The anti-biofilm efficacy of copper and zinc doped borate bioactive glasses

Aim: Healthcare-acquired infections (HAIs) pose significant challenges in medical settings due to their resistance to conventional treatment methods. The role of bacterial biofilms in exacerbating these infections is well-documented, making HAIs particularly difficult to eradicate. Despite numerous research efforts, an effective solution to combat these infections remains elusive. This study aims to explore the potential of metal-ion (copper and zinc) doped borate bioactive glasses (BBGs) as a novel treatment modality to inhibit bacterial species commonly implicated in HAIs: Staphylococcus epidermidis, Escherichia coli, and Pseudomonas aeruginosa.
Methods: The study analyzed the efficacy of both direct and indirect applications of BBGs on severe biofilms pre-formed under static and dynamic growth conditions; a comprehensive predictive modeling was developed, simulating diverse clinically relevant conditions.
Results: Results demonstrate more than 4 log reduction in bacterial growth within 2 days for direct application and 3 days for indirect application of copper and zinc-doped BBGs. These findings were consistent across the three bacterial species, in both static and dynamic conditions.
Conclusion: Copper and zinc-doped BBGs can be an effective approach in combating HAIs complicated by biofilms.
Hospital-acquired infections (HAIs) are common in medical settings and can be difficult to treat because they often involve biofilms – communities of bacteria that are hard to eliminate with antibiotics. Our study examines the use of a biomaterials called borate bioactive glasses (BBGs) enhanced with copper and zinc, which are metals are known for killing bacteria. We tested these materials against common bacteria found in HAIs to determine if they could prevent and break down biofilms. Our experiments showed that these metal-enhanced glasses could significantly reduce bacterial growth within a few days in a various of clinically-relevant scenarios, making them a promising solution for controlling infections in clinical settings. This research could lead to new ways to prevent and treat infections resistant to standard treatments.
Healthcare-acquired infections (HAIs) are infections associated with significant morbidity and mortality and contribute to increased healthcare costs.
The study utilizes common bacterial strains known for their role in HAIs in biofilm-related infections, which are challenging to treat due to their resistance to conventional antibiotics.
The study showed that copper and zinc- doped BBGs effectively disrupted biofilms under both static and dynamic conditions, which are crucial for mimicking various clinical environments where biofilms are prevalent.
Copper and zinc-doped BBGs can potentially reduce the incidence of HAIs infections by preventing and disrupting bacterial biofilms.