Nanoparticles combined with cefixime as an effective synergistic strategy against Salmonella enterica typhi

摘要

Enteric fever caused by Salmonella typhi has been the most crucial health issue in rural people, especially in Southeast Asia and Africa. Another disease, Salmonellosis , caused by a large group of bacteria of the genus Salmonella , cause substantial economic loss resulting from mortality and morbidity. Higher concentration and repeated use of antibiotics to treat these diseases will likely develop antibiotic resistance among the microbes. The nanoparticle has good penetration power and can kill microbes. Combining two strategies by using nanoparticles with antibiotics kills microbes and reduces the chances of the development of antibiotics resistance. Silver, Nickel, Copper, and Zinc oxide Nanoparticles were chemically synthesized and characterized in this study. Silver nanoparticles at a concentration of 10?μg/ml inhibit all the strains under study. In comparison, silver nanoparticles (16.90?μg/ml), Nickel nanoparticles (83?μg?ml ?1 ), Copper nanoparticles (249?μg?ml ?1 ), and Zinc oxide (1614?μg?ml ?1 ) along with 50?μg/ml cefixime gave maximum zone of inhibition of 35?mm, 19?mm, 31?mm and 23?mm respectively. The antimicrobial assay showed that silver nanoparticles presented good antibacterial performance against all multi-drug-resistant pathogenic Salmonella sp alone as well as in combinations. The present study proved that silver nanoparticles at the lowest concentration along with cefixime could be a possible alternative to control the multi-drug-resistant pathogens.