Introduction to Clinical Immunology An Overview of the Immune System and Its Clinical Applications
What is Clinical Immunology? - Study of the immune system in health and disease - Focuses on immune-related disorders and therapies - Plays a critical role in diagnostics and treatments
Components of the Immune System - Innate vs. Adaptive Immunity - Key cells: T cells, B cells, macrophages, dendritic cells - Organs: Bone marrow, thymus, spleen, lymph nodes
Innate Immunity - First line of defense: Skin, mucosal barriers - Cellular components: NK cells, dendritic cells, macrophages - Inflammatory response and pattern recognition receptors (PRRs)
Adaptive Immunity - Specific immune response mediated by lymphocytes - T cells: Cell-mediated immunity - B cells: Antibody production and memory response
Hypersensitivity Reactions - Type I: Immediate (e.g., allergies, anaphylaxis) - Type II: Cytotoxic (e.g., hemolytic anemia) - Type III: Immune complex-mediated (e.g., lupus) - Type IV: Delayed-type (e.g., contact dermatitis)
Autoimmune Diseases - Immune system attacks self-antigens - Examples: Rheumatoid arthritis, lupus, multiple sclerosis - Mechanisms of self-reactivity and immune tolerance breakdown
Conclusion & Future Perspectives - Advances in immunotherapy and precision medicine - Role of the immune system in cancer and aging - Future trends: mRNA vaccines, gene therapy, artificial immunity