Lec 2-4 - Parasitology Flashcards Preview

Dental Microbiology > Lec 2-4 - Parasitology > Flashcards

Flashcards in Lec 2-4 - Parasitology Deck (27):
1

2 parasites in the oral cavity

entamoeba gingivalis, trichomonas tenax

2

oral amoebiasis is an infection of the oral cavity with blank... causes periodontitis and gingivitis

E. gingivalis

3

E. gingivalis is not seriously pathogenic but can maintain a stage of blank and allow the growth of blank

chronic irritation, other pathogens

4

tiny flagellate that is a commensal but can take part in the first phases of periodontal tissue destruction

trichomonas tenax

5

virulence factor of trichomonas tenax

acid phosphatase

6

cause of malaria

plasmodium

7

most deadly malaria species

plasmodium falciparum

8

transmission of malaria is via

anopheles (female mosquitos)

9

flu like symptoms from malaria run in blank that are timed with bursting open of rbc which releases debris

cycles

10

malaria that doesnt show periods of cycles

falciparum

11

falciparum is the most severe malaria because it can infect blank

red blood cells of all ages

12

falciparum goes through blank of infected rbc via cytoadherence and rosetting

sequestration

13

attachment to receptors on venular and capillary endothelia

cytoadherence

14

clumping of infected rbc with uninfected rbcs which leads to anoxia

rosetting

15

variant surface antigens of falciparum

PfEMP1 proteins

16

PfEMP1 proteins are present in knob structures on parasitized blank surface

rbc

17

falciparum does not cause malaria blank

relapses

18

malaria types that cause relapses

p. vivax, p. ovale

19

these are found in many people throughout the world and are transmitted via fecal-oral, contaminated meat, trans placental

toxoplasma gondii

20

sexual reproduction of toxoplasma happens only in blank

cats

21

life cycle of toxoplasmas

tachyzoites, zoitocysts, bradyzoites

22

toxoplasma are not a really big deal unless you are blank

immunocompromised or pregnant

23

prevention of toxoplasma by

stay away from cats and litter, wash hands after soil contact like gardening

24

toxoplasma secretes kinases and phosphatases into host cell and messes with blank

transcription

25

most virulent toxoplasma

type 1

26

toxoplasma blank kinase from type 1 that is active and activates blank which is a host transcription factor

rop16, stat6

27

toxoplasma can be treated similarly to malaria but must be taken blank

for life