Hep B/immunology Flashcards
If someone presents with Hep B what will be found in the blood
AgS surface antigen
AgC core antigen
AgSAb surface antibody
AgCAb core antibody
If someone has natural immunity to Hep B what will be found in the blood
AgSAb surface antibody
AgCAb core antibody
If someone has artificial immunity from Hep B what will be found in the blood
AgSAb surface antibody
What are examples of mechanical defences
Lysozyme - tears
Skin
pH levels
Gut acid
Bronchi mucus cilia
Flushing of urinary tract
Coughing
Sneezing
How do viruses cause disease
Attach to the host cell
Penetrate the host cell
Uncoat
Replicate inside the host cell
Assemble
Release
What is an antigen
A virus substance which causes the immune system to produce antibodies
What are antibodies
The host proteins which protect from unwanted substances
Name 3 lymphocytes
B cell
T cell
Large granular lymphocyte
Name 3 phagocytes
Mononuclear phagocyte
Neutrophil
Eosinophil
What soluble mediator do B cells create
Antibodies
What soluble mediator do T cells create
Cytokines
What soluble mediator do large granular lymphocytes create
Cytokines
What soluble mediator do mononuclear phagocytes create
Cytokines and complement
What is phagocytosis
Specialist cells which engulf bacteria and break them down in special compartments containing enzymes and toxic free radicals
What is opsonisation
Helps phagocytic cells to pick up the bacteria
What is neutralisation
Stops bacteria from binding and colonising the tissue
What is inflammation
Recruits other cells to the site of infection to help
What are the primary immune response organs
Bone marrow
Thymus
What are the secondary immune response organs
Lymph nodes
Spleen
Lymphoid tissues
What are the cellular immune response
Leukocytes
What are the soluble immune responses
Antibodies
Complement
Messenger molecules
Anti viral proteins
What is an innate response
Quick reaction
What is an adaptive response
Slow reaction but quicker with secondary exposure
What is HBeAG
In serum indicates active infection and high transmissibility
How long does IgG last
For life
What links to the Hep B core antibody
IgM and IgG
What are the two formats for a vaccine
Plasma derived
Recombinant DNA
Where are B-cells found
In the bone marrow
Where are T - cells found
In lymph cells