review · European Journal of Clinical Microbiology & Infectious Diseases
Bacteria communicate with one another using chemical signals known as autoinducers, a process termed quorum sensing. This mechanism coordinates group behaviours, including biofilm synthesis and the development of pathogenicity. A wide range of natural compounds and targeted extraction methods have been investigated to disrupt this bacterial dialogue. Quorum sensing inhibitors and quorum quenching enzymes interfere with these signalling pathways and neutralise autoinducers, thereby curbing virulence and stopping biofilm formation. Laboratory research has validated the performance of these inhibitors and enzymes within experimental animal models. These findings have guided recent work toward integrating such biological blockers into new medical devices, particularly wound dressings and catheters, offering an alternative strategy to combat bacterial infections by targeting communication rather than cell viability.
Bacterial infections often become severe and difficult to treat when microbes form protective biofilms and express harmful traits together. By interrupting the chemical communication systems that trigger these behaviours, treatments can reduce bacterial harm without necessarily relying solely on conventional killing mechanisms. This offers potential new avenues for keeping medical equipment clean and preventing hospital-acquired infections.
This research points toward applications in medical device manufacturing, particularly in developing infection-resistant dressings and catheters. The primary commercial users would be medical technology developers and healthcare providers seeking to prevent device-associated bacterial biofilm formation. Because the technology has demonstrated effectiveness in experimental animal models, it appears to sit at an applied preclinical research stage, requiring further translation before reaching real-world use.
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Bacteria have their own language through which they communicate with one another like all higher organisms. So, many researchers are working hard to identify and comprehend the components of this bacterial communication, known as quorum sensing (QS). In quorum sensing, bacteria use signaling molecules called autoinducers (AIs) to exchange information. Many natural compounds and extraction techniques have been intensively studied to disrupt bacterial signaling and examine their effectiveness for bacterial pathogenesis control. Quorum sensing inhibitors can interfere with QS and block the action of AI signaling molecules. Recent research indicates that quorum sensing inhibitors (QSIs) and quorum quenching enzymes (QQEs) show great promise in reducing the pathogenicity of bacteria and inhibiting biofilm synthesis. In addition, the effectiveness of QQEs and QSIs in experimental animal models was demonstrated. These are taken into account in the development of innovative medical devices, such as dressings and catheters, to prevent bacterial infections. The present review highlights this aspect with a prospective vision for its development and application.
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DOI: 10.1007/s10096-024-04920-w
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