Type II Hypersensitivity

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Type II Hypersensitivity-Brian Catchpole RVC 2008

Production of IgM or IgG to cell surface antigens or extracellular matrix proteins.


"Neutralisation" blockade of receptors:

  • Myasthenia gravis


Immunological attack on target cells, destroying them by:

1. Antibody dependent cell cytotoxicity (ADCC)

  • Pemphigus vulgaris
  • Bullous pemphigoid

2. Complement mediated lysis

  • Self RBC antigen:
    • Immune mediated haemolytic anaemia
  • Foreign RBC:
    • Blood transfusion reaction
    • Haemolytic disease of new born (Rhesus disease in humans and neonatal isoerythrolysis in foals and kittens)
  • RBC parasite:
    • Feline infectious anaemia (Mycoplasma haemofelis)

3. Phagocytosis