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Related Concept Videos

Biofilms01:29

Biofilms

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Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
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Bacterial Signaling01:30

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Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
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Biofilms.

Sigrun Eick1

  • 1Department of Periodontology, Laboratory of Oral Microbiology, School of Dental Medicine, University of Bern, Bern, Switzerland, sigrun.eick@zmk.unibe.ch.

Monographs in Oral Science
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Summary
This summary is machine-generated.

Microorganisms form biofilms, communities attached to surfaces, which are difficult to treat due to their protective matrix. New strategies targeting biofilm composition and communication are needed for effective infection control.

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Area of Science:

  • Microbiology
  • Biotechnology
  • Medical Science

Background:

  • Most microorganisms exist in surface-attached communities called biofilms, not as free-floating planktonic cells.
  • Biofilm formation involves gene expression changes and matrix production, providing stability and protection.
  • Biofilms are implicated in various infections, including chronic wounds, cystic fibrosis, and prevalent oral diseases like dental caries and periodontitis.

Purpose of the Study:

  • To highlight the significance of biofilms in microbial communities and their role in health and disease.
  • To explain the structural components and protective functions of the biofilm matrix.
  • To discuss the challenges in treating biofilm-associated infections and potential therapeutic strategies.

Main Methods:

  • Review of existing literature on microbial biofilm formation and associated diseases.
  • Analysis of the structural composition and protective mechanisms of the biofilm matrix.
  • Exploration of current and emerging therapeutic approaches for biofilm infections.

Main Results:

  • Biofilms are complex communities with a protective matrix composed of polysaccharides, proteins, and extracellular DNA.
  • Key pathogens within biofilms drive disease progression, such as mutans streptococci in dental caries and Porphyromonas gingivalis in periodontitis.
  • Biofilm-associated infections are challenging to treat due to the matrix barrier and resistant dormant bacteria.

Conclusions:

  • Biofilms represent a critical microbial lifestyle with significant implications in medicine and dentistry.
  • Effective treatment of biofilm infections requires strategies that disrupt the matrix, inhibit communication, or target resistant subpopulations.
  • Understanding biofilm dynamics is essential for developing novel therapeutic interventions.