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Chapter 39 Agents That Affect Immunity Immune System Functions Recognize and dispose of foreign material such as: Bacteria Viruses Fungi Protozoa Worms Drugs Food Transplanted organs 39 - 2 Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved. Immune System Responds to foreign agents (antigens) Forms antibodies Recognizes and destroys antigens Reason for an allergic reaction 39 - 3 Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved. Types of Immunity Active immunity Administration of an antigen, a weakened or killed vaccine 39 - 4 Stimulates your immune system to form antibodies against the disease Lasts for many years (continues) Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved. (continued) Types of Immunity Passive immunity Administration of preformed antibodies Provides instant protection Short duration 39 - 5 Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved. Interferons and Interleukins Low molecular weight proteins Regulate the immune and inflammatory response They are used to: Treat cancer Stimulate T cell production Promote blood cell formation Treat several inflammatory diseases 39 - 6 Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved. Immunosuppressant Agents Prevent organ rejection Kidney Liver Heart Lungs Mechanism of action is unclear They suppress T lymphocytes Combined with corticosteroids 39 - 7 Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved. Avoid Infections Clients need to avoid infection. Go out, but wear a mask Immunosuppressant agents are expensive. Cost $50,000/year or more Require federal and state assistance 39 - 8 Copyright 2007 Thomson Delmar Learning, a division of Thomson Learning Inc. All rights reserved.