Erythrogenic toxin

Definition

Erythrogenic toxin is an exotoxin produced by certain strains of Streptococcus pyogenes. It is responsible for the rash in scarlet fever and can act as a superantigen, leading to an exaggerated immune response.

5 Must Know Facts For Your Next Test

1. Erythrogenic toxin is produced by Streptococcus pyogenes.
2. It causes the characteristic rash seen in scarlet fever.
3. The toxin acts as a superantigen, leading to an intense immune response.
4. There are three types of erythrogenic toxins: A, B, and C.
5. Detection of erythrogenic toxin can aid in diagnosing streptococcal infections.

Review Questions

• Which bacterial species produces erythrogenic toxin?
• What clinical condition is associated with the rash caused by erythrogenic toxin?
• How does erythrogenic toxin affect the immune system?

Related terms

Streptococcus pyogenes: A Gram-positive bacterium that causes various infections including pharyngitis and skin infections.

Scarlet Fever: An illness characterized by a red rash, high fever, and sore throat caused by Streptococcus pyogenes producing erythrogenic toxin.

Superantigen: A class of antigens that result in excessive activation of the immune system by non-specifically binding to T-cell receptors.