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38 Cards in this Set
- Front
- Back
Small Pox
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Large DNA virus
Eradicated Not doomsday virus |
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Glycosylation
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adding of sugars
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Phosphorylation
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adding of phosphate group
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Proteolysis
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breaking down of proteins
ex. Protease |
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HIV
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single stranded RNA virus
9 genes (influenza has 8) a retrovirus reverse transcriptase- RNA>DNA |
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Cells targeted by HIV
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CD4+ T Cells= T Helper Cells
CD4+ macrophages- presentation to T cells |
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HIV mutates a lot
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reverse transcriptase is a very sloppy enzyme
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3 targets of HIV drugs
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PA- protective antigen
LF-Lethal Factor (breaks down MAP kinase) EF- Edema Factor (adenylate cyclase- makes cAMP) |
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9 genes of HIV
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make 19 proteins
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HIV glycoprotein 120 (gp120)
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attaches to CD4 receptor on T helper cell
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Steps in HIV cycle targeted by drugs
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Reverse Transcriptase
Integrase Protease (prevents cleavage and budding of by virus) |
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Interferons
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-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 |
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Cell Mediated Immunity
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T helper cells and Tc
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Humoral immunity
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B cells and Antibodies
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Why is a HIV vaccine so hard to produce?
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HIV can mutate quickly and frequently
When killed HIV does not retain its antigenecity HIV infection is through genes not muscle |
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3 domains of life
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Bacteria
Archae Eucaryota |
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p41
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p-protein
41-molecualr protein |
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Pro-inflammatory Cytokines/interleukons
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Vascular Permeability- localized swelling to redness, extralasation of phagocytosis
Liver Hypothalamus Fat/Muscle Bone Marrow |
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Liver
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Complement proteins (directly kill/lyse bacteria and coat microbes) produced
-acute phase proteins |
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Hypothalamus and Fat/Muscle
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Fever- microbial replication decreases and immune responses increase
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Bone Marrow
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increase mobilization and production of neutrophils
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Kinases
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phosphorylate other proteins
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Dengue Fever
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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 |
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EBV
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Epstein Barr Virus
almsot everyone comes in contact with it common with mononucleosis and cancer (lymphoma) requires intimate contact |
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Rabies
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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 |
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Pathogenesis of TB
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involves infection of macrophages in the lungs
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Bacterial Conjugation
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allows for genetic material exchange via plasmids
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Botulism
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Common in environment
dangerous when grown in anaerobic and low pH environments like cans of foods treated with botulism antitoxin (serum therapy) |
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Anthrax
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Large, Bacillus, gram positive
sensitive to penicillin |
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Anthrax incidents
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Kameido Facility
Sarin |
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Protists, Protozoa
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responsible for malaria and trypanosomiasis (African sleeping sickness from testse fly)
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Fungi
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mostly pathogenic to those with a suppressed immune system
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RBC invasion
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key and deadly stage of malaria
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Trypanosomiasis
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surface proteina and antigen variation makes it difficult for immune system to handle
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Phagocytes (macrophages and neutrophils)
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have receptors that facilitate phagocytosis process
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Activation of toll like receptors
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leads to specific expression of genes coding for defense proteins
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west nile virus
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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 |
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HPV
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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 |