Staphylolysins

Definition

Staphylolysins are exotoxins produced by staphylococcal bacteria that lyse red blood cells and other cell types. They play a significant role in the pathogenicity of staphylococcal infections by damaging host tissues.

5 Must Know Facts For Your Next Test

1. Staphylolysins contribute to the virulence of Staphylococcus aureus by destroying host cells, including red blood cells.
2. There are different types of staphylolysins, such as alpha-toxin and beta-toxin, each with specific mechanisms of action.
3. Alpha-toxin forms pores in cell membranes leading to cell lysis and death.
4. Beta-toxin exhibits sphingomyelinase activity, breaking down sphingomyelin in the host's cell membranes.
5. Staphylolysins can trigger an immune response that exacerbates tissue damage during infection.

Related terms

Exotoxin: A toxin released by bacteria into the surrounding environment.

Sphingomyelinase: An enzyme that breaks down sphingomyelin, a component of cell membranes.

Virulence Factor: A molecule produced by pathogens that contributes to the pathogenicity or severity of an infection.