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amoeba Flashcards

1
Q

extraintestinal amoeba

A

E. gingivalis
N. fowleri
Acanthamoeba spp.

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2
Q

assoc with PAM

A

N. fowleri

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3
Q

assoc with GAE and keratitis

A

Acanthamoeba spp

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4
Q

with active varying MULTIPLE pseudopods (long short blunt)

A

E. gingivalis

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5
Q

has sluglike motility
BLUNT pseudopods

A

N. fowleri

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6
Q

has sluggish motility
SPINELIKE PSEUDOPODS (ACANTHOPODIA) - project outward from the base

A

Acanthamoeba spp

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7
Q

no. of nuclei of trophozoites and cysts of extraintestinal amoeba

A

consistently 1!!!

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8
Q

only amoeba that ingests WBC

A

E. gingivalis

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9
Q

only amoeba with NO CYSTS form

A

E. gingivalis

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10
Q

only amoeba with 3 morph form (trophozoites, cysts, flagellate)

A

N. fowleri

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11
Q

extraintestinal amoeba that resembles E. histolytica

A

E. gingivalis

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12
Q

broad anterior end
tapered posterior end

A

N. fowleri

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13
Q

pear shaped form

A

flagellate form of
N. fowleri

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14
Q

has jerky spinning motility

A

N. fowleri flagellate form

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15
Q

has DOUBLE CELL WALL CYST that aids in its ID

A

Acanthamoeba spp
(smooth inner, jagged outer)

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16
Q

spx used to both ID E. gingivalis and E. histolytica

A

pulmonary abscess
sputum

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17
Q

method of choice for N. fowleri trophozoites

A

CSF micro exam

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18
Q

its trophozoites has TRAILING EFFECT on agar pkates inoculated with gram neg bacilli

A

N. fowleri

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19
Q

technique of choice to speciate Acanthamoeba

A

Indirect Immunofluorescent Ab stain

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20
Q

specimen of choice for Acanthamoeba troph and cyst

A

CSF

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21
Q

specimen of choice for Acanthamoeba eye inf

A

corneal scrapings

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22
Q

produce TRACKS as they feed on a non-nutrient agar plate seeded with E. coli

A

Acanthamoeba spp.

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23
Q

stains Acanthamoeba cysts in corneal scrapings

A

Calcofluor white (for histo exam)

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24
Q

first amoeba recovered from human spx

A

E. gingivalis

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25
Q

only form known to exist in humans

A

Trophozoites of N. fowleri

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26
Q

known to exist only in external environment

A

Cyst of N. fowleri

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27
Q

Naegleria spp that could infect humans in the future

Pathogenic in mice

Intranasal installation

A

N. australiensis

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28
Q

aids in taxonomix classification of N. fowleri and Acanthamoeba

A

DNA RFLP tests

29
Q

responsible for most CNS and Eye infection

A

Acanthamoeba castellanii

30
Q

assoc with contact lens wearer

A

Acanthamoeba

31
Q

shares many characteristics with gram neg PSEUDOMONAS AERUGINOSA

A

Acanthamoeba

32
Q

intestinal amoeba

A

E. histolytica
E. hartmanni
E. coli
E. polecki
E. nana
I. butschlii

33
Q

intestinal amoeba assoc with:

Intestinal amebiasis
Amebic colitis
Amebic dysentery
Extraintestinal amebiasis

A

E. histolytica
E. hartmanni
E. coli

34
Q

rapid, UNIDIRECTIONAL, progressive
finger-like hyaline pseudopods

A

E. histolytica

35
Q

Nonprogressive
Finger-like pseudopods

A

E. hartmanni

36
Q

Sluggish, nonprogressive
BLUNT pseudopods

37
Q

intestinal amoeba trophozoites nucleus no.

38
Q

their CYSTS consists of 1-4 nucleus
4 is usually MATURE INFECTIVE CYSTS AND SMALLER

A

E. histolytica
E. hartmanni
E. nana

39
Q

intestinal amoeba with consistently having 1 nucleus in both troph and cysts stage

A

E. polecki
I. butschlii

40
Q

cysts may have 1-8 nucleus or greater than 16

41
Q

has ground glass cytoplasm

A

E. histolytica

42
Q

ingested RBCs

A

E. histolytica (diagnostic feature)

43
Q

beaded appearance of peripheral chromatin

A

E. hartmanni

44
Q

has HYALINE CYSTS WALL

A

E. histolytica

45
Q

has THIN chromatoid bars with pointed to splintered ends

46
Q

young cysts have diffuse glycogen mass that may DISPLACE NUCLEI (often seen in cysts with 2 nuclei)

47
Q

special medium for E. histolytica

48
Q

size ranges overlap; requires OCULAR MICROMETER

A

E. histolytica
E. hartmanni

49
Q

prevalence is similar to that of E. histolytica

A

E. hartmanni

50
Q

only known PATHOGENIC INTESTINAL amoeba

A

E. histolytica

51
Q

vector borne intestinal amoeba

A

E. histolytica
hartmanni
coli

52
Q

NONPATHOGENIC
morphologically identical to E. histolytica

53
Q

small race E. histolytica

A

E. hartmanni

54
Q

has SLUGGISH PROGRESSIVE motility in normal stools

has PROGRESSIVE, UNIDIRECTIONAL motility in diarrheal stools

A

E. polecki

55
Q

nuclear structure resembles E. histolytica and E. coli

A

E. polecki

56
Q

Key feature is ABSENT PERIPHERAL CHROMATIN

A

E. nana
also I. butschlii

57
Q

has SLUGGISH NON PROGRESSIVE motility
BLUNT HYALINE PSEUDOPODS

58
Q

has SLUGGISH PROGRESSIVE motility

A

I. butschlii

59
Q

large irregular blotlike karyosome

60
Q

has ABSENT chromatoid bar

A

E. nana
I. butschlii

61
Q

feature seen in Entamoeba

A

has CHROMATOID BARS

62
Q

has WELL DEFINED GLYCOGEN MASS with DEFINITE BORDERS

A

I. butschlii

63
Q

glycogen mass typically picks up IODINE STAIN

A

I. butschlii

64
Q

parasite of pigs and monkeys

A

E. polecki

65
Q

only discomfort for symptomatic px is diarrhea

A

E. polecki

66
Q

acquired from contaminated HOG feces

A

I. butschlii

67
Q

nucleus does NOT undergo typical division (diff from other intestinal amoeba)

68
Q

cyst nucleus: BASKET OF FLOWERS

A

I. butschlii

Amoeba (1 decks)

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