Allergy

From WikiLectures

Allergy is a pathological (inappropriate) reaction of the immune system to external noxa – allergens, which are a common part of our environment (pollen, mold, animals, food, insect stings, etc.). Allergens are mostly substances of protein nature. Simple low molecular weight substances are only partial antigens (haptens), they become a complete antigen only in the organism after binding to a protein. The time before an allergic reaction develops is called the refractory period. The reaction time is the time it takes for a reaction to develop after exposure to the allergen. Shock tissue is the location of the allergic reaction. In the case of contact allergy, the shock tissue is the epidermis. Drug allergies take place in the dermis.

Allergic reactions can be differentiated according to the disorder of the immune mechanisms that caused the allergy.

Immunopathological reaction type I

[edit part] Immunopathological reaction type I

Immunopathological reaction type II

[edit part] Immunopathological reaction type II

Immunopathological reaction type III

[edit part] Immunopathological reaction type III

Immunopathological reaction type IV

[edit part] Immunopathological reaction type IV


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References

  • HOŘEJŠÍ, Václav – BARTŮŇKOVÁ, Jiřina. Základy imunologie. 3. edition. Praha : Triton, 2008. 280 pp. ISBN 80-7254-686-4.