immunologic drugs Flashcards
nonspecific immunity
physical barriers like mucus production, inflammation, fever, and phagocytosis, initial defense
specific immunity
takes over nonspecific mechanisms fail, targeted for specific antigen, has memory, B and T cells
cell-mediated immunity
T-lymphocytes directly attack antigen
antibody mediated immunity
B-lymphocytes produce antibodies that react to antigen
active immunity
arises when animal receives antigen that activates B cells and T cells, creates memory
passive immunity
arises when animal receives antibodies from another animal, provides immediate immunity
natural immunity
acquired during normal biological experiences
artificial immunity
acquired through medical procedures
vaccines
produce artificial immunity, suspension of weakend (live or killed) microorganism
adjuvants
substances that enhance the immune response
inactivated (killed)
made from microbes, parts or by products, that has been chemically treated to kill the microbe
advantages to killed
safe, stable, unlikely to cause disease
disadvantages to killed
need repeated doses, possible reactions
examples of killed
rabies, bordetella, canine influenza
live
made from live organisms that may be fully active or inactive, not commonly used
advantages to live
fewer doses needed, last longer, inexpensive
disadvantages to live
residual virulence, possible contamination
examples of live
brucella abortus, ecthyma, poultry vaccines
attenuated
microorganisms are inactive but are able to replicate
advantages to attenuated
lasts longer, better efficacy
disadvantages to attenuated
possible abortion, mild forms of the disease, can shed into the environment
examples of attenuated
DHLPP, FVRCP
recombinant
gene or part of microorganism is removed from one organism and inserted into another microorganism
advantages to recombinant
safe, effected, few side effects, varied routes of administration
disadvantages to recombinant
increased cost
recombinant type 1
taking gene from pathogen into recombinant organism
recombinant type II
deleting genes from organism
recombinant type III
insertion of specific pathogenic material into non-pathologic or gene-deleted organism
toxoids
“vaccine” used against toxin or protein rather than bacteria or virus, toxin has been deactivated by heat or chemicals
advantages of toxoids
provides protection against toxin
disadvantages of toxoids
shorter duration of effectiveness, may contain adjuvants
antitoxins
contain antibodies, obtained from animal that has been hypersensitized to neutralize toxins
antitoxin advantages
quick protection from toxin
antitoxin advantages
short-lived protection, may contain preservatives
antiserum
antibody rich serum obtained from infected animal
advantages to antiserum
provides quick protection against microorganism
disadvantages to antiserum
shorter duration and effectiveness, may contain adjuvants
autogenous
produced for specific disease in a specific area from sick animal
advantages to autogenous
provides protection against specific organism
disadvantages to autogenous
may contain endotoxin and by-products
examples of autogenous
strangles vaccine
multi-valent
polyvalent
single valent
monovalent
what can cause vaccine failure
heat, improper storage, inadequate handling, immunosuppression, maternal antibodies
maternally derived antibodies
antibodies that offspring receive passively from mother
possible vaccine reaction
reaction at inj location, facial swelling, redness, hives, fever lethargy, vomiting, salivation, dyspnea, sarcoma, hemolytic anemia
what vaccine can you not give a pregnant animal?
live vaccines