Intestinal and tissue coccidians Flashcards
Who classified the organisms based on the structure of cells, evolutionary relationships, means of nourishment, & reproductive process?
Robert Harding Whittaker
aid in the penetration of the host cell by releasing enzymes
Rhoptries
Aid Rhoptries in the penetration of the cell
Micronemes
Cryptosporidium does not have which structure present in Apicomplexa?
Apicoplast
Three sequential stages of Apicomplexa life cycle
- Sexual cycle or sporogony
- Asexual cycle or schizogony (merogony)
- Gametogony
With the aid of the enzymes secreted from the organelles in the apical complex (rhoptries & micronemes), the parasite induces the formation of a _____
parasitophorous vacuole
Microgamete and macrogamete forms a ____
zygote
Merogony occurs ___ of the cell while sporogony occurs ____ of host
Inside of cell
Outside of host
Cryptosporidiosis is manifested by _____
Devastating diarrhea
Cryptosporidium occupies the brush borders of _____
Intestinal epithelia
Thin-walled oocyst caused ____
Autoinfection (tip: think sha kasi di na need magsurvive outside)
Cryptosporidum oocyst contains _____ sporozoites
4
Cryptospordium oocyst will stain ____ in Acid-fast staining
Red
TRUE OR FALSE: Halofuginone is treatment for humans infected with cryptosporidium
FALSE, for animals
Only known species of the genus cyclospora that can infect humans
C. cayetanensis (Cayetano)
Cyclospora was identified by ______
Ortega and collaborators
Cyclospora infects epithelial cells of ______
duodenum and jejunum
Type 1 Meront of cyclospora reproduces _____
Asexually
Type 2 Meront of Cyclospora develops into _____
Microgametes and macrogametes
Which of the following oocysts are infectious after release into the environment?
A. Cyclospora
B. Cryptosporidium
B. Cryptosporidum
How many sporozoites do Cyclospora oocyst have?
4 (2 sporozoites per sporocyst)
Cyclospora causes outbreaks in _____
Industrialized nations
Apicomplexan associated with prepackaged vegetable trays
Cyclospora
Drug of choice for cyclospora
TMP-SMX
Cytoisospora is similar to which apicomplexan?
Cyclospora
Which species of cytoisospora infects humans?
C. belli
could possibly be responsible for the reactivation of zoites, causing the currents of clinical disease both in immunocompetent
immunocompromised individuals
Monoxoic tissue cyst
Cytoisospora oocyst have _____ sporozoites?
8
Which country reported more C. belli infections than other countries?
India
excellent method for detecting the oocyst of C. belli
Sheather Sugar Flotation method
The specific epithet Toxoplasma gondii was derived from the ____ where it was first isolated.
rodent species
Toxoplasma resembles ____ in having 2 sporocysts, each having 4 sporozoites
C. belli
Definite host of Toxoplasmosis
Domestic cats and other felines
Form of taxoplasmosis cells which has rapid multiplaction
Tachyzoites
Tachyzoites move by ______
gliding, flexing, undulating, and rotating
This toxoplasma cell for has slow multiplication and is typically located in muscle cells and neurons
Bradyzoites
