Shared Flashcard Set

Details

Retrovirus and HIV
Microbiology
21
Medical
Professional
10/25/2011

Additional Medical Flashcards

 


 

Cards

Term
Where does HIV go in early infection?
Definition
gp120 binds to CD4 cells and CCR5 macrophage and dendritic cells
Term
where does HIV bind in late infection?
Definition
CD4 and CXCR on helper T cells via gp41 fusion
Term
in the HIV life cycle, genomic RNA and mRNA are transcribed from
Definition
proviral DNA
Term
What is the importance of the protease?
Definition
it cleaves the protein to release RT allowing the infectious virus to form.
Term
what is the function of Tat?
Definition
trans activator of transcription

essential in replication
Term
Function of rev
Definition
regulates mRNA synthesis and transport
Term
Function of Nef
Definition
reduces CD4 and HLA class 1 expression
Term
Function of vif
Definition
viral assembly and maturation
Term
Function of vpu
Definition
enhances virion release
Term
Function of Vpr
Definition
nuclear transport of viral cDNA
Term
this is a correlate of high virus load in the blood.
Definition
p24
Term
this lab test detects viral RNA in the blood
Definition
RT-PCR
Term
Tests to diagnose HIV
Definition
ELISA
confirmed by Western Blot
Term
where does HIV maintain a persistent infection
Definition
macrophages and CD4 T cells
Term
Mutation in this gene leads to shift in tropism toward CD4 T cell infection
Definition
env gene
Term
What are the initial symptoms of AIDS
Definition
mono, fever, and widespread lymphadenopathy
Term
What does the treatment HAART consist of
Definition
combination of RT inhibitors w/protease inhibitors
Term
non-nucleoside analog RT inhibitors
Definition
Nevirapine
Term
what is HTLV-1 associated w/
Definition
adult T cell lymphocytic leukemia
tropical spastic paraperesis
Term
HTLV effect on CD4
Definition
viral tax proteins causing activation of IL-2 growth factors
Term
How is HTLV-1 transmitted?
Definition
sexual contact

breast milk
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