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Enhancement Effect of Static Magnetic Field on Bactericidal Activity

This in vitro study reports that a static magnetic field (SMF) combined with paramagnetic calcium-polypyrrole nanoparticles (Ca-PPy) markedly increases bactericidal activity against E. coli and S. aureus. The authors attribute the enhanced killing to increased reactive oxygen species generation and associated…

Mg.ATP-decorated ultrafine magnetic nanofibers: A bone scaffold with high osteogenic and antibacterial properties in the presence of an electromagnetic field.

This in vitro study developed magnetic electrospun nanofibers for bone regeneration and evaluated osteogenic and antibacterial properties. Functionalization with ATP and Mg increased mesenchymal stem cell adhesion, proliferation, and osteogenic marker readouts compared with unmodified fibers. The authors report that…

Microwave radiation is effective at disinfecting dental stone surfaces without changing their physical properties.

This in vitro study tested 900-W microwave radiation regimens (3, 5, or 7 minutes) to disinfect type IV dental stone surfaces contaminated with S. aureus, E. coli, or C. albicans. The authors report that 5 and 7 minutes achieved sterilization for S. aureus, while 3 minutes did not fully sterilize; all times were…

Inactivation of Escherichia coli, Saccharomyces cerevisiae, and Lactobacillus brevis in Low-fat Milk by Pulsed Electric Field Treatment: A Pilot-scale Study.

This pilot-scale study evaluated pulsed electric field (PEF) processing of low-fat milk inoculated with E. coli, S. cerevisiae, or L. brevis. At 10 kV/cm and 200 kJ/L total pulse energy, the study reports multi-log microbial reductions, with >5-log reductions during storage at 200–250 kJ/L and slow regrowth over 15…

Intestinal MMC-related electric fields and pancreatic juice control the adhesion of Gram-positive and Gram-negative bacteria to the gut epithelium--in vitro study.

This in vitro study tested whether a weak electric field reconstructed from duodenal spiking potentials during an MMC cycle affects bacterial adhesion to Caco-2 intestinal epithelial cells. The MMC-related electric field increased adhesion of Lactobacillus and Lactococcus strains, while two pathogenic strains…