The hemostatic system comprises platelet aggregation, coagulation and fibrinolysis and is a host defense mechanism that protects the integrity of the vascular system after tissue injury. During bacterial infections, the coagulation system cooperates with the inflammatory system to eliminate the invading pathogens. However, pathogenic bacteria have frequently evolved mechanisms to exploit the he...

Streptococcus pyogenes isolated from blood and urine samples obtained from a 78-year-old woman was tested for susceptibility, and fluoroquinolone resistance (minimum inhibitory concentration of levofloxacin, 16 microg/mL) was found. DNA amplification and sequencing revealed a serine81-->tyrosine substitution in gyrA and 2 substitutions in parC: serine79-->phenylalanine and alanine121-->valine. ...

Copper complexes of L-alanine, L-arginine, L-histidine, L-lysine, L-proline and L-threonine were studied for their antibacterial activity against Staphylococcus aureus, Streptococcus pyogenes and Escherichia Coli. The complexes of 1-alanine, 1-proline and 1-threonine were nearly as active as ampicillin against Strep. Pyogenes. Mixed complexes of these amino acids showed similar effect. Other co...

Biofilms are extracellular constituents composed of polysaccharides and other substances necessary for bacteria to defend themselves against foreign enemies. Amylase Streptococcus pyogenes is an enzyme that degrades produces nutrients invasion epithelial cells. S. salivarius oral commensal bacterium shows antibacterial activity pyogenes. We investigated the relationship between determine whethe...

Antimicrobial activity of ethanolic extract Aloe vera were observed against Staphylococcus aureus, pyogenes, saprophyticus, Streptococcus pneumoniae and Escherichia coli, Pseudomonas aeruginosa, Klebsiella . leaf gel was used for extraction.Zones inhibition in millimeter to measure the antimicrobial effect. susceptibility test showed that has growth inhibitory effects tested pathogens. Ethanoli...