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BYU General Microbiology Chapter 10 - Dr. Robison
immunization
31
Microbiology
Undergraduate 2
11/06/2012

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Term
edward Jenner
Definition
cowpox protects from smallpox
latin cow = vacca -> vaccine
Term
louis pasteur
Definition
made vaccine against pasteurella multocida
Term
3 types of vaccines
Definition
attenuated live
inactivated (killed), whole or subunit
toxoid
Term
attenuated vaccines
Definition
AKA modifies live vaccines
pathogens are living but have reduced virulence
immune response is from TH1 and cytotoxic T cells
Term
attenuation
Definition
3 ways:
raised in tissue culture cells that they aren't used to, so they give up their ability to cause disease
culture under unusual conditions
manipulate genes
Term
attenuated vaccine pros
Definition
stimulates a strong immune response-> last a long time
people with the vaccine can infect other ppl -> herd immunity
Term
attenuated vaccine cons
Definition
can cause mild infections
pregnant women and immunosuppressed ppl can't get them
vaccines can mutate back to virulent or wild form
Term
inactivated vaccines
Definition
can be whole dead pathogens of parts of pathogens with antigen on them
formaldehyde is used to deactivate them
starts TH2 response -> antibody-mediated immunity
Term
inactivated vaccine pros
Definition
safer than live vaccine- cannot replicate or mutate
Term
inactivated vaccine cons
Definition
no herd immunity
whole agents can start inflammation
microbes don't reproduce -> weak immune response
need multiple doses or adjuvant to make it more effective
Term
toxoid vaccines
Definition
toxins that are modified by heat or chemicals
good for some bacterial diseases
start antibody-mediated immunity
don't replicate -> need multiple doses
Term
passive immunity
Definition
give pre-formed antibodies to patient
used for quick protection
give patient antiserum
Term
antiserum
Definition
contains antibodies from a person or animal that has had the disease
can also pass other viruses and antibodies to thing we don't need
can cause allergic reation
Term
hybridomas
Definition
combination of antiserum with plasma cancer cell
make monoclonal antibodies
alternative to antiserum
Term
serology
Definition
study and diagnostic use of antigen-antibody interactions in blood
Term
immune testing types
Definition
precipitation tests
Agglutination tests
Neutralization tests
labeled antibody tests
Term
precipitation test
Definition
easy
works because antigens and antibody mixed in the right proportions precipitate
Term
radial immunodiffusion
Definition
used to measure how much antibody/immunoglobulin is in serum
how:
make anti-antibodies by putting antibodies into another species
Term
immunoelectorphoresis
Definition
improves resolution of immunodiffusion test
mostly used to show an absence or excess of a certain antigen
Term
what is the biggest difference between the agglutination and precipitation tests?
Definition
in the agglutination test, insoluble particles clump together
Term
what is an example of an agglutination test?
Definition
blood typing
Term
neutralization tests 2 types
Definition
viral neutralization
viral hemagglutination inhibition test
Term
viral neutralization
Definition
useful for viruses that kill cells
virus and blood mixed in culture. If cells don't die, then the person has antibodies against it and are immune.
Term
Viral Hemagglutination inhibition test
Definition
useful for viruses that clump cells instead of killing them.
if serum mixed with virus don't clump, then there is an antibody for the virus that stops it from clumping the RBCs
used for flu, measles, mumps
Term
labeled antibody test
Definition
use antibodies with labels so you can detect them
3 examples:
fluorescent antibody tests
ELISA
Western Blot test
Term
fluorescent antibody test
Definition
use fluor. dyes as labels
dyes antibody without affecting its ability to bind antigen
can be direct or indirect
Term
direct fluorescent antibody test
Definition
used to identify if bacteria is in patient
attach marker onto antibody
let bind to antigen
see if glows
not a quantitative test
Term
Indirect fluorescent antibody test
Definition
same as direct but use 2 antibodies: one tagged, one not tagged.
Term
ELISA
Definition
enzyme-linked immunosorbent assay
checks for presence of antibody or antigen
the enzyme is the label
quantitative
Term
Western Blot test
Definition
detects multiple types of antibodies
Term
immunochromatography
Definition
rapid
tagged antigen linked to color on a porous strip
used in pregnancy tests
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