Gastrointestinal protozoan diseases?

What is amoebiasis? What organism causes it? Is it aerobic or anaerobic?

• an intestinal disease caused b infectious amoebae

• causes by Entamoeba primary

• anaerobic

What are the two forms Entameoba are found in? How are each important to infection?

• trophozoite = motile and active form

  • obligate anerobes

  • dies quickly outside. the body = symptoms

• Cysts = dormant, hary, inactive

  • form in soil/ water form fecal cntmaination

  • infects quickly

What is amoebic dysentery? How are the symptoms different form bacteria dysentery? 

• causes by Entamoeba histolytica = blood/mucus in the stool 

• Different = generally lower fever than abterial dysentery 

How is amoebiasis diagnosed? How is it treated? 

• Diagnosis = Fecal smears look for ameoba ( free-living or cycts) 

  • suspected cases confirm with blood test 

• Treatment = antiprotozoals = metronidazole: attacks anaerobic organisms

  • And hydration

What disease is caused by Giardia? Is it anaerobic or aerobic organism 

• Intestinal disease 

• anaerobic organism

How is it transmitted? Where does it infect? What does it do when it infects?

• Transmitted = cysts ingested form fecal contaminated food or water

  • human to human/ zoonotic

• Infect = small intestine and colonize and block absorption of fluids and nutrients 

What are the symptoms of giardia? How is it diagnosed? 

• most = no symptoms 

  • Diarrhea, fatigue/ weight loss, stomach cramps, gas, bloating, greasy, floating foul-smelling stool, fever = rare

• Diagnosis = feca smear/ string test

What is the string test?

• string test = swallow capsule w/ string attached, allow capsule yo pass infection, pull string back and examine for giardia.