Genus: Entamoeba Species: E. histolytica E. dispar E. hartmanni E. coli E. gingivalis E. Polecki E. moshkovskii Genus: Endolimax Species: E. nana Genus: Iodamoeba Species: I. bütschlii
(Peripheral Chromatin)
(linin network) (Pseudopodia) Binary fission
E. coli 15-50 µ
10-35 µ E. coli E. histolytica
T:12-60 µ
C:10-15 µ
Minuta :12- 15 µ
Trophozoites Cysts E. histolytica E. histolytica Hematophage Magnata E. dispar E. histolytica /E. dispar
E. moshkovskii
E. histolytica /E. dispar/E. moshkovskii E. hartmanni
T:10-12 µ
C:7-10 µ E. gingivalis
T: 10 - 35 µ E. Polecki T:25-30 µ C:10-15 µ Endolimax nana
T:5-15 µ T:6-8 µ
C:6-8 µ Iodamoeba bütschlii T:12-16 µ
C:9-10 µ Genus: Entamoeba
Species: E. histolytica Amebiasis E. dispar E. hartmanni E. Polecki E. coli E. moshkovskii -
–
( Anal sex )
( Fecal-oral self-inoculation ) .I .II .I
.II
E. dispar E. moshkovskii
(Immunodiagnosis) 1. Antibody Detection IHA , IFA , ELISA
2. Antigen Detection ELISA
)Molecular diagnosis ( E. HISTOLYTICA II TECHLAB® A 2nd generation Monoclonal ELISA for detecting E. histolytica adhesin in fecal specimens Catalog No. T5017 (96 Tests) E. dispar E. moshkovskii
(Immunodiagnosis) 1. Antibody Detection IHA , IFA , ELISA
2. Antigen Detection ELISA
)Molecular diagnosis ( PCR
Phase Contrast Microscopy X 400 Entamoeba coli Entamoeba histolytica uninucleate cyst cyst
Phase Contrast Microscopy X 400
Entamoeba histolytica Macrophage trophozoite Phase Contrast Microscopy X 400 Entamoeba histolytica Epithelial cells trophozoites Phase Contrast Microscopy X 400
Entamoeba histolytica Entamoeba coli trophozoite Phase Contrast Microscopy X 400 Entamoeba histolytica Polymorphonuclear cyst leucocytes Trichrome Stain x 1000
Entamoeba histolytica Macrophage cyst
PH PH ! ! ! ! ! !
Naegleria Acanthamoeba Balamuthia Naegleria fowleri Primary Amebic Meingoencephalitis (PAM)
( lobopodia ) 10-35 µm Amebostome
(9 µm )8-12 µ
Thermophilic Naegleria fowleri trophozoite Naegleria fowleri trophozoite in spinal fluid. Trichrome stain. Note the typically large karyosome and the monopodial locomotion. primary amebic meingoencephalitis (PAM)
B + B Acanthamoeba spp ostiole Granulomatous Amebic Encephalitis (GAE) ulcerating keratitis
10-45 µm
( Acantapodia )
7-18 µm
-2 → 45 °C 35-25°C Acanthamoeba sp. Notice the typical thorn-like projections (acanthopoda).
Acanthamoeba spp
Granulomatous Amebic Encephalitis (GAE) Acanthamoeba castellanii A. culbertsoni A. astronyxis A. palestinensis A. polyphaga A. hatchetti A. rhysodes A. griffini Balamuthia mandrillaris Granulomatous Amebic Encephalitis (GAE)
Acanthamoeba and B. mandrillaris Infections of the Lungs and Skin Acanthamoebic pneumonitis and dermatitis
Acanthamoeba Keratitis ulcerating keratitis Pathogenesis of Acanthamoeba infection
Acanthamoeba Keratitis Brolene (propamidine isethionate) dibromopropamidine
Polymyxin B miconazole + propamidine neomycin
Ketoconazole Acridine derivatives paromomycin Acanthamoeba sp. Keratitis
Corneal biopsy showing a trophozoite
Cyst with the characteristic stellate shape, in corneal scraping. Balamuthia mandrillaris Leptomyxid ameba
Meningoencephalitis Balamuthia amebic encephalitis (BAE)
( 30 ) 12-60 µm
Balamuthia mandrillaris ( 15 ) 6 - 30 µm trophozoites in brain tissue Immunofluorescent staining
Balamuthia mandrillaris
30 µ.
Balamuthia mandrillaris infection with important skin lesion.