A review of bacterial biofilm control by physical strategies

Liú, Dan; Huang, Quanfeng; Gu, Wei-Ming; Zeng, Xin‐An

doi:10.1080/10408398.2020.1865872

Cited by 36 publications

(8 citation statements)

References 160 publications

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“…The biofilm removal is mainly attributed to the ultrasound treatment, and the bactericidal action can be caused by both ultrasound and thermal treatment. The shear force, shock waves, micro-streams, and micro-jets generated from ultrasound are believed to effectively disrupt the biofilm structure and fragment the biofilm on the surface [32] . The liquid jets normally occur when the cavities implode near the boundary of container.…”

Section: Resultsmentioning

confidence: 99%

In vitro and in silico approaches to investigate antimicrobial and biofilm removal efficacies of combined ultrasonic and mild thermal treatment against Pseudomonas fluorescens

Jiang

Chen

et al. 2022

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

In vitro and in silico approaches to investigate antimicrobial and biofilm removal efficacies of combined ultrasonic and mild thermal treatment against Pseudomonas fluorescens

Jiang

Chen

et al. 2022

Ultrasonics Sonochemistry

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“…Biofilm-dwelling bacteria in natural and engineered systems are genotypically and phenotypically diverse. ,− Therefore, the biofilm formed on permeable membrane surfaces was treated with optimized LICAP to test the feasibility of our approach to treat environmentally relevant biofilms. After 20 min of LICAP treatment, the abundance of bacteria decreased by about 49% based on 16S rRNA quantitation (Figure A).…”

Section: Resultsmentioning

confidence: 99%

Bacterial Inactivation and Biofilm Disruption through Indigenous Prophage Activation Using Low-Intensity Cold Atmospheric Plasma

Huang

Chen

et al. 2022

Environ. Sci. Technol.

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Biofilms can be pervasive and problematic in water treatment and distribution systems but are difficult to eradicate due to hindered penetration of antimicrobial chemicals. Here, we demonstrate that indigenous prophages activated by low-intensity plasma have the potential for efficient bacterial inactivation and biofilm disruption. Specifically, low-intensity plasma treatment (i.e., 35.20 W) elevated the intracellular oxidative reactive species (ROS) levels by 184%, resulting in the activation of prophage lambda (λ) within antibiotic-resistant Escherichia coli K-12 (lambda+) [E. coli (λ+)]. The phage activation efficiency was 6.50-fold higher than the conventional mitomycin C induction. Following a cascading effect, the activated phages were released upon the lysis of E. coli (λ+), which propagated further and lysed phage-susceptible E. coli K-12 (lambda−) [E. coli (λ−)] within the biofilm. Bacterial intracellular ROS analysis and ROS scavenger tests revealed the importance of plasma-generated ROS (e.g., •OH, 1O2, and •O2 –) and associated intracellular oxidative stress on prophage activation. In a mixed-species biofilm on a permeable membrane surface, our “inside-out” strategy could inactivate total bacteria by 49% and increase the membrane flux by 4.33-fold. Furthermore, the metagenomic analysis revealed that the decrease in bacterial abundance was closely associated with the increase in phage levels. As a proof-of-concept, this is the first demonstration of indigenous prophage activations by low-intensity plasma for antibiotic-resistant bacterial inactivation and biofilm eradication, which opens up a new avenue for managing associated microbial problems.

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“…Certain bacterial cell forms, such as endospores or biofilms, are covered by polysaccharide-protective layers efficient against environmental threats, typically the immune system. Although granting some protection, these layers do not provide resistance to NTP-mediated damage (Julák et al 2020 , Paldrychová et al 2020 , Khosravi et al 2021 , Das et al 2022 , Liu et al 2022 ).…”

Section: Ntp: a Powerful Multi-purpose Toolmentioning

confidence: 99%

Overcoming antibiotic resistance: non-thermal plasma and antibiotics combination inhibits important pathogens

Vaňková,

Julák,

Machková

et al. 2024

Pathogens and Disease

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Antibiotic resistance (ATBR) is increasing every year as the overuse of antibiotics (ATB) and the lack of newly emerging antimicrobial agents lead to an efficient pathogen escape from ATB action. This trend is alarming and the World Health Organization warned in 2021 that ATBR could become the leading cause of death worldwide by 2050. The development of novel ATB is not fast enough considering the situation, and alternative strategies are therefore urgently requested. One such alternative may be the use of non-thermal plasma (NTP), a well-established antimicrobial agent actively used in a growing number of medical fields. Despite its efficiency, NTP alone is not always sufficient to completely eliminate pathogens. However, NTP combined with ATB is more potent and evidence has been emerging over the last few years proving this a robust and highly effective strategy to fight resistant pathogens. This minireview summarizes experimental research addressing the potential of NTP-ATB combination, particularly for inhibiting planktonic and biofilm growth and treating infections in mouse models caused by methicillin-resistant Staphylococcus aureus or Pseudomonas aeruginosa. The published studies highlight this combination as a promising solution to emerging ATBR, and further research is therefore highly desirable.

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A review of bacterial biofilm control by physical strategies

Cited by 36 publications

References 160 publications

In vitro and in silico approaches to investigate antimicrobial and biofilm removal efficacies of combined ultrasonic and mild thermal treatment against Pseudomonas fluorescens

In vitro and in silico approaches to investigate antimicrobial and biofilm removal efficacies of combined ultrasonic and mild thermal treatment against Pseudomonas fluorescens

Bacterial Inactivation and Biofilm Disruption through Indigenous Prophage Activation Using Low-Intensity Cold Atmospheric Plasma

Overcoming antibiotic resistance: non-thermal plasma and antibiotics combination inhibits important pathogens

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