Lec 7-3 - Enterobacteriaceae Flashcards Preview

Dental Microbiology > Lec 7-3 - Enterobacteriaceae > Flashcards

Flashcards in Lec 7-3 - Enterobacteriaceae Deck (45):
1

entero are gram blank

negative rods (motile or non motile)

2

entero do not form blank

spores

3

entero grow better with blank but can grow without it

air

4

entero are killed by temperatures above blank

60 degrees C

5

entero are not killed by

freeze/thaw

6

• E. coli
• Klebsiella pneumonia
• Enterobacter
• Citrobacter
• Salmonella
• Shigella
• Serratia
• Proteus
• Providencia
• Morganella
• Yersinia sp., including Y. pestis
• Noted
are all blank

enterobacteriaceae

7

• Campylobacter
• Vibrio
• Aeromonas
• Plesiomonas
• Helicobacter
• pseudomonas
are all blank

not entero

8

lactose fermenting gram negative rods are called blank

coliforms

9

increased coliform means increased blank of things like water

fecal contamination

10

selective indicator agar for enterics

macconkey agar

11

on macconkey plate, lactose fermenters turn blank and non lactose fermenters turn blank

pink, white

12

most abundant microbe in the colon capable of growing aerobically

e coli

13

surface marker antigens of e coli

o, h, k

14

antigen of e colithat has somatic antigens, is stable to boiling, and is a repeating sugar on LPS

O

15

antigen of e coli that has flagellar antigens coming out from all sides (halo)

H

16

antigen of e coli that are capsular antigens which some e coli has but some dont

K

17

two diarrheagenic e coli we need to know

ETEC, STEC (EHEC)

18

most common cause of travelers diarrhea in third world countries

etec

19

etec strains can produce these toxins

LT, ST

20

LT is heat blank

labile

21

ST is heat blank

stable

22

LT stimulates blank

cAMP

23

ST stimulates blank

cGMP

24

LT and ST are both enterotoxins and both pour out blank

watery fluid

25

the e coli more common in developed countries

EHEC/STEC, bloody diarrhea

26

transmission from blank can occur with EHEC/STEC

waterparks/swimming pools

27

most notorius EHEC strain that is more virulent

strain 0157

28

only EHEC blank enter the body but the blank do not

toxins, bacteria

29

stx1 of ehec works by cleaving a particular adenine residue from 16S rRNA which halts blank

protein synthesis

30

stx2 is like stx1 but it also blocks blank not just halts it

protein synthesis

31

blank is worse than blank

stx2, stx1

32

most common cause of uti in outpatients

e coli

33

second most common cause of uti in outpatients

proteus

34

infection confined to the urinary bladder

cystitis

35

more severe version of cystitis that extends to the ureters and kidney

pylonephritis

36

all e coli express this type of pili

1

37

invasive enteric infectious organisms that dont just stay in the lumen and go into the mucus and are invasive

salmonella, shigella

38

shigella are most likely to produce blank which is a terrible diarrhea that is chronic and is the butts equivalent of dry heaving

shigella

39

detecting salmonella and shigella on macconkey agar would show blank

white colonies

40

new sensitive agar for detecting salmonella

XLD agar

41

salmonella produces blank colonies on XLD

black (easy to spot)

42

blank inocolum pathogens are usually in contaminated water or food held at higher temperatures like salmonella... secondary cases are rare

high

43

blank inoculum pathogens can be transmitted by bodily contact, swimming pools, ice, can have secondary cases like cruise ships

low

44

most common cause of salmonella food poisoning like in eggs, chicken, pet reptiles

salmonella enterica

45

salmonella naming

o E.g. Salmonella enterica Serotype Enteritidis
o Or Salmonella enterica Serotype Saintpaul