Biofilms--a microbial life perspective: a critical review

Area of Science:

• Microbiology
• Biotechnology
• Infectious Diseases

Background:

• Microorganisms form biofilms, complex communities encased in an extracellular polymeric substance (EPS) matrix.
• Biofilm cells exhibit distinct characteristics, including reduced growth rates and altered gene expression compared to planktonic cells.
• Biofilm formation is influenced by environmental factors like growth medium and surface properties.

Purpose of the Study:

• To summarize the key characteristics and processes of microbial biofilm formation.
• To highlight the public health significance of biofilms, particularly in infectious and device-related diseases.
• To emphasize the need for novel strategies to control and eradicate biofilms due to antibiotic resistance.

Main Methods:

• Literature review and synthesis of current knowledge on biofilm formation.
• Analysis of microbial cell behavior within biofilms versus planktonic states.
• Examination of genetic exchange and quorum sensing mechanisms in biofilms.

Main Results:

• Biofilms provide a protected environment for microorganisms, facilitating genetic material exchange.
• Established biofilms possess a defined architecture and promote microbial survival and proliferation.
• Quorum sensing plays a role in regulating biofilm dynamics, including cell detachment.

Conclusions:

• Biofilms are critical in public health, contributing to persistent infections and device-related complications.
• The ineffectiveness of many antibiotics against mature biofilms necessitates innovative control strategies.
• Further research into biofilm processes is essential for developing effective therapeutic interventions and improving patient care.