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2ND YR 1S > PR TRM BLOOD FLUKES > Flashcards

PR TRM BLOOD FLUKES Flashcards

1
Q

Compared to other life cycles, what does Schitosoma spp. lack?

A

No metacercaria

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2
Q

Schistosoma spp.

MOT

A

skin penetration

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3
Q

Schistosoma spp.

IS

A

fork-tailed cercaria

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4
Q

enzymes present in cercaria that is used to break down skin

A

Lytic enzymes

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5
Q

what part of cercaria enters inside the skin

A

only head of cercaria

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6
Q

Cercaria without tail

A

schistosomule

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7
Q

Eggs (embryonated or unembryonated)

A

already embryonated

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8
Q

Egg with larva inside

A

miracidium

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9
Q

Miracidium becomes

A

sporocyst

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10
Q

where free-swimming miracidium emerges

A

Freshwater

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11
Q

Sporocyst reproduce asexually and become free swimming

A

cercaria

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12
Q

swims toward light (detects antigens from human host)

A

Chemotaxis

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13
Q

Schistosoma spp.

Male worm characteristics

A

shorter and thick

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14
Q

Schistosoma spp.

Female worm characteristics

A

longer and thin/slender

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15
Q

Schistosoma spp.

where worms copulate

A

copula

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16
Q

Schistosoma spp.

where female is found on the male

A

inside the gynecophoric canal

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17
Q

Schistosoma spp.

FH

A

man

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18
Q

Schistosoma spp.

IH

A

snails

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19
Q

Schistosoma spp.

Habitat

A

mesenteric veins, blood

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20
Q

Schistosoma spp.

male (testes)

A

testes arranged in one row above ventral sucker

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21
Q

Schistosoma spp.

female (ovary)

A

single pyramidal ovary located in midline

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22
Q

Schistosoma spp.

worm ingest

A

red blood cells

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23
Q

Schistosoma spp.

Purpose of hemoglobinase

A

breaks down globulin and hemoglobin

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24
Q

Schistosoma japonicum

Common name

A

Oriental Blood Fluke

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25
Q

Schistosoma japonicum

Habitat

A

Superior mesenteric vein of small intestine

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26
Q

Schistosoma japonicum

Intermediate Host

A

Oncomelania hupensis quadrasi

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27
Q

Schistosoma japonicum

Adult Stages

A

Largest

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28
Q

Schistosoma japonicum

Location of Ovary

A

Middle

29
Q

Schistosoma japonicum

Egg Production

A

Greatest (3000 eggs per worm pair per day)

30
Q

Schistosoma japonicum

Integumentary Tuberculations

A

None

31
Q

Schistosoma japonicum

Number of Testes

A

6-8

32
Q

Schistosoma japonicum

Eggs

A
  • 50-100 eggs
  • Oval with recurved hook or knob, smallest
  • Acid-fast positive
33
Q

Schistosoma japonicum

Reservoir Host

A

Humans and other mammals (dogs, pigs, cats, carabaos, rodents, monkeys)

34
Q

Schistosoma japonicum

Disease Manifestation

A
  • Snail Fever
  • Pulmonary Schistosomiasis
  • Katayama Syndrome/Fever
  • Colorectal cancer
  • Hyperplasia
  • Ulceration and Intestinal lining
  • Grand abscess
35
Q

Schistosoma japonicum

Type of parasite

A

Romantic parasite due to perpetual copulation

36
Q

Schistosoma japonicum

Sample

A

Stool, rectal biopsy

37
Q

Schistosoma mansoni

Common name

A

Manson’s Blood Fluke

38
Q

Schistosoma mansoni

Habitat

A

Inferior mesenteric vein of the colon

39
Q

Schistosoma mansoni

IH

A

Biomphalaria

40
Q

Schistosoma mansoni

Adult stages

A

smallest

41
Q

Schistosoma mansoni

Location of ovary

A

Anterior 1⁄2

42
Q

Schistosoma mansoni

Egg Production

A

190-300 eggs/day

43
Q

Schistosoma mansoni

Integumentary Tuberculations

A

Prominent/Grossly tuberculated

44
Q

Schistosoma mansoni

Number of Testes

A

8-9 (arranged in a zigzag pattern)

45
Q

Schistosoma mansoni

Eggs

A
  • Elliptical with lateral spine
  • Acid-fast positive
46
Q

Schistosoma mansoni

Reservoir Host

A

Humans, non-human primates

47
Q

Schistosoma mansoni

Disease Manifestation

A
  • Intestinal Bilharziasis
  • Acute Schistosomiasis = Katayama like fever
  • Nephrotic syndrome
48
Q

Schistosoma haematobium

Common name

A

Vesical Blood Fluke

49
Q

Schistosoma haematobium

Habitat

A

Vesical, Prostatic, Uterine Plexuses of the Venous Circulation

50
Q

Schistosoma haematobium

Intermediate Host

A

Bulinus

51
Q

Schistosoma haematobium

Location of ovary

A

Posterior 1⁄2

52
Q

Schistosoma haematobium

Egg Production

A

30 eggs/day

53
Q

Schistosoma haematobium

Integumentary Tuberculations

A

Fine

54
Q

Schistosoma haematobium

Number of Testes

A

4-5

55
Q

Schistosoma haematobium

Eggs

A
  • Elliptical with terminal spine
  • Acid-fast negative
56
Q

Schistosoma haematobium

Reservoir hosts

A

Humans

57
Q

Schistosoma haematobium

Disease Manifestation

A
  • Urinary Bilharziasis, Egyptian Hematuria
  • dysuria and hematuria
  • Granuloma formation : fibrosis and ulceration
  • Bladder carcinoma
58
Q

Schistosoma spp.

Diagnosis

A
  • Stool Exam : Kato-Katz, DFS, FECT
  • Modified Acid-Fast Staining
  • Detection of Eggs in urine
  • Faust-Meleney’s Egg Hatching Technique
  • COPT (Circumoval Precipitin Test)
59
Q

Determine the viability of the egg

A

Faust-Meleney’s Egg Hatching Technique

60
Q

Positive result of COPT (Circumoval Precipitin Test)

A

bleb or septate precipitates

61
Q

COPT (Circumoval Precipitin Test)

Sample

A

serum

62
Q

COPT (Circumoval Precipitin Test)

Reagent

A

Lyophilized schistosome egg

63
Q

Schistosoma spp.

Treatment

A

Praziquantel

64
Q

eggs with hour glass in appearance

A

Schistosoma intercalatum

65
Q

Schistosoma intercalatum

Eggs

A

similar to S. haematobium, there is curvature of the spine, presence of central-bulge

66
Q

Schistosoma sp. with Eggs smaller than S. japonicum

A

Schistosoma mekongki

67
Q

cause swimmer’s itch, lake itch, duck itch

A

Avian Schistosomes

68
Q

sac-like, glandular structure

A

Schistosoma japonicum sporocyst

2ND YR 1S (16 decks)

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