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Flashcards in Lobosea Deck (24)
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Pathogenic and Non Pathogenic Amoeba

Entamoeba histolytica
Entamoeba coli
Entamoeba dispar
Entamoeba polecki
Entamoeba hartmanii
Entamoeba gingivalis
Iodamoeba butschlii
Endolimax nana

1

Can be pathogenic/non pathogenic

Dientamoeba fragilis

2

Mode of transmission of entamoeba gingivalis

Kissing

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Developmental stage of Dientamoeba fragilis and Entamoeba gingivalis

Cystic and trophic stage

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Habitat of Entamoeba gingivalis

Buccal cavities

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Infective stage of Dientamoeba fragilis and Entamoeba gingivalis

Cystic and Trophic stage

6

All of them are non pathogenic except

Entamoeba histolytica

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Stages of Amoeba: Trophozoite

Motile
Feeding/Vegetative stage
One nucleus
Liquid/Watery feces
Non infective stage

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Stages of Amoeba

Trophozoite > Precyst > Cyst > Metacystic Trophozoite

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Stages of Amoeba: Precyst

Transitory stage prior to encystation
Smaller than Trophozoite

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Stages of Amoeba: Cyst

Non motile
Infective stage
4-8 nucleus
Seen in formed stool
Smaller than Trophozoite

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Stages of Amoeba: Metacystic Trophozoite

Transitory stage prior to excystation

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Cause of gingivitis

Entamoeba gingivalis

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Types of intestinal amebiasis

Symptomatic/Acute
Asymptomatic/Chronic

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Incubation period of symptomatic intestinal amebiasis

2-5 days

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Systematic amebiasis is characterized by:

Necrotic, mucosa and abdominal pain

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Stool of systematic intestinal amebiasis is

Bloody and mucus filled

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Asymptomatic amebiasis is characterized by:

Recurrent episodes of dysentery, GIT, disturbances and constipation.

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Stool of asymptomatic amebiasis

Bloody and mucus filled

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Formed from primary intestinal lesions

Extraintestinal lesions

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Common site of extraintestinal amebiasis

Liver (Hepatic amebiasis)

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Other types of extraintestinal amebiasis

Pneumatic Amebiasis
Cerebral Amebiasis

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Laboratory diagnosis of extraintestinal amebiasis can be made through

Serological tests

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Examples of serologic tests for extraintestinal amebiasis

Complementary fixation tests
Hemagglutination test
Immunofluorescent antibody test
Double diffusion