Podcast
Questions and Answers
What is the main reason why the pathogenic mechanisms for enteric protozoans are not fully understood?
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?
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?
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?
What is the relationship between different protozoans and types of diarrhea?
How is the diagnosis of GI protozoal infections usually made?
How is the diagnosis of GI protozoal infections usually made?
Which method can be used to examine trophozoites?
Which method can be used to examine trophozoites?
How are protozoal cysts or oocysts best demonstrated?
How are protozoal cysts or oocysts best demonstrated?
Why are Cryptosporidium spp. oocysts difficult to detect?
Why are Cryptosporidium spp. oocysts difficult to detect?
What diagnostic tools can aid in the diagnosis of GI protozoal infections?
What diagnostic tools can aid in the diagnosis of GI protozoal infections?
Where are zoonotic assemblages of Giardia occasionally found?
Where are zoonotic assemblages of Giardia occasionally found?
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.
