H pylori, Y enterocolitica

Question 1

Uses invasin for M cells

Answer 1

Yersinia enterocolitica

Question 2

mimics appendicitis

Answer 2

Yersinia enterocolitica

Question 3

Grows slow at cool temps, can be spread by transfusion

Answer 3

Yersinia enterocolitica

Question 4

Causes ulcers

Answer 4

Helicobacter pylori

Question 5

H pylori virulence

Answer 5

Urease raises pH and allows growth in stomache

Question 6

human reservoir with smoking risk factor

Answer 6

H pylori

Question 7

Detection with CLO test

Answer 7

H pylori

(detects urease activity)

Question 8

microaerophil environment with 7 day incubation

Answer 8

H pylori

Question 9

YOP virulon

Answer 9

Yersinia enterocolitica

made when Ca is low

Question 10

Yersinia enterocollitica treatment

Answer 10

Supportive is remains in GI

Aminoglycosides, tetracyclines if systemic

Question 11

Why can’t you find Y enterocolitica on MacConkey

Answer 11

Outgrown by other bacteria

so slow, culture is retrospective

Question 12

Pork

Answer 12

Yersinia enterocolitica

infects animals from environment

Question 13

Y entericolitica transmission

Answer 13

fecal-oral

winter

Question 14

Gram (-) coccobacillus

Answer 14

Y entericolitica

Question 15

Detected with Geisma stain

Answer 15

H pylori

Question 16

Grows under mucous in stomach

Answer 16

H pylori

Question 17

cag PGI

Answer 17

H pylori

messes with cell signaling, produce less acid

Question 18

Organisms that bind to and communicate with host, don’t enter cell

Answer 18

EPEC, EHEC, H pylori

Question 19

Multiple adhesions to avoid damage

Answer 19

H pylori, moves to edge of ulcer

Question 20

What happens if an M cell takes up yersinia enteroltica?

Answer 20

Y entericolitica starts expressing YOP and M cell kills itself (at 37 deg with low Ca)