HIV and AIDS Flashcards
week 3
Which type of HIV is most pathogenic?
HIV-1
Zoonisis =
transmitted from animals - humans
What type of virus is HIV?
retrovirus
Genome of HIV
+ve RNA
Does HIV have an envelope?
Yes
How does HIV enter cell?
gp120 binds to cd4 and ccr5
Acute HIV syndrome =
wide dessemination of virus. seeding of lyphoid organs
What period comes after acute HIV syndrome?
clinical latency
What originally drives down viral load?
CD8 cells
On average, how long does it take to develop clinical immunodeficiency
6-8 years
CD4 count for AIDs
<200
AIDS associated infections (<200)
pneymocystis pneumonia
toxoplasmosis
oesophageal candida
AIDS associated infections (<100)
mycobacterium avium intracellulare
cytomegalovirus
Cancer associated with AIDS
Kaposi’s sarcoma
What causes pneumocystis pneumonia
yeast-like fungus pneumocystis jirovecii
What does toxoplasmosis effect?
CNS