, increasing in this way hospitable stay, attention fees and mortality; due to its large resistance to antimicrobial a thousand times more than cells which live in planktonic way. The objective of the current revision is to illustrate about biofilm formation and its role in the infectious process.

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1. March PD. Microbiologic aspects of dental plaque and dental caries. Dent.Clin.N. Am 1999; 43:599-614.
2. Costerton JW, Cheng G, Gersey TI, Ladd JG, Nickel M. Bacterial biofilms in nature and disease. Annu.Rev.MIcrobiol 1987; 41:435-64.
3. Ophir T, Gutnick DL. A papele for exopolysaccharide in the protection of microorganisms from desiccation. Appl.
4. Environ. Microbiol 1994; 60:740-5.
5. O'Toole GA, Kolter R. The initiation of biofilm formation in Pseudomonas fluorescens WCS365 proceeds via multiple,
6. convergent signaling pathways: a genetic analysis. Mol. Microbiol 1998;28:449-61.
7. Poulsen LK, Ballard G, Stahl DA. Use of rRNA fluorescence in situ hybridization for measuring the activity of single cells in young and established biofilms. Appl. Environ. Microbiol 1993; 59:1354-60.
8. Stanley PM. Factors affecting the irreversible attachment of Pseudomonas aeruginosa to stainless steel. Can. J. Microbiol 1983; 29:1493-9.
9. Stickler, DJ, King JB, Winters C, Morris SL. Blockage of urethral catheters by bacterial biofilms. J. Infect 1993; 27:133-5.
10. Costerton JW, Zlewandoski ED, Caldwell DR, Lappin- Scott HM. Microbial biofilms. Annu.Rev. Microbiol 1995; 49: 711-45.
11. Caldwell DE. Cultivación and study of biofilm communites. In H.M. Microbial biofilms. Editors Lappin Scott and J.W.
12. Costerton. Cambridge: University Press, U.K; 1995. p. 64-79.
13. Henrischsen J. Bacterial surface traslocation: a survey and a classificaction. Microbiol. Rev 1972; 36:478-503.
14. Pratt LA, Kolter R. Genetic analysis of Escherichia coli biofilm formation: papeles of flagella, motility, chemotaxis and type I pili. Mol. Microbiol 1998; 30:285-93.
15. Watnick PI, Kolter R. Steps in the development of a Vibrio cholerae biofilm. Mol. Microbiol 1999; 34:586-95.
16. Davies DG, Chakrabarty AM, Geesey GG. Exopolysaccharide production in biofilms: substratum activation of alginate gene expression by Pseudomonas aeruginosa. Appl. Environ. Microbiol 1993; 59:1181-6.
17. Gacesa P. Bacterial alginate biosynthesisrecent progress and future prospects. Microbiology 1998; 144:1133-43.
18. Garrett, ES, Perlegas D, Wozniak DJ. Negative contpapel of flagellum synthesis in Pseudomonas aeruginosa is modulated by the alternative sigma factor AlgT (AlgU). J. Bacteriol 1999; 181:7401-4.
19. Pruzzo C, Crippa A, Bertone SL, Carli A. Attachment of Vibrio alginolyticus to chitin mediated by chitin-binding proteins. Microbiology 1996; 142:2181-6.
20. Overmann J, Pfennig N. Buoyancy regulation and aggregate formation in Amoebobacter purpureus from Mahoney Lake. Pems Microbiol Ecol 1992; 101:67-79.
21. Bazylinsky DA. Structure and function of de bacterial masgnetosome. ASM News 1995;61:337-43.
22. Caldwell DE, Atuku DC, Wilkie KP, Wivcharuk SK, Arthiken D, Kobert DF, et al. Germ theory vs. community theory in understating and cotpapelling the ppapeliferation of biofilms. Adv.Dent.Res 1997;11: 13.
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24. DOI: http://dx.doi.org/10.22490/24629448.10