Morphology, life cycle, pathogenesis, clinical manifestation, lab diagnosis and treatment entamoeba histolytica is a common protozoan parasite found in the large intestine of human. The active trophozoite stage exists only in the host and in fresh loose feces. Entamoeba histolytica is an anaerobic parasitic amoebozoan, part of the genus entamoeba. Ppt entamoeba histolytica powerpoint presentation free. Stained specimens have a distinct nuclear envelope with fine chromatin granules. Trophozoite is the motile, feeding and pathogenic stage of e. Seen here is the active trophozoite form of the parasite, which lives in. Entamoeba histolytica parasite highres stock video footage. Proteomic analysis of the cyst stage of entamoeba histolytica plos. Entamoeba histolytica cyst under microscope at 40x.
Fecooral route, via the ingestion of contaminated food or water containing mature quadrinucleate cyst of entamoeba histolytica. Entamoeba histolytica, the causal agent of human amoebiasis, has two morphologically different phases. Entamoeba histolytica entamoeba histolytica escmid. The life cycle of entamoeba histolytica, includes three stages, 1. Bacteria are then covered, first with a series of chapters presenting the general concepts of bacterial microbiology and then with chapters detailing the major bacterial pathogenes of humans.
Diverse mammals such as dogs and cats can become infected but. The parasite is responsible for amoebiasis and liver absceses. It is the third leading parasite cause of death in the developing countries. Download scientific diagram entamoeba histolytica trophozoites observed under the microscope stain with methylene blue observe that the cells did not. Proteomic analysis of the cyst stage of entamoeba histolytica. Similar sections cover virology, mycology, and parasitology. Entamoeba histolytica is a unicellular amoeba that infects humans and lives in the lower bowels. Entamoeba histolytica is a single celled parasitic animal, i. Entamoeba histolytica trophozoites observed under the microscope. To maximize recovery of cysts, stool samples in formalin, or other fixatives, should be concentrated prior to microscopic examination e. Analysis of the epithelial damage produced by entamoeba. Early stages of cyst formation of have chromatoidal bodies nucleic acids present. The category b agent of bioterrorism, entamoeba histolytica has a. Entamoeba histolytica and entamoeba dispar basic guidelines a.
A free powerpoint ppt presentation displayed as a flash slide show on id. Multiple stool samples at least 3 should be tested before a negative result is reported. Influence of micropatterned grill lines on entamoeba histolytica. In the intestine, cysts produce live trophozoites that adhere to colon mucin and proliferate2. The pathogenic and nonpathogenic stages of entamoeba are recognized by schanotunn in 1903. Entamoeba histolytica is the causative agent of human amoebiasis, a major cause of diarrhea and hepatic.731 1658 891 359 609 444 1573 675 554 1155 1321 767 339 500 508 350 1656 1518 1654 1275 1156 481 467 613 1563 690 1257 314 671 326 1036 1187 635 623 222 819 310 987 1252 294 652 1317 392