BACTE LEC - Entero Part 3 Flashcards Preview

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Flashcards in BACTE LEC - Entero Part 3 Deck (85)
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1

principle of phenylalanine test

Deamination of phenylalanine to phenylpyruvic acid

2

positive rxn of the phenylalanine test

Positive (green color in the syneresis fluid

3

ONPG meaning

O-nitrophenyl-beta-D- galactopyranoside

4

test for Slow or late lactose fermenter

O-nitrophenyl-beta-D-galactopyranoside

5

only one that is ONPG positive
Salmonella serotype

Salmonella arizonae

6

rxn of citrobacter in ONPG

+

7

E. coli is a normal flora of the

GI tract

8

Closely related to Shigella (DNA homology)

Escherichia coli

9

“Montezuma’s revenge” “turista” Traveller’s diarrhea

Enterotoxigenic E. coli (ETEC)

10

diseases caused by ETEC

“Montezuma’s revenge”
“turista”
Traveller’s diarrhea

11

E. coli strain
Severe epidemic diarrhea = cholera Fever, headache, vomiting, chills

Enterotoxigenic E. coli (ETEC)

12

E. coli strain
Disease = Shigellosis

Enteroinvasive E. coli (EIEC)

13

Invasion of intestinal epithelium
E. coli strain

Enteroinvasive E. coli (EIEC)

14

E. coli strain
Fever, cramps, bloody stool w/ RBCs, neutrophil and mucus

Enteroinvasive E. coli (EIEC)

15

Verotoxin causes what diarrhea

bloody diarrhea

16

Sorbitol negative SMAC

Enterohemorrhagic E. coli (EHEC)

17

Verotoxic E. coli (VTEC)
0157 H7




Enterohemorrhagic E. coli (EHEC)

18

E. coli strain
Hemolytic uremic syndrome

Enterohemorrhagic E. coli (EHEC)

19

E. coli strain
Hemorrhagic colitis

Enterohemorrhagic E. coli (EHEC)

20

strain number of Enterohemorrhagic E. coli (EHEC)

0157 H7

21

Resembles E. coli
Lactose negative & nonmotile
Shigellosis (bacillary dysentery)

Shigella

22

Shigella: lactose (-) or (+)?

Lactose negative

23

Motility of Shigella

nonmotile

24

disease caused by shigella

shigellosis

25

bacillary dysentery

shigellosis

26

with fishy odor

shigella

27

enteric bacteria which causes Bloody, mucoid, diarrheic stool w/ pus cells & fishy odor

shigella

28

significant shigella species [4]

S. sonnei
S. dysenteriae
S. flexneri
S. boydii

29

Shigella spp
Most prevalent in the US
Neurotoxin & enterotoxin
Non-mannitol fermenter

S. dysenteriae

30

Shigella spp.
Beta galactosidase (ONPG +) ODC +

S. sonnei

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