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Hypersensitivity and Type I Hypersensitivity Quiz

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Hypersensitivity and Type I Hypersensitivity Quiz

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Questions and Answers

Which immunoglobulin is typically involved in Type I hypersensitivity reactions?

IgG

IgM

IgA

IgE (correct)

What is the term for nonparasite antigens that can trigger a Type I hypersensitivity response?

Toxins

Allergens (correct)

Antibodies

Pathogens

Which enzyme allergen is found in the fecal pellets of the common dust mite and is aerosolized easily?

Der P4

Der P3

Der P2

Der P1 (correct)

What genetic trait predisposes individuals to localized anaphylaxis?

Atopy (D) Signup and view all the answers

Which of the following is NOT a candidate polymorphic gene associated with Type I hypersensitivity?

IL-6 Receptor (A) Signup and view all the answers

What is the main function of Class II MHC in relation to allergic responses?

Present peptides promoting Th2 response (C) Signup and view all the answers

What is the role of Fc epsilon receptors (FceR1) on mast cells in allergic responses?

Degranulate the mast cells (C) Signup and view all the answers

What is the immediate effect of histamine release during Type I Hypersensitivity reactions?

Constriction of smooth muscles causing wheezing (D) Signup and view all the answers

How does attachment to Fc receptors affect the lifespan of IgE?

Increases its lifespan to months compared to days in serum (B) Signup and view all the answers

What is the role of high affinity IgE Fc receptor (FceR1) during allergic responses?

Enhance cross-linking of IgE on mast cells (C) Signup and view all the answers