title: Effect of fatty acids on Staphylococcus aureus delta-toxin hemolytic activity.
abstract: The lysis of human erythrocytes by Staphylococcus aureus delta-toxin proceeded without a lag and was directly proportional to toxin concentration and temperature of incubation. Lysis was complete within 8 min. Addition of saturated, straight-chain fatty acids of 13 to 19 carbons increased the activity of delta-toxin, whereas those with 21 to 23 carbons were inhibitory. Palmitic acid was the fatty acid most active in augmenting delta-toxin, but its effect could be abolished by the simultaneous addition of either tricosanoic acid or egg lecithin.
mesh_terms: D005227:Fatty Acids / Q000494:pharmacology*; D006461:Hemolysis / Q000187:drug effects*; D006801:Humans; D010169:Palmitic Acids / Q000494:pharmacology; D010713:Phosphatidylcholines / Q000494:pharmacology; D013211:Staphylococcus aureus; D014118:Toxins, Biological
chemical_list: D005227:Fatty Acids; D010169:Palmitic Acids; D010713:Phosphatidylcholines; D014118:Toxins, Biological