Publications by authors named "Daniela Pena Hernandez"
Objective: To establish the lowest effective dose of commercially available nanoparticulate silver (AgNP) for antibacterial activity against Escherichia coli (E coli) and methicillin-resistant Staphylococcus pseudintermedius (MRSP), in vitro, and to establish the effect of incorporating AgNP into carriers for sustained release on this antibacterial activity.
Samples: Silver nanoparticle dispersion (0.02 mg/mL) composed of citrate-stabilized, spherical, 10 nm diameter nanoparticles in aqueous buffer.
Nosocomial salmonellosis in hospitalized animals is a recognized hazard, especially in large animal clinics. A standardized culture protocol (SCP) for detecting Salmonella spp. in environmental samples using a 48-h enrichment step results in a 5-day turnaround time for negative results.
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- The study aimed to evaluate the antimicrobial effectiveness of antibiotic-impregnated calcium sulfate beads over a 12-month storage period by measuring the zone of inhibition against certain bacteria.
- Results indicated that the antimicrobial activity remained largely unaffected by storage duration, with consistent results for most antibiotics, except for vancomycin against Pseudomonas aeruginosa.
- The findings suggest that, if stored properly, these antibiotic-impregnated beads can maintain their effectiveness for at least a year.