Isosporiasis pathophysiology: Difference between revisions
Rim Halaby (talk | contribs) No edit summary |
No edit summary |
||
| Line 2: | Line 2: | ||
{{Isosporiasis}} | {{Isosporiasis}} | ||
{{CMG}} | {{CMG}} | ||
== Pathophysiology== | == Pathophysiology== | ||
===Life Cycle=== | |||
[[Image:Isospora_LifeCycle.gif|left|frame|Life cycle of Isospora belli]] | [[Image:Isospora_LifeCycle.gif|left|frame|Life cycle of Isospora belli]] | ||
<br clear="left"/> | <br clear="left"/> | ||
| Line 22: | Line 20: | ||
[[Category:Infectious disease]] | [[Category:Infectious disease]] | ||
[[Category:Parasitic diseases]] | [[Category:Parasitic diseases]] | ||
[[Category:Needs overview]] | |||
Revision as of 21:05, 12 December 2012
|
Isosporiasis Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Isosporiasis pathophysiology On the Web |
|
American Roentgen Ray Society Images of Isosporiasis pathophysiology |
|
Risk calculators and risk factors for Isosporiasis pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Pathophysiology
Life Cycle
At time of excretion, the immature oocyst contains usually one sporoblast (more rarely two) 1. In further maturation after excretion, the sporoblast divides in two (the oocyst now contains two sporoblasts); the sporoblasts secrete a cyst wall, thus becoming sporocysts; and the sporocysts divide twice to produce four sporozoites each 2. Infection occurs by ingestion of sporocysts-containing oocysts: the sporocysts excyst in the small intestine and release their sporozoites, which invade the epithelial cells and initiate schizogony 3. Upon rupture of the schizonts, the merozoites are released, invade new epithelial cells, and continue the cycle of asexual multiplication 4. Trophozoites develop into schizonts which contain multiple merozoites. After a minimum of one week, the sexual stage begins with the development of male and female gametocytes 5. Fertilization results in the development of oocysts that are excreted in the stool 1. Isospora belli infects both humans and animals.