AN EXPERIMENTAL ANALYSIS OF BACTERIAL ALLERGY

Area of Science:

• Immunology
• Microbiology
• Cellular Biology

Background:

• Bacterial allergies differ mechanistically from true protein anaphylaxis.
• Bacterial allergies are crucial in infection, increasing vulnerability to bacterial products.
• Type-specific carbohydrate antigens and their antibodies are not involved in bacterial allergy.

Purpose of the Study:

• To elucidate the mechanism of bacterial allergy.
• To differentiate bacterial allergy from protein anaphylaxis.
• To investigate the role of cellular reactions in bacterial allergy.

Main Methods:

• Active sensitization of guinea pigs with whole bacteria or protein fractions.
• Investigation of passive sensitization using immune sera.
• Incubation of tuberculin (O.T.) with tuberculous lung tissue.

Main Results:

• Active sensitization develops within 10 days and shows relative specificity.
• Passive sensitization attempts were largely unsuccessful.
• Incubation of O.T. with tuberculous tissue produced allergy-like lesions and enhanced tuberculin potency.

Conclusions:

• Bacterial allergy is independent of standard antigen-antibody reactions.
• The allergic substance is a protein or closely associated with bacterial protein.
• Bacterial allergy involves enhanced cellular reactivity, distinct from circulating antibodies.