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HIV GENOME. GENETIC INFORMATION - RNA - RIBONUCLEIC ACIDGENOME - SET OF INSTRUCTIONS IN RNA TO MAKE HIV. HIV GENES. STRUCTURAL [3]GAG - COREPOL - RT - REVERSE TRANSCRIPTASEENV - ENVELOPE - COATREGULATORY [6]TAT, REV, NEF, VIF, VPI, VPU. HIV INFECTION CYCLE. I - ATTACHMENT/ENTRYII - REVERSE TRANSCRIPTIONIII - DNA INTEGRATIONIV - REPRODUCTION OF HIV.
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1. HIV STRUCTURE
INFECTION CYCLE
3. HIV GENOME GENETIC INFORMATION - RNA - RIBONUCLEIC ACID
GENOME - SET OF INSTRUCTIONS IN RNA TO MAKE HIV
4. HIV GENES STRUCTURAL [3]
GAG - CORE
POL - RT - REVERSE TRANSCRIPTASE
ENV - ENVELOPE - COAT
REGULATORY [6]
TAT, REV, NEF, VIF, VPI, VPU
6. HIV INFECTION CYCLE I - ATTACHMENT/ENTRY
II - REVERSE TRANSCRIPTION
III - DNA INTEGRATION
IV - REPRODUCTION OF HIV
8. HIV LIFE CYCLE http://hopkins-aids.edu/hiv_lifecycle/hivcycle_txt.html
9. I - ATTACHMENT/ENTRY HIV COAT PROTEIN
GP 120
CELL COAT PROTEINS
CD4 - RECEPTOR
CCR-5 - CORECEPTOR
10. II - REVERSE TRANSCIPTION HIV RNA COPIED TO HIV DNA
RT - REVERSE TRANSCRIPTASE ENZYME
11. III - HIV DNA INTEGRATION HIV DNA TO CELL’S DNA
INTEGRATED HIV = HIV PROVIRUS
CELL PERMANENTLY INFECTED
12. IV - HIV INFECTION ACTIVE - GENE EXPRESSION AND VIRUS ASSEMBLY - RELEASE OF THOUSANDS OF HIV, CELL DIES
INACTIVE - LATENT - NO GENE EXPRESSION
TROJAN HORSE - VECTOR FOR HIV SPREAD THROUGHOUT BODY AND FOR LATER PRODUCTION OF HIV
13. IMMUNE SYSTEM MACROPHAGES - INGEST, DIGEST AND DISPLAY FOREIGH BACTERIA, VIRUSES,… - BECOME ANTIGEN PRESENTING CELL [APC]
APC NOTIFIES CD4 T CELL, T4 CELL
T4 CELL - “CONDUCTOR” OF IMMUNE
NOTIFY B AND T8
15. B CELLS PRODUCE ANTIBODY
ANTIBODY LEADS TO KILLING OF FREE VIRUS
16. T8 CELLS T8 CELLS BECOME T-KILLER CELLS
T-KILLER CELLS KILL HIV INFECTED CELLS
18. HIV AND IMMUNODEFICIENCY HIV INFECTS AND KILLS T4 CELLS
T4 = CONDUCTOR
HIV ACTIVE AND PROGRESSIVE - KILLS UP TO 1 BILLION T4 CELLS PER DAY PER 10 YEARS
19. HIV AVOIDS IMMUNE CLEARANCE MUTATION - INFECTION BY 1, TO THOUSANDS OF TYPES - “SWARM” - CHANGE COAT - EVADE IMMUNE
HIV SANCTUARIES
CELLULAR - INACTIVE PROVIRUS
ANATOMICAL - CNS
20. VARIABILITY IN OUTCOME RAPID/TYPICAL/NON-PROGRESSOR
INDIVIDUAL VARIATION
RESISTANCE TO INFECTION
VIRAL VARIATION
STRONG/WEAK STRAINS
22. RESISTANCE TO INFECTION CCR-5 - HIV-1 CO-RECEPTOR
DCCR-5 - HIV-1 CAN’T ATTACH
MUTANT [DCCR5 GENE]
2 - RESISTANT TO INFECTION
1 - SLOWS INFECTION/PROGRESSION
0 - NORMAL INFECTION
24. WEAK HIV STRAIN SYDNEY BLOOD BANK - SYDNEY COHORT - 1 MALE BLOOD DONOR - HIV+ - ‘81-84
DONOR + 6 TRANSFUSION RECIPIENTS - ASYMPTOMATIC, STABLE T4 CELL NUMBER, LOW VIRAL LOAD, 10 - 14 YEARS
ATTENUATED - SIMILAR TO SIV D 3