immune response to infectious diseases.pdf
TRANSCRIPT
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InfectiousDiseases
20110430
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ImmunedefenseVSpathogen infection
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ViralInfections
ProtozoanDiseases
DiseasesCaused
by
Parasitic
Worms
(Helminths)
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sitesofinfection
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Mechanismsofviralentryintohost
.
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acuteinfectionsandpersistent
infection
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Hostresponseagainstacuteinfection
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Theinnateimmuneresponsetoviral
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AdaptiveImmuneResponsetoViral
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VirusesCanEvadeHostDefense
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n uenzav rus
n ect on
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Sitesofinfluenzaentryinthe
respiratory
tract.
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Theadaptiveimmuneresponseduring
infectionwith
influenza
virus.
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influenzaVirusesEvadedHostDefense
Mechanisms
Thevirus
can
change
its
surface
antigens
so
completelythattheimmuneresponse
variationinHAandNA:antigenicdriftand
antigenics i t.
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Antigenicshift
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Inactivatedvirus
Recombinantsubunit,DNAandvectored
vaccines. Universalinfluenzavirusvaccines.
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Newresearchforinfluenza
Eachgroupseems tosharearegionofsequence
conservationinthestemthatcanserveasatargetof
broadlyneutralizingantibodiesdirectedtothis
reg on.
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ThethreemainpathwaysofHBvreplicationin
e g
pos ve
pa en s
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immuneresponsetoHBVinfection
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HBV
HBV
TLRIFN
Ttreg
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Differenthepaticantigenpresentingcellsuse
B7H1
to
promote
local
Tcell
tolerance.
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dendriticcell
me a e HIVtransmission
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CD4andCD8cellnumberduringthe
courseof
HIV
infection
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MechanismsofCD4+TcelldeathinHIVinfection
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d d i i f i
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cDCs andpDCs duringHIVinfection.
viral load and CD4 cell count will help your doctor determine the
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viralload,andCD4cellcountwillhelpyourdoctordeterminethe
right
time
to
start
therapy.
HIVmedicationsorARVtherapy,including:
NNRTIs(ornonNucs):Nonnucleosidereversetranscriptaseinhibitors
NRTIs(orNucs):Nucleosidereversetranscriptaseinhibitors
PIs:Proteaseinhibitors
Entryinhibitors
Integraseinhibitors
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HIV V i
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HIVVaccine
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Immune
Response
to
Bacterial
Infections
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Extracellularbacteria:
Intracellular
bacteria:
againstintracellularbacteria.
I R t B t i l I f ti
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ImmuneResponsetoBacterialInfections
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Antibodymediated
forcombating
extracellularbacteria.
Invademechanismsbyextracellular
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Tuberculosis
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Tuberculosis
Tuberculosis
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Tuberculosis
PhasesofinfectionMycobacterium
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.
The natural history of Mycobacterium
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ThenaturalhistoryofMycobacterium
tuberculosisinfection.
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Macrophagesarekeyeffectorcellsinmycobacterialkilling,butcanalsoprovidea
nichefor
bacterial
multiplication.
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EventsthatmightleadtofailureofBCGindeveloping
countries
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countries
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Causedb ParasiticWorms
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Cestodes (tapeworms) Trematodes (flukes)
(roundworms)
Bodycovering Tegument Tegument Cuticle
Sex Hermaphroditic
schistosomeswhichare
dioecious
Dioecious
Ascariasis,
Examplediseasesin
Tapeworm
infection
Schistosomiasis,
'
dracunculiasis,
elephantiasis,
enterobiasis (pinworm),
umans sw mme s
c a as s,
oo wo m,
onchocerciasis,
trichinosis,trichuriasis
(whipworm)
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Schistosomiasisiscausedbydigeneticbloodtrematodes.
ThethreemainspeciesinfectinghumansareSchistosoma
,
.
,
.
.
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After
infection
with
Schistosomamansoni,
theinitialimmune
response
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Thanksforyourattention!