Question

What is a unique immune escape mechanism employed by Aspergillus fumigatus?

a) Synthesis of antibodies
b) Production of catalases and superoxide dismutases
c) Activation of T cells
d) Release of pro-inflammatory cytokines

How does the immune response of healthy individuals counteract the immune escape mechanism of Aspergillus fumigatus?

a) By promoting ROS leakage from the phagosome
b) Through the synthesis of catalases and superoxide dismutases
c) Inhibiting the activity of phagocytes
d) Suppressing adaptive immune responses

In the context of Aspergillus fumigatus, what is a key difference in immune response between normal and immunodeficient individuals?

a) Faster elimination of the fungus in immunodeficient individuals
b) Slower elimination of the fungus in normal individuals
c) Enhanced adaptive immune response in immunodeficient individuals
d) Activation of a unique immune escape mechanism in normal individuals

Answer 1

Aspergillus fumigatus employs the immune escape mechanism of producing catalases and superoxide dismutases. Healthy individuals counteract this mechanism through the synthesis of catalases and superoxide dismutases. Immunodeficient individuals may experience slower elimination of the fungus in comparison to normal individuals.

Step-by-step explanation:

A unique immune escape mechanism employed by Aspergillus fumigatus is the production of catalases and superoxide dismutases. These enzymes help the fungus neutralize reactive oxygen species (ROS) produced by the immune system to kill pathogens.

The immune response of healthy individuals counters the immune escape mechanism of Aspergillus fumigatus by synthesizing catalases and superoxide dismutases, which can prevent the fungus from neutralizing ROS effectively.

A key difference in immune response between normal and immunodeficient individuals in the context of Aspergillus fumigatus is that immunodeficient individuals may experience slower elimination of the fungus due to their weakened immune system.