The LasR-dependent and RhlR-dependent quorum-sensing systems are global regulators of gene expression in Pseudomonas aeruginosa. Previous studies have demonstrated that promoter elements of the quorum-sensing-controlled genes lasB and hcnABC are important in density-dependent regulation. We have identified LasR- and RhlR-dependent determinants in promoters of quorum-sensing-controlled genes qsc...

Quorum sensing (QS) is a chemical communication process that Pseudomonas aeruginosa uses to regulate virulence and biofilm formation. Disabling of QS is an emerging approach for combating its pathogenicity. Silver nanoparticles (AgNPs) have been widely applied as antimicrobial agents against human pathogenic bacteria and fungi, but not for the attenuation of bacterial QS. Here we mycofabricated...

Aim: In this it is aimed to the determine presence of virulence resistance genes (toxA, algD, plcN, lasB, plcH) in P. aeruginosa isolates isolated from blood samples.
 Materials and methods: DNA extraction study was done by boiling method. Optimization using positive control after extraction. After optimization, investigated polymerase chain reaction (PCR) method.
 Results: As a resul...

LaSb2 is found to be an example of exceptionally pressure sensitive and tuneable, two-dimensional compound. In-plane electrical resistivity under up 12.9 kbar was measured in zero applied magnetic field. The charge density wave transition (observed at ?350 K ambient pressure) completely suppressed by 6–7 with a significant (in comparison the increase Fermi surface gapping hysteresis just above ...

Quorum sensing (QS) is a key regulator of virulence and biofilm formation in Pseudomonas aeruginosa and other medically relevant bacteria. Aqueous extracts of six plants, Conocarpus erectus, Chamaesyce hypericifolia, Callistemon viminalis, Bucida buceras, Tetrazygia bicolor, and Quercus virginiana, were examined in this study for their effects on P. aeruginosa virulence factors and the QS syste...