Enteric Protozoans
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Questions and Answers

What is the main reason why the pathogenic mechanisms for enteric protozoans are not fully understood?

  • Lack of research (correct)
  • Lack of funding
  • Lack of interest
  • Lack of technology
  • Which type of protozoans cause clinical illness by replicating in intestinal cells?

  • Those found on the surface of enterocytes (correct)
  • Those found in fecal matter
  • Those found in water
  • Those that form cysts
  • How do protozoans that are found on the surface of enterocytes cause pathogenesis?

  • By replicating in intestinal cells
  • By releasing toxins (correct)
  • By forming cysts
  • By infecting other cells in the body
  • What is the relationship between different protozoans and types of diarrhea?

    <p>Different protozoans are associated with different types of diarrhea</p> Signup and view all the answers

    How is the diagnosis of GI protozoal infections usually made?

    <p>Based on fecal examination</p> Signup and view all the answers

    Which method can be used to examine trophozoites?

    <p>Direct smear</p> Signup and view all the answers

    How are protozoal cysts or oocysts best demonstrated?

    <p>After fecal concentration</p> Signup and view all the answers

    Why are Cryptosporidium spp. oocysts difficult to detect?

    <p>Because they are resistant to conventional detection methods</p> Signup and view all the answers

    What diagnostic tools can aid in the diagnosis of GI protozoal infections?

    <p>ELISA and PCR assays</p> Signup and view all the answers

    Where are zoonotic assemblages of Giardia occasionally found?

    <p>In dog or cat feces</p> Signup and view all the answers

    Study Notes

    • Pathogenic mechanisms for enteric protozoans are not fully understood.
    • Some protozoans replicate in intestinal cells and cause clinical illness.
    • Others are found on the surface of enterocytes and cause pathogenesis through other mechanisms.
    • Different protozoans are associated with different types of diarrhea.
    • Diagnosis of GI protozoal infections is based on fecal examination.
    • Trophozoites can be examined through direct smear or duodenal aspiration.
    • Protozoal cysts or oocysts are best demonstrated after fecal concentration.
    • Cryptosporidium spp. oocysts are difficult to detect even with fecal concentration.
    • ELISA and PCR assays can aid in diagnosis but have limitations.
    • Zoonotic assemblages of Giardia are occasionally found in dog or cat feces.

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    Description

    Think you know about enteric protozoans and their pathogenic mechanisms? Test your knowledge with this quiz! From replication in intestinal cells to different types of diarrhea, this quiz covers all the key concepts related to GI protozoal infections. You'll learn about diagnosis techniques like fecal examination and the challenges of detecting Cryptosporidium spp. oocysts. Plus, see if you can identify zoonotic assemblages of Giardia occasionally found in dog or cat feces.

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