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38 Cards in this Set

  • Front
  • Back
Small Pox
Large DNA virus
Eradicated
Not doomsday virus
Glycosylation
adding of sugars
Phosphorylation
adding of phosphate group
Proteolysis
breaking down of proteins

ex. Protease
HIV
single stranded RNA virus
9 genes (influenza has 8)
a retrovirus
reverse transcriptase- RNA>DNA
Cells targeted by HIV
CD4+ T Cells= T Helper Cells
CD4+ macrophages- presentation to T cells
HIV mutates a lot
reverse transcriptase is a very sloppy enzyme
3 targets of HIV drugs
PA- protective antigen
LF-Lethal Factor (breaks down MAP kinase)
EF- Edema Factor (adenylate cyclase- makes cAMP)
9 genes of HIV
make 19 proteins
HIV glycoprotein 120 (gp120)
attaches to CD4 receptor on T helper cell
Steps in HIV cycle targeted by drugs
Reverse Transcriptase
Integrase
Protease (prevents cleavage and budding of by virus)
Interferons
-proteins that interfere with viruses ability to affect other cells
- increase resistance of other cells to viral infection by activating the destruction of viral dsRNA and inhibiting protein synthesis/translation by virus
-increase activity of natural killer cells to include killing the viral infected cells
-increase the expression of NK ligands on infected cells
Cell Mediated Immunity
T helper cells and Tc
Humoral immunity
B cells and Antibodies
Why is a HIV vaccine so hard to produce?
HIV can mutate quickly and frequently
When killed HIV does not retain its antigenecity
HIV infection is through genes not muscle
3 domains of life
Bacteria
Archae
Eucaryota
p41
p-protein
41-molecualr protein
Pro-inflammatory Cytokines/interleukons
Vascular Permeability- localized swelling to redness, extralasation of phagocytosis
Liver
Hypothalamus
Fat/Muscle
Bone Marrow
Liver
Complement proteins (directly kill/lyse bacteria and coat microbes) produced
-acute phase proteins
Hypothalamus and Fat/Muscle
Fever- microbial replication decreases and immune responses increase
Bone Marrow
increase mobilization and production of neutrophils
Kinases
phosphorylate other proteins
Dengue Fever
infection through mosquitos
that can carry as much as 4 subtypes of the virus
other from mosquito to man
no vaccine
high fever
low white blood cell count
fatal second round
EBV
Epstein Barr Virus
almsot everyone comes in contact with it
common with mononucleosis and cancer (lymphoma)
requires intimate contact
Rabies
passed through direct saliva contact
not curable
very rare
RNA virus
replicates/binds to muscle cells
vaccination available
almost always fatal if vaccine is not administered
Pathogenesis of TB
involves infection of macrophages in the lungs
Bacterial Conjugation
allows for genetic material exchange via plasmids
Botulism
Common in environment
dangerous when grown in anaerobic and low pH environments like cans of foods
treated with botulism antitoxin (serum therapy)
Anthrax
Large, Bacillus, gram positive
sensitive to penicillin
Anthrax incidents
Kameido Facility
Sarin
Protists, Protozoa
responsible for malaria and trypanosomiasis (African sleeping sickness from testse fly)
Fungi
mostly pathogenic to those with a suppressed immune system
RBC invasion
key and deadly stage of malaria
Trypanosomiasis
surface proteina and antigen variation makes it difficult for immune system to handle
Phagocytes (macrophages and neutrophils)
have receptors that facilitate phagocytosis process
Activation of toll like receptors
leads to specific expression of genes coding for defense proteins
west nile virus
spherical mosquito virus that has 20 sides
mosquitos feed on migrating birds (robin)
7 strains
blood transfusion/organ transplant necessary if serious
texan strain is most severe
less severe is african strain
no vaccine
HPV
human papaloma virus
connected with cervical cancer
most common std in the world
found in genital warts cervical cancer, cancer in general
few symptoms
100 different types
HPV 16 and 18 are most common
virus takes over cells and tumor develops
covered y protein shell capsule
vaccine is called guardasil