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Samenvatting VOLLEDIG IA SAMENGEVAT (alle voorbereidende leerstof + HCs + WCs + PR)

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ALLE leerstof van IA samengevat. Extreem pijnlijk geweest om te maken. Don't try this at home kids.

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IA samenvatting, maar beter
Inhoud
Algemeen ................................................................................................................................................ 4
Soorten agentia ................................................................................................................................... 4
Vormen van symbiose......................................................................................................................... 4
Postulaten van Koch ........................................................................................................................... 4
Bacteriën ................................................................................................................................................. 5
Structuur ............................................................................................................................................. 5
Membranen/buitenkant ................................................................................................................. 5
Cytoplasma...................................................................................................................................... 5
Voortbeweging................................................................................................................................ 6
Sterilisatie ....................................................................................................................................... 6
Pathogene bacteriën ....................................................................................................................... 8
Aanhechting en binnentreding ....................................................................................................... 8
Virulentie factoren .......................................................................................................................... 9
Verspreiding binnen de gastheer .................................................................................................... 9
Antibacteriële middelen ................................................................................................................... 10
Diagnose............................................................................................................................................ 11
Verspreiding ...................................................................................................................................... 12
Schimmels ............................................................................................................................................. 13
Hyfae ................................................................................................................................................. 13
Groei, reproductie en kolonie formatie ............................................................................................ 13
Soorten schimmels............................................................................................................................ 14
Chytridiomycota ............................................................................................................................ 14
Zygomycote ................................................................................................................................... 14
Asocymycota ................................................................................................................................. 15
Basidiomycota ............................................................................................................................... 15
Diagnose............................................................................................................................................ 15
Antischimmelmiddelen ..................................................................................................................... 17
Sterilisatie ......................................................................................................................................... 17
Virussen................................................................................................................................................. 18
Structuur ........................................................................................................................................... 18
Classificatie ....................................................................................................................................... 18
Levenscyclus...................................................................................................................................... 18


1

, Replicatie....................................................................................................................................... 19
Assemblage ................................................................................................................................... 19
Mechanismen van virale infectie ...................................................................................................... 20
Luchtwegen ................................................................................................................................... 20
GI ................................................................................................................................................... 20
Huid ............................................................................................................................................... 20
CNS ................................................................................................................................................ 20
Virale infectie van het hemopoëtische systeem ........................................................................... 21
Virale infectie van de foetus ......................................................................................................... 21
Andere routes ............................................................................................................................... 21
Tropisme en gastheerspecificiteit ................................................................................................. 21
Mechanismen voor interne virale verspreiding ............................................................................ 22
Virus interacties met endotheel ................................................................................................... 23
Verspreiding via zenuwen ............................................................................................................. 23
Antivirale middelen ........................................................................................................................... 24
Parasieten ............................................................................................................................................. 25
Geleedpotigen................................................................................................................................... 25
Protozoa ............................................................................................................................................ 25
Classificatie.................................................................................................................................... 25
Voeding ......................................................................................................................................... 25
Transmissie ................................................................................................................................... 25
Reproductie................................................................................................................................... 26
Soorten.......................................................................................................................................... 26
Helminthen ....................................................................................................................................... 27
Immuniteit .................................................................................................................................... 27
Cestoda ......................................................................................................................................... 27
Trematoda..................................................................................................................................... 28
Nematoden ................................................................................................................................... 29
Immuunsysteem ontwijking.............................................................................................................. 31
Anti parasitaire middelen ................................................................................................................. 31
Immuunsysteem ................................................................................................................................... 33
Sensor cellen ..................................................................................................................................... 34
Specifieke afweer .............................................................................................................................. 34
Secundaire lymfoïde organen ....................................................................................................... 35
Lymfocyten.................................................................................................................................... 36
T-helper cellen .................................................................................................................................. 38

2

,Aspecifieke afweer ............................................................................................................................ 44
Het complement systeem ............................................................................................................. 45
Vrije antilichamen ......................................................................................................................... 45
Patroonherkenning door aspecifieke afweercellen ...................................................................... 46
Fagocyten ...................................................................................................................................... 46
Ontstekingsreactie ........................................................................................................................ 46
ILCs ................................................................................................................................................ 47
Immuun helpende farmaca............................................................................................................... 47
Auto-immuniteit ............................................................................................................................... 47
Maternale immuniteit & het foetale immuunsysteem .................................................................... 48
Het falen van het immuunsysteem ................................................................................................... 50
Ontwijking ..................................................................................................................................... 50
Het ontwijken van cytotoxische T lymfocyten .............................................................................. 50
Voorkomen van lyse door NK cellen ............................................................................................. 50
Interferentie met apoptose .......................................................................................................... 50
Vaccineren ........................................................................................................................................ 51




3

, Algemeen
Soorten agentia
Archaea veroorzaken nooit met ziektes in gedomesticeerde dieren.

• Prionen (= verkeerd gevouwen eiwitten die andere eiwitten verkeerd laten vouwen;
genetische aanleg) zijn niet zichtbaar te maken → eigenlijk alleen in gel zichtbaar
• Virussen zijn 10-8 m groot → met EM zichtbaar
• Bacteriën → 10-6 LM (ricketssiae en chlamydiae kunnen alleen in vitro repliceren)
• Schimmels →10-6 lm (sommige geven toxines af, of infiltreren weefsel → schade bij dier)
• Bepaalde parasieten zijn ook zichtbaar met het blote oog.
• Algen → vaak als plantachtig beschouwt omdat ze chlorofyl hebben. Bij hoge alg-
concentraties kunnen dusdanig hoge toxine concentraties komen die van gevaar zijn voor
dieren.

Bacteriofaag is een virus dat alleen bacteriën infecteert

Vormen van symbiose
Commensalisme → bescherming en voedsel (één profiteert) geen schade aan gastheer

Mutualisme → beide profiteren, geen schade aan gastheer.

Parasitisme → één lijdt, de ander profiteert -alleen de parasiet. Schade aan de gastheer.

Transmissie routes: oraal; dermaal (contact); aerosolen; directe inoculatie (injectie, trauma,
bijten/steken); transplacentaal.

Postulaten van Koch
1. Het micro-organisme moet aanwezig zijn in elk geval van de ziekte
2. Het verdachte micro-organisme moeten kunnen worden geïsoleerd en gegroeid als een
reincultuur
3. Inoculatie van het geïsoleerde micro-organisme in een gezonde gastheer geeft dezelfde
ziekte
4. Hetzelfde micro-organisme moet opnieuw uit de experimenteel geïnfecteerde gastheer
worden geïsoleerd in een reincultuur

Koch geldt niet voor alle agentia (denk aan prionen en virussen; postulaten van Koch zijn gemaakt
voordat virussen ontdekt werden).




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