What triggers the acute inflammatory reaction in Dermatophilus congolensis infections?

In infections caused by Dermatophilus congolensis, the acute inflammatory reaction is primarily triggered by the germination of zoospores into hyphae. This process is crucial because Dermatophilus congolensis exists as zoospores in moist environments, and upon contact with suitable conditions on the skin, these zoospores germinate and form filamentous structures known as hyphae.

The transition from zoospores to hyphae is significant as it represents an active form of the organism that can invade and damage host tissues, leading to an inflammatory response. The body's immune system recognizes the presence of these hyphae as a threat and responds by initiating an acute inflammatory reaction. This reaction is characterized by the migration of immune cells to the site of infection, which is an essential part of the body’s defense mechanism.

Understanding this mechanism underscores the importance of managing moisture and skin integrity in animals to prevent infections by Dermatophilus congolensis, as moist conditions favor the yeast-to-hyphae transition that triggers the inflammation.