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Unformatted text preview: -cell growth – Helper T-cells (CD4) stimulate lymphocytes to reproduce and attack – Suppressor T cells slow down immunity process
Lecture 22 30 Specific Immune System Response: Humoral (Antibody-Mediated) Immunity • Attacks pathogens while they are still in the body fluids, before they invade cells • B cells (which mature in bone marrow) • Antibodies (immunoglobulins, Ig) are proteins that attach to invaders. 5 types
– IgG, IgM, IgA, IgD, IgE Lecture 22 31 Lecture 22 32 Primary vs. Secondary Immune Responses
• Memory Lymphocytes:
– T-cells and B-cells, sensitized to specific antigen – Replicate, held in reserve – More rapid (secondary) response to re-exposure • Way vaccines work
Lecture 22 33 Lecture 22 34 Immune System Disorders
• Immune deficiency
– AIDS-- HIV destroys T-cells and macrophages • Allergies-- extreme immune reaction to allergens • Autoimmune diseases -- immune system attacks the body (suppressor T cell dysfunction)
– Lupus – Rheumatoid arthritis
Lecture 22 35 Immune System Disorders
• Transplant rejection
– Immune system attacks transplanted organ – Counteracted by immunosuppressing drugs – Leaves body vulnerable to other pathogens • Cancer? According to immune surveillance theory
Lecture 22 36 Psychoneuroimmunology
• Study of relations among behavior and the Study nervous, endocrine, and immune systems nervous,
– Proposed after Ader & Cohen found immune Proposed suppression influenced by...
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This note was uploaded on 03/22/2009 for the course PSYCHOLOGY 830 taught by Professor 346 during the Spring '09 term at Rutgers.
- Spring '09