What is cell-mediated immunity?
Cell-mediated immunity is a type of immunity that involves the activation of immune cells to attack pathogens directly. It is different from antibody-mediated immunity, which involves the production of antibodies to neutralize pathogens.
What role do T cells play in cell-mediated immunity?
T cells play a critical role in cell-mediated immunity by recognizing and responding to specific pathogens.
How does cell-mediated immunity protect against viral infections?
Cell-mediated immunity is effective against viral infections because it can directly attack infected cells and eliminate the virus from within.
What are some examples of diseases that involve cell-mediated immunity?
Examples of diseases that involve cell-mediated immunity include rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE).
What is the relationship between cell-mediated immunity and allergies?
Cell-mediated immunity and allergies are related in that some allergic reactions involve the activation of the cell-mediated immune response. For example, in delayed-type hypersensitivity reactions, immune cells such as T cells and macrophages are activated to attack allergens that are perceived as harmful. However, not all allergies involve cell-mediated immunity, and some allergies involve predominantly antibody-mediated responses.
What causes cell-mediated immune responses in allergies?
Cell-mediated immune responses in allergies can be caused by a variety of factors, including exposure to allergens, genetic predisposition, and environmental factors such as stress and infection.
How are cell-mediated immune responses in allergies diagnosed?
Cell-mediated immune responses in allergies can be diagnosed through a variety of tests, including skin prick tests, intradermal tests, and patch tests. These tests involve exposing the skin to small amounts of allergens and then observing for signs of an immune reaction, such as redness, swelling, and itching.
What are some treatments for cell-mediated immune responses in allergies?
Treatments for cell-mediated immune responses in allergies can vary depending on the specific allergy and the severity of symptoms. Some common treatments include antihistamines, decongestants, and corticosteroids. Allergy immunotherapy may be recommended to help reduce the severity of immune reactions to allergens.