PATHOGENIC Flagellates Intestinal

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Last updated 10:10 PM on 9/10/26
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15 Terms

1
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How do we contract Intestinal flagellates?

FECAL-ORAL

eating something contaminated with A CYST

2
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Which is the MOST PATHOGENIC intestinal flagellate?

Giardia lamblia

3
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Why is sickness caused by Giardia lamblia known as beaver fever?

BEAVERS poop in water, cyst in feces, we ingest UNTREATED WATER = beaver fever

4
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What disease does Giardia lamblia cause?

GIARDIASIS, also known as TRAVELER’S DIARRHEA

5
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What are the expected symptoms of an infection of the small intestine from Giardia lamblia (giardiasis)?

GREASY, FOUL-SMELLING, EXPLOSIVE diarrhea

6
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What is the life cycle of Giardia lamblia?

  1. Fecal-oral ingestion of water w/ cyst

  2. Once in the SMALL INTESTINE, they excyst. REMEMBER ONE CYST = 2 TROPH

  3. Binary fission of trophozoites, ATTACHED TO SMALL BOWEL

  4. Encystation as they are pooped out


7
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What are the characteristics of Giardia lamblia TROPHOZOITE stage?

  • OLD MAN FACE.

    • two nuclei

    • ventral sucking disk make up the face

  • FALLING LEAF motility

  • LONG axostyle dividing cell in two

    • w/ symmetry

  • FOUR FLAGELLA


<ul><li><p>OLD MAN FACE.</p><ul><li><p>two nuclei</p></li><li><p>ventral sucking disk make up the face</p></li></ul></li><li><p><mark data-color="#9ea502" style="background-color: rgb(158, 165, 2); color: inherit;">FALLING LEAF</mark> motility</p></li><li><p>LONG axostyle dividing cell in two</p><ul><li><p>w/ symmetry</p></li></ul></li><li><p>FOUR FLAGELLA</p></li></ul><p></p>
8
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What are the characteristics of Giardia lamblia CYST stage?

LOOK FOR THE AXOSTYLE dividing cell in half

  • FOUR NUCLEI

  • PACKED LOOK

  • 8-12um length 7-10 width



<p>LOOK FOR THE AXOSTYLE dividing cell in half </p><ul><li><p>FOUR NUCLEI </p></li><li><p>PACKED LOOK </p></li><li><p>8-12um length 7-10 width</p></li></ul><p></p><p></p>
9
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How is Dientamoeba fragilis transmitted?

Fecal-oral CLOSE CONTACT W ANIMALS

INGESTION OF TROPHOZOITE

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What infection does Dientamoeba fragilis cause?

  • Intermittent diarrhea, LOW-GRADE Eosinophilia

  • Abdominal tenderness


11
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What are the characteristics of Dientamoeba fragilis TROPHOZOITE stage

  • Rounded shape, 5-12um

  • Only 1-2 nuclei USUALLY 2

  • VERY THIN nuclei

  • Karyosome = 4-8 granules


<ul><li><p>Rounded shape, 5-12um</p></li><li><p>Only 1-2 nuclei <mark data-color="#cdbb06" style="background-color: rgb(205, 187, 6); color: inherit;">USUALLY 2</mark></p></li><li><p><mark data-color="#cdbb06" style="background-color: rgb(205, 187, 6); color: inherit;">VERY THIN nuclei</mark></p></li><li><p><mark data-color="#49c203" style="background-color: rgb(73, 194, 3); color: inherit;">Karyosome = 4-8 granules</mark></p></li></ul><p></p>
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Which is the flagellate contracted via sexual intercourse?

Trichomonas vaginalis

INDUSTRIALIZED COUNTRIES

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Where does the Trichomonas vaginalis affect?

Pathogen of UROGENITAL TRACT in both males and females

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What infection does Trichomonas vaginalis cause?

TRICHOMONIASIS

Women - itchy in vagina, CREAMY FOUL SMELLING vaginal discharge

Men - Discharge from penis

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What are the characteristics of Trichomonas vaginalis?

  • PEAR SHAPE

  • Vigorous motility with four flagella

  • SINGLE NUCLEI w/ an AXOSTYLE

Analyzed from vaginal/penile discharge and urine


<ul><li><p>PEAR SHAPE </p></li><li><p>Vigorous motility with four flagella </p></li><li><p>SINGLE NUCLEI w/ an AXOSTYLE </p></li></ul><p>Analyzed from vaginal/penile discharge and urine</p><p></p>