Efficacy of alginate-coated gold nanoparticles against antibiotics-resistant Staphylococcus and Streptococcus pathogens of acne origins

Acne is a serious multifactorial inflammatory disease that leads to significant and long-lasting changes. The widespread occurrence of bacterial acne and the excessive use of antibiotics to treat it have increased resistance to antibiotic treatment and led researchers to seek and develop newer antimicrobial agents suitable for various medical purposes. In this study, alginate-coated gold nanoparticles (GANPs), synthesized by the previously reported known method, using sodium alginate and gold salt, investigated the efficacy of the GANPs against various clinical isolates of Staphylococcus, i.e., Staphylococcus aureus, Staphylococcus lentus, Staphylococcus haemolyticus, and Streptococcus thoraltensis, which were all obtained from patients suffering from acne conditions. The results showed that the GANPs had antibacterial efficacy against all the acne-isolated bacteria. The GANP activity against bacterial resistance suggested that metal-based nanoparticulate materials are a promising alternative for treating multidrug-resistant microorganisms.