Imm 5 - Immunization And Autoantibodies Flashcards
What is passive immunity?
Give preformed antibodies. This give immediate immunity.
What is the Ab that can be given to neonates to protect against RSV?
Palivizumab.
What type of immunity offers the live vaccine vs the inactivated vaccine?
Live vaccine leads to cellular immunity, creating memory T cells. Inactivated vaccine leads to humoral immunity.
What is Active immunity?
Exposure to foreign antigens. Takes time to develop.
What is Live vaccine and what are examples of it?
Gives a weakened live virus, creating cellular immunity and memory T cells. Examples are MMR, Sabin polio vaccine (the oral polio vaccine), Varicella, Smallpox, Yellow fever, and Intranasal influenza vaccine.
What is Inactivated (killed) virus vaccine and what are examples of it?
Creates humoral immunity. Examples are intramuscular influenza vaccine, Hepatitis A, Rabies, Salk polio vaccine (The injected polio vaccine).
What type of immunity is created in bacterial vaccines and live-attenuated bacteria shots?
Humoral immunity.
What are the three live virus vaccines that can be given in HIV patients w/ CD4 count above 200?
MMR. Varicella. Yellow fever.
What are the Egg-based vaccines?
Influenza vaccine. Yellow fever vaccine. MRR vaccine too but it is such a tiny amount of egg that it doenst matter.
What are non-peptide antigens? What is the relationship to immunity?
They are thymus-independent antigens; they cannot be presented on MHC. This means, no T cell response and therefore no immunologic memory. An example is Lipopolysaccharides, the endotoxin found on G(-) bacteria.
What is thymus-dependent antigens? What is the relationship to immunity?
They are antigens w/ a peptide component. It allows lasting immunity to be conferred to memory B-cells.
What is amyloidosis?
Accumulation of one specific protein in the tissues. This causes beta-pleated sheet sin the tissue, causing it to be thicker and bulkier.
What would Cardiac amyloidosis cause?
Thickening of the heart muscles will lead to CHF. May affect the conduction system which will lead to arrhythmias.
What would Renal amyloidosis cause?
Nephrotic syndrome. Renal failure.
How do we diagnose amyloidosis based on biopsy?
Use Congo red stain: the amyloid tissue will look bright green on polarized light: “apple green birefringement”.
In what disease do we see Anti-IgG antibodies?
Rheumatoid arthritis.